initial commit

README.md

@@ -0,0 +1,41 @@
+The unfettered keyboard is an on-screen keyboard designed for Linux mobile. It
+uses the concept of Julow's [Unexpected Keyboard](https://github.com/Julow/Unexpected-Keyboard),
+where swiping on a displayed key cap produces a different key press. For
+example, swiping up and right on the "q" key generates a "1" keypress. This
+makes it possible for many keys to be available on the same keyboard layout.
+
+# Dependencies
+
+The dependencies are:
+
+- [expat](https://github.com/libexpat/libexpat) - 🌿 Fast streaming XML parser written in C99 with >90% test coverage
+- [fcft](https://codeberg.org/dnkl/fcft) - A simple library for font loading and glyph rasterization using FontConfig, FreeType and pixman.
+- [meson](https://github.com/mesonbuild/meson) - The Meson Build System
+- [pixman](https://gitlab.freedesktop.org/pixman/pixman) - Image processing and manipulation library
+- [wayland](https//gitlab.freedesktop.org/wayland/wayland) - Core Wayland window system code and protocol
+- [xkbcommon](https://github.com/xkbcommon/libxkbcommon) - keymap handling library for toolkits and window systems
+
+Additionally, fonts are needed to render the following Unicode, non-ASCII symbols:
+
+- ← (U+2190)
+- ↑ (U+2191)
+- → (U+2192)
+- ↓ (U+2193)
+- ⇧ (U+21E7)
+- ⌦ (U+2326)
+- ⌫ (U+232B)
+- ⏎ (U+23CE)
+- ⭾ (U+2B7E)
+
+# Usage
+
+This keyboard is designed to work, but it is not designed to be used. Using it
+is awkward:
+
+    $ meson setup build
+    $ ninja -C build
+    $ curl -L -o /tmp/bottom_row.xml https://github.com/Julow/Unexpected-Keyboard/raw/master/res/xml/bottom_row.xml
+    $ curl -L -o /tmp/latn_qwerty_us.xml https://github.com/Julow/Unexpected-Keyboard/raw/master/srcs/layouts/latn_qwerty_us.xml
+    $ sudo mkdir /usr/share/unfettered-keyboard/layouts
+    $ sudo cp /tmp/bottom_row.xml /tmp/latn_qwerty_us.xml /usr/share/unfettered-keyboard/layouts
+    $ build/ufkbd

graphics.c

@@ -0,0 +1,452 @@
+// SPDX-License-Identifier: GPL-3.0-only
+/*
+ * Copyright (c) 2024, Richard Acayan. All rights reserved.
+ */
+
+#include <fcft/fcft.h>
+#include <linux/input-event-codes.h>
+#include <pixman.h>
+#include <stdbool.h>
+#include <stddef.h>
+#include <stdio.h>
+#include <string.h>
+#include <utf8proc.h>
+#include <wayland-client-protocol.h>
+#include <xkbcommon/xkbcommon.h>
+
+#include "graphics.h"
+#include "layout.h"
+#include "modifier.h"
+#include "ufkbd.h"
+
+#define ARRAY_SIZE(a) (sizeof(a) / sizeof(*(a)))
+
+enum label_align {
+	LABEL_ALIGNL = 0x1,
+	LABEL_ALIGNR = 0x2,
+	LABEL_ALIGNU = 0x4,
+	LABEL_ALIGND = 0x8,
+};
+
+struct draw_data {
+	struct ufkbd_ctx *ufkbd;
+	pixman_image_t *img;
+};
+
+static const char *fonts[] = {
+	"Sans"
+};
+
+struct key_label {
+	xkb_keysym_t sym;
+	const char *label;
+};
+
+// List of custom key labels, sorted by XKB keysym.
+static const struct key_label keylabels[] = {
+	{ .sym = XKB_KEY_BackSpace, .label = "\u232B", },
+	{ .sym = XKB_KEY_Tab, .label = "\u2B7E", },
+	{ .sym = XKB_KEY_Return, .label = "\u23CE", },
+	{ .sym = XKB_KEY_Escape, .label = "Esc", },
+	{ .sym = XKB_KEY_Left, .label = "\u2190", },
+	{ .sym = XKB_KEY_Up, .label = "\u2191", },
+	{ .sym = XKB_KEY_Right, .label = "\u2192", },
+	{ .sym = XKB_KEY_Down, .label = "\u2193", },
+	{ .sym = XKB_KEY_Shift_L, .label = "\u21E7", },
+	{ .sym = XKB_KEY_Control_L, .label = "Ctrl", },
+	{ .sym = XKB_KEY_Alt_L, .label = "Alt", },
+	{ .sym = XKB_KEY_Delete, .label = "\u2326", },
+	{ .sym = XKB_KEY_XF86Fn, .label = "Fn", },
+};
+
+static int compare_key_label(const void *va, const void *vb)
+{
+	const struct key_label *a = va;
+	const struct key_label *b = vb;
+
+	return a->sym - b->sym;
+}
+
+static void draw_part(struct ufkbd_graphics_ctx *graphics,
+		      struct fcft_font *font,
+		      xkb_keysym_t keysym,
+		      bool pressed,
+		      int x1, int y1, int x2, int y2,
+		      enum label_align align,
+		      pixman_image_t *img)
+{
+	pixman_image_t *color;
+	struct key_label pattern;
+	struct fcft_text_run *text;
+	const struct key_label *label;
+	ssize_t len;
+	size_t i;
+
+	int pos = 0;
+	int min = 0, max = 0;
+	int level;
+
+	if (pressed)
+		color = graphics->key_pressed;
+	else
+		color = graphics->key_default;
+
+	pattern.sym = keysym;
+	label = bsearch(&pattern, keylabels,
+			ARRAY_SIZE(keylabels),
+			sizeof(*keylabels),
+			compare_key_label);
+	if (label != NULL) {
+		len = utf8proc_decompose((const utf8proc_uint8_t *) label->label, 0,
+					 graphics->buf,
+					 graphics->size / sizeof(utf8proc_int32_t),
+					 UTF8PROC_NULLTERM);
+		if (len <= 0)
+			return;
+	} else {
+		((utf8proc_int32_t *) graphics->buf)[0] = keysym;
+		len = 1;
+	}
+
+	text = fcft_rasterize_text_run_utf32(font, len, graphics->buf,
+					     FCFT_SUBPIXEL_DEFAULT);
+	if (text == NULL)
+		return;
+
+	for (i = 0; i < text->count; i++) {
+		if (max < pos + text->glyphs[i]->width)
+			max = pos + text->glyphs[i]->width;
+
+		pos += text->glyphs[i]->advance.x;
+
+		if (min > pos)
+			min = pos;
+	}
+
+	if (align & LABEL_ALIGNL)
+		pos = x1;
+	else if (align & LABEL_ALIGNR)
+		pos = x2 - max;
+	else
+		pos = (x1 + x2 + min - max) / 2;
+
+	if (align & LABEL_ALIGNU)
+		level = y1 + font->ascent;
+	else if (align & LABEL_ALIGND)
+		level = y2 - font->descent;
+	else
+		level = (y1 + y2 + font->ascent) / 2;
+
+	for (i = 0; i < text->count; i++) {
+		pixman_image_composite32(PIXMAN_OP_OVER, color, text->glyphs[i]->pix, img,
+					 0, 0, 0, 0,
+					 pos, level - text->glyphs[i]->y,
+					 text->glyphs[i]->width, text->glyphs[i]->height);
+
+		pos += text->glyphs[i]->advance.x;
+	}
+
+	fcft_text_run_destroy(text);
+}
+
+static inline bool is_key_pressed(const struct ufkbd_ctx *ctx,
+				  const struct ufkbd_key *key,
+				  int part)
+{
+	if (key->presses[part])
+		return true;
+
+	return false;
+}
+
+static int draw_single(struct ufkbd_ctx *ctx, struct ufkbd_key *key,
+		       int x1, int y1, int x2, int y2,
+		       pixman_image_t *img)
+{
+	bool keycap = true;
+	int width = x2 - x1 + 1, height = y2 - y1 + 1;
+	size_t i;
+
+	for (i = 0; i < UFKBD_PART_MAX; i++) {
+		if (is_key_pressed(ctx, key, i)) {
+			keycap = false;
+			break;
+		}
+	}
+
+	pixman_image_composite32(PIXMAN_OP_SRC, ctx->graphics->fill_bg, NULL, img,
+				 0, 0, 0, 0, x1, y1, width, height);
+
+	if (keycap)
+		pixman_image_composite32(PIXMAN_OP_SRC, ctx->graphics->fill_keycap, NULL, img,
+					 0, 0, 0, 0, x1 + 2, y1 + 2, width - 4, height - 4);
+
+	if (key->keyids[UFKBD_PART_CENTER] != -1) {
+		draw_part(ctx->graphics, ctx->graphics->font,
+			  key->keysyms[UFKBD_PART_CENTER],
+			  is_key_pressed(ctx, key, UFKBD_PART_CENTER),
+			  x1 + 2, y1 + 2, x2 - 2, y2 - 2, 0, img);
+	}
+
+	if (key->keyids[UFKBD_PART_TL] != -1) {
+		draw_part(ctx->graphics, ctx->graphics->font_sec,
+			  key->keysyms[UFKBD_PART_TL],
+			  is_key_pressed(ctx, key, UFKBD_PART_TL),
+			  x1 + 2, y1 + 2, x2 - 2, y2 - 2, LABEL_ALIGNL | LABEL_ALIGNU, img);
+	}
+
+	if (key->keyids[UFKBD_PART_TR] != -1) {
+		draw_part(ctx->graphics, ctx->graphics->font_sec,
+			  key->keysyms[UFKBD_PART_TR],
+			  is_key_pressed(ctx, key, UFKBD_PART_TR),
+			  x1 + 2, y1 + 2, x2 - 2, y2 - 2, LABEL_ALIGNR | LABEL_ALIGNU, img);
+	}
+
+	if (key->keyids[UFKBD_PART_BL] != -1) {
+		draw_part(ctx->graphics, ctx->graphics->font_sec,
+			  key->keysyms[UFKBD_PART_BL],
+			  is_key_pressed(ctx, key, UFKBD_PART_BL),
+			  x1 + 2, y1 + 2, x2 - 2, y2 - 2, LABEL_ALIGNL | LABEL_ALIGND, img);
+	}
+
+	if (key->keyids[UFKBD_PART_BR] != -1) {
+		draw_part(ctx->graphics, ctx->graphics->font_sec,
+			  key->keysyms[UFKBD_PART_BR],
+			  is_key_pressed(ctx, key, UFKBD_PART_BR),
+			  x1 + 2, y1 + 2, x2 - 2, y2 - 2, LABEL_ALIGNR | LABEL_ALIGND, img);
+	}
+
+	if (key->keyids[UFKBD_PART_LEFT] != -1) {
+		draw_part(ctx->graphics, ctx->graphics->font_sec,
+			  key->keysyms[UFKBD_PART_LEFT],
+			  is_key_pressed(ctx, key, UFKBD_PART_LEFT),
+			  x1 + 2, y1 + 2, x2 - 2, y2 - 2, LABEL_ALIGNL, img);
+	}
+
+	if (key->keyids[UFKBD_PART_RIGHT] != -1) {
+		draw_part(ctx->graphics, ctx->graphics->font_sec,
+			  key->keysyms[UFKBD_PART_RIGHT],
+			  is_key_pressed(ctx, key, UFKBD_PART_RIGHT),
+			  x1 + 2, y1 + 2, x2 - 2, y2 - 2, LABEL_ALIGNR, img);
+	}
+
+	if (key->keyids[UFKBD_PART_TOP] != -1) {
+		draw_part(ctx->graphics, ctx->graphics->font_sec,
+			  key->keysyms[UFKBD_PART_TOP],
+			  is_key_pressed(ctx, key, UFKBD_PART_TOP),
+			  x1 + 2, y1 + 2, x2 - 2, y2 - 2, LABEL_ALIGNU, img);
+	}
+
+	if (key->keyids[UFKBD_PART_BOTTOM] != -1) {
+		draw_part(ctx->graphics, ctx->graphics->font_sec,
+			  key->keysyms[UFKBD_PART_BOTTOM],
+			  is_key_pressed(ctx, key, UFKBD_PART_BOTTOM),
+			  x1 + 2, y1 + 2, x2 - 2, y2 - 2, LABEL_ALIGND, img);
+	}
+
+	return 0;
+}
+
+void ufkbd_graphics_draw_key(struct ufkbd_ctx *ctx, struct ufkbd_key *key,
+			     int x1, int y1, int x2, int y2)
+{
+	pixman_image_t *img;
+	void *ptr;
+	unsigned int scale = ctx->graphics->scale;
+	size_t stride;
+	int ret;
+
+	ret = ctx->drv->draw_begin(ctx->drv_data, &stride, &ptr);
+	if (ret)
+		return;
+
+	// We don't need the full image, just the part that we're touching.
+	img = pixman_image_create_bits_no_clear(PIXMAN_a8r8g8b8,
+						x2 * scale + 1, y2 * scale + 1,
+						ptr, stride);
+	if (img == NULL)
+		return;
+
+	ret = draw_single(ctx, key, x1 * scale, y1 * scale, x2 * scale, y2 * scale, img);
+	if (!ret)
+		ctx->drv->draw_touch(ctx->drv_data, x1 * scale, y1 * scale, (x2 * scale) - (x1 * scale) + 1, (y2 * scale) - (y1 * scale) + 1);
+
+	pixman_image_unref(img);
+
+	ctx->drv->draw_end(ctx->drv_data);
+}
+
+static void draw_from_layout(struct ufkbd_key *key,
+			    int x1, int y1, int x2, int y2,
+			    void *data)
+{
+	struct draw_data *ctx = data;
+	unsigned int scale = ctx->ufkbd->graphics->scale;
+
+	draw_single(ctx->ufkbd, key, x1 * scale, y1 * scale,
+		    x2 * scale, y2 * scale, ctx->img);
+}
+
+void ufkbd_graphics_draw_layout(struct ufkbd_ctx *ctx, struct ufkbd_layout *layout,
+				size_t width, size_t height)
+{
+	struct draw_data data;
+	pixman_image_t *img;
+	void *ptr;
+	size_t stride;
+	int ret;
+
+	ret = ctx->drv->draw_begin(ctx->drv_data, &stride, &ptr);
+	if (ret)
+		return;
+
+	img = pixman_image_create_bits_no_clear(PIXMAN_a8r8g8b8,
+						width * ctx->graphics->scale,
+						height * ctx->graphics->scale,
+						ptr, stride);
+	if (img == NULL)
+		return;
+
+	pixman_image_composite32(PIXMAN_OP_SRC, ctx->graphics->fill_bg, NULL, img,
+				 0, 0, 0, 0, 0, 0, width * ctx->graphics->scale, height * ctx->graphics->scale);
+
+	ctx->drv->draw_touch(ctx->drv_data, 0, 0,
+			     width * ctx->graphics->scale - 1,
+			     height * ctx->graphics->scale - 1);
+
+	data.ufkbd = ctx;
+	data.img = img;
+
+	ufkbd_layout_foreach(ctx->layout, draw_from_layout, &data);
+
+	pixman_image_unref(img);
+
+	ctx->drv->draw_end(ctx->drv_data);
+}
+
+int ufkbd_graphics_set_scale(struct ufkbd_graphics_ctx *graphics, unsigned int scale)
+{
+	struct fcft_font *font, *font_sec;
+
+	graphics->scale = scale;
+
+	snprintf(graphics->buf, graphics->size, "size=%u", 10 * scale);
+	font = fcft_from_name(ARRAY_SIZE(fonts), fonts, graphics->buf);
+	if (font == NULL) {
+		fprintf(stderr, "Failed to resize key label font when setting scale\n");
+		return -1;
+	}
+
+	snprintf(graphics->buf, graphics->size, "size=%u", 8 * scale);
+	font_sec = fcft_from_name(ARRAY_SIZE(fonts), fonts, graphics->buf);
+	if (font_sec == NULL) {
+		fprintf(stderr, "Failed to resize secondary key label font when setting scale\n");
+		goto err_free_font;
+	}
+
+	fcft_destroy(graphics->font);
+	fcft_destroy(graphics->font_sec);
+
+	graphics->font = font;
+	graphics->font_sec = font_sec;
+
+	return 0;
+
+err_free_font:
+	fcft_destroy(font);
+	return -1;
+}
+
+struct ufkbd_graphics_ctx *ufkbd_graphics_init(void)
+{
+	struct ufkbd_graphics_ctx *graphics;
+	pixman_color_t color;
+
+	graphics = malloc(sizeof(*graphics));
+	if (graphics == NULL)
+		return NULL;
+
+	graphics->scale = 1;
+
+	fcft_init(FCFT_LOG_COLORIZE_AUTO, false, FCFT_LOG_CLASS_DEBUG);
+
+	graphics->font = fcft_from_name(ARRAY_SIZE(fonts), fonts, "size=10");
+	if (graphics->font == NULL)
+		goto err_free_ctx;
+
+	graphics->font_sec = fcft_from_name(ARRAY_SIZE(fonts), fonts, "size=8");
+	if (graphics->font_sec == NULL)
+		goto err_free_font;
+
+	graphics->size = 256;
+	graphics->buf = malloc(graphics->size);
+	if (graphics->buf == NULL)
+		goto err_free_font_sec;
+
+	color.red = 0;
+	color.green = 0;
+	color.blue = 0;
+	color.alpha = 65535;
+	graphics->fill_bg = pixman_image_create_solid_fill(&color);
+	if (graphics->fill_bg == NULL)
+		goto err_free_buf;
+
+	color.red = 16383;
+	color.green = 16383;
+	color.blue = 16383;
+	color.alpha = 65535;
+	graphics->fill_keycap = pixman_image_create_solid_fill(&color);
+	if (graphics->fill_keycap == NULL)
+		goto err_unref_bg;
+
+	color.red = 65535;
+	color.green = 65535;
+	color.blue = 65535;
+	color.alpha = 65535;
+	graphics->key_default = pixman_image_create_solid_fill(&color);
+	if (graphics->key_default == NULL)
+		goto err_unref_keycap;
+
+	color.red = 0;
+	color.green = 40959;
+	color.blue = 65535;
+	color.alpha = 65535;
+	graphics->key_pressed = pixman_image_create_solid_fill(&color);
+	if (graphics->key_pressed == NULL)
+		goto err_unref_key_def;
+
+	return graphics;
+
+err_unref_key_def:
+	pixman_image_unref(graphics->key_default);
+err_unref_keycap:
+	pixman_image_unref(graphics->fill_keycap);
+err_unref_bg:
+	pixman_image_unref(graphics->fill_bg);
+err_free_buf:
+	free(graphics->buf);
+err_free_font_sec:
+	fcft_destroy(graphics->font_sec);
+err_free_font:
+	fcft_destroy(graphics->font);
+err_free_ctx:
+	free(graphics);
+	return NULL;
+}
+
+void ufkbd_graphics_uninit(struct ufkbd_graphics_ctx *graphics)
+{
+	pixman_image_unref(graphics->key_pressed);
+	pixman_image_unref(graphics->key_default);
+	pixman_image_unref(graphics->fill_keycap);
+	pixman_image_unref(graphics->fill_bg);
+
+	fcft_destroy(graphics->font_sec);
+	fcft_destroy(graphics->font);
+
+	fcft_fini();
+
+	free(graphics->buf);
+
+	free(graphics);
+}

include/graphics.h

@@ -0,0 +1,47 @@
+/* SPDX-License-Identifier: GPL-3.0-only */
+/*
+ * Interface for drawing keys to a buffer.
+ *
+ * Copyright (c) 2024, Richard Acayan. All rights reserved.
+ */
+
+#ifndef UFKBD_GRAPHICS_H
+#define UFKBD_GRAPHICS_H
+
+#include <stddef.h>
+#include <pixman.h>
+
+struct fcft_font;
+
+struct ufkbd_ctx;
+struct ufkbd_key;
+struct ufkbd_layout;
+
+struct ufkbd_graphics_ctx {
+	struct fcft_font *font;
+	struct fcft_font *font_sec;
+
+	pixman_image_t *fill_bg;
+	pixman_image_t *fill_keycap;
+	pixman_image_t *key_default;
+	pixman_image_t *key_pressed;
+
+	pixman_image_t *target;
+
+	unsigned int scale;
+
+	size_t size;
+	void *buf;
+};
+
+struct ufkbd_graphics_ctx *ufkbd_graphics_init(void);
+void ufkbd_graphics_uninit(struct ufkbd_graphics_ctx *graphics);
+
+int ufkbd_graphics_set_scale(struct ufkbd_graphics_ctx *graphics, unsigned int scale);
+
+void ufkbd_graphics_draw_key(struct ufkbd_ctx *ctx, struct ufkbd_key *key,
+			     int x1, int y1, int x2, int y2);
+void ufkbd_graphics_draw_layout(struct ufkbd_ctx *ctx, struct ufkbd_layout *layout,
+				size_t width, size_t height);
+
+#endif /* UFKBD_GRAPHICS_H */

include/input.h

@@ -0,0 +1,23 @@
+/* SPDX-License-Identifier: GPL-3.0-only */
+/*
+ * Input driver interface.
+ *
+ * Copyright (c) 2024, Richard Acayan. All rights reserved.
+ */
+
+#ifndef UFKBD_INPUT_H
+#define UFKBD_INPUT_H
+
+#include <stdbool.h>
+
+struct ufkbd_ctx;
+struct ufkbd_key;
+
+int ufkbd_input_press(struct ufkbd_ctx *ctx, int id);
+int ufkbd_input_position(struct ufkbd_ctx *ctx, int id, int x, int y);
+int ufkbd_input_release(struct ufkbd_ctx *ctx, int id);
+int ufkbd_input_repeat(struct ufkbd_ctx *ctx, int id);
+
+int ufkbd_input_repeat_held(struct ufkbd_ctx *ctx);
+
+#endif /* UFKBD_INPUT_H */

include/keymap.h

@@ -0,0 +1,28 @@
+/* SPDX-License-Identifier: GPL-3.0-only */
+/*
+ * Keymap generation interface.
+ *
+ * Copyright (c) 2024, Richard Acayan. All rights reserved.
+ */
+
+#ifndef UFKBD_KEYMAP_H
+#define UFKBD_KEYMAP_H
+
+#include <xkbcommon/xkbcommon.h>
+
+struct ufkbd_keymap {
+	int count;
+
+	size_t size;
+	int fd;
+
+	char path[256];
+};
+
+int ufkbd_keymap_add_key(struct ufkbd_keymap *keymap, xkb_keysym_t keysym);
+void ufkbd_keymap_end(struct ufkbd_keymap *keymap);
+
+struct ufkbd_keymap *ufkbd_keymap_init(void);
+void ufkbd_keymap_uninit(struct ufkbd_keymap *keymap);
+
+#endif /* UFKBD_KEYMAP_H */

include/layout.h

@@ -0,0 +1,49 @@
+/* SPDX-License-Identifier: GPL-3.0-only */
+/*
+ * Keyboard layout management.
+ *
+ * Copyright (c) 2024, Richard Acayan. All rights reserved.
+ */
+
+#ifndef UFKBD_LAYOUT_H
+#define UFKBD_LAYOUT_H
+
+#include <stddef.h>
+
+struct ufkbd_key;
+
+struct ufkbd_layout_column {
+	double x1_unscaled, x2_unscaled;
+	int x1, x2;
+
+	struct ufkbd_key *key;
+};
+
+struct ufkbd_layout_row {
+	double y1_unscaled, y2_unscaled;
+	int y1, y2;
+
+	size_t n_cols;
+	struct ufkbd_layout_column *cols;
+};
+
+struct ufkbd_layout {
+	size_t max_cols;
+
+	size_t n_rows;
+	struct ufkbd_layout_row *rows;
+};
+
+struct ufkbd_layout *ufkbd_layout_init(void);
+void ufkbd_layout_uninit(struct ufkbd_layout *layout);
+
+struct ufkbd_key *ufkbd_layout_search(struct ufkbd_layout *layout, int x, int y,
+				      int *x1, int *y1, int *x2, int *y2);
+void ufkbd_layout_foreach(struct ufkbd_layout *layout,
+			  void (*func)(struct ufkbd_key *key,
+				       int x1, int y1, int x2, int y2,
+				       void *data),
+			  void *data);
+void ufkbd_layout_resize(struct ufkbd_layout *layout, int width, int height);
+
+#endif

include/modifier.h

@@ -0,0 +1,27 @@
+/* SPDX-License-Identifier: GPL-3.0-only */
+/*
+ * Modifier key callbacks.
+ *
+ * Copyright (c) 2024, Richard Acayan. All rights reserved.
+ */
+
+#ifndef UFKBD_MODIFIER_H
+#define UFKBD_MODIFIER_H
+
+#include "ufkbd.h"
+
+struct ufkbd_ctx;
+struct ufkbd_press;
+
+bool ufkbd_is_modifier(struct ufkbd_press *press);
+
+enum ufkbd_mod_state ufkbd_modifier_get_state(const struct ufkbd_ctx *ctx,
+					      const struct ufkbd_key *key,
+					      int part);
+
+void ufkbd_modifier_press(struct ufkbd_ctx *ctx, struct ufkbd_press *press);
+void ufkbd_modifier_cancel(struct ufkbd_ctx *ctx, struct ufkbd_press *press);
+void ufkbd_modifier_release(struct ufkbd_ctx *ctx, struct ufkbd_press *press);
+void ufkbd_modifier_unlatch_all(struct ufkbd_ctx *ctx);
+
+#endif /* UFKBD_MODIFIER_H */

include/parser.h

@@ -0,0 +1,18 @@
+/* SPDX-License-Identifier: GPL-3.0-only */
+/*
+ * Parser for Unfettered Keyboard keyboard layouts in XML.
+ *
+ * Copyright (c) 2024, Richard Acayan. All rights reserved.
+ */
+
+#ifndef UFKBD_PARSER_H
+#define UFKBD_PARSER_H
+
+struct ufkbd_keymap;
+struct ufkbd_layout;
+
+int ufkbd_parser_parse(int dir, const char *fname,
+		       struct ufkbd_keymap *keymap,
+		       struct ufkbd_layout *layout);
+
+#endif /* UFKBD_PARSER_H */

include/ufkbd.h

@@ -0,0 +1,113 @@
+/* SPDX-License-Identifier: GPL-3.0-only */
+/*
+ * Copyright (c) 2024, Richard Acayan. All rights reserved.
+ */
+
+#ifndef UFKBD_H
+#define UFKBD_H
+
+#include <stdbool.h>
+#include <time.h>
+#include <xkbcommon/xkbcommon.h>
+
+#define UFKBD_PRESS_MAX 64
+#define UFKBD_MOD_MAX 4
+
+struct ufkbd_ctx;
+struct ufkbd_graphics_ctx;
+struct ufkbd_graphics_driver;
+struct ufkbd_input_driver;
+
+// These correspond to the key0..key8 properties in the layout definitions
+enum ufkbd_part {
+	UFKBD_PART_CENTER,
+	UFKBD_PART_TL,
+	UFKBD_PART_TR,
+	UFKBD_PART_BL,
+	UFKBD_PART_BR,
+	UFKBD_PART_LEFT,
+	UFKBD_PART_RIGHT,
+	UFKBD_PART_TOP,
+	UFKBD_PART_BOTTOM,
+	UFKBD_PART_MAX
+};
+
+enum ufkbd_mod_state {
+	UFKBD_MOD_RELEASED,
+	UFKBD_MOD_PRESSED,
+	UFKBD_MOD_LATCHED,
+	UFKBD_MOD_LOCKED,
+};
+
+enum ufkbd_modifier {
+	UFKBD_MOD_SHIFT,
+	UFKBD_MOD_CTRL,
+	UFKBD_MOD_ALT,
+};
+
+struct ufkbd_key {
+	// Graphical parameters
+	size_t presses[UFKBD_PART_MAX];
+	void *labels_mask[UFKBD_PART_MAX * 2];
+	void *labels_color[UFKBD_PART_MAX * 2];
+
+	int keyids[UFKBD_PART_MAX];
+	xkb_keysym_t keysyms[UFKBD_PART_MAX];
+	enum ufkbd_part lut[16];
+	int latch_state;
+};
+
+struct ufkbd_driver {
+	void *(*init)(struct ufkbd_ctx *ufkbd);
+	void (*uninit)(void *data);
+
+	// Deprecated
+	void (*listen_one)(void *data, bool block);
+
+	void (*listen_step)(void *data, int timeout);
+	int (*send_key)(void *data, int code, bool repeat);
+	int (*send_mod)(void *data, enum ufkbd_modifier mod, bool pressed);
+
+	int (*draw_begin)(void *data, size_t *stride, void **ptr);
+	void (*draw_touch)(void *data, int x, int y, int width, int height);
+	void (*draw_end)(void *data);
+};
+
+struct ufkbd_press {
+	struct ufkbd_key *key;
+	int xl, xr, yt, yb;
+
+	struct timespec repeat;
+
+	// Coordinates of starting and ending position of keypress
+	int x1, y1, x2, y2;
+
+	// Cached section of the key that is pressed
+	enum ufkbd_part part;
+};
+
+struct ufkbd_ctx {
+	struct ufkbd_keymap *keymap;
+	struct ufkbd_layout *layout;
+
+	struct ufkbd_driver *drv;
+	void *drv_data;
+
+	struct ufkbd_graphics_ctx *graphics;
+
+	// Settings
+	int repeat_delay_ns;
+	int repeat_interval_ns;
+	int dist_squared;
+
+	uint32_t mods[(UFKBD_MOD_MAX + 15) / 16];
+
+	size_t n_presses;
+	struct ufkbd_press presses[UFKBD_PRESS_MAX];
+
+	bool terminate;
+};
+
+void ufkbd_terminate(struct ufkbd_ctx *ctx);
+
+#endif /* UFKBD_H */

include/wayland/fractional-scale-v1.h

@@ -0,0 +1,264 @@
+/* Generated by wayland-scanner 1.22.0 */
+
+#ifndef FRACTIONAL_SCALE_V1_CLIENT_PROTOCOL_H
+#define FRACTIONAL_SCALE_V1_CLIENT_PROTOCOL_H
+
+#include <stdint.h>
+#include <stddef.h>
+#include "wayland-client.h"
+
+#ifdef  __cplusplus
+extern "C" {
+#endif
+
+/**
+ * @page page_fractional_scale_v1 The fractional_scale_v1 protocol
+ * Protocol for requesting fractional surface scales
+ *
+ * @section page_desc_fractional_scale_v1 Description
+ *
+ * This protocol allows a compositor to suggest for surfaces to render at
+ * fractional scales.
+ *
+ * A client can submit scaled content by utilizing wp_viewport. This is done by
+ * creating a wp_viewport object for the surface and setting the destination
+ * rectangle to the surface size before the scale factor is applied.
+ *
+ * The buffer size is calculated by multiplying the surface size by the
+ * intended scale.
+ *
+ * The wl_surface buffer scale should remain set to 1.
+ *
+ * If a surface has a surface-local size of 100 px by 50 px and wishes to
+ * submit buffers with a scale of 1.5, then a buffer of 150px by 75 px should
+ * be used and the wp_viewport destination rectangle should be 100 px by 50 px.
+ *
+ * For toplevel surfaces, the size is rounded halfway away from zero. The
+ * rounding algorithm for subsurface position and size is not defined.
+ *
+ * @section page_ifaces_fractional_scale_v1 Interfaces
+ * - @subpage page_iface_wp_fractional_scale_manager_v1 - fractional surface scale information
+ * - @subpage page_iface_wp_fractional_scale_v1 - fractional scale interface to a wl_surface
+ * @section page_copyright_fractional_scale_v1 Copyright
+ * <pre>
+ *
+ * Copyright © 2022 Kenny Levinsen
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice (including the next
+ * paragraph) shall be included in all copies or substantial portions of the
+ * Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
+ * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
+ * DEALINGS IN THE SOFTWARE.
+ * </pre>
+ */
+struct wl_surface;
+struct wp_fractional_scale_manager_v1;
+struct wp_fractional_scale_v1;
+
+#ifndef WP_FRACTIONAL_SCALE_MANAGER_V1_INTERFACE
+#define WP_FRACTIONAL_SCALE_MANAGER_V1_INTERFACE
+/**
+ * @page page_iface_wp_fractional_scale_manager_v1 wp_fractional_scale_manager_v1
+ * @section page_iface_wp_fractional_scale_manager_v1_desc Description
+ *
+ * A global interface for requesting surfaces to use fractional scales.
+ * @section page_iface_wp_fractional_scale_manager_v1_api API
+ * See @ref iface_wp_fractional_scale_manager_v1.
+ */
+/**
+ * @defgroup iface_wp_fractional_scale_manager_v1 The wp_fractional_scale_manager_v1 interface
+ *
+ * A global interface for requesting surfaces to use fractional scales.
+ */
+extern const struct wl_interface wp_fractional_scale_manager_v1_interface;
+#endif
+#ifndef WP_FRACTIONAL_SCALE_V1_INTERFACE
+#define WP_FRACTIONAL_SCALE_V1_INTERFACE
+/**
+ * @page page_iface_wp_fractional_scale_v1 wp_fractional_scale_v1
+ * @section page_iface_wp_fractional_scale_v1_desc Description
+ *
+ * An additional interface to a wl_surface object which allows the compositor
+ * to inform the client of the preferred scale.
+ * @section page_iface_wp_fractional_scale_v1_api API
+ * See @ref iface_wp_fractional_scale_v1.
+ */
+/**
+ * @defgroup iface_wp_fractional_scale_v1 The wp_fractional_scale_v1 interface
+ *
+ * An additional interface to a wl_surface object which allows the compositor
+ * to inform the client of the preferred scale.
+ */
+extern const struct wl_interface wp_fractional_scale_v1_interface;
+#endif
+
+#ifndef WP_FRACTIONAL_SCALE_MANAGER_V1_ERROR_ENUM
+#define WP_FRACTIONAL_SCALE_MANAGER_V1_ERROR_ENUM
+enum wp_fractional_scale_manager_v1_error {
+	/**
+	 * the surface already has a fractional_scale object associated
+	 */
+	WP_FRACTIONAL_SCALE_MANAGER_V1_ERROR_FRACTIONAL_SCALE_EXISTS = 0,
+};
+#endif /* WP_FRACTIONAL_SCALE_MANAGER_V1_ERROR_ENUM */
+
+#define WP_FRACTIONAL_SCALE_MANAGER_V1_DESTROY 0
+#define WP_FRACTIONAL_SCALE_MANAGER_V1_GET_FRACTIONAL_SCALE 1
+
+
+/**
+ * @ingroup iface_wp_fractional_scale_manager_v1
+ */
+#define WP_FRACTIONAL_SCALE_MANAGER_V1_DESTROY_SINCE_VERSION 1
+/**
+ * @ingroup iface_wp_fractional_scale_manager_v1
+ */
+#define WP_FRACTIONAL_SCALE_MANAGER_V1_GET_FRACTIONAL_SCALE_SINCE_VERSION 1
+
+/** @ingroup iface_wp_fractional_scale_manager_v1 */
+static inline void
+wp_fractional_scale_manager_v1_set_user_data(struct wp_fractional_scale_manager_v1 *wp_fractional_scale_manager_v1, void *user_data)
+{
+	wl_proxy_set_user_data((struct wl_proxy *) wp_fractional_scale_manager_v1, user_data);
+}
+
+/** @ingroup iface_wp_fractional_scale_manager_v1 */
+static inline void *
+wp_fractional_scale_manager_v1_get_user_data(struct wp_fractional_scale_manager_v1 *wp_fractional_scale_manager_v1)
+{
+	return wl_proxy_get_user_data((struct wl_proxy *) wp_fractional_scale_manager_v1);
+}
+
+static inline uint32_t
+wp_fractional_scale_manager_v1_get_version(struct wp_fractional_scale_manager_v1 *wp_fractional_scale_manager_v1)
+{
+	return wl_proxy_get_version((struct wl_proxy *) wp_fractional_scale_manager_v1);
+}
+
+/**
+ * @ingroup iface_wp_fractional_scale_manager_v1
+ *
+ * Informs the server that the client will not be using this protocol
+ * object anymore. This does not affect any other objects,
+ * wp_fractional_scale_v1 objects included.
+ */
+static inline void
+wp_fractional_scale_manager_v1_destroy(struct wp_fractional_scale_manager_v1 *wp_fractional_scale_manager_v1)
+{
+	wl_proxy_marshal_flags((struct wl_proxy *) wp_fractional_scale_manager_v1,
+			 WP_FRACTIONAL_SCALE_MANAGER_V1_DESTROY, NULL, wl_proxy_get_version((struct wl_proxy *) wp_fractional_scale_manager_v1), WL_MARSHAL_FLAG_DESTROY);
+}
+
+/**
+ * @ingroup iface_wp_fractional_scale_manager_v1
+ *
+ * Create an add-on object for the the wl_surface to let the compositor
+ * request fractional scales. If the given wl_surface already has a
+ * wp_fractional_scale_v1 object associated, the fractional_scale_exists
+ * protocol error is raised.
+ */
+static inline struct wp_fractional_scale_v1 *
+wp_fractional_scale_manager_v1_get_fractional_scale(struct wp_fractional_scale_manager_v1 *wp_fractional_scale_manager_v1, struct wl_surface *surface)
+{
+	struct wl_proxy *id;
+
+	id = wl_proxy_marshal_flags((struct wl_proxy *) wp_fractional_scale_manager_v1,
+			 WP_FRACTIONAL_SCALE_MANAGER_V1_GET_FRACTIONAL_SCALE, &wp_fractional_scale_v1_interface, wl_proxy_get_version((struct wl_proxy *) wp_fractional_scale_manager_v1), 0, NULL, surface);
+
+	return (struct wp_fractional_scale_v1 *) id;
+}
+
+/**
+ * @ingroup iface_wp_fractional_scale_v1
+ * @struct wp_fractional_scale_v1_listener
+ */
+struct wp_fractional_scale_v1_listener {
+	/**
+	 * notify of new preferred scale
+	 *
+	 * Notification of a new preferred scale for this surface that
+	 * the compositor suggests that the client should use.
+	 *
+	 * The sent scale is the numerator of a fraction with a denominator
+	 * of 120.
+	 * @param scale the new preferred scale
+	 */
+	void (*preferred_scale)(void *data,
+				struct wp_fractional_scale_v1 *wp_fractional_scale_v1,
+				uint32_t scale);
+};
+
+/**
+ * @ingroup iface_wp_fractional_scale_v1
+ */
+static inline int
+wp_fractional_scale_v1_add_listener(struct wp_fractional_scale_v1 *wp_fractional_scale_v1,
+				    const struct wp_fractional_scale_v1_listener *listener, void *data)
+{
+	return wl_proxy_add_listener((struct wl_proxy *) wp_fractional_scale_v1,
+				     (void (**)(void)) listener, data);
+}
+
+#define WP_FRACTIONAL_SCALE_V1_DESTROY 0
+
+/**
+ * @ingroup iface_wp_fractional_scale_v1
+ */
+#define WP_FRACTIONAL_SCALE_V1_PREFERRED_SCALE_SINCE_VERSION 1
+
+/**
+ * @ingroup iface_wp_fractional_scale_v1
+ */
+#define WP_FRACTIONAL_SCALE_V1_DESTROY_SINCE_VERSION 1
+
+/** @ingroup iface_wp_fractional_scale_v1 */
+static inline void
+wp_fractional_scale_v1_set_user_data(struct wp_fractional_scale_v1 *wp_fractional_scale_v1, void *user_data)
+{
+	wl_proxy_set_user_data((struct wl_proxy *) wp_fractional_scale_v1, user_data);
+}
+
+/** @ingroup iface_wp_fractional_scale_v1 */
+static inline void *
+wp_fractional_scale_v1_get_user_data(struct wp_fractional_scale_v1 *wp_fractional_scale_v1)
+{
+	return wl_proxy_get_user_data((struct wl_proxy *) wp_fractional_scale_v1);
+}
+
+static inline uint32_t
+wp_fractional_scale_v1_get_version(struct wp_fractional_scale_v1 *wp_fractional_scale_v1)
+{
+	return wl_proxy_get_version((struct wl_proxy *) wp_fractional_scale_v1);
+}
+
+/**
+ * @ingroup iface_wp_fractional_scale_v1
+ *
+ * Destroy the fractional scale object. When this object is destroyed,
+ * preferred_scale events will no longer be sent.
+ */
+static inline void
+wp_fractional_scale_v1_destroy(struct wp_fractional_scale_v1 *wp_fractional_scale_v1)
+{
+	wl_proxy_marshal_flags((struct wl_proxy *) wp_fractional_scale_v1,
+			 WP_FRACTIONAL_SCALE_V1_DESTROY, NULL, wl_proxy_get_version((struct wl_proxy *) wp_fractional_scale_v1), WL_MARSHAL_FLAG_DESTROY);
+}
+
+#ifdef  __cplusplus
+}
+#endif
+
+#endif

include/wayland/input-method-unstable-v2.h

@@ -0,0 +1,945 @@
+/* Generated by wayland-scanner 1.22.0 */
+
+#ifndef INPUT_METHOD_UNSTABLE_V2_CLIENT_PROTOCOL_H
+#define INPUT_METHOD_UNSTABLE_V2_CLIENT_PROTOCOL_H
+
+#include <stdint.h>
+#include <stddef.h>
+#include "wayland-client.h"
+
+#ifdef  __cplusplus
+extern "C" {
+#endif
+
+/**
+ * @page page_input_method_unstable_v2 The input_method_unstable_v2 protocol
+ * Protocol for creating input methods
+ *
+ * @section page_desc_input_method_unstable_v2 Description
+ *
+ * This protocol allows applications to act as input methods for compositors.
+ *
+ * An input method context is used to manage the state of the input method.
+ *
+ * Text strings are UTF-8 encoded, their indices and lengths are in bytes.
+ *
+ * This document adheres to the RFC 2119 when using words like "must",
+ * "should", "may", etc.
+ *
+ * Warning! The protocol described in this file is experimental and
+ * backward incompatible changes may be made. Backward compatible changes
+ * may be added together with the corresponding interface version bump.
+ * Backward incompatible changes are done by bumping the version number in
+ * the protocol and interface names and resetting the interface version.
+ * Once the protocol is to be declared stable, the 'z' prefix and the
+ * version number in the protocol and interface names are removed and the
+ * interface version number is reset.
+ *
+ * @section page_ifaces_input_method_unstable_v2 Interfaces
+ * - @subpage page_iface_zwp_input_method_v2 - input method
+ * - @subpage page_iface_zwp_input_popup_surface_v2 - popup surface
+ * - @subpage page_iface_zwp_input_method_keyboard_grab_v2 - keyboard grab
+ * - @subpage page_iface_zwp_input_method_manager_v2 - input method manager
+ * @section page_copyright_input_method_unstable_v2 Copyright
+ * <pre>
+ *
+ * Copyright © 2008-2011 Kristian Høgsberg
+ * Copyright © 2010-2011 Intel Corporation
+ * Copyright © 2012-2013 Collabora, Ltd.
+ * Copyright © 2012, 2013 Intel Corporation
+ * Copyright © 2015, 2016 Jan Arne Petersen
+ * Copyright © 2017, 2018 Red Hat, Inc.
+ * Copyright © 2018       Purism SPC
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice (including the next
+ * paragraph) shall be included in all copies or substantial portions of the
+ * Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
+ * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
+ * DEALINGS IN THE SOFTWARE.
+ * </pre>
+ */
+struct wl_seat;
+struct wl_surface;
+struct zwp_input_method_keyboard_grab_v2;
+struct zwp_input_method_manager_v2;
+struct zwp_input_method_v2;
+struct zwp_input_popup_surface_v2;
+
+#ifndef ZWP_INPUT_METHOD_V2_INTERFACE
+#define ZWP_INPUT_METHOD_V2_INTERFACE
+/**
+ * @page page_iface_zwp_input_method_v2 zwp_input_method_v2
+ * @section page_iface_zwp_input_method_v2_desc Description
+ *
+ * An input method object allows for clients to compose text.
+ *
+ * The objects connects the client to a text input in an application, and
+ * lets the client to serve as an input method for a seat.
+ *
+ * The zwp_input_method_v2 object can occupy two distinct states: active and
+ * inactive. In the active state, the object is associated to and
+ * communicates with a text input. In the inactive state, there is no
+ * associated text input, and the only communication is with the compositor.
+ * Initially, the input method is in the inactive state.
+ *
+ * Requests issued in the inactive state must be accepted by the compositor.
+ * Because of the serial mechanism, and the state reset on activate event,
+ * they will not have any effect on the state of the next text input.
+ *
+ * There must be no more than one input method object per seat.
+ * @section page_iface_zwp_input_method_v2_api API
+ * See @ref iface_zwp_input_method_v2.
+ */
+/**
+ * @defgroup iface_zwp_input_method_v2 The zwp_input_method_v2 interface
+ *
+ * An input method object allows for clients to compose text.
+ *
+ * The objects connects the client to a text input in an application, and
+ * lets the client to serve as an input method for a seat.
+ *
+ * The zwp_input_method_v2 object can occupy two distinct states: active and
+ * inactive. In the active state, the object is associated to and
+ * communicates with a text input. In the inactive state, there is no
+ * associated text input, and the only communication is with the compositor.
+ * Initially, the input method is in the inactive state.
+ *
+ * Requests issued in the inactive state must be accepted by the compositor.
+ * Because of the serial mechanism, and the state reset on activate event,
+ * they will not have any effect on the state of the next text input.
+ *
+ * There must be no more than one input method object per seat.
+ */
+extern const struct wl_interface zwp_input_method_v2_interface;
+#endif
+#ifndef ZWP_INPUT_POPUP_SURFACE_V2_INTERFACE
+#define ZWP_INPUT_POPUP_SURFACE_V2_INTERFACE
+/**
+ * @page page_iface_zwp_input_popup_surface_v2 zwp_input_popup_surface_v2
+ * @section page_iface_zwp_input_popup_surface_v2_desc Description
+ *
+ * This interface marks a surface as a popup for interacting with an input
+ * method.
+ *
+ * The compositor should place it near the active text input area. It must
+ * be visible if and only if the input method is in the active state.
+ *
+ * The client must not destroy the underlying wl_surface while the
+ * zwp_input_popup_surface_v2 object exists.
+ * @section page_iface_zwp_input_popup_surface_v2_api API
+ * See @ref iface_zwp_input_popup_surface_v2.
+ */
+/**
+ * @defgroup iface_zwp_input_popup_surface_v2 The zwp_input_popup_surface_v2 interface
+ *
+ * This interface marks a surface as a popup for interacting with an input
+ * method.
+ *
+ * The compositor should place it near the active text input area. It must
+ * be visible if and only if the input method is in the active state.
+ *
+ * The client must not destroy the underlying wl_surface while the
+ * zwp_input_popup_surface_v2 object exists.
+ */
+extern const struct wl_interface zwp_input_popup_surface_v2_interface;
+#endif
+#ifndef ZWP_INPUT_METHOD_KEYBOARD_GRAB_V2_INTERFACE
+#define ZWP_INPUT_METHOD_KEYBOARD_GRAB_V2_INTERFACE
+/**
+ * @page page_iface_zwp_input_method_keyboard_grab_v2 zwp_input_method_keyboard_grab_v2
+ * @section page_iface_zwp_input_method_keyboard_grab_v2_desc Description
+ *
+ * The zwp_input_method_keyboard_grab_v2 interface represents an exclusive
+ * grab of the wl_keyboard interface associated with the seat.
+ * @section page_iface_zwp_input_method_keyboard_grab_v2_api API
+ * See @ref iface_zwp_input_method_keyboard_grab_v2.
+ */
+/**
+ * @defgroup iface_zwp_input_method_keyboard_grab_v2 The zwp_input_method_keyboard_grab_v2 interface
+ *
+ * The zwp_input_method_keyboard_grab_v2 interface represents an exclusive
+ * grab of the wl_keyboard interface associated with the seat.
+ */
+extern const struct wl_interface zwp_input_method_keyboard_grab_v2_interface;
+#endif
+#ifndef ZWP_INPUT_METHOD_MANAGER_V2_INTERFACE
+#define ZWP_INPUT_METHOD_MANAGER_V2_INTERFACE
+/**
+ * @page page_iface_zwp_input_method_manager_v2 zwp_input_method_manager_v2
+ * @section page_iface_zwp_input_method_manager_v2_desc Description
+ *
+ * The input method manager allows the client to become the input method on
+ * a chosen seat.
+ *
+ * No more than one input method must be associated with any seat at any
+ * given time.
+ * @section page_iface_zwp_input_method_manager_v2_api API
+ * See @ref iface_zwp_input_method_manager_v2.
+ */
+/**
+ * @defgroup iface_zwp_input_method_manager_v2 The zwp_input_method_manager_v2 interface
+ *
+ * The input method manager allows the client to become the input method on
+ * a chosen seat.
+ *
+ * No more than one input method must be associated with any seat at any
+ * given time.
+ */
+extern const struct wl_interface zwp_input_method_manager_v2_interface;
+#endif
+
+/**
+ * @ingroup iface_zwp_input_method_v2
+ * @struct zwp_input_method_v2_listener
+ */
+struct zwp_input_method_v2_listener {
+	/**
+	 * input method has been requested
+	 *
+	 * Notification that a text input focused on this seat requested
+	 * the input method to be activated.
+	 *
+	 * This event serves the purpose of providing the compositor with
+	 * an active input method.
+	 *
+	 * This event resets all state associated with previous enable,
+	 * disable, surrounding_text, text_change_cause, and content_type
+	 * events, as well as the state associated with set_preedit_string,
+	 * commit_string, and delete_surrounding_text requests. In
+	 * addition, it marks the zwp_input_method_v2 object as active, and
+	 * makes any existing zwp_input_popup_surface_v2 objects visible.
+	 *
+	 * The surrounding_text, and content_type events must follow before
+	 * the next done event if the text input supports the respective
+	 * functionality.
+	 *
+	 * State set with this event is double-buffered. It will get
+	 * applied on the next zwp_input_method_v2.done event, and stay
+	 * valid until changed.
+	 */
+	void (*activate)(void *data,
+			 struct zwp_input_method_v2 *zwp_input_method_v2);
+	/**
+	 * deactivate event
+	 *
+	 * Notification that no focused text input currently needs an
+	 * active input method on this seat.
+	 *
+	 * This event marks the zwp_input_method_v2 object as inactive. The
+	 * compositor must make all existing zwp_input_popup_surface_v2
+	 * objects invisible until the next activate event.
+	 *
+	 * State set with this event is double-buffered. It will get
+	 * applied on the next zwp_input_method_v2.done event, and stay
+	 * valid until changed.
+	 */
+	void (*deactivate)(void *data,
+			   struct zwp_input_method_v2 *zwp_input_method_v2);
+	/**
+	 * surrounding text event
+	 *
+	 * Updates the surrounding plain text around the cursor,
+	 * excluding the preedit text.
+	 *
+	 * If any preedit text is present, it is replaced with the cursor
+	 * for the purpose of this event.
+	 *
+	 * The argument text is a buffer containing the preedit string, and
+	 * must include the cursor position, and the complete selection. It
+	 * should contain additional characters before and after these.
+	 * There is a maximum length of wayland messages, so text can not
+	 * be longer than 4000 bytes.
+	 *
+	 * cursor is the byte offset of the cursor within the text buffer.
+	 *
+	 * anchor is the byte offset of the selection anchor within the
+	 * text buffer. If there is no selected text, anchor must be the
+	 * same as cursor.
+	 *
+	 * If this event does not arrive before the first done event, the
+	 * input method may assume that the text input does not support
+	 * this functionality and ignore following surrounding_text events.
+	 *
+	 * Values set with this event are double-buffered. They will get
+	 * applied and set to initial values on the next
+	 * zwp_input_method_v2.done event.
+	 *
+	 * The initial state for affected fields is empty, meaning that the
+	 * text input does not support sending surrounding text. If the
+	 * empty values get applied, subsequent attempts to change them may
+	 * have no effect.
+	 */
+	void (*surrounding_text)(void *data,
+				 struct zwp_input_method_v2 *zwp_input_method_v2,
+				 const char *text,
+				 uint32_t cursor,
+				 uint32_t anchor);
+	/**
+	 * indicates the cause of surrounding text change
+	 *
+	 * Tells the input method why the text surrounding the cursor
+	 * changed.
+	 *
+	 * Whenever the client detects an external change in text, cursor,
+	 * or anchor position, it must issue this request to the
+	 * compositor. This request is intended to give the input method a
+	 * chance to update the preedit text in an appropriate way, e.g. by
+	 * removing it when the user starts typing with a keyboard.
+	 *
+	 * cause describes the source of the change.
+	 *
+	 * The value set with this event is double-buffered. It will get
+	 * applied and set to its initial value on the next
+	 * zwp_input_method_v2.done event.
+	 *
+	 * The initial value of cause is input_method.
+	 */
+	void (*text_change_cause)(void *data,
+				  struct zwp_input_method_v2 *zwp_input_method_v2,
+				  uint32_t cause);
+	/**
+	 * content purpose and hint
+	 *
+	 * Indicates the content type and hint for the current
+	 * zwp_input_method_v2 instance.
+	 *
+	 * Values set with this event are double-buffered. They will get
+	 * applied on the next zwp_input_method_v2.done event.
+	 *
+	 * The initial value for hint is none, and the initial value for
+	 * purpose is normal.
+	 */
+	void (*content_type)(void *data,
+			     struct zwp_input_method_v2 *zwp_input_method_v2,
+			     uint32_t hint,
+			     uint32_t purpose);
+	/**
+	 * apply state
+	 *
+	 * Atomically applies state changes recently sent to the client.
+	 *
+	 * The done event establishes and updates the state of the client,
+	 * and must be issued after any changes to apply them.
+	 *
+	 * Text input state (content purpose, content hint, surrounding
+	 * text, and change cause) is conceptually double-buffered within
+	 * an input method context.
+	 *
+	 * Events modify the pending state, as opposed to the current state
+	 * in use by the input method. A done event atomically applies all
+	 * pending state, replacing the current state. After done, the new
+	 * pending state is as documented for each related request.
+	 *
+	 * Events must be applied in the order of arrival.
+	 *
+	 * Neither current nor pending state are modified unless noted
+	 * otherwise.
+	 */
+	void (*done)(void *data,
+		     struct zwp_input_method_v2 *zwp_input_method_v2);
+	/**
+	 * input method unavailable
+	 *
+	 * The input method ceased to be available.
+	 *
+	 * The compositor must issue this event as the only event on the
+	 * object if there was another input_method object associated with
+	 * the same seat at the time of its creation.
+	 *
+	 * The compositor must issue this request when the object is no
+	 * longer useable, e.g. due to seat removal.
+	 *
+	 * The input method context becomes inert and should be destroyed
+	 * after deactivation is handled. Any further requests and events
+	 * except for the destroy request must be ignored.
+	 */
+	void (*unavailable)(void *data,
+			    struct zwp_input_method_v2 *zwp_input_method_v2);
+};
+
+/**
+ * @ingroup iface_zwp_input_method_v2
+ */
+static inline int
+zwp_input_method_v2_add_listener(struct zwp_input_method_v2 *zwp_input_method_v2,
+				 const struct zwp_input_method_v2_listener *listener, void *data)
+{
+	return wl_proxy_add_listener((struct wl_proxy *) zwp_input_method_v2,
+				     (void (**)(void)) listener, data);
+}
+
+#define ZWP_INPUT_METHOD_V2_COMMIT_STRING 0
+#define ZWP_INPUT_METHOD_V2_SET_PREEDIT_STRING 1
+#define ZWP_INPUT_METHOD_V2_DELETE_SURROUNDING_TEXT 2
+#define ZWP_INPUT_METHOD_V2_COMMIT 3
+#define ZWP_INPUT_METHOD_V2_GET_INPUT_POPUP_SURFACE 4
+#define ZWP_INPUT_METHOD_V2_GRAB_KEYBOARD 5
+#define ZWP_INPUT_METHOD_V2_DESTROY 6
+
+/**
+ * @ingroup iface_zwp_input_method_v2
+ */
+#define ZWP_INPUT_METHOD_V2_ACTIVATE_SINCE_VERSION 1
+/**
+ * @ingroup iface_zwp_input_method_v2
+ */
+#define ZWP_INPUT_METHOD_V2_DEACTIVATE_SINCE_VERSION 1
+/**
+ * @ingroup iface_zwp_input_method_v2
+ */
+#define ZWP_INPUT_METHOD_V2_SURROUNDING_TEXT_SINCE_VERSION 1
+/**
+ * @ingroup iface_zwp_input_method_v2
+ */
+#define ZWP_INPUT_METHOD_V2_TEXT_CHANGE_CAUSE_SINCE_VERSION 1
+/**
+ * @ingroup iface_zwp_input_method_v2
+ */
+#define ZWP_INPUT_METHOD_V2_CONTENT_TYPE_SINCE_VERSION 1
+/**
+ * @ingroup iface_zwp_input_method_v2
+ */
+#define ZWP_INPUT_METHOD_V2_DONE_SINCE_VERSION 1
+/**
+ * @ingroup iface_zwp_input_method_v2
+ */
+#define ZWP_INPUT_METHOD_V2_UNAVAILABLE_SINCE_VERSION 1
+
+/**
+ * @ingroup iface_zwp_input_method_v2
+ */
+#define ZWP_INPUT_METHOD_V2_COMMIT_STRING_SINCE_VERSION 1
+/**
+ * @ingroup iface_zwp_input_method_v2
+ */
+#define ZWP_INPUT_METHOD_V2_SET_PREEDIT_STRING_SINCE_VERSION 1
+/**
+ * @ingroup iface_zwp_input_method_v2
+ */
+#define ZWP_INPUT_METHOD_V2_DELETE_SURROUNDING_TEXT_SINCE_VERSION 1
+/**
+ * @ingroup iface_zwp_input_method_v2
+ */
+#define ZWP_INPUT_METHOD_V2_COMMIT_SINCE_VERSION 1
+/**
+ * @ingroup iface_zwp_input_method_v2
+ */
+#define ZWP_INPUT_METHOD_V2_GET_INPUT_POPUP_SURFACE_SINCE_VERSION 1
+/**
+ * @ingroup iface_zwp_input_method_v2
+ */
+#define ZWP_INPUT_METHOD_V2_GRAB_KEYBOARD_SINCE_VERSION 1
+/**
+ * @ingroup iface_zwp_input_method_v2
+ */
+#define ZWP_INPUT_METHOD_V2_DESTROY_SINCE_VERSION 1
+
+/** @ingroup iface_zwp_input_method_v2 */
+static inline void
+zwp_input_method_v2_set_user_data(struct zwp_input_method_v2 *zwp_input_method_v2, void *user_data)
+{
+	wl_proxy_set_user_data((struct wl_proxy *) zwp_input_method_v2, user_data);
+}
+
+/** @ingroup iface_zwp_input_method_v2 */
+static inline void *
+zwp_input_method_v2_get_user_data(struct zwp_input_method_v2 *zwp_input_method_v2)
+{
+	return wl_proxy_get_user_data((struct wl_proxy *) zwp_input_method_v2);
+}
+
+static inline uint32_t
+zwp_input_method_v2_get_version(struct zwp_input_method_v2 *zwp_input_method_v2)
+{
+	return wl_proxy_get_version((struct wl_proxy *) zwp_input_method_v2);
+}
+
+/**
+ * @ingroup iface_zwp_input_method_v2
+ *
+ * Send the commit string text for insertion to the application.
+ *
+ * Inserts a string at current cursor position (see commit event
+ * sequence). The string to commit could be either just a single character
+ * after a key press or the result of some composing.
+ *
+ * The argument text is a buffer containing the string to insert. There is
+ * a maximum length of wayland messages, so text can not be longer than
+ * 4000 bytes.
+ *
+ * Values set with this event are double-buffered. They must be applied
+ * and reset to initial on the next zwp_text_input_v3.commit request.
+ *
+ * The initial value of text is an empty string.
+ */
+static inline void
+zwp_input_method_v2_commit_string(struct zwp_input_method_v2 *zwp_input_method_v2, const char *text)
+{
+	wl_proxy_marshal_flags((struct wl_proxy *) zwp_input_method_v2,
+			 ZWP_INPUT_METHOD_V2_COMMIT_STRING, NULL, wl_proxy_get_version((struct wl_proxy *) zwp_input_method_v2), 0, text);
+}
+
+/**
+ * @ingroup iface_zwp_input_method_v2
+ *
+ * Send the pre-edit string text to the application text input.
+ *
+ * Place a new composing text (pre-edit) at the current cursor position.
+ * Any previously set composing text must be removed. Any previously
+ * existing selected text must be removed. The cursor is moved to a new
+ * position within the preedit string.
+ *
+ * The argument text is a buffer containing the preedit string. There is
+ * a maximum length of wayland messages, so text can not be longer than
+ * 4000 bytes.
+ *
+ * The arguments cursor_begin and cursor_end are counted in bytes relative
+ * to the beginning of the submitted string buffer. Cursor should be
+ * hidden by the text input when both are equal to -1.
+ *
+ * cursor_begin indicates the beginning of the cursor. cursor_end
+ * indicates the end of the cursor. It may be equal or different than
+ * cursor_begin.
+ *
+ * Values set with this event are double-buffered. They must be applied on
+ * the next zwp_input_method_v2.commit event.
+ *
+ * The initial value of text is an empty string. The initial value of
+ * cursor_begin, and cursor_end are both 0.
+ */
+static inline void
+zwp_input_method_v2_set_preedit_string(struct zwp_input_method_v2 *zwp_input_method_v2, const char *text, int32_t cursor_begin, int32_t cursor_end)
+{
+	wl_proxy_marshal_flags((struct wl_proxy *) zwp_input_method_v2,
+			 ZWP_INPUT_METHOD_V2_SET_PREEDIT_STRING, NULL, wl_proxy_get_version((struct wl_proxy *) zwp_input_method_v2), 0, text, cursor_begin, cursor_end);
+}
+
+/**
+ * @ingroup iface_zwp_input_method_v2
+ *
+ * Remove the surrounding text.
+ *
+ * before_length and after_length are the number of bytes before and after
+ * the current cursor index (excluding the preedit text) to delete.
+ *
+ * If any preedit text is present, it is replaced with the cursor for the
+ * purpose of this event. In effect before_length is counted from the
+ * beginning of preedit text, and after_length from its end (see commit
+ * event sequence).
+ *
+ * Values set with this event are double-buffered. They must be applied
+ * and reset to initial on the next zwp_input_method_v2.commit request.
+ *
+ * The initial values of both before_length and after_length are 0.
+ */
+static inline void
+zwp_input_method_v2_delete_surrounding_text(struct zwp_input_method_v2 *zwp_input_method_v2, uint32_t before_length, uint32_t after_length)
+{
+	wl_proxy_marshal_flags((struct wl_proxy *) zwp_input_method_v2,
+			 ZWP_INPUT_METHOD_V2_DELETE_SURROUNDING_TEXT, NULL, wl_proxy_get_version((struct wl_proxy *) zwp_input_method_v2), 0, before_length, after_length);
+}
+
+/**
+ * @ingroup iface_zwp_input_method_v2
+ *
+ * Apply state changes from commit_string, set_preedit_string and
+ * delete_surrounding_text requests.
+ *
+ * The state relating to these events is double-buffered, and each one
+ * modifies the pending state. This request replaces the current state
+ * with the pending state.
+ *
+ * The connected text input is expected to proceed by evaluating the
+ * changes in the following order:
+ *
+ * 1. Replace existing preedit string with the cursor.
+ * 2. Delete requested surrounding text.
+ * 3. Insert commit string with the cursor at its end.
+ * 4. Calculate surrounding text to send.
+ * 5. Insert new preedit text in cursor position.
+ * 6. Place cursor inside preedit text.
+ *
+ * The serial number reflects the last state of the zwp_input_method_v2
+ * object known to the client. The value of the serial argument must be
+ * equal to the number of done events already issued by that object. When
+ * the compositor receives a commit request with a serial different than
+ * the number of past done events, it must proceed as normal, except it
+ * should not change the current state of the zwp_input_method_v2 object.
+ */
+static inline void
+zwp_input_method_v2_commit(struct zwp_input_method_v2 *zwp_input_method_v2, uint32_t serial)
+{
+	wl_proxy_marshal_flags((struct wl_proxy *) zwp_input_method_v2,
+			 ZWP_INPUT_METHOD_V2_COMMIT, NULL, wl_proxy_get_version((struct wl_proxy *) zwp_input_method_v2), 0, serial);
+}
+
+/**
+ * @ingroup iface_zwp_input_method_v2
+ *
+ * Creates a new zwp_input_popup_surface_v2 object wrapping a given
+ * surface.
+ *
+ * The surface gets assigned the "input_popup" role. If the surface
+ * already has an assigned role, the compositor must issue a protocol
+ * error.
+ */
+static inline struct zwp_input_popup_surface_v2 *
+zwp_input_method_v2_get_input_popup_surface(struct zwp_input_method_v2 *zwp_input_method_v2, struct wl_surface *surface)
+{
+	struct wl_proxy *id;
+
+	id = wl_proxy_marshal_flags((struct wl_proxy *) zwp_input_method_v2,
+			 ZWP_INPUT_METHOD_V2_GET_INPUT_POPUP_SURFACE, &zwp_input_popup_surface_v2_interface, wl_proxy_get_version((struct wl_proxy *) zwp_input_method_v2), 0, NULL, surface);
+
+	return (struct zwp_input_popup_surface_v2 *) id;
+}
+
+/**
+ * @ingroup iface_zwp_input_method_v2
+ *
+ * Allow an input method to receive hardware keyboard input and process
+ * key events to generate text events (with pre-edit) over the wire. This
+ * allows input methods which compose multiple key events for inputting
+ * text like it is done for CJK languages.
+ *
+ * The compositor should send all keyboard events on the seat to the grab
+ * holder via the returned wl_keyboard object. Nevertheless, the
+ * compositor may decide not to forward any particular event. The
+ * compositor must not further process any event after it has been
+ * forwarded to the grab holder.
+ *
+ * Releasing the resulting wl_keyboard object releases the grab.
+ */
+static inline struct zwp_input_method_keyboard_grab_v2 *
+zwp_input_method_v2_grab_keyboard(struct zwp_input_method_v2 *zwp_input_method_v2)
+{
+	struct wl_proxy *keyboard;
+
+	keyboard = wl_proxy_marshal_flags((struct wl_proxy *) zwp_input_method_v2,
+			 ZWP_INPUT_METHOD_V2_GRAB_KEYBOARD, &zwp_input_method_keyboard_grab_v2_interface, wl_proxy_get_version((struct wl_proxy *) zwp_input_method_v2), 0, NULL);
+
+	return (struct zwp_input_method_keyboard_grab_v2 *) keyboard;
+}
+
+/**
+ * @ingroup iface_zwp_input_method_v2
+ *
+ * Destroys the zwp_text_input_v2 object and any associated child
+ * objects, i.e. zwp_input_popup_surface_v2 and
+ * zwp_input_method_keyboard_grab_v2.
+ */
+static inline void
+zwp_input_method_v2_destroy(struct zwp_input_method_v2 *zwp_input_method_v2)
+{
+	wl_proxy_marshal_flags((struct wl_proxy *) zwp_input_method_v2,
+			 ZWP_INPUT_METHOD_V2_DESTROY, NULL, wl_proxy_get_version((struct wl_proxy *) zwp_input_method_v2), WL_MARSHAL_FLAG_DESTROY);
+}
+
+/**
+ * @ingroup iface_zwp_input_popup_surface_v2
+ * @struct zwp_input_popup_surface_v2_listener
+ */
+struct zwp_input_popup_surface_v2_listener {
+	/**
+	 * set text input area position
+	 *
+	 * Notify about the position of the area of the text input
+	 * expressed as a rectangle in surface local coordinates.
+	 *
+	 * This is a hint to the input method telling it the relative
+	 * position of the text being entered.
+	 */
+	void (*text_input_rectangle)(void *data,
+				     struct zwp_input_popup_surface_v2 *zwp_input_popup_surface_v2,
+				     int32_t x,
+				     int32_t y,
+				     int32_t width,
+				     int32_t height);
+};
+
+/**
+ * @ingroup iface_zwp_input_popup_surface_v2
+ */
+static inline int
+zwp_input_popup_surface_v2_add_listener(struct zwp_input_popup_surface_v2 *zwp_input_popup_surface_v2,
+					const struct zwp_input_popup_surface_v2_listener *listener, void *data)
+{
+	return wl_proxy_add_listener((struct wl_proxy *) zwp_input_popup_surface_v2,
+				     (void (**)(void)) listener, data);
+}
+
+#define ZWP_INPUT_POPUP_SURFACE_V2_DESTROY 0
+
+/**
+ * @ingroup iface_zwp_input_popup_surface_v2
+ */
+#define ZWP_INPUT_POPUP_SURFACE_V2_TEXT_INPUT_RECTANGLE_SINCE_VERSION 1
+
+/**
+ * @ingroup iface_zwp_input_popup_surface_v2
+ */
+#define ZWP_INPUT_POPUP_SURFACE_V2_DESTROY_SINCE_VERSION 1
+
+/** @ingroup iface_zwp_input_popup_surface_v2 */
+static inline void
+zwp_input_popup_surface_v2_set_user_data(struct zwp_input_popup_surface_v2 *zwp_input_popup_surface_v2, void *user_data)
+{
+	wl_proxy_set_user_data((struct wl_proxy *) zwp_input_popup_surface_v2, user_data);
+}
+
+/** @ingroup iface_zwp_input_popup_surface_v2 */
+static inline void *
+zwp_input_popup_surface_v2_get_user_data(struct zwp_input_popup_surface_v2 *zwp_input_popup_surface_v2)
+{
+	return wl_proxy_get_user_data((struct wl_proxy *) zwp_input_popup_surface_v2);
+}
+
+static inline uint32_t
+zwp_input_popup_surface_v2_get_version(struct zwp_input_popup_surface_v2 *zwp_input_popup_surface_v2)
+{
+	return wl_proxy_get_version((struct wl_proxy *) zwp_input_popup_surface_v2);
+}
+
+/**
+ * @ingroup iface_zwp_input_popup_surface_v2
+ */
+static inline void
+zwp_input_popup_surface_v2_destroy(struct zwp_input_popup_surface_v2 *zwp_input_popup_surface_v2)
+{
+	wl_proxy_marshal_flags((struct wl_proxy *) zwp_input_popup_surface_v2,
+			 ZWP_INPUT_POPUP_SURFACE_V2_DESTROY, NULL, wl_proxy_get_version((struct wl_proxy *) zwp_input_popup_surface_v2), WL_MARSHAL_FLAG_DESTROY);
+}
+
+/**
+ * @ingroup iface_zwp_input_method_keyboard_grab_v2
+ * @struct zwp_input_method_keyboard_grab_v2_listener
+ */
+struct zwp_input_method_keyboard_grab_v2_listener {
+	/**
+	 * keyboard mapping
+	 *
+	 * This event provides a file descriptor to the client which can
+	 * be memory-mapped to provide a keyboard mapping description.
+	 * @param format keymap format
+	 * @param fd keymap file descriptor
+	 * @param size keymap size, in bytes
+	 */
+	void (*keymap)(void *data,
+		       struct zwp_input_method_keyboard_grab_v2 *zwp_input_method_keyboard_grab_v2,
+		       uint32_t format,
+		       int32_t fd,
+		       uint32_t size);
+	/**
+	 * key event
+	 *
+	 * A key was pressed or released. The time argument is a
+	 * timestamp with millisecond granularity, with an undefined base.
+	 * @param serial serial number of the key event
+	 * @param time timestamp with millisecond granularity
+	 * @param key key that produced the event
+	 * @param state physical state of the key
+	 */
+	void (*key)(void *data,
+		    struct zwp_input_method_keyboard_grab_v2 *zwp_input_method_keyboard_grab_v2,
+		    uint32_t serial,
+		    uint32_t time,
+		    uint32_t key,
+		    uint32_t state);
+	/**
+	 * modifier and group state
+	 *
+	 * Notifies clients that the modifier and/or group state has
+	 * changed, and it should update its local state.
+	 * @param serial serial number of the modifiers event
+	 * @param mods_depressed depressed modifiers
+	 * @param mods_latched latched modifiers
+	 * @param mods_locked locked modifiers
+	 * @param group keyboard layout
+	 */
+	void (*modifiers)(void *data,
+			  struct zwp_input_method_keyboard_grab_v2 *zwp_input_method_keyboard_grab_v2,
+			  uint32_t serial,
+			  uint32_t mods_depressed,
+			  uint32_t mods_latched,
+			  uint32_t mods_locked,
+			  uint32_t group);
+	/**
+	 * repeat rate and delay
+	 *
+	 * Informs the client about the keyboard's repeat rate and delay.
+	 *
+	 * This event is sent as soon as the
+	 * zwp_input_method_keyboard_grab_v2 object has been created, and
+	 * is guaranteed to be received by the client before any key press
+	 * event.
+	 *
+	 * Negative values for either rate or delay are illegal. A rate of
+	 * zero will disable any repeating (regardless of the value of
+	 * delay).
+	 *
+	 * This event can be sent later on as well with a new value if
+	 * necessary, so clients should continue listening for the event
+	 * past the creation of zwp_input_method_keyboard_grab_v2.
+	 * @param rate the rate of repeating keys in characters per second
+	 * @param delay delay in milliseconds since key down until repeating starts
+	 */
+	void (*repeat_info)(void *data,
+			    struct zwp_input_method_keyboard_grab_v2 *zwp_input_method_keyboard_grab_v2,
+			    int32_t rate,
+			    int32_t delay);
+};
+
+/**
+ * @ingroup iface_zwp_input_method_keyboard_grab_v2
+ */
+static inline int
+zwp_input_method_keyboard_grab_v2_add_listener(struct zwp_input_method_keyboard_grab_v2 *zwp_input_method_keyboard_grab_v2,
+					       const struct zwp_input_method_keyboard_grab_v2_listener *listener, void *data)
+{
+	return wl_proxy_add_listener((struct wl_proxy *) zwp_input_method_keyboard_grab_v2,
+				     (void (**)(void)) listener, data);
+}
+
+#define ZWP_INPUT_METHOD_KEYBOARD_GRAB_V2_RELEASE 0
+
+/**
+ * @ingroup iface_zwp_input_method_keyboard_grab_v2
+ */
+#define ZWP_INPUT_METHOD_KEYBOARD_GRAB_V2_KEYMAP_SINCE_VERSION 1
+/**
+ * @ingroup iface_zwp_input_method_keyboard_grab_v2
+ */
+#define ZWP_INPUT_METHOD_KEYBOARD_GRAB_V2_KEY_SINCE_VERSION 1
+/**
+ * @ingroup iface_zwp_input_method_keyboard_grab_v2
+ */
+#define ZWP_INPUT_METHOD_KEYBOARD_GRAB_V2_MODIFIERS_SINCE_VERSION 1
+/**
+ * @ingroup iface_zwp_input_method_keyboard_grab_v2
+ */
+#define ZWP_INPUT_METHOD_KEYBOARD_GRAB_V2_REPEAT_INFO_SINCE_VERSION 1
+
+/**
+ * @ingroup iface_zwp_input_method_keyboard_grab_v2
+ */
+#define ZWP_INPUT_METHOD_KEYBOARD_GRAB_V2_RELEASE_SINCE_VERSION 1
+
+/** @ingroup iface_zwp_input_method_keyboard_grab_v2 */
+static inline void
+zwp_input_method_keyboard_grab_v2_set_user_data(struct zwp_input_method_keyboard_grab_v2 *zwp_input_method_keyboard_grab_v2, void *user_data)
+{
+	wl_proxy_set_user_data((struct wl_proxy *) zwp_input_method_keyboard_grab_v2, user_data);
+}
+
+/** @ingroup iface_zwp_input_method_keyboard_grab_v2 */
+static inline void *
+zwp_input_method_keyboard_grab_v2_get_user_data(struct zwp_input_method_keyboard_grab_v2 *zwp_input_method_keyboard_grab_v2)
+{
+	return wl_proxy_get_user_data((struct wl_proxy *) zwp_input_method_keyboard_grab_v2);
+}
+
+static inline uint32_t
+zwp_input_method_keyboard_grab_v2_get_version(struct zwp_input_method_keyboard_grab_v2 *zwp_input_method_keyboard_grab_v2)
+{
+	return wl_proxy_get_version((struct wl_proxy *) zwp_input_method_keyboard_grab_v2);
+}
+
+/** @ingroup iface_zwp_input_method_keyboard_grab_v2 */
+static inline void
+zwp_input_method_keyboard_grab_v2_destroy(struct zwp_input_method_keyboard_grab_v2 *zwp_input_method_keyboard_grab_v2)
+{
+	wl_proxy_destroy((struct wl_proxy *) zwp_input_method_keyboard_grab_v2);
+}
+
+/**
+ * @ingroup iface_zwp_input_method_keyboard_grab_v2
+ */
+static inline void
+zwp_input_method_keyboard_grab_v2_release(struct zwp_input_method_keyboard_grab_v2 *zwp_input_method_keyboard_grab_v2)
+{
+	wl_proxy_marshal_flags((struct wl_proxy *) zwp_input_method_keyboard_grab_v2,
+			 ZWP_INPUT_METHOD_KEYBOARD_GRAB_V2_RELEASE, NULL, wl_proxy_get_version((struct wl_proxy *) zwp_input_method_keyboard_grab_v2), WL_MARSHAL_FLAG_DESTROY);
+}
+
+#define ZWP_INPUT_METHOD_MANAGER_V2_GET_INPUT_METHOD 0
+#define ZWP_INPUT_METHOD_MANAGER_V2_DESTROY 1
+
+
+/**
+ * @ingroup iface_zwp_input_method_manager_v2
+ */
+#define ZWP_INPUT_METHOD_MANAGER_V2_GET_INPUT_METHOD_SINCE_VERSION 1
+/**
+ * @ingroup iface_zwp_input_method_manager_v2
+ */
+#define ZWP_INPUT_METHOD_MANAGER_V2_DESTROY_SINCE_VERSION 1
+
+/** @ingroup iface_zwp_input_method_manager_v2 */
+static inline void
+zwp_input_method_manager_v2_set_user_data(struct zwp_input_method_manager_v2 *zwp_input_method_manager_v2, void *user_data)
+{
+	wl_proxy_set_user_data((struct wl_proxy *) zwp_input_method_manager_v2, user_data);
+}
+
+/** @ingroup iface_zwp_input_method_manager_v2 */
+static inline void *
+zwp_input_method_manager_v2_get_user_data(struct zwp_input_method_manager_v2 *zwp_input_method_manager_v2)
+{
+	return wl_proxy_get_user_data((struct wl_proxy *) zwp_input_method_manager_v2);
+}
+
+static inline uint32_t
+zwp_input_method_manager_v2_get_version(struct zwp_input_method_manager_v2 *zwp_input_method_manager_v2)
+{
+	return wl_proxy_get_version((struct wl_proxy *) zwp_input_method_manager_v2);
+}
+
+/**
+ * @ingroup iface_zwp_input_method_manager_v2
+ *
+ * Request a new input zwp_input_method_v2 object associated with a given
+ * seat.
+ */
+static inline struct zwp_input_method_v2 *
+zwp_input_method_manager_v2_get_input_method(struct zwp_input_method_manager_v2 *zwp_input_method_manager_v2, struct wl_seat *seat)
+{
+	struct wl_proxy *input_method;
+
+	input_method = wl_proxy_marshal_flags((struct wl_proxy *) zwp_input_method_manager_v2,
+			 ZWP_INPUT_METHOD_MANAGER_V2_GET_INPUT_METHOD, &zwp_input_method_v2_interface, wl_proxy_get_version((struct wl_proxy *) zwp_input_method_manager_v2), 0, seat, NULL);
+
+	return (struct zwp_input_method_v2 *) input_method;
+}
+
+/**
+ * @ingroup iface_zwp_input_method_manager_v2
+ *
+ * Destroys the zwp_input_method_manager_v2 object.
+ *
+ * The zwp_input_method_v2 objects originating from it remain valid.
+ */
+static inline void
+zwp_input_method_manager_v2_destroy(struct zwp_input_method_manager_v2 *zwp_input_method_manager_v2)
+{
+	wl_proxy_marshal_flags((struct wl_proxy *) zwp_input_method_manager_v2,
+			 ZWP_INPUT_METHOD_MANAGER_V2_DESTROY, NULL, wl_proxy_get_version((struct wl_proxy *) zwp_input_method_manager_v2), WL_MARSHAL_FLAG_DESTROY);
+}
+
+#ifdef  __cplusplus
+}
+#endif
+
+#endif

include/wayland/viewporter.h

@@ -0,0 +1,398 @@
+/* Generated by wayland-scanner 1.22.0 */
+
+#ifndef VIEWPORTER_CLIENT_PROTOCOL_H
+#define VIEWPORTER_CLIENT_PROTOCOL_H
+
+#include <stdint.h>
+#include <stddef.h>
+#include "wayland-client.h"
+
+#ifdef  __cplusplus
+extern "C" {
+#endif
+
+/**
+ * @page page_viewporter The viewporter protocol
+ * @section page_ifaces_viewporter Interfaces
+ * - @subpage page_iface_wp_viewporter - surface cropping and scaling
+ * - @subpage page_iface_wp_viewport - crop and scale interface to a wl_surface
+ * @section page_copyright_viewporter Copyright
+ * <pre>
+ *
+ * Copyright © 2013-2016 Collabora, Ltd.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice (including the next
+ * paragraph) shall be included in all copies or substantial portions of the
+ * Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
+ * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
+ * DEALINGS IN THE SOFTWARE.
+ * </pre>
+ */
+struct wl_surface;
+struct wp_viewport;
+struct wp_viewporter;
+
+#ifndef WP_VIEWPORTER_INTERFACE
+#define WP_VIEWPORTER_INTERFACE
+/**
+ * @page page_iface_wp_viewporter wp_viewporter
+ * @section page_iface_wp_viewporter_desc Description
+ *
+ * The global interface exposing surface cropping and scaling
+ * capabilities is used to instantiate an interface extension for a
+ * wl_surface object. This extended interface will then allow
+ * cropping and scaling the surface contents, effectively
+ * disconnecting the direct relationship between the buffer and the
+ * surface size.
+ * @section page_iface_wp_viewporter_api API
+ * See @ref iface_wp_viewporter.
+ */
+/**
+ * @defgroup iface_wp_viewporter The wp_viewporter interface
+ *
+ * The global interface exposing surface cropping and scaling
+ * capabilities is used to instantiate an interface extension for a
+ * wl_surface object. This extended interface will then allow
+ * cropping and scaling the surface contents, effectively
+ * disconnecting the direct relationship between the buffer and the
+ * surface size.
+ */
+extern const struct wl_interface wp_viewporter_interface;
+#endif
+#ifndef WP_VIEWPORT_INTERFACE
+#define WP_VIEWPORT_INTERFACE
+/**
+ * @page page_iface_wp_viewport wp_viewport
+ * @section page_iface_wp_viewport_desc Description
+ *
+ * An additional interface to a wl_surface object, which allows the
+ * client to specify the cropping and scaling of the surface
+ * contents.
+ *
+ * This interface works with two concepts: the source rectangle (src_x,
+ * src_y, src_width, src_height), and the destination size (dst_width,
+ * dst_height). The contents of the source rectangle are scaled to the
+ * destination size, and content outside the source rectangle is ignored.
+ * This state is double-buffered, and is applied on the next
+ * wl_surface.commit.
+ *
+ * The two parts of crop and scale state are independent: the source
+ * rectangle, and the destination size. Initially both are unset, that
+ * is, no scaling is applied. The whole of the current wl_buffer is
+ * used as the source, and the surface size is as defined in
+ * wl_surface.attach.
+ *
+ * If the destination size is set, it causes the surface size to become
+ * dst_width, dst_height. The source (rectangle) is scaled to exactly
+ * this size. This overrides whatever the attached wl_buffer size is,
+ * unless the wl_buffer is NULL. If the wl_buffer is NULL, the surface
+ * has no content and therefore no size. Otherwise, the size is always
+ * at least 1x1 in surface local coordinates.
+ *
+ * If the source rectangle is set, it defines what area of the wl_buffer is
+ * taken as the source. If the source rectangle is set and the destination
+ * size is not set, then src_width and src_height must be integers, and the
+ * surface size becomes the source rectangle size. This results in cropping
+ * without scaling. If src_width or src_height are not integers and
+ * destination size is not set, the bad_size protocol error is raised when
+ * the surface state is applied.
+ *
+ * The coordinate transformations from buffer pixel coordinates up to
+ * the surface-local coordinates happen in the following order:
+ * 1. buffer_transform (wl_surface.set_buffer_transform)
+ * 2. buffer_scale (wl_surface.set_buffer_scale)
+ * 3. crop and scale (wp_viewport.set*)
+ * This means, that the source rectangle coordinates of crop and scale
+ * are given in the coordinates after the buffer transform and scale,
+ * i.e. in the coordinates that would be the surface-local coordinates
+ * if the crop and scale was not applied.
+ *
+ * If src_x or src_y are negative, the bad_value protocol error is raised.
+ * Otherwise, if the source rectangle is partially or completely outside of
+ * the non-NULL wl_buffer, then the out_of_buffer protocol error is raised
+ * when the surface state is applied. A NULL wl_buffer does not raise the
+ * out_of_buffer error.
+ *
+ * If the wl_surface associated with the wp_viewport is destroyed,
+ * all wp_viewport requests except 'destroy' raise the protocol error
+ * no_surface.
+ *
+ * If the wp_viewport object is destroyed, the crop and scale
+ * state is removed from the wl_surface. The change will be applied
+ * on the next wl_surface.commit.
+ * @section page_iface_wp_viewport_api API
+ * See @ref iface_wp_viewport.
+ */
+/**
+ * @defgroup iface_wp_viewport The wp_viewport interface
+ *
+ * An additional interface to a wl_surface object, which allows the
+ * client to specify the cropping and scaling of the surface
+ * contents.
+ *
+ * This interface works with two concepts: the source rectangle (src_x,
+ * src_y, src_width, src_height), and the destination size (dst_width,
+ * dst_height). The contents of the source rectangle are scaled to the
+ * destination size, and content outside the source rectangle is ignored.
+ * This state is double-buffered, and is applied on the next
+ * wl_surface.commit.
+ *
+ * The two parts of crop and scale state are independent: the source
+ * rectangle, and the destination size. Initially both are unset, that
+ * is, no scaling is applied. The whole of the current wl_buffer is
+ * used as the source, and the surface size is as defined in
+ * wl_surface.attach.
+ *
+ * If the destination size is set, it causes the surface size to become
+ * dst_width, dst_height. The source (rectangle) is scaled to exactly
+ * this size. This overrides whatever the attached wl_buffer size is,
+ * unless the wl_buffer is NULL. If the wl_buffer is NULL, the surface
+ * has no content and therefore no size. Otherwise, the size is always
+ * at least 1x1 in surface local coordinates.
+ *
+ * If the source rectangle is set, it defines what area of the wl_buffer is
+ * taken as the source. If the source rectangle is set and the destination
+ * size is not set, then src_width and src_height must be integers, and the
+ * surface size becomes the source rectangle size. This results in cropping
+ * without scaling. If src_width or src_height are not integers and
+ * destination size is not set, the bad_size protocol error is raised when
+ * the surface state is applied.
+ *
+ * The coordinate transformations from buffer pixel coordinates up to
+ * the surface-local coordinates happen in the following order:
+ * 1. buffer_transform (wl_surface.set_buffer_transform)
+ * 2. buffer_scale (wl_surface.set_buffer_scale)
+ * 3. crop and scale (wp_viewport.set*)
+ * This means, that the source rectangle coordinates of crop and scale
+ * are given in the coordinates after the buffer transform and scale,
+ * i.e. in the coordinates that would be the surface-local coordinates
+ * if the crop and scale was not applied.
+ *
+ * If src_x or src_y are negative, the bad_value protocol error is raised.
+ * Otherwise, if the source rectangle is partially or completely outside of
+ * the non-NULL wl_buffer, then the out_of_buffer protocol error is raised
+ * when the surface state is applied. A NULL wl_buffer does not raise the
+ * out_of_buffer error.
+ *
+ * If the wl_surface associated with the wp_viewport is destroyed,
+ * all wp_viewport requests except 'destroy' raise the protocol error
+ * no_surface.
+ *
+ * If the wp_viewport object is destroyed, the crop and scale
+ * state is removed from the wl_surface. The change will be applied
+ * on the next wl_surface.commit.
+ */
+extern const struct wl_interface wp_viewport_interface;
+#endif
+
+#ifndef WP_VIEWPORTER_ERROR_ENUM
+#define WP_VIEWPORTER_ERROR_ENUM
+enum wp_viewporter_error {
+	/**
+	 * the surface already has a viewport object associated
+	 */
+	WP_VIEWPORTER_ERROR_VIEWPORT_EXISTS = 0,
+};
+#endif /* WP_VIEWPORTER_ERROR_ENUM */
+
+#define WP_VIEWPORTER_DESTROY 0
+#define WP_VIEWPORTER_GET_VIEWPORT 1
+
+
+/**
+ * @ingroup iface_wp_viewporter
+ */
+#define WP_VIEWPORTER_DESTROY_SINCE_VERSION 1
+/**
+ * @ingroup iface_wp_viewporter
+ */
+#define WP_VIEWPORTER_GET_VIEWPORT_SINCE_VERSION 1
+
+/** @ingroup iface_wp_viewporter */
+static inline void
+wp_viewporter_set_user_data(struct wp_viewporter *wp_viewporter, void *user_data)
+{
+	wl_proxy_set_user_data((struct wl_proxy *) wp_viewporter, user_data);
+}
+
+/** @ingroup iface_wp_viewporter */
+static inline void *
+wp_viewporter_get_user_data(struct wp_viewporter *wp_viewporter)
+{
+	return wl_proxy_get_user_data((struct wl_proxy *) wp_viewporter);
+}
+
+static inline uint32_t
+wp_viewporter_get_version(struct wp_viewporter *wp_viewporter)
+{
+	return wl_proxy_get_version((struct wl_proxy *) wp_viewporter);
+}
+
+/**
+ * @ingroup iface_wp_viewporter
+ *
+ * Informs the server that the client will not be using this
+ * protocol object anymore. This does not affect any other objects,
+ * wp_viewport objects included.
+ */
+static inline void
+wp_viewporter_destroy(struct wp_viewporter *wp_viewporter)
+{
+	wl_proxy_marshal_flags((struct wl_proxy *) wp_viewporter,
+			 WP_VIEWPORTER_DESTROY, NULL, wl_proxy_get_version((struct wl_proxy *) wp_viewporter), WL_MARSHAL_FLAG_DESTROY);
+}
+
+/**
+ * @ingroup iface_wp_viewporter
+ *
+ * Instantiate an interface extension for the given wl_surface to
+ * crop and scale its content. If the given wl_surface already has
+ * a wp_viewport object associated, the viewport_exists
+ * protocol error is raised.
+ */
+static inline struct wp_viewport *
+wp_viewporter_get_viewport(struct wp_viewporter *wp_viewporter, struct wl_surface *surface)
+{
+	struct wl_proxy *id;
+
+	id = wl_proxy_marshal_flags((struct wl_proxy *) wp_viewporter,
+			 WP_VIEWPORTER_GET_VIEWPORT, &wp_viewport_interface, wl_proxy_get_version((struct wl_proxy *) wp_viewporter), 0, NULL, surface);
+
+	return (struct wp_viewport *) id;
+}
+
+#ifndef WP_VIEWPORT_ERROR_ENUM
+#define WP_VIEWPORT_ERROR_ENUM
+enum wp_viewport_error {
+	/**
+	 * negative or zero values in width or height
+	 */
+	WP_VIEWPORT_ERROR_BAD_VALUE = 0,
+	/**
+	 * destination size is not integer
+	 */
+	WP_VIEWPORT_ERROR_BAD_SIZE = 1,
+	/**
+	 * source rectangle extends outside of the content area
+	 */
+	WP_VIEWPORT_ERROR_OUT_OF_BUFFER = 2,
+	/**
+	 * the wl_surface was destroyed
+	 */
+	WP_VIEWPORT_ERROR_NO_SURFACE = 3,
+};
+#endif /* WP_VIEWPORT_ERROR_ENUM */
+
+#define WP_VIEWPORT_DESTROY 0
+#define WP_VIEWPORT_SET_SOURCE 1
+#define WP_VIEWPORT_SET_DESTINATION 2
+
+
+/**
+ * @ingroup iface_wp_viewport
+ */
+#define WP_VIEWPORT_DESTROY_SINCE_VERSION 1
+/**
+ * @ingroup iface_wp_viewport
+ */
+#define WP_VIEWPORT_SET_SOURCE_SINCE_VERSION 1
+/**
+ * @ingroup iface_wp_viewport
+ */
+#define WP_VIEWPORT_SET_DESTINATION_SINCE_VERSION 1
+
+/** @ingroup iface_wp_viewport */
+static inline void
+wp_viewport_set_user_data(struct wp_viewport *wp_viewport, void *user_data)
+{
+	wl_proxy_set_user_data((struct wl_proxy *) wp_viewport, user_data);
+}
+
+/** @ingroup iface_wp_viewport */
+static inline void *
+wp_viewport_get_user_data(struct wp_viewport *wp_viewport)
+{
+	return wl_proxy_get_user_data((struct wl_proxy *) wp_viewport);
+}
+
+static inline uint32_t
+wp_viewport_get_version(struct wp_viewport *wp_viewport)
+{
+	return wl_proxy_get_version((struct wl_proxy *) wp_viewport);
+}
+
+/**
+ * @ingroup iface_wp_viewport
+ *
+ * The associated wl_surface's crop and scale state is removed.
+ * The change is applied on the next wl_surface.commit.
+ */
+static inline void
+wp_viewport_destroy(struct wp_viewport *wp_viewport)
+{
+	wl_proxy_marshal_flags((struct wl_proxy *) wp_viewport,
+			 WP_VIEWPORT_DESTROY, NULL, wl_proxy_get_version((struct wl_proxy *) wp_viewport), WL_MARSHAL_FLAG_DESTROY);
+}
+
+/**
+ * @ingroup iface_wp_viewport
+ *
+ * Set the source rectangle of the associated wl_surface. See
+ * wp_viewport for the description, and relation to the wl_buffer
+ * size.
+ *
+ * If all of x, y, width and height are -1.0, the source rectangle is
+ * unset instead. Any other set of values where width or height are zero
+ * or negative, or x or y are negative, raise the bad_value protocol
+ * error.
+ *
+ * The crop and scale state is double-buffered state, and will be
+ * applied on the next wl_surface.commit.
+ */
+static inline void
+wp_viewport_set_source(struct wp_viewport *wp_viewport, wl_fixed_t x, wl_fixed_t y, wl_fixed_t width, wl_fixed_t height)
+{
+	wl_proxy_marshal_flags((struct wl_proxy *) wp_viewport,
+			 WP_VIEWPORT_SET_SOURCE, NULL, wl_proxy_get_version((struct wl_proxy *) wp_viewport), 0, x, y, width, height);
+}
+
+/**
+ * @ingroup iface_wp_viewport
+ *
+ * Set the destination size of the associated wl_surface. See
+ * wp_viewport for the description, and relation to the wl_buffer
+ * size.
+ *
+ * If width is -1 and height is -1, the destination size is unset
+ * instead. Any other pair of values for width and height that
+ * contains zero or negative values raises the bad_value protocol
+ * error.
+ *
+ * The crop and scale state is double-buffered state, and will be
+ * applied on the next wl_surface.commit.
+ */
+static inline void
+wp_viewport_set_destination(struct wp_viewport *wp_viewport, int32_t width, int32_t height)
+{
+	wl_proxy_marshal_flags((struct wl_proxy *) wp_viewport,
+			 WP_VIEWPORT_SET_DESTINATION, NULL, wl_proxy_get_version((struct wl_proxy *) wp_viewport), 0, width, height);
+}
+
+#ifdef  __cplusplus
+}
+#endif
+
+#endif

include/wayland/virtual-keyboard-unstable-v1.h

@@ -0,0 +1,280 @@
+/* Generated by wayland-scanner 1.22.0 */
+
+#ifndef VIRTUAL_KEYBOARD_UNSTABLE_V1_CLIENT_PROTOCOL_H
+#define VIRTUAL_KEYBOARD_UNSTABLE_V1_CLIENT_PROTOCOL_H
+
+#include <stdint.h>
+#include <stddef.h>
+#include "wayland-client.h"
+
+#ifdef  __cplusplus
+extern "C" {
+#endif
+
+/**
+ * @page page_virtual_keyboard_unstable_v1 The virtual_keyboard_unstable_v1 protocol
+ * @section page_ifaces_virtual_keyboard_unstable_v1 Interfaces
+ * - @subpage page_iface_zwp_virtual_keyboard_v1 - virtual keyboard
+ * - @subpage page_iface_zwp_virtual_keyboard_manager_v1 - virtual keyboard manager
+ * @section page_copyright_virtual_keyboard_unstable_v1 Copyright
+ * <pre>
+ *
+ * Copyright © 2008-2011  Kristian Høgsberg
+ * Copyright © 2010-2013  Intel Corporation
+ * Copyright © 2012-2013  Collabora, Ltd.
+ * Copyright © 2018       Purism SPC
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice (including the next
+ * paragraph) shall be included in all copies or substantial portions of the
+ * Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
+ * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
+ * DEALINGS IN THE SOFTWARE.
+ * </pre>
+ */
+struct wl_seat;
+struct zwp_virtual_keyboard_manager_v1;
+struct zwp_virtual_keyboard_v1;
+
+#ifndef ZWP_VIRTUAL_KEYBOARD_V1_INTERFACE
+#define ZWP_VIRTUAL_KEYBOARD_V1_INTERFACE
+/**
+ * @page page_iface_zwp_virtual_keyboard_v1 zwp_virtual_keyboard_v1
+ * @section page_iface_zwp_virtual_keyboard_v1_desc Description
+ *
+ * The virtual keyboard provides an application with requests which emulate
+ * the behaviour of a physical keyboard.
+ *
+ * This interface can be used by clients on its own to provide raw input
+ * events, or it can accompany the input method protocol.
+ * @section page_iface_zwp_virtual_keyboard_v1_api API
+ * See @ref iface_zwp_virtual_keyboard_v1.
+ */
+/**
+ * @defgroup iface_zwp_virtual_keyboard_v1 The zwp_virtual_keyboard_v1 interface
+ *
+ * The virtual keyboard provides an application with requests which emulate
+ * the behaviour of a physical keyboard.
+ *
+ * This interface can be used by clients on its own to provide raw input
+ * events, or it can accompany the input method protocol.
+ */
+extern const struct wl_interface zwp_virtual_keyboard_v1_interface;
+#endif
+#ifndef ZWP_VIRTUAL_KEYBOARD_MANAGER_V1_INTERFACE
+#define ZWP_VIRTUAL_KEYBOARD_MANAGER_V1_INTERFACE
+/**
+ * @page page_iface_zwp_virtual_keyboard_manager_v1 zwp_virtual_keyboard_manager_v1
+ * @section page_iface_zwp_virtual_keyboard_manager_v1_desc Description
+ *
+ * A virtual keyboard manager allows an application to provide keyboard
+ * input events as if they came from a physical keyboard.
+ * @section page_iface_zwp_virtual_keyboard_manager_v1_api API
+ * See @ref iface_zwp_virtual_keyboard_manager_v1.
+ */
+/**
+ * @defgroup iface_zwp_virtual_keyboard_manager_v1 The zwp_virtual_keyboard_manager_v1 interface
+ *
+ * A virtual keyboard manager allows an application to provide keyboard
+ * input events as if they came from a physical keyboard.
+ */
+extern const struct wl_interface zwp_virtual_keyboard_manager_v1_interface;
+#endif
+
+#ifndef ZWP_VIRTUAL_KEYBOARD_V1_ERROR_ENUM
+#define ZWP_VIRTUAL_KEYBOARD_V1_ERROR_ENUM
+enum zwp_virtual_keyboard_v1_error {
+	/**
+	 * No keymap was set
+	 */
+	ZWP_VIRTUAL_KEYBOARD_V1_ERROR_NO_KEYMAP = 0,
+};
+#endif /* ZWP_VIRTUAL_KEYBOARD_V1_ERROR_ENUM */
+
+#define ZWP_VIRTUAL_KEYBOARD_V1_KEYMAP 0
+#define ZWP_VIRTUAL_KEYBOARD_V1_KEY 1
+#define ZWP_VIRTUAL_KEYBOARD_V1_MODIFIERS 2
+#define ZWP_VIRTUAL_KEYBOARD_V1_DESTROY 3
+
+
+/**
+ * @ingroup iface_zwp_virtual_keyboard_v1
+ */
+#define ZWP_VIRTUAL_KEYBOARD_V1_KEYMAP_SINCE_VERSION 1
+/**
+ * @ingroup iface_zwp_virtual_keyboard_v1
+ */
+#define ZWP_VIRTUAL_KEYBOARD_V1_KEY_SINCE_VERSION 1
+/**
+ * @ingroup iface_zwp_virtual_keyboard_v1
+ */
+#define ZWP_VIRTUAL_KEYBOARD_V1_MODIFIERS_SINCE_VERSION 1
+/**
+ * @ingroup iface_zwp_virtual_keyboard_v1
+ */
+#define ZWP_VIRTUAL_KEYBOARD_V1_DESTROY_SINCE_VERSION 1
+
+/** @ingroup iface_zwp_virtual_keyboard_v1 */
+static inline void
+zwp_virtual_keyboard_v1_set_user_data(struct zwp_virtual_keyboard_v1 *zwp_virtual_keyboard_v1, void *user_data)
+{
+	wl_proxy_set_user_data((struct wl_proxy *) zwp_virtual_keyboard_v1, user_data);
+}
+
+/** @ingroup iface_zwp_virtual_keyboard_v1 */
+static inline void *
+zwp_virtual_keyboard_v1_get_user_data(struct zwp_virtual_keyboard_v1 *zwp_virtual_keyboard_v1)
+{
+	return wl_proxy_get_user_data((struct wl_proxy *) zwp_virtual_keyboard_v1);
+}
+
+static inline uint32_t
+zwp_virtual_keyboard_v1_get_version(struct zwp_virtual_keyboard_v1 *zwp_virtual_keyboard_v1)
+{
+	return wl_proxy_get_version((struct wl_proxy *) zwp_virtual_keyboard_v1);
+}
+
+/**
+ * @ingroup iface_zwp_virtual_keyboard_v1
+ *
+ * Provide a file descriptor to the compositor which can be
+ * memory-mapped to provide a keyboard mapping description.
+ *
+ * Format carries a value from the keymap_format enumeration.
+ */
+static inline void
+zwp_virtual_keyboard_v1_keymap(struct zwp_virtual_keyboard_v1 *zwp_virtual_keyboard_v1, uint32_t format, int32_t fd, uint32_t size)
+{
+	wl_proxy_marshal_flags((struct wl_proxy *) zwp_virtual_keyboard_v1,
+			 ZWP_VIRTUAL_KEYBOARD_V1_KEYMAP, NULL, wl_proxy_get_version((struct wl_proxy *) zwp_virtual_keyboard_v1), 0, format, fd, size);
+}
+
+/**
+ * @ingroup iface_zwp_virtual_keyboard_v1
+ *
+ * A key was pressed or released.
+ * The time argument is a timestamp with millisecond granularity, with an
+ * undefined base. All requests regarding a single object must share the
+ * same clock.
+ *
+ * Keymap must be set before issuing this request.
+ *
+ * State carries a value from the key_state enumeration.
+ */
+static inline void
+zwp_virtual_keyboard_v1_key(struct zwp_virtual_keyboard_v1 *zwp_virtual_keyboard_v1, uint32_t time, uint32_t key, uint32_t state)
+{
+	wl_proxy_marshal_flags((struct wl_proxy *) zwp_virtual_keyboard_v1,
+			 ZWP_VIRTUAL_KEYBOARD_V1_KEY, NULL, wl_proxy_get_version((struct wl_proxy *) zwp_virtual_keyboard_v1), 0, time, key, state);
+}
+
+/**
+ * @ingroup iface_zwp_virtual_keyboard_v1
+ *
+ * Notifies the compositor that the modifier and/or group state has
+ * changed, and it should update state.
+ *
+ * The client should use wl_keyboard.modifiers event to synchronize its
+ * internal state with seat state.
+ *
+ * Keymap must be set before issuing this request.
+ */
+static inline void
+zwp_virtual_keyboard_v1_modifiers(struct zwp_virtual_keyboard_v1 *zwp_virtual_keyboard_v1, uint32_t mods_depressed, uint32_t mods_latched, uint32_t mods_locked, uint32_t group)
+{
+	wl_proxy_marshal_flags((struct wl_proxy *) zwp_virtual_keyboard_v1,
+			 ZWP_VIRTUAL_KEYBOARD_V1_MODIFIERS, NULL, wl_proxy_get_version((struct wl_proxy *) zwp_virtual_keyboard_v1), 0, mods_depressed, mods_latched, mods_locked, group);
+}
+
+/**
+ * @ingroup iface_zwp_virtual_keyboard_v1
+ */
+static inline void
+zwp_virtual_keyboard_v1_destroy(struct zwp_virtual_keyboard_v1 *zwp_virtual_keyboard_v1)
+{
+	wl_proxy_marshal_flags((struct wl_proxy *) zwp_virtual_keyboard_v1,
+			 ZWP_VIRTUAL_KEYBOARD_V1_DESTROY, NULL, wl_proxy_get_version((struct wl_proxy *) zwp_virtual_keyboard_v1), WL_MARSHAL_FLAG_DESTROY);
+}
+
+#ifndef ZWP_VIRTUAL_KEYBOARD_MANAGER_V1_ERROR_ENUM
+#define ZWP_VIRTUAL_KEYBOARD_MANAGER_V1_ERROR_ENUM
+enum zwp_virtual_keyboard_manager_v1_error {
+	/**
+	 * client not authorized to use the interface
+	 */
+	ZWP_VIRTUAL_KEYBOARD_MANAGER_V1_ERROR_UNAUTHORIZED = 0,
+};
+#endif /* ZWP_VIRTUAL_KEYBOARD_MANAGER_V1_ERROR_ENUM */
+
+#define ZWP_VIRTUAL_KEYBOARD_MANAGER_V1_CREATE_VIRTUAL_KEYBOARD 0
+
+
+/**
+ * @ingroup iface_zwp_virtual_keyboard_manager_v1
+ */
+#define ZWP_VIRTUAL_KEYBOARD_MANAGER_V1_CREATE_VIRTUAL_KEYBOARD_SINCE_VERSION 1
+
+/** @ingroup iface_zwp_virtual_keyboard_manager_v1 */
+static inline void
+zwp_virtual_keyboard_manager_v1_set_user_data(struct zwp_virtual_keyboard_manager_v1 *zwp_virtual_keyboard_manager_v1, void *user_data)
+{
+	wl_proxy_set_user_data((struct wl_proxy *) zwp_virtual_keyboard_manager_v1, user_data);
+}
+
+/** @ingroup iface_zwp_virtual_keyboard_manager_v1 */
+static inline void *
+zwp_virtual_keyboard_manager_v1_get_user_data(struct zwp_virtual_keyboard_manager_v1 *zwp_virtual_keyboard_manager_v1)
+{
+	return wl_proxy_get_user_data((struct wl_proxy *) zwp_virtual_keyboard_manager_v1);
+}
+
+static inline uint32_t
+zwp_virtual_keyboard_manager_v1_get_version(struct zwp_virtual_keyboard_manager_v1 *zwp_virtual_keyboard_manager_v1)
+{
+	return wl_proxy_get_version((struct wl_proxy *) zwp_virtual_keyboard_manager_v1);
+}
+
+/** @ingroup iface_zwp_virtual_keyboard_manager_v1 */
+static inline void
+zwp_virtual_keyboard_manager_v1_destroy(struct zwp_virtual_keyboard_manager_v1 *zwp_virtual_keyboard_manager_v1)
+{
+	wl_proxy_destroy((struct wl_proxy *) zwp_virtual_keyboard_manager_v1);
+}
+
+/**
+ * @ingroup iface_zwp_virtual_keyboard_manager_v1
+ *
+ * Creates a new virtual keyboard associated to a seat.
+ *
+ * If the compositor enables a keyboard to perform arbitrary actions, it
+ * should present an error when an untrusted client requests a new
+ * keyboard.
+ */
+static inline struct zwp_virtual_keyboard_v1 *
+zwp_virtual_keyboard_manager_v1_create_virtual_keyboard(struct zwp_virtual_keyboard_manager_v1 *zwp_virtual_keyboard_manager_v1, struct wl_seat *seat)
+{
+	struct wl_proxy *id;
+
+	id = wl_proxy_marshal_flags((struct wl_proxy *) zwp_virtual_keyboard_manager_v1,
+			 ZWP_VIRTUAL_KEYBOARD_MANAGER_V1_CREATE_VIRTUAL_KEYBOARD, &zwp_virtual_keyboard_v1_interface, wl_proxy_get_version((struct wl_proxy *) zwp_virtual_keyboard_manager_v1), 0, seat, NULL);
+
+	return (struct zwp_virtual_keyboard_v1 *) id;
+}
+
+#ifdef  __cplusplus
+}
+#endif
+
+#endif

include/wayland/wlr-layer-shell-unstable-v1.h

@@ -0,0 +1,706 @@
+/* Generated by wayland-scanner 1.22.0 */
+
+#ifndef WLR_LAYER_SHELL_UNSTABLE_V1_CLIENT_PROTOCOL_H
+#define WLR_LAYER_SHELL_UNSTABLE_V1_CLIENT_PROTOCOL_H
+
+#include <stdint.h>
+#include <stddef.h>
+#include "wayland-client.h"
+
+#ifdef  __cplusplus
+extern "C" {
+#endif
+
+/**
+ * @page page_wlr_layer_shell_unstable_v1 The wlr_layer_shell_unstable_v1 protocol
+ * @section page_ifaces_wlr_layer_shell_unstable_v1 Interfaces
+ * - @subpage page_iface_zwlr_layer_shell_v1 - create surfaces that are layers of the desktop
+ * - @subpage page_iface_zwlr_layer_surface_v1 - layer metadata interface
+ * @section page_copyright_wlr_layer_shell_unstable_v1 Copyright
+ * <pre>
+ *
+ * Copyright © 2017 Drew DeVault
+ *
+ * Permission to use, copy, modify, distribute, and sell this
+ * software and its documentation for any purpose is hereby granted
+ * without fee, provided that the above copyright notice appear in
+ * all copies and that both that copyright notice and this permission
+ * notice appear in supporting documentation, and that the name of
+ * the copyright holders not be used in advertising or publicity
+ * pertaining to distribution of the software without specific,
+ * written prior permission.  The copyright holders make no
+ * representations about the suitability of this software for any
+ * purpose.  It is provided "as is" without express or implied
+ * warranty.
+ *
+ * THE COPYRIGHT HOLDERS DISCLAIM ALL WARRANTIES WITH REGARD TO THIS
+ * SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND
+ * FITNESS, IN NO EVENT SHALL THE COPYRIGHT HOLDERS BE LIABLE FOR ANY
+ * SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN
+ * AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION,
+ * ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF
+ * THIS SOFTWARE.
+ * </pre>
+ */
+struct wl_output;
+struct wl_surface;
+struct xdg_popup;
+struct zwlr_layer_shell_v1;
+struct zwlr_layer_surface_v1;
+
+#ifndef ZWLR_LAYER_SHELL_V1_INTERFACE
+#define ZWLR_LAYER_SHELL_V1_INTERFACE
+/**
+ * @page page_iface_zwlr_layer_shell_v1 zwlr_layer_shell_v1
+ * @section page_iface_zwlr_layer_shell_v1_desc Description
+ *
+ * Clients can use this interface to assign the surface_layer role to
+ * wl_surfaces. Such surfaces are assigned to a "layer" of the output and
+ * rendered with a defined z-depth respective to each other. They may also be
+ * anchored to the edges and corners of a screen and specify input handling
+ * semantics. This interface should be suitable for the implementation of
+ * many desktop shell components, and a broad number of other applications
+ * that interact with the desktop.
+ * @section page_iface_zwlr_layer_shell_v1_api API
+ * See @ref iface_zwlr_layer_shell_v1.
+ */
+/**
+ * @defgroup iface_zwlr_layer_shell_v1 The zwlr_layer_shell_v1 interface
+ *
+ * Clients can use this interface to assign the surface_layer role to
+ * wl_surfaces. Such surfaces are assigned to a "layer" of the output and
+ * rendered with a defined z-depth respective to each other. They may also be
+ * anchored to the edges and corners of a screen and specify input handling
+ * semantics. This interface should be suitable for the implementation of
+ * many desktop shell components, and a broad number of other applications
+ * that interact with the desktop.
+ */
+extern const struct wl_interface zwlr_layer_shell_v1_interface;
+#endif
+#ifndef ZWLR_LAYER_SURFACE_V1_INTERFACE
+#define ZWLR_LAYER_SURFACE_V1_INTERFACE
+/**
+ * @page page_iface_zwlr_layer_surface_v1 zwlr_layer_surface_v1
+ * @section page_iface_zwlr_layer_surface_v1_desc Description
+ *
+ * An interface that may be implemented by a wl_surface, for surfaces that
+ * are designed to be rendered as a layer of a stacked desktop-like
+ * environment.
+ *
+ * Layer surface state (layer, size, anchor, exclusive zone,
+ * margin, interactivity) is double-buffered, and will be applied at the
+ * time wl_surface.commit of the corresponding wl_surface is called.
+ *
+ * Attaching a null buffer to a layer surface unmaps it.
+ *
+ * Unmapping a layer_surface means that the surface cannot be shown by the
+ * compositor until it is explicitly mapped again. The layer_surface
+ * returns to the state it had right after layer_shell.get_layer_surface.
+ * The client can re-map the surface by performing a commit without any
+ * buffer attached, waiting for a configure event and handling it as usual.
+ * @section page_iface_zwlr_layer_surface_v1_api API
+ * See @ref iface_zwlr_layer_surface_v1.
+ */
+/**
+ * @defgroup iface_zwlr_layer_surface_v1 The zwlr_layer_surface_v1 interface
+ *
+ * An interface that may be implemented by a wl_surface, for surfaces that
+ * are designed to be rendered as a layer of a stacked desktop-like
+ * environment.
+ *
+ * Layer surface state (layer, size, anchor, exclusive zone,
+ * margin, interactivity) is double-buffered, and will be applied at the
+ * time wl_surface.commit of the corresponding wl_surface is called.
+ *
+ * Attaching a null buffer to a layer surface unmaps it.
+ *
+ * Unmapping a layer_surface means that the surface cannot be shown by the
+ * compositor until it is explicitly mapped again. The layer_surface
+ * returns to the state it had right after layer_shell.get_layer_surface.
+ * The client can re-map the surface by performing a commit without any
+ * buffer attached, waiting for a configure event and handling it as usual.
+ */
+extern const struct wl_interface zwlr_layer_surface_v1_interface;
+#endif
+
+#ifndef ZWLR_LAYER_SHELL_V1_ERROR_ENUM
+#define ZWLR_LAYER_SHELL_V1_ERROR_ENUM
+enum zwlr_layer_shell_v1_error {
+	/**
+	 * wl_surface has another role
+	 */
+	ZWLR_LAYER_SHELL_V1_ERROR_ROLE = 0,
+	/**
+	 * layer value is invalid
+	 */
+	ZWLR_LAYER_SHELL_V1_ERROR_INVALID_LAYER = 1,
+	/**
+	 * wl_surface has a buffer attached or committed
+	 */
+	ZWLR_LAYER_SHELL_V1_ERROR_ALREADY_CONSTRUCTED = 2,
+};
+#endif /* ZWLR_LAYER_SHELL_V1_ERROR_ENUM */
+
+#ifndef ZWLR_LAYER_SHELL_V1_LAYER_ENUM
+#define ZWLR_LAYER_SHELL_V1_LAYER_ENUM
+/**
+ * @ingroup iface_zwlr_layer_shell_v1
+ * available layers for surfaces
+ *
+ * These values indicate which layers a surface can be rendered in. They
+ * are ordered by z depth, bottom-most first. Traditional shell surfaces
+ * will typically be rendered between the bottom and top layers.
+ * Fullscreen shell surfaces are typically rendered at the top layer.
+ * Multiple surfaces can share a single layer, and ordering within a
+ * single layer is undefined.
+ */
+enum zwlr_layer_shell_v1_layer {
+	ZWLR_LAYER_SHELL_V1_LAYER_BACKGROUND = 0,
+	ZWLR_LAYER_SHELL_V1_LAYER_BOTTOM = 1,
+	ZWLR_LAYER_SHELL_V1_LAYER_TOP = 2,
+	ZWLR_LAYER_SHELL_V1_LAYER_OVERLAY = 3,
+};
+#endif /* ZWLR_LAYER_SHELL_V1_LAYER_ENUM */
+
+#define ZWLR_LAYER_SHELL_V1_GET_LAYER_SURFACE 0
+#define ZWLR_LAYER_SHELL_V1_DESTROY 1
+
+
+/**
+ * @ingroup iface_zwlr_layer_shell_v1
+ */
+#define ZWLR_LAYER_SHELL_V1_GET_LAYER_SURFACE_SINCE_VERSION 1
+/**
+ * @ingroup iface_zwlr_layer_shell_v1
+ */
+#define ZWLR_LAYER_SHELL_V1_DESTROY_SINCE_VERSION 3
+
+/** @ingroup iface_zwlr_layer_shell_v1 */
+static inline void
+zwlr_layer_shell_v1_set_user_data(struct zwlr_layer_shell_v1 *zwlr_layer_shell_v1, void *user_data)
+{
+	wl_proxy_set_user_data((struct wl_proxy *) zwlr_layer_shell_v1, user_data);
+}
+
+/** @ingroup iface_zwlr_layer_shell_v1 */
+static inline void *
+zwlr_layer_shell_v1_get_user_data(struct zwlr_layer_shell_v1 *zwlr_layer_shell_v1)
+{
+	return wl_proxy_get_user_data((struct wl_proxy *) zwlr_layer_shell_v1);
+}
+
+static inline uint32_t
+zwlr_layer_shell_v1_get_version(struct zwlr_layer_shell_v1 *zwlr_layer_shell_v1)
+{
+	return wl_proxy_get_version((struct wl_proxy *) zwlr_layer_shell_v1);
+}
+
+/**
+ * @ingroup iface_zwlr_layer_shell_v1
+ *
+ * Create a layer surface for an existing surface. This assigns the role of
+ * layer_surface, or raises a protocol error if another role is already
+ * assigned.
+ *
+ * Creating a layer surface from a wl_surface which has a buffer attached
+ * or committed is a client error, and any attempts by a client to attach
+ * or manipulate a buffer prior to the first layer_surface.configure call
+ * must also be treated as errors.
+ *
+ * After creating a layer_surface object and setting it up, the client
+ * must perform an initial commit without any buffer attached.
+ * The compositor will reply with a layer_surface.configure event.
+ * The client must acknowledge it and is then allowed to attach a buffer
+ * to map the surface.
+ *
+ * You may pass NULL for output to allow the compositor to decide which
+ * output to use. Generally this will be the one that the user most
+ * recently interacted with.
+ *
+ * Clients can specify a namespace that defines the purpose of the layer
+ * surface.
+ */
+static inline struct zwlr_layer_surface_v1 *
+zwlr_layer_shell_v1_get_layer_surface(struct zwlr_layer_shell_v1 *zwlr_layer_shell_v1, struct wl_surface *surface, struct wl_output *output, uint32_t layer, const char *namespace)
+{
+	struct wl_proxy *id;
+
+	id = wl_proxy_marshal_flags((struct wl_proxy *) zwlr_layer_shell_v1,
+			 ZWLR_LAYER_SHELL_V1_GET_LAYER_SURFACE, &zwlr_layer_surface_v1_interface, wl_proxy_get_version((struct wl_proxy *) zwlr_layer_shell_v1), 0, NULL, surface, output, layer, namespace);
+
+	return (struct zwlr_layer_surface_v1 *) id;
+}
+
+/**
+ * @ingroup iface_zwlr_layer_shell_v1
+ *
+ * This request indicates that the client will not use the layer_shell
+ * object any more. Objects that have been created through this instance
+ * are not affected.
+ */
+static inline void
+zwlr_layer_shell_v1_destroy(struct zwlr_layer_shell_v1 *zwlr_layer_shell_v1)
+{
+	wl_proxy_marshal_flags((struct wl_proxy *) zwlr_layer_shell_v1,
+			 ZWLR_LAYER_SHELL_V1_DESTROY, NULL, wl_proxy_get_version((struct wl_proxy *) zwlr_layer_shell_v1), WL_MARSHAL_FLAG_DESTROY);
+}
+
+#ifndef ZWLR_LAYER_SURFACE_V1_KEYBOARD_INTERACTIVITY_ENUM
+#define ZWLR_LAYER_SURFACE_V1_KEYBOARD_INTERACTIVITY_ENUM
+/**
+ * @ingroup iface_zwlr_layer_surface_v1
+ * types of keyboard interaction possible for a layer shell surface
+ *
+ * Types of keyboard interaction possible for layer shell surfaces. The
+ * rationale for this is twofold: (1) some applications are not interested
+ * in keyboard events and not allowing them to be focused can improve the
+ * desktop experience; (2) some applications will want to take exclusive
+ * keyboard focus.
+ */
+enum zwlr_layer_surface_v1_keyboard_interactivity {
+	/**
+	 * no keyboard focus is possible
+	 *
+	 * This value indicates that this surface is not interested in
+	 * keyboard events and the compositor should never assign it the
+	 * keyboard focus.
+	 *
+	 * This is the default value, set for newly created layer shell
+	 * surfaces.
+	 *
+	 * This is useful for e.g. desktop widgets that display information
+	 * or only have interaction with non-keyboard input devices.
+	 */
+	ZWLR_LAYER_SURFACE_V1_KEYBOARD_INTERACTIVITY_NONE = 0,
+	/**
+	 * request exclusive keyboard focus
+	 *
+	 * Request exclusive keyboard focus if this surface is above the
+	 * shell surface layer.
+	 *
+	 * For the top and overlay layers, the seat will always give
+	 * exclusive keyboard focus to the top-most layer which has
+	 * keyboard interactivity set to exclusive. If this layer contains
+	 * multiple surfaces with keyboard interactivity set to exclusive,
+	 * the compositor determines the one receiving keyboard events in
+	 * an implementation- defined manner. In this case, no guarantee is
+	 * made when this surface will receive keyboard focus (if ever).
+	 *
+	 * For the bottom and background layers, the compositor is allowed
+	 * to use normal focus semantics.
+	 *
+	 * This setting is mainly intended for applications that need to
+	 * ensure they receive all keyboard events, such as a lock screen
+	 * or a password prompt.
+	 */
+	ZWLR_LAYER_SURFACE_V1_KEYBOARD_INTERACTIVITY_EXCLUSIVE = 1,
+	/**
+	 * request regular keyboard focus semantics
+	 *
+	 * This requests the compositor to allow this surface to be
+	 * focused and unfocused by the user in an implementation-defined
+	 * manner. The user should be able to unfocus this surface even
+	 * regardless of the layer it is on.
+	 *
+	 * Typically, the compositor will want to use its normal mechanism
+	 * to manage keyboard focus between layer shell surfaces with this
+	 * setting and regular toplevels on the desktop layer (e.g. click
+	 * to focus). Nevertheless, it is possible for a compositor to
+	 * require a special interaction to focus or unfocus layer shell
+	 * surfaces (e.g. requiring a click even if focus follows the mouse
+	 * normally, or providing a keybinding to switch focus between
+	 * layers).
+	 *
+	 * This setting is mainly intended for desktop shell components
+	 * (e.g. panels) that allow keyboard interaction. Using this option
+	 * can allow implementing a desktop shell that can be fully usable
+	 * without the mouse.
+	 * @since 4
+	 */
+	ZWLR_LAYER_SURFACE_V1_KEYBOARD_INTERACTIVITY_ON_DEMAND = 2,
+};
+/**
+ * @ingroup iface_zwlr_layer_surface_v1
+ */
+#define ZWLR_LAYER_SURFACE_V1_KEYBOARD_INTERACTIVITY_ON_DEMAND_SINCE_VERSION 4
+#endif /* ZWLR_LAYER_SURFACE_V1_KEYBOARD_INTERACTIVITY_ENUM */
+
+#ifndef ZWLR_LAYER_SURFACE_V1_ERROR_ENUM
+#define ZWLR_LAYER_SURFACE_V1_ERROR_ENUM
+enum zwlr_layer_surface_v1_error {
+	/**
+	 * provided surface state is invalid
+	 */
+	ZWLR_LAYER_SURFACE_V1_ERROR_INVALID_SURFACE_STATE = 0,
+	/**
+	 * size is invalid
+	 */
+	ZWLR_LAYER_SURFACE_V1_ERROR_INVALID_SIZE = 1,
+	/**
+	 * anchor bitfield is invalid
+	 */
+	ZWLR_LAYER_SURFACE_V1_ERROR_INVALID_ANCHOR = 2,
+	/**
+	 * keyboard interactivity is invalid
+	 */
+	ZWLR_LAYER_SURFACE_V1_ERROR_INVALID_KEYBOARD_INTERACTIVITY = 3,
+};
+#endif /* ZWLR_LAYER_SURFACE_V1_ERROR_ENUM */
+
+#ifndef ZWLR_LAYER_SURFACE_V1_ANCHOR_ENUM
+#define ZWLR_LAYER_SURFACE_V1_ANCHOR_ENUM
+enum zwlr_layer_surface_v1_anchor {
+	/**
+	 * the top edge of the anchor rectangle
+	 */
+	ZWLR_LAYER_SURFACE_V1_ANCHOR_TOP = 1,
+	/**
+	 * the bottom edge of the anchor rectangle
+	 */
+	ZWLR_LAYER_SURFACE_V1_ANCHOR_BOTTOM = 2,
+	/**
+	 * the left edge of the anchor rectangle
+	 */
+	ZWLR_LAYER_SURFACE_V1_ANCHOR_LEFT = 4,
+	/**
+	 * the right edge of the anchor rectangle
+	 */
+	ZWLR_LAYER_SURFACE_V1_ANCHOR_RIGHT = 8,
+};
+#endif /* ZWLR_LAYER_SURFACE_V1_ANCHOR_ENUM */
+
+/**
+ * @ingroup iface_zwlr_layer_surface_v1
+ * @struct zwlr_layer_surface_v1_listener
+ */
+struct zwlr_layer_surface_v1_listener {
+	/**
+	 * suggest a surface change
+	 *
+	 * The configure event asks the client to resize its surface.
+	 *
+	 * Clients should arrange their surface for the new states, and
+	 * then send an ack_configure request with the serial sent in this
+	 * configure event at some point before committing the new surface.
+	 *
+	 * The client is free to dismiss all but the last configure event
+	 * it received.
+	 *
+	 * The width and height arguments specify the size of the window in
+	 * surface-local coordinates.
+	 *
+	 * The size is a hint, in the sense that the client is free to
+	 * ignore it if it doesn't resize, pick a smaller size (to satisfy
+	 * aspect ratio or resize in steps of NxM pixels). If the client
+	 * picks a smaller size and is anchored to two opposite anchors
+	 * (e.g. 'top' and 'bottom'), the surface will be centered on this
+	 * axis.
+	 *
+	 * If the width or height arguments are zero, it means the client
+	 * should decide its own window dimension.
+	 */
+	void (*configure)(void *data,
+			  struct zwlr_layer_surface_v1 *zwlr_layer_surface_v1,
+			  uint32_t serial,
+			  uint32_t width,
+			  uint32_t height);
+	/**
+	 * surface should be closed
+	 *
+	 * The closed event is sent by the compositor when the surface
+	 * will no longer be shown. The output may have been destroyed or
+	 * the user may have asked for it to be removed. Further changes to
+	 * the surface will be ignored. The client should destroy the
+	 * resource after receiving this event, and create a new surface if
+	 * they so choose.
+	 */
+	void (*closed)(void *data,
+		       struct zwlr_layer_surface_v1 *zwlr_layer_surface_v1);
+};
+
+/**
+ * @ingroup iface_zwlr_layer_surface_v1
+ */
+static inline int
+zwlr_layer_surface_v1_add_listener(struct zwlr_layer_surface_v1 *zwlr_layer_surface_v1,
+				   const struct zwlr_layer_surface_v1_listener *listener, void *data)
+{
+	return wl_proxy_add_listener((struct wl_proxy *) zwlr_layer_surface_v1,
+				     (void (**)(void)) listener, data);
+}
+
+#define ZWLR_LAYER_SURFACE_V1_SET_SIZE 0
+#define ZWLR_LAYER_SURFACE_V1_SET_ANCHOR 1
+#define ZWLR_LAYER_SURFACE_V1_SET_EXCLUSIVE_ZONE 2
+#define ZWLR_LAYER_SURFACE_V1_SET_MARGIN 3
+#define ZWLR_LAYER_SURFACE_V1_SET_KEYBOARD_INTERACTIVITY 4
+#define ZWLR_LAYER_SURFACE_V1_GET_POPUP 5
+#define ZWLR_LAYER_SURFACE_V1_ACK_CONFIGURE 6
+#define ZWLR_LAYER_SURFACE_V1_DESTROY 7
+#define ZWLR_LAYER_SURFACE_V1_SET_LAYER 8
+
+/**
+ * @ingroup iface_zwlr_layer_surface_v1
+ */
+#define ZWLR_LAYER_SURFACE_V1_CONFIGURE_SINCE_VERSION 1
+/**
+ * @ingroup iface_zwlr_layer_surface_v1
+ */
+#define ZWLR_LAYER_SURFACE_V1_CLOSED_SINCE_VERSION 1
+
+/**
+ * @ingroup iface_zwlr_layer_surface_v1
+ */
+#define ZWLR_LAYER_SURFACE_V1_SET_SIZE_SINCE_VERSION 1
+/**
+ * @ingroup iface_zwlr_layer_surface_v1
+ */
+#define ZWLR_LAYER_SURFACE_V1_SET_ANCHOR_SINCE_VERSION 1
+/**
+ * @ingroup iface_zwlr_layer_surface_v1
+ */
+#define ZWLR_LAYER_SURFACE_V1_SET_EXCLUSIVE_ZONE_SINCE_VERSION 1
+/**
+ * @ingroup iface_zwlr_layer_surface_v1
+ */
+#define ZWLR_LAYER_SURFACE_V1_SET_MARGIN_SINCE_VERSION 1
+/**
+ * @ingroup iface_zwlr_layer_surface_v1
+ */
+#define ZWLR_LAYER_SURFACE_V1_SET_KEYBOARD_INTERACTIVITY_SINCE_VERSION 1
+/**
+ * @ingroup iface_zwlr_layer_surface_v1
+ */
+#define ZWLR_LAYER_SURFACE_V1_GET_POPUP_SINCE_VERSION 1
+/**
+ * @ingroup iface_zwlr_layer_surface_v1
+ */
+#define ZWLR_LAYER_SURFACE_V1_ACK_CONFIGURE_SINCE_VERSION 1
+/**
+ * @ingroup iface_zwlr_layer_surface_v1
+ */
+#define ZWLR_LAYER_SURFACE_V1_DESTROY_SINCE_VERSION 1
+/**
+ * @ingroup iface_zwlr_layer_surface_v1
+ */
+#define ZWLR_LAYER_SURFACE_V1_SET_LAYER_SINCE_VERSION 2
+
+/** @ingroup iface_zwlr_layer_surface_v1 */
+static inline void
+zwlr_layer_surface_v1_set_user_data(struct zwlr_layer_surface_v1 *zwlr_layer_surface_v1, void *user_data)
+{
+	wl_proxy_set_user_data((struct wl_proxy *) zwlr_layer_surface_v1, user_data);
+}
+
+/** @ingroup iface_zwlr_layer_surface_v1 */
+static inline void *
+zwlr_layer_surface_v1_get_user_data(struct zwlr_layer_surface_v1 *zwlr_layer_surface_v1)
+{
+	return wl_proxy_get_user_data((struct wl_proxy *) zwlr_layer_surface_v1);
+}
+
+static inline uint32_t
+zwlr_layer_surface_v1_get_version(struct zwlr_layer_surface_v1 *zwlr_layer_surface_v1)
+{
+	return wl_proxy_get_version((struct wl_proxy *) zwlr_layer_surface_v1);
+}
+
+/**
+ * @ingroup iface_zwlr_layer_surface_v1
+ *
+ * Sets the size of the surface in surface-local coordinates. The
+ * compositor will display the surface centered with respect to its
+ * anchors.
+ *
+ * If you pass 0 for either value, the compositor will assign it and
+ * inform you of the assignment in the configure event. You must set your
+ * anchor to opposite edges in the dimensions you omit; not doing so is a
+ * protocol error. Both values are 0 by default.
+ *
+ * Size is double-buffered, see wl_surface.commit.
+ */
+static inline void
+zwlr_layer_surface_v1_set_size(struct zwlr_layer_surface_v1 *zwlr_layer_surface_v1, uint32_t width, uint32_t height)
+{
+	wl_proxy_marshal_flags((struct wl_proxy *) zwlr_layer_surface_v1,
+			 ZWLR_LAYER_SURFACE_V1_SET_SIZE, NULL, wl_proxy_get_version((struct wl_proxy *) zwlr_layer_surface_v1), 0, width, height);
+}
+
+/**
+ * @ingroup iface_zwlr_layer_surface_v1
+ *
+ * Requests that the compositor anchor the surface to the specified edges
+ * and corners. If two orthogonal edges are specified (e.g. 'top' and
+ * 'left'), then the anchor point will be the intersection of the edges
+ * (e.g. the top left corner of the output); otherwise the anchor point
+ * will be centered on that edge, or in the center if none is specified.
+ *
+ * Anchor is double-buffered, see wl_surface.commit.
+ */
+static inline void
+zwlr_layer_surface_v1_set_anchor(struct zwlr_layer_surface_v1 *zwlr_layer_surface_v1, uint32_t anchor)
+{
+	wl_proxy_marshal_flags((struct wl_proxy *) zwlr_layer_surface_v1,
+			 ZWLR_LAYER_SURFACE_V1_SET_ANCHOR, NULL, wl_proxy_get_version((struct wl_proxy *) zwlr_layer_surface_v1), 0, anchor);
+}
+
+/**
+ * @ingroup iface_zwlr_layer_surface_v1
+ *
+ * Requests that the compositor avoids occluding an area with other
+ * surfaces. The compositor's use of this information is
+ * implementation-dependent - do not assume that this region will not
+ * actually be occluded.
+ *
+ * A positive value is only meaningful if the surface is anchored to one
+ * edge or an edge and both perpendicular edges. If the surface is not
+ * anchored, anchored to only two perpendicular edges (a corner), anchored
+ * to only two parallel edges or anchored to all edges, a positive value
+ * will be treated the same as zero.
+ *
+ * A positive zone is the distance from the edge in surface-local
+ * coordinates to consider exclusive.
+ *
+ * Surfaces that do not wish to have an exclusive zone may instead specify
+ * how they should interact with surfaces that do. If set to zero, the
+ * surface indicates that it would like to be moved to avoid occluding
+ * surfaces with a positive exclusive zone. If set to -1, the surface
+ * indicates that it would not like to be moved to accommodate for other
+ * surfaces, and the compositor should extend it all the way to the edges
+ * it is anchored to.
+ *
+ * For example, a panel might set its exclusive zone to 10, so that
+ * maximized shell surfaces are not shown on top of it. A notification
+ * might set its exclusive zone to 0, so that it is moved to avoid
+ * occluding the panel, but shell surfaces are shown underneath it. A
+ * wallpaper or lock screen might set their exclusive zone to -1, so that
+ * they stretch below or over the panel.
+ *
+ * The default value is 0.
+ *
+ * Exclusive zone is double-buffered, see wl_surface.commit.
+ */
+static inline void
+zwlr_layer_surface_v1_set_exclusive_zone(struct zwlr_layer_surface_v1 *zwlr_layer_surface_v1, int32_t zone)
+{
+	wl_proxy_marshal_flags((struct wl_proxy *) zwlr_layer_surface_v1,
+			 ZWLR_LAYER_SURFACE_V1_SET_EXCLUSIVE_ZONE, NULL, wl_proxy_get_version((struct wl_proxy *) zwlr_layer_surface_v1), 0, zone);
+}
+
+/**
+ * @ingroup iface_zwlr_layer_surface_v1
+ *
+ * Requests that the surface be placed some distance away from the anchor
+ * point on the output, in surface-local coordinates. Setting this value
+ * for edges you are not anchored to has no effect.
+ *
+ * The exclusive zone includes the margin.
+ *
+ * Margin is double-buffered, see wl_surface.commit.
+ */
+static inline void
+zwlr_layer_surface_v1_set_margin(struct zwlr_layer_surface_v1 *zwlr_layer_surface_v1, int32_t top, int32_t right, int32_t bottom, int32_t left)
+{
+	wl_proxy_marshal_flags((struct wl_proxy *) zwlr_layer_surface_v1,
+			 ZWLR_LAYER_SURFACE_V1_SET_MARGIN, NULL, wl_proxy_get_version((struct wl_proxy *) zwlr_layer_surface_v1), 0, top, right, bottom, left);
+}
+
+/**
+ * @ingroup iface_zwlr_layer_surface_v1
+ *
+ * Set how keyboard events are delivered to this surface. By default,
+ * layer shell surfaces do not receive keyboard events; this request can
+ * be used to change this.
+ *
+ * This setting is inherited by child surfaces set by the get_popup
+ * request.
+ *
+ * Layer surfaces receive pointer, touch, and tablet events normally. If
+ * you do not want to receive them, set the input region on your surface
+ * to an empty region.
+ *
+ * Keyboard interactivity is double-buffered, see wl_surface.commit.
+ */
+static inline void
+zwlr_layer_surface_v1_set_keyboard_interactivity(struct zwlr_layer_surface_v1 *zwlr_layer_surface_v1, uint32_t keyboard_interactivity)
+{
+	wl_proxy_marshal_flags((struct wl_proxy *) zwlr_layer_surface_v1,
+			 ZWLR_LAYER_SURFACE_V1_SET_KEYBOARD_INTERACTIVITY, NULL, wl_proxy_get_version((struct wl_proxy *) zwlr_layer_surface_v1), 0, keyboard_interactivity);
+}
+
+/**
+ * @ingroup iface_zwlr_layer_surface_v1
+ *
+ * This assigns an xdg_popup's parent to this layer_surface.  This popup
+ * should have been created via xdg_surface::get_popup with the parent set
+ * to NULL, and this request must be invoked before committing the popup's
+ * initial state.
+ *
+ * See the documentation of xdg_popup for more details about what an
+ * xdg_popup is and how it is used.
+ */
+static inline void
+zwlr_layer_surface_v1_get_popup(struct zwlr_layer_surface_v1 *zwlr_layer_surface_v1, struct xdg_popup *popup)
+{
+	wl_proxy_marshal_flags((struct wl_proxy *) zwlr_layer_surface_v1,
+			 ZWLR_LAYER_SURFACE_V1_GET_POPUP, NULL, wl_proxy_get_version((struct wl_proxy *) zwlr_layer_surface_v1), 0, popup);
+}
+
+/**
+ * @ingroup iface_zwlr_layer_surface_v1
+ *
+ * When a configure event is received, if a client commits the
+ * surface in response to the configure event, then the client
+ * must make an ack_configure request sometime before the commit
+ * request, passing along the serial of the configure event.
+ *
+ * If the client receives multiple configure events before it
+ * can respond to one, it only has to ack the last configure event.
+ *
+ * A client is not required to commit immediately after sending
+ * an ack_configure request - it may even ack_configure several times
+ * before its next surface commit.
+ *
+ * A client may send multiple ack_configure requests before committing, but
+ * only the last request sent before a commit indicates which configure
+ * event the client really is responding to.
+ */
+static inline void
+zwlr_layer_surface_v1_ack_configure(struct zwlr_layer_surface_v1 *zwlr_layer_surface_v1, uint32_t serial)
+{
+	wl_proxy_marshal_flags((struct wl_proxy *) zwlr_layer_surface_v1,
+			 ZWLR_LAYER_SURFACE_V1_ACK_CONFIGURE, NULL, wl_proxy_get_version((struct wl_proxy *) zwlr_layer_surface_v1), 0, serial);
+}
+
+/**
+ * @ingroup iface_zwlr_layer_surface_v1
+ *
+ * This request destroys the layer surface.
+ */
+static inline void
+zwlr_layer_surface_v1_destroy(struct zwlr_layer_surface_v1 *zwlr_layer_surface_v1)
+{
+	wl_proxy_marshal_flags((struct wl_proxy *) zwlr_layer_surface_v1,
+			 ZWLR_LAYER_SURFACE_V1_DESTROY, NULL, wl_proxy_get_version((struct wl_proxy *) zwlr_layer_surface_v1), WL_MARSHAL_FLAG_DESTROY);
+}
+
+/**
+ * @ingroup iface_zwlr_layer_surface_v1
+ *
+ * Change the layer that the surface is rendered on.
+ *
+ * Layer is double-buffered, see wl_surface.commit.
+ */
+static inline void
+zwlr_layer_surface_v1_set_layer(struct zwlr_layer_surface_v1 *zwlr_layer_surface_v1, uint32_t layer)
+{
+	wl_proxy_marshal_flags((struct wl_proxy *) zwlr_layer_surface_v1,
+			 ZWLR_LAYER_SURFACE_V1_SET_LAYER, NULL, wl_proxy_get_version((struct wl_proxy *) zwlr_layer_surface_v1), 0, layer);
+}
+
+#ifdef  __cplusplus
+}
+#endif
+
+#endif

input.c

@@ -0,0 +1,228 @@
+// SPDX-License-Identifier: GPL-3.0-only
+/*
+ * Copyright (c) 2024, Richard Acayan. All rights reserved.
+ */
+
+#include <errno.h>
+#include <math.h>
+#include <stdbool.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <time.h>
+#include <xkbcommon/xkbcommon.h>
+
+#include "graphics.h"
+#include "input.h"
+#include "layout.h"
+#include "modifier.h"
+#include "ufkbd.h"
+
+// Simple function to add nanoseconds to a time struct.
+static inline void time_add(struct timespec *time, long ns)
+{
+	time->tv_nsec += ns;
+
+	if (time->tv_nsec >= 1000000000) {
+		time->tv_sec += time->tv_nsec / 1000000000;
+		time->tv_nsec = time->tv_nsec % 1000000000;
+	}
+}
+
+static enum ufkbd_part part_calc(struct ufkbd_ctx *ctx,
+				 struct ufkbd_key *key,
+				 int x1, int y1, int x2, int y2)
+{
+	double angle;
+	int dx, dy;
+	int r_square;
+	int idx;
+
+	dx = x2 - x1;
+	dy = y2 - y1;
+
+	r_square = dx * dx + dy * dy;
+
+	if (r_square < ctx->dist_squared)
+		return UFKBD_PART_CENTER;
+
+	angle = atan2(dy, dx);
+	if (angle < 0)
+		angle += M_PI * 2;
+
+	idx = floor(angle * 8 / M_PI);
+
+	return key->lut[idx];
+}
+
+int ufkbd_input_press(struct ufkbd_ctx *ctx, int id)
+{
+	struct ufkbd_press *press;
+	int x1, y1, x2, y2;
+	int ret;
+
+	if (id >= UFKBD_PRESS_MAX)
+		return -EINVAL;
+
+	press = &ctx->presses[id];
+
+	// Only reset the press if it is new.
+	if (press->key == NULL) {
+		press->x1 = press->x2;
+		press->y1 = press->y2;
+	}
+
+	// Failure to find a key results in ignoring the press.
+	press->key = ufkbd_layout_search(ctx->layout, press->x1, press->y1,
+					 &x1, &y1, &x2, &y2);
+
+	press->part = UFKBD_PART_CENTER;
+
+	if (press->key != NULL) {
+		ufkbd_modifier_press(ctx, press);
+
+		press->key->presses[press->part]++;
+		ctx->n_presses++;
+
+		press->xl = x1;
+		press->yt = y1;
+		press->xr = x2;
+		press->yb = y2;
+
+		ufkbd_graphics_draw_key(ctx, press->key, x1, y1, x2, y2);
+	}
+
+	// The keypress may function partially if this fails.
+	ret = clock_gettime(CLOCK_REALTIME, &press->repeat);
+	if (ret == -1)
+		return 0;
+	time_add(&press->repeat, ctx->repeat_delay_ns);
+
+	return 0;
+}
+
+int ufkbd_input_position(struct ufkbd_ctx *ctx, int id, int x, int y)
+{
+	struct ufkbd_press *press;
+	enum ufkbd_part part;
+
+	if (id >= UFKBD_PRESS_MAX)
+		return -EINVAL;
+
+	press = &ctx->presses[id];
+
+	press->x2 = x;
+	press->y2 = y;
+
+	// We only want to do this if a valid key is being pressed.
+	if (press->key != NULL) {
+		part = part_calc(ctx, press->key,
+				 press->x1, press->y1,
+				 press->x2, press->y2);
+
+		if (press->part != part) {
+			press->key->presses[press->part]--;
+			press->key->presses[part]++;
+
+			ufkbd_graphics_draw_key(ctx, press->key,
+						press->xl, press->yt,
+						press->xr, press->yb);
+
+			ufkbd_modifier_cancel(ctx, press);
+			press->part = part;
+			ufkbd_modifier_press(ctx, press);
+		}
+	}
+
+	return 0;
+}
+
+int ufkbd_input_release(struct ufkbd_ctx *ctx, int id)
+{
+	struct ufkbd_press *press;
+	int part, code;
+	int ret = 0;
+
+	if (ctx->drv->send_key == NULL)
+		return -ENOTSUP;
+
+	if (ctx->presses[id].part >= UFKBD_PART_MAX)
+		return -EINVAL;
+
+	press = &ctx->presses[id];
+
+	if (press->key == NULL)
+		return 0;
+
+	part = press->part;
+	code = press->key->keyids[part];
+
+	/*
+	 * If the key is a modifier, a state change is needed, and the key
+	 * should only be sent to the driver when the modifier is released.
+	 * Otherwise, the key should be sent to the driver and any latched
+	 * modifiers should be released.
+	 */
+	if (ufkbd_is_modifier(press)) {
+		ufkbd_modifier_release(ctx, press);
+	} else if (code != -1) {
+		ret = ctx->drv->send_key(ctx->drv_data, code, false);
+		ufkbd_modifier_unlatch_all(ctx);
+	}
+
+	press->key->presses[part]--;
+	ctx->n_presses--;
+
+	ufkbd_graphics_draw_key(ctx, press->key,
+				press->xl, press->yt,
+				press->xr, press->yb);
+
+	press->key = NULL;
+
+	return ret;
+}
+
+int ufkbd_input_repeat(struct ufkbd_ctx *ctx, int id)
+{
+	struct ufkbd_press *press;
+	enum ufkbd_part part;
+	int code;
+
+	press = &ctx->presses[id];
+
+	// Modifier keys are not repeated.
+	if (ufkbd_is_modifier(press))
+		return 0;
+
+	time_add(&press->repeat, ctx->repeat_interval_ns);
+
+	part = press->part;
+	code = press->key->keyids[part];
+
+	return ctx->drv->send_key(ctx->drv_data, code, true);
+}
+
+int ufkbd_input_repeat_held(struct ufkbd_ctx *ctx)
+{
+	struct ufkbd_press *press;
+	struct timespec time;
+	size_t i;
+	int ret;
+
+	ret = clock_gettime(CLOCK_REALTIME, &time);
+	if (ret == -1)
+		return 0;
+
+	for (i = 0; i < UFKBD_PRESS_MAX; i++) {
+		press = &ctx->presses[i];
+		if (press->key == NULL)
+			continue;
+
+		if (time.tv_sec > press->repeat.tv_sec
+		 || (time.tv_sec == press->repeat.tv_sec
+		  && time.tv_nsec > press->repeat.tv_nsec)) {
+			ufkbd_input_repeat(ctx, i);
+		}
+	}
+
+	return 0;
+}

keymap.c

@@ -0,0 +1,170 @@
+// SPDX-License-Identifier: GPL-3.0-only
+/*
+ * XKB keymap manager.
+ *
+ * Copyright (c) 2024, Richard Acayan. All rights reserved.
+ */
+
+#include <ctype.h>
+#include <fcntl.h>
+#include <stddef.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <unistd.h>
+#include <xkbcommon/xkbcommon.h>
+#include <xkbcommon/xkbcommon-keysyms.h>
+
+#include "keymap.h"
+#include "layout.h"
+#include "ufkbd.h"
+
+static int write_keysym(int fd, xkb_keysym_t sym)
+{
+	char *name;
+	int len, ret;
+
+	len = xkb_keysym_get_name(sym, NULL, 0);
+	if (len == -1)
+		return len;
+
+	name = malloc((size_t) len + 1);
+	if (name == NULL)
+		return -1;
+
+	xkb_keysym_get_name(sym, name, (size_t) len + 1);
+
+	ret = dprintf(fd, "%s", name);
+
+	free(name);
+	return ret;
+}
+
+static int maybe_write_modmap(int fd, int keyid, xkb_keysym_t sym)
+{
+	if (sym == XKB_KEY_Shift_L || sym == XKB_KEY_Shift_R)
+		return dprintf(fd, "    modifier_map Shift { <I%03d> };\n",
+			       keyid);
+	else if (sym == XKB_KEY_Control_L || sym == XKB_KEY_Control_R)
+		return dprintf(fd, "    modifier_map Control { <I%03d> };\n",
+			       keyid);
+	else if (sym == XKB_KEY_Alt_L || sym == XKB_KEY_Alt_R)
+		return dprintf(fd, "    modifier_map Mod1 { <I%03d> };\n",
+			       keyid);
+
+	return 0;
+}
+
+int ufkbd_keymap_add_key(struct ufkbd_keymap *keymap, xkb_keysym_t keysym)
+{
+	xkb_keysym_t upper;
+	int len;
+	int keyid;
+
+	keyid = keymap->count;
+	if (keyid >= 256)
+		return -1;
+
+	upper = xkb_keysym_to_upper(keysym);
+
+	len = dprintf(keymap->fd, "    key <I%03d> { [ ", keyid);
+	if (len == -1)
+		return len;
+	keymap->size += len;
+
+	len = write_keysym(keymap->fd, keysym);
+	if (len == -1)
+		return len;
+	keymap->size += len;
+
+	len = dprintf(keymap->fd, ", ");
+	if (len == -1)
+		return len;
+	keymap->size += len;
+
+	len = write_keysym(keymap->fd, upper);
+	if (len == -1)
+		return len;
+	keymap->size += len;
+
+	len = dprintf(keymap->fd, " ] };\n");
+	if (len == -1)
+		return len;
+	keymap->size += len;
+
+	len = maybe_write_modmap(keymap->fd, keyid, keysym);
+	if (len == -1)
+		return len;
+	keymap->size += len;
+
+	keymap->count++;
+
+	return keyid;
+}
+
+void ufkbd_keymap_end(struct ufkbd_keymap *keymap)
+{
+	int i;
+	int fd = keymap->fd;
+	size_t written;
+
+	written = dprintf(fd, "  };\n"
+			      "\n"
+			      "  xkb_keycodes \"ufkbd\" {\n"
+			      "    minimum = 8;\n"
+			      "    maximum = 255;\n");
+
+	for (i = 8; i < keymap->count; i++)
+		written += dprintf(fd, "    <I%03d> = %d;\n", i, i);
+
+	written += dprintf(fd, "    indicator 1 = \"Caps Lock\";\n"
+			       "  };\n"
+			       "\n"
+			       "  xkb_types \"ufkbd\" {\n"
+			       "    type \"TWO_LEVEL\" {\n"
+			       "        modifiers = Shift;\n"
+			       "        map[Shift] = Level2;\n"
+			       "        level_name[Level1] = \"Base\";\n"
+			       "        level_name[Level2] = \"Shift\";\n"
+			       "    };\n"
+			       "  };\n"
+			       "\n"
+			       "  xkb_compatibility \"ufkbd\" {\n"
+			       "  };\n"
+			       "};\n");
+
+	keymap->size += written;
+}
+
+struct ufkbd_keymap *ufkbd_keymap_init(void)
+{
+	struct ufkbd_keymap *keymap;
+	intmax_t pid;
+
+	keymap = malloc(sizeof(*keymap));
+	if (keymap == NULL)
+		return NULL;
+
+	pid = getpid();
+	snprintf(keymap->path, 256, "/tmp/ufkbd-keymap-pid%ju", pid);
+
+	keymap->fd = open(keymap->path, O_RDWR | O_CREAT | O_TRUNC, 0644);
+	if (keymap->fd == -1)
+		goto err;
+
+	keymap->count = 8;
+	keymap->size = dprintf(keymap->fd, "xkb_keymap {\n"
+					   "  xkb_symbols \"ufkbd\" {\n");
+
+	return keymap;
+
+err:
+	free(keymap);
+	return NULL;
+}
+
+void ufkbd_keymap_uninit(struct ufkbd_keymap *keymap)
+{
+	close(keymap->fd);
+	unlink(keymap->path);
+	free(keymap);
+}

layout.c

@@ -0,0 +1,184 @@
+// SPDX-License-Identifier: GPL-3.0-only
+/*
+ * Copyright (c) 2024, Richard Acayan. All rights reserved.
+ */
+
+#include <stddef.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+
+#include "graphics.h"
+#include "layout.h"
+#include "parser.h"
+#include "ufkbd.h"
+
+static struct ufkbd_layout_row *search_row(struct ufkbd_layout *layout, int y)
+{
+	struct ufkbd_layout_row *row;
+	size_t row1 = 0, row2;
+	size_t idx;
+
+	if (layout->rows == NULL)
+		return NULL;
+
+	row2 = layout->n_rows - 1;
+
+	do {
+		idx = (row1 + row2) / 2;
+		row = &layout->rows[idx];
+
+		if (row->y1 <= y)
+			row1 = idx;
+
+		if (row->y2 >= y)
+			row2 = idx;
+	} while (row2 - row1 > 1);
+
+	if (layout->rows[row1].y1 <= y && layout->rows[row1].y2 >= y)
+		return &layout->rows[row1];
+	else if (layout->rows[row2].y1 <= y && layout->rows[row2].y2 >= y)
+		return &layout->rows[row2];
+
+	return NULL;
+}
+
+static struct ufkbd_layout_column *search_col(struct ufkbd_layout_row *row, int x)
+{
+	struct ufkbd_layout_column *col;
+	size_t col1 = 0, col2;
+	size_t idx;
+
+	col2 = row->n_cols - 1;
+
+	do {
+		idx = (col1 + col2) / 2;
+		col = &row->cols[idx];
+
+		if (col->x1 <= x)
+			col1 = idx;
+
+		if (col->x2 >= x)
+			col2 = idx;
+	} while (col2 - col1 > 1);
+
+	if (row->cols[col1].x1 <= x && row->cols[col1].x2 >= x)
+		return &row->cols[col1];
+	else if (row->cols[col2].x1 <= x && row->cols[col2].x2 >= x)
+		return &row->cols[col2];
+
+	return NULL;
+}
+
+struct ufkbd_key *ufkbd_layout_search(struct ufkbd_layout *layout, int x, int y,
+				      int *x1, int *y1, int *x2, int *y2)
+{
+	struct ufkbd_layout_row *row;
+	struct ufkbd_layout_column *col;
+
+	if (layout == NULL)
+		return NULL;
+
+	row = search_row(layout, y);
+	if (row == NULL)
+		return NULL;
+
+	col = search_col(row, x);
+	if (col == NULL)
+		return NULL;
+
+	if (x1 != NULL)
+		*x1 = col->x1;
+
+	if (y1 != NULL)
+		*y1 = row->y1;
+
+	if (x2 != NULL)
+		*x2 = col->x2;
+
+	if (y2 != NULL)
+		*y2 = row->y2;
+
+	return col->key;
+}
+
+void ufkbd_layout_foreach(struct ufkbd_layout *layout,
+			  void (*func)(struct ufkbd_key *key,
+				       int x1, int y1, int x2, int y2,
+				       void *data),
+			  void *data)
+{
+	struct ufkbd_layout_row *row;
+	struct ufkbd_layout_column *col;
+	size_t y, x;
+
+	for (y = 0; y < layout->n_rows; y++) {
+		row = &layout->rows[y];
+
+		for (x = 0; x < row->n_cols; x++) {
+			col = &row->cols[x];
+			func(col->key,
+			     col->x1, row->y1, col->x2, row->y2,
+			     data);
+		}
+	}
+}
+
+void ufkbd_layout_resize(struct ufkbd_layout *layout, int width, int height)
+{
+	struct ufkbd_layout_row *row;
+	struct ufkbd_layout_column *col;
+	size_t y, x;
+
+	for (y = 0; y < layout->n_rows; y++) {
+		row = &layout->rows[y];
+
+		row->y1 = row->y1_unscaled * height / layout->n_rows;
+		row->y2 = row->y2_unscaled * height / layout->n_rows - 1;
+
+		if (row->y2 < row->y1)
+			row->y2 = row->y1;
+
+		for (x = 0; x < row->n_cols; x++) {
+			col = &row->cols[x];
+			col->x1 = col->x1_unscaled * width / layout->max_cols;
+			col->x2 = col->x2_unscaled * width / layout->max_cols - 1;
+
+			if (col->x2 < col->x1)
+				col->x2 = col->x1;
+		}
+	}
+}
+
+struct ufkbd_layout *ufkbd_layout_init(void)
+{
+	struct ufkbd_layout *layout;
+
+	layout = malloc(sizeof(*layout));
+	if (layout == NULL)
+		return NULL;
+
+	layout->max_cols = 0;
+	layout->n_rows = 0;
+	layout->rows = NULL;
+
+	return layout;
+}
+
+void ufkbd_layout_uninit(struct ufkbd_layout *layout)
+{
+	struct ufkbd_layout_row *row;
+	size_t x, y;
+
+	for (y = 0; y < layout->n_rows; y++) {
+		row = &layout->rows[y];
+
+		for (x = 0; x < row->n_cols; x++)
+			free(row->cols[x].key);
+
+		free(row->cols);
+	}
+
+	free(layout->rows);
+	free(layout);
+}

main.c

@@ -0,0 +1,121 @@
+// SPDX-License-Identifier: GPL-3.0-only
+/*
+ * Copyright (c) 2024, Richard Acayan. All rights reserved.
+ */
+
+#include <fcntl.h>
+#include <signal.h>
+#include <stdbool.h>
+#include <stddef.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <unistd.h>
+
+#include "graphics.h"
+#include "input.h"
+#include "layout.h"
+#include "keymap.h"
+#include "parser.h"
+#include "ufkbd.h"
+
+extern struct ufkbd_input_driver ufkbd_input_wayland;
+extern struct ufkbd_driver ufkbd_wayland;
+
+static struct ufkbd_ctx *ufkbd = NULL;
+
+void ufkbd_terminate(struct ufkbd_ctx *ctx)
+{
+	if (ctx != NULL)
+		ctx->terminate = true;
+}
+
+static void sighandler(int sig)
+{
+	ufkbd_terminate(ufkbd);
+}
+
+static int parse_layout(struct ufkbd_keymap *keymap, struct ufkbd_layout *layout)
+{
+	int ret, fd;
+
+	fd = open("/usr/share/unfettered-keyboard/layouts", O_DIRECTORY | O_RDONLY);
+	if (fd == -1) {
+		perror("layout: failed to open /usr/share/unfettered-keyboard/layouts");
+		return 1;
+	}
+
+	ret = ufkbd_parser_parse(fd, "latn_qwerty_us.xml", keymap, layout);
+	if (ret) {
+		fprintf(stderr, "layout: failed to parse layout: %s\n",
+			strerror(-ret));
+		return 1;
+	}
+
+	close(fd);
+
+	return 0;
+}
+
+int main(void)
+{
+	struct ufkbd_ctx *ctx;
+	size_t i;
+	int ret;
+
+	signal(SIGINT, sighandler);
+	signal(SIGTERM, sighandler);
+
+	ctx = calloc(1, sizeof(*ctx));
+	if (ctx == NULL)
+		return 1;
+
+	ufkbd = ctx;
+
+	ctx->keymap = ufkbd_keymap_init();
+	if (ctx->keymap == NULL)
+		return 1;
+
+	ctx->layout = ufkbd_layout_init();
+	if (ctx->layout == NULL)
+		return 1;
+
+	ret = parse_layout(ctx->keymap, ctx->layout);
+	if (ret)
+		return ret;
+
+	ufkbd_keymap_end(ctx->keymap);
+
+	ctx->graphics = ufkbd_graphics_init();
+	if (ctx->graphics == NULL)
+		return 1;
+
+	ctx->drv = &ufkbd_wayland;
+	ctx->drv_data = ctx->drv->init(ctx);
+	if (ctx->drv_data == NULL)
+		return 1;
+
+	ctx->repeat_delay_ns = 600000000;
+	ctx->repeat_interval_ns = 25000000;
+	ctx->dist_squared = 1000;
+
+	for (i = 0; i < UFKBD_PRESS_MAX; i++)
+		ctx->presses[i].key = NULL;
+
+	while (!ctx->terminate) {
+		if (ctx->n_presses) {
+			ctx->drv->listen_step(ctx->drv_data, 25);
+			ufkbd_input_repeat_held(ctx);
+		} else {
+			ctx->drv->listen_step(ctx->drv_data, -1);
+		}
+	}
+
+	ctx->drv->uninit(ctx->drv_data);
+
+	ufkbd_graphics_uninit(ctx->graphics);
+	ufkbd_layout_uninit(ctx->layout);
+	ufkbd_keymap_uninit(ctx->keymap);
+
+	free(ctx);
+}

meson.build

@@ -0,0 +1,38 @@
+# SPDX-License-Identifier: GPL-3.0-only
+
+project('ufkbd', 'c')
+
+compiler = meson.get_compiler('c')
+
+expat = dependency('expat')
+fcft = dependency('fcft')
+pixman = dependency('pixman-1')
+utf8proc = dependency('libutf8proc')
+wayland = dependency('wayland-client')
+xkbcommon = dependency('xkbcommon')
+
+libm = compiler.find_library('m')
+
+executable('ufkbd',
+  [
+    'graphics.c',
+    'input.c',
+    'keymap.c',
+    'layout.c',
+    'main.c',
+    'modifier.c',
+    'parser.c',
+    'wayland/protocols/input-method-unstable-v2.c',
+    'wayland/protocols/viewporter.c',
+    'wayland/protocols/virtual-keyboard-unstable-v1.c',
+    'wayland/protocols/wlr-layer-shell-unstable-v1.c',
+    'wayland/protocols/xdg-shell.c',
+    'wayland/buffer.c',
+    'wayland/driver.c',
+    'wayland/input.c',
+    'wayland/surface.c',
+  ],
+  dependencies : [expat, fcft, libm, pixman, utf8proc, wayland, xkbcommon],
+  include_directories : 'include',
+  c_args : ['-Wall', '-Wextra', '-Wpedantic', '-Wno-unused-parameter'],
+)

modifier.c

@@ -0,0 +1,159 @@
+// SPDX-License-Identifier: GPL-3.0-only
+/*
+ * Management of keys that can be latched or locked.
+ *
+ * Copyright (c) 2024, Richard Acayan. All rights reserved.
+ */
+
+#include <time.h>
+#include <xkbcommon/xkbcommon.h>
+
+#include "ufkbd.h"
+
+static int mod_key_id(xkb_keysym_t sym)
+{
+	if (sym == XKB_KEY_Shift_L || sym == XKB_KEY_Shift_R)
+		return UFKBD_MOD_SHIFT;
+	else if (sym == XKB_KEY_Control_L || sym == XKB_KEY_Control_R)
+		return UFKBD_MOD_CTRL;
+	else if (sym == XKB_KEY_Alt_L || sym == XKB_KEY_Alt_R)
+		return UFKBD_MOD_ALT;
+
+	return -1;
+}
+
+static inline enum ufkbd_mod_state get_mod_state(const struct ufkbd_ctx *ctx, int id)
+{
+	int shift = id % 16 * 2;
+
+	return (ctx->mods[id / 16] >> shift) & 0x3;
+}
+
+static inline void set_mod_state(struct ufkbd_ctx *ctx, int id, enum ufkbd_mod_state state)
+{
+	int shift = id % 16 * 2;
+
+	ctx->mods[id / 16] = (ctx->mods[id / 16] & ~(0x3 << shift))
+						 | state << shift;
+}
+
+bool ufkbd_is_modifier(struct ufkbd_press *press)
+{
+	xkb_keysym_t sym;
+	int part, mod;
+
+	part = press->part;
+	sym = press->key->keysyms[part];
+
+	mod = mod_key_id(sym);
+
+	return mod != -1;
+}
+
+enum ufkbd_mod_state ufkbd_modifier_get_state(const struct ufkbd_ctx *ctx,
+					      const struct ufkbd_key *key,
+					      int part)
+{
+	xkb_keysym_t sym;
+	int mod;
+
+	sym = key->keysyms[part];
+
+	mod = mod_key_id(sym);
+	if (mod == -1)
+		return UFKBD_MOD_RELEASED;
+
+	return get_mod_state(ctx, mod);
+}
+
+void ufkbd_modifier_press(struct ufkbd_ctx *ctx, struct ufkbd_press *press)
+{
+	xkb_keysym_t sym;
+	enum ufkbd_mod_state curr;
+	int part, mod;
+
+	part = press->part;
+	sym = press->key->keysyms[part];
+
+	// If this fails, the key is not a modifier key.
+	mod = mod_key_id(sym);
+	if (mod == -1)
+		return;
+
+	curr = get_mod_state(ctx, mod);
+	if (curr == UFKBD_MOD_RELEASED) {
+		set_mod_state(ctx, mod, UFKBD_MOD_PRESSED);
+		ctx->drv->send_mod(ctx->drv_data, mod, true);
+	}
+}
+
+void ufkbd_modifier_cancel(struct ufkbd_ctx *ctx, struct ufkbd_press *press)
+{
+	xkb_keysym_t sym;
+	enum ufkbd_mod_state curr;
+	int part, mod;
+
+	part = press->part;
+	sym = press->key->keysyms[part];
+
+	mod = mod_key_id(sym);
+	if (mod == -1)
+		return;
+
+	curr = get_mod_state(ctx, mod);
+	if (curr == UFKBD_MOD_PRESSED) {
+		set_mod_state(ctx, mod, UFKBD_MOD_RELEASED);
+		ctx->drv->send_mod(ctx->drv_data, mod, false);
+	}
+}
+
+void ufkbd_modifier_release(struct ufkbd_ctx *ctx, struct ufkbd_press *press)
+{
+	struct timespec now = {
+		.tv_sec = 0,
+		.tv_nsec = 0,
+	};
+	enum ufkbd_mod_state curr;
+	xkb_keysym_t sym;
+	int part, mod;
+
+	part = press->part;
+	sym = press->key->keysyms[part];
+
+	mod = mod_key_id(sym);
+	if (mod == -1)
+		return;
+
+	curr = get_mod_state(ctx, mod);
+
+	if (curr == UFKBD_MOD_PRESSED) {
+		clock_gettime(CLOCK_REALTIME, &now);
+
+		if (now.tv_sec > press->repeat.tv_sec
+		 || (now.tv_sec == press->repeat.tv_sec
+		  && now.tv_nsec > press->repeat.tv_nsec))
+			set_mod_state(ctx, mod, UFKBD_MOD_LOCKED);
+		else
+			set_mod_state(ctx, mod, UFKBD_MOD_LATCHED);
+	} else if (curr == UFKBD_MOD_LATCHED || curr == UFKBD_MOD_LOCKED) {
+		set_mod_state(ctx, mod, UFKBD_MOD_RELEASED);
+		ctx->drv->send_mod(ctx->drv_data, mod, false);
+	}
+}
+
+void ufkbd_modifier_unlatch_all(struct ufkbd_ctx *ctx)
+{
+	enum ufkbd_mod_state curr;
+	int i;
+
+	for (i = 0; i < UFKBD_MOD_MAX; i++) {
+		curr = get_mod_state(ctx, i);
+		if (curr == UFKBD_MOD_LATCHED) {
+			set_mod_state(ctx, i, UFKBD_MOD_RELEASED);
+			ctx->drv->send_mod(ctx->drv_data, i, false);
+		} else if (curr == UFKBD_MOD_PRESSED) {
+			// This modifier key should go up on first release.
+			set_mod_state(ctx, i, UFKBD_MOD_LOCKED);
+		}
+	}
+}

parser.c

@@ -0,0 +1,460 @@
+// SPDX-License-Identifier: GPL-3.0-only
+/*
+ * Parser for keyboard layout files in the Unfettered Keyboard format.
+ *
+ * Copyright (c) 2024, Richard Acayan. All rights reserved.
+ */
+
+#include <errno.h>
+#include <expat.h>
+#include <fcntl.h>
+#include <stddef.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <unistd.h>
+#include <xkbcommon/xkbcommon.h>
+#include <xkbcommon/xkbcommon-keysyms.h>
+
+#include "keymap.h"
+#include "layout.h"
+#include "ufkbd.h"
+
+#define ARRAY_SIZE(a) (sizeof(a) / sizeof(*(a)))
+#define BOTTOM_ROW_FILE "bottom_row.xml"
+
+struct ufkbd_parser_ctx {
+	struct ufkbd_keymap *keymap;
+	struct ufkbd_layout *layout;
+	struct ufkbd_layout_row *row;
+	int err;
+};
+
+struct keyid_long {
+	const char *name;
+	int keyid;
+};
+
+/*
+ * This lookup table is sorted by codepoint so binary searches can be performed
+ * on it. Hash tables are too difficult to define statically.
+ */
+static const struct keyid_long keyids_long[] = {
+	{ .name = "\\#", .keyid = XKB_KEY_numbersign, },
+	{ .name = "\\?", .keyid = XKB_KEY_question, },
+	{ .name = "\\@", .keyid = XKB_KEY_at, },
+	{ .name = "\\\\", .keyid = XKB_KEY_backslash, },
+	{ .name = "backspace", .keyid = XKB_KEY_BackSpace, },
+	{ .name = "ctrl", .keyid = XKB_KEY_Control_L, },
+	{ .name = "delete", .keyid = XKB_KEY_Delete, },
+	{ .name = "down", .keyid = XKB_KEY_Down, },
+	{ .name = "enter", .keyid = XKB_KEY_Return, },
+	{ .name = "esc", .keyid = XKB_KEY_Escape, },
+	{ .name = "fn", .keyid = XKB_KEY_XF86Fn, },
+	{ .name = "left", .keyid = XKB_KEY_Left, },
+	{ .name = "loc alt", .keyid = XKB_KEY_Alt_L, },
+	{ .name = "right", .keyid = XKB_KEY_Right, },
+	{ .name = "shift", .keyid = XKB_KEY_Shift_L, },
+	{ .name = "space", .keyid = XKB_KEY_space, },
+	{ .name = "tab", .keyid = XKB_KEY_Tab, },
+	{ .name = "up", .keyid = XKB_KEY_Up, },
+};
+
+static void fill_lut_part(struct ufkbd_key *key,
+			  enum ufkbd_part part,
+			  enum ufkbd_part prev,
+			  enum ufkbd_part next,
+			  enum ufkbd_part prev_far,
+			  enum ufkbd_part next_far,
+			  size_t idx_p, size_t idx_n)
+{
+	if (key->keyids[part] == -1)
+		return;
+
+	key->lut[idx_p] = part;
+	key->lut[idx_n] = part;
+
+	if (key->keyids[prev] == -1)
+		key->lut[(idx_p - 1) % 16] = part;
+
+	if (key->keyids[next] == -1)
+		key->lut[(idx_n + 1) % 16] = part;
+
+	if (key->keyids[prev_far] == -1) {
+		key->lut[(idx_p - 2) % 16] = part;
+		key->lut[(idx_p - 3) % 16] = part;
+	}
+
+	if (key->keyids[next_far] == -1) {
+		key->lut[(idx_n + 2) % 16] = part;
+		key->lut[(idx_n + 3) % 16] = part;
+	}
+}
+
+static void construct_key_lut(struct ufkbd_key *key)
+{
+	size_t i;
+
+	for (i = 0; i < UFKBD_PART_MAX; i++)
+		key->lut[i] = 0;
+
+	fill_lut_part(key, UFKBD_PART_RIGHT,
+		      UFKBD_PART_TR, UFKBD_PART_BR,
+		      UFKBD_PART_TOP, UFKBD_PART_BOTTOM, 
+		      15, 0);
+	fill_lut_part(key, UFKBD_PART_BR,
+		      UFKBD_PART_RIGHT, UFKBD_PART_BOTTOM,
+		      UFKBD_PART_TR, UFKBD_PART_BL, 
+		      1, 2);
+	fill_lut_part(key, UFKBD_PART_BOTTOM,
+		      UFKBD_PART_BR, UFKBD_PART_BL,
+		      UFKBD_PART_RIGHT, UFKBD_PART_LEFT, 
+		      3, 4);
+	fill_lut_part(key, UFKBD_PART_BL,
+		      UFKBD_PART_BOTTOM, UFKBD_PART_LEFT,
+		      UFKBD_PART_BR, UFKBD_PART_TL, 
+		      5, 6);
+	fill_lut_part(key, UFKBD_PART_LEFT,
+		      UFKBD_PART_BL, UFKBD_PART_TL,
+		      UFKBD_PART_BOTTOM, UFKBD_PART_TOP, 
+		      7, 8);
+	fill_lut_part(key, UFKBD_PART_TL,
+		      UFKBD_PART_LEFT, UFKBD_PART_TOP,
+		      UFKBD_PART_BL, UFKBD_PART_TR, 
+		      9, 10);
+	fill_lut_part(key, UFKBD_PART_TOP,
+		      UFKBD_PART_TL, UFKBD_PART_TR,
+		      UFKBD_PART_LEFT, UFKBD_PART_RIGHT, 
+		      11, 12);
+	fill_lut_part(key, UFKBD_PART_TR,
+		      UFKBD_PART_TOP, UFKBD_PART_RIGHT,
+		      UFKBD_PART_TL, UFKBD_PART_BR, 
+		      13, 14);
+}
+
+static int compare_keyid_long(const void *va, const void *vb)
+{
+	const struct keyid_long *a = va;
+	const struct keyid_long *b = vb;
+
+	return strcmp(a->name, b->name);
+}
+
+static void parse_keyid_attr(struct ufkbd_keymap *keymap,
+			     int *keyid, xkb_keysym_t *keysym,
+			     const XML_Char *val)
+{
+	struct keyid_long *id_long;
+	struct keyid_long pattern;
+
+	pattern.name = val;
+
+	id_long = bsearch(&pattern, keyids_long,
+			  ARRAY_SIZE(keyids_long),
+			  sizeof(*keyids_long),
+			  compare_keyid_long);
+	if (id_long != NULL) {
+		*keysym = id_long->keyid;
+	} else if (val[1] == '\0') {
+		*keysym = val[0];
+	} else {
+		*keyid = -1;
+		return;
+	}
+
+	*keyid = ufkbd_keymap_add_key(keymap, *keysym);
+}
+
+static void parse_key_attrs(struct ufkbd_keymap *keymap,
+			    struct ufkbd_layout_column *col,
+			    double start,
+			    const XML_Char **attrs)
+{
+	struct ufkbd_key *key = col->key;
+	double width = 1;
+	size_t i;
+
+	for (i = 0; attrs[i] != NULL && attrs[i + 1] != NULL; i += 2) {
+		if (!strcmp(attrs[i], "key0"))
+			parse_keyid_attr(keymap,
+					 &key->keyids[UFKBD_PART_CENTER],
+					 &key->keysyms[UFKBD_PART_CENTER],
+					 attrs[i + 1]);
+		else if (!strcmp(attrs[i], "key1"))
+			parse_keyid_attr(keymap,
+					 &key->keyids[UFKBD_PART_TL],
+					 &key->keysyms[UFKBD_PART_TL],
+					 attrs[i + 1]);
+		else if (!strcmp(attrs[i], "key2"))
+			parse_keyid_attr(keymap,
+					 &key->keyids[UFKBD_PART_TR],
+					 &key->keysyms[UFKBD_PART_TR],
+					 attrs[i + 1]);
+		else if (!strcmp(attrs[i], "key3"))
+			parse_keyid_attr(keymap,
+					 &key->keyids[UFKBD_PART_BL],
+					 &key->keysyms[UFKBD_PART_BL],
+					 attrs[i + 1]);
+		else if (!strcmp(attrs[i], "key4"))
+			parse_keyid_attr(keymap,
+					 &key->keyids[UFKBD_PART_BR],
+					 &key->keysyms[UFKBD_PART_BR],
+					 attrs[i + 1]);
+		else if (!strcmp(attrs[i], "key5"))
+			parse_keyid_attr(keymap,
+					 &key->keyids[UFKBD_PART_LEFT],
+					 &key->keysyms[UFKBD_PART_LEFT],
+					 attrs[i + 1]);
+		else if (!strcmp(attrs[i], "key6"))
+			parse_keyid_attr(keymap,
+					 &key->keyids[UFKBD_PART_RIGHT],
+					 &key->keysyms[UFKBD_PART_RIGHT],
+					 attrs[i + 1]);
+		else if (!strcmp(attrs[i], "key7"))
+			parse_keyid_attr(keymap,
+					 &key->keyids[UFKBD_PART_TOP],
+					 &key->keysyms[UFKBD_PART_TOP],
+					 attrs[i + 1]);
+		else if (!strcmp(attrs[i], "key8"))
+			parse_keyid_attr(keymap,
+					 &key->keyids[UFKBD_PART_BOTTOM],
+					 &key->keysyms[UFKBD_PART_BOTTOM],
+					 attrs[i + 1]);
+		else if (!strcmp(attrs[i], "shift"))
+			start += strtod(attrs[i + 1], NULL);
+		else if (!strcmp(attrs[i], "width"))
+			width = strtod(attrs[i + 1], NULL);
+		else
+			fprintf(stderr, "parser: skipping unknown key attribute %s\n",
+				attrs[i]);
+	}
+
+	col->x1_unscaled = start;
+	col->x2_unscaled = start + width;
+}
+
+static void parse_row_attrs(struct ufkbd_layout_row *row,
+			   double start,
+			   const XML_Char **attrs)
+{
+	double height = 1;
+	size_t i;
+
+	for (i = 0; attrs[i] != NULL && attrs[i + 1] != NULL; i += 2) {
+		if (!strcmp(attrs[i], "height"))
+			height = strtod(attrs[i + 1], NULL);
+	}
+
+	row->y1_unscaled = start;
+	row->y2_unscaled = start + height;
+}
+
+static int start_key(struct ufkbd_parser_ctx *ctx, const XML_Char **attrs)
+{
+	struct ufkbd_layout_column *col, *prev;
+	struct ufkbd_layout_column *cols;
+	struct ufkbd_layout_row *row;
+	struct ufkbd_key *key;
+	double start = 0;
+	size_t i;
+
+	if (ctx->row == NULL)
+		return -EINVAL;
+
+	row = ctx->row;
+
+	key = malloc(sizeof(*key));
+	if (key == NULL)
+		return -errno;
+
+	cols = realloc(row->cols, (row->n_cols + 1) * sizeof(*cols));
+	if (cols == NULL)
+		return -errno;
+
+	for (i = 0; i < UFKBD_PART_MAX; i++) {
+		key->labels_mask[i] = NULL;
+		key->labels_color[i] = NULL;
+		key->presses[i] = 0;
+		key->keyids[i] = -1;
+	}
+
+	col = &cols[row->n_cols];
+	prev = &cols[row->n_cols - 1];
+
+	col->key = key;
+
+	if (row->n_cols > 0)
+		start = prev->x2_unscaled;
+
+	parse_key_attrs(ctx->keymap, col, start, attrs);
+	construct_key_lut(key);
+
+	row->cols = cols;
+	row->n_cols++;
+
+	return 0;
+}
+
+static int start_row(struct ufkbd_parser_ctx *ctx, const XML_Char **attrs)
+{
+	struct ufkbd_layout *layout = ctx->layout;
+	struct ufkbd_layout_row *rows;
+	struct ufkbd_layout_row *row, *prev;
+	double start = 0;
+
+	rows = realloc(layout->rows, (layout->n_rows + 1) * sizeof(*rows));
+	if (rows == NULL)
+		return -errno;
+
+	row = &rows[layout->n_rows];
+	prev = &rows[layout->n_rows - 1];
+
+	if (layout->n_rows > 0)
+		start = prev->y2_unscaled;
+
+	parse_row_attrs(row, start, attrs);
+
+	row->cols = NULL;
+	row->n_cols = 0;
+
+	layout->rows = rows;
+	layout->n_rows++;
+
+	ctx->row = row;
+
+	return 0;
+}
+
+static void start_elem(void *data, const XML_Char *name, const XML_Char **attrs)
+{
+	struct ufkbd_parser_ctx *ctx = data;
+	int ret = 0;
+
+	if (!strcmp(name, "key"))
+		ret = start_key(ctx, attrs);
+	else if (!strcmp(name, "row"))
+		ret = start_row(ctx, attrs);
+
+	if (ret)
+		fprintf(stderr, "parser: skipping %s: %s\n",
+			name, strerror(-ret));
+}
+
+static void end_elem(void *data, const XML_Char *name)
+{
+	struct ufkbd_parser_ctx *ctx = data;
+
+	if (!strcmp(name, "row")) {
+		if (ctx->row == NULL)
+			return;
+
+		if (ctx->layout->max_cols < ctx->row->n_cols)
+			ctx->layout->max_cols = ctx->row->n_cols;
+
+		ctx->row = NULL;
+	}
+}
+
+static int parse_until_eof(XML_Parser parser, int fd)
+{
+	char *buf;
+	ssize_t len;
+	size_t size = 4096;
+	enum XML_Status status;
+	enum XML_Error err;
+	int ret = 0;
+
+	buf = malloc(size);
+	if (buf == NULL)
+		return -errno;
+
+	do {
+		len = read(fd, buf, size);
+		if (len == -1) {
+			ret = -errno;
+			goto err;
+		}
+
+		status = XML_Parse(parser, (const char *) buf, len, len == 0);
+		if (status != XML_STATUS_OK) {
+			err = XML_GetErrorCode(parser);
+			fprintf(stderr, "parser: xml parsing failed: "
+#ifdef XML_UNICODE_WCHAR_T
+				"%ls\n",
+#else
+				"%s\n",
+#endif
+				XML_ErrorString(err));
+
+			ret = -EINVAL;
+			goto err;
+		}
+	} while (len != 0);
+
+err:
+	free(buf);
+	return ret;
+}
+
+static int parse_file(int dir, const char *file, XML_Parser parser)
+{
+	int fd, ret;
+
+	fd = openat(dir, file, O_RDONLY);
+	if (fd == -1)
+		return -errno;
+
+	ret = parse_until_eof(parser, fd);
+	if (ret)
+		goto err_close;
+
+err_close:
+	close(fd);
+	return ret;
+}
+
+int ufkbd_parser_parse(int dir, const char *fname,
+		       struct ufkbd_keymap *keymap,
+		       struct ufkbd_layout *layout)
+{
+	struct ufkbd_parser_ctx *ctx;
+	XML_Parser parser;
+	int ret;
+
+	if (layout == NULL)
+		return -EINVAL;
+
+	ctx = malloc(sizeof(*ctx));
+	if (layout == NULL)
+		return -errno;
+
+	ctx->keymap = keymap;
+	ctx->layout = layout;
+	ctx->row = NULL;
+	ctx->err = 0;
+
+	parser = XML_ParserCreate(NULL);
+	if (parser == NULL) {
+		ret = -ENOMEM;
+		goto err_free_ctx;
+	}
+
+	XML_SetElementHandler(parser, start_elem, end_elem);
+	XML_SetUserData(parser, ctx);
+
+	ret = parse_file(dir, fname, parser);
+	if (ret)
+		goto err_free_parser;
+
+	XML_ParserReset(parser, NULL);
+	XML_SetElementHandler(parser, start_elem, end_elem);
+	XML_SetUserData(parser, ctx);
+
+	ret = parse_file(dir, BOTTOM_ROW_FILE, parser);
+
+err_free_parser:
+	XML_ParserFree(parser);
+err_free_ctx:
+	free(ctx);
+	return ret;
+}

wayland/buffer.c

@@ -0,0 +1,215 @@
+// SPDX-License-Identifier: GPL-3.0-only
+/*
+ * Wayland buffer management.
+ *
+ * Copyright (c) 2024, Richard Acayan. All rights reserved.
+ */
+
+#include <errno.h>
+#include <fcntl.h>
+#include <stdbool.h>
+#include <sys/mman.h>
+#include <unistd.h>
+#include <wayland-client-protocol.h>
+
+#include "wayland.h"
+
+static int commit_buffer_resize(struct ufkbd_wl_buffer *ctx);
+
+static void on_buffer_release(void *data, struct wl_buffer *buf)
+{
+	struct ufkbd_wl_buffer *ctx = data;
+
+	if (ctx->resize)
+		commit_buffer_resize(ctx);
+
+	ctx->avail = true;
+}
+
+static const struct wl_buffer_listener buf_listener = {
+	.release = on_buffer_release,
+};
+
+static int commit_buffer_resize(struct ufkbd_wl_buffer *ctx)
+{
+	int ret;
+
+	wl_buffer_destroy(ctx->buf);
+
+	ret = ftruncate(ctx->fd, ctx->size);
+	if (ret == -1) {
+		perror("wl: failed to resize shared memory");
+		return -errno;
+	}
+
+	ctx->ptr = mmap(NULL, ctx->size, PROT_READ | PROT_WRITE, MAP_SHARED, ctx->fd, 0);
+	if (ctx->ptr == MAP_FAILED) {
+		perror("wl: failed to map buffer");
+		return -errno;
+	}
+
+	wl_shm_pool_resize(ctx->pool, ctx->size);
+
+	ctx->buf = wl_shm_pool_create_buffer(ctx->pool, 0,
+					     ctx->width, ctx->height,
+					     ctx->width * 4,
+					     WL_SHM_FORMAT_XRGB8888);
+	if (ctx->buf == NULL) {
+		fprintf(stderr, "wl: lost a buffer to failed resize\n");
+		ctx->avail = false;
+	}
+
+	wl_buffer_add_listener(ctx->buf, &buf_listener, ctx);
+
+	ctx->resize = false;
+
+	return 0;
+}
+
+static void on_wl_shm(void *data,
+		      struct wl_registry *reg,
+		      uint32_t name, uint32_t ver)
+{
+	struct ufkbd_wl_buffer *ctx = data;
+
+	ctx->wl = wl_registry_bind(reg, name, &wl_shm_interface, ver);
+	if (ctx->wl == NULL) {
+		fprintf(stderr, "wl: failed to bind to shared memory\n");
+		return;
+	}
+
+	ctx->pool = wl_shm_create_pool(ctx->wl, ctx->fd, 4);
+	if (ctx->pool == NULL) {
+		fprintf(stderr, "wl: failed to create memory pool\n");
+		return;
+	}
+
+	ctx->buf = wl_shm_pool_create_buffer(ctx->pool, 0,
+					     1, 1, 4,
+					     WL_SHM_FORMAT_XRGB8888);
+	if (ctx->buf == NULL) {
+		fprintf(stderr, "wl: failed to create buffer\n");
+		return;
+	}
+
+	wl_buffer_add_listener(ctx->buf, &buf_listener, ctx);
+}
+
+int ufkbd_wl_buffer_consume(struct ufkbd_wl_buffer *ctx,
+				    struct wl_buffer **buf, void **ptr)
+{
+	if (buf == NULL || ptr == NULL)
+		return -EINVAL;
+
+	if (!ctx->avail)
+		return -EBUSY;
+
+	ctx->avail = false;
+
+	*buf = ctx->buf;
+	*ptr = ctx->ptr;
+
+	return 0;
+}
+
+int ufkbd_wl_buffer_resize(struct ufkbd_wl_buffer *ctx,
+				   uint32_t width, uint32_t height)
+{
+	int ret;
+
+	if (width == 0 && height == 0)
+		return -EINVAL;
+
+	ctx->width = width;
+	ctx->height = height;
+
+	if (ctx->size < ctx->width * ctx->height * 4) {
+		munmap(ctx->ptr, ctx->size);
+
+		ctx->size = ctx->width * ctx->height * 4;
+	}
+
+	if (ctx->avail) {
+		ret = commit_buffer_resize(ctx);
+		if (ret)
+			return ret;
+	} else {
+		ctx->resize = true;
+	}
+
+	return 0;
+}
+
+int ufkbd_wl_buffer_init(struct ufkbd_wl_buffer *ctx,
+				 struct ufkbd_input_wayland *ufkbd_wl,
+				 unsigned int id)
+{
+	intmax_t pid;
+	int ret;
+
+	ctx->ufkbd = ufkbd_wl->ufkbd;
+	ctx->id = id;
+
+	ctx->avail = true;
+	ctx->dirty = false;
+	ctx->resize = false;
+
+	ctx->listener.iface = &wl_shm_interface;
+	ctx->listener.cb = on_wl_shm;
+	ctx->listener.data = ctx;
+
+	pid = getpid();
+
+	snprintf(ctx->path, SHM_PATH_SIZE, "/wl_shm_ufkbd_pid%jd_%u", pid, id);
+	ctx->path[SHM_PATH_SIZE - 1] = '\0';
+
+	ctx->fd = shm_open(ctx->path, O_RDWR | O_CREAT | O_EXCL, 0600);
+	if (ctx->fd == -1) {
+		perror("wl: failed to create shared memory");
+		return -errno;
+	}
+
+	ret = ftruncate(ctx->fd, 4);
+	if (ret) {
+		perror("wl: failed to allocate 4 bytes on shm");
+		ret = -errno;
+		goto err;
+	}
+
+	ctx->ptr = mmap(NULL, 4, PROT_READ | PROT_WRITE, MAP_SHARED, ctx->fd, 0);
+	if (ctx->ptr == MAP_FAILED) {
+		perror("wl: failed to map buffer");
+		ret = -errno;
+		goto err;
+	}
+
+	ret = ufkbd_wl_global_listener_add(ufkbd_wl, &ctx->listener);
+	if (ret)
+		goto err;
+
+	ctx->width = 1; 
+	ctx->height = 1; 
+	ctx->size = 4;
+
+	return 0;
+
+err:
+	close(ctx->fd);
+	shm_unlink(ctx->path);
+	return ret;
+}
+
+void ufkbd_wl_buffer_uninit(struct ufkbd_wl_buffer *ctx)
+{
+	if (ctx->buf != NULL)
+		wl_buffer_destroy(ctx->buf);
+
+	if (ctx->pool != NULL)
+		wl_shm_pool_destroy(ctx->pool);
+
+	if (ctx->wl != NULL)
+		wl_shm_destroy(ctx->wl);
+
+	close(ctx->fd);
+	shm_unlink(ctx->path);
+}

wayland/driver.c

@@ -0,0 +1,247 @@
+// SPDX-License-Identifier: GPL-3.0-only
+/*
+ * Wayland driver.
+ *
+ * Copyright (c) 2024, Richard Acayan. All rights reserved.
+ */
+
+#include <errno.h>
+#include <poll.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <wayland-client.h>
+#include <xkbcommon/xkbcommon.h>
+
+#include "input.h"
+#include "ufkbd.h"
+#include "wayland.h"
+
+static void on_global_object(void *data,
+			     struct wl_registry *reg,
+			     uint32_t name,
+			     const char *iface,
+			     uint32_t version);
+
+static const struct wl_registry_listener reg_listener = {
+	.global = on_global_object,
+	.global_remove = NULL,
+};
+
+static void on_global_object(void *data,
+			     struct wl_registry *reg,
+			     uint32_t name,
+			     const char *iface,
+			     uint32_t version)
+{
+	struct ufkbd_input_wayland *ctx = data;
+	struct ufkbd_wl_global_listener *listener;
+	size_t i;
+
+	// This is assumed to be a small list.
+	for (i = 0; i < ctx->n_global_listeners; i++) {
+		listener = ctx->global_listeners[i];
+
+		if (!strcmp(iface, listener->iface->name))
+			listener->cb(listener->data, reg, name, version);
+	}
+}
+
+int ufkbd_wl_global_listener_add(struct ufkbd_input_wayland *ctx,
+				 struct ufkbd_wl_global_listener *listener)
+{
+	size_t idx = ctx->n_global_listeners;
+
+	if (idx >= MAX_GLOBAL_LISTENERS) {
+		fprintf(stderr, "wl: no space for internal callback\n");
+		return -ENOSPC;
+	}
+
+	ctx->global_listeners[idx] = listener;
+	ctx->n_global_listeners++;
+
+	return 0;
+}
+
+static void ufkbd_wayland_listen_one(void *data, bool block)
+{
+	struct ufkbd_input_wayland *ctx = data;
+	struct pollfd pollfd;
+	int timeout = 0;
+	int ret;
+
+	if (block)
+		timeout = -1;
+
+	// Some listen events may be queued, so send them.
+	ret = wl_display_flush(ctx->display);
+	if (ret < 0)
+		fprintf(stderr, "warn: failed to flush outgoing events: %d\n", -errno);
+
+	pollfd.fd = ctx->fd;
+	pollfd.events = POLLIN;
+	pollfd.revents = 0;
+
+	ret = poll(&pollfd, 1, timeout);
+	if (ret == -1)
+		return;
+
+	if (pollfd.revents) {
+		ret = wl_display_dispatch(ctx->display);
+		if (ret == -1)
+			return;
+	}
+}
+
+static void ufkbd_wayland_listen_step(void *data, int timeout)
+{
+	struct ufkbd_input_wayland *ctx = data;
+	struct pollfd pollfd;
+	int ret;
+
+	// Some listen events may be queued, so send them.
+	ret = wl_display_flush(ctx->display);
+	if (ret < 0)
+		fprintf(stderr, "warn: failed to flush outgoing events: %d\n", -errno);
+
+	pollfd.fd = ctx->fd;
+	pollfd.events = POLLIN;
+	pollfd.revents = 0;
+
+	ret = poll(&pollfd, 1, timeout);
+	if (ret == -1)
+		return;
+
+	if (pollfd.revents) {
+		ret = wl_display_dispatch(ctx->display);
+		if (ret == -1)
+			return;
+	}
+}
+
+static int ufkbd_wayland_send_key(void *data, int code, bool repeat)
+{
+	struct ufkbd_input_wayland *ctx = data;
+
+	ufkbd_wl_input_send_key(ctx->input, code - 8, repeat);
+
+	return 0;
+}
+
+static int ufkbd_wayland_send_mod(void *data, enum ufkbd_modifier mod, bool pressed)
+{
+	struct ufkbd_input_wayland *ctx = data;
+
+	ufkbd_wl_input_send_mod(ctx->input, mod, pressed);
+
+	return 0;
+}
+
+static int ufkbd_wayland_draw_begin(void *data, size_t *stride, void **ptr)
+{
+	struct ufkbd_input_wayland *ctx = data;
+	struct wl_buffer *buf;
+	int ret;
+
+	ret = ufkbd_wl_surface_consume_buffer(ctx->surface, &buf, ptr);
+	if (ret) {
+		fprintf(stderr, "wl: warn: could not consume buffer: %s\n",
+			strerror(-ret));
+		return ret;
+	}
+
+	wl_surface_attach(ctx->surface->wl, buf, 0, 0);
+
+	// NOPUSH
+	*stride = (size_t) ctx->surface->bufs[0].width * 4;
+
+	return 0;
+}
+
+static void ufkbd_wayland_draw_touch(void *data, int x, int y, int width, int height)
+{
+	struct ufkbd_input_wayland *ctx = data;
+
+	wl_surface_damage_buffer(ctx->surface->wl, x, y, width, height);
+}
+
+static void ufkbd_wayland_draw_end(void *data)
+{
+	struct ufkbd_input_wayland *ctx = data;
+
+	wl_surface_commit(ctx->surface->wl);
+}
+
+static void *ufkbd_wayland_init(struct ufkbd_ctx *ufkbd)
+{
+	struct ufkbd_input_wayland *ctx;
+	int ret;
+
+	if (ufkbd == NULL)
+		return NULL;
+
+	ctx = calloc(1, sizeof(*ctx));
+	if (ctx == NULL)
+		return NULL;
+
+	ctx->ufkbd = ufkbd;
+
+	ctx->display = wl_display_connect(NULL);
+	if (ctx->display == NULL)
+		goto err_free_ctx;
+
+	ctx->registry = wl_display_get_registry(ctx->display);
+	if (ctx->registry == NULL)
+		goto err_disconnect;
+
+	ret = wl_registry_add_listener(ctx->registry, &reg_listener, ctx);
+	if (ret)
+		goto err_destroy_reg;
+
+	ret = ufkbd_wl_surface_init(ctx, &ctx->surface);
+	if (ret)
+		goto err_destroy_reg;
+
+	ret = ufkbd_wl_input_init(ctx, &ctx->input);
+	if (ret)
+		goto err_uninit_surface;
+
+	ctx->fd = wl_display_get_fd(ctx->display);
+
+	return ctx;
+
+err_uninit_surface:
+	ufkbd_wl_surface_uninit(ctx->surface);
+err_destroy_reg:
+	wl_registry_destroy(ctx->registry);
+err_disconnect:
+	wl_display_disconnect(ctx->display);
+err_free_ctx:
+	free(ctx);
+	return NULL;
+}
+
+static void ufkbd_wayland_uninit(void *data)
+{
+	struct ufkbd_input_wayland *ctx = data;
+
+	ufkbd_wl_input_uninit(ctx->input);
+	ufkbd_wl_surface_uninit(ctx->surface);
+
+	wl_registry_destroy(ctx->registry);
+	wl_display_disconnect(ctx->display);
+
+	free(ctx);
+}
+
+struct ufkbd_driver ufkbd_wayland = {
+	.init = ufkbd_wayland_init,
+	.uninit = ufkbd_wayland_uninit,
+	.listen_one = ufkbd_wayland_listen_one,
+	.listen_step = ufkbd_wayland_listen_step,
+	.send_key = ufkbd_wayland_send_key,
+	.send_mod = ufkbd_wayland_send_mod,
+	.draw_begin = ufkbd_wayland_draw_begin,
+	.draw_touch = ufkbd_wayland_draw_touch,
+	.draw_end = ufkbd_wayland_draw_end,
+};

wayland/input.c

@@ -0,0 +1,316 @@
+// SPDX-License-Identifier: GPL-3.0-only
+/*
+ * Wayland input handling.
+ *
+ * Copyright (c) 2024, Richard Acayan. All rights reserved.
+ */
+
+#include <errno.h>
+#include <fcntl.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <wayland-client-protocol.h>
+#include <xkbcommon/xkbcommon.h>
+
+#include "input.h"
+#include "keymap.h"
+#include "ufkbd.h"
+#include "wayland.h"
+#include "wayland/input-method-unstable-v2.h"
+#include "wayland/virtual-keyboard-unstable-v1.h"
+
+static void ignore()
+{}
+
+static void on_pointer_move(void *data,
+			    struct wl_pointer *pointer __attribute__((unused)),
+			    uint32_t serial __attribute__((unused)),
+			    wl_fixed_t x,
+			    wl_fixed_t y)
+{
+	struct ufkbd_wl_input *ctx = data;
+	struct ufkbd_input_wayland *ufkbd_wl = ctx->ufkbd_wl;
+	struct ufkbd_ctx *ufkbd = ufkbd_wl->ufkbd;
+
+	ufkbd_input_position(ufkbd, UFKBD_PRESS_MAX - 1, x / 256, y / 256);
+}
+
+static void on_pointer_button(void *data,
+			      struct wl_pointer *pointer,
+			      uint32_t serial,
+			      uint32_t time,
+			      uint32_t button,
+			      uint32_t state)
+{
+	struct ufkbd_wl_input *ctx = data;
+	struct ufkbd_input_wayland *ufkbd_wl = ctx->ufkbd_wl;
+	struct ufkbd_ctx *ufkbd = ufkbd_wl->ufkbd;
+
+	if (state == WL_POINTER_BUTTON_STATE_PRESSED)
+		ufkbd_input_press(ufkbd, UFKBD_PRESS_MAX - 1);
+	else if (state == WL_POINTER_BUTTON_STATE_RELEASED)
+		ufkbd_input_release(ufkbd, UFKBD_PRESS_MAX - 1);
+}
+
+static const struct wl_pointer_listener pointer_listener = {
+	.enter = ignore,
+	.leave = ignore,
+	.motion = on_pointer_move,
+	.button = on_pointer_button,
+	.axis = ignore,
+	.frame = ignore,
+	.axis_source = ignore,
+	.axis_stop = ignore,
+	.axis_discrete = ignore,
+	.axis_value120 = ignore,
+	.axis_relative_direction = ignore,
+};
+
+void on_touch_down(void *data,
+		   struct wl_touch *wl_touch,
+		   uint32_t serial,
+		   uint32_t time,
+		   struct wl_surface *surface,
+		   int32_t id,
+		   wl_fixed_t x,
+		   wl_fixed_t y)
+{
+	struct ufkbd_wl_input *ctx = data;
+	struct ufkbd_input_wayland *ufkbd_wl = ctx->ufkbd_wl;
+	struct ufkbd_ctx *ufkbd = ufkbd_wl->ufkbd;
+
+	ufkbd_input_position(ufkbd, id, x / 256, y / 256);
+	ufkbd_input_press(ufkbd, id);
+}
+
+void on_touch_up(void *data,
+		 struct wl_touch *wl_touch,
+		 uint32_t serial,
+		 uint32_t time,
+		 int32_t id)
+{
+	struct ufkbd_wl_input *ctx = data;
+	struct ufkbd_input_wayland *ufkbd_wl = ctx->ufkbd_wl;
+	struct ufkbd_ctx *ufkbd = ufkbd_wl->ufkbd;
+
+	ufkbd_input_release(ufkbd, id);
+}
+
+void on_touch_motion(void *data,
+		     struct wl_touch *wl_touch,
+		     uint32_t time,
+		     int32_t id,
+		     wl_fixed_t x,
+		     wl_fixed_t y)
+{
+	struct ufkbd_wl_input *ctx = data;
+	struct ufkbd_input_wayland *ufkbd_wl = ctx->ufkbd_wl;
+	struct ufkbd_ctx *ufkbd = ufkbd_wl->ufkbd;
+
+	ufkbd_input_position(ufkbd, id, x / 256, y / 256);
+}
+
+static const struct wl_touch_listener touch_listener = {
+	.down = on_touch_down,
+	.up = on_touch_up,
+	.motion = on_touch_motion,
+	.frame = ignore,
+	.cancel = ignore,
+	.shape = ignore,
+	.orientation = ignore,
+};
+
+static void on_seat_caps(void *data,
+			 struct wl_seat *seat,
+			 uint32_t capabilities)
+{
+	struct ufkbd_wl_input *ctx = data;
+
+	if (capabilities & WL_SEAT_CAPABILITY_TOUCH) {
+		ctx->touch = wl_seat_get_touch(seat);
+		if (ctx->touch == NULL)
+			return;
+
+		wl_touch_add_listener(ctx->touch, &touch_listener, ctx);
+	} else {
+		if (ctx->touch != NULL)
+			wl_touch_destroy(ctx->touch);
+
+		ctx->touch = NULL;
+	}
+
+	if (capabilities & WL_SEAT_CAPABILITY_POINTER) {
+		ctx->pointer = wl_seat_get_pointer(seat);
+		if (ctx->pointer == NULL)
+			return;
+
+		wl_pointer_add_listener(ctx->pointer, &pointer_listener, ctx);
+	} else {
+		if (ctx->pointer != NULL)
+			wl_pointer_destroy(ctx->pointer);
+
+		ctx->pointer = NULL;
+	}
+}
+
+static void on_seat_name(void *data,
+			 struct wl_seat *seat,
+			 const char *name)
+{
+	printf("wl: found seat %s\n", name);
+}
+
+struct wl_seat_listener seat_listener = {
+	.name = on_seat_name,
+	.capabilities = on_seat_caps,
+};
+
+static int try_create_virtual_keyboard(struct ufkbd_wl_input *ctx)
+{
+	struct ufkbd_keymap *keymap = ctx->ufkbd_wl->ufkbd->keymap;
+
+	if (ctx->manager == NULL)
+		return -EINVAL;
+
+	if (ctx->seat == NULL)
+		return -EINVAL;
+
+	if (ctx->kb != NULL)
+		return -EEXIST;
+
+	ctx->kb = zwp_virtual_keyboard_manager_v1_create_virtual_keyboard(ctx->manager,
+									  ctx->seat);
+	if (ctx->kb == NULL)
+		return -ENOMEM;
+
+	zwp_virtual_keyboard_v1_keymap(ctx->kb, WL_KEYBOARD_KEYMAP_FORMAT_XKB_V1,
+				       keymap->fd, keymap->size);
+
+	return 0;
+}
+
+static void on_global_vkman(void *data,
+			    struct wl_registry *reg,
+			    uint32_t name, uint32_t version)
+{
+	struct ufkbd_wl_input *ctx = data;
+
+	ctx->manager = wl_registry_bind(reg, name,
+					&zwp_virtual_keyboard_manager_v1_interface,
+					version);
+	if (ctx->manager == NULL)
+		return;
+
+	try_create_virtual_keyboard(ctx);
+}
+
+static void on_global_seat(void *data,
+			   struct wl_registry *reg,
+			   uint32_t name, uint32_t version)
+{
+	struct ufkbd_wl_input *ctx = data;
+
+	ctx->seat = wl_registry_bind(reg, name, &wl_seat_interface, version);
+	if (ctx->seat == NULL)
+		return;
+
+	wl_seat_add_listener(ctx->seat, &seat_listener, ctx);
+
+	try_create_virtual_keyboard(ctx);
+}
+
+int ufkbd_wl_input_send_key(struct ufkbd_wl_input *ctx, int key, bool repeat)
+{
+	if (ctx->kb == NULL)
+		return -ENODEV;
+
+	zwp_virtual_keyboard_v1_key(ctx->kb, 0, key, WL_KEYBOARD_KEY_STATE_PRESSED);
+
+	if (!repeat)
+		zwp_virtual_keyboard_v1_key(ctx->kb, 0, key, WL_KEYBOARD_KEY_STATE_RELEASED);
+
+	return 0;
+}
+
+int ufkbd_wl_input_send_mod(struct ufkbd_wl_input *ctx, enum ufkbd_modifier mod, bool pressed)
+{
+	int bit;
+
+	if (ctx->kb == NULL)
+		return -ENODEV;
+
+	if (mod == UFKBD_MOD_SHIFT)
+		bit = 0x1;
+	else if (mod == UFKBD_MOD_CTRL)
+		bit = 0x4;
+	else if (mod == UFKBD_MOD_ALT)
+		bit = 0x8;
+	else
+		bit = 0;
+
+	if (pressed)
+		ctx->mod_state |= bit;
+	else
+		ctx->mod_state &= ~bit;
+
+	zwp_virtual_keyboard_v1_modifiers(ctx->kb, ctx->mod_state, 0, 0, 0);
+
+	return 0;
+}
+
+int ufkbd_wl_input_init(struct ufkbd_input_wayland *ufkbd_wl,
+			struct ufkbd_wl_input **out)
+{
+	struct ufkbd_wl_input *ctx;
+	int ret;
+
+	ctx = calloc(1, sizeof(*ctx));
+	if (ctx == NULL)
+		return -errno;
+
+	ctx->ufkbd_wl = ufkbd_wl;
+
+	ctx->listener_seat.iface = &wl_seat_interface;
+	ctx->listener_seat.cb = on_global_seat;
+	ctx->listener_seat.data = ctx;
+
+	ret = ufkbd_wl_global_listener_add(ufkbd_wl, &ctx->listener_seat);
+	if (ret)
+		goto err;
+
+	ctx->listener_manager.iface = &zwp_virtual_keyboard_manager_v1_interface;
+	ctx->listener_manager.cb = on_global_vkman;
+	ctx->listener_manager.data = ctx;
+
+	ret = ufkbd_wl_global_listener_add(ufkbd_wl, &ctx->listener_manager);
+	if (ret)
+		goto err;
+
+	*out = ctx;
+
+	return 0;
+
+err:
+	free(ctx);
+	return ret;
+}
+
+void ufkbd_wl_input_uninit(struct ufkbd_wl_input *ctx)
+{
+	if (ctx->touch != NULL)
+		wl_touch_destroy(ctx->touch);
+
+	if (ctx->pointer != NULL)
+		wl_pointer_destroy(ctx->pointer);
+
+	if (ctx->seat != NULL)
+		wl_seat_destroy(ctx->seat);
+
+	if (ctx->kb != NULL)
+		zwp_virtual_keyboard_v1_destroy(ctx->kb);
+
+	if (ctx->manager != NULL)
+		zwp_virtual_keyboard_manager_v1_destroy(ctx->manager);
+
+	free(ctx);
+}

wayland/protocols/fractional-scale-v1.c

@@ -0,0 +1,73 @@
+/* Generated by wayland-scanner 1.22.0 */
+
+/*
+ * Copyright © 2022 Kenny Levinsen
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice (including the next
+ * paragraph) shall be included in all copies or substantial portions of the
+ * Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
+ * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
+ * DEALINGS IN THE SOFTWARE.
+ */
+
+#include <stdlib.h>
+#include <stdint.h>
+#include "wayland-util.h"
+
+#ifndef __has_attribute
+# define __has_attribute(x) 0  /* Compatibility with non-clang compilers. */
+#endif
+
+#if (__has_attribute(visibility) || defined(__GNUC__) && __GNUC__ >= 4)
+#define WL_PRIVATE __attribute__ ((visibility("hidden")))
+#else
+#define WL_PRIVATE
+#endif
+
+extern const struct wl_interface wl_surface_interface;
+extern const struct wl_interface wp_fractional_scale_v1_interface;
+
+static const struct wl_interface *fractional_scale_v1_types[] = {
+	NULL,
+	&wp_fractional_scale_v1_interface,
+	&wl_surface_interface,
+};
+
+static const struct wl_message wp_fractional_scale_manager_v1_requests[] = {
+	{ "destroy", "", fractional_scale_v1_types + 0 },
+	{ "get_fractional_scale", "no", fractional_scale_v1_types + 1 },
+};
+
+WL_PRIVATE const struct wl_interface wp_fractional_scale_manager_v1_interface = {
+	"wp_fractional_scale_manager_v1", 1,
+	2, wp_fractional_scale_manager_v1_requests,
+	0, NULL,
+};
+
+static const struct wl_message wp_fractional_scale_v1_requests[] = {
+	{ "destroy", "", fractional_scale_v1_types + 0 },
+};
+
+static const struct wl_message wp_fractional_scale_v1_events[] = {
+	{ "preferred_scale", "u", fractional_scale_v1_types + 0 },
+};
+
+WL_PRIVATE const struct wl_interface wp_fractional_scale_v1_interface = {
+	"wp_fractional_scale_v1", 1,
+	1, wp_fractional_scale_v1_requests,
+	1, wp_fractional_scale_v1_events,
+};
+

wayland/protocols/input-method-unstable-v2.c

@@ -0,0 +1,132 @@
+/* Generated by wayland-scanner 1.22.0 */
+
+/*
+ * Copyright © 2008-2011 Kristian Høgsberg
+ * Copyright © 2010-2011 Intel Corporation
+ * Copyright © 2012-2013 Collabora, Ltd.
+ * Copyright © 2012, 2013 Intel Corporation
+ * Copyright © 2015, 2016 Jan Arne Petersen
+ * Copyright © 2017, 2018 Red Hat, Inc.
+ * Copyright © 2018       Purism SPC
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice (including the next
+ * paragraph) shall be included in all copies or substantial portions of the
+ * Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
+ * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
+ * DEALINGS IN THE SOFTWARE.
+ */
+
+#include <stdlib.h>
+#include <stdint.h>
+#include "wayland-util.h"
+
+#ifndef __has_attribute
+# define __has_attribute(x) 0  /* Compatibility with non-clang compilers. */
+#endif
+
+#if (__has_attribute(visibility) || defined(__GNUC__) && __GNUC__ >= 4)
+#define WL_PRIVATE __attribute__ ((visibility("hidden")))
+#else
+#define WL_PRIVATE
+#endif
+
+extern const struct wl_interface wl_seat_interface;
+extern const struct wl_interface wl_surface_interface;
+extern const struct wl_interface zwp_input_method_keyboard_grab_v2_interface;
+extern const struct wl_interface zwp_input_method_v2_interface;
+extern const struct wl_interface zwp_input_popup_surface_v2_interface;
+
+static const struct wl_interface *input_method_unstable_v2_types[] = {
+	NULL,
+	NULL,
+	NULL,
+	NULL,
+	NULL,
+	&zwp_input_popup_surface_v2_interface,
+	&wl_surface_interface,
+	&zwp_input_method_keyboard_grab_v2_interface,
+	&wl_seat_interface,
+	&zwp_input_method_v2_interface,
+};
+
+static const struct wl_message zwp_input_method_v2_requests[] = {
+	{ "commit_string", "s", input_method_unstable_v2_types + 0 },
+	{ "set_preedit_string", "sii", input_method_unstable_v2_types + 0 },
+	{ "delete_surrounding_text", "uu", input_method_unstable_v2_types + 0 },
+	{ "commit", "u", input_method_unstable_v2_types + 0 },
+	{ "get_input_popup_surface", "no", input_method_unstable_v2_types + 5 },
+	{ "grab_keyboard", "n", input_method_unstable_v2_types + 7 },
+	{ "destroy", "", input_method_unstable_v2_types + 0 },
+};
+
+static const struct wl_message zwp_input_method_v2_events[] = {
+	{ "activate", "", input_method_unstable_v2_types + 0 },
+	{ "deactivate", "", input_method_unstable_v2_types + 0 },
+	{ "surrounding_text", "suu", input_method_unstable_v2_types + 0 },
+	{ "text_change_cause", "u", input_method_unstable_v2_types + 0 },
+	{ "content_type", "uu", input_method_unstable_v2_types + 0 },
+	{ "done", "", input_method_unstable_v2_types + 0 },
+	{ "unavailable", "", input_method_unstable_v2_types + 0 },
+};
+
+WL_PRIVATE const struct wl_interface zwp_input_method_v2_interface = {
+	"zwp_input_method_v2", 1,
+	7, zwp_input_method_v2_requests,
+	7, zwp_input_method_v2_events,
+};
+
+static const struct wl_message zwp_input_popup_surface_v2_requests[] = {
+	{ "destroy", "", input_method_unstable_v2_types + 0 },
+};
+
+static const struct wl_message zwp_input_popup_surface_v2_events[] = {
+	{ "text_input_rectangle", "iiii", input_method_unstable_v2_types + 0 },
+};
+
+WL_PRIVATE const struct wl_interface zwp_input_popup_surface_v2_interface = {
+	"zwp_input_popup_surface_v2", 1,
+	1, zwp_input_popup_surface_v2_requests,
+	1, zwp_input_popup_surface_v2_events,
+};
+
+static const struct wl_message zwp_input_method_keyboard_grab_v2_requests[] = {
+	{ "release", "", input_method_unstable_v2_types + 0 },
+};
+
+static const struct wl_message zwp_input_method_keyboard_grab_v2_events[] = {
+	{ "keymap", "uhu", input_method_unstable_v2_types + 0 },
+	{ "key", "uuuu", input_method_unstable_v2_types + 0 },
+	{ "modifiers", "uuuuu", input_method_unstable_v2_types + 0 },
+	{ "repeat_info", "ii", input_method_unstable_v2_types + 0 },
+};
+
+WL_PRIVATE const struct wl_interface zwp_input_method_keyboard_grab_v2_interface = {
+	"zwp_input_method_keyboard_grab_v2", 1,
+	1, zwp_input_method_keyboard_grab_v2_requests,
+	4, zwp_input_method_keyboard_grab_v2_events,
+};
+
+static const struct wl_message zwp_input_method_manager_v2_requests[] = {
+	{ "get_input_method", "on", input_method_unstable_v2_types + 8 },
+	{ "destroy", "", input_method_unstable_v2_types + 0 },
+};
+
+WL_PRIVATE const struct wl_interface zwp_input_method_manager_v2_interface = {
+	"zwp_input_method_manager_v2", 1,
+	2, zwp_input_method_manager_v2_requests,
+	0, NULL,
+};
+

wayland/protocols/input-method-unstable-v2.xml

@@ -0,0 +1,493 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<protocol name="input_method_unstable_v2">
+
+  <copyright>
+    Copyright © 2008-2011 Kristian Høgsberg
+    Copyright © 2010-2011 Intel Corporation
+    Copyright © 2012-2013 Collabora, Ltd.
+    Copyright © 2012, 2013 Intel Corporation
+    Copyright © 2015, 2016 Jan Arne Petersen
+    Copyright © 2017, 2018 Red Hat, Inc.
+    Copyright © 2018       Purism SPC
+
+    Permission is hereby granted, free of charge, to any person obtaining a
+    copy of this software and associated documentation files (the "Software"),
+    to deal in the Software without restriction, including without limitation
+    the rights to use, copy, modify, merge, publish, distribute, sublicense,
+    and/or sell copies of the Software, and to permit persons to whom the
+    Software is furnished to do so, subject to the following conditions:
+
+    The above copyright notice and this permission notice (including the next
+    paragraph) shall be included in all copies or substantial portions of the
+    Software.
+
+    THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+    IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+    FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
+    THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+    LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+    FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
+    DEALINGS IN THE SOFTWARE.
+  </copyright>
+
+  <description summary="Protocol for creating input methods">
+    This protocol allows applications to act as input methods for compositors.
+
+    An input method context is used to manage the state of the input method.
+
+    Text strings are UTF-8 encoded, their indices and lengths are in bytes.
+
+    This document adheres to the RFC 2119 when using words like "must",
+    "should", "may", etc.
+
+    Warning! The protocol described in this file is experimental and
+    backward incompatible changes may be made. Backward compatible changes
+    may be added together with the corresponding interface version bump.
+    Backward incompatible changes are done by bumping the version number in
+    the protocol and interface names and resetting the interface version.
+    Once the protocol is to be declared stable, the 'z' prefix and the
+    version number in the protocol and interface names are removed and the
+    interface version number is reset.
+
+    This protocol is copied from the Squeekboard and should be brought
+    up-to-date with it whenever upstream changes.
+  </description>
+
+  <interface name="zwp_input_method_v2" version="1">
+    <description summary="input method">
+      An input method object allows for clients to compose text.
+
+      The objects connects the client to a text input in an application, and
+      lets the client to serve as an input method for a seat.
+
+      The zwp_input_method_v2 object can occupy two distinct states: active and
+      inactive. In the active state, the object is associated to and
+      communicates with a text input. In the inactive state, there is no
+      associated text input, and the only communication is with the compositor.
+      Initially, the input method is in the inactive state.
+
+      Requests issued in the inactive state must be accepted by the compositor.
+      Because of the serial mechanism, and the state reset on activate event,
+      they will not have any effect on the state of the next text input.
+
+      There must be no more than one input method object per seat.
+    </description>
+
+    <event name="activate">
+      <description summary="input method has been requested">
+        Notification that a text input focused on this seat requested the input
+        method to be activated.
+
+        This event serves the purpose of providing the compositor with an
+        active input method.
+
+        This event resets all state associated with previous enable, disable,
+        surrounding_text, text_change_cause, and content_type events, as well
+        as the state associated with set_preedit_string, commit_string, and
+        delete_surrounding_text requests. In addition, it marks the
+        zwp_input_method_v2 object as active, and makes any existing
+        zwp_input_popup_surface_v2 objects visible.
+
+        The surrounding_text, and content_type events must follow before the
+        next done event if the text input supports the respective
+        functionality.
+
+        State set with this event is double-buffered. It will get applied on
+        the next zwp_input_method_v2.done event, and stay valid until changed.
+      </description>
+    </event>
+
+    <event name="deactivate">
+      <description summary="deactivate event">
+        Notification that no focused text input currently needs an active 
+        input method on this seat.
+
+        This event marks the zwp_input_method_v2 object as inactive. The
+        compositor must make all existing zwp_input_popup_surface_v2 objects
+        invisible until the next activate event.
+
+        State set with this event is double-buffered. It will get applied on
+        the next zwp_input_method_v2.done event, and stay valid until changed.
+      </description>
+    </event>
+
+    <event name="surrounding_text">
+      <description summary="surrounding text event">
+        Updates the surrounding plain text around the cursor, excluding the
+        preedit text.
+
+        If any preedit text is present, it is replaced with the cursor for the
+        purpose of this event.
+
+        The argument text is a buffer containing the preedit string, and must
+        include the cursor position, and the complete selection. It should
+        contain additional characters before and after these. There is a
+        maximum length of wayland messages, so text can not be longer than 4000
+        bytes.
+
+        cursor is the byte offset of the cursor within the text buffer.
+
+        anchor is the byte offset of the selection anchor within the text
+        buffer. If there is no selected text, anchor must be the same as
+        cursor.
+
+        If this event does not arrive before the first done event, the input
+        method may assume that the text input does not support this
+        functionality and ignore following surrounding_text events.
+
+        Values set with this event are double-buffered. They will get applied
+        and set to initial values on the next zwp_input_method_v2.done
+        event.
+
+        The initial state for affected fields is empty, meaning that the text
+        input does not support sending surrounding text. If the empty values
+        get applied, subsequent attempts to change them may have no effect.
+      </description>
+      <arg name="text" type="string"/>
+      <arg name="cursor" type="uint"/>
+      <arg name="anchor" type="uint"/>
+    </event>
+
+    <event name="text_change_cause">
+      <description summary="indicates the cause of surrounding text change">
+        Tells the input method why the text surrounding the cursor changed.
+
+        Whenever the client detects an external change in text, cursor, or
+        anchor position, it must issue this request to the compositor. This
+        request is intended to give the input method a chance to update the
+        preedit text in an appropriate way, e.g. by removing it when the user
+        starts typing with a keyboard.
+
+        cause describes the source of the change.
+
+        The value set with this event is double-buffered. It will get applied
+        and set to its initial value on the next zwp_input_method_v2.done
+        event.
+
+        The initial value of cause is input_method.
+      </description>
+      <arg name="cause" type="uint" enum="zwp_text_input_v3.change_cause"/>
+    </event>
+
+    <event name="content_type">
+      <description summary="content purpose and hint">
+        Indicates the content type and hint for the current
+        zwp_input_method_v2 instance.
+
+        Values set with this event are double-buffered. They will get applied
+        on the next zwp_input_method_v2.done event.
+
+        The initial value for hint is none, and the initial value for purpose
+        is normal.
+      </description>
+      <arg name="hint" type="uint" enum="zwp_text_input_v3.content_hint"/>
+      <arg name="purpose" type="uint" enum="zwp_text_input_v3.content_purpose"/>
+    </event>
+
+    <event name="done">
+      <description summary="apply state">
+        Atomically applies state changes recently sent to the client.
+
+        The done event establishes and updates the state of the client, and
+        must be issued after any changes to apply them.
+
+        Text input state (content purpose, content hint, surrounding text, and
+        change cause) is conceptually double-buffered within an input method
+        context.
+
+        Events modify the pending state, as opposed to the current state in use
+        by the input method. A done event atomically applies all pending state,
+        replacing the current state. After done, the new pending state is as
+        documented for each related request.
+
+        Events must be applied in the order of arrival.
+
+        Neither current nor pending state are modified unless noted otherwise.
+      </description>
+    </event>
+
+    <request name="commit_string">
+      <description summary="commit string">
+        Send the commit string text for insertion to the application.
+
+        Inserts a string at current cursor position (see commit event
+        sequence). The string to commit could be either just a single character
+        after a key press or the result of some composing.
+
+        The argument text is a buffer containing the string to insert. There is
+        a maximum length of wayland messages, so text can not be longer than
+        4000 bytes.
+
+        Values set with this event are double-buffered. They must be applied
+        and reset to initial on the next zwp_text_input_v3.commit request.
+
+        The initial value of text is an empty string.
+      </description>
+      <arg name="text" type="string"/>
+    </request>
+
+    <request name="set_preedit_string">
+      <description summary="pre-edit string">
+        Send the pre-edit string text to the application text input.
+
+        Place a new composing text (pre-edit) at the current cursor position.
+        Any previously set composing text must be removed. Any previously
+        existing selected text must be removed. The cursor is moved to a new
+        position within the preedit string.
+
+        The argument text is a buffer containing the preedit string. There is
+        a maximum length of wayland messages, so text can not be longer than
+        4000 bytes.
+
+        The arguments cursor_begin and cursor_end are counted in bytes relative
+        to the beginning of the submitted string buffer. Cursor should be
+        hidden by the text input when both are equal to -1.
+
+        cursor_begin indicates the beginning of the cursor. cursor_end
+        indicates the end of the cursor. It may be equal or different than
+        cursor_begin.
+
+        Values set with this event are double-buffered. They must be applied on
+        the next zwp_input_method_v2.commit event.
+
+        The initial value of text is an empty string. The initial value of
+        cursor_begin, and cursor_end are both 0.
+      </description>
+      <arg name="text" type="string"/>
+      <arg name="cursor_begin" type="int"/>
+      <arg name="cursor_end" type="int"/>
+    </request>
+
+    <request name="delete_surrounding_text">
+      <description summary="delete text">
+        Remove the surrounding text.
+
+        before_length and after_length are the number of bytes before and after
+        the current cursor index (excluding the preedit text) to delete.
+
+        If any preedit text is present, it is replaced with the cursor for the
+        purpose of this event. In effect before_length is counted from the
+        beginning of preedit text, and after_length from its end (see commit
+        event sequence).
+
+        Values set with this event are double-buffered. They must be applied
+        and reset to initial on the next zwp_input_method_v2.commit request.
+
+        The initial values of both before_length and after_length are 0.
+      </description>
+      <arg name="before_length" type="uint"/>
+      <arg name="after_length" type="uint"/>
+    </request>
+
+    <request name="commit">
+      <description summary="apply state">
+        Apply state changes from commit_string, set_preedit_string and
+        delete_surrounding_text requests.
+
+        The state relating to these events is double-buffered, and each one
+        modifies the pending state. This request replaces the current state
+        with the pending state.
+
+        The connected text input is expected to proceed by evaluating the
+        changes in the following order:
+
+        1. Replace existing preedit string with the cursor.
+        2. Delete requested surrounding text.
+        3. Insert commit string with the cursor at its end.
+        4. Calculate surrounding text to send.
+        5. Insert new preedit text in cursor position.
+        6. Place cursor inside preedit text.
+
+        The serial number reflects the last state of the zwp_input_method_v2
+        object known to the client. The value of the serial argument must be
+        equal to the number of done events already issued by that object. When
+        the compositor receives a commit request with a serial different than
+        the number of past done events, it must proceed as normal, except it
+        should not change the current state of the zwp_input_method_v2 object.
+      </description>
+      <arg name="serial" type="uint"/>
+    </request>
+
+    <request name="get_input_popup_surface">
+      <description summary="create popup surface">
+        Creates a new zwp_input_popup_surface_v2 object wrapping a given
+        surface.
+
+        The surface gets assigned the "input_popup" role. If the surface
+        already has an assigned role, the compositor must issue a protocol
+        error.
+      </description>
+      <arg name="id" type="new_id" interface="zwp_input_popup_surface_v2"/>
+      <arg name="surface" type="object" interface="wl_surface"/>
+    </request>
+
+    <request name="grab_keyboard">
+      <description summary="grab hardware keyboard">
+        Allow an input method to receive hardware keyboard input and process
+        key events to generate text events (with pre-edit) over the wire. This
+        allows input methods which compose multiple key events for inputting
+        text like it is done for CJK languages.
+
+        The compositor should send all keyboard events on the seat to the grab
+        holder via the returned wl_keyboard object. Nevertheless, the
+        compositor may decide not to forward any particular event. The
+        compositor must not further process any event after it has been
+        forwarded to the grab holder.
+
+        Releasing the resulting wl_keyboard object releases the grab.
+      </description>
+      <arg name="keyboard" type="new_id"
+        interface="zwp_input_method_keyboard_grab_v2"/>
+    </request>
+
+    <event name="unavailable">
+      <description summary="input method unavailable">
+        The input method ceased to be available.
+
+        The compositor must issue this event as the only event on the object if
+        there was another input_method object associated with the same seat at
+        the time of its creation.
+
+        The compositor must issue this request when the object is no longer
+        useable, e.g. due to seat removal.
+
+        The input method context becomes inert and should be destroyed after
+        deactivation is handled. Any further requests and events except for the
+        destroy request must be ignored.
+      </description>
+    </event>
+
+    <request name="destroy" type="destructor">
+      <description summary="destroy the text input">
+        Destroys the zwp_text_input_v2 object and any associated child
+        objects, i.e. zwp_input_popup_surface_v2 and
+        zwp_input_method_keyboard_grab_v2.
+      </description>
+    </request>
+  </interface>
+
+  <interface name="zwp_input_popup_surface_v2" version="1">
+    <description summary="popup surface">
+      This interface marks a surface as a popup for interacting with an input
+      method.
+
+      The compositor should place it near the active text input area. It must
+      be visible if and only if the input method is in the active state.
+
+      The client must not destroy the underlying wl_surface while the
+      zwp_input_popup_surface_v2 object exists.
+    </description>
+
+    <event name="text_input_rectangle">
+      <description summary="set text input area position">
+        Notify about the position of the area of the text input expressed as a
+        rectangle in surface local coordinates.
+
+        This is a hint to the input method telling it the relative position of
+        the text being entered.
+      </description>
+      <arg name="x" type="int"/>
+      <arg name="y" type="int"/>
+      <arg name="width" type="int"/>
+      <arg name="height" type="int"/>
+    </event>
+
+    <request name="destroy" type="destructor"/>
+  </interface>
+
+  <interface name="zwp_input_method_keyboard_grab_v2" version="1">
+    <!-- Closely follows wl_keyboard version 6 -->
+    <description summary="keyboard grab">
+      The zwp_input_method_keyboard_grab_v2 interface represents an exclusive
+      grab of the wl_keyboard interface associated with the seat.
+    </description>
+
+    <event name="keymap">
+      <description summary="keyboard mapping">
+        This event provides a file descriptor to the client which can be
+        memory-mapped to provide a keyboard mapping description.
+      </description>
+      <arg name="format" type="uint" enum="wl_keyboard.keymap_format"
+        summary="keymap format"/>
+      <arg name="fd" type="fd" summary="keymap file descriptor"/>
+      <arg name="size" type="uint" summary="keymap size, in bytes"/>
+    </event>
+
+    <event name="key">
+      <description summary="key event">
+        A key was pressed or released.
+        The time argument is a timestamp with millisecond granularity, with an
+        undefined base.
+      </description>
+      <arg name="serial" type="uint" summary="serial number of the key event"/>
+      <arg name="time" type="uint" summary="timestamp with millisecond granularity"/>
+      <arg name="key" type="uint" summary="key that produced the event"/>
+      <arg name="state" type="uint" enum="wl_keyboard.key_state"
+        summary="physical state of the key"/>
+    </event>
+
+    <event name="modifiers">
+      <description summary="modifier and group state">
+        Notifies clients that the modifier and/or group state has changed, and
+        it should update its local state.
+      </description>
+      <arg name="serial" type="uint" summary="serial number of the modifiers event"/>
+      <arg name="mods_depressed" type="uint" summary="depressed modifiers"/>
+      <arg name="mods_latched" type="uint" summary="latched modifiers"/>
+      <arg name="mods_locked" type="uint" summary="locked modifiers"/>
+      <arg name="group" type="uint" summary="keyboard layout"/>
+    </event>
+
+    <request name="release" type="destructor">
+      <description summary="release the grab object"/>
+    </request>
+
+    <event name="repeat_info">
+      <description summary="repeat rate and delay">
+        Informs the client about the keyboard's repeat rate and delay.
+
+        This event is sent as soon as the zwp_input_method_keyboard_grab_v2
+        object has been created, and is guaranteed to be received by the
+        client before any key press event.
+
+        Negative values for either rate or delay are illegal. A rate of zero
+        will disable any repeating (regardless of the value of delay).
+
+        This event can be sent later on as well with a new value if necessary,
+        so clients should continue listening for the event past the creation
+        of zwp_input_method_keyboard_grab_v2.
+      </description>
+      <arg name="rate" type="int"
+	   summary="the rate of repeating keys in characters per second"/>
+      <arg name="delay" type="int"
+	   summary="delay in milliseconds since key down until repeating starts"/>
+    </event>
+  </interface>
+
+  <interface name="zwp_input_method_manager_v2" version="1">
+    <description summary="input method manager">
+      The input method manager allows the client to become the input method on
+      a chosen seat.
+
+      No more than one input method must be associated with any seat at any
+      given time.
+    </description>
+
+    <request name="get_input_method">
+      <description summary="request an input method object">
+        Request a new input zwp_input_method_v2 object associated with a given
+        seat.
+      </description>
+      <arg name="seat" type="object" interface="wl_seat"/>
+      <arg name="input_method" type="new_id" interface="zwp_input_method_v2"/>
+    </request>
+
+    <request name="destroy" type="destructor">
+      <description summary="destroy the input method manager">
+        Destroys the zwp_input_method_manager_v2 object.
+
+        The zwp_input_method_v2 objects originating from it remain valid.
+      </description>
+    </request>
+  </interface>
+</protocol>

wayland/protocols/viewporter.c

@@ -0,0 +1,74 @@
+/* Generated by wayland-scanner 1.22.0 */
+
+/*
+ * Copyright © 2013-2016 Collabora, Ltd.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice (including the next
+ * paragraph) shall be included in all copies or substantial portions of the
+ * Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
+ * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
+ * DEALINGS IN THE SOFTWARE.
+ */
+
+#include <stdlib.h>
+#include <stdint.h>
+#include "wayland-util.h"
+
+#ifndef __has_attribute
+# define __has_attribute(x) 0  /* Compatibility with non-clang compilers. */
+#endif
+
+#if (__has_attribute(visibility) || defined(__GNUC__) && __GNUC__ >= 4)
+#define WL_PRIVATE __attribute__ ((visibility("hidden")))
+#else
+#define WL_PRIVATE
+#endif
+
+extern const struct wl_interface wl_surface_interface;
+extern const struct wl_interface wp_viewport_interface;
+
+static const struct wl_interface *viewporter_types[] = {
+	NULL,
+	NULL,
+	NULL,
+	NULL,
+	&wp_viewport_interface,
+	&wl_surface_interface,
+};
+
+static const struct wl_message wp_viewporter_requests[] = {
+	{ "destroy", "", viewporter_types + 0 },
+	{ "get_viewport", "no", viewporter_types + 4 },
+};
+
+WL_PRIVATE const struct wl_interface wp_viewporter_interface = {
+	"wp_viewporter", 1,
+	2, wp_viewporter_requests,
+	0, NULL,
+};
+
+static const struct wl_message wp_viewport_requests[] = {
+	{ "destroy", "", viewporter_types + 0 },
+	{ "set_source", "ffff", viewporter_types + 0 },
+	{ "set_destination", "ii", viewporter_types + 0 },
+};
+
+WL_PRIVATE const struct wl_interface wp_viewport_interface = {
+	"wp_viewport", 1,
+	3, wp_viewport_requests,
+	0, NULL,
+};
+

wayland/protocols/virtual-keyboard-unstable-v1.c

@@ -0,0 +1,77 @@
+/* Generated by wayland-scanner 1.22.0 */
+
+/*
+ * Copyright © 2008-2011  Kristian Høgsberg
+ * Copyright © 2010-2013  Intel Corporation
+ * Copyright © 2012-2013  Collabora, Ltd.
+ * Copyright © 2018       Purism SPC
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice (including the next
+ * paragraph) shall be included in all copies or substantial portions of the
+ * Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
+ * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
+ * DEALINGS IN THE SOFTWARE.
+ */
+
+#include <stdlib.h>
+#include <stdint.h>
+#include "wayland-util.h"
+
+#ifndef __has_attribute
+# define __has_attribute(x) 0  /* Compatibility with non-clang compilers. */
+#endif
+
+#if (__has_attribute(visibility) || defined(__GNUC__) && __GNUC__ >= 4)
+#define WL_PRIVATE __attribute__ ((visibility("hidden")))
+#else
+#define WL_PRIVATE
+#endif
+
+extern const struct wl_interface wl_seat_interface;
+extern const struct wl_interface zwp_virtual_keyboard_v1_interface;
+
+static const struct wl_interface *virtual_keyboard_unstable_v1_types[] = {
+	NULL,
+	NULL,
+	NULL,
+	NULL,
+	&wl_seat_interface,
+	&zwp_virtual_keyboard_v1_interface,
+};
+
+static const struct wl_message zwp_virtual_keyboard_v1_requests[] = {
+	{ "keymap", "uhu", virtual_keyboard_unstable_v1_types + 0 },
+	{ "key", "uuu", virtual_keyboard_unstable_v1_types + 0 },
+	{ "modifiers", "uuuu", virtual_keyboard_unstable_v1_types + 0 },
+	{ "destroy", "", virtual_keyboard_unstable_v1_types + 0 },
+};
+
+WL_PRIVATE const struct wl_interface zwp_virtual_keyboard_v1_interface = {
+	"zwp_virtual_keyboard_v1", 1,
+	4, zwp_virtual_keyboard_v1_requests,
+	0, NULL,
+};
+
+static const struct wl_message zwp_virtual_keyboard_manager_v1_requests[] = {
+	{ "create_virtual_keyboard", "on", virtual_keyboard_unstable_v1_types + 4 },
+};
+
+WL_PRIVATE const struct wl_interface zwp_virtual_keyboard_manager_v1_interface = {
+	"zwp_virtual_keyboard_manager_v1", 1,
+	1, zwp_virtual_keyboard_manager_v1_requests,
+	0, NULL,
+};
+

wayland/protocols/virtual-keyboard-unstable-v1.xml

@@ -0,0 +1,118 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<protocol name="virtual_keyboard_unstable_v1">
+  <copyright>
+    Copyright © 2008-2011  Kristian Høgsberg
+    Copyright © 2010-2013  Intel Corporation
+    Copyright © 2012-2013  Collabora, Ltd.
+    Copyright © 2018       Purism SPC
+
+    Permission is hereby granted, free of charge, to any person obtaining a
+    copy of this software and associated documentation files (the "Software"),
+    to deal in the Software without restriction, including without limitation
+    the rights to use, copy, modify, merge, publish, distribute, sublicense,
+    and/or sell copies of the Software, and to permit persons to whom the
+    Software is furnished to do so, subject to the following conditions:
+
+    The above copyright notice and this permission notice (including the next
+    paragraph) shall be included in all copies or substantial portions of the
+    Software.
+
+    THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+    IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+    FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
+    THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+    LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+    FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
+    DEALINGS IN THE SOFTWARE.
+  </copyright>
+
+  <description>
+    This protocol is copied from the Squeekboard and should be brought
+    up-to-date with it whenever upstream changes.
+  </description>
+
+  <interface name="zwp_virtual_keyboard_v1" version="1">
+    <description summary="virtual keyboard">
+      The virtual keyboard provides an application with requests which emulate
+      the behaviour of a physical keyboard.
+
+      This interface can be used by clients on its own to provide raw input
+      events, or it can accompany the input method protocol.
+    </description>
+
+    <request name="keymap">
+      <description summary="keyboard mapping">
+        Provide a file descriptor to the compositor which can be
+        memory-mapped to provide a keyboard mapping description.
+
+        Format carries a value from the keymap_format enumeration.
+      </description>
+      <arg name="format" type="uint" summary="keymap format"/>
+      <arg name="fd" type="fd" summary="keymap file descriptor"/>
+      <arg name="size" type="uint" summary="keymap size, in bytes"/>
+    </request>
+    
+    <enum name="error">
+      <entry name="no_keymap" value="0" summary="No keymap was set"/>
+    </enum>
+
+    <request name="key">
+      <description summary="key event">
+        A key was pressed or released.
+        The time argument is a timestamp with millisecond granularity, with an
+        undefined base. All requests regarding a single object must share the
+        same clock.
+
+        Keymap must be set before issuing this request.
+
+        State carries a value from the key_state enumeration.
+      </description>
+      <arg name="time" type="uint" summary="timestamp with millisecond granularity"/>
+      <arg name="key" type="uint" summary="key that produced the event"/>
+      <arg name="state" type="uint" summary="physical state of the key"/>
+    </request>
+
+    <request name="modifiers">
+      <description summary="modifier and group state">
+        Notifies the compositor that the modifier and/or group state has
+        changed, and it should update state.
+
+        The client should use wl_keyboard.modifiers event to synchronize its
+        internal state with seat state.
+
+        Keymap must be set before issuing this request.
+      </description>
+      <arg name="mods_depressed" type="uint" summary="depressed modifiers"/>
+      <arg name="mods_latched" type="uint" summary="latched modifiers"/>
+      <arg name="mods_locked" type="uint" summary="locked modifiers"/>
+      <arg name="group" type="uint" summary="keyboard layout"/>
+    </request>
+
+    <request name="destroy" type="destructor" since="1">
+      <description summary="destroy the virtual keyboard keyboard object"/>
+    </request>
+  </interface>
+
+  <interface name="zwp_virtual_keyboard_manager_v1" version="1">
+    <description summary="virtual keyboard manager">
+      A virtual keyboard manager allows an application to provide keyboard
+      input events as if they came from a physical keyboard.
+    </description>
+
+    <enum name="error">
+      <entry name="unauthorized" value="0" summary="client not authorized to use the interface"/>
+    </enum>
+
+    <request name="create_virtual_keyboard">
+      <description summary="Create a new virtual keyboard">
+        Creates a new virtual keyboard associated to a seat.
+
+        If the compositor enables a keyboard to perform arbitrary actions, it
+        should present an error when an untrusted client requests a new
+        keyboard.
+      </description>
+      <arg name="seat" type="object" interface="wl_seat"/>
+      <arg name="id" type="new_id" interface="zwp_virtual_keyboard_v1"/>
+    </request>
+  </interface>
+</protocol>

wayland/protocols/wlr-layer-shell-unstable-v1.c

@@ -0,0 +1,93 @@
+/* Generated by wayland-scanner 1.22.0 */
+
+/*
+ * Copyright © 2017 Drew DeVault
+ *
+ * Permission to use, copy, modify, distribute, and sell this
+ * software and its documentation for any purpose is hereby granted
+ * without fee, provided that the above copyright notice appear in
+ * all copies and that both that copyright notice and this permission
+ * notice appear in supporting documentation, and that the name of
+ * the copyright holders not be used in advertising or publicity
+ * pertaining to distribution of the software without specific,
+ * written prior permission.  The copyright holders make no
+ * representations about the suitability of this software for any
+ * purpose.  It is provided "as is" without express or implied
+ * warranty.
+ *
+ * THE COPYRIGHT HOLDERS DISCLAIM ALL WARRANTIES WITH REGARD TO THIS
+ * SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND
+ * FITNESS, IN NO EVENT SHALL THE COPYRIGHT HOLDERS BE LIABLE FOR ANY
+ * SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN
+ * AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION,
+ * ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF
+ * THIS SOFTWARE.
+ */
+
+#include <stdlib.h>
+#include <stdint.h>
+#include "wayland-util.h"
+
+#ifndef __has_attribute
+# define __has_attribute(x) 0  /* Compatibility with non-clang compilers. */
+#endif
+
+#if (__has_attribute(visibility) || defined(__GNUC__) && __GNUC__ >= 4)
+#define WL_PRIVATE __attribute__ ((visibility("hidden")))
+#else
+#define WL_PRIVATE
+#endif
+
+extern const struct wl_interface wl_output_interface;
+extern const struct wl_interface wl_surface_interface;
+extern const struct wl_interface xdg_popup_interface;
+extern const struct wl_interface zwlr_layer_surface_v1_interface;
+
+static const struct wl_interface *wlr_layer_shell_unstable_v1_types[] = {
+	NULL,
+	NULL,
+	NULL,
+	NULL,
+	&zwlr_layer_surface_v1_interface,
+	&wl_surface_interface,
+	&wl_output_interface,
+	NULL,
+	NULL,
+	&xdg_popup_interface,
+};
+
+static const struct wl_message zwlr_layer_shell_v1_requests[] = {
+	{ "get_layer_surface", "no?ous", wlr_layer_shell_unstable_v1_types + 4 },
+	{ "destroy", "3", wlr_layer_shell_unstable_v1_types + 0 },
+};
+
+WL_PRIVATE const struct wl_interface zwlr_layer_shell_v1_interface = {
+	"zwlr_layer_shell_v1", 4,
+	2, zwlr_layer_shell_v1_requests,
+	0, NULL,
+};
+
+static const struct wl_message zwlr_layer_surface_v1_requests[] = {
+	{ "set_size", "uu", wlr_layer_shell_unstable_v1_types + 0 },
+	{ "set_anchor", "u", wlr_layer_shell_unstable_v1_types + 0 },
+	{ "set_exclusive_zone", "i", wlr_layer_shell_unstable_v1_types + 0 },
+	{ "set_margin", "iiii", wlr_layer_shell_unstable_v1_types + 0 },
+	{ "set_keyboard_interactivity", "u", wlr_layer_shell_unstable_v1_types + 0 },
+	{ "get_popup", "o", wlr_layer_shell_unstable_v1_types + 9 },
+	{ "ack_configure", "u", wlr_layer_shell_unstable_v1_types + 0 },
+	{ "destroy", "", wlr_layer_shell_unstable_v1_types + 0 },
+	{ "set_layer", "2u", wlr_layer_shell_unstable_v1_types + 0 },
+};
+
+static const struct wl_message zwlr_layer_surface_v1_events[] = {
+	{ "configure", "uuu", wlr_layer_shell_unstable_v1_types + 0 },
+	{ "closed", "", wlr_layer_shell_unstable_v1_types + 0 },
+};
+
+WL_PRIVATE const struct wl_interface zwlr_layer_surface_v1_interface = {
+	"zwlr_layer_surface_v1", 4,
+	9, zwlr_layer_surface_v1_requests,
+	2, zwlr_layer_surface_v1_events,
+};
+

wayland/protocols/wlr-layer-shell-unstable-v1.xml

@@ -0,0 +1,390 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<protocol name="wlr_layer_shell_unstable_v1">
+  <copyright>
+    Copyright © 2017 Drew DeVault
+
+    Permission to use, copy, modify, distribute, and sell this
+    software and its documentation for any purpose is hereby granted
+    without fee, provided that the above copyright notice appear in
+    all copies and that both that copyright notice and this permission
+    notice appear in supporting documentation, and that the name of
+    the copyright holders not be used in advertising or publicity
+    pertaining to distribution of the software without specific,
+    written prior permission.  The copyright holders make no
+    representations about the suitability of this software for any
+    purpose.  It is provided "as is" without express or implied
+    warranty.
+
+    THE COPYRIGHT HOLDERS DISCLAIM ALL WARRANTIES WITH REGARD TO THIS
+    SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND
+    FITNESS, IN NO EVENT SHALL THE COPYRIGHT HOLDERS BE LIABLE FOR ANY
+    SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+    WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN
+    AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION,
+    ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF
+    THIS SOFTWARE.
+  </copyright>
+
+  <interface name="zwlr_layer_shell_v1" version="4">
+    <description summary="create surfaces that are layers of the desktop">
+      Clients can use this interface to assign the surface_layer role to
+      wl_surfaces. Such surfaces are assigned to a "layer" of the output and
+      rendered with a defined z-depth respective to each other. They may also be
+      anchored to the edges and corners of a screen and specify input handling
+      semantics. This interface should be suitable for the implementation of
+      many desktop shell components, and a broad number of other applications
+      that interact with the desktop.
+    </description>
+
+    <request name="get_layer_surface">
+      <description summary="create a layer_surface from a surface">
+        Create a layer surface for an existing surface. This assigns the role of
+        layer_surface, or raises a protocol error if another role is already
+        assigned.
+
+        Creating a layer surface from a wl_surface which has a buffer attached
+        or committed is a client error, and any attempts by a client to attach
+        or manipulate a buffer prior to the first layer_surface.configure call
+        must also be treated as errors.
+
+        After creating a layer_surface object and setting it up, the client
+        must perform an initial commit without any buffer attached.
+        The compositor will reply with a layer_surface.configure event.
+        The client must acknowledge it and is then allowed to attach a buffer
+        to map the surface.
+
+        You may pass NULL for output to allow the compositor to decide which
+        output to use. Generally this will be the one that the user most
+        recently interacted with.
+
+        Clients can specify a namespace that defines the purpose of the layer
+        surface.
+      </description>
+      <arg name="id" type="new_id" interface="zwlr_layer_surface_v1"/>
+      <arg name="surface" type="object" interface="wl_surface"/>
+      <arg name="output" type="object" interface="wl_output" allow-null="true"/>
+      <arg name="layer" type="uint" enum="layer" summary="layer to add this surface to"/>
+      <arg name="namespace" type="string" summary="namespace for the layer surface"/>
+    </request>
+
+    <enum name="error">
+      <entry name="role" value="0" summary="wl_surface has another role"/>
+      <entry name="invalid_layer" value="1" summary="layer value is invalid"/>
+      <entry name="already_constructed" value="2" summary="wl_surface has a buffer attached or committed"/>
+    </enum>
+
+    <enum name="layer">
+      <description summary="available layers for surfaces">
+        These values indicate which layers a surface can be rendered in. They
+        are ordered by z depth, bottom-most first. Traditional shell surfaces
+        will typically be rendered between the bottom and top layers.
+        Fullscreen shell surfaces are typically rendered at the top layer.
+        Multiple surfaces can share a single layer, and ordering within a
+        single layer is undefined.
+      </description>
+
+      <entry name="background" value="0"/>
+      <entry name="bottom" value="1"/>
+      <entry name="top" value="2"/>
+      <entry name="overlay" value="3"/>
+    </enum>
+
+    <!-- Version 3 additions -->
+
+    <request name="destroy" type="destructor" since="3">
+      <description summary="destroy the layer_shell object">
+        This request indicates that the client will not use the layer_shell
+        object any more. Objects that have been created through this instance
+        are not affected.
+      </description>
+    </request>
+  </interface>
+
+  <interface name="zwlr_layer_surface_v1" version="4">
+    <description summary="layer metadata interface">
+      An interface that may be implemented by a wl_surface, for surfaces that
+      are designed to be rendered as a layer of a stacked desktop-like
+      environment.
+
+      Layer surface state (layer, size, anchor, exclusive zone,
+      margin, interactivity) is double-buffered, and will be applied at the
+      time wl_surface.commit of the corresponding wl_surface is called.
+
+      Attaching a null buffer to a layer surface unmaps it.
+
+      Unmapping a layer_surface means that the surface cannot be shown by the
+      compositor until it is explicitly mapped again. The layer_surface
+      returns to the state it had right after layer_shell.get_layer_surface.
+      The client can re-map the surface by performing a commit without any
+      buffer attached, waiting for a configure event and handling it as usual.
+    </description>
+
+    <request name="set_size">
+      <description summary="sets the size of the surface">
+        Sets the size of the surface in surface-local coordinates. The
+        compositor will display the surface centered with respect to its
+        anchors.
+
+        If you pass 0 for either value, the compositor will assign it and
+        inform you of the assignment in the configure event. You must set your
+        anchor to opposite edges in the dimensions you omit; not doing so is a
+        protocol error. Both values are 0 by default.
+
+        Size is double-buffered, see wl_surface.commit.
+      </description>
+      <arg name="width" type="uint"/>
+      <arg name="height" type="uint"/>
+    </request>
+
+    <request name="set_anchor">
+      <description summary="configures the anchor point of the surface">
+        Requests that the compositor anchor the surface to the specified edges
+        and corners. If two orthogonal edges are specified (e.g. 'top' and
+        'left'), then the anchor point will be the intersection of the edges
+        (e.g. the top left corner of the output); otherwise the anchor point
+        will be centered on that edge, or in the center if none is specified.
+
+        Anchor is double-buffered, see wl_surface.commit.
+      </description>
+      <arg name="anchor" type="uint" enum="anchor"/>
+    </request>
+
+    <request name="set_exclusive_zone">
+      <description summary="configures the exclusive geometry of this surface">
+        Requests that the compositor avoids occluding an area with other
+        surfaces. The compositor's use of this information is
+        implementation-dependent - do not assume that this region will not
+        actually be occluded.
+
+        A positive value is only meaningful if the surface is anchored to one
+        edge or an edge and both perpendicular edges. If the surface is not
+        anchored, anchored to only two perpendicular edges (a corner), anchored
+        to only two parallel edges or anchored to all edges, a positive value
+        will be treated the same as zero.
+
+        A positive zone is the distance from the edge in surface-local
+        coordinates to consider exclusive.
+
+        Surfaces that do not wish to have an exclusive zone may instead specify
+        how they should interact with surfaces that do. If set to zero, the
+        surface indicates that it would like to be moved to avoid occluding
+        surfaces with a positive exclusive zone. If set to -1, the surface
+        indicates that it would not like to be moved to accommodate for other
+        surfaces, and the compositor should extend it all the way to the edges
+        it is anchored to.
+
+        For example, a panel might set its exclusive zone to 10, so that
+        maximized shell surfaces are not shown on top of it. A notification
+        might set its exclusive zone to 0, so that it is moved to avoid
+        occluding the panel, but shell surfaces are shown underneath it. A
+        wallpaper or lock screen might set their exclusive zone to -1, so that
+        they stretch below or over the panel.
+
+        The default value is 0.
+
+        Exclusive zone is double-buffered, see wl_surface.commit.
+      </description>
+      <arg name="zone" type="int"/>
+    </request>
+
+    <request name="set_margin">
+      <description summary="sets a margin from the anchor point">
+        Requests that the surface be placed some distance away from the anchor
+        point on the output, in surface-local coordinates. Setting this value
+        for edges you are not anchored to has no effect.
+
+        The exclusive zone includes the margin.
+
+        Margin is double-buffered, see wl_surface.commit.
+      </description>
+      <arg name="top" type="int"/>
+      <arg name="right" type="int"/>
+      <arg name="bottom" type="int"/>
+      <arg name="left" type="int"/>
+    </request>
+
+    <enum name="keyboard_interactivity">
+      <description summary="types of keyboard interaction possible for a layer shell surface">
+        Types of keyboard interaction possible for layer shell surfaces. The
+        rationale for this is twofold: (1) some applications are not interested
+        in keyboard events and not allowing them to be focused can improve the
+        desktop experience; (2) some applications will want to take exclusive
+        keyboard focus.
+      </description>
+
+      <entry name="none" value="0">
+        <description summary="no keyboard focus is possible">
+          This value indicates that this surface is not interested in keyboard
+          events and the compositor should never assign it the keyboard focus.
+
+          This is the default value, set for newly created layer shell surfaces.
+
+          This is useful for e.g. desktop widgets that display information or
+          only have interaction with non-keyboard input devices.
+        </description>
+      </entry>
+      <entry name="exclusive" value="1">
+        <description summary="request exclusive keyboard focus">
+          Request exclusive keyboard focus if this surface is above the shell surface layer.
+
+          For the top and overlay layers, the seat will always give
+          exclusive keyboard focus to the top-most layer which has keyboard
+          interactivity set to exclusive. If this layer contains multiple
+          surfaces with keyboard interactivity set to exclusive, the compositor
+          determines the one receiving keyboard events in an implementation-
+          defined manner. In this case, no guarantee is made when this surface
+          will receive keyboard focus (if ever).
+
+          For the bottom and background layers, the compositor is allowed to use
+          normal focus semantics.
+
+          This setting is mainly intended for applications that need to ensure
+          they receive all keyboard events, such as a lock screen or a password
+          prompt.
+        </description>
+      </entry>
+      <entry name="on_demand" value="2" since="4">
+        <description summary="request regular keyboard focus semantics">
+          This requests the compositor to allow this surface to be focused and
+          unfocused by the user in an implementation-defined manner. The user
+          should be able to unfocus this surface even regardless of the layer
+          it is on.
+
+          Typically, the compositor will want to use its normal mechanism to
+          manage keyboard focus between layer shell surfaces with this setting
+          and regular toplevels on the desktop layer (e.g. click to focus).
+          Nevertheless, it is possible for a compositor to require a special
+          interaction to focus or unfocus layer shell surfaces (e.g. requiring
+          a click even if focus follows the mouse normally, or providing a
+          keybinding to switch focus between layers).
+
+          This setting is mainly intended for desktop shell components (e.g.
+          panels) that allow keyboard interaction. Using this option can allow
+          implementing a desktop shell that can be fully usable without the
+          mouse.
+        </description>
+      </entry>
+    </enum>
+
+    <request name="set_keyboard_interactivity">
+      <description summary="requests keyboard events">
+        Set how keyboard events are delivered to this surface. By default,
+        layer shell surfaces do not receive keyboard events; this request can
+        be used to change this.
+
+        This setting is inherited by child surfaces set by the get_popup
+        request.
+
+        Layer surfaces receive pointer, touch, and tablet events normally. If
+        you do not want to receive them, set the input region on your surface
+        to an empty region.
+
+        Keyboard interactivity is double-buffered, see wl_surface.commit.
+      </description>
+      <arg name="keyboard_interactivity" type="uint" enum="keyboard_interactivity"/>
+    </request>
+
+    <request name="get_popup">
+      <description summary="assign this layer_surface as an xdg_popup parent">
+        This assigns an xdg_popup's parent to this layer_surface.  This popup
+        should have been created via xdg_surface::get_popup with the parent set
+        to NULL, and this request must be invoked before committing the popup's
+        initial state.
+
+        See the documentation of xdg_popup for more details about what an
+        xdg_popup is and how it is used.
+      </description>
+      <arg name="popup" type="object" interface="xdg_popup"/>
+    </request>
+
+    <request name="ack_configure">
+      <description summary="ack a configure event">
+        When a configure event is received, if a client commits the
+        surface in response to the configure event, then the client
+        must make an ack_configure request sometime before the commit
+        request, passing along the serial of the configure event.
+
+        If the client receives multiple configure events before it
+        can respond to one, it only has to ack the last configure event.
+
+        A client is not required to commit immediately after sending
+        an ack_configure request - it may even ack_configure several times
+        before its next surface commit.
+
+        A client may send multiple ack_configure requests before committing, but
+        only the last request sent before a commit indicates which configure
+        event the client really is responding to.
+      </description>
+      <arg name="serial" type="uint" summary="the serial from the configure event"/>
+    </request>
+
+    <request name="destroy" type="destructor">
+      <description summary="destroy the layer_surface">
+        This request destroys the layer surface.
+      </description>
+    </request>
+
+    <event name="configure">
+      <description summary="suggest a surface change">
+        The configure event asks the client to resize its surface.
+
+        Clients should arrange their surface for the new states, and then send
+        an ack_configure request with the serial sent in this configure event at
+        some point before committing the new surface.
+
+        The client is free to dismiss all but the last configure event it
+        received.
+
+        The width and height arguments specify the size of the window in
+        surface-local coordinates.
+
+        The size is a hint, in the sense that the client is free to ignore it if
+        it doesn't resize, pick a smaller size (to satisfy aspect ratio or
+        resize in steps of NxM pixels). If the client picks a smaller size and
+        is anchored to two opposite anchors (e.g. 'top' and 'bottom'), the
+        surface will be centered on this axis.
+
+        If the width or height arguments are zero, it means the client should
+        decide its own window dimension.
+      </description>
+      <arg name="serial" type="uint"/>
+      <arg name="width" type="uint"/>
+      <arg name="height" type="uint"/>
+    </event>
+
+    <event name="closed">
+      <description summary="surface should be closed">
+        The closed event is sent by the compositor when the surface will no
+        longer be shown. The output may have been destroyed or the user may
+        have asked for it to be removed. Further changes to the surface will be
+        ignored. The client should destroy the resource after receiving this
+        event, and create a new surface if they so choose.
+      </description>
+    </event>
+
+    <enum name="error">
+      <entry name="invalid_surface_state" value="0" summary="provided surface state is invalid"/>
+      <entry name="invalid_size" value="1" summary="size is invalid"/>
+      <entry name="invalid_anchor" value="2" summary="anchor bitfield is invalid"/>
+      <entry name="invalid_keyboard_interactivity" value="3" summary="keyboard interactivity is invalid"/>
+    </enum>
+
+    <enum name="anchor" bitfield="true">
+      <entry name="top" value="1" summary="the top edge of the anchor rectangle"/>
+      <entry name="bottom" value="2" summary="the bottom edge of the anchor rectangle"/>
+      <entry name="left" value="4" summary="the left edge of the anchor rectangle"/>
+      <entry name="right" value="8" summary="the right edge of the anchor rectangle"/>
+    </enum>
+
+    <!-- Version 2 additions -->
+
+    <request name="set_layer" since="2">
+      <description summary="change the layer of the surface">
+        Change the layer that the surface is rendered on.
+
+        Layer is double-buffered, see wl_surface.commit.
+      </description>
+      <arg name="layer" type="uint" enum="zwlr_layer_shell_v1.layer" summary="layer to move this surface to"/>
+    </request>
+  </interface>
+</protocol>

wayland/protocols/xdg-shell.c

@@ -0,0 +1,183 @@
+/* Generated by wayland-scanner 1.22.0 */
+
+/*
+ * Copyright © 2008-2013 Kristian Høgsberg
+ * Copyright © 2013      Rafael Antognolli
+ * Copyright © 2013      Jasper St. Pierre
+ * Copyright © 2010-2013 Intel Corporation
+ * Copyright © 2015-2017 Samsung Electronics Co., Ltd
+ * Copyright © 2015-2017 Red Hat Inc.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice (including the next
+ * paragraph) shall be included in all copies or substantial portions of the
+ * Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
+ * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
+ * DEALINGS IN THE SOFTWARE.
+ */
+
+#include <stdlib.h>
+#include <stdint.h>
+#include "wayland-util.h"
+
+#ifndef __has_attribute
+# define __has_attribute(x) 0  /* Compatibility with non-clang compilers. */
+#endif
+
+#if (__has_attribute(visibility) || defined(__GNUC__) && __GNUC__ >= 4)
+#define WL_PRIVATE __attribute__ ((visibility("hidden")))
+#else
+#define WL_PRIVATE
+#endif
+
+extern const struct wl_interface wl_output_interface;
+extern const struct wl_interface wl_seat_interface;
+extern const struct wl_interface wl_surface_interface;
+extern const struct wl_interface xdg_popup_interface;
+extern const struct wl_interface xdg_positioner_interface;
+extern const struct wl_interface xdg_surface_interface;
+extern const struct wl_interface xdg_toplevel_interface;
+
+static const struct wl_interface *xdg_shell_types[] = {
+	NULL,
+	NULL,
+	NULL,
+	NULL,
+	&xdg_positioner_interface,
+	&xdg_surface_interface,
+	&wl_surface_interface,
+	&xdg_toplevel_interface,
+	&xdg_popup_interface,
+	&xdg_surface_interface,
+	&xdg_positioner_interface,
+	&xdg_toplevel_interface,
+	&wl_seat_interface,
+	NULL,
+	NULL,
+	NULL,
+	&wl_seat_interface,
+	NULL,
+	&wl_seat_interface,
+	NULL,
+	NULL,
+	&wl_output_interface,
+	&wl_seat_interface,
+	NULL,
+	&xdg_positioner_interface,
+	NULL,
+};
+
+static const struct wl_message xdg_wm_base_requests[] = {
+	{ "destroy", "", xdg_shell_types + 0 },
+	{ "create_positioner", "n", xdg_shell_types + 4 },
+	{ "get_xdg_surface", "no", xdg_shell_types + 5 },
+	{ "pong", "u", xdg_shell_types + 0 },
+};
+
+static const struct wl_message xdg_wm_base_events[] = {
+	{ "ping", "u", xdg_shell_types + 0 },
+};
+
+WL_PRIVATE const struct wl_interface xdg_wm_base_interface = {
+	"xdg_wm_base", 6,
+	4, xdg_wm_base_requests,
+	1, xdg_wm_base_events,
+};
+
+static const struct wl_message xdg_positioner_requests[] = {
+	{ "destroy", "", xdg_shell_types + 0 },
+	{ "set_size", "ii", xdg_shell_types + 0 },
+	{ "set_anchor_rect", "iiii", xdg_shell_types + 0 },
+	{ "set_anchor", "u", xdg_shell_types + 0 },
+	{ "set_gravity", "u", xdg_shell_types + 0 },
+	{ "set_constraint_adjustment", "u", xdg_shell_types + 0 },
+	{ "set_offset", "ii", xdg_shell_types + 0 },
+	{ "set_reactive", "3", xdg_shell_types + 0 },
+	{ "set_parent_size", "3ii", xdg_shell_types + 0 },
+	{ "set_parent_configure", "3u", xdg_shell_types + 0 },
+};
+
+WL_PRIVATE const struct wl_interface xdg_positioner_interface = {
+	"xdg_positioner", 6,
+	10, xdg_positioner_requests,
+	0, NULL,
+};
+
+static const struct wl_message xdg_surface_requests[] = {
+	{ "destroy", "", xdg_shell_types + 0 },
+	{ "get_toplevel", "n", xdg_shell_types + 7 },
+	{ "get_popup", "n?oo", xdg_shell_types + 8 },
+	{ "set_window_geometry", "iiii", xdg_shell_types + 0 },
+	{ "ack_configure", "u", xdg_shell_types + 0 },
+};
+
+static const struct wl_message xdg_surface_events[] = {
+	{ "configure", "u", xdg_shell_types + 0 },
+};
+
+WL_PRIVATE const struct wl_interface xdg_surface_interface = {
+	"xdg_surface", 6,
+	5, xdg_surface_requests,
+	1, xdg_surface_events,
+};
+
+static const struct wl_message xdg_toplevel_requests[] = {
+	{ "destroy", "", xdg_shell_types + 0 },
+	{ "set_parent", "?o", xdg_shell_types + 11 },
+	{ "set_title", "s", xdg_shell_types + 0 },
+	{ "set_app_id", "s", xdg_shell_types + 0 },
+	{ "show_window_menu", "ouii", xdg_shell_types + 12 },
+	{ "move", "ou", xdg_shell_types + 16 },
+	{ "resize", "ouu", xdg_shell_types + 18 },
+	{ "set_max_size", "ii", xdg_shell_types + 0 },
+	{ "set_min_size", "ii", xdg_shell_types + 0 },
+	{ "set_maximized", "", xdg_shell_types + 0 },
+	{ "unset_maximized", "", xdg_shell_types + 0 },
+	{ "set_fullscreen", "?o", xdg_shell_types + 21 },
+	{ "unset_fullscreen", "", xdg_shell_types + 0 },
+	{ "set_minimized", "", xdg_shell_types + 0 },
+};
+
+static const struct wl_message xdg_toplevel_events[] = {
+	{ "configure", "iia", xdg_shell_types + 0 },
+	{ "close", "", xdg_shell_types + 0 },
+	{ "configure_bounds", "4ii", xdg_shell_types + 0 },
+	{ "wm_capabilities", "5a", xdg_shell_types + 0 },
+};
+
+WL_PRIVATE const struct wl_interface xdg_toplevel_interface = {
+	"xdg_toplevel", 6,
+	14, xdg_toplevel_requests,
+	4, xdg_toplevel_events,
+};
+
+static const struct wl_message xdg_popup_requests[] = {
+	{ "destroy", "", xdg_shell_types + 0 },
+	{ "grab", "ou", xdg_shell_types + 22 },
+	{ "reposition", "3ou", xdg_shell_types + 24 },
+};
+
+static const struct wl_message xdg_popup_events[] = {
+	{ "configure", "iiii", xdg_shell_types + 0 },
+	{ "popup_done", "", xdg_shell_types + 0 },
+	{ "repositioned", "3u", xdg_shell_types + 0 },
+};
+
+WL_PRIVATE const struct wl_interface xdg_popup_interface = {
+	"xdg_popup", 6,
+	3, xdg_popup_requests,
+	3, xdg_popup_events,
+};
+

wayland/surface.c

@@ -0,0 +1,282 @@
+// SPDX-License-Identifier: GPL-3.0-only
+/*
+ * Wayland buffer manager and surface.
+ *
+ * Copyright (c) 2024, Richard Acayan. All rights reserved.
+ */
+
+#include <errno.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <wayland-client-protocol.h>
+
+#include "graphics.h"
+#include "ufkbd.h"
+#include "layout.h"
+#include "wayland.h"
+#include "wayland/viewporter.h"
+#include "wayland/wlr-layer-shell-unstable-v1.h"
+
+extern struct ufkbd_driver ufkbd_wayland;
+
+static int ufkbd_wl_surface_resize_buffers(struct ufkbd_wl_surface *ctx,
+					   uint32_t width, uint32_t height);
+
+static void on_surface_configure(void *data,
+				 struct zwlr_layer_surface_v1 *surface,
+				 uint32_t serial,
+				 uint32_t width,
+				 uint32_t height)
+{
+	struct ufkbd_wl_surface *ctx = data;
+	struct ufkbd_input_wayland *ufkbd_wl = ctx->ufkbd_wl;
+	struct ufkbd_ctx *ufkbd = ufkbd_wl->ufkbd;
+
+	zwlr_layer_surface_v1_ack_configure(surface, serial);
+
+	wp_viewport_set_source(ctx->vp, 0, 0, width * 256 * ctx->scale,
+			       height * 256 * ctx->scale);
+	wp_viewport_set_destination(ctx->vp, width, height);
+
+	ufkbd_wl_surface_resize_buffers(ctx, width, height);
+
+	ufkbd_layout_resize(ufkbd->layout, width, height);
+	ufkbd_graphics_draw_layout(ufkbd, ufkbd_wl->ufkbd->layout,
+				   width, height);
+}
+
+static void on_surface_closed(void *data,
+			      struct zwlr_layer_surface_v1 *toplev)
+{
+	struct ufkbd_wl_surface *ctx = data;
+	struct ufkbd_input_wayland *ufkbd_wl = ctx->ufkbd_wl;
+	struct ufkbd_ctx *ufkbd = ufkbd_wl->ufkbd;
+
+	ufkbd_terminate(ufkbd);
+}
+
+static const struct zwlr_layer_surface_v1_listener surface_listener = {
+	.configure = on_surface_configure,
+	.closed = on_surface_closed,
+};
+
+static int try_create_layer_surface(struct ufkbd_wl_surface *ctx)
+{
+	if (ctx->wl == NULL)
+		return -EINVAL;
+
+	if (ctx->shell == NULL)
+		return -EINVAL;
+
+	if (ctx->vper == NULL)
+		return -EINVAL;
+
+	ctx->vp = wp_viewporter_get_viewport(ctx->vper, ctx->wl);
+	if (ctx->vp == NULL)
+		return -ENOMEM;
+
+	ctx->wlr = zwlr_layer_shell_v1_get_layer_surface(ctx->shell, ctx->wl, NULL, ZWLR_LAYER_SHELL_V1_LAYER_TOP, "ufkbd-osk");
+	if (ctx->wlr == NULL)
+		return -ENOMEM;
+
+	zwlr_layer_surface_v1_set_anchor(ctx->wlr,
+					 ZWLR_LAYER_SURFACE_V1_ANCHOR_LEFT
+				       | ZWLR_LAYER_SURFACE_V1_ANCHOR_RIGHT
+				       | ZWLR_LAYER_SURFACE_V1_ANCHOR_BOTTOM);
+	zwlr_layer_surface_v1_set_size(ctx->wlr, 0, 185);
+	zwlr_layer_surface_v1_set_exclusive_zone(ctx->wlr, 185);
+
+	zwlr_layer_surface_v1_add_listener(ctx->wlr, &surface_listener, ctx);
+
+	// Commit the role given to the surface
+	wl_surface_commit(ctx->wl);
+
+	return 0;
+}
+
+static void on_global_compositor(void *data,
+				 struct wl_registry *reg,
+				 uint32_t name,
+				 uint32_t version)
+{
+	struct ufkbd_wl_surface *ctx = data;
+
+	if (version < WL_COMPOSITOR_CREATE_SURFACE_SINCE_VERSION)
+		return;
+
+	ctx->compositor = wl_registry_bind(reg,
+					   name,
+					   &wl_compositor_interface,
+					   version);
+	if (ctx->compositor == NULL) {
+		fprintf(stderr, "warn: could not bind to compositor\n");
+		return;
+	}
+
+	ctx->wl = wl_compositor_create_surface(ctx->compositor);
+	if (ctx->wl == NULL) {
+		fprintf(stderr, "warn: no valid surface\n");
+		return;
+	}
+
+	try_create_layer_surface(ctx);
+}
+
+static void on_global_shell(void *data,
+			    struct wl_registry *reg,
+			    uint32_t name,
+			    uint32_t version)
+{
+	struct ufkbd_wl_surface *ctx = data;
+
+	ctx->shell = wl_registry_bind(reg,
+				      name,
+				      &zwlr_layer_shell_v1_interface,
+				      version);
+	if (ctx->shell == NULL) {
+		fprintf(stderr, "wl: warn: could not bind to window manager\n");
+		return;
+	}
+
+	try_create_layer_surface(ctx);
+}
+
+static void on_global_viewporter(void *data,
+				 struct wl_registry *reg,
+				 uint32_t name,
+				 uint32_t version)
+{
+	struct ufkbd_wl_surface *ctx = data;
+
+	ctx->vper = wl_registry_bind(reg,
+				     name,
+				     &wp_viewporter_interface,
+				     version);
+	if (ctx->vper == NULL) {
+		fprintf(stderr, "wl: warn: could not bind to viewporter\n");
+		return;
+	}
+
+	try_create_layer_surface(ctx);
+}
+
+int ufkbd_wl_surface_consume_buffer(struct ufkbd_wl_surface *ctx,
+				    struct wl_buffer **buf, void **ptr)
+{
+	int ret;
+
+	if (buf == NULL || ptr == NULL)
+		return -EINVAL;
+
+	ret = ufkbd_wl_buffer_consume(&ctx->bufs[0], buf, ptr);
+	if (ret != -EBUSY)
+		return ret;
+
+	ret = ufkbd_wl_buffer_consume(&ctx->bufs[1], buf, ptr);
+
+	return ret;
+}
+
+static int ufkbd_wl_surface_resize_buffers(struct ufkbd_wl_surface *ctx,
+					   uint32_t width, uint32_t height)
+{
+	int ret;
+
+	ctx->stride = (size_t) width * 4;
+
+	ret = ufkbd_wl_buffer_resize(&ctx->bufs[0],
+				     width * ctx->scale,
+				     height * ctx->scale);
+	if (ret)
+		return ret;
+
+	return ufkbd_wl_buffer_resize(&ctx->bufs[1],
+				      width * ctx->scale,
+				      height * ctx->scale);
+}
+
+int ufkbd_wl_surface_init(struct ufkbd_input_wayland *ufkbd_wl,
+			  struct ufkbd_wl_surface **out)
+{
+	struct ufkbd_wl_surface *ctx;
+	int ret;
+
+	ctx = calloc(1, sizeof(*ctx));
+	if (ctx == NULL)
+		return -errno;
+
+	ctx->ufkbd_wl = ufkbd_wl;
+	ctx->scale = 1;
+
+	ret = ufkbd_wl_buffer_init(&ctx->bufs[0], ufkbd_wl, 0);
+	if (ret)
+		goto err_free_ctx;
+
+	ret = ufkbd_wl_buffer_init(&ctx->bufs[1], ufkbd_wl, 1);
+	if (ret)
+		goto err_uninit_buf0;
+
+	ctx->listener_comp.iface = &wl_compositor_interface;
+	ctx->listener_comp.cb = on_global_compositor;
+	ctx->listener_comp.data = ctx;
+
+	ret = ufkbd_wl_global_listener_add(ufkbd_wl, &ctx->listener_comp);
+	if (ret)
+		goto err_uninit_buf1;
+
+	ctx->listener_shell.iface = &zwlr_layer_shell_v1_interface;
+	ctx->listener_shell.cb = on_global_shell;
+	ctx->listener_shell.data = ctx;
+
+	ret = ufkbd_wl_global_listener_add(ufkbd_wl, &ctx->listener_shell);
+	if (ret)
+		goto err_uninit_buf1;
+
+	ctx->listener_viewporter.iface = &wp_viewporter_interface;
+	ctx->listener_viewporter.cb = on_global_viewporter;
+	ctx->listener_viewporter.data = ctx;
+
+	ret = ufkbd_wl_global_listener_add(ufkbd_wl, &ctx->listener_viewporter);
+	if (ret)
+		goto err_uninit_buf1;
+
+	ufkbd_graphics_set_scale(ctx->ufkbd_wl->ufkbd->graphics, ctx->scale);
+
+	*out = ctx;
+
+	return 0;
+
+err_uninit_buf1:
+	ufkbd_wl_buffer_uninit(&ctx->bufs[1]);
+err_uninit_buf0:
+	ufkbd_wl_buffer_uninit(&ctx->bufs[0]);
+err_free_ctx:
+	free(ctx);
+	return ret;
+}
+
+void ufkbd_wl_surface_uninit(struct ufkbd_wl_surface *ctx)
+{
+	if (ctx->vper != NULL)
+		wp_viewporter_destroy(ctx->vper);
+
+	if (ctx->vp != NULL)
+		wp_viewport_destroy(ctx->vp);
+
+	if (ctx->wlr != NULL)
+		zwlr_layer_surface_v1_destroy(ctx->wlr);
+
+	if (ctx->wl != NULL)
+		wl_surface_destroy(ctx->wl);
+
+	if (ctx->shell != NULL)
+		zwlr_layer_shell_v1_destroy(ctx->shell);
+
+	if (ctx->compositor != NULL)
+		wl_compositor_destroy(ctx->compositor);
+
+	ufkbd_wl_buffer_uninit(&ctx->bufs[1]);
+	ufkbd_wl_buffer_uninit(&ctx->bufs[0]);
+
+	free(ctx);
+}

wayland/wayland.h

@@ -0,0 +1,149 @@
+/* SPDX-License-Identifier: GPL-3.0-only */
+/*
+ * Wayland objects.
+ *
+ * Copyright (c) 2024, Richard Acayan. All rights reserved.
+ */
+
+#ifndef UFKBD_WAYLAND_H
+#define UFKBD_WAYLAND_H
+
+#include <stdbool.h>
+#include <stddef.h>
+#include <stdint.h>
+#include <xkbcommon/xkbcommon.h>
+
+#include "ufkbd.h"
+
+#define MAX_GLOBAL_LISTENERS 16
+
+#define SHM_PATH_SIZE 256
+
+struct ufkbd_ctx;
+
+struct wl_display;
+struct wl_registry;
+struct wl_seat;
+struct wl_pointer;
+struct wl_compositor;
+struct xdg_wm_base;
+
+struct wl_surface;
+struct wp_viewport;
+struct wp_viewporter;
+struct xdg_surface;
+struct xdg_toplevel;
+
+struct zwp_virtual_keyboard_manager_v1;
+struct zwp_virtual_keyboard_v1;
+
+struct zwp_input_method_manager_v2;
+struct zwp_input_method_v2;
+
+struct ufkbd_input_wayland;
+
+struct ufkbd_wl_global_listener {
+	const struct wl_interface *iface;
+	void (*cb)(void *data, struct wl_registry *reg, uint32_t name, uint32_t version);
+	void *data;
+};
+
+struct ufkbd_wl_input {
+	struct ufkbd_input_wayland *ufkbd_wl;
+
+	struct ufkbd_wl_global_listener listener_seat;
+	struct ufkbd_wl_global_listener listener_manager;
+	struct ufkbd_wl_global_listener listener_methodman;
+
+	struct wl_seat *seat;
+	struct wl_pointer *pointer;
+	struct wl_touch *touch;
+
+	struct zwp_virtual_keyboard_manager_v1 *manager;
+	struct zwp_virtual_keyboard_v1 *kb;
+
+	uint32_t mod_state;
+};
+
+struct ufkbd_wl_buffer {
+	struct ufkbd_ctx *ufkbd;
+	unsigned int id;
+
+	struct ufkbd_wl_global_listener listener;
+	struct wl_shm *wl;
+
+	struct wl_shm_pool *pool;
+	struct wl_buffer *buf;
+
+	bool avail, dirty, resize;
+
+	void *ptr;
+	int fd;
+
+	uint32_t width, height;
+	size_t size;
+
+	char path[SHM_PATH_SIZE];
+};
+
+struct ufkbd_wl_surface {
+	struct ufkbd_input_wayland *ufkbd_wl;
+
+	struct ufkbd_wl_global_listener listener_comp;
+	struct ufkbd_wl_global_listener listener_shell;
+	struct ufkbd_wl_global_listener listener_viewporter;
+
+	struct wl_compositor *compositor;
+	struct zwlr_layer_shell_v1 *shell;
+
+	struct wl_surface *wl;
+	struct zwlr_layer_surface_v1 *wlr;
+
+	struct wp_viewporter *vper;
+	struct wp_viewport *vp;
+
+	unsigned int scale;
+	size_t stride;
+
+	struct ufkbd_wl_buffer bufs[2];
+};
+
+struct ufkbd_input_wayland {
+	struct ufkbd_ctx *ufkbd;
+
+	struct ufkbd_wl_surface *surface;
+	struct ufkbd_wl_input *input;
+
+	struct wl_display *display;
+	struct wl_registry *registry;
+	int fd;
+
+	size_t n_global_listeners;
+	struct ufkbd_wl_global_listener *global_listeners[MAX_GLOBAL_LISTENERS];
+};
+
+int ufkbd_wl_buffer_consume(struct ufkbd_wl_buffer *ctx,
+				    struct wl_buffer **buf, void **ptr);
+int ufkbd_wl_buffer_resize(struct ufkbd_wl_buffer *ctx,
+				   uint32_t width, uint32_t height);
+int ufkbd_wl_buffer_init(struct ufkbd_wl_buffer *ctx,
+				 struct ufkbd_input_wayland *ufkbd_wl,
+				 unsigned int id);
+void ufkbd_wl_buffer_uninit(struct ufkbd_wl_buffer *ctx);
+
+int ufkbd_wl_surface_consume_buffer(struct ufkbd_wl_surface *ctx,
+				    struct wl_buffer **buf, void **ptr);
+int ufkbd_wl_surface_init(struct ufkbd_input_wayland *ufkbd_wl,
+			  struct ufkbd_wl_surface **out);
+void ufkbd_wl_surface_uninit(struct ufkbd_wl_surface *ctx);
+
+int ufkbd_wl_input_init(struct ufkbd_input_wayland *ufkbd_wl,
+			struct ufkbd_wl_input **out);
+void ufkbd_wl_input_uninit(struct ufkbd_wl_input *ctx);
+int ufkbd_wl_input_send_key(struct ufkbd_wl_input *ctx, int key, bool repeat);
+int ufkbd_wl_input_send_mod(struct ufkbd_wl_input *ctx, enum ufkbd_modifier mod, bool pressed);
+
+int ufkbd_wl_global_listener_add(struct ufkbd_input_wayland *ctx,
+				 struct ufkbd_wl_global_listener *listener);
+
+#endif /* UFKBD_WAYLAND_H */