Draft Editor API and TextEditor widget

tiny_skia/src/backend.rs

@@ -383,6 +383,31 @@ impl Backend {
                     clip_mask,
                 );
             }
+            Primitive::Editor {
+                editor,
+                position,
+                color,
+            } => {
+                let physical_bounds =
+                    (Rectangle::new(*position, editor.bounds) + translation)
+                        * scale_factor;
+
+                if !clip_bounds.intersects(&physical_bounds) {
+                    return;
+                }
+
+                let clip_mask = (!physical_bounds.is_within(&clip_bounds))
+                    .then_some(clip_mask as &_);
+
+                self.text_pipeline.draw_editor(
+                    editor,
+                    *position + translation,
+                    *color,
+                    scale_factor,
+                    pixels,
+                    clip_mask,
+                );
+            }
             Primitive::Text {
                 content,
                 bounds,

tiny_skia/src/text.rs

@@ -2,6 +2,7 @@ use crate::core::alignment;
 use crate::core::text::{LineHeight, Shaping};
 use crate::core::{Color, Font, Pixels, Point, Rectangle};
 use crate::graphics::text::cache::{self, Cache};
+use crate::graphics::text::editor;
 use crate::graphics::text::font_system;
 use crate::graphics::text::paragraph;
 
@@ -64,6 +65,37 @@ impl Pipeline {
         );
     }
 
+    pub fn draw_editor(
+        &mut self,
+        editor: &editor::Weak,
+        position: Point,
+        color: Color,
+        scale_factor: f32,
+        pixels: &mut tiny_skia::PixmapMut<'_>,
+        clip_mask: Option<&tiny_skia::Mask>,
+    ) {
+        use crate::core::text::Editor as _;
+
+        let Some(editor) = editor.upgrade() else {
+            return;
+        };
+
+        let mut font_system = font_system().write().expect("Write font system");
+
+        draw(
+            font_system.raw(),
+            &mut self.glyph_cache,
+            editor.buffer(),
+            Rectangle::new(position, editor.min_bounds()),
+            color,
+            alignment::Horizontal::Left,
+            alignment::Vertical::Top,
+            scale_factor,
+            pixels,
+            clip_mask,
+        );
+    }
+
     pub fn draw_cached(
         &mut self,
         content: &str,