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Implement text alignment support in iced_tiny_skia

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Héctor Ramón Jiménez 2023-02-26 23:44:50 +01:00
parent 64fb722dfe
commit 3386402f5a
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GPG key ID: 140CC052C94F138E
1 changed files with 25 additions and 6 deletions
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31
tiny_skia/src/text.rs
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@ -76,8 +76,8 @@ impl Pipeline {
color: Color,
size: f32,
font: Font,
_horizontal_alignment: alignment::Horizontal, // TODO
_vertical_alignment: alignment::Vertical, // TODO
horizontal_alignment: alignment::Horizontal,
vertical_alignment: alignment::Vertical,
pixels: &mut tiny_skia::PixmapMut<'_>,
clip_mask: Option<&tiny_skia::ClipMask>,
) {
@ -91,6 +91,27 @@ impl Pipeline {
let (_, buffer) = fields.render_cache.allocate(&fields.fonts, key);
let (total_lines, max_width) = buffer
.layout_runs()
.enumerate()
.fold((0, 0.0), |(_, max), (i, buffer)| {
(i + 1, buffer.line_w.max(max))
});
let total_height = total_lines as f32 * size * 1.2;
let x = match horizontal_alignment {
alignment::Horizontal::Left => bounds.x,
alignment::Horizontal::Center => bounds.x - max_width / 2.0,
alignment::Horizontal::Right => bounds.x - max_width,
};
let y = match vertical_alignment {
alignment::Vertical::Top => bounds.y,
alignment::Vertical::Center => bounds.y - total_height / 2.0,
alignment::Vertical::Bottom => bounds.y - total_height,
};
let mut swash = cosmic_text::SwashCache::new(&fields.fonts);
for run in buffer.layout_runs() {
@ -159,10 +180,8 @@ impl Pipeline {
.expect("Create glyph pixel map");
pixels.draw_pixmap(
bounds.x as i32
+ glyph.x_int
+ image.placement.left,
bounds.y as i32 - glyph.y_int - image.placement.top
x as i32 + glyph.x_int + image.placement.left,
y as i32 - glyph.y_int - image.placement.top
+ run.line_y as i32,
pixmap,
&tiny_skia::PixmapPaint::default(),