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Clip background-color to border-radius

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This commit is contained in:
Simon Sapin 2020-01-03 16:58:08 +01:00
parent cbf467b18c
commit 347d5825d1
1 changed files with 25 additions and 3 deletions
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28
components/layout_2020/display_list.rs
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@ -47,6 +47,13 @@ impl DisplayListBuilder {
flags: wr::PrimitiveFlags::default(),
}
}
fn clipping_and_scrolling_scope<R>(&mut self, f: impl FnOnce(&mut Self) -> R) -> R {
let previous = self.current_space_and_clip;
let result = f(self);
self.current_space_and_clip = previous;
result
}
}
/// Contentful paint, for the purpose of
@ -133,7 +140,7 @@ impl BoxFragment {
let hit_info = hit_info(&self.style, self.tag, Cursor::Default);
let border_radius = self.border_radius(&border_rect);
self.background_display_items(builder, hit_info, border_rect);
self.background_display_items(builder, hit_info, border_rect, &border_radius);
self.border_display_items(builder, hit_info, border_rect, border_radius);
let content_rect = self
.content_rect
@ -168,13 +175,28 @@ impl BoxFragment {
builder: &mut DisplayListBuilder,
hit_info: HitInfo,
border_rect: units::LayoutRect,
border_radius: &wr::BorderRadius,
) {
let background_color = self
.style
.resolve_color(self.style.clone_background_color());
if background_color.alpha > 0 || hit_info.is_some() {
let common = builder.common_properties(border_rect, hit_info);
builder.wr.push_rect(&common, rgba(background_color))
builder.clipping_and_scrolling_scope(|builder| {
if !border_radius.is_zero() {
builder.current_space_and_clip.clip_id = builder.wr.define_clip(
&builder.current_space_and_clip,
border_rect,
Some(wr::ComplexClipRegion {
rect: border_rect,
radii: *border_radius,
mode: wr::ClipMode::Clip,
}),
None,
);
}
let common = builder.common_properties(border_rect, hit_info);
builder.wr.push_rect(&common, rgba(background_color))
});
}
}