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Use a non-repeating display item for background-repeat: no-repeat

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This commit is contained in:
Simon Sapin 2020-01-13 22:54:12 +01:00
parent b5042eaa52
commit c72f7894aa
1 changed files with 26 additions and 15 deletions
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41
components/layout_2020/display_list.rs
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@ -426,7 +426,7 @@ impl<'a> BuilderForBoxFragment<'a> {
clipping_area_origin: f32,
clipping_area_size: f32,
positioning_area_size: f32,
) -> (f32, f32) {
) -> (bool, f32, f32) {
// https://drafts.csswg.org/css-backgrounds/#background-repeat
if let Repeat::Round = repeat {
*tile_size = positioning_area_size / (positioning_area_size / *tile_size).round();
@ -448,20 +448,20 @@ impl<'a> BuilderForBoxFragment<'a> {
}
}
match repeat {
Repeat::NoRepeat => (position, *tile_size),
Repeat::NoRepeat => (false, position, *tile_size),
Repeat::Repeat | Repeat::Round | Repeat::Space => {
let tile_stride = *tile_size + *tile_spacing;
let offset = position - clipping_area_origin;
let bounds_origin = position - tile_stride * (offset / tile_stride).ceil();
let bounds_size = clipping_area_size - bounds_origin - clipping_area_origin;
(bounds_origin, bounds_size)
(true, bounds_origin, bounds_size)
},
}
}
let mut tile_spacing = units::LayoutSize::zero();
let RepeatXY(repeat_x, repeat_y) = *get_cyclic(&b.background_repeat.0, index);
let (bounds_origin_x, bounds_width) = layout_1d(
let (repeat_x, bounds_origin_x, bounds_width) = layout_1d(
&mut tile_size.width,
&mut tile_spacing.width,
repeat_x,
@ -470,7 +470,7 @@ impl<'a> BuilderForBoxFragment<'a> {
clipping_area.size.width,
positioning_area.size.width,
);
let (bounds_origin_y, bounds_height) = layout_1d(
let (repeat_y, bounds_origin_y, bounds_height) = layout_1d(
&mut tile_size.height,
&mut tile_spacing.height,
repeat_y,
@ -488,16 +488,27 @@ impl<'a> BuilderForBoxFragment<'a> {
let mut common = builder.common_properties(*clipping_area);
self.with_border_edge_clip(builder, &mut common);
builder.wr.push_repeating_image(
&common,
bounds,
tile_size,
tile_spacing,
image_rendering(self.fragment.style.clone_image_rendering()),
wr::AlphaType::PremultipliedAlpha,
key,
wr::ColorF::WHITE,
)
if repeat_x || repeat_y {
builder.wr.push_repeating_image(
&common,
bounds,
tile_size,
tile_spacing,
image_rendering(self.fragment.style.clone_image_rendering()),
wr::AlphaType::PremultipliedAlpha,
key,
wr::ColorF::WHITE,
)
} else {
builder.wr.push_image(
&common,
bounds,
image_rendering(self.fragment.style.clone_image_rendering()),
wr::AlphaType::PremultipliedAlpha,
key,
wr::ColorF::WHITE,
)
}
}
fn build_border(&mut self, builder: &mut DisplayListBuilder) {