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Use CSS background-size property when computing the size of a paint worklet.

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Alan Jeffrey 2017-07-24 17:32:54 -05:00
parent 3629efba75
commit a8da777fd1
4 changed files with 11 additions and 13 deletions
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12
components/layout/display_list_builder.rs
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@ -1171,7 +1171,17 @@ impl FragmentDisplayListBuilding for Fragment {
// https://github.com/w3c/css-houdini-drafts/issues/417
let unbordered_box = self.border_box - style.logical_border_width();
let device_pixel_ratio = state.layout_context.style_context.device_pixel_ratio();
let size_in_au = unbordered_box.size.to_physical(style.writing_mode);
let unbordered_box_size_in_au = unbordered_box.size.to_physical(style.writing_mode);
let background_size = get_cyclic(&style.get_background().background_size.0, index).clone();
let size_in_au = match background_size {
BackgroundSize::Explicit { width, height } => {
Size2D::new(MaybeAuto::from_style(width, unbordered_box_size_in_au.width)
.specified_or_default(unbordered_box_size_in_au.width),
MaybeAuto::from_style(height, unbordered_box_size_in_au.height)
.specified_or_default(unbordered_box_size_in_au.height))
},
_ => unbordered_box_size_in_au,
};
let size_in_px = TypedSize2D::new(size_in_au.width.to_f32_px(), size_in_au.height.to_f32_px());
let name = paint_worklet.name.clone();