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Handle clip property in 2020

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This commit is contained in:
Manish Goregaokar 2020-07-23 18:04:46 -07:00
parent 139f240baf
commit 07c87b4715
1 changed files with 24 additions and 0 deletions
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24
components/layout_2020/display_list/stacking_context.rs
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@ -19,6 +19,7 @@ use style::computed_values::mix_blend_mode::T as ComputedMixBlendMode;
use style::computed_values::overflow_x::T as ComputedOverflow;
use style::computed_values::position::T as ComputedPosition;
use style::properties::ComputedValues;
use style::values::computed::ClipRectOrAuto;
use style::values::computed::Length;
use style::values::generics::box_::Perspective;
use style::values::generics::transform;
@ -670,6 +671,7 @@ impl BoxFragment {
// We want to build the scroll frame after the background and border, because
// they shouldn't scroll with the rest of the box content.
self.build_scroll_frame_if_necessary(builder, containing_block_info);
self.build_clip_frame_if_necessary(builder, containing_block_info);
let padding_rect = self
.padding_rect()
@ -708,6 +710,27 @@ impl BoxFragment {
builder.current_space_and_clip.spatial_id = builder.nearest_reference_frame;
}
fn build_clip_frame_if_necessary(
&self,
builder: &mut StackingContextBuilder,
containing_block_info: &ContainingBlockInfo,
) {
let clip = self.style.get_effects().clip;
if let ClipRectOrAuto::Rect(r) = clip {
let border_rect = self
.border_rect()
.to_physical(self.style.writing_mode, &containing_block_info.rect);
let clip_rect = r
.for_border_rect(border_rect)
.translate(containing_block_info.rect.origin.to_vector())
.to_webrender();
let parent = builder.current_space_and_clip;
builder.current_space_and_clip.clip_id =
builder.wr.define_clip_rect(&parent, clip_rect);
}
}
fn build_scroll_frame_if_necessary<'a>(
&self,
builder: &mut StackingContextBuilder,
@ -715,6 +738,7 @@ impl BoxFragment {
) {
let overflow_x = self.style.get_box().overflow_x;
let overflow_y = self.style.get_box().overflow_y;
let original_scroll_and_clip_info = builder.current_space_and_clip;
if overflow_x != ComputedOverflow::Visible || overflow_y != ComputedOverflow::Visible {
let external_id = wr::ExternalScrollId(