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Update to support new clipping coordinates change

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This commit is contained in:
Martin Robinson 2017-04-04 19:00:26 +02:00 • committed by Glenn Watson
parent 8d8fea0b4b
commit 39600f9f4e
3 changed files with 17 additions and 12 deletions
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4
components/gfx/display_list/mod.rs
View file

@ -510,8 +510,8 @@ pub struct ScrollRoot {
/// The position of this scroll root's frame in the parent stacking context.
pub clip: Rect<Au>,
/// The size of the contents that can be scrolled inside of the scroll root.
pub size: Size2D<Au>,
/// The rect of the contents that can be scrolled inside of the scroll root.
pub content_rect: Rect<Au>,
}
impl ScrollRoot {

21
components/layout/display_list_builder.rs
View file

@ -1963,24 +1963,29 @@ impl BlockFlowDisplayListBuilding for BlockFlow {
&self.base.early_absolute_position_info.relative_containing_block_size,
self.base.early_absolute_position_info.relative_containing_block_mode,
coordinate_system);
let clip = self.fragment.stacking_relative_content_box(&border_box);
let content_box = self.fragment.stacking_relative_content_box(&border_box);
let has_scrolling_overflow = self.base.overflow.scroll.origin != Point2D::zero() ||
self.base.overflow.scroll.size.width > clip.size.width ||
self.base.overflow.scroll.size.height > clip.size.height;
self.mark_scrolling_overflow(has_scrolling_overflow);
if !has_scrolling_overflow {
// If we don't overflow our box at all, we can avoid creating a scroll root.
if self.base.overflow.scroll.origin == Point2D::zero() &&
self.base.overflow.scroll.size.width <= content_box.size.width &&
self.base.overflow.scroll.size.height <= content_box.size.height {
self.mark_scrolling_overflow(false);
return containing_scroll_root_id;
}
self.mark_scrolling_overflow(true);
let new_scroll_root_id = ScrollRootId::new_of_type(self.fragment.node.id() as usize,
self.fragment.fragment_type());
let content_size = self.base.overflow.scroll.origin + self.base.overflow.scroll.size;
state.add_scroll_root(
ScrollRoot {
id: new_scroll_root_id,
parent_id: containing_scroll_root_id,
clip: clip,
size: self.base.overflow.scroll.size,
clip: Rect::new(Point2D::zero(), content_box.size),
content_rect: Rect::new(content_box.origin,
Size2D::new(content_size.x, content_size.y)),
},
self.base.stacking_context_id
);

4
components/layout/webrender_helpers.rs
View file

@ -425,8 +425,8 @@ impl WebRenderDisplayItemConverter for DisplayItem {
None);
let provided_id = ScrollLayerId::new(item.scroll_root.id.0 as u64, builder.pipeline_id);
let id = builder.define_clip(clip,
item.scroll_root.size.to_sizef(),
let id = builder.define_clip(item.scroll_root.content_rect.to_rectf(),
clip,
Some(provided_id));
debug_assert!(provided_id == id);
}