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Add support for position:sticky

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This leverages the position:sticky support in WebRender to bring basic
support for position:sticky in Servo. There are still some issues with
nested sticky flows as well as a few other corner cases. Tests are
imported from WPT and can be removed once we update to the latest
version.
This commit is contained in:
Martin Robinson 2017-08-24 09:37:49 +02:00
parent 4725a05bfb
commit bc455c8a1f
84 changed files with 5729 additions and 50 deletions
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4
components/gfx/display_list/mod.rs
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@ -34,7 +34,8 @@ use style_traits::cursor::Cursor;
use text::TextRun;
use text::glyph::ByteIndex;
use webrender_api::{self, ClipAndScrollInfo, ClipId, ColorF, GradientStop, LocalClip};
use webrender_api::{MixBlendMode, ScrollPolicy, ScrollSensitivity, TransformStyle};
use webrender_api::{MixBlendMode, ScrollPolicy, ScrollSensitivity, StickyFrameInfo};
use webrender_api::TransformStyle;
pub use style::dom::OpaqueNode;
@ -559,6 +560,7 @@ impl fmt::Debug for StackingContext {
#[derive(Clone, Debug, Deserialize, HeapSizeOf, Serialize)]
pub enum ScrollRootType {
ScrollFrame(ScrollSensitivity),
StickyFrame(StickyFrameInfo),
Clip,
}