Mirrors/servo
1
0
Fork 0
mirror of https://github.com/servo/servo.git synced 2025-08-06 06:00:15 +01:00
Code Issues Projects Releases Packages Wiki Activity

layout: Implement basic overflow: scroll functionality.

Browse source 
Known issues:

* Display list optimization can sometimes optimize out elements that
  should be shown. This affects the Enyo demo.

* The `overflow: scroll` container doesn't clip the inner layer properly
  when borders, border radius, etc. are present.

* `overflow-x: scroll` and `overflow-y: scroll` don't work individually;
  elements are scrolled all at once.

* Scrolling only works on absolutely-positioned elements.
This commit is contained in:
Patrick Walton 2015-08-07 18:10:48 -07:00
parent fc13dd1169
commit df4acbac04
8 changed files with 221 additions and 72 deletions
Download patch file Download diff file Expand all files Collapse all files

14
components/compositing/compositor.rs
View file

@ -629,6 +629,7 @@ impl<Window: WindowMethods> IOCompositor<Window> {
transform: Matrix4::identity(),
perspective: Matrix4::identity(),
establishes_3d_context: true,
scrolls_overflow_area: false,
};
let root_layer = CompositorData::new_layer(pipeline.id,
@ -740,10 +741,21 @@ impl<Window: WindowMethods> IOCompositor<Window> {
if let Some(parent_layer) = self.find_layer_with_pipeline_and_layer_id(pipeline_id,
parent_id) {
let wants_scroll_events = if layer_properties.scrolls_overflow_area {
WantsScrollEventsFlag::WantsScrollEvents
} else {
WantsScrollEventsFlag::DoesntWantScrollEvents
};
let new_layer = CompositorData::new_layer(pipeline_id,
layer_properties,
WantsScrollEventsFlag::DoesntWantScrollEvents,
wants_scroll_events,
parent_layer.tile_size);
if layer_properties.scrolls_overflow_area {
*new_layer.masks_to_bounds.borrow_mut() = true
}
parent_layer.add_child(new_layer);
}
}