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: Paint stacking contexts' overflow areas properly.

Browse source 
This was making `box-shadow` not show up in many cases, in particular,
but the effects were not limited to that.
This commit is contained in:
Patrick Walton 2014-12-18 18:59:42 -08:00
parent ba8cf6b0e6
commit 5ea2c6dcfd
30 changed files with 357 additions and 179 deletions
Download patch file Download diff file Expand all files Collapse all files

53
components/gfx/paint_task.rs
View file

@ -148,20 +148,21 @@ fn initialize_layers<C>(compositor: &mut C,
stacking_context: &StackingContext,
page_position: &Point2D<Au>) {
let page_position = stacking_context.bounds.origin + *page_position;
match stacking_context.layer {
None => {}
Some(ref paint_layer) => {
metadata.push(LayerMetadata {
id: paint_layer.id,
position:
Rect(Point2D(page_position.x.to_nearest_px() as uint,
page_position.y.to_nearest_px() as uint),
Size2D(stacking_context.bounds.size.width.to_nearest_px() as uint,
stacking_context.bounds.size.height.to_nearest_px() as uint)),
background_color: paint_layer.background_color,
scroll_policy: paint_layer.scroll_policy,
})
}
if let Some(ref paint_layer) = stacking_context.layer {
// Layers start at the top left of their overflow rect, as far as the info we give to
// the compositor is concerned.
let overflow_relative_page_position = page_position + stacking_context.overflow.origin;
let layer_position =
Rect(Point2D(overflow_relative_page_position.x.to_nearest_px() as i32,
overflow_relative_page_position.y.to_nearest_px() as i32),
Size2D(stacking_context.overflow.size.width.to_nearest_px() as i32,
stacking_context.overflow.size.height.to_nearest_px() as i32));
metadata.push(LayerMetadata {
id: paint_layer.id,
position: layer_position,
background_color: paint_layer.background_color,
scroll_policy: paint_layer.scroll_policy,
})
}
for kid in stacking_context.display_list.children.iter() {
@ -384,15 +385,14 @@ impl<C> PaintTask<C> where C: PaintListener + Send {
layer_id: LayerId) {
profile(TimeProfilerCategory::Painting, None, self.time_profiler_chan.clone(), || {
// Bail out if there is no appropriate stacking context.
let stacking_context = match self.root_stacking_context {
Some(ref stacking_context) => {
match display_list::find_stacking_context_with_layer_id(stacking_context,
layer_id) {
Some(stacking_context) => stacking_context,
None => return,
}
let stacking_context = if let Some(ref stacking_context) = self.root_stacking_context {
match display_list::find_stacking_context_with_layer_id(stacking_context,
layer_id) {
Some(stacking_context) => stacking_context,
None => return,
}
None => return,
} else {
return
};
// Divide up the layer into tiles and distribute them to workers via a simple round-
@ -547,8 +547,13 @@ impl WorkerThread {
transient_clip: None,
};
// Apply a translation to start at the boundaries of the stacking context, since the
// layer's origin starts at its overflow rect's origin.
let tile_bounds = tile.page_rect.translate(
&Point2D(stacking_context.overflow.origin.x.to_subpx() as AzFloat,
stacking_context.overflow.origin.y.to_subpx() as AzFloat));
// Apply the translation to paint the tile we want.
let tile_bounds = tile.page_rect;
let matrix: Matrix2D<AzFloat> = Matrix2D::identity();
let matrix = matrix.scale(scale as AzFloat, scale as AzFloat);
let matrix = matrix.translate(-tile_bounds.origin.x as AzFloat,
@ -561,7 +566,7 @@ impl WorkerThread {
profile(TimeProfilerCategory::PaintingPerTile, None,
self.time_profiler_sender.clone(), || {
stacking_context.optimize_and_draw_into_context(&mut paint_context,
&tile.page_rect,
&tile_bounds,
&matrix,
None);
paint_context.draw_target.flush();