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layout: Paint stacking contexts' overflow areas properly.

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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
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33
components/layout/layout_task.rs
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@ -10,7 +10,7 @@ use construct::ConstructionResult;
use context::SharedLayoutContext;
use flow::{mod, Flow, ImmutableFlowUtils, MutableFlowUtils, MutableOwnedFlowUtils};
use flow_ref::FlowRef;
use fragment::{Fragment, FragmentBoundsIterator};
use fragment::{Fragment, FragmentOverflowIterator};
use incremental::{LayoutDamageComputation, REFLOW, REFLOW_ENTIRE_DOCUMENT, REPAINT};
use layout_debug;
use parallel::{mod, UnsafeFlow};
@ -604,7 +604,7 @@ impl LayoutTask {
// FIXME(pcwalton): This has not been updated to handle the stacking context relative
// stuff. So the position is wrong in most cases.
let requested_node: OpaqueNode = OpaqueNodeMethods::from_script_node(requested_node);
let mut iterator = UnioningFragmentBoundsIterator::new(requested_node);
let mut iterator = UnioningFragmentOverflowIterator::new(requested_node);
sequential::iterate_through_flow_tree_fragment_bounds(layout_root, &mut iterator);
rw_data.content_box_response = iterator.rect;
}
@ -616,7 +616,7 @@ impl LayoutTask {
// FIXME(pcwalton): This has not been updated to handle the stacking context relative
// stuff. So the position is wrong in most cases.
let requested_node: OpaqueNode = OpaqueNodeMethods::from_script_node(requested_node);
let mut iterator = CollectingFragmentBoundsIterator::new(requested_node);
let mut iterator = CollectingFragmentOverflowIterator::new(requested_node);
sequential::iterate_through_flow_tree_fragment_bounds(layout_root, &mut iterator);
rw_data.content_boxes_response = iterator.rects;
}
@ -689,11 +689,12 @@ impl LayoutTask {
flow::mut_base(layout_root.deref_mut()).display_list_building_result
.add_to(&mut *display_list);
let paint_layer = Arc::new(PaintLayer::new(layout_root.layer_id(0),
color,
Scrollable));
color,
Scrollable));
let origin = Rect(Point2D(Au(0), Au(0)), root_size);
let stacking_context = Arc::new(StackingContext::new(display_list,
origin,
&origin,
&origin,
0,
1.0,
Some(paint_layer)));
@ -1016,21 +1017,21 @@ impl LayoutRPC for LayoutRPCImpl {
}
}
struct UnioningFragmentBoundsIterator {
struct UnioningFragmentOverflowIterator {
node_address: OpaqueNode,
rect: Rect<Au>,
}
impl UnioningFragmentBoundsIterator {
fn new(node_address: OpaqueNode) -> UnioningFragmentBoundsIterator {
UnioningFragmentBoundsIterator {
impl UnioningFragmentOverflowIterator {
fn new(node_address: OpaqueNode) -> UnioningFragmentOverflowIterator {
UnioningFragmentOverflowIterator {
node_address: node_address,
rect: Rect::zero(),
}
}
}
impl FragmentBoundsIterator for UnioningFragmentBoundsIterator {
impl FragmentOverflowIterator for UnioningFragmentOverflowIterator {
fn process(&mut self, _: &Fragment, bounds: Rect<Au>) {
if self.rect.is_empty() {
self.rect = bounds;
@ -1044,21 +1045,21 @@ impl FragmentBoundsIterator for UnioningFragmentBoundsIterator {
}
}
struct CollectingFragmentBoundsIterator {
struct CollectingFragmentOverflowIterator {
node_address: OpaqueNode,
rects: Vec<Rect<Au>>,
}
impl CollectingFragmentBoundsIterator {
fn new(node_address: OpaqueNode) -> CollectingFragmentBoundsIterator {
CollectingFragmentBoundsIterator {
impl CollectingFragmentOverflowIterator {
fn new(node_address: OpaqueNode) -> CollectingFragmentOverflowIterator {
CollectingFragmentOverflowIterator {
node_address: node_address,
rects: Vec::new(),
}
}
}
impl FragmentBoundsIterator for CollectingFragmentBoundsIterator {
impl FragmentOverflowIterator for CollectingFragmentOverflowIterator {
fn process(&mut self, _: &Fragment, bounds: Rect<Au>) {
self.rects.push(bounds);
}