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auto merge of #5121 : glennw/servo/transparent-hover, r=mbrubeck

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Move culling of transparent display items to paint task rather than display list builder, so that hit testing detects mouse over on transparent background elements.
This commit is contained in:
bors-servo 2015-03-02 19:42:49 -07:00
commit ac4a690e8f
2 changed files with 12 additions and 12 deletions
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5
components/gfx/display_list/mod.rs
View file

@ -28,6 +28,7 @@ use azure::azure_hl::{Color};
use collections::dlist::{self, DList};
use geom::{Point2D, Rect, SideOffsets2D, Size2D, Matrix2D};
use geom::approxeq::ApproxEq;
use geom::num::Zero;
use libc::uintptr_t;
use paint_task::PaintLayer;
@ -912,7 +913,9 @@ impl DisplayItem {
match *self {
DisplayItem::SolidColorClass(ref solid_color) => {
paint_context.draw_solid_color(&solid_color.base.bounds, solid_color.color)
if !solid_color.color.a.approx_eq(&0.0) {
paint_context.draw_solid_color(&solid_color.base.bounds, solid_color.color)
}
}
DisplayItem::TextClass(ref text) => {

19
components/layout/display_list_builder.rs
View file

@ -21,7 +21,6 @@ use list_item::ListItemFlow;
use model;
use util::{OpaqueNodeMethods, ToGfxColor};
use geom::approxeq::ApproxEq;
use geom::{Point2D, Rect, Size2D, SideOffsets2D};
use gfx::color;
use gfx::display_list::{BLUR_INFLATION_FACTOR, BaseDisplayItem, BorderDisplayItem};
@ -291,16 +290,14 @@ impl FragmentDisplayListBuilding for Fragment {
// inefficient. What we really want is something like "nearest ancestor element that
// doesn't have a fragment".
let background_color = style.resolve_color(style.get_background().background_color);
if !background_color.alpha.approx_eq(&0.0) {
display_list.push(DisplayItem::SolidColorClass(box SolidColorDisplayItem {
base: BaseDisplayItem::new(*absolute_bounds,
DisplayItemMetadata::new(self.node,
style,
Cursor::DefaultCursor),
clip.clone()),
color: background_color.to_gfx_color(),
}), level);
}
display_list.push(DisplayItem::SolidColorClass(box SolidColorDisplayItem {
base: BaseDisplayItem::new(*absolute_bounds,
DisplayItemMetadata::new(self.node,
style,
Cursor::DefaultCursor),
clip.clone()),
color: background_color.to_gfx_color(),
}), level);
// The background image is painted on top of the background color.
// Implements background image, per spec: