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Remove concept of Layers from Servo

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Layers were a feature of the legacy drawing path. If we re-add them at
some point, it probably makes more sense to make them a product of
display list inspection.

This change also remove a bunch of dead painting code.
This commit is contained in:
Martin Robinson 2016-10-19 15:14:02 +02:00
parent e667e62f0c
commit ccb7ab926a
21 changed files with 57 additions and 745 deletions
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12
components/layout/display_list_builder.rs
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@ -19,13 +19,13 @@ use euclid::{Matrix4D, Point2D, Radians, Rect, SideOffsets2D, Size2D};
use flex::FlexFlow;
use flow::{BaseFlow, Flow, IS_ABSOLUTELY_POSITIONED};
use flow_ref;
use fragment::{CoordinateSystem, Fragment, HAS_LAYER, ImageFragmentInfo, ScannedTextFragmentInfo};
use fragment::{CoordinateSystem, Fragment, ImageFragmentInfo, ScannedTextFragmentInfo};
use fragment::SpecificFragmentInfo;
use gfx::display_list::{BLUR_INFLATION_FACTOR, BaseDisplayItem, BorderDisplayItem};
use gfx::display_list::{BorderRadii, BoxShadowClipMode, BoxShadowDisplayItem, ClippingRegion};
use gfx::display_list::{DisplayItem, DisplayItemMetadata, DisplayListSection, GradientDisplayItem};
use gfx::display_list::{GradientStop, IframeDisplayItem, ImageDisplayItem, WebGLDisplayItem};
use gfx::display_list::{LayerInfo, LineDisplayItem, OpaqueNode};
use gfx::display_list::{LineDisplayItem, OpaqueNode};
use gfx::display_list::{SolidColorDisplayItem, StackingContext, StackingContextType};
use gfx::display_list::{TextDisplayItem, TextOrientation, WebRenderImageInfo};
use gfx_traits::{ScrollPolicy, StackingContextId, color};
@ -1410,12 +1410,6 @@ impl FragmentDisplayListBuilding for Fragment {
filters.push(Filter::Opacity(effects.opacity))
}
let layer_info = if self.flags.contains(HAS_LAYER) {
Some(LayerInfo::new(self.layer_id(), scroll_policy, None, color::transparent()))
} else {
None
};
let transform_style = self.style().get_used_transform_style();
let establishes_3d_context = scrolls_overflow_area ||
transform_style == transform_style::T::flat;
@ -1436,7 +1430,7 @@ impl FragmentDisplayListBuilding for Fragment {
transform,
perspective,
establishes_3d_context,
layer_info,
scroll_policy,
scroll_id)
}