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layout: Use the new append_from method to get rid of a bunch of moves
in display list construction. These were showing up in the profile.
This commit is contained in:
Patrick Walton
parent
3aad350a64
commit
93bf69a6fe
4 changed files with 96 additions and 99 deletions
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@ -36,6 +36,7 @@ use gfx::render_task::RenderLayer;
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use servo_msg::compositor_msg::{FixedPosition, Scrollable};
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use servo_msg::constellation_msg::{ConstellationChan, FrameRectMsg};
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use servo_net::image::holder::ImageHolder;
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use servo_util::dlist;
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use servo_util::geometry::{mod, Au, ZERO_RECT};
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use servo_util::logical_geometry::{LogicalRect, WritingMode};
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use servo_util::opts;
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@ -117,12 +118,10 @@ impl FragmentDisplayListBuilding for Fragment {
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// doesn't have a fragment".
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let background_color = style.resolve_color(style.get_background().background_color);
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if !background_color.alpha.approx_eq(&0.0) {
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let display_item = box SolidColorDisplayItem {
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list.push(SolidColorDisplayItemClass(box SolidColorDisplayItem {
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base: BaseDisplayItem::new(*absolute_bounds, self.node, level, *clip_rect),
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color: background_color.to_gfx_color(),
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};
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list.push(SolidColorDisplayItemClass(display_item))
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}));
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}
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// The background image is painted on top of the background color.
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@ -205,13 +204,12 @@ impl FragmentDisplayListBuilding for Fragment {
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};
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// Create the image display item.
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let image_display_item = ImageDisplayItemClass(box ImageDisplayItem {
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list.push(ImageDisplayItemClass(box ImageDisplayItem {
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base: BaseDisplayItem::new(bounds, self.node, level, clip_rect),
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image: image.clone(),
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stretch_size: Size2D(Au::from_px(image.width as int),
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Au::from_px(image.height as int)),
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});
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list.push(image_display_item)
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}));
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}
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/// Adds the display items necessary to paint the borders of this fragment to a display list if
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@ -233,7 +231,7 @@ impl FragmentDisplayListBuilding for Fragment {
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let left_color = style.resolve_color(style.get_border().border_left_color);
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// Append the border to the display list.
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let border_display_item = box BorderDisplayItem {
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list.push(BorderDisplayItemClass(box BorderDisplayItem {
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base: BaseDisplayItem::new(*abs_bounds, self.node, level, *clip_rect),
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border: border.to_physical(style.writing_mode),
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color: SideOffsets2D::new(top_color.to_gfx_color(),
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@ -244,9 +242,7 @@ impl FragmentDisplayListBuilding for Fragment {
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style.get_border().border_right_style,
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style.get_border().border_bottom_style,
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style.get_border().border_left_style)
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};
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list.push(BorderDisplayItemClass(border_display_item))
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}));
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}
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fn build_debug_borders_around_text_fragments(&self,
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@ -263,7 +259,7 @@ impl FragmentDisplayListBuilding for Fragment {
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fragment_bounds.size);
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// Compute the text fragment bounds and draw a border surrounding them.
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let border_display_item = box BorderDisplayItem {
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display_list.push(BorderDisplayItemClass(box BorderDisplayItem {
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base: BaseDisplayItem::new(absolute_fragment_bounds,
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self.node,
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ContentStackingLevel,
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@ -271,8 +267,7 @@ impl FragmentDisplayListBuilding for Fragment {
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border: SideOffsets2D::new_all_same(Au::from_px(1)),
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color: SideOffsets2D::new_all_same(color::rgb(0, 0, 200)),
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style: SideOffsets2D::new_all_same(border_style::solid)
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};
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display_list.push(BorderDisplayItemClass(border_display_item));
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}));
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// Draw a rectangle representing the baselines.
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let ascent = text_fragment.run.ascent();
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@ -303,7 +298,7 @@ impl FragmentDisplayListBuilding for Fragment {
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fragment_bounds.size);
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// This prints a debug border around the border of this fragment.
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let border_display_item = box BorderDisplayItem {
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display_list.push(BorderDisplayItemClass(box BorderDisplayItem {
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base: BaseDisplayItem::new(absolute_fragment_bounds,
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self.node,
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ContentStackingLevel,
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@ -311,8 +306,7 @@ impl FragmentDisplayListBuilding for Fragment {
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border: SideOffsets2D::new_all_same(Au::from_px(1)),
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color: SideOffsets2D::new_all_same(color::rgb(0, 0, 200)),
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style: SideOffsets2D::new_all_same(border_style::solid)
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};
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display_list.push(BorderDisplayItemClass(border_display_item))
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}));
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}
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fn build_display_list(&mut self,
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@ -442,7 +436,7 @@ impl FragmentDisplayListBuilding for Fragment {
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tmp.to_physical(self.style.writing_mode, container_size) + flow_origin
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};
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let text_display_item = box TextDisplayItem {
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display_list.push(TextDisplayItemClass(box TextDisplayItem {
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base: BaseDisplayItem::new(absolute_content_box,
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self.node,
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ContentStackingLevel,
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@ -452,8 +446,7 @@ impl FragmentDisplayListBuilding for Fragment {
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text_color: self.style().get_color().color.to_gfx_color(),
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orientation: orientation,
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baseline_origin: baseline_origin,
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};
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display_list.push(TextDisplayItemClass(text_display_item));
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}));
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// Create display items for text decoration
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{
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@ -522,16 +515,14 @@ impl FragmentDisplayListBuilding for Fragment {
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debug!("(building display list) building image fragment");
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// Place the image into the display list.
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let image_display_item = box ImageDisplayItem {
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display_list.push(ImageDisplayItemClass(box ImageDisplayItem {
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base: BaseDisplayItem::new(absolute_content_box,
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self.node,
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ContentStackingLevel,
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*clip_rect),
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image: image.clone(),
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stretch_size: absolute_content_box.size,
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};
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display_list.push(ImageDisplayItemClass(image_display_item))
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}));
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}
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None => {
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// No image data at all? Do nothing.
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@ -630,38 +621,35 @@ impl BlockFlowDisplayListBuilding for BlockFlow {
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.relative_containing_block_size);
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// Add the box that starts the block context.
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let mut display_list = DisplayList::new();
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self.fragment.build_display_list(&mut display_list,
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self.base.display_list = DisplayList::new();
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let absolute_position =
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self.base.abs_position.add_size(&relative_offset.to_physical(self.base.writing_mode));
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self.fragment.build_display_list(&mut self.base.display_list,
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layout_context,
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self.base.abs_position.add_size(
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&relative_offset.to_physical(self.base.writing_mode)),
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absolute_position,
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background_border_level,
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&self.base.clip_rect);
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let mut child_layers = DList::new();
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for kid in self.base.child_iter() {
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self.base.layers = DList::new();
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for kid in self.base.children.iter_mut() {
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if kid.is_absolutely_positioned() {
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// All absolute flows will be handled by their containing block.
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continue
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}
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display_list.push_all_move(mem::replace(&mut flow::mut_base(kid).display_list,
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DisplayList::new()));
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child_layers.append(mem::replace(&mut flow::mut_base(kid).layers, DList::new()))
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self.base.display_list.append_from(&mut flow::mut_base(kid).display_list);
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dlist::append_from(&mut self.base.layers, &mut flow::mut_base(kid).layers)
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}
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// Process absolute descendant links.
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for abs_descendant_link in self.base.abs_descendants.iter() {
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// TODO(pradeep): Send in our absolute position directly.
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display_list.push_all_move(mem::replace(
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&mut flow::mut_base(abs_descendant_link).display_list,
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DisplayList::new()));
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child_layers.append(mem::replace(&mut flow::mut_base(abs_descendant_link).layers,
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DList::new()));
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self.base
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.display_list
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.append_from(&mut flow::mut_base(abs_descendant_link).display_list);
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dlist::append_from(&mut self.base.layers,
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&mut flow::mut_base(abs_descendant_link).layers)
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}
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self.base.display_list = display_list;
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self.base.layers = child_layers
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}
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fn build_display_list_for_absolutely_positioned_block(&mut self,
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@ -672,9 +660,7 @@ impl BlockFlowDisplayListBuilding for BlockFlow {
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!self.base.flags.needs_layer() {
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// We didn't need a layer.
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let z_index = self.fragment.style().get_box().z_index.number_or_zero();
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let level = PositionedDescendantStackingLevel(z_index);
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self.base.display_list = mem::replace(&mut self.base.display_list,
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DisplayList::new()).flatten(level);
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self.base.display_list.flatten(PositionedDescendantStackingLevel(z_index));
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return
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}
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@ -690,10 +676,10 @@ impl BlockFlowDisplayListBuilding for BlockFlow {
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} else {
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Scrollable
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};
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let display_list = mem::replace(&mut self.base.display_list, DisplayList::new());
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self.base.display_list.flatten(ContentStackingLevel);
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let new_layer = RenderLayer {
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id: self.layer_id(0),
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display_list: Arc::new(display_list.flatten(ContentStackingLevel)),
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display_list: Arc::new(mem::replace(&mut self.base.display_list, DisplayList::new())),
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position: Rect(origin, size),
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background_color: color::rgba(1.0, 1.0, 1.0, 0.0),
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scroll_policy: scroll_policy,
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@ -703,8 +689,6 @@ impl BlockFlowDisplayListBuilding for BlockFlow {
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fn build_display_list_for_floating_block(&mut self, layout_context: &LayoutContext) {
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self.build_display_list_for_block(layout_context, RootOfStackingContextLevel);
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self.base.display_list = mem::replace(&mut self.base.display_list,
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DisplayList::new()).flatten(FloatStackingLevel)
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self.base.display_list.flatten(FloatStackingLevel)
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}
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}
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