mirror of
https://github.com/servo/servo.git
synced 2025-08-05 21:50:18 +01:00
Move DisplayList drawing logic to struct implementation
This will be useful when PaintLayers that contain DisplayLists instead of StackingContexts need to draw themselves. This is a simple preparatory refactoring and doesn't change any behavior.
This commit is contained in:
Martin Robinson
parent
d588ce8d85
commit
117c278936
1 changed files with 112 additions and 101 deletions
|
|
@ -17,7 +17,7 @@
|
|||
#![deny(unsafe_code)]
|
||||
|
||||
use azure::azure::AzFloat;
|
||||
use azure::azure_hl::Color;
|
||||
use azure::azure_hl::{Color, DrawTarget};
|
||||
use display_list::optimizer::DisplayListOptimizer;
|
||||
use euclid::approxeq::ApproxEq;
|
||||
use euclid::num::Zero;
|
||||
|
|
@ -239,6 +239,113 @@ impl DisplayList {
|
|||
paint_layer.stacking_context.print_with_tree(print_tree);
|
||||
}
|
||||
}
|
||||
|
||||
/// Draws the DisplayList in stacking context order according to the steps in CSS 2.1 § E.2.
|
||||
fn draw_into_context(&self,
|
||||
draw_target: &DrawTarget,
|
||||
paint_context: &mut PaintContext,
|
||||
transform: &Matrix4,
|
||||
clip_rect: Option<&Rect<Au>>) {
|
||||
let mut paint_subcontext = PaintContext {
|
||||
draw_target: draw_target.clone(),
|
||||
font_context: &mut *paint_context.font_context,
|
||||
page_rect: paint_context.page_rect,
|
||||
screen_rect: paint_context.screen_rect,
|
||||
clip_rect: clip_rect.map(|clip_rect| *clip_rect),
|
||||
transient_clip: None,
|
||||
layer_kind: paint_context.layer_kind,
|
||||
};
|
||||
|
||||
if opts::get().dump_display_list_optimized {
|
||||
self.print(format!("Optimized display list. Tile bounds: {:?}",
|
||||
paint_context.page_rect));
|
||||
}
|
||||
|
||||
// Set up our clip rect and transform.
|
||||
let old_transform = paint_subcontext.draw_target.get_transform();
|
||||
let xform_2d = Matrix2D::new(transform.m11, transform.m12,
|
||||
transform.m21, transform.m22,
|
||||
transform.m41, transform.m42);
|
||||
paint_subcontext.draw_target.set_transform(&xform_2d);
|
||||
paint_subcontext.push_clip_if_applicable();
|
||||
|
||||
// Steps 1 and 2: Borders and background for the root.
|
||||
for display_item in &self.background_and_borders {
|
||||
display_item.draw_into_context(&mut paint_subcontext)
|
||||
}
|
||||
|
||||
// Step 3: Positioned descendants with negative z-indices.
|
||||
for positioned_kid in &self.children {
|
||||
if positioned_kid.z_index >= 0 {
|
||||
break
|
||||
}
|
||||
let new_transform =
|
||||
transform.translate(positioned_kid.bounds
|
||||
.origin
|
||||
.x
|
||||
.to_nearest_px() as AzFloat,
|
||||
positioned_kid.bounds
|
||||
.origin
|
||||
.y
|
||||
.to_nearest_px() as AzFloat,
|
||||
0.0);
|
||||
positioned_kid.optimize_and_draw_into_context(&mut paint_subcontext,
|
||||
&new_transform,
|
||||
Some(&positioned_kid.overflow))
|
||||
}
|
||||
|
||||
// Step 4: Block backgrounds and borders.
|
||||
for display_item in &self.block_backgrounds_and_borders {
|
||||
display_item.draw_into_context(&mut paint_subcontext)
|
||||
}
|
||||
|
||||
// Step 5: Floats.
|
||||
for display_item in &self.floats {
|
||||
display_item.draw_into_context(&mut paint_subcontext)
|
||||
}
|
||||
|
||||
// TODO(pcwalton): Step 6: Inlines that generate stacking contexts.
|
||||
|
||||
// Step 7: Content.
|
||||
for display_item in &self.content {
|
||||
display_item.draw_into_context(&mut paint_subcontext)
|
||||
}
|
||||
|
||||
// Step 8: Positioned descendants with `z-index: auto`.
|
||||
for display_item in &self.positioned_content {
|
||||
display_item.draw_into_context(&mut paint_subcontext)
|
||||
}
|
||||
|
||||
// Step 9: Positioned descendants with nonnegative, numeric z-indices.
|
||||
for positioned_kid in &self.children {
|
||||
if positioned_kid.z_index < 0 {
|
||||
continue
|
||||
}
|
||||
let new_transform =
|
||||
transform.translate(positioned_kid.bounds
|
||||
.origin
|
||||
.x
|
||||
.to_nearest_px() as AzFloat,
|
||||
positioned_kid.bounds
|
||||
.origin
|
||||
.y
|
||||
.to_nearest_px() as AzFloat,
|
||||
0.0);
|
||||
positioned_kid.optimize_and_draw_into_context(&mut paint_subcontext,
|
||||
&new_transform,
|
||||
Some(&positioned_kid.overflow))
|
||||
}
|
||||
|
||||
// Step 10: Outlines.
|
||||
for display_item in &self.outlines {
|
||||
display_item.draw_into_context(&mut paint_subcontext)
|
||||
}
|
||||
|
||||
// Undo our clipping and transform.
|
||||
paint_subcontext.remove_transient_clip_if_applicable();
|
||||
paint_subcontext.pop_clip_if_applicable();
|
||||
paint_subcontext.draw_target.set_transform(&old_transform)
|
||||
}
|
||||
}
|
||||
|
||||
#[derive(HeapSizeOf, Deserialize, Serialize)]
|
||||
|
|
@ -343,107 +450,11 @@ impl StackingContext {
|
|||
clip_rect: Option<&Rect<Au>>) {
|
||||
let temporary_draw_target =
|
||||
paint_context.get_or_create_temporary_draw_target(&self.filters, self.blend_mode);
|
||||
{
|
||||
let mut paint_subcontext = PaintContext {
|
||||
draw_target: temporary_draw_target.clone(),
|
||||
font_context: &mut *paint_context.font_context,
|
||||
page_rect: paint_context.page_rect,
|
||||
screen_rect: paint_context.screen_rect,
|
||||
clip_rect: clip_rect.map(|clip_rect| *clip_rect),
|
||||
transient_clip: None,
|
||||
layer_kind: paint_context.layer_kind,
|
||||
};
|
||||
|
||||
if opts::get().dump_display_list_optimized {
|
||||
display_list.print(format!("Optimized display list. Tile bounds: {:?}",
|
||||
paint_context.page_rect));
|
||||
}
|
||||
|
||||
// Set up our clip rect and transform.
|
||||
let old_transform = paint_subcontext.draw_target.get_transform();
|
||||
let xform_2d = Matrix2D::new(transform.m11, transform.m12,
|
||||
transform.m21, transform.m22,
|
||||
transform.m41, transform.m42);
|
||||
paint_subcontext.draw_target.set_transform(&xform_2d);
|
||||
paint_subcontext.push_clip_if_applicable();
|
||||
|
||||
// Steps 1 and 2: Borders and background for the root.
|
||||
for display_item in &display_list.background_and_borders {
|
||||
display_item.draw_into_context(&mut paint_subcontext)
|
||||
}
|
||||
|
||||
// Step 3: Positioned descendants with negative z-indices.
|
||||
for positioned_kid in &display_list.children {
|
||||
if positioned_kid.z_index >= 0 {
|
||||
break
|
||||
}
|
||||
let new_transform =
|
||||
transform.translate(positioned_kid.bounds
|
||||
.origin
|
||||
.x
|
||||
.to_nearest_px() as AzFloat,
|
||||
positioned_kid.bounds
|
||||
.origin
|
||||
.y
|
||||
.to_nearest_px() as AzFloat,
|
||||
0.0);
|
||||
positioned_kid.optimize_and_draw_into_context(&mut paint_subcontext,
|
||||
&new_transform,
|
||||
Some(&positioned_kid.overflow))
|
||||
}
|
||||
|
||||
// Step 4: Block backgrounds and borders.
|
||||
for display_item in &display_list.block_backgrounds_and_borders {
|
||||
display_item.draw_into_context(&mut paint_subcontext)
|
||||
}
|
||||
|
||||
// Step 5: Floats.
|
||||
for display_item in &display_list.floats {
|
||||
display_item.draw_into_context(&mut paint_subcontext)
|
||||
}
|
||||
|
||||
// TODO(pcwalton): Step 6: Inlines that generate stacking contexts.
|
||||
|
||||
// Step 7: Content.
|
||||
for display_item in &display_list.content {
|
||||
display_item.draw_into_context(&mut paint_subcontext)
|
||||
}
|
||||
|
||||
// Step 8: Positioned descendants with `z-index: auto`.
|
||||
for display_item in &display_list.positioned_content {
|
||||
display_item.draw_into_context(&mut paint_subcontext)
|
||||
}
|
||||
|
||||
// Step 9: Positioned descendants with nonnegative, numeric z-indices.
|
||||
for positioned_kid in &self.display_list.children {
|
||||
if positioned_kid.z_index < 0 {
|
||||
continue
|
||||
}
|
||||
let new_transform =
|
||||
transform.translate(positioned_kid.bounds
|
||||
.origin
|
||||
.x
|
||||
.to_nearest_px() as AzFloat,
|
||||
positioned_kid.bounds
|
||||
.origin
|
||||
.y
|
||||
.to_nearest_px() as AzFloat,
|
||||
0.0);
|
||||
positioned_kid.optimize_and_draw_into_context(&mut paint_subcontext,
|
||||
&new_transform,
|
||||
Some(&positioned_kid.overflow))
|
||||
}
|
||||
|
||||
// Step 10: Outlines.
|
||||
for display_item in &display_list.outlines {
|
||||
display_item.draw_into_context(&mut paint_subcontext)
|
||||
}
|
||||
|
||||
// Undo our clipping and transform.
|
||||
paint_subcontext.remove_transient_clip_if_applicable();
|
||||
paint_subcontext.pop_clip_if_applicable();
|
||||
paint_subcontext.draw_target.set_transform(&old_transform)
|
||||
}
|
||||
display_list.draw_into_context(&temporary_draw_target,
|
||||
paint_context,
|
||||
transform,
|
||||
clip_rect);
|
||||
|
||||
paint_context.draw_temporary_draw_target_if_necessary(&temporary_draw_target,
|
||||
&self.filters,
|
||||
|
|
|
|||
Loading…
Add table
Add a link
Reference in a new issue