mirror of
https://github.com/servo/servo.git
synced 2025-07-02 13:03:43 +01:00
106 lines
3.5 KiB
Rust
106 lines
3.5 KiB
Rust
/* This Source Code Form is subject to the terms of the Mozilla Public
|
|
* License, v. 2.0. If a copy of the MPL was not distributed with this
|
|
* file, You can obtain one at https://mozilla.org/MPL/2.0/. */
|
|
|
|
use crate::fragments::{BoxFragment, Fragment};
|
|
use crate::geom::physical::{Rect, Vec2};
|
|
use crate::style_ext::ComputedValuesExt;
|
|
use app_units::Au;
|
|
use style::values::computed::Length;
|
|
use webrender_api::CommonItemProperties;
|
|
|
|
pub struct DisplayListBuilder {
|
|
pipeline_id: webrender_api::PipelineId,
|
|
pub wr: webrender_api::DisplayListBuilder,
|
|
pub is_contentful: bool,
|
|
}
|
|
|
|
impl DisplayListBuilder {
|
|
pub fn new(
|
|
pipeline_id: webrender_api::PipelineId,
|
|
viewport_size: webrender_api::units::LayoutSize,
|
|
) -> Self {
|
|
Self {
|
|
pipeline_id,
|
|
is_contentful: false,
|
|
wr: webrender_api::DisplayListBuilder::new(pipeline_id, viewport_size),
|
|
}
|
|
}
|
|
}
|
|
|
|
/// Contentful paint, for the purpose of
|
|
/// https://w3c.github.io/paint-timing/#first-contentful-paint
|
|
/// (i.e. the display list contains items of type text,
|
|
/// image, non-white canvas or SVG). Used by metrics.
|
|
pub struct IsContentful(pub bool);
|
|
|
|
impl Fragment {
|
|
pub(crate) fn build_display_list(
|
|
&self,
|
|
builder: &mut DisplayListBuilder,
|
|
is_contentful: &mut IsContentful,
|
|
containing_block: &Rect<Length>,
|
|
) {
|
|
match self {
|
|
Fragment::Box(b) => b.build_display_list(builder, is_contentful, containing_block),
|
|
Fragment::Anonymous(a) => {
|
|
let rect = a
|
|
.rect
|
|
.to_physical(a.mode, containing_block)
|
|
.translate(&containing_block.top_left);
|
|
for child in &a.children {
|
|
child.build_display_list(builder, is_contentful, &rect)
|
|
}
|
|
},
|
|
Fragment::Text(_) => {
|
|
is_contentful.0 = true;
|
|
// FIXME
|
|
},
|
|
}
|
|
}
|
|
}
|
|
|
|
impl BoxFragment {
|
|
fn build_display_list(
|
|
&self,
|
|
builder: &mut DisplayListBuilder,
|
|
is_contentful: &mut IsContentful,
|
|
containing_block: &Rect<Length>,
|
|
) {
|
|
let background_color = self
|
|
.style
|
|
.resolve_color(self.style.clone_background_color());
|
|
if background_color.alpha > 0 {
|
|
let clip_rect = self
|
|
.border_rect()
|
|
.to_physical(self.style.writing_mode(), containing_block)
|
|
.translate(&containing_block.top_left)
|
|
.into();
|
|
let common = CommonItemProperties {
|
|
clip_rect,
|
|
clip_id: webrender_api::ClipId::root(builder.pipeline_id),
|
|
spatial_id: webrender_api::SpatialId::root_scroll_node(builder.pipeline_id),
|
|
hit_info: None,
|
|
// TODO(gw): Make use of the WR backface visibility functionality.
|
|
is_backface_visible: true,
|
|
};
|
|
builder.wr.push_rect(&common, rgba(background_color))
|
|
}
|
|
let content_rect = self
|
|
.content_rect
|
|
.to_physical(self.style.writing_mode(), containing_block)
|
|
.translate(&containing_block.top_left);
|
|
for child in &self.children {
|
|
child.build_display_list(builder, is_contentful, &content_rect)
|
|
}
|
|
}
|
|
}
|
|
|
|
fn rgba(rgba: cssparser::RGBA) -> webrender_api::ColorF {
|
|
webrender_api::ColorF::new(
|
|
rgba.red_f32(),
|
|
rgba.green_f32(),
|
|
rgba.blue_f32(),
|
|
rgba.alpha_f32(),
|
|
)
|
|
}
|