mirror of
https://github.com/servo/servo.git
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5937f62352
This will allow Servo to create ClipScrollNodes later during display list construction, which will be necessary once rounded rectangles are removed from the LocalClip structure. Instead of keeping track of the ClipId of each ClipScrollNode, we keep track of its index in an array of ClipScrollNodes. This will allow us to access them without a hash lookup.
576 lines
26 KiB
Rust
576 lines
26 KiB
Rust
/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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// TODO(gw): This contains helper traits and implementations for converting Servo display lists
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// into WebRender display lists. In the future, this step should be completely removed.
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// This might be achieved by sharing types between WR and Servo display lists, or
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// completely converting layout to directly generate WebRender display lists, for example.
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use app_units::Au;
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use euclid::{Point2D, Vector2D, Rect, SideOffsets2D, Size2D};
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use gfx::display_list::{BorderDetails, BorderRadii, BoxShadowClipMode, ClipScrollNode};
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use gfx::display_list::{ClipScrollNodeIndex, ClipScrollNodeType, ClippingRegion, DisplayItem};
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use gfx::display_list::{DisplayList, StackingContextType};
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use msg::constellation_msg::PipelineId;
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use style::computed_values::{image_rendering, mix_blend_mode, transform_style};
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use style::values::computed::{BorderStyle, Filter};
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use style::values::generics::effects::Filter as GenericFilter;
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use webrender_api::{self, ClipAndScrollInfo, ClipId, ClipMode, ComplexClipRegion};
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use webrender_api::{DisplayListBuilder, ExtendMode, LayoutTransform};
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pub trait WebRenderDisplayListConverter {
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fn convert_to_webrender(&self, pipeline_id: PipelineId) -> DisplayListBuilder;
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}
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trait WebRenderDisplayItemConverter {
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fn prim_info(&self) -> webrender_api::LayoutPrimitiveInfo;
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fn convert_to_webrender(
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&self,
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builder: &mut DisplayListBuilder,
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clip_scroll_nodes: &[ClipScrollNode],
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clip_ids: &mut Vec<Option<ClipId>>,
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current_clip_and_scroll_info: &mut ClipAndScrollInfo
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);
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}
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trait ToBorderStyle {
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fn to_border_style(&self) -> webrender_api::BorderStyle;
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}
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impl ToBorderStyle for BorderStyle {
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fn to_border_style(&self) -> webrender_api::BorderStyle {
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match *self {
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BorderStyle::none => webrender_api::BorderStyle::None,
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BorderStyle::solid => webrender_api::BorderStyle::Solid,
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BorderStyle::double => webrender_api::BorderStyle::Double,
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BorderStyle::dotted => webrender_api::BorderStyle::Dotted,
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BorderStyle::dashed => webrender_api::BorderStyle::Dashed,
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BorderStyle::hidden => webrender_api::BorderStyle::Hidden,
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BorderStyle::groove => webrender_api::BorderStyle::Groove,
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BorderStyle::ridge => webrender_api::BorderStyle::Ridge,
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BorderStyle::inset => webrender_api::BorderStyle::Inset,
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BorderStyle::outset => webrender_api::BorderStyle::Outset,
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}
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}
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}
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trait ToBorderWidths {
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fn to_border_widths(&self) -> webrender_api::BorderWidths;
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}
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impl ToBorderWidths for SideOffsets2D<Au> {
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fn to_border_widths(&self) -> webrender_api::BorderWidths {
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webrender_api::BorderWidths {
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left: self.left.to_f32_px(),
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top: self.top.to_f32_px(),
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right: self.right.to_f32_px(),
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bottom: self.bottom.to_f32_px(),
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}
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}
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}
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trait ToBoxShadowClipMode {
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fn to_clip_mode(&self) -> webrender_api::BoxShadowClipMode;
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}
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impl ToBoxShadowClipMode for BoxShadowClipMode {
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fn to_clip_mode(&self) -> webrender_api::BoxShadowClipMode {
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match *self {
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BoxShadowClipMode::Inset => webrender_api::BoxShadowClipMode::Inset,
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BoxShadowClipMode::Outset => webrender_api::BoxShadowClipMode::Outset,
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}
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}
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}
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trait ToSizeF {
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fn to_sizef(&self) -> webrender_api::LayoutSize;
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}
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trait ToPointF {
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fn to_pointf(&self) -> webrender_api::LayoutPoint;
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}
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trait ToVectorF {
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fn to_vectorf(&self) -> webrender_api::LayoutVector2D;
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}
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impl ToPointF for Point2D<Au> {
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fn to_pointf(&self) -> webrender_api::LayoutPoint {
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webrender_api::LayoutPoint::new(self.x.to_f32_px(), self.y.to_f32_px())
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}
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}
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impl ToVectorF for Vector2D<Au> {
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fn to_vectorf(&self) -> webrender_api::LayoutVector2D {
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webrender_api::LayoutVector2D::new(self.x.to_f32_px(), self.y.to_f32_px())
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}
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}
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impl ToSizeF for Size2D<Au> {
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fn to_sizef(&self) -> webrender_api::LayoutSize {
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webrender_api::LayoutSize::new(self.width.to_f32_px(), self.height.to_f32_px())
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}
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}
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pub trait ToRectF {
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fn to_rectf(&self) -> webrender_api::LayoutRect;
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}
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impl ToRectF for Rect<Au> {
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fn to_rectf(&self) -> webrender_api::LayoutRect {
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let x = self.origin.x.to_f32_px();
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let y = self.origin.y.to_f32_px();
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let w = self.size.width.to_f32_px();
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let h = self.size.height.to_f32_px();
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let point = webrender_api::LayoutPoint::new(x, y);
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let size = webrender_api::LayoutSize::new(w, h);
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webrender_api::LayoutRect::new(point, size)
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}
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}
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pub trait ToBorderRadius {
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fn to_border_radius(&self) -> webrender_api::BorderRadius;
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}
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impl ToBorderRadius for BorderRadii<Au> {
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fn to_border_radius(&self) -> webrender_api::BorderRadius {
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webrender_api::BorderRadius {
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top_left: self.top_left.to_sizef(),
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top_right: self.top_right.to_sizef(),
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bottom_left: self.bottom_left.to_sizef(),
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bottom_right: self.bottom_right.to_sizef(),
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}
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}
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}
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pub trait ToMixBlendMode {
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fn to_mix_blend_mode(&self) -> webrender_api::MixBlendMode;
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}
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impl ToMixBlendMode for mix_blend_mode::T {
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fn to_mix_blend_mode(&self) -> webrender_api::MixBlendMode {
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match *self {
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mix_blend_mode::T::normal => webrender_api::MixBlendMode::Normal,
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mix_blend_mode::T::multiply => webrender_api::MixBlendMode::Multiply,
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mix_blend_mode::T::screen => webrender_api::MixBlendMode::Screen,
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mix_blend_mode::T::overlay => webrender_api::MixBlendMode::Overlay,
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mix_blend_mode::T::darken => webrender_api::MixBlendMode::Darken,
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mix_blend_mode::T::lighten => webrender_api::MixBlendMode::Lighten,
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mix_blend_mode::T::color_dodge => webrender_api::MixBlendMode::ColorDodge,
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mix_blend_mode::T::color_burn => webrender_api::MixBlendMode::ColorBurn,
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mix_blend_mode::T::hard_light => webrender_api::MixBlendMode::HardLight,
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mix_blend_mode::T::soft_light => webrender_api::MixBlendMode::SoftLight,
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mix_blend_mode::T::difference => webrender_api::MixBlendMode::Difference,
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mix_blend_mode::T::exclusion => webrender_api::MixBlendMode::Exclusion,
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mix_blend_mode::T::hue => webrender_api::MixBlendMode::Hue,
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mix_blend_mode::T::saturation => webrender_api::MixBlendMode::Saturation,
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mix_blend_mode::T::color => webrender_api::MixBlendMode::Color,
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mix_blend_mode::T::luminosity => webrender_api::MixBlendMode::Luminosity,
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}
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}
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}
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trait ToImageRendering {
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fn to_image_rendering(&self) -> webrender_api::ImageRendering;
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}
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impl ToImageRendering for image_rendering::T {
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fn to_image_rendering(&self) -> webrender_api::ImageRendering {
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match *self {
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image_rendering::T::crisp_edges => webrender_api::ImageRendering::CrispEdges,
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image_rendering::T::auto => webrender_api::ImageRendering::Auto,
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image_rendering::T::pixelated => webrender_api::ImageRendering::Pixelated,
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}
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}
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}
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trait ToFilterOps {
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fn to_filter_ops(&self) -> Vec<webrender_api::FilterOp>;
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}
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impl ToFilterOps for Vec<Filter> {
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fn to_filter_ops(&self) -> Vec<webrender_api::FilterOp> {
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let mut result = Vec::with_capacity(self.len());
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for filter in self.iter() {
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match *filter {
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GenericFilter::Blur(radius) => result.push(webrender_api::FilterOp::Blur(radius.px())),
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GenericFilter::Brightness(amount) => result.push(webrender_api::FilterOp::Brightness(amount.0)),
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GenericFilter::Contrast(amount) => result.push(webrender_api::FilterOp::Contrast(amount.0)),
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GenericFilter::Grayscale(amount) => result.push(webrender_api::FilterOp::Grayscale(amount.0)),
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GenericFilter::HueRotate(angle) => result.push(webrender_api::FilterOp::HueRotate(angle.radians())),
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GenericFilter::Invert(amount) => result.push(webrender_api::FilterOp::Invert(amount.0)),
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GenericFilter::Opacity(amount) => result.push(webrender_api::FilterOp::Opacity(amount.0.into())),
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GenericFilter::Saturate(amount) => result.push(webrender_api::FilterOp::Saturate(amount.0)),
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GenericFilter::Sepia(amount) => result.push(webrender_api::FilterOp::Sepia(amount.0)),
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GenericFilter::DropShadow(ref shadow) => match *shadow {},
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}
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}
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result
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}
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}
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pub trait ToTransformStyle {
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fn to_transform_style(&self) -> webrender_api::TransformStyle;
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}
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impl ToTransformStyle for transform_style::T {
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fn to_transform_style(&self) -> webrender_api::TransformStyle {
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match *self {
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transform_style::T::auto | transform_style::T::flat => webrender_api::TransformStyle::Flat,
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transform_style::T::preserve_3d => webrender_api::TransformStyle::Preserve3D,
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}
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}
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}
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impl WebRenderDisplayListConverter for DisplayList {
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fn convert_to_webrender(&self, pipeline_id: PipelineId) -> DisplayListBuilder {
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let mut builder = DisplayListBuilder::with_capacity(pipeline_id.to_webrender(),
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self.bounds().size.to_sizef(),
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1024 * 1024); // 1 MB of space
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let mut current_clip_and_scroll_info = pipeline_id.root_clip_and_scroll_info();
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builder.push_clip_and_scroll_info(current_clip_and_scroll_info);
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let mut clip_ids = Vec::with_capacity(self.clip_scroll_nodes.len());
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clip_ids.resize(self.clip_scroll_nodes.len(), None);
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clip_ids[0] = Some(ClipId::root_scroll_node(pipeline_id.to_webrender()));
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for item in &self.list {
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item.convert_to_webrender(
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&mut builder,
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&self.clip_scroll_nodes,
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&mut clip_ids,
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&mut current_clip_and_scroll_info
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);
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}
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builder
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}
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}
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impl WebRenderDisplayItemConverter for DisplayItem {
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fn prim_info(&self) -> webrender_api::LayoutPrimitiveInfo {
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let tag = match self.base().metadata.pointing {
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Some(cursor) => Some((self.base().metadata.node.0 as u64, cursor as u8)),
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None => None,
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};
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webrender_api::LayoutPrimitiveInfo {
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rect: self.base().bounds.to_rectf(),
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local_clip: self.base().local_clip,
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// TODO(gw): Make use of the WR backface visibility functionality.
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is_backface_visible: true,
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tag: tag,
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}
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}
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fn convert_to_webrender(
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&self,
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builder: &mut DisplayListBuilder,
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clip_scroll_nodes: &[ClipScrollNode],
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clip_ids: &mut Vec<Option<ClipId>>,
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current_clip_and_scroll_info: &mut ClipAndScrollInfo
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) {
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let get_id = |clip_ids: &[Option<ClipId>], index: ClipScrollNodeIndex| -> ClipId {
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match clip_ids[index.0] {
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Some(id) => id,
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None => unreachable!("Tried to use WebRender ClipId before it was defined."),
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}
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};
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let clip_and_scroll_indices = self.base().clipping_and_scrolling;
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let scrolling_id = get_id(clip_ids, clip_and_scroll_indices.scrolling);
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let clip_and_scroll_info = match clip_and_scroll_indices.clipping {
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None => ClipAndScrollInfo::simple(scrolling_id),
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Some(index) => ClipAndScrollInfo::new(scrolling_id, get_id(clip_ids, index)),
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};
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if clip_and_scroll_info != *current_clip_and_scroll_info {
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builder.pop_clip_id();
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builder.push_clip_and_scroll_info(clip_and_scroll_info);
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*current_clip_and_scroll_info = clip_and_scroll_info;
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}
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match *self {
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DisplayItem::SolidColor(ref item) => {
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builder.push_rect(&self.prim_info(), item.color);
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}
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DisplayItem::Text(ref item) => {
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let mut origin = item.baseline_origin.clone();
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let mut glyphs = vec!();
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for slice in item.text_run.natural_word_slices_in_visual_order(&item.range) {
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for glyph in slice.glyphs.iter_glyphs_for_byte_range(&slice.range) {
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let glyph_advance = if glyph.char_is_space() {
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glyph.advance() + item.text_run.extra_word_spacing
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} else {
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glyph.advance()
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};
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if !slice.glyphs.is_whitespace() {
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let glyph_offset = glyph.offset().unwrap_or(Point2D::zero());
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let x = (origin.x + glyph_offset.x).to_f32_px();
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let y = (origin.y + glyph_offset.y).to_f32_px();
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let point = webrender_api::LayoutPoint::new(x, y);
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let glyph = webrender_api::GlyphInstance {
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index: glyph.id(),
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point: point,
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};
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glyphs.push(glyph);
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}
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origin.x = origin.x + glyph_advance;
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};
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}
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if glyphs.len() > 0 {
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builder.push_text(&self.prim_info(),
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&glyphs,
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item.text_run.font_key,
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item.text_color,
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None);
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}
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}
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DisplayItem::Image(ref item) => {
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if let Some(id) = item.webrender_image.key {
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if item.stretch_size.width > Au(0) &&
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item.stretch_size.height > Au(0) {
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builder.push_image(&self.prim_info(),
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item.stretch_size.to_sizef(),
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item.tile_spacing.to_sizef(),
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item.image_rendering.to_image_rendering(),
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id);
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}
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}
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}
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DisplayItem::Border(ref item) => {
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let widths = item.border_widths.to_border_widths();
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let details = match item.details {
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BorderDetails::Normal(ref border) => {
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let left = webrender_api::BorderSide {
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color: border.color.left,
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style: border.style.left.to_border_style(),
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};
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let top = webrender_api::BorderSide {
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color: border.color.top,
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style: border.style.top.to_border_style(),
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};
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let right = webrender_api::BorderSide {
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color: border.color.right,
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style: border.style.right.to_border_style(),
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};
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let bottom = webrender_api::BorderSide {
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color: border.color.bottom,
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style: border.style.bottom.to_border_style(),
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};
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let radius = border.radius.to_border_radius();
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webrender_api::BorderDetails::Normal(webrender_api::NormalBorder {
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left: left,
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top: top,
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right: right,
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bottom: bottom,
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radius: radius,
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})
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}
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BorderDetails::Image(ref image) => {
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match image.image.key {
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None => return,
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Some(key) => {
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webrender_api::BorderDetails::Image(webrender_api::ImageBorder {
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image_key: key,
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patch: webrender_api::NinePatchDescriptor {
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width: image.image.width,
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height: image.image.height,
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slice: image.slice,
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},
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fill: image.fill,
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outset: image.outset,
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repeat_horizontal: image.repeat_horizontal,
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repeat_vertical: image.repeat_vertical,
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})
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}
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}
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}
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BorderDetails::Gradient(ref gradient) => {
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let extend_mode = if gradient.gradient.repeating {
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ExtendMode::Repeat
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} else {
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ExtendMode::Clamp
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};
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webrender_api::BorderDetails::Gradient(webrender_api::GradientBorder {
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gradient: builder.create_gradient(
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gradient.gradient.start_point.to_pointf(),
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gradient.gradient.end_point.to_pointf(),
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gradient.gradient.stops.clone(),
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extend_mode),
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outset: gradient.outset,
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})
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}
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BorderDetails::RadialGradient(ref gradient) => {
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let extend_mode = if gradient.gradient.repeating {
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ExtendMode::Repeat
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} else {
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ExtendMode::Clamp
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};
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webrender_api::BorderDetails::RadialGradient(webrender_api::RadialGradientBorder {
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gradient: builder.create_radial_gradient(
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gradient.gradient.center.to_pointf(),
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gradient.gradient.radius.to_sizef(),
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gradient.gradient.stops.clone(),
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extend_mode),
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outset: gradient.outset,
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})
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}
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};
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builder.push_border(&self.prim_info(), widths, details);
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}
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DisplayItem::Gradient(ref item) => {
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let rect = item.base.bounds;
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let start_point = item.gradient.start_point.to_pointf();
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let end_point = item.gradient.end_point.to_pointf();
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let extend_mode = if item.gradient.repeating {
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ExtendMode::Repeat
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} else {
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ExtendMode::Clamp
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};
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let gradient = builder.create_gradient(start_point,
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end_point,
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item.gradient.stops.clone(),
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extend_mode);
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builder.push_gradient(&self.prim_info(),
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gradient,
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rect.size.to_sizef(),
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webrender_api::LayoutSize::zero());
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}
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DisplayItem::RadialGradient(ref item) => {
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let rect = item.base.bounds;
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let center = item.gradient.center.to_pointf();
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let radius = item.gradient.radius.to_sizef();
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let extend_mode = if item.gradient.repeating {
|
|
ExtendMode::Repeat
|
|
} else {
|
|
ExtendMode::Clamp
|
|
};
|
|
let gradient = builder.create_radial_gradient(center,
|
|
radius,
|
|
item.gradient.stops.clone(),
|
|
extend_mode);
|
|
builder.push_radial_gradient(&self.prim_info(),
|
|
gradient,
|
|
rect.size.to_sizef(),
|
|
webrender_api::LayoutSize::zero());
|
|
}
|
|
DisplayItem::Line(ref item) => {
|
|
let box_bounds = item.base.bounds.to_rectf();
|
|
builder.push_line(&self.prim_info(),
|
|
box_bounds.origin.y + box_bounds.size.height,
|
|
box_bounds.origin.x,
|
|
box_bounds.origin.x + box_bounds.size.width,
|
|
webrender_api::LineOrientation::Horizontal,
|
|
box_bounds.size.height,
|
|
item.color,
|
|
item.style);
|
|
}
|
|
DisplayItem::BoxShadow(ref item) => {
|
|
let box_bounds = item.box_bounds.to_rectf();
|
|
builder.push_box_shadow(&self.prim_info(),
|
|
box_bounds,
|
|
item.offset.to_vectorf(),
|
|
item.color,
|
|
item.blur_radius.to_f32_px(),
|
|
item.spread_radius.to_f32_px(),
|
|
item.border_radius.to_border_radius(),
|
|
item.clip_mode.to_clip_mode());
|
|
}
|
|
DisplayItem::PushTextShadow(ref item) => {
|
|
builder.push_shadow(&self.prim_info(),
|
|
webrender_api::Shadow {
|
|
blur_radius: item.blur_radius.to_f32_px(),
|
|
offset: item.offset.to_vectorf(),
|
|
color: item.color,
|
|
});
|
|
}
|
|
DisplayItem::PopAllTextShadows(_) => {
|
|
builder.pop_all_shadows();
|
|
}
|
|
DisplayItem::Iframe(ref item) => {
|
|
builder.push_iframe(&self.prim_info(), item.iframe.to_webrender());
|
|
}
|
|
DisplayItem::PushStackingContext(ref item) => {
|
|
let stacking_context = &item.stacking_context;
|
|
debug_assert!(stacking_context.context_type == StackingContextType::Real);
|
|
|
|
let transform = stacking_context.transform.map(|transform| {
|
|
LayoutTransform::from_untyped(&transform).into()
|
|
});
|
|
let perspective = stacking_context.perspective.map(|perspective| {
|
|
LayoutTransform::from_untyped(&perspective)
|
|
});
|
|
|
|
builder.push_stacking_context(
|
|
&webrender_api::LayoutPrimitiveInfo::new(stacking_context.bounds.to_rectf()),
|
|
stacking_context.scroll_policy,
|
|
transform,
|
|
stacking_context.transform_style,
|
|
perspective,
|
|
stacking_context.mix_blend_mode,
|
|
stacking_context.filters.to_filter_ops()
|
|
);
|
|
}
|
|
DisplayItem::PopStackingContext(_) => builder.pop_stacking_context(),
|
|
DisplayItem::DefineClipScrollNode(ref item) => {
|
|
let node = &clip_scroll_nodes[item.node_index.0];
|
|
let parent_id = get_id(clip_ids, node.parent_index);
|
|
let item_rect = node.clip.main.to_rectf();
|
|
|
|
let webrender_id = match node.node_type {
|
|
ClipScrollNodeType::Clip => {
|
|
builder.define_clip_with_parent(
|
|
node.id,
|
|
parent_id,
|
|
item_rect,
|
|
node.clip.get_complex_clips(),
|
|
None
|
|
)
|
|
}
|
|
ClipScrollNodeType::ScrollFrame(scroll_sensitivity) => {
|
|
builder.define_scroll_frame_with_parent(
|
|
node.id,
|
|
parent_id,
|
|
node.content_rect.to_rectf(),
|
|
node.clip.main.to_rectf(),
|
|
node.clip.get_complex_clips(),
|
|
None,
|
|
scroll_sensitivity
|
|
)
|
|
}
|
|
ClipScrollNodeType::StickyFrame(sticky_frame_info) => {
|
|
// TODO: Add define_sticky_frame_with_parent to WebRender.
|
|
builder.push_clip_id(parent_id);
|
|
let id = builder.define_sticky_frame(node.id, item_rect, sticky_frame_info);
|
|
builder.pop_clip_id();
|
|
id
|
|
}
|
|
};
|
|
|
|
debug_assert!(node.id.is_none() || node.id == Some(webrender_id));
|
|
clip_ids[item.node_index.0] = Some(webrender_id);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
trait ToWebRenderClip {
|
|
fn get_complex_clips(&self) -> Vec<ComplexClipRegion>;
|
|
}
|
|
|
|
impl ToWebRenderClip for ClippingRegion {
|
|
fn get_complex_clips(&self) -> Vec<ComplexClipRegion> {
|
|
self.complex.iter().map(|complex_clipping_region| {
|
|
ComplexClipRegion::new(
|
|
complex_clipping_region.rect.to_rectf(),
|
|
complex_clipping_region.radii.to_border_radius(),
|
|
ClipMode::Clip,
|
|
)
|
|
}).collect()
|
|
}
|
|
}
|