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a0dd2c1beb
`TextRun`s use their parent style to render. Previously, these styles were cloned and stored directly in the box tree `TextRun` and resulting `TextFragment`s. This presents a problem for incremental layout. Wrapping the style in another layer of shared ownership and mutability will allow updating all `TextFragment`s during repaint-only incremental layout by simply updating the box tree styles of the original text parents. This adds a new set of borrows when accessing text styles, but also makes it so that during box tree block construction `InlineFormattingContext`s are created lazily and now `InlineFormattingContextBuilder::finish` consumes the builder, making the API make a bit more sense. This should also improve performance of box tree block construction slightly. Testing: This should not change observable behavior and thus is covered by existing WPT tests. Signed-off-by: Martin Robinson <mrobinson@igalia.com> Co-authored-by: Oriol Brufau <obrufau@igalia.com>
1738 lines
66 KiB
Rust
1738 lines
66 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 https://mozilla.org/MPL/2.0/. */
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use std::cell::{OnceCell, RefCell};
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use std::sync::Arc;
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use app_units::{AU_PER_PX, Au};
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use base::WebRenderEpochToU16;
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use base::id::ScrollTreeNodeId;
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use compositing_traits::display_list::{AxesScrollSensitivity, CompositorDisplayListInfo};
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use embedder_traits::Cursor;
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use euclid::{Point2D, SideOffsets2D, Size2D, UnknownUnit};
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use fonts::GlyphStore;
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use gradient::WebRenderGradient;
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use range::Range as ServoRange;
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use servo_arc::Arc as ServoArc;
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use servo_geometry::MaxRect;
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use style::Zero;
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use style::color::{AbsoluteColor, ColorSpace};
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use style::computed_values::border_image_outset::T as BorderImageOutset;
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use style::computed_values::text_decoration_style::T as ComputedTextDecorationStyle;
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use style::dom::OpaqueNode;
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use style::properties::ComputedValues;
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use style::properties::longhands::visibility::computed_value::T as Visibility;
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use style::properties::style_structs::Border;
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use style::values::computed::{
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BorderImageSideWidth, BorderImageWidth, BorderStyle, LengthPercentage,
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NonNegativeLengthOrNumber, NumberOrPercentage, OutlineStyle,
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};
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use style::values::generics::NonNegative;
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use style::values::generics::rect::Rect;
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use style::values::specified::text::TextDecorationLine;
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use style::values::specified::ui::CursorKind;
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use style_traits::CSSPixel;
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use webrender_api::units::{DevicePixel, LayoutPixel, LayoutRect, LayoutSize};
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use webrender_api::{
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self as wr, BorderDetails, BoxShadowClipMode, ClipChainId, CommonItemProperties,
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ImageRendering, NinePatchBorder, NinePatchBorderSource, SpatialId, units,
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};
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use wr::units::LayoutVector2D;
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use crate::cell::ArcRefCell;
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use crate::context::{LayoutContext, ResolvedImage};
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pub use crate::display_list::conversions::ToWebRender;
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use crate::display_list::stacking_context::StackingContextSection;
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use crate::fragment_tree::{
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BackgroundMode, BoxFragment, Fragment, FragmentFlags, FragmentTree, SpecificLayoutInfo, Tag,
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TextFragment,
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};
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use crate::geom::{
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LengthPercentageOrAuto, PhysicalPoint, PhysicalRect, PhysicalSides, PhysicalSize,
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};
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use crate::replaced::NaturalSizes;
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use crate::style_ext::{BorderStyleColor, ComputedValuesExt};
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mod background;
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mod clip_path;
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mod conversions;
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mod gradient;
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mod stacking_context;
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use background::BackgroundPainter;
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pub use stacking_context::*;
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#[derive(Clone, Copy)]
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pub struct WebRenderImageInfo {
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pub size: Size2D<u32, UnknownUnit>,
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pub key: Option<wr::ImageKey>,
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}
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// webrender's `ItemTag` is private.
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type ItemTag = (u64, u16);
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type HitInfo = Option<ItemTag>;
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const INSERTION_POINT_LOGICAL_WIDTH: Au = Au(AU_PER_PX);
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/// Where the information that's used to build display lists is stored. This
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/// includes both a [wr::DisplayListBuilder] for building up WebRender-specific
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/// display list information and a [CompositorDisplayListInfo] used to store
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/// information used by the compositor, such as a compositor-side scroll tree.
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pub struct DisplayList {
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/// The [wr::DisplayListBuilder] used to collect display list items.
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pub wr: wr::DisplayListBuilder,
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/// The information about the WebRender display list that the compositor
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/// consumes. This curerntly contains the out-of-band hit testing information
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/// data structure that the compositor uses to map hit tests to information
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/// about the item hit.
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pub compositor_info: CompositorDisplayListInfo,
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/// A count of the number of SpatialTree nodes pushed to the WebRender display
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/// list. This is merely to ensure that the currently-unused SpatialTreeItemKey
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/// produced for every SpatialTree node is unique.
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pub spatial_tree_count: u64,
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}
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impl DisplayList {
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/// Create a new [DisplayList] given the dimensions of the layout and the WebRender
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/// pipeline id.
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pub fn new(
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viewport_size: units::LayoutSize,
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content_size: units::LayoutSize,
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pipeline_id: wr::PipelineId,
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epoch: wr::Epoch,
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viewport_scroll_sensitivity: AxesScrollSensitivity,
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first_reflow: bool,
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) -> Self {
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Self {
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wr: wr::DisplayListBuilder::new(pipeline_id),
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compositor_info: CompositorDisplayListInfo::new(
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viewport_size,
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content_size,
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pipeline_id,
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epoch,
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viewport_scroll_sensitivity,
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first_reflow,
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),
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spatial_tree_count: 0,
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}
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}
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pub fn define_clip_chain<I>(&mut self, parent: ClipChainId, clips: I) -> ClipChainId
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where
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I: IntoIterator<Item = wr::ClipId>,
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I::IntoIter: ExactSizeIterator + Clone,
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{
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// WebRender has two different ways of expressing "no clip." ClipChainId::INVALID should be
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// used for primitives, but `None` is used for stacking contexts and clip chains. We convert
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// to the `Option<ClipChainId>` representation here. Just passing Some(ClipChainId::INVALID)
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// leads to a crash.
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let parent = match parent {
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ClipChainId::INVALID => None,
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parent => Some(parent),
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};
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self.wr.define_clip_chain(parent, clips)
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}
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}
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pub(crate) struct DisplayListBuilder<'a> {
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/// The current [ScrollTreeNodeId] for this [DisplayListBuilder]. This
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/// allows only passing the builder instead passing the containing
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/// [stacking_context::StackingContextContent::Fragment] as an argument to display
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/// list building functions.
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current_scroll_node_id: ScrollTreeNodeId,
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/// The current [ScrollTreeNodeId] for this [DisplayListBuilder]. This is necessary in addition
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/// to the [Self::current_scroll_node_id], because some pieces of fragments as backgrounds with
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/// `background-attachment: fixed` need to not scroll while the rest of the fragment does.
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current_reference_frame_scroll_node_id: ScrollTreeNodeId,
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/// The current [wr::ClipId] for this [DisplayListBuilder]. This allows
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/// only passing the builder instead passing the containing
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/// [stacking_context::StackingContextContent::Fragment] as an argument to display
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/// list building functions.
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current_clip_chain_id: ClipChainId,
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/// A [LayoutContext] used to get information about the device pixel ratio
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/// and get handles to WebRender images.
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pub context: &'a LayoutContext<'a>,
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/// The [DisplayList] used to collect display list items and metadata.
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pub display_list: &'a mut DisplayList,
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/// Data about the fragments that are highlighted by the inspector, if any.
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///
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/// This data is collected during the traversal of the fragment tree and used
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/// to paint the highlight at the very end.
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inspector_highlight: Option<InspectorHighlight>,
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/// Whether or not the `<body>` element should be painted. This is false if the root `<html>`
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/// element inherits the `<body>`'s background to paint the page canvas background.
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/// See <https://drafts.csswg.org/css-backgrounds/#body-background>.
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paint_body_background: bool,
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}
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struct InspectorHighlight {
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/// The node that should be highlighted
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tag: Tag,
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/// Accumulates information about the fragments that belong to the highlighted node.
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///
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/// This information is collected as the fragment tree is traversed to build the
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/// display list.
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state: Option<HighlightTraversalState>,
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}
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struct HighlightTraversalState {
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/// The smallest rectangle that fully encloses all fragments created by the highlighted
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/// dom node, if any.
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content_box: euclid::Rect<Au, CSSPixel>,
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spatial_id: SpatialId,
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clip_chain_id: ClipChainId,
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/// When the highlighted fragment is a box fragment we remember the information
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/// needed to paint padding, border and margin areas.
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maybe_box_fragment: Option<ArcRefCell<BoxFragment>>,
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}
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impl InspectorHighlight {
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fn for_node(node: OpaqueNode) -> Self {
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Self {
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tag: Tag::new(node),
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state: None,
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}
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}
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}
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impl DisplayList {
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pub fn build(
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&mut self,
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context: &LayoutContext,
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fragment_tree: &FragmentTree,
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root_stacking_context: &StackingContext,
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) {
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#[cfg(feature = "tracing")]
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let _span = tracing::trace_span!("display_list::build", servo_profiling = true).entered();
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let mut builder = DisplayListBuilder {
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current_scroll_node_id: self.compositor_info.root_reference_frame_id,
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current_reference_frame_scroll_node_id: self.compositor_info.root_reference_frame_id,
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current_clip_chain_id: ClipChainId::INVALID,
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context,
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display_list: self,
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inspector_highlight: context
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.highlighted_dom_node
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.map(InspectorHighlight::for_node),
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paint_body_background: true,
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};
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fragment_tree.build_display_list(&mut builder, root_stacking_context);
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if let Some(highlight) = builder
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.inspector_highlight
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.take()
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.and_then(|highlight| highlight.state)
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{
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builder.paint_dom_inspector_highlight(highlight);
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}
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}
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}
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impl DisplayListBuilder<'_> {
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fn wr(&mut self) -> &mut wr::DisplayListBuilder {
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&mut self.display_list.wr
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}
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fn mark_is_contentful(&mut self) {
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self.display_list.compositor_info.is_contentful = true;
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}
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fn common_properties(
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&self,
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clip_rect: units::LayoutRect,
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style: &ComputedValues,
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) -> wr::CommonItemProperties {
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// TODO(mrobinson): We should take advantage of this field to pass hit testing
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// information. This will allow us to avoid creating hit testing display items
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// for fragments that paint their entire border rectangle.
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wr::CommonItemProperties {
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clip_rect,
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spatial_id: self.current_scroll_node_id.spatial_id,
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clip_chain_id: self.current_clip_chain_id,
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flags: style.get_webrender_primitive_flags(),
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}
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}
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fn hit_info(
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&mut self,
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style: &ComputedValues,
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tag: Option<Tag>,
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auto_cursor: Cursor,
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) -> HitInfo {
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use style::computed_values::pointer_events::T as PointerEvents;
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let inherited_ui = style.get_inherited_ui();
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if inherited_ui.pointer_events == PointerEvents::None {
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return None;
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}
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let hit_test_index = self.display_list.compositor_info.add_hit_test_info(
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tag?.node.0 as u64,
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Some(cursor(inherited_ui.cursor.keyword, auto_cursor)),
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self.current_scroll_node_id,
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);
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Some((
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hit_test_index as u64,
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self.display_list.compositor_info.epoch.as_u16(),
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))
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}
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/// Draw highlights around the node that is currently hovered in the devtools.
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fn paint_dom_inspector_highlight(&mut self, highlight: HighlightTraversalState) {
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const CONTENT_BOX_HIGHLIGHT_COLOR: webrender_api::ColorF = webrender_api::ColorF {
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r: 0.23,
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g: 0.7,
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b: 0.87,
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a: 0.5,
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};
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const PADDING_BOX_HIGHLIGHT_COLOR: webrender_api::ColorF = webrender_api::ColorF {
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r: 0.49,
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g: 0.3,
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b: 0.7,
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a: 0.5,
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};
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const BORDER_BOX_HIGHLIGHT_COLOR: webrender_api::ColorF = webrender_api::ColorF {
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r: 0.2,
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g: 0.2,
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b: 0.2,
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a: 0.5,
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};
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const MARGIN_BOX_HIGHLIGHT_COLOR: webrender_api::ColorF = webrender_api::ColorF {
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r: 1.,
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g: 0.93,
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b: 0.,
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a: 0.5,
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};
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// Highlight content box
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let content_box = highlight.content_box.to_webrender();
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let properties = wr::CommonItemProperties {
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clip_rect: content_box,
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spatial_id: highlight.spatial_id,
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clip_chain_id: highlight.clip_chain_id,
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flags: wr::PrimitiveFlags::default(),
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};
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self.display_list
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.wr
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.push_rect(&properties, content_box, CONTENT_BOX_HIGHLIGHT_COLOR);
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// Highlight margin, border and padding
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if let Some(box_fragment) = highlight.maybe_box_fragment {
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let mut paint_highlight =
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|color: webrender_api::ColorF,
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fragment_relative_bounds: PhysicalRect<Au>,
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widths: webrender_api::units::LayoutSideOffsets| {
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if widths.is_zero() {
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return;
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}
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let bounds = box_fragment
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.borrow()
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.offset_by_containing_block(&fragment_relative_bounds)
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.to_webrender();
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// We paint each highlighted area as if it was a border for simplicity
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let border_style = wr::BorderSide {
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color,
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style: webrender_api::BorderStyle::Solid,
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};
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let details = wr::BorderDetails::Normal(wr::NormalBorder {
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top: border_style,
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right: border_style,
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bottom: border_style,
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left: border_style,
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radius: webrender_api::BorderRadius::default(),
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do_aa: true,
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});
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let common = wr::CommonItemProperties {
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clip_rect: bounds,
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spatial_id: highlight.spatial_id,
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clip_chain_id: highlight.clip_chain_id,
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flags: wr::PrimitiveFlags::default(),
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};
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self.wr().push_border(&common, bounds, widths, details)
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};
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let box_fragment = box_fragment.borrow();
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paint_highlight(
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PADDING_BOX_HIGHLIGHT_COLOR,
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box_fragment.padding_rect(),
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box_fragment.padding.to_webrender(),
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);
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paint_highlight(
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BORDER_BOX_HIGHLIGHT_COLOR,
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box_fragment.border_rect(),
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box_fragment.border.to_webrender(),
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);
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paint_highlight(
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MARGIN_BOX_HIGHLIGHT_COLOR,
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box_fragment.margin_rect(),
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box_fragment.margin.to_webrender(),
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);
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}
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}
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}
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impl InspectorHighlight {
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fn register_fragment_of_highlighted_dom_node(
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&mut self,
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fragment: &Fragment,
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spatial_id: SpatialId,
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clip_chain_id: ClipChainId,
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containing_block: &PhysicalRect<Au>,
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) {
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let state = self.state.get_or_insert(HighlightTraversalState {
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content_box: euclid::Rect::zero(),
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spatial_id,
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clip_chain_id,
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maybe_box_fragment: None,
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});
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// We expect all fragments generated by one node to be in the same scroll tree node and clip node
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debug_assert_eq!(spatial_id, state.spatial_id);
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if clip_chain_id != ClipChainId::INVALID && state.clip_chain_id != ClipChainId::INVALID {
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debug_assert_eq!(
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clip_chain_id, state.clip_chain_id,
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"Fragments of the same node must either have no clip chain or the same one"
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);
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}
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let fragment_relative_rect = match fragment {
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Fragment::Box(fragment) | Fragment::Float(fragment) => {
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state.maybe_box_fragment = Some(fragment.clone());
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|
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fragment.borrow().content_rect
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},
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Fragment::Positioning(fragment) => fragment.borrow().rect,
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Fragment::Text(fragment) => fragment.borrow().rect,
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Fragment::Image(image_fragment) => image_fragment.borrow().rect,
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Fragment::AbsoluteOrFixedPositioned(_) => return,
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Fragment::IFrame(iframe_fragment) => iframe_fragment.borrow().rect,
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};
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state.content_box = state
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.content_box
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.union(&fragment_relative_rect.translate(containing_block.origin.to_vector()));
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}
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}
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|
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impl Fragment {
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pub(crate) fn build_display_list(
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&self,
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builder: &mut DisplayListBuilder,
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|
containing_block: &PhysicalRect<Au>,
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section: StackingContextSection,
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is_hit_test_for_scrollable_overflow: bool,
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|
is_collapsed_table_borders: bool,
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|
) {
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if let Some(inspector_highlight) = &mut builder.inspector_highlight {
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if self.tag() == Some(inspector_highlight.tag) {
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inspector_highlight.register_fragment_of_highlighted_dom_node(
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|
self,
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builder.current_scroll_node_id.spatial_id,
|
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builder.current_clip_chain_id,
|
|
containing_block,
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);
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}
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}
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|
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match self {
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Fragment::Box(box_fragment) | Fragment::Float(box_fragment) => {
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let box_fragment = &*box_fragment.borrow();
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|
match box_fragment.style.get_inherited_box().visibility {
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|
Visibility::Visible => BuilderForBoxFragment::new(
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|
box_fragment,
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|
containing_block,
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is_hit_test_for_scrollable_overflow,
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|
is_collapsed_table_borders,
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|
)
|
|
.build(builder, section),
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Visibility::Hidden => (),
|
|
Visibility::Collapse => (),
|
|
}
|
|
},
|
|
Fragment::AbsoluteOrFixedPositioned(_) => {},
|
|
Fragment::Positioning(positioning_fragment) => {
|
|
let positioning_fragment = positioning_fragment.borrow();
|
|
if let Some(style) = positioning_fragment.style.as_ref() {
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|
let rect = positioning_fragment
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.rect
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|
.translate(containing_block.origin.to_vector());
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|
self.maybe_push_hit_test_for_style_and_tag(
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|
builder,
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|
style,
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|
positioning_fragment.base.tag,
|
|
rect,
|
|
Cursor::Default,
|
|
);
|
|
}
|
|
},
|
|
Fragment::Image(image) => {
|
|
let image = image.borrow();
|
|
match image.style.get_inherited_box().visibility {
|
|
Visibility::Visible => {
|
|
builder.mark_is_contentful();
|
|
|
|
let image_rendering = image
|
|
.style
|
|
.get_inherited_box()
|
|
.image_rendering
|
|
.to_webrender();
|
|
let rect = image
|
|
.rect
|
|
.translate(containing_block.origin.to_vector())
|
|
.to_webrender();
|
|
let clip = image
|
|
.clip
|
|
.translate(containing_block.origin.to_vector())
|
|
.to_webrender();
|
|
let common = builder.common_properties(clip, &image.style);
|
|
|
|
if let Some(image_key) = image.image_key {
|
|
builder.wr().push_image(
|
|
&common,
|
|
rect,
|
|
image_rendering,
|
|
wr::AlphaType::PremultipliedAlpha,
|
|
image_key,
|
|
wr::ColorF::WHITE,
|
|
);
|
|
}
|
|
},
|
|
Visibility::Hidden => (),
|
|
Visibility::Collapse => (),
|
|
}
|
|
},
|
|
Fragment::IFrame(iframe) => {
|
|
let iframe = iframe.borrow();
|
|
match iframe.style.get_inherited_box().visibility {
|
|
Visibility::Visible => {
|
|
builder.mark_is_contentful();
|
|
let rect = iframe.rect.translate(containing_block.origin.to_vector());
|
|
|
|
let common = builder.common_properties(rect.to_webrender(), &iframe.style);
|
|
builder.wr().push_iframe(
|
|
rect.to_webrender(),
|
|
common.clip_rect,
|
|
&wr::SpaceAndClipInfo {
|
|
spatial_id: common.spatial_id,
|
|
clip_chain_id: common.clip_chain_id,
|
|
},
|
|
iframe.pipeline_id.into(),
|
|
true,
|
|
);
|
|
},
|
|
Visibility::Hidden => (),
|
|
Visibility::Collapse => (),
|
|
}
|
|
},
|
|
Fragment::Text(text) => {
|
|
let text = &*text.borrow();
|
|
match text
|
|
.inline_styles
|
|
.style
|
|
.borrow()
|
|
.get_inherited_box()
|
|
.visibility
|
|
{
|
|
Visibility::Visible => {
|
|
self.build_display_list_for_text_fragment(text, builder, containing_block)
|
|
},
|
|
Visibility::Hidden => (),
|
|
Visibility::Collapse => (),
|
|
}
|
|
},
|
|
}
|
|
}
|
|
|
|
fn maybe_push_hit_test_for_style_and_tag(
|
|
&self,
|
|
builder: &mut DisplayListBuilder,
|
|
style: &ComputedValues,
|
|
tag: Option<Tag>,
|
|
rect: PhysicalRect<Au>,
|
|
cursor: Cursor,
|
|
) {
|
|
let hit_info = builder.hit_info(style, tag, cursor);
|
|
let hit_info = match hit_info {
|
|
Some(hit_info) => hit_info,
|
|
None => return,
|
|
};
|
|
|
|
let clip_chain_id = builder.current_clip_chain_id;
|
|
let spatial_id = builder.current_scroll_node_id.spatial_id;
|
|
builder.wr().push_hit_test(
|
|
rect.to_webrender(),
|
|
clip_chain_id,
|
|
spatial_id,
|
|
style.get_webrender_primitive_flags(),
|
|
hit_info,
|
|
);
|
|
}
|
|
|
|
fn build_display_list_for_text_fragment(
|
|
&self,
|
|
fragment: &TextFragment,
|
|
builder: &mut DisplayListBuilder,
|
|
containing_block: &PhysicalRect<Au>,
|
|
) {
|
|
// NB: The order of painting text components (CSS Text Decoration Module Level 3) is:
|
|
// shadows, underline, overline, text, text-emphasis, and then line-through.
|
|
|
|
builder.mark_is_contentful();
|
|
|
|
let rect = fragment.rect.translate(containing_block.origin.to_vector());
|
|
let mut baseline_origin = rect.origin;
|
|
baseline_origin.y += fragment.font_metrics.ascent;
|
|
let glyphs = glyphs(
|
|
&fragment.glyphs,
|
|
baseline_origin,
|
|
fragment.justification_adjustment,
|
|
!fragment.has_selection(),
|
|
);
|
|
if glyphs.is_empty() {
|
|
return;
|
|
}
|
|
|
|
let parent_style = fragment.inline_styles.style.borrow();
|
|
self.maybe_push_hit_test_for_style_and_tag(
|
|
builder,
|
|
&parent_style,
|
|
fragment.base.tag,
|
|
rect,
|
|
Cursor::Text,
|
|
);
|
|
|
|
let color = parent_style.clone_color();
|
|
let font_metrics = &fragment.font_metrics;
|
|
let dppx = builder.context.style_context.device_pixel_ratio().get();
|
|
let common = builder.common_properties(rect.to_webrender(), &parent_style);
|
|
|
|
// Shadows. According to CSS-BACKGROUNDS, text shadows render in *reverse* order (front to
|
|
// back).
|
|
let shadows = &parent_style.get_inherited_text().text_shadow;
|
|
for shadow in shadows.0.iter().rev() {
|
|
builder.wr().push_shadow(
|
|
&wr::SpaceAndClipInfo {
|
|
spatial_id: common.spatial_id,
|
|
clip_chain_id: common.clip_chain_id,
|
|
},
|
|
wr::Shadow {
|
|
offset: LayoutVector2D::new(shadow.horizontal.px(), shadow.vertical.px()),
|
|
color: rgba(shadow.color.resolve_to_absolute(&color)),
|
|
blur_radius: shadow.blur.px(),
|
|
},
|
|
true, /* should_inflate */
|
|
);
|
|
}
|
|
|
|
if fragment
|
|
.text_decoration_line
|
|
.contains(TextDecorationLine::UNDERLINE)
|
|
{
|
|
let mut rect = rect;
|
|
rect.origin.y += font_metrics.ascent - font_metrics.underline_offset;
|
|
rect.size.height = Au::from_f32_px(font_metrics.underline_size.to_nearest_pixel(dppx));
|
|
self.build_display_list_for_text_decoration(&parent_style, builder, &rect, &color);
|
|
}
|
|
|
|
if fragment
|
|
.text_decoration_line
|
|
.contains(TextDecorationLine::OVERLINE)
|
|
{
|
|
let mut rect = rect;
|
|
rect.size.height = Au::from_f32_px(font_metrics.underline_size.to_nearest_pixel(dppx));
|
|
self.build_display_list_for_text_decoration(&parent_style, builder, &rect, &color);
|
|
}
|
|
|
|
// TODO: This caret/text selection implementation currently does not account for vertical text
|
|
// and RTL text properly.
|
|
if let Some(range) = fragment.selection_range {
|
|
let baseline_origin = rect.origin;
|
|
if !range.is_empty() {
|
|
let start = glyphs_advance_by_index(
|
|
&fragment.glyphs,
|
|
range.begin(),
|
|
baseline_origin,
|
|
fragment.justification_adjustment,
|
|
);
|
|
|
|
let end = glyphs_advance_by_index(
|
|
&fragment.glyphs,
|
|
range.end(),
|
|
baseline_origin,
|
|
fragment.justification_adjustment,
|
|
);
|
|
|
|
let selection_rect = LayoutRect::new(
|
|
Point2D::new(start.x.to_f32_px(), containing_block.min_y().to_f32_px()),
|
|
Point2D::new(end.x.to_f32_px(), containing_block.max_y().to_f32_px()),
|
|
);
|
|
if let Some(selection_color) = fragment
|
|
.inline_styles
|
|
.selected
|
|
.borrow()
|
|
.clone_background_color()
|
|
.as_absolute()
|
|
{
|
|
let selection_common = builder.common_properties(selection_rect, &parent_style);
|
|
builder.wr().push_rect(
|
|
&selection_common,
|
|
selection_rect,
|
|
rgba(*selection_color),
|
|
);
|
|
}
|
|
} else {
|
|
let insertion_point = glyphs_advance_by_index(
|
|
&fragment.glyphs,
|
|
range.begin(),
|
|
baseline_origin,
|
|
fragment.justification_adjustment,
|
|
);
|
|
|
|
let insertion_point_rect = LayoutRect::new(
|
|
Point2D::new(
|
|
insertion_point.x.to_f32_px(),
|
|
containing_block.min_y().to_f32_px(),
|
|
),
|
|
Point2D::new(
|
|
insertion_point.x.to_f32_px() + INSERTION_POINT_LOGICAL_WIDTH.to_f32_px(),
|
|
containing_block.max_y().to_f32_px(),
|
|
),
|
|
);
|
|
let insertion_point_common =
|
|
builder.common_properties(insertion_point_rect, &parent_style);
|
|
// TODO: The color of the caret is currently hardcoded to the text color.
|
|
// We should be retrieving the caret color from the style properly.
|
|
builder
|
|
.wr()
|
|
.push_rect(&insertion_point_common, insertion_point_rect, rgba(color));
|
|
}
|
|
}
|
|
|
|
builder.wr().push_text(
|
|
&common,
|
|
rect.to_webrender(),
|
|
&glyphs,
|
|
fragment.font_key,
|
|
rgba(color),
|
|
None,
|
|
);
|
|
|
|
if fragment
|
|
.text_decoration_line
|
|
.contains(TextDecorationLine::LINE_THROUGH)
|
|
{
|
|
let mut rect = rect;
|
|
rect.origin.y += font_metrics.ascent - font_metrics.strikeout_offset;
|
|
rect.size.height = Au::from_f32_px(font_metrics.strikeout_size.to_nearest_pixel(dppx));
|
|
self.build_display_list_for_text_decoration(&parent_style, builder, &rect, &color);
|
|
}
|
|
|
|
if !shadows.0.is_empty() {
|
|
builder.wr().pop_all_shadows();
|
|
}
|
|
}
|
|
|
|
fn build_display_list_for_text_decoration(
|
|
&self,
|
|
parent_style: &ServoArc<ComputedValues>,
|
|
builder: &mut DisplayListBuilder,
|
|
rect: &PhysicalRect<Au>,
|
|
color: &AbsoluteColor,
|
|
) {
|
|
let rect = rect.to_webrender();
|
|
let wavy_line_thickness = (0.33 * rect.size().height).ceil();
|
|
let text_decoration_color = parent_style
|
|
.clone_text_decoration_color()
|
|
.resolve_to_absolute(color);
|
|
let text_decoration_style = parent_style.clone_text_decoration_style();
|
|
if text_decoration_style == ComputedTextDecorationStyle::MozNone {
|
|
return;
|
|
}
|
|
builder.display_list.wr.push_line(
|
|
&builder.common_properties(rect, parent_style),
|
|
&rect,
|
|
wavy_line_thickness,
|
|
wr::LineOrientation::Horizontal,
|
|
&rgba(text_decoration_color),
|
|
text_decoration_style.to_webrender(),
|
|
);
|
|
// XXX(ferjm) support text-decoration-style: double
|
|
}
|
|
}
|
|
|
|
struct BuilderForBoxFragment<'a> {
|
|
fragment: &'a BoxFragment,
|
|
containing_block: &'a PhysicalRect<Au>,
|
|
border_rect: units::LayoutRect,
|
|
margin_rect: OnceCell<units::LayoutRect>,
|
|
padding_rect: OnceCell<units::LayoutRect>,
|
|
content_rect: OnceCell<units::LayoutRect>,
|
|
border_radius: wr::BorderRadius,
|
|
border_edge_clip_chain_id: RefCell<Option<ClipChainId>>,
|
|
padding_edge_clip_chain_id: RefCell<Option<ClipChainId>>,
|
|
content_edge_clip_chain_id: RefCell<Option<ClipChainId>>,
|
|
is_hit_test_for_scrollable_overflow: bool,
|
|
is_collapsed_table_borders: bool,
|
|
}
|
|
|
|
impl<'a> BuilderForBoxFragment<'a> {
|
|
fn new(
|
|
fragment: &'a BoxFragment,
|
|
containing_block: &'a PhysicalRect<Au>,
|
|
is_hit_test_for_scrollable_overflow: bool,
|
|
is_collapsed_table_borders: bool,
|
|
) -> Self {
|
|
let border_rect = fragment
|
|
.border_rect()
|
|
.translate(containing_block.origin.to_vector());
|
|
|
|
let webrender_border_rect = border_rect.to_webrender();
|
|
let border_radius = {
|
|
let resolve = |radius: &LengthPercentage, box_size: Au| {
|
|
radius.to_used_value(box_size).to_f32_px()
|
|
};
|
|
let corner = |corner: &style::values::computed::BorderCornerRadius| {
|
|
Size2D::new(
|
|
resolve(&corner.0.width.0, border_rect.size.width),
|
|
resolve(&corner.0.height.0, border_rect.size.height),
|
|
)
|
|
};
|
|
let b = fragment.style.get_border();
|
|
let mut radius = wr::BorderRadius {
|
|
top_left: corner(&b.border_top_left_radius),
|
|
top_right: corner(&b.border_top_right_radius),
|
|
bottom_right: corner(&b.border_bottom_right_radius),
|
|
bottom_left: corner(&b.border_bottom_left_radius),
|
|
};
|
|
|
|
normalize_radii(&webrender_border_rect, &mut radius);
|
|
radius
|
|
};
|
|
|
|
Self {
|
|
fragment,
|
|
containing_block,
|
|
border_rect: webrender_border_rect,
|
|
border_radius,
|
|
margin_rect: OnceCell::new(),
|
|
padding_rect: OnceCell::new(),
|
|
content_rect: OnceCell::new(),
|
|
border_edge_clip_chain_id: RefCell::new(None),
|
|
padding_edge_clip_chain_id: RefCell::new(None),
|
|
content_edge_clip_chain_id: RefCell::new(None),
|
|
is_hit_test_for_scrollable_overflow,
|
|
is_collapsed_table_borders,
|
|
}
|
|
}
|
|
|
|
fn content_rect(&self) -> &units::LayoutRect {
|
|
self.content_rect.get_or_init(|| {
|
|
self.fragment
|
|
.content_rect
|
|
.translate(self.containing_block.origin.to_vector())
|
|
.to_webrender()
|
|
})
|
|
}
|
|
|
|
fn padding_rect(&self) -> &units::LayoutRect {
|
|
self.padding_rect.get_or_init(|| {
|
|
self.fragment
|
|
.padding_rect()
|
|
.translate(self.containing_block.origin.to_vector())
|
|
.to_webrender()
|
|
})
|
|
}
|
|
|
|
fn margin_rect(&self) -> &units::LayoutRect {
|
|
self.margin_rect.get_or_init(|| {
|
|
self.fragment
|
|
.margin_rect()
|
|
.translate(self.containing_block.origin.to_vector())
|
|
.to_webrender()
|
|
})
|
|
}
|
|
|
|
fn border_edge_clip(
|
|
&self,
|
|
builder: &mut DisplayListBuilder,
|
|
force_clip_creation: bool,
|
|
) -> Option<ClipChainId> {
|
|
if let Some(clip) = *self.border_edge_clip_chain_id.borrow() {
|
|
return Some(clip);
|
|
}
|
|
|
|
let maybe_clip = create_clip_chain(
|
|
self.border_radius,
|
|
self.border_rect,
|
|
builder,
|
|
force_clip_creation,
|
|
);
|
|
*self.border_edge_clip_chain_id.borrow_mut() = maybe_clip;
|
|
maybe_clip
|
|
}
|
|
|
|
fn padding_edge_clip(
|
|
&self,
|
|
builder: &mut DisplayListBuilder,
|
|
force_clip_creation: bool,
|
|
) -> Option<ClipChainId> {
|
|
if let Some(clip) = *self.padding_edge_clip_chain_id.borrow() {
|
|
return Some(clip);
|
|
}
|
|
|
|
let radii = inner_radii(self.border_radius, self.fragment.border.to_webrender());
|
|
let maybe_clip =
|
|
create_clip_chain(radii, *self.padding_rect(), builder, force_clip_creation);
|
|
*self.padding_edge_clip_chain_id.borrow_mut() = maybe_clip;
|
|
maybe_clip
|
|
}
|
|
|
|
fn content_edge_clip(
|
|
&self,
|
|
builder: &mut DisplayListBuilder,
|
|
force_clip_creation: bool,
|
|
) -> Option<ClipChainId> {
|
|
if let Some(clip) = *self.content_edge_clip_chain_id.borrow() {
|
|
return Some(clip);
|
|
}
|
|
|
|
let radii = inner_radii(
|
|
self.border_radius,
|
|
(self.fragment.border + self.fragment.padding).to_webrender(),
|
|
);
|
|
let maybe_clip =
|
|
create_clip_chain(radii, *self.content_rect(), builder, force_clip_creation);
|
|
*self.content_edge_clip_chain_id.borrow_mut() = maybe_clip;
|
|
maybe_clip
|
|
}
|
|
|
|
fn build(&mut self, builder: &mut DisplayListBuilder, section: StackingContextSection) {
|
|
if self.is_hit_test_for_scrollable_overflow {
|
|
self.build_hit_test(
|
|
builder,
|
|
self.fragment
|
|
.reachable_scrollable_overflow_region()
|
|
.to_webrender(),
|
|
);
|
|
return;
|
|
}
|
|
|
|
if self.is_collapsed_table_borders {
|
|
self.build_collapsed_table_borders(builder);
|
|
return;
|
|
}
|
|
|
|
if section == StackingContextSection::Outline {
|
|
self.build_outline(builder);
|
|
return;
|
|
}
|
|
|
|
self.build_hit_test(builder, self.border_rect);
|
|
if self
|
|
.fragment
|
|
.base
|
|
.flags
|
|
.contains(FragmentFlags::DO_NOT_PAINT)
|
|
{
|
|
return;
|
|
}
|
|
|
|
self.build_background(builder);
|
|
self.build_box_shadow(builder);
|
|
self.build_border(builder);
|
|
}
|
|
|
|
fn build_hit_test(&self, builder: &mut DisplayListBuilder, rect: LayoutRect) {
|
|
let hit_info = builder.hit_info(
|
|
&self.fragment.style,
|
|
self.fragment.base.tag,
|
|
Cursor::Default,
|
|
);
|
|
let hit_info = match hit_info {
|
|
Some(hit_info) => hit_info,
|
|
None => return,
|
|
};
|
|
|
|
let mut common = builder.common_properties(rect, &self.fragment.style);
|
|
if let Some(clip_chain_id) = self.border_edge_clip(builder, false) {
|
|
common.clip_chain_id = clip_chain_id;
|
|
}
|
|
builder.wr().push_hit_test(
|
|
common.clip_rect,
|
|
common.clip_chain_id,
|
|
common.spatial_id,
|
|
common.flags,
|
|
hit_info,
|
|
);
|
|
}
|
|
|
|
fn build_background_for_painter(
|
|
&mut self,
|
|
builder: &mut DisplayListBuilder,
|
|
painter: &BackgroundPainter,
|
|
) {
|
|
let b = painter.style.get_background();
|
|
let background_color = painter.style.resolve_color(&b.background_color);
|
|
if background_color.alpha > 0.0 {
|
|
// https://drafts.csswg.org/css-backgrounds/#background-color
|
|
// “The background color is clipped according to the background-clip
|
|
// value associated with the bottom-most background image layer.”
|
|
let layer_index = b.background_image.0.len() - 1;
|
|
let bounds = painter.painting_area(self, builder, layer_index);
|
|
let common = painter.common_properties(self, builder, layer_index, bounds);
|
|
builder
|
|
.wr()
|
|
.push_rect(&common, bounds, rgba(background_color))
|
|
}
|
|
|
|
self.build_background_image(builder, painter);
|
|
}
|
|
|
|
fn build_background(&mut self, builder: &mut DisplayListBuilder) {
|
|
let flags = self.fragment.base.flags;
|
|
|
|
// The root element's background is painted separately as it might inherit the `<body>`'s
|
|
// background.
|
|
if flags.intersects(FragmentFlags::IS_ROOT_ELEMENT) {
|
|
return;
|
|
}
|
|
// If the `<body>` background was inherited by the root element, don't paint it again here.
|
|
if !builder.paint_body_background &&
|
|
flags.intersects(FragmentFlags::IS_BODY_ELEMENT_OF_HTML_ELEMENT_ROOT)
|
|
{
|
|
return;
|
|
}
|
|
|
|
// If this BoxFragment does not paint a background, do nothing.
|
|
if let BackgroundMode::None = self.fragment.background_mode {
|
|
return;
|
|
}
|
|
|
|
// Paint all extra backgrounds for this BoxFragment. These are painted first, as that's
|
|
// the order that they are expected to be painted for table cells (where this feature
|
|
// is used).
|
|
if let BackgroundMode::Extra(ref extra_backgrounds) = self.fragment.background_mode {
|
|
for extra_background in extra_backgrounds {
|
|
let positioning_area = extra_background.rect;
|
|
let painter = BackgroundPainter {
|
|
style: &extra_background.style.borrow_mut(),
|
|
painting_area_override: None,
|
|
positioning_area_override: Some(
|
|
positioning_area
|
|
.translate(self.containing_block.origin.to_vector())
|
|
.to_webrender(),
|
|
),
|
|
};
|
|
self.build_background_for_painter(builder, &painter);
|
|
}
|
|
}
|
|
|
|
let painter = BackgroundPainter {
|
|
style: &self.fragment.style,
|
|
painting_area_override: None,
|
|
positioning_area_override: None,
|
|
};
|
|
self.build_background_for_painter(builder, &painter);
|
|
}
|
|
|
|
fn build_background_image(
|
|
&mut self,
|
|
builder: &mut DisplayListBuilder,
|
|
painter: &BackgroundPainter,
|
|
) {
|
|
let style = painter.style;
|
|
let b = style.get_background();
|
|
let node = self.fragment.base.tag.map(|tag| tag.node);
|
|
// Reverse because the property is top layer first, we want to paint bottom layer first.
|
|
for (index, image) in b.background_image.0.iter().enumerate().rev() {
|
|
match builder.context.resolve_image(node, image) {
|
|
Err(_) => {},
|
|
Ok(ResolvedImage::Gradient(gradient)) => {
|
|
let intrinsic = NaturalSizes::empty();
|
|
let Some(layer) =
|
|
&background::layout_layer(self, painter, builder, index, intrinsic)
|
|
else {
|
|
continue;
|
|
};
|
|
|
|
match gradient::build(style, gradient, layer.tile_size, builder) {
|
|
WebRenderGradient::Linear(linear_gradient) => builder.wr().push_gradient(
|
|
&layer.common,
|
|
layer.bounds,
|
|
linear_gradient,
|
|
layer.tile_size,
|
|
layer.tile_spacing,
|
|
),
|
|
WebRenderGradient::Radial(radial_gradient) => {
|
|
builder.wr().push_radial_gradient(
|
|
&layer.common,
|
|
layer.bounds,
|
|
radial_gradient,
|
|
layer.tile_size,
|
|
layer.tile_spacing,
|
|
)
|
|
},
|
|
WebRenderGradient::Conic(conic_gradient) => {
|
|
builder.wr().push_conic_gradient(
|
|
&layer.common,
|
|
layer.bounds,
|
|
conic_gradient,
|
|
layer.tile_size,
|
|
layer.tile_spacing,
|
|
)
|
|
},
|
|
}
|
|
},
|
|
Ok(ResolvedImage::Image(image_info)) => {
|
|
// FIXME: https://drafts.csswg.org/css-images-4/#the-image-resolution
|
|
let dppx = 1.0;
|
|
let intrinsic = NaturalSizes::from_width_and_height(
|
|
image_info.size.width as f32 / dppx,
|
|
image_info.size.height as f32 / dppx,
|
|
);
|
|
let Some(image_key) = image_info.key else {
|
|
continue;
|
|
};
|
|
|
|
if let Some(layer) =
|
|
background::layout_layer(self, painter, builder, index, intrinsic)
|
|
{
|
|
if layer.repeat {
|
|
builder.wr().push_repeating_image(
|
|
&layer.common,
|
|
layer.bounds,
|
|
layer.tile_size,
|
|
layer.tile_spacing,
|
|
style.clone_image_rendering().to_webrender(),
|
|
wr::AlphaType::PremultipliedAlpha,
|
|
image_key,
|
|
wr::ColorF::WHITE,
|
|
)
|
|
} else {
|
|
builder.wr().push_image(
|
|
&layer.common,
|
|
layer.bounds,
|
|
style.clone_image_rendering().to_webrender(),
|
|
wr::AlphaType::PremultipliedAlpha,
|
|
image_key,
|
|
wr::ColorF::WHITE,
|
|
)
|
|
}
|
|
}
|
|
},
|
|
}
|
|
}
|
|
}
|
|
|
|
fn build_border_side(&mut self, style_color: BorderStyleColor) -> wr::BorderSide {
|
|
wr::BorderSide {
|
|
color: rgba(style_color.color),
|
|
style: match style_color.style {
|
|
BorderStyle::None => wr::BorderStyle::None,
|
|
BorderStyle::Solid => wr::BorderStyle::Solid,
|
|
BorderStyle::Double => wr::BorderStyle::Double,
|
|
BorderStyle::Dotted => wr::BorderStyle::Dotted,
|
|
BorderStyle::Dashed => wr::BorderStyle::Dashed,
|
|
BorderStyle::Hidden => wr::BorderStyle::Hidden,
|
|
BorderStyle::Groove => wr::BorderStyle::Groove,
|
|
BorderStyle::Ridge => wr::BorderStyle::Ridge,
|
|
BorderStyle::Inset => wr::BorderStyle::Inset,
|
|
BorderStyle::Outset => wr::BorderStyle::Outset,
|
|
},
|
|
}
|
|
}
|
|
|
|
fn build_collapsed_table_borders(&mut self, builder: &mut DisplayListBuilder) {
|
|
let Some(SpecificLayoutInfo::TableGridWithCollapsedBorders(table_info)) =
|
|
&self.fragment.specific_layout_info
|
|
else {
|
|
return;
|
|
};
|
|
let mut common =
|
|
builder.common_properties(units::LayoutRect::default(), &self.fragment.style);
|
|
let radius = wr::BorderRadius::default();
|
|
let mut column_sum = Au::zero();
|
|
for (x, column_size) in table_info.track_sizes.x.iter().enumerate() {
|
|
let mut row_sum = Au::zero();
|
|
for (y, row_size) in table_info.track_sizes.y.iter().enumerate() {
|
|
let left_border = &table_info.collapsed_borders.x[x][y];
|
|
let right_border = &table_info.collapsed_borders.x[x + 1][y];
|
|
let top_border = &table_info.collapsed_borders.y[y][x];
|
|
let bottom_border = &table_info.collapsed_borders.y[y + 1][x];
|
|
let details = wr::BorderDetails::Normal(wr::NormalBorder {
|
|
left: self.build_border_side(left_border.style_color.clone()),
|
|
right: self.build_border_side(right_border.style_color.clone()),
|
|
top: self.build_border_side(top_border.style_color.clone()),
|
|
bottom: self.build_border_side(bottom_border.style_color.clone()),
|
|
radius,
|
|
do_aa: true,
|
|
});
|
|
let mut border_widths = PhysicalSides::new(
|
|
top_border.width,
|
|
right_border.width,
|
|
bottom_border.width,
|
|
left_border.width,
|
|
);
|
|
let left_adjustment = if x == 0 {
|
|
-border_widths.left / 2
|
|
} else {
|
|
std::mem::take(&mut border_widths.left) / 2
|
|
};
|
|
let top_adjustment = if y == 0 {
|
|
-border_widths.top / 2
|
|
} else {
|
|
std::mem::take(&mut border_widths.top) / 2
|
|
};
|
|
let origin =
|
|
PhysicalPoint::new(column_sum + left_adjustment, row_sum + top_adjustment);
|
|
let size = PhysicalSize::new(
|
|
*column_size - left_adjustment + border_widths.right / 2,
|
|
*row_size - top_adjustment + border_widths.bottom / 2,
|
|
);
|
|
let border_rect = PhysicalRect::new(origin, size)
|
|
.translate(self.fragment.content_rect.origin.to_vector())
|
|
.translate(self.containing_block.origin.to_vector())
|
|
.to_webrender();
|
|
common.clip_rect = border_rect;
|
|
builder.wr().push_border(
|
|
&common,
|
|
border_rect,
|
|
border_widths.to_webrender(),
|
|
details,
|
|
);
|
|
row_sum += *row_size;
|
|
}
|
|
column_sum += *column_size;
|
|
}
|
|
}
|
|
|
|
fn build_border(&mut self, builder: &mut DisplayListBuilder) {
|
|
if self.fragment.has_collapsed_borders() {
|
|
// Avoid painting borders for tables and table parts in collapsed-borders mode,
|
|
// since the resulting collapsed borders are painted on their own in a special way.
|
|
return;
|
|
}
|
|
|
|
let border = self.fragment.style.get_border();
|
|
let border_widths = self.fragment.border.to_webrender();
|
|
|
|
if border_widths == SideOffsets2D::zero() {
|
|
return;
|
|
}
|
|
|
|
// `border-image` replaces an element's border entirely.
|
|
let common = builder.common_properties(self.border_rect, &self.fragment.style);
|
|
if self.build_border_image(builder, &common, border, border_widths) {
|
|
return;
|
|
}
|
|
|
|
let current_color = self.fragment.style.get_inherited_text().clone_color();
|
|
let style_color = BorderStyleColor::from_border(border, ¤t_color);
|
|
let details = wr::BorderDetails::Normal(wr::NormalBorder {
|
|
top: self.build_border_side(style_color.top),
|
|
right: self.build_border_side(style_color.right),
|
|
bottom: self.build_border_side(style_color.bottom),
|
|
left: self.build_border_side(style_color.left),
|
|
radius: self.border_radius,
|
|
do_aa: true,
|
|
});
|
|
builder
|
|
.wr()
|
|
.push_border(&common, self.border_rect, border_widths, details)
|
|
}
|
|
|
|
/// Add a display item for image borders if necessary.
|
|
fn build_border_image(
|
|
&self,
|
|
builder: &mut DisplayListBuilder,
|
|
common: &CommonItemProperties,
|
|
border: &Border,
|
|
border_widths: SideOffsets2D<f32, LayoutPixel>,
|
|
) -> bool {
|
|
let border_style_struct = self.fragment.style.get_border();
|
|
let border_image_outset =
|
|
resolve_border_image_outset(border_style_struct.border_image_outset, border_widths);
|
|
let border_image_area = self.border_rect.to_rect().outer_rect(border_image_outset);
|
|
let border_image_size = border_image_area.size;
|
|
let border_image_widths = resolve_border_image_width(
|
|
&border_style_struct.border_image_width,
|
|
border_widths,
|
|
border_image_size,
|
|
);
|
|
let border_image_repeat = &border_style_struct.border_image_repeat;
|
|
let border_image_fill = border_style_struct.border_image_slice.fill;
|
|
let border_image_slice = &border_style_struct.border_image_slice.offsets;
|
|
|
|
let stops = Vec::new();
|
|
let mut width = border_image_size.width;
|
|
let mut height = border_image_size.height;
|
|
let node = self.fragment.base.tag.map(|tag| tag.node);
|
|
let source = match builder
|
|
.context
|
|
.resolve_image(node, &border.border_image_source)
|
|
{
|
|
Err(_) => return false,
|
|
Ok(ResolvedImage::Image(image_info)) => {
|
|
let Some(key) = image_info.key else {
|
|
return false;
|
|
};
|
|
|
|
width = image_info.size.width as f32;
|
|
height = image_info.size.height as f32;
|
|
NinePatchBorderSource::Image(key, ImageRendering::Auto)
|
|
},
|
|
Ok(ResolvedImage::Gradient(gradient)) => {
|
|
match gradient::build(&self.fragment.style, gradient, border_image_size, builder) {
|
|
WebRenderGradient::Linear(gradient) => {
|
|
NinePatchBorderSource::Gradient(gradient)
|
|
},
|
|
WebRenderGradient::Radial(gradient) => {
|
|
NinePatchBorderSource::RadialGradient(gradient)
|
|
},
|
|
WebRenderGradient::Conic(gradient) => {
|
|
NinePatchBorderSource::ConicGradient(gradient)
|
|
},
|
|
}
|
|
},
|
|
};
|
|
|
|
let size = euclid::Size2D::new(width as i32, height as i32);
|
|
let details = BorderDetails::NinePatch(NinePatchBorder {
|
|
source,
|
|
width: size.width,
|
|
height: size.height,
|
|
slice: resolve_border_image_slice(border_image_slice, size),
|
|
fill: border_image_fill,
|
|
repeat_horizontal: border_image_repeat.0.to_webrender(),
|
|
repeat_vertical: border_image_repeat.1.to_webrender(),
|
|
});
|
|
builder.wr().push_border(
|
|
common,
|
|
border_image_area.to_box2d(),
|
|
border_image_widths,
|
|
details,
|
|
);
|
|
builder.wr().push_stops(&stops);
|
|
true
|
|
}
|
|
|
|
fn build_outline(&mut self, builder: &mut DisplayListBuilder) {
|
|
let style = &self.fragment.style;
|
|
let outline = style.get_outline();
|
|
let width = outline.outline_width.to_f32_px();
|
|
if width == 0.0 {
|
|
return;
|
|
}
|
|
let offset = outline
|
|
.outline_offset
|
|
.px()
|
|
.max(-self.border_rect.width() / 2.0)
|
|
.max(-self.border_rect.height() / 2.0) +
|
|
width;
|
|
let outline_rect = self.border_rect.inflate(offset, offset);
|
|
let common = builder.common_properties(outline_rect, &self.fragment.style);
|
|
let widths = SideOffsets2D::new_all_same(width);
|
|
let border_style = match outline.outline_style {
|
|
// TODO: treating 'auto' as 'solid' is allowed by the spec,
|
|
// but we should do something better.
|
|
OutlineStyle::Auto => BorderStyle::Solid,
|
|
OutlineStyle::BorderStyle(s) => s,
|
|
};
|
|
let side = self.build_border_side(BorderStyleColor {
|
|
style: border_style,
|
|
color: style.resolve_color(&outline.outline_color),
|
|
});
|
|
let details = wr::BorderDetails::Normal(wr::NormalBorder {
|
|
top: side,
|
|
right: side,
|
|
bottom: side,
|
|
left: side,
|
|
radius: offset_radii(self.border_radius, offset),
|
|
do_aa: true,
|
|
});
|
|
builder
|
|
.wr()
|
|
.push_border(&common, outline_rect, widths, details)
|
|
}
|
|
|
|
fn build_box_shadow(&self, builder: &mut DisplayListBuilder<'_>) {
|
|
let box_shadows = &self.fragment.style.get_effects().box_shadow.0;
|
|
if box_shadows.is_empty() {
|
|
return;
|
|
}
|
|
|
|
// NB: According to CSS-BACKGROUNDS, box shadows render in *reverse* order (front to back).
|
|
let common = builder.common_properties(MaxRect::max_rect(), &self.fragment.style);
|
|
for box_shadow in box_shadows.iter().rev() {
|
|
let (rect, clip_mode) = if box_shadow.inset {
|
|
(*self.padding_rect(), BoxShadowClipMode::Inset)
|
|
} else {
|
|
(self.border_rect, BoxShadowClipMode::Outset)
|
|
};
|
|
|
|
builder.wr().push_box_shadow(
|
|
&common,
|
|
rect,
|
|
LayoutVector2D::new(
|
|
box_shadow.base.horizontal.px(),
|
|
box_shadow.base.vertical.px(),
|
|
),
|
|
rgba(self.fragment.style.resolve_color(&box_shadow.base.color)),
|
|
box_shadow.base.blur.px(),
|
|
box_shadow.spread.px(),
|
|
self.border_radius,
|
|
clip_mode,
|
|
);
|
|
}
|
|
}
|
|
}
|
|
|
|
fn rgba(color: AbsoluteColor) -> wr::ColorF {
|
|
let rgba = color.to_color_space(ColorSpace::Srgb);
|
|
wr::ColorF::new(
|
|
rgba.components.0.clamp(0.0, 1.0),
|
|
rgba.components.1.clamp(0.0, 1.0),
|
|
rgba.components.2.clamp(0.0, 1.0),
|
|
rgba.alpha,
|
|
)
|
|
}
|
|
|
|
fn glyphs(
|
|
glyph_runs: &[Arc<GlyphStore>],
|
|
mut baseline_origin: PhysicalPoint<Au>,
|
|
justification_adjustment: Au,
|
|
ignore_whitespace: bool,
|
|
) -> Vec<wr::GlyphInstance> {
|
|
use fonts_traits::ByteIndex;
|
|
use range::Range;
|
|
|
|
let mut glyphs = vec![];
|
|
for run in glyph_runs {
|
|
for glyph in run.iter_glyphs_for_byte_range(&Range::new(ByteIndex(0), run.len())) {
|
|
if !run.is_whitespace() || !ignore_whitespace {
|
|
let glyph_offset = glyph.offset().unwrap_or(Point2D::zero());
|
|
let point = units::LayoutPoint::new(
|
|
baseline_origin.x.to_f32_px() + glyph_offset.x.to_f32_px(),
|
|
baseline_origin.y.to_f32_px() + glyph_offset.y.to_f32_px(),
|
|
);
|
|
let glyph = wr::GlyphInstance {
|
|
index: glyph.id(),
|
|
point,
|
|
};
|
|
glyphs.push(glyph);
|
|
}
|
|
|
|
if glyph.char_is_word_separator() {
|
|
baseline_origin.x += justification_adjustment;
|
|
}
|
|
baseline_origin.x += glyph.advance();
|
|
}
|
|
}
|
|
glyphs
|
|
}
|
|
|
|
// TODO: The implementation here does not account for multiple glyph runs properly.
|
|
fn glyphs_advance_by_index(
|
|
glyph_runs: &[Arc<GlyphStore>],
|
|
index: fonts_traits::ByteIndex,
|
|
baseline_origin: PhysicalPoint<Au>,
|
|
justification_adjustment: Au,
|
|
) -> PhysicalPoint<Au> {
|
|
let mut point = baseline_origin;
|
|
let mut index = index;
|
|
for run in glyph_runs {
|
|
let range = ServoRange::new(fonts::ByteIndex(0), index.min(run.len()));
|
|
index = index - range.length();
|
|
let total_advance = run.advance_for_byte_range(&range, justification_adjustment);
|
|
point.x += total_advance;
|
|
}
|
|
point
|
|
}
|
|
|
|
fn cursor(kind: CursorKind, auto_cursor: Cursor) -> Cursor {
|
|
match kind {
|
|
CursorKind::Auto => auto_cursor,
|
|
CursorKind::None => Cursor::None,
|
|
CursorKind::Default => Cursor::Default,
|
|
CursorKind::Pointer => Cursor::Pointer,
|
|
CursorKind::ContextMenu => Cursor::ContextMenu,
|
|
CursorKind::Help => Cursor::Help,
|
|
CursorKind::Progress => Cursor::Progress,
|
|
CursorKind::Wait => Cursor::Wait,
|
|
CursorKind::Cell => Cursor::Cell,
|
|
CursorKind::Crosshair => Cursor::Crosshair,
|
|
CursorKind::Text => Cursor::Text,
|
|
CursorKind::VerticalText => Cursor::VerticalText,
|
|
CursorKind::Alias => Cursor::Alias,
|
|
CursorKind::Copy => Cursor::Copy,
|
|
CursorKind::Move => Cursor::Move,
|
|
CursorKind::NoDrop => Cursor::NoDrop,
|
|
CursorKind::NotAllowed => Cursor::NotAllowed,
|
|
CursorKind::Grab => Cursor::Grab,
|
|
CursorKind::Grabbing => Cursor::Grabbing,
|
|
CursorKind::EResize => Cursor::EResize,
|
|
CursorKind::NResize => Cursor::NResize,
|
|
CursorKind::NeResize => Cursor::NeResize,
|
|
CursorKind::NwResize => Cursor::NwResize,
|
|
CursorKind::SResize => Cursor::SResize,
|
|
CursorKind::SeResize => Cursor::SeResize,
|
|
CursorKind::SwResize => Cursor::SwResize,
|
|
CursorKind::WResize => Cursor::WResize,
|
|
CursorKind::EwResize => Cursor::EwResize,
|
|
CursorKind::NsResize => Cursor::NsResize,
|
|
CursorKind::NeswResize => Cursor::NeswResize,
|
|
CursorKind::NwseResize => Cursor::NwseResize,
|
|
CursorKind::ColResize => Cursor::ColResize,
|
|
CursorKind::RowResize => Cursor::RowResize,
|
|
CursorKind::AllScroll => Cursor::AllScroll,
|
|
CursorKind::ZoomIn => Cursor::ZoomIn,
|
|
CursorKind::ZoomOut => Cursor::ZoomOut,
|
|
}
|
|
}
|
|
|
|
/// Radii for the padding edge or content edge
|
|
fn inner_radii(mut radii: wr::BorderRadius, insets: units::LayoutSideOffsets) -> wr::BorderRadius {
|
|
assert!(insets.left >= 0.0, "left inset must not be negative");
|
|
radii.top_left.width -= insets.left;
|
|
radii.bottom_left.width -= insets.left;
|
|
|
|
assert!(insets.right >= 0.0, "left inset must not be negative");
|
|
radii.top_right.width -= insets.right;
|
|
radii.bottom_right.width -= insets.right;
|
|
|
|
assert!(insets.top >= 0.0, "top inset must not be negative");
|
|
radii.top_left.height -= insets.top;
|
|
radii.top_right.height -= insets.top;
|
|
|
|
assert!(insets.bottom >= 0.0, "bottom inset must not be negative");
|
|
radii.bottom_left.height -= insets.bottom;
|
|
radii.bottom_right.height -= insets.bottom;
|
|
radii
|
|
}
|
|
|
|
fn offset_radii(mut radii: wr::BorderRadius, offset: f32) -> wr::BorderRadius {
|
|
if offset == 0.0 {
|
|
return radii;
|
|
}
|
|
if offset < 0.0 {
|
|
return inner_radii(radii, units::LayoutSideOffsets::new_all_same(-offset));
|
|
}
|
|
let expand = |radius: &mut f32| {
|
|
// Expand the radius by the specified amount, but keeping sharp corners.
|
|
// TODO: this behavior is not continuous, it's being discussed in the CSSWG:
|
|
// https://github.com/w3c/csswg-drafts/issues/7103
|
|
if *radius > 0.0 {
|
|
*radius += offset;
|
|
}
|
|
};
|
|
expand(&mut radii.top_left.width);
|
|
expand(&mut radii.top_left.height);
|
|
expand(&mut radii.top_right.width);
|
|
expand(&mut radii.top_right.height);
|
|
expand(&mut radii.bottom_right.width);
|
|
expand(&mut radii.bottom_right.height);
|
|
expand(&mut radii.bottom_left.width);
|
|
expand(&mut radii.bottom_left.height);
|
|
radii
|
|
}
|
|
|
|
fn create_clip_chain(
|
|
radii: wr::BorderRadius,
|
|
rect: units::LayoutRect,
|
|
builder: &mut DisplayListBuilder,
|
|
force_clip_creation: bool,
|
|
) -> Option<ClipChainId> {
|
|
if radii.is_zero() && !force_clip_creation {
|
|
return None;
|
|
}
|
|
|
|
let spatial_id = builder.current_scroll_node_id.spatial_id;
|
|
let parent_clip_chain_id = builder.current_clip_chain_id;
|
|
let new_clip_id = if radii.is_zero() {
|
|
builder.wr().define_clip_rect(spatial_id, rect)
|
|
} else {
|
|
builder.wr().define_clip_rounded_rect(
|
|
spatial_id,
|
|
wr::ComplexClipRegion {
|
|
rect,
|
|
radii,
|
|
mode: wr::ClipMode::Clip,
|
|
},
|
|
)
|
|
};
|
|
|
|
Some(
|
|
builder
|
|
.display_list
|
|
.define_clip_chain(parent_clip_chain_id, [new_clip_id]),
|
|
)
|
|
}
|
|
|
|
/// Resolve the WebRender border-image outset area from the style values.
|
|
fn resolve_border_image_outset(
|
|
outset: BorderImageOutset,
|
|
border: SideOffsets2D<f32, LayoutPixel>,
|
|
) -> SideOffsets2D<f32, LayoutPixel> {
|
|
fn image_outset_for_side(outset: NonNegativeLengthOrNumber, border_width: f32) -> f32 {
|
|
match outset {
|
|
NonNegativeLengthOrNumber::Length(length) => length.px(),
|
|
NonNegativeLengthOrNumber::Number(factor) => border_width * factor.0,
|
|
}
|
|
}
|
|
|
|
SideOffsets2D::new(
|
|
image_outset_for_side(outset.0, border.top),
|
|
image_outset_for_side(outset.1, border.right),
|
|
image_outset_for_side(outset.2, border.bottom),
|
|
image_outset_for_side(outset.3, border.left),
|
|
)
|
|
}
|
|
|
|
/// Resolve the WebRender border-image width from the style values.
|
|
fn resolve_border_image_width(
|
|
width: &BorderImageWidth,
|
|
border: SideOffsets2D<f32, LayoutPixel>,
|
|
border_area: Size2D<f32, LayoutPixel>,
|
|
) -> SideOffsets2D<f32, LayoutPixel> {
|
|
fn image_width_for_side(
|
|
border_image_width: &BorderImageSideWidth,
|
|
border_width: f32,
|
|
total_length: f32,
|
|
) -> f32 {
|
|
match border_image_width {
|
|
BorderImageSideWidth::LengthPercentage(v) => {
|
|
v.to_used_value(Au::from_f32_px(total_length)).to_f32_px()
|
|
},
|
|
BorderImageSideWidth::Number(x) => border_width * x.0,
|
|
BorderImageSideWidth::Auto => border_width,
|
|
}
|
|
}
|
|
|
|
SideOffsets2D::new(
|
|
image_width_for_side(&width.0, border.top, border_area.height),
|
|
image_width_for_side(&width.1, border.right, border_area.width),
|
|
image_width_for_side(&width.2, border.bottom, border_area.height),
|
|
image_width_for_side(&width.3, border.left, border_area.width),
|
|
)
|
|
}
|
|
|
|
/// Resolve the WebRender border-image slice from the style values.
|
|
fn resolve_border_image_slice(
|
|
border_image_slice: &Rect<NonNegative<NumberOrPercentage>>,
|
|
size: Size2D<i32, UnknownUnit>,
|
|
) -> SideOffsets2D<i32, DevicePixel> {
|
|
fn resolve_percentage(value: NonNegative<NumberOrPercentage>, length: i32) -> i32 {
|
|
match value.0 {
|
|
NumberOrPercentage::Percentage(p) => (p.0 * length as f32).round() as i32,
|
|
NumberOrPercentage::Number(n) => n.round() as i32,
|
|
}
|
|
}
|
|
|
|
SideOffsets2D::new(
|
|
resolve_percentage(border_image_slice.0, size.height),
|
|
resolve_percentage(border_image_slice.1, size.width),
|
|
resolve_percentage(border_image_slice.2, size.height),
|
|
resolve_percentage(border_image_slice.3, size.width),
|
|
)
|
|
}
|
|
|
|
pub(super) fn normalize_radii(rect: &units::LayoutRect, radius: &mut wr::BorderRadius) {
|
|
// Normalize radii that add up to > 100%.
|
|
// https://www.w3.org/TR/css-backgrounds-3/#corner-overlap
|
|
// > Let f = min(L_i/S_i), where i ∈ {top, right, bottom, left},
|
|
// > S_i is the sum of the two corresponding radii of the corners on side i,
|
|
// > and L_top = L_bottom = the width of the box,
|
|
// > and L_left = L_right = the height of the box.
|
|
// > If f < 1, then all corner radii are reduced by multiplying them by f.
|
|
let f = (rect.width() / (radius.top_left.width + radius.top_right.width))
|
|
.min(rect.width() / (radius.bottom_left.width + radius.bottom_right.width))
|
|
.min(rect.height() / (radius.top_left.height + radius.bottom_left.height))
|
|
.min(rect.height() / (radius.top_right.height + radius.bottom_right.height));
|
|
if f < 1.0 {
|
|
radius.top_left *= f;
|
|
radius.top_right *= f;
|
|
radius.bottom_right *= f;
|
|
radius.bottom_left *= f;
|
|
}
|
|
}
|
|
|
|
/// <https://drafts.csswg.org/css-shapes-1/#valdef-shape-box-margin-box>
|
|
/// > The corner radii of this shape are determined by the corresponding
|
|
/// > border-radius and margin values. If the ratio of border-radius/margin is 1 or more,
|
|
/// > or margin is negative or zero, then the margin box corner radius is
|
|
/// > max(border-radius + margin, 0). If the ratio of border-radius/margin is less than 1,
|
|
/// > and margin is positive, then the margin box corner radius is
|
|
/// > border-radius + margin * (1 + (ratio-1)^3).
|
|
pub(super) fn compute_margin_box_radius(
|
|
radius: wr::BorderRadius,
|
|
layout_rect: LayoutSize,
|
|
fragment: &BoxFragment,
|
|
) -> wr::BorderRadius {
|
|
let margin = fragment.style.physical_margin();
|
|
let adjust_radius = |radius: f32, margin: f32| -> f32 {
|
|
if margin <= 0. || (radius / margin) >= 1. {
|
|
(radius + margin).max(0.)
|
|
} else {
|
|
radius + (margin * (1. + (radius / margin - 1.).powf(3.)))
|
|
}
|
|
};
|
|
let compute_margin_radius = |radius: LayoutSize,
|
|
layout_rect: LayoutSize,
|
|
margin: Size2D<LengthPercentageOrAuto, UnknownUnit>|
|
|
-> LayoutSize {
|
|
let zero = LengthPercentage::zero();
|
|
let width = margin
|
|
.width
|
|
.auto_is(|| &zero)
|
|
.to_used_value(Au::from_f32_px(layout_rect.width));
|
|
let height = margin
|
|
.height
|
|
.auto_is(|| &zero)
|
|
.to_used_value(Au::from_f32_px(layout_rect.height));
|
|
LayoutSize::new(
|
|
adjust_radius(radius.width, width.to_f32_px()),
|
|
adjust_radius(radius.height, height.to_f32_px()),
|
|
)
|
|
};
|
|
wr::BorderRadius {
|
|
top_left: compute_margin_radius(
|
|
radius.top_left,
|
|
layout_rect,
|
|
Size2D::new(margin.left, margin.top),
|
|
),
|
|
top_right: compute_margin_radius(
|
|
radius.top_right,
|
|
layout_rect,
|
|
Size2D::new(margin.right, margin.top),
|
|
),
|
|
bottom_left: compute_margin_radius(
|
|
radius.bottom_left,
|
|
layout_rect,
|
|
Size2D::new(margin.left, margin.bottom),
|
|
),
|
|
bottom_right: compute_margin_radius(
|
|
radius.bottom_right,
|
|
layout_rect,
|
|
Size2D::new(margin.right, margin.bottom),
|
|
),
|
|
}
|
|
}
|