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a5b43b7df1
Everytime a new LayoutContext was created, it created a new origin which caused endless stream of image loads to occur in case of reflow. The reason for this was that the existing image, although cached successfully, was not used because the entry in hashmap did not match because of different(new) origin. This is solved by storing the origin of a window in enum ScriptReflow and used in creating new LayoutContext in case of reflow.
146 lines
4 KiB
Rust
146 lines
4 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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//! This module contains traits in script used generically in the rest of Servo.
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//! The traits are here instead of in script so that these modules won't have
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//! to depend on script.
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#![deny(unsafe_code)]
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#[macro_use]
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extern crate html5ever;
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#[macro_use]
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extern crate malloc_size_of_derive;
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pub mod message;
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pub mod rpc;
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pub mod wrapper_traits;
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use atomic_refcell::AtomicRefCell;
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use canvas_traits::canvas::{CanvasId, CanvasMsg};
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use ipc_channel::ipc::IpcSender;
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use libc::c_void;
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use net_traits::image_cache::PendingImageId;
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use script_traits::UntrustedNodeAddress;
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use servo_url::{ImmutableOrigin, ServoUrl};
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use std::ptr::NonNull;
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use std::sync::atomic::AtomicIsize;
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use style::data::ElementData;
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#[repr(C)]
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pub struct StyleData {
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/// Data that the style system associates with a node. When the
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/// style system is being used standalone, this is all that hangs
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/// off the node. This must be first to permit the various
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/// transmutations between ElementData and PersistentLayoutData.
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pub element_data: AtomicRefCell<ElementData>,
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/// Information needed during parallel traversals.
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pub parallel: DomParallelInfo,
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}
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impl StyleData {
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pub fn new() -> Self {
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Self {
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element_data: AtomicRefCell::new(ElementData::default()),
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parallel: DomParallelInfo::new(),
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}
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}
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}
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#[derive(Clone, Copy, MallocSizeOf)]
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pub struct OpaqueStyleAndLayoutData {
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// NB: We really store a `StyleAndLayoutData` here, so be careful!
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#[ignore_malloc_size_of = "TODO(#6910) Box value that should be counted but \
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the type lives in layout"]
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pub ptr: NonNull<StyleData>,
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}
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#[allow(unsafe_code)]
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unsafe impl Send for OpaqueStyleAndLayoutData {}
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/// Information that we need stored in each DOM node.
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#[derive(MallocSizeOf)]
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pub struct DomParallelInfo {
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/// The number of children remaining to process during bottom-up traversal.
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pub children_to_process: AtomicIsize,
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}
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impl DomParallelInfo {
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pub fn new() -> DomParallelInfo {
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DomParallelInfo {
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children_to_process: AtomicIsize::new(0),
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}
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}
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}
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#[derive(Clone, Copy, Debug, Eq, PartialEq)]
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pub enum LayoutNodeType {
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Element(LayoutElementType),
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Text,
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}
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#[derive(Clone, Copy, Debug, Eq, PartialEq)]
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pub enum LayoutElementType {
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Element,
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HTMLBRElement,
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HTMLCanvasElement,
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HTMLIFrameElement,
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HTMLImageElement,
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HTMLInputElement,
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HTMLMediaElement,
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HTMLObjectElement,
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HTMLParagraphElement,
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HTMLTableCellElement,
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HTMLTableColElement,
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HTMLTableElement,
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HTMLTableRowElement,
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HTMLTableSectionElement,
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HTMLTextAreaElement,
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SVGSVGElement,
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}
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pub enum HTMLCanvasDataSource {
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WebGL(webrender_api::ImageKey),
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Image(Option<IpcSender<CanvasMsg>>),
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}
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pub struct HTMLCanvasData {
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pub source: HTMLCanvasDataSource,
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pub width: u32,
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pub height: u32,
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pub canvas_id: CanvasId,
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}
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pub struct SVGSVGData {
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pub width: u32,
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pub height: u32,
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}
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/// The address of a node known to be valid. These are sent from script to layout.
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#[derive(Clone, Copy, Debug, Eq, PartialEq)]
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pub struct TrustedNodeAddress(pub *const c_void);
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#[allow(unsafe_code)]
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unsafe impl Send for TrustedNodeAddress {}
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/// Whether the pending image needs to be fetched or is waiting on an existing fetch.
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pub enum PendingImageState {
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Unrequested(ServoUrl),
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PendingResponse,
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}
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/// The data associated with an image that is not yet present in the image cache.
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/// Used by the script thread to hold on to DOM elements that need to be repainted
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/// when an image fetch is complete.
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pub struct PendingImage {
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pub state: PendingImageState,
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pub node: UntrustedNodeAddress,
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pub id: PendingImageId,
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pub origin: ImmutableOrigin,
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}
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pub struct HTMLMediaData {
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pub current_frame: Option<(webrender_api::ImageKey, i32, i32)>,
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}
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