mirror of
https://github.com/servo/servo.git
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c72fffa8f8
We don't need this for Gecko, and it's hard to implement in that case because there's nowhere obvious to put it (we don't plan to create TSDs for non-dirty nodes, and non-dirty nodes can have dirty children which require the children_to_process atomic). There are various solutions here, but punting is the easiest. We'll need to rethink this if/when we need to do a bottom-up traversal for Gecko.
158 lines
4.2 KiB
Rust
158 lines
4.2 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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//! 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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#![feature(box_syntax)]
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#![feature(custom_attribute)]
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#![feature(custom_derive)]
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#![feature(nonzero)]
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#![feature(plugin)]
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#![plugin(heapsize_plugin)]
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#![plugin(plugins)]
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extern crate app_units;
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#[allow(unused_extern_crates)]
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#[macro_use]
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extern crate bitflags;
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extern crate canvas_traits;
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extern crate core;
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extern crate cssparser;
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extern crate euclid;
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extern crate gfx_traits;
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extern crate heapsize;
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extern crate ipc_channel;
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extern crate libc;
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#[macro_use]
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extern crate log;
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extern crate msg;
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extern crate net_traits;
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extern crate profile_traits;
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extern crate range;
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extern crate script_traits;
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extern crate selectors;
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#[macro_use(atom, ns)]
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extern crate string_cache;
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extern crate style;
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extern crate url;
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extern crate util;
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pub mod message;
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pub mod reporter;
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pub mod restyle_damage;
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pub mod rpc;
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pub mod wrapper_traits;
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use canvas_traits::CanvasMsg;
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use core::nonzero::NonZero;
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use ipc_channel::ipc::IpcSender;
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use libc::c_void;
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use restyle_damage::RestyleDamage;
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use std::sync::atomic::AtomicIsize;
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use style::atomic_refcell::AtomicRefCell;
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use style::data::PersistentStyleData;
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pub struct PartialPersistentLayoutData {
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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 PersistentStyleData and PersistentLayoutData.
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pub style_data: PersistentStyleData,
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/// Description of how to account for recent style changes.
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pub restyle_damage: RestyleDamage,
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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 PartialPersistentLayoutData {
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pub fn new() -> Self {
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PartialPersistentLayoutData {
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style_data: PersistentStyleData::new(),
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restyle_damage: RestyleDamage::empty(),
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parallel: DomParallelInfo::new(),
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}
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}
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}
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#[derive(Copy, Clone, HeapSizeOf)]
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pub struct OpaqueStyleAndLayoutData {
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#[ignore_heap_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: NonZero<*mut AtomicRefCell<PartialPersistentLayoutData>>
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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(HeapSizeOf)]
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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(Copy, Clone, PartialEq, Eq, Debug)]
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pub enum LayoutNodeType {
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Comment,
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Document,
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DocumentFragment,
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DocumentType,
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Element(LayoutElementType),
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ProcessingInstruction,
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Text,
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}
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#[derive(Copy, Clone, PartialEq, Eq, Debug)]
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pub enum LayoutElementType {
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Element,
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HTMLCanvasElement,
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HTMLIFrameElement,
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HTMLImageElement,
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HTMLInputElement,
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HTMLObjectElement,
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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 struct HTMLCanvasData {
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pub ipc_renderer: Option<IpcSender<CanvasMsg>>,
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pub width: u32,
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pub height: u32,
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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, PartialEq, Eq, Copy)]
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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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pub fn is_image_data(uri: &str) -> bool {
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static TYPES: &'static [&'static str] = &["data:image/png", "data:image/gif", "data:image/jpeg"];
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TYPES.iter().any(|&type_| uri.starts_with(type_))
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}
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