990677d856
The old code that attempted to do this during layout wasn't able to work for multiple reasons: it couldn't know where the iframe was going to be on the page (because of nested iframes), and at the time it was building the display list for a fragment it couldn't know where that fragment was going to be in page coordinates. This patch rewrites that code so that only the size of an iframe is determined during layout, and the position is determined by the compositor. Layout layerizes iframes and marks the iframe layers with the appropriate subpage ID so that the compositor can place them correctly. Closes #7377. Source-Repo: https://github.com/servo/servo Source-Revision: a0cb657fe80859dd8862361631268479d1045432
73 lines
2.3 KiB
Rust
73 lines
2.3 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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use construct::ConstructionResult;
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use incremental::RestyleDamage;
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use parallel::DomParallelInfo;
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use script::dom::node::SharedLayoutData;
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use std::sync::Arc;
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use style::properties::ComputedValues;
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/// Data that layout associates with a node.
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pub struct PrivateLayoutData {
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/// The results of CSS styling for this node's `before` pseudo-element, if any.
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pub before_style: Option<Arc<ComputedValues>>,
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/// The results of CSS styling for this node's `after` pseudo-element, if any.
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pub after_style: Option<Arc<ComputedValues>>,
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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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/// The current results of flow construction for this node. This is either a flow or a
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/// `ConstructionItem`. See comments in `construct.rs` for more details.
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pub flow_construction_result: ConstructionResult,
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pub before_flow_construction_result: ConstructionResult,
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pub after_flow_construction_result: ConstructionResult,
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/// Information needed during parallel traversals.
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pub parallel: DomParallelInfo,
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/// Various flags.
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pub flags: LayoutDataFlags,
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}
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impl PrivateLayoutData {
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/// Creates new layout data.
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pub fn new() -> PrivateLayoutData {
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PrivateLayoutData {
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before_style: None,
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after_style: None,
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restyle_damage: RestyleDamage::empty(),
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flow_construction_result: ConstructionResult::None,
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before_flow_construction_result: ConstructionResult::None,
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after_flow_construction_result: ConstructionResult::None,
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parallel: DomParallelInfo::new(),
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flags: LayoutDataFlags::empty(),
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}
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}
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}
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bitflags! {
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flags LayoutDataFlags: u8 {
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#[doc = "Whether a flow has been newly constructed."]
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const HAS_NEWLY_CONSTRUCTED_FLOW = 0x01
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}
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}
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pub struct LayoutDataWrapper {
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pub shared_data: SharedLayoutData,
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pub data: Box<PrivateLayoutData>,
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}
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#[allow(dead_code, unsafe_code)]
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fn static_assertion(x: Option<LayoutDataWrapper>) {
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unsafe {
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let _: Option<::script::dom::node::LayoutData> =
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::std::intrinsics::transmute(x);
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}
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}
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