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servo: Implement stacking contexts and allow multiple layers per

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pipeline. This handles fixed positioning mostly correctly.
This commit is contained in:
Patrick Walton 2014-03-28 12:55:29 -07:00
parent f8e3e50db5
commit cd9d824c21
20 changed files with 1726 additions and 1142 deletions
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11
src/components/script/script_task.rs
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@ -37,7 +37,8 @@ use js::jsapi::{JSObject, JS_InhibitGC, JS_AllowGC, JS_CallFunctionValue};
use js::jsval::NullValue;
use js::rust::{Compartment, Cx, CxUtils, RtUtils};
use js;
use servo_msg::compositor_msg::{FinishedLoading, Loading, PerformingLayout, ScriptListener};
use servo_msg::compositor_msg::{FinishedLoading, LayerId, Loading, PerformingLayout};
use servo_msg::compositor_msg::{ScriptListener};
use servo_msg::constellation_msg::{ConstellationChan, IFrameSandboxed, IFrameUnsandboxed};
use servo_msg::constellation_msg::{LoadIframeUrlMsg, LoadCompleteMsg, LoadUrlMsg, NavigationDirection};
use servo_msg::constellation_msg::{PipelineId, SubpageId, Failure, FailureMsg};
@ -929,10 +930,14 @@ impl ScriptTask {
fn scroll_fragment_point(&self, pipeline_id: PipelineId, page: &Page, node: JS<Element>) {
let (port, chan) = Chan::new();
let node: JS<Node> = NodeCast::from(&node);
let ContentBoxResponse(rect) = page.query_layout(ContentBoxQuery(node.to_trusted_node_address(), chan), port);
let ContentBoxResponse(rect) =
page.query_layout(ContentBoxQuery(node.to_trusted_node_address(), chan), port);
let point = Point2D(to_frac_px(rect.origin.x).to_f32().unwrap(),
to_frac_px(rect.origin.y).to_f32().unwrap());
self.compositor.scroll_fragment_point(pipeline_id, point);
// FIXME(pcwalton): This is pretty bogus when multiple layers are involved. Really
// what needs to happen is that this needs to go through layout to ask which layer
// the element belongs to, and have it send the scroll message to the compositor.
self.compositor.scroll_fragment_point(pipeline_id, LayerId::null(), point);
}
/// This is the main entry point for receiving and dispatching DOM events.