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Pass all the data layout needs from canvas elements at once.

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This commit is contained in:
Ms2ger 2015-10-26 11:43:23 +01:00
parent a5a4ef7d70
commit b1f4bf617d
4 changed files with 40 additions and 68 deletions
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65
components/script/dom/htmlcanvaselement.rs
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@ -89,48 +89,41 @@ impl HTMLCanvasElement {
}
}
pub struct HTMLCanvasData {
pub renderer_id: Option<usize>,
pub ipc_renderer: Option<IpcSender<CanvasMsg>>,
pub width: u32,
pub height: u32,
}
pub trait LayoutHTMLCanvasElementHelpers {
#[allow(unsafe_code)]
unsafe fn get_renderer_id(&self) -> Option<usize>;
#[allow(unsafe_code)]
unsafe fn get_ipc_renderer(&self) -> Option<IpcSender<CanvasMsg>>;
#[allow(unsafe_code)]
unsafe fn get_canvas_width(&self) -> u32;
#[allow(unsafe_code)]
unsafe fn get_canvas_height(&self) -> u32;
fn data(&self) -> HTMLCanvasData;
}
impl LayoutHTMLCanvasElementHelpers for LayoutJS<HTMLCanvasElement> {
#[allow(unsafe_code)]
unsafe fn get_renderer_id(&self) -> Option<usize> {
let ref canvas = *self.unsafe_get();
canvas.context.borrow_for_layout().as_ref().map(|context| {
match *context {
CanvasContext::Context2d(ref context) => context.to_layout().get_renderer_id(),
CanvasContext::WebGL(ref context) => context.to_layout().get_renderer_id(),
fn data(&self) -> HTMLCanvasData {
unsafe {
let canvas = &*self.unsafe_get();
let (renderer_id, ipc_renderer) = match canvas.context.borrow_for_layout().as_ref() {
Some(&CanvasContext::Context2d(ref context)) => {
let context = context.to_layout();
(Some(context.get_renderer_id()), Some(context.get_ipc_renderer()))
},
Some(&CanvasContext::WebGL(ref context)) => {
let context = context.to_layout();
(Some(context.get_renderer_id()), Some(context.get_ipc_renderer()))
},
None => (None, None),
};
HTMLCanvasData {
renderer_id: renderer_id,
ipc_renderer: ipc_renderer,
width: canvas.width.get(),
height: canvas.height.get(),
}
})
}
#[allow(unsafe_code)]
unsafe fn get_ipc_renderer(&self) -> Option<IpcSender<CanvasMsg>> {
let ref canvas = *self.unsafe_get();
canvas.context.borrow_for_layout().as_ref().map(|context| {
match *context {
CanvasContext::Context2d(ref context) => context.to_layout().get_ipc_renderer(),
CanvasContext::WebGL(ref context) => context.to_layout().get_ipc_renderer(),
}
})
}
#[allow(unsafe_code)]
unsafe fn get_canvas_width(&self) -> u32 {
(*self.unsafe_get()).width.get()
}
#[allow(unsafe_code)]
unsafe fn get_canvas_height(&self) -> u32 {
(*self.unsafe_get()).height.get()
}
}
}