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Canvas: implement transformation matrix reset.

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This commit is contained in:
Mátyás Mustoha 2015-05-05 15:39:35 +02:00
parent ccf1e6b9a7
commit 9302aaab96
6 changed files with 72 additions and 7 deletions
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6
components/script/dom/canvasrenderingcontext2d.rs
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@ -413,6 +413,12 @@ impl<'a> CanvasRenderingContext2DMethods for JSRef<'a, CanvasRenderingContext2D>
self.update_transform()
}
// https://html.spec.whatwg.org/multipage/#dom-context-2d-resettransform
fn ResetTransform(self) {
self.state.borrow_mut().transform = Matrix2D::identity();
self.update_transform()
}
// https://html.spec.whatwg.org/multipage/#dom-context-2d-globalalpha
fn GlobalAlpha(self) -> f64 {
let state = self.state.borrow();

2
components/script/dom/webidls/CanvasRenderingContext2D.webidl
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@ -46,7 +46,7 @@ interface CanvasRenderingContext2D {
unrestricted double d,
unrestricted double e,
unrestricted double f);
//void resetTransform();
void resetTransform();
// compositing
attribute unrestricted double globalAlpha; // (default 1.0)