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Canvas: implement transformation matrix rotation.

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This commit is contained in:
Mátyás Mustoha 2015-05-05 13:03:34 +02:00
parent 7b87085c18
commit e3e2119c4c
10 changed files with 15 additions and 45 deletions
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14
components/script/dom/canvasrenderingcontext2d.rs
View file

@ -355,6 +355,20 @@ impl<'a> CanvasRenderingContext2DMethods for JSRef<'a, CanvasRenderingContext2D>
self.update_transform()
}
// https://html.spec.whatwg.org/multipage/#dom-context-2d-rotate
fn Rotate(self, angle: f64) {
if angle == 0.0 || !angle.is_finite() {
return;
}
let (sin, cos) = (angle.sin(), angle.cos());
let transform = self.state.borrow().transform;
self.state.borrow_mut().transform = transform.mul(&Matrix2D::new(cos as f32, sin as f32,
-sin as f32, cos as f32,
0.0, 0.0));
self.update_transform()
}
// https://html.spec.whatwg.org/multipage/#dom-context-2d-translate
fn Translate(self, x: f64, y: f64) {
if !(x.is_finite() && y.is_finite()) {

2
components/script/dom/webidls/CanvasRenderingContext2D.webidl
View file

@ -32,7 +32,7 @@ interface CanvasRenderingContext2D {
// transformations (default transform is the identity matrix)
// attribute SVGMatrix currentTransform;
void scale(unrestricted double x, unrestricted double y);
//void rotate(unrestricted double angle);
void rotate(unrestricted double angle);
void translate(unrestricted double x, unrestricted double y);
void transform(unrestricted double a,
unrestricted double b,

5
tests/wpt/metadata/2dcontext/transformations/2d.transformation.order.html.ini
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@ -1,5 +0,0 @@
[2d.transformation.order.html]
type: testharness
[Transformations are applied in the right order]
expected: FAIL

5
tests/wpt/metadata/2dcontext/transformations/2d.transformation.rotate.direction.html.ini
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@ -1,5 +0,0 @@
[2d.transformation.rotate.direction.html]
type: testharness
[rotate() is clockwise]
expected: FAIL

5
tests/wpt/metadata/2dcontext/transformations/2d.transformation.rotate.nonfinite.html.ini
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@ -1,5 +0,0 @@
[2d.transformation.rotate.nonfinite.html]
type: testharness
[rotate() with Infinity/NaN is ignored]
expected: FAIL

5
tests/wpt/metadata/2dcontext/transformations/2d.transformation.rotate.radians.html.ini
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@ -1,5 +0,0 @@
[2d.transformation.rotate.radians.html]
type: testharness
[rotate() uses radians]
expected: FAIL

5
tests/wpt/metadata/2dcontext/transformations/2d.transformation.rotate.wrap.html.ini
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@ -1,5 +0,0 @@
[2d.transformation.rotate.wrap.html]
type: testharness
[rotate() wraps large positive values correctly]
expected: FAIL

5
tests/wpt/metadata/2dcontext/transformations/2d.transformation.rotate.wrapnegative.html.ini
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@ -1,5 +0,0 @@
[2d.transformation.rotate.wrapnegative.html]
type: testharness
[rotate() wraps large negative values correctly]
expected: FAIL

5
tests/wpt/metadata/2dcontext/transformations/2d.transformation.rotate.zero.html.ini
View file

@ -1,5 +0,0 @@
[2d.transformation.rotate.zero.html]
type: testharness
[rotate() by 0 does nothing]
expected: FAIL

9
tests/wpt/metadata/html/dom/interfaces.html.ini
View file

@ -6828,9 +6828,6 @@
[CanvasRenderingContext2D interface: attribute currentTransform]
expected: FAIL
[CanvasRenderingContext2D interface: operation rotate(unrestricted double)]
expected: FAIL
[CanvasRenderingContext2D interface: operation resetTransform()]
expected: FAIL
@ -6960,12 +6957,6 @@
[CanvasRenderingContext2D interface: document.createElement("canvas").getContext("2d") must inherit property "currentTransform" with the proper type (6)]
expected: FAIL
[CanvasRenderingContext2D interface: document.createElement("canvas").getContext("2d") must inherit property "rotate" with the proper type (8)]
expected: FAIL
[CanvasRenderingContext2D interface: calling rotate(unrestricted double) on document.createElement("canvas").getContext("2d") with too few arguments must throw TypeError]
expected: FAIL
[CanvasRenderingContext2D interface: document.createElement("canvas").getContext("2d") must inherit property "resetTransform" with the proper type (12)]
expected: FAIL