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1 // Copyright 2016 The Chromium Authors. All rights reserved. | 1 // Copyright 2016 The Chromium Authors. All rights reserved. |
2 // Use of this source code is governed by a BSD-style license that can be | 2 // Use of this source code is governed by a BSD-style license that can be |
3 // found in the LICENSE file. | 3 // found in the LICENSE file. |
4 | 4 |
5 #include "modules/canvas/HTMLCanvasElementModule.h" | 5 #include "modules/canvas/HTMLCanvasElementModule.h" |
6 | 6 |
7 #include "core/dom/DOMNodeIds.h" | 7 #include "core/dom/DOMNodeIds.h" |
8 #include "core/html/canvas/CanvasContextCreationAttributes.h" | 8 #include "core/html/canvas/CanvasContextCreationAttributes.h" |
9 #include "core/html/canvas/CanvasRenderingContext.h" | 9 #include "core/html/canvas/CanvasRenderingContext.h" |
10 #include "core/offscreencanvas/OffscreenCanvas.h" | 10 #include "core/offscreencanvas/OffscreenCanvas.h" |
11 | 11 |
12 namespace blink { | 12 namespace blink { |
13 | 13 |
14 void HTMLCanvasElementModule::getContext(HTMLCanvasElement& canvas, const String
& type, const CanvasContextCreationAttributes& attributes, RenderingContext& res
ult) | 14 void HTMLCanvasElementModule::getContext(HTMLCanvasElement& canvas, const String
& type, const CanvasContextCreationAttributes& attributes, RenderingContext& res
ult) |
15 { | 15 { |
16 CanvasRenderingContext* context = canvas.getCanvasRenderingContext(type, att
ributes); | 16 CanvasRenderingContext* context = canvas.getCanvasRenderingContext(type, att
ributes); |
17 if (context) { | 17 if (context) { |
18 context->setCanvasGetContextResult(result); | 18 context->setCanvasGetContextResult(result); |
19 } | 19 } |
20 } | 20 } |
21 | 21 |
22 OffscreenCanvas* HTMLCanvasElementModule::transferControlToOffscreen(HTMLCanvasE
lement& canvas, ExceptionState& exceptionState) | 22 OffscreenCanvas* HTMLCanvasElementModule::transferControlToOffscreen(HTMLCanvasE
lement& canvas, ExceptionState& exceptionState) |
23 { | 23 { |
24 if (canvas.renderingContext()) { | 24 if (canvas.renderingContext()) { |
25 exceptionState.throwDOMException(InvalidStateError, "Cannot transfer con
trol from a canvas that has a rendering context."); | 25 exceptionState.throwDOMException(InvalidStateError, "Cannot transfer con
trol from a canvas that has a rendering context."); |
26 return nullptr; | 26 return nullptr; |
27 } | 27 } |
28 OffscreenCanvas* offscreenCanvas = OffscreenCanvas::create(canvas.width(), c
anvas.height()); | 28 OffscreenCanvas* offscreenCanvas = OffscreenCanvas::create(canvas.width(), c
anvas.height()); |
29 offscreenCanvas->setAssociatedCanvasId(DOMNodeIds::idForNode(&canvas)); | 29 offscreenCanvas->setAssociatedCanvasId(DOMNodeIds::idForNode(&canvas)); |
30 canvas.createSurfaceLayerBridge(); | 30 |
| 31 canvas.getSurfaceLayerBridge()->createSurfaceLayer(canvas.width(), canvas.he
ight()); |
| 32 |
31 return offscreenCanvas; | 33 return offscreenCanvas; |
32 } | 34 } |
33 | 35 |
34 } | 36 } |
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