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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" | |
8 #include "core/html/canvas/CanvasContextCreationAttributes.h" | 7 #include "core/html/canvas/CanvasContextCreationAttributes.h" |
9 #include "core/html/canvas/CanvasRenderingContext.h" | 8 #include "core/html/canvas/CanvasRenderingContext.h" |
10 | 9 |
11 namespace blink { | 10 namespace blink { |
12 | 11 |
13 void HTMLCanvasElementModule::getContext(HTMLCanvasElement& canvas, const String
& type, const CanvasContextCreationAttributes& attributes, RenderingContext& res
ult) | 12 void HTMLCanvasElementModule::getContext(HTMLCanvasElement& canvas, const String
& type, const CanvasContextCreationAttributes& attributes, RenderingContext& res
ult) |
14 { | 13 { |
15 CanvasRenderingContext* context = canvas.getCanvasRenderingContext(type, att
ributes); | 14 CanvasRenderingContext* context = canvas.getCanvasRenderingContext(type, att
ributes); |
16 if (context) { | 15 if (context) { |
17 context->setCanvasGetContextResult(result); | 16 context->setCanvasGetContextResult(result); |
18 } | 17 } |
19 } | 18 } |
20 | 19 |
21 OffscreenCanvas* HTMLCanvasElementModule::transferControlToOffscreen(HTMLCanvasE
lement& canvas, ExceptionState& exceptionState) | 20 OffscreenCanvas* HTMLCanvasElementModule::transferControlToOffscreen(HTMLCanvasE
lement& canvas, ExceptionState& exceptionState) |
22 { | 21 { |
23 if (canvas.renderingContext()) { | 22 if (canvas.renderingContext()) { |
24 exceptionState.throwDOMException(InvalidStateError, "Cannot transfer con
trol from a canvas that has a rendering context."); | 23 exceptionState.throwDOMException(InvalidStateError, "Cannot transfer con
trol from a canvas that has a rendering context."); |
25 return nullptr; | 24 return nullptr; |
26 } | 25 } |
27 OffscreenCanvas* offscreenCanvas = OffscreenCanvas::create(canvas.width(), c
anvas.height()); | 26 OffscreenCanvas* offscreenCanvas = OffscreenCanvas::create(canvas.width(), c
anvas.height()); |
28 offscreenCanvas->setAssociatedCanvasId(DOMNodeIds::idForNode(&canvas)); | 27 offscreenCanvas->setAssociatedCanvas(&canvas); |
29 return offscreenCanvas; | 28 return offscreenCanvas; |
30 } | 29 } |
31 | 30 |
32 } | 31 } |
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