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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( | 14 void HTMLCanvasElementModule::getContext( |
15 HTMLCanvasElement& canvas, | 15 HTMLCanvasElement& canvas, |
16 const String& type, | 16 const String& type, |
17 const CanvasContextCreationAttributes& attributes, | 17 const CanvasContextCreationAttributes& attributes, |
18 ExceptionState& exceptionState, | 18 ExceptionState& exceptionState, |
19 RenderingContext& result) { | 19 RenderingContext& result) { |
20 if (canvas.surfaceLayerBridge()) { | 20 if (canvas.surfaceLayerBridge()) { |
21 // The existence of canvas surfaceLayerBridge indicates that HTMLCanvasEleme
nt.transferControlToOffscreen() has been called. | 21 // The existence of canvas surfaceLayerBridge indicates that |
| 22 // HTMLCanvasElement.transferControlToOffscreen() has been called. |
22 exceptionState.throwDOMException(InvalidStateError, | 23 exceptionState.throwDOMException(InvalidStateError, |
23 "Cannot get context from a canvas that " | 24 "Cannot get context from a canvas that " |
24 "has transferred its control to " | 25 "has transferred its control to " |
25 "offscreen."); | 26 "offscreen."); |
26 return; | 27 return; |
27 } | 28 } |
28 | 29 |
29 CanvasRenderingContext* context = | 30 CanvasRenderingContext* context = |
30 canvas.getCanvasRenderingContext(type, attributes); | 31 canvas.getCanvasRenderingContext(type, attributes); |
31 if (context) { | 32 if (context) { |
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64 // If a bridge exists, it means canvas.createSurfaceLayer() has been called | 65 // If a bridge exists, it means canvas.createSurfaceLayer() has been called |
65 // and its SurfaceId has been populated as well. | 66 // and its SurfaceId has been populated as well. |
66 // TODO(fsamuel): Plumb FrameSinkId into blink. | 67 // TODO(fsamuel): Plumb FrameSinkId into blink. |
67 offscreenCanvas->setSurfaceId( | 68 offscreenCanvas->setSurfaceId( |
68 bridge->getSurfaceId().frame_sink_id().client_id(), | 69 bridge->getSurfaceId().frame_sink_id().client_id(), |
69 bridge->getSurfaceId().local_id(), bridge->getSurfaceId().nonce()); | 70 bridge->getSurfaceId().local_id(), bridge->getSurfaceId().nonce()); |
70 } | 71 } |
71 return offscreenCanvas; | 72 return offscreenCanvas; |
72 } | 73 } |
73 } | 74 } |
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