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1 // Copyright 2015 The Chromium Authors. All rights reserved. | 1 // Copyright 2015 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 "core/offscreencanvas/OffscreenCanvas.h" | 5 #include "core/offscreencanvas/OffscreenCanvas.h" |
6 | 6 |
7 #include "core/dom/ExceptionCode.h" | 7 #include "core/dom/ExceptionCode.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/html/canvas/CanvasRenderingContextFactory.h" | 10 #include "core/html/canvas/CanvasRenderingContextFactory.h" |
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54 return nullptr; | 54 return nullptr; |
55 } | 55 } |
56 ImageBitmap* image = m_context->transferToImageBitmap(exceptionState); | 56 ImageBitmap* image = m_context->transferToImageBitmap(exceptionState); |
57 if (!image) { | 57 if (!image) { |
58 // Undocumented exception (not in spec) | 58 // Undocumented exception (not in spec) |
59 exceptionState.throwDOMException(V8Error, "Out of memory"); | 59 exceptionState.throwDOMException(V8Error, "Out of memory"); |
60 } | 60 } |
61 return image; | 61 return image; |
62 } | 62 } |
63 | 63 |
| 64 PassRefPtr<Image> OffscreenCanvas::getSourceImageForCanvas(SourceImageStatus* st
atus, AccelerationHint, SnapshotReason reason, const FloatSize&) const |
| 65 { |
| 66 if (!m_context) { |
| 67 *status = InvalidSourceImageStatus; |
| 68 return nullptr; |
| 69 } |
| 70 *status = NormalSourceImageStatus; |
| 71 return m_context->getImage(reason); |
| 72 } |
| 73 |
| 74 bool OffscreenCanvas::isOpaque() const |
| 75 { |
| 76 if (!m_context) |
| 77 return false; |
| 78 return !m_context->hasAlpha(); |
| 79 } |
| 80 |
64 CanvasRenderingContext* OffscreenCanvas::getCanvasRenderingContext(ScriptState*
scriptState, const String& id, const CanvasContextCreationAttributes& attributes
) | 81 CanvasRenderingContext* OffscreenCanvas::getCanvasRenderingContext(ScriptState*
scriptState, const String& id, const CanvasContextCreationAttributes& attributes
) |
65 { | 82 { |
66 CanvasRenderingContext::ContextType contextType = CanvasRenderingContext::co
ntextTypeFromId(id); | 83 CanvasRenderingContext::ContextType contextType = CanvasRenderingContext::co
ntextTypeFromId(id); |
67 | 84 |
68 // Unknown type. | 85 // Unknown type. |
69 if (contextType == CanvasRenderingContext::ContextTypeCount) | 86 if (contextType == CanvasRenderingContext::ContextTypeCount) |
70 return nullptr; | 87 return nullptr; |
71 | 88 |
72 CanvasRenderingContextFactory* factory = getRenderingContextFactory(contextT
ype); | 89 CanvasRenderingContextFactory* factory = getRenderingContextFactory(contextT
ype); |
73 if (!factory) | 90 if (!factory) |
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116 return ImageBuffer::canCreateImageBuffer(m_size); | 133 return ImageBuffer::canCreateImageBuffer(m_size); |
117 return m_context->isPaintable(); | 134 return m_context->isPaintable(); |
118 } | 135 } |
119 | 136 |
120 DEFINE_TRACE(OffscreenCanvas) | 137 DEFINE_TRACE(OffscreenCanvas) |
121 { | 138 { |
122 visitor->trace(m_context); | 139 visitor->trace(m_context); |
123 } | 140 } |
124 | 141 |
125 } // namespace blink | 142 } // namespace blink |
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