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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/offscreencanvas2d/OffscreenCanvasRenderingContext2D.h" | 5 #include "modules/offscreencanvas2d/OffscreenCanvasRenderingContext2D.h" |
6 | 6 |
7 #include "bindings/modules/v8/OffscreenCanvasRenderingContext2DOrWebGLRenderingC
ontextOrWebGL2RenderingContext.h" | 7 #include "bindings/modules/v8/OffscreenCanvasRenderingContext2DOrWebGLRenderingC
ontextOrWebGL2RenderingContext.h" |
8 #include "core/frame/ImageBitmap.h" | 8 #include "core/frame/ImageBitmap.h" |
9 #include "core/frame/Settings.h" | 9 #include "core/frame/Settings.h" |
10 #include "core/workers/WorkerGlobalScope.h" | 10 #include "core/workers/WorkerGlobalScope.h" |
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46 | 46 |
47 void OffscreenCanvasRenderingContext2D::commit(ExceptionState& exceptionState) | 47 void OffscreenCanvasRenderingContext2D::commit(ExceptionState& exceptionState) |
48 { | 48 { |
49 if (getOffscreenCanvas()->getAssociatedCanvasId() < 0) { | 49 if (getOffscreenCanvas()->getAssociatedCanvasId() < 0) { |
50 // If an OffscreenCanvas has no associated canvas Id, it indicates that | 50 // If an OffscreenCanvas has no associated canvas Id, it indicates that |
51 // it is not an OffscreenCanvas created by transfering control from html | 51 // it is not an OffscreenCanvas created by transfering control from html |
52 // canvas. | 52 // canvas. |
53 exceptionState.throwDOMException(InvalidStateError, "Commit() was called
on a context whose OffscreenCanvas is not associated with a canvas element."); | 53 exceptionState.throwDOMException(InvalidStateError, "Commit() was called
on a context whose OffscreenCanvas is not associated with a canvas element."); |
54 return; | 54 return; |
55 } | 55 } |
56 getOffscreenCanvas()->getOrCreateFrameDispatcher()->dispatchFrame(nullptr); | 56 getOffscreenCanvas()->getOrCreateFrameDispatcher()->dispatchFrame(this->tran
sferToStaticImageBitmap(), this->isAccelerated()); |
57 } | 57 } |
58 | 58 |
59 // BaseRenderingContext2D implementation | 59 // BaseRenderingContext2D implementation |
60 bool OffscreenCanvasRenderingContext2D::originClean() const | 60 bool OffscreenCanvasRenderingContext2D::originClean() const |
61 { | 61 { |
62 return getOffscreenCanvas()->originClean(); | 62 return getOffscreenCanvas()->originClean(); |
63 } | 63 } |
64 | 64 |
65 void OffscreenCanvasRenderingContext2D::setOriginTainted() | 65 void OffscreenCanvasRenderingContext2D::setOriginTainted() |
66 { | 66 { |
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117 | 117 |
118 if (m_needsMatrixClipRestore) { | 118 if (m_needsMatrixClipRestore) { |
119 restoreMatrixClipStack(m_imageBuffer->canvas()); | 119 restoreMatrixClipStack(m_imageBuffer->canvas()); |
120 nonConstThis->m_needsMatrixClipRestore = false; | 120 nonConstThis->m_needsMatrixClipRestore = false; |
121 } | 121 } |
122 } | 122 } |
123 | 123 |
124 return m_imageBuffer.get(); | 124 return m_imageBuffer.get(); |
125 } | 125 } |
126 | 126 |
127 ImageBitmap* OffscreenCanvasRenderingContext2D::transferToImageBitmap(ExceptionS
tate& exceptionState) | 127 bool OffscreenCanvasRenderingContext2D::isAccelerated() const |
| 128 { |
| 129 if (!hasImageBuffer()) |
| 130 return false; |
| 131 return m_imageBuffer->isAccelerated(); |
| 132 } |
| 133 |
| 134 PassRefPtr<StaticBitmapImage> OffscreenCanvasRenderingContext2D::transferToStati
cImageBitmap() |
128 { | 135 { |
129 if (!imageBuffer()) | 136 if (!imageBuffer()) |
130 return nullptr; | 137 return nullptr; |
131 sk_sp<SkImage> skImage = m_imageBuffer->newSkImageSnapshot(PreferAcceleratio
n, SnapshotReasonTransferToImageBitmap); | 138 sk_sp<SkImage> skImage = m_imageBuffer->newSkImageSnapshot(PreferAcceleratio
n, SnapshotReasonTransferToImageBitmap); |
132 RefPtr<StaticBitmapImage> image = StaticBitmapImage::create(std::move(skImag
e)); | 139 RefPtr<StaticBitmapImage> image = StaticBitmapImage::create(std::move(skImag
e)); |
133 image->setOriginClean(this->originClean()); | 140 image->setOriginClean(this->originClean()); |
| 141 return image.release(); |
| 142 } |
| 143 |
| 144 ImageBitmap* OffscreenCanvasRenderingContext2D::transferToImageBitmap(ExceptionS
tate& exceptionState) |
| 145 { |
| 146 RefPtr<StaticBitmapImage> image = transferToStaticImageBitmap(); |
| 147 if (!image) |
| 148 return nullptr; |
134 m_imageBuffer.reset(); // "Transfer" means no retained buffer | 149 m_imageBuffer.reset(); // "Transfer" means no retained buffer |
135 m_needsMatrixClipRestore = true; | 150 m_needsMatrixClipRestore = true; |
136 return ImageBitmap::create(image.release()); | 151 return ImageBitmap::create(image.release()); |
137 } | 152 } |
138 | 153 |
139 PassRefPtr<Image> OffscreenCanvasRenderingContext2D::getImage(AccelerationHint h
int, SnapshotReason reason) const | 154 PassRefPtr<Image> OffscreenCanvasRenderingContext2D::getImage(AccelerationHint h
int, SnapshotReason reason) const |
140 { | 155 { |
141 if (!imageBuffer()) | 156 if (!imageBuffer()) |
142 return nullptr; | 157 return nullptr; |
143 sk_sp<SkImage> skImage = m_imageBuffer->newSkImageSnapshot(hint, reason); | 158 sk_sp<SkImage> skImage = m_imageBuffer->newSkImageSnapshot(hint, reason); |
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210 bool OffscreenCanvasRenderingContext2D::isContextLost() const | 225 bool OffscreenCanvasRenderingContext2D::isContextLost() const |
211 { | 226 { |
212 return false; | 227 return false; |
213 } | 228 } |
214 | 229 |
215 bool OffscreenCanvasRenderingContext2D::isPaintable() const | 230 bool OffscreenCanvasRenderingContext2D::isPaintable() const |
216 { | 231 { |
217 return this->imageBuffer(); | 232 return this->imageBuffer(); |
218 } | 233 } |
219 } | 234 } |
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