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1 /* | 1 /* |
2 * Copyright (C) 2004, 2006, 2007 Apple Inc. All rights reserved. | 2 * Copyright (C) 2004, 2006, 2007 Apple Inc. All rights reserved. |
3 * Copyright (C) 2007 Alp Toker <alp@atoker.com> | 3 * Copyright (C) 2007 Alp Toker <alp@atoker.com> |
4 * Copyright (C) 2010 Torch Mobile (Beijing) Co. Ltd. All rights reserved. | 4 * Copyright (C) 2010 Torch Mobile (Beijing) Co. Ltd. All rights reserved. |
5 * | 5 * |
6 * Redistribution and use in source and binary forms, with or without | 6 * Redistribution and use in source and binary forms, with or without |
7 * modification, are permitted provided that the following conditions | 7 * modification, are permitted provided that the following conditions |
8 * are met: | 8 * are met: |
9 * 1. Redistributions of source code must retain the above copyright | 9 * 1. Redistributions of source code must retain the above copyright |
10 * notice, this list of conditions and the following disclaimer. | 10 * notice, this list of conditions and the following disclaimer. |
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456 lowercaseMimeType = "image/png"; | 456 lowercaseMimeType = "image/png"; |
457 | 457 |
458 return lowercaseMimeType; | 458 return lowercaseMimeType; |
459 } | 459 } |
460 | 460 |
461 const AtomicString HTMLCanvasElement::imageSourceURL() const | 461 const AtomicString HTMLCanvasElement::imageSourceURL() const |
462 { | 462 { |
463 return AtomicString(toDataURLInternal("image/png", 0, FrontBuffer)); | 463 return AtomicString(toDataURLInternal("image/png", 0, FrontBuffer)); |
464 } | 464 } |
465 | 465 |
466 ImageData* HTMLCanvasElement::toImageData(SourceDrawingBuffer sourceBuffer) cons
t | |
467 { | |
468 ImageData* imageData; | |
469 if (is3D()) { | |
470 // Get non-premultiplied data because of inaccurate premultiplied alpha
conversion of buffer()->toDataURL(). | |
471 imageData = m_context->paintRenderingResultsToImageData(sourceBuffer); | |
472 if (imageData) | |
473 return imageData; | |
474 | |
475 m_context->paintRenderingResultsToCanvas(sourceBuffer); | |
476 imageData = ImageData::create(m_size); | |
477 SkImageInfo imageInfo = SkImageInfo::Make(width(), height(), kRGBA_8888_
SkColorType, kUnpremul_SkAlphaType); | |
478 buffer()->bitmap().readPixels(imageInfo, imageData->data()->data(), imag
eInfo.minRowBytes(), 0, 0); | |
479 return imageData; | |
480 } | |
481 | |
482 imageData = ImageData::create(m_size); | |
483 | |
484 if (m_context) { | |
485 ASSERT(m_context->is2d()); | |
486 SkImageInfo imageInfo = SkImageInfo::Make(width(), height(), kRGBA_8888_
SkColorType, kUnpremul_SkAlphaType); | |
487 buffer()->bitmap().readPixels(imageInfo, imageData->data()->data(), imag
eInfo.minRowBytes(), 0, 0); | |
488 } | |
489 return imageData; | |
490 } | |
491 | |
492 String HTMLCanvasElement::toDataURLInternal(const String& mimeType, const double
* quality, SourceDrawingBuffer sourceBuffer) const | 466 String HTMLCanvasElement::toDataURLInternal(const String& mimeType, const double
* quality, SourceDrawingBuffer sourceBuffer) const |
493 { | 467 { |
494 if (!isPaintable()) | 468 if (!isPaintable()) |
495 return String("data:,"); | 469 return String("data:,"); |
496 | 470 |
497 String encodingMimeType = toEncodingMimeType(mimeType); | 471 String encodingMimeType = toEncodingMimeType(mimeType); |
| 472 if (!m_context) { |
| 473 ImageData* imageData = ImageData::create(m_size); |
| 474 ScopedDisposal<ImageData> disposer(imageData); |
| 475 return ImageDataBuffer(imageData->size(), imageData->data()->data()).toD
ataURL(encodingMimeType, quality); |
| 476 } |
498 | 477 |
499 ImageData* imageData = toImageData(sourceBuffer); | 478 if (m_context->is3d()) { |
500 ScopedDisposal<ImageData> disposer(imageData); | 479 // Get non-premultiplied data because of inaccurate premultiplied alpha
conversion of buffer()->toDataURL(). |
| 480 ImageData* imageData = m_context->paintRenderingResultsToImageData(sourc
eBuffer); |
| 481 ScopedDisposal<ImageData> disposer(imageData); |
| 482 if (imageData) |
| 483 return ImageDataBuffer(imageData->size(), imageData->data()->data())
.toDataURL(encodingMimeType, quality); |
| 484 m_context->paintRenderingResultsToCanvas(sourceBuffer); |
| 485 } |
501 | 486 |
502 return ImageDataBuffer(imageData->size(), imageData->data()->data()).toDataU
RL(encodingMimeType, quality); | 487 return buffer()->toDataURL(encodingMimeType, quality); |
503 } | 488 } |
504 | 489 |
505 String HTMLCanvasElement::toDataURL(const String& mimeType, const ScriptValue& q
ualityArgument, ExceptionState& exceptionState) const | 490 String HTMLCanvasElement::toDataURL(const String& mimeType, const ScriptValue& q
ualityArgument, ExceptionState& exceptionState) const |
506 { | 491 { |
507 if (!originClean()) { | 492 if (!originClean()) { |
508 exceptionState.throwSecurityError("Tainted canvases may not be exported.
"); | 493 exceptionState.throwSecurityError("Tainted canvases may not be exported.
"); |
509 return String(); | 494 return String(); |
510 } | 495 } |
511 double quality; | 496 double quality; |
512 double* qualityPtr = nullptr; | 497 double* qualityPtr = nullptr; |
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876 { | 861 { |
877 return FloatSize(width(), height()); | 862 return FloatSize(width(), height()); |
878 } | 863 } |
879 | 864 |
880 bool HTMLCanvasElement::isOpaque() const | 865 bool HTMLCanvasElement::isOpaque() const |
881 { | 866 { |
882 return m_context && !m_context->hasAlpha(); | 867 return m_context && !m_context->hasAlpha(); |
883 } | 868 } |
884 | 869 |
885 } // blink | 870 } // blink |
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