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| 1 /* | 1 /* |
| 2 * Copyright 2011 Google Inc. | 2 * Copyright 2011 Google Inc. |
| 3 * | 3 * |
| 4 * Use of this source code is governed by a BSD-style license that can be | 4 * Use of this source code is governed by a BSD-style license that can be |
| 5 * found in the LICENSE file. | 5 * found in the LICENSE file. |
| 6 */ | 6 */ |
| 7 | 7 |
| 8 #include "SkPDFDevice.h" | 8 #include "SkPDFDevice.h" |
| 9 | 9 |
| 10 #include "SkAnnotationKeys.h" | 10 #include "SkAnnotationKeys.h" |
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| 588 | 588 |
| 589 | 589 |
| 590 struct ContentEntry { | 590 struct ContentEntry { |
| 591 GraphicStateEntry fState; | 591 GraphicStateEntry fState; |
| 592 SkDynamicMemoryWStream fContent; | 592 SkDynamicMemoryWStream fContent; |
| 593 SkAutoTDelete<ContentEntry> fNext; | 593 SkAutoTDelete<ContentEntry> fNext; |
| 594 | 594 |
| 595 // If the stack is too deep we could get Stack Overflow. | 595 // If the stack is too deep we could get Stack Overflow. |
| 596 // So we manually destruct the object. | 596 // So we manually destruct the object. |
| 597 ~ContentEntry() { | 597 ~ContentEntry() { |
| 598 ContentEntry* val = fNext.detach(); | 598 ContentEntry* val = fNext.release(); |
| 599 while (val != nullptr) { | 599 while (val != nullptr) { |
| 600 ContentEntry* valNext = val->fNext.detach(); | 600 ContentEntry* valNext = val->fNext.release(); |
| 601 // When the destructor is called, fNext is nullptr and exits. | 601 // When the destructor is called, fNext is nullptr and exits. |
| 602 delete val; | 602 delete val; |
| 603 val = valNext; | 603 val = valNext; |
| 604 } | 604 } |
| 605 } | 605 } |
| 606 }; | 606 }; |
| 607 | 607 |
| 608 // A helper class to automatically finish a ContentEntry at the end of a | 608 // A helper class to automatically finish a ContentEntry at the end of a |
| 609 // drawing method and maintain the state needed between set up and finish. | 609 // drawing method and maintain the state needed between set up and finish. |
| 610 class ScopedContentEntry { | 610 class ScopedContentEntry { |
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| 1844 if (lastContentEntry && xfermode != SkXfermode::kDstOver_Mode && | 1844 if (lastContentEntry && xfermode != SkXfermode::kDstOver_Mode && |
| 1845 entry->fState.compareInitialState(lastContentEntry->fState)) { | 1845 entry->fState.compareInitialState(lastContentEntry->fState)) { |
| 1846 return lastContentEntry; | 1846 return lastContentEntry; |
| 1847 } | 1847 } |
| 1848 | 1848 |
| 1849 SkAutoTDelete<ContentEntry>* contentEntries = getContentEntries(); | 1849 SkAutoTDelete<ContentEntry>* contentEntries = getContentEntries(); |
| 1850 if (!lastContentEntry) { | 1850 if (!lastContentEntry) { |
| 1851 contentEntries->reset(entry); | 1851 contentEntries->reset(entry); |
| 1852 setLastContentEntry(entry); | 1852 setLastContentEntry(entry); |
| 1853 } else if (xfermode == SkXfermode::kDstOver_Mode) { | 1853 } else if (xfermode == SkXfermode::kDstOver_Mode) { |
| 1854 entry->fNext.reset(contentEntries->detach()); | 1854 entry->fNext.reset(contentEntries->release()); |
| 1855 contentEntries->reset(entry); | 1855 contentEntries->reset(entry); |
| 1856 } else { | 1856 } else { |
| 1857 lastContentEntry->fNext.reset(entry); | 1857 lastContentEntry->fNext.reset(entry); |
| 1858 setLastContentEntry(entry); | 1858 setLastContentEntry(entry); |
| 1859 } | 1859 } |
| 1860 newEntry.release(); | 1860 newEntry.release(); |
| 1861 return entry; | 1861 return entry; |
| 1862 } | 1862 } |
| 1863 | 1863 |
| 1864 void SkPDFDevice::finishContentEntry(SkXfermode::Mode xfermode, | 1864 void SkPDFDevice::finishContentEntry(SkXfermode::Mode xfermode, |
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| 1878 return; | 1878 return; |
| 1879 } | 1879 } |
| 1880 if (xfermode == SkXfermode::kDstOver_Mode) { | 1880 if (xfermode == SkXfermode::kDstOver_Mode) { |
| 1881 SkASSERT(!dst); | 1881 SkASSERT(!dst); |
| 1882 ContentEntry* firstContentEntry = getContentEntries()->get(); | 1882 ContentEntry* firstContentEntry = getContentEntries()->get(); |
| 1883 if (firstContentEntry->fContent.getOffset() == 0) { | 1883 if (firstContentEntry->fContent.getOffset() == 0) { |
| 1884 // For DstOver, an empty content entry was inserted before the rest | 1884 // For DstOver, an empty content entry was inserted before the rest |
| 1885 // of the content entries. If nothing was drawn, it needs to be | 1885 // of the content entries. If nothing was drawn, it needs to be |
| 1886 // removed. | 1886 // removed. |
| 1887 SkAutoTDelete<ContentEntry>* contentEntries = getContentEntries(); | 1887 SkAutoTDelete<ContentEntry>* contentEntries = getContentEntries(); |
| 1888 contentEntries->reset(firstContentEntry->fNext.detach()); | 1888 contentEntries->reset(firstContentEntry->fNext.release()); |
| 1889 } | 1889 } |
| 1890 return; | 1890 return; |
| 1891 } | 1891 } |
| 1892 if (!dst) { | 1892 if (!dst) { |
| 1893 SkASSERT(xfermode == SkXfermode::kSrc_Mode || | 1893 SkASSERT(xfermode == SkXfermode::kSrc_Mode || |
| 1894 xfermode == SkXfermode::kSrcOut_Mode); | 1894 xfermode == SkXfermode::kSrcOut_Mode); |
| 1895 return; | 1895 return; |
| 1896 } | 1896 } |
| 1897 | 1897 |
| 1898 ContentEntry* contentEntries = getContentEntries()->get(); | 1898 ContentEntry* contentEntries = getContentEntries()->get(); |
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| 2329 pdfimage.reset(SkPDFCreateBitmapObject( | 2329 pdfimage.reset(SkPDFCreateBitmapObject( |
| 2330 image, fCanon->getPixelSerializer())); | 2330 image, fCanon->getPixelSerializer())); |
| 2331 if (!pdfimage) { | 2331 if (!pdfimage) { |
| 2332 return; | 2332 return; |
| 2333 } | 2333 } |
| 2334 fCanon->addPDFBitmap(image->uniqueID(), pdfimage.get()); | 2334 fCanon->addPDFBitmap(image->uniqueID(), pdfimage.get()); |
| 2335 } | 2335 } |
| 2336 SkPDFUtils::DrawFormXObject(this->addXObjectResource(pdfimage.get()), | 2336 SkPDFUtils::DrawFormXObject(this->addXObjectResource(pdfimage.get()), |
| 2337 &content.entry()->fContent); | 2337 &content.entry()->fContent); |
| 2338 } | 2338 } |
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