The Tor Browser / file comparison
comparison: gfx/skia/trunk/src/doc/SkDocument_PDF.cpp
gfx/skia/trunk/src/doc/SkDocument_PDF.cpp
- branch
- TOR_BUG_3246
- changeset 7
- 129ffea94266
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| -1:000000000000 | 0:7b4ed00d9d82 |
|---|---|
| 1 /* | |
| 2 * Copyright 2013 Google Inc. | |
| 3 * | |
| 4 * Use of this source code is governed by a BSD-style license that can be | |
| 5 * found in the LICENSE file. | |
| 6 */ | |
| 7 | |
| 8 #include "SkDocument.h" | |
| 9 #include "SkPDFDocument.h" | |
| 10 #include "SkPDFDeviceFlattener.h" | |
| 11 | |
| 12 class SkDocument_PDF : public SkDocument { | |
| 13 public: | |
| 14 SkDocument_PDF(SkWStream* stream, void (*doneProc)(SkWStream*,bool), | |
| 15 SkPicture::EncodeBitmap encoder, | |
| 16 SkScalar rasterDpi) | |
| 17 : SkDocument(stream, doneProc) | |
| 18 , fEncoder(encoder) | |
| 19 , fRasterDpi(rasterDpi) { | |
| 20 fDoc = SkNEW(SkPDFDocument); | |
| 21 fCanvas = NULL; | |
| 22 fDevice = NULL; | |
| 23 } | |
| 24 | |
| 25 virtual ~SkDocument_PDF() { | |
| 26 // subclasses must call close() in their destructors | |
| 27 this->close(); | |
| 28 } | |
| 29 | |
| 30 protected: | |
| 31 virtual SkCanvas* onBeginPage(SkScalar width, SkScalar height, | |
| 32 const SkRect& trimBox) SK_OVERRIDE { | |
| 33 SkASSERT(NULL == fCanvas); | |
| 34 SkASSERT(NULL == fDevice); | |
| 35 | |
| 36 SkSize mediaBoxSize; | |
| 37 mediaBoxSize.set(width, height); | |
| 38 | |
| 39 fDevice = SkNEW_ARGS(SkPDFDeviceFlattener, (mediaBoxSize, &trimBox)); | |
| 40 if (fEncoder) { | |
| 41 fDevice->setDCTEncoder(fEncoder); | |
| 42 } | |
| 43 if (fRasterDpi != 0) { | |
| 44 fDevice->setRasterDpi(fRasterDpi); | |
| 45 } | |
| 46 fCanvas = SkNEW_ARGS(SkCanvas, (fDevice)); | |
| 47 return fCanvas; | |
| 48 } | |
| 49 | |
| 50 virtual void onEndPage() SK_OVERRIDE { | |
| 51 SkASSERT(fCanvas); | |
| 52 SkASSERT(fDevice); | |
| 53 | |
| 54 fCanvas->flush(); | |
| 55 fDoc->appendPage(fDevice); | |
| 56 | |
| 57 fCanvas->unref(); | |
| 58 fDevice->unref(); | |
| 59 | |
| 60 fCanvas = NULL; | |
| 61 fDevice = NULL; | |
| 62 } | |
| 63 | |
| 64 virtual bool onClose(SkWStream* stream) SK_OVERRIDE { | |
| 65 SkASSERT(NULL == fCanvas); | |
| 66 SkASSERT(NULL == fDevice); | |
| 67 | |
| 68 bool success = fDoc->emitPDF(stream); | |
| 69 SkDELETE(fDoc); | |
| 70 fDoc = NULL; | |
| 71 return success; | |
| 72 } | |
| 73 | |
| 74 virtual void onAbort() SK_OVERRIDE { | |
| 75 SkDELETE(fDoc); | |
| 76 fDoc = NULL; | |
| 77 } | |
| 78 | |
| 79 private: | |
| 80 SkPDFDocument* fDoc; | |
| 81 SkPDFDeviceFlattener* fDevice; | |
| 82 SkCanvas* fCanvas; | |
| 83 SkPicture::EncodeBitmap fEncoder; | |
| 84 SkScalar fRasterDpi; | |
| 85 }; | |
| 86 | |
| 87 /////////////////////////////////////////////////////////////////////////////// | |
| 88 | |
| 89 SkDocument* SkDocument::CreatePDF(SkWStream* stream, void (*done)(SkWStream*,bool), | |
| 90 SkPicture::EncodeBitmap enc, | |
| 91 SkScalar dpi) { | |
| 92 return stream ? SkNEW_ARGS(SkDocument_PDF, (stream, done, enc, dpi)) : NULL; | |
| 93 } | |
| 94 | |
| 95 static void delete_wstream(SkWStream* stream, bool aborted) { | |
| 96 SkDELETE(stream); | |
| 97 } | |
| 98 | |
| 99 SkDocument* SkDocument::CreatePDF(const char path[], | |
| 100 SkPicture::EncodeBitmap enc, | |
| 101 SkScalar dpi) { | |
| 102 SkFILEWStream* stream = SkNEW_ARGS(SkFILEWStream, (path)); | |
| 103 if (!stream->isValid()) { | |
| 104 SkDELETE(stream); | |
| 105 return NULL; | |
| 106 } | |
| 107 return SkNEW_ARGS(SkDocument_PDF, (stream, delete_wstream, enc, dpi)); | |
| 108 } |
