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| 1 /* |
| 2 * Copyright 2014 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 "DMPDFTask.h" |
| 9 #include "DMPDFRasterizeTask.h" |
| 10 #include "DMUtil.h" |
| 11 #include "DMWriteTask.h" |
| 12 #include "SkCommandLineFlags.h" |
| 13 #include "SkDocument.h" |
| 14 |
| 15 // The PDF backend is not threadsafe. If you run dm with --pdf repeatedly, you |
| 16 // will quickly find yourself crashed. (while catchsegv out/Release/dm;; end). |
| 17 // |
| 18 // TODO(mtklein): re-enable by default, maybe moving to its own single thread. |
| 19 DEFINE_bool(pdf, false, "PDF backend master switch."); |
| 20 |
| 21 namespace DM { |
| 22 |
| 23 PDFTask::PDFTask(const char* config, |
| 24 Reporter* reporter, |
| 25 TaskRunner* taskRunner, |
| 26 skiagm::GMRegistry::Factory factory, |
| 27 RasterizePdfProc rasterizePdfProc) |
| 28 : CpuTask(reporter, taskRunner) |
| 29 , fGM(factory(NULL)) |
| 30 , fName(UnderJoin(fGM->getName(), config)) |
| 31 , fRasterize(rasterizePdfProc) {} |
| 32 |
| 33 PDFTask::PDFTask(Reporter* reporter, |
| 34 TaskRunner* taskRunner, |
| 35 const SkPicture* picture, |
| 36 SkString filename, |
| 37 RasterizePdfProc rasterizePdfProc) |
| 38 : CpuTask(reporter, taskRunner) |
| 39 , fPicture(SkRef(picture)) |
| 40 , fName(UnderJoin(FileToTaskName(filename).c_str(), "pdf")) |
| 41 , fRasterize(rasterizePdfProc) {} |
| 42 |
| 43 namespace { |
| 44 |
| 45 class SinglePagePDF { |
| 46 public: |
| 47 SinglePagePDF(SkScalar width, SkScalar height) |
| 48 : fDocument(SkDocument::CreatePDF(&fWriteStream)) |
| 49 , fCanvas(fDocument->beginPage(width, height)) {} |
| 50 |
| 51 SkCanvas* canvas() { return fCanvas; } |
| 52 |
| 53 SkStreamAsset* end() { |
| 54 fCanvas->flush(); |
| 55 fDocument->endPage(); |
| 56 fDocument->close(); |
| 57 return fWriteStream.detachAsStream(); |
| 58 } |
| 59 |
| 60 private: |
| 61 SkDynamicMemoryWStream fWriteStream; |
| 62 SkAutoTUnref<SkDocument> fDocument; |
| 63 SkCanvas* fCanvas; |
| 64 }; |
| 65 |
| 66 } // namespace |
| 67 |
| 68 void PDFTask::draw() { |
| 69 SkAutoTDelete<SkStreamAsset> pdfData; |
| 70 bool rasterize = true; |
| 71 if (fGM.get()) { |
| 72 rasterize = 0 == (fGM->getFlags() & skiagm::GM::kSkipPDFRasterization_Fl
ag); |
| 73 SinglePagePDF pdf(fGM->width(), fGM->height()); |
| 74 CanvasPreflight(pdf.canvas()); |
| 75 //TODO(mtklein): GM doesn't do this. Why not? |
| 76 //pdf.canvas()->concat(fGM->getInitialTransform()); |
| 77 fGM->draw(pdf.canvas()); |
| 78 pdfData.reset(pdf.end()); |
| 79 } else { |
| 80 SinglePagePDF pdf(fPicture->cullRect().width(), fPicture->cullRect().hei
ght()); |
| 81 CanvasPreflight(pdf.canvas()); |
| 82 fPicture->playback(pdf.canvas()); |
| 83 pdfData.reset(pdf.end()); |
| 84 } |
| 85 |
| 86 SkASSERT(pdfData.get()); |
| 87 if (rasterize) { |
| 88 this->spawnChild(SkNEW_ARGS(PDFRasterizeTask, |
| 89 (*this, pdfData->duplicate(), fRasterize))); |
| 90 } |
| 91 const char* sourceType = fGM.get() ? "GM" : "SKP"; |
| 92 this->spawnChild(SkNEW_ARGS(WriteTask, |
| 93 (*this, sourceType, pdfData->duplicate(), ".pdf"
))); |
| 94 } |
| 95 |
| 96 bool PDFTask::shouldSkip() const { |
| 97 if (!FLAGS_pdf) { |
| 98 return true; |
| 99 } |
| 100 if (fGM.get() && 0 != (fGM->getFlags() & skiagm::GM::kSkipPDF_Flag)) { |
| 101 return true; |
| 102 } |
| 103 return false; |
| 104 } |
| 105 |
| 106 } // namespace DM |
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