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| 1 /* |
| 2 * Copyright 2015 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 "SkXPSDevice.h" |
| 10 #include "SkStream.h" |
| 11 |
| 12 class SkDocument_XPS : public SkDocument { |
| 13 public: |
| 14 SkDocument_XPS(SkWStream* stream, |
| 15 void (*doneProc)(SkWStream*, bool), |
| 16 SkScalar dpi) |
| 17 : SkDocument(stream, doneProc) { |
| 18 const SkScalar kPointsPerMeter = SkDoubleToScalar(360000.0 / 127.0); |
| 19 fUnitsPerMeter.set(kPointsPerMeter, kPointsPerMeter); |
| 20 SkScalar pixelsPerMeterScale = SkDoubleToScalar(dpi * 5000.0 / 127.0); |
| 21 fPixelsPerMeter.set(pixelsPerMeterScale, pixelsPerMeterScale); |
| 22 fDevice.beginPortfolio(stream); |
| 23 } |
| 24 |
| 25 virtual ~SkDocument_XPS() { |
| 26 // subclasses must call close() in their destructors |
| 27 this->close(); |
| 28 } |
| 29 |
| 30 protected: |
| 31 virtual SkCanvas* onBeginPage(SkScalar width, |
| 32 SkScalar height, |
| 33 const SkRect& trimBox) SK_OVERRIDE { |
| 34 fDevice.beginSheet(fUnitsPerMeter, fPixelsPerMeter, |
| 35 SkSize::Make(width, height)); |
| 36 fCanvas.reset(SkNEW_ARGS(SkCanvas, (&fDevice))); |
| 37 fCanvas->clipRect(trimBox); |
| 38 fCanvas->translate(trimBox.x(), trimBox.y()); |
| 39 return fCanvas.get(); |
| 40 } |
| 41 |
| 42 void onEndPage() SK_OVERRIDE { |
| 43 SkASSERT(fCanvas.get()); |
| 44 fCanvas->flush(); |
| 45 fCanvas.reset(NULL); |
| 46 fDevice.endSheet(); |
| 47 } |
| 48 |
| 49 bool onClose(SkWStream*) SK_OVERRIDE { |
| 50 SkASSERT(!fCanvas.get()); |
| 51 return fDevice.endPortfolio(); |
| 52 } |
| 53 |
| 54 void onAbort() SK_OVERRIDE {} |
| 55 |
| 56 private: |
| 57 SkXPSDevice fDevice; |
| 58 SkAutoTUnref<SkCanvas> fCanvas; |
| 59 SkVector fUnitsPerMeter; |
| 60 SkVector fPixelsPerMeter; |
| 61 }; |
| 62 |
| 63 /////////////////////////////////////////////////////////////////////////////// |
| 64 |
| 65 SkDocument* SkDocument::CreateXPS(SkWStream* stream, SkScalar dpi) { |
| 66 return stream ? SkNEW_ARGS(SkDocument_XPS, (stream, NULL, dpi)) : NULL; |
| 67 } |
| 68 |
| 69 static void delete_wstream(SkWStream* stream, bool aborted) { |
| 70 SkDELETE(stream); |
| 71 } |
| 72 |
| 73 SkDocument* SkDocument::CreateXPS(const char path[], SkScalar dpi) { |
| 74 SkAutoTDelete<SkFILEWStream> stream(SkNEW_ARGS(SkFILEWStream, (path))); |
| 75 if (!stream->isValid()) { |
| 76 return NULL; |
| 77 } |
| 78 return SkNEW_ARGS(SkDocument_XPS, (stream.detach(), delete_wstream, dpi)); |
| 79 } |
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