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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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