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 "SkTypes.h"
9 #if defined(SK_BUILD_FOR_WIN)
10
11 #include "SkXPSDocument.h"
12
13 #include "SkHRESULT.h"
14 #include "SkStream.h"
15 #include "SkTScopedComPtr.h"
16 #include "SkXPSDevice.h"
17
18 #include <XpsObjectModel.h>
19
20 namespace {
21 struct SkXPSDocument final : public SkDocument {
22 SkTScopedComPtr<IXpsOMObjectFactory> fXpsFactory;
23 SkXPSDevice fDevice;
24 std::unique_ptr<SkCanvas> fCanvas;
25 SkVector fUnitsPerMeter;
26 SkVector fPixelsPerMeter;
27
28 SkXPSDocument(SkWStream*, SkScalar dpi, SkTScopedComPtr<IXpsOMObjectFactory>);
29 ~SkXPSDocument() override;
30 SkCanvas* onBeginPage(SkScalar w, SkScalar h) override;
31 void onEndPage() override;
32 void onClose(SkWStream*) override;
33 void onAbort() override;
34 };
35 }
36
SkXPSDocument(SkWStream * stream,SkScalar dpi,SkTScopedComPtr<IXpsOMObjectFactory> xpsFactory)37 SkXPSDocument::SkXPSDocument(SkWStream* stream,
38 SkScalar dpi,
39 SkTScopedComPtr<IXpsOMObjectFactory> xpsFactory)
40 : SkDocument(stream)
41 , fXpsFactory(std::move(xpsFactory))
42 , fDevice(SkISize{10000, 10000})
43 {
44 const SkScalar kPointsPerMeter = SkDoubleToScalar(360000.0 / 127.0);
45 fUnitsPerMeter.set(kPointsPerMeter, kPointsPerMeter);
46 SkScalar pixelsPerMeterScale = SkDoubleToScalar(dpi * 5000.0 / 127.0);
47 fPixelsPerMeter.set(pixelsPerMeterScale, pixelsPerMeterScale);
48 SkASSERT(fXpsFactory);
49 fDevice.beginPortfolio(stream, fXpsFactory.get());
50 }
51
~SkXPSDocument()52 SkXPSDocument::~SkXPSDocument() {
53 // subclasses must call close() in their destructors
54 this->close();
55 }
56
onBeginPage(SkScalar width,SkScalar height)57 SkCanvas* SkXPSDocument::onBeginPage(SkScalar width, SkScalar height) {
58 fDevice.beginSheet(fUnitsPerMeter, fPixelsPerMeter, {width, height});
59 fCanvas.reset(new SkCanvas(sk_ref_sp(&fDevice)));
60 return fCanvas.get();
61 }
62
onEndPage()63 void SkXPSDocument::onEndPage() {
64 SkASSERT(fCanvas.get());
65 fCanvas->flush();
66 fCanvas.reset(nullptr);
67 fDevice.endSheet();
68 }
69
onClose(SkWStream *)70 void SkXPSDocument::onClose(SkWStream*) {
71 SkASSERT(!fCanvas.get());
72 (void)fDevice.endPortfolio();
73 }
74
onAbort()75 void SkXPSDocument::onAbort() {}
76
77 ///////////////////////////////////////////////////////////////////////////////
78
MakeDocument(SkWStream * stream,IXpsOMObjectFactory * factoryPtr,SkScalar dpi)79 sk_sp<SkDocument> SkXPS::MakeDocument(SkWStream* stream,
80 IXpsOMObjectFactory* factoryPtr,
81 SkScalar dpi) {
82 SkTScopedComPtr<IXpsOMObjectFactory> factory(SkSafeRefComPtr(factoryPtr));
83 return stream && factory
84 ? sk_make_sp<SkXPSDocument>(stream, dpi, std::move(factory))
85 : nullptr;
86 }
87 #endif // defined(SK_BUILD_FOR_WIN)
88