src/xps/SkXPSDocument.cpp

   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
   9 #include "SkTypes.h"
  10 #if defined(SK_BUILD_FOR_WIN32)
  11
  12 #include "SkXPSDocument.h"
  13 #include "SkStream.h"
  14 #include "SkHRESULT.h"
  15
  16 SkXPSDocument::SkXPSDocument(SkWStream* stream,
  17                    SkScalar dpi,
  18                    SkTScopedComPtr<IXpsOMObjectFactory> xpsFactory)
  19         : SkDocument(stream, nullptr)
  20         , fXpsFactory(std::move(xpsFactory))
  21         , fDevice(SkISize{10000, 10000})
  22 {
  23     const SkScalar kPointsPerMeter = SkDoubleToScalar(360000.0 / 127.0);
  24     fUnitsPerMeter.set(kPointsPerMeter, kPointsPerMeter);
  25     SkScalar pixelsPerMeterScale = SkDoubleToScalar(dpi * 5000.0 / 127.0);
  26     fPixelsPerMeter.set(pixelsPerMeterScale, pixelsPerMeterScale);
  27     SkASSERT(fXpsFactory);
  28     fDevice.beginPortfolio(stream, fXpsFactory.get());
  29 }
  30
  31 SkXPSDocument::~SkXPSDocument() {
  32     // subclasses must call close() in their destructors
  33     this->close();
  34 }
  35
  36 SkCanvas* SkXPSDocument::onBeginPage(SkScalar width,
  37                                      SkScalar height,
  38                                      const SkRect& trimBox) {
  39     fDevice.beginSheet(fUnitsPerMeter, fPixelsPerMeter,
  40                        SkSize::Make(width, height));
  41     fCanvas.reset(new SkCanvas(&fDevice));
  42     fCanvas->clipRect(trimBox);
  43     fCanvas->translate(trimBox.x(), trimBox.y());
  44     return fCanvas.get();
  45 }
  46
  47 void SkXPSDocument::onEndPage() {
  48     SkASSERT(fCanvas.get());
  49     fCanvas->flush();
  50     fCanvas.reset(nullptr);
  51     fDevice.endSheet();
  52 }
  53
  54 void SkXPSDocument::onClose(SkWStream*) {
  55     SkASSERT(!fCanvas.get());
  56     (void)fDevice.endPortfolio();
  57 }
  58
  59 void SkXPSDocument::onAbort() {}
  60
  61 ///////////////////////////////////////////////////////////////////////////////
  62
  63 sk_sp<SkDocument> SkDocument::MakeXPS(SkWStream* stream,
  64                                       SkScalar dpi) {
  65     SkTScopedComPtr<IXpsOMObjectFactory> factory;
  66     auto hr = CoCreateInstance(
  67         CLSID_XpsOMObjectFactory,
  68         nullptr,
  69         CLSCTX_INPROC_SERVER,
  70         IID_PPV_ARGS(&factory));
  71     if (!SUCCEEDED(hr)) {
  72         return nullptr;
  73     }
  74     return SkDocument::MakeXPS (stream, factory, dpi);
  75 }
  76
  77 sk_sp<SkDocument> SkDocument::MakeXPS(SkWStream* stream,
  78                                       IXpsOMObjectFactory* factoryPtr,
  79                                       SkScalar dpi) {
  80     SkTScopedComPtr<IXpsOMObjectFactory> factory(SkSafeRefComPtr(factoryPtr));
  81     return stream && factory
  82            ? sk_make_sp<SkXPSDocument>(stream, dpi, std::move(factory))
  83            : nullptr;
  84 }
  85
  86 #endif//defined(SK_BUILD_FOR_WIN32)