printing/metafile_skia_wrapper.cc

   1 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 #include "printing/metafile_skia_wrapper.h"
   6 #include "skia/ext/platform_device.h"
   7 #include "skia/ext/refptr.h"
   8 #include "third_party/skia/include/core/SkCanvas.h"
   9 #include "third_party/skia/include/core/SkDevice.h"
  10 #include "third_party/skia/include/core/SkMetaData.h"
  11
  12 namespace printing {
  13
  14 namespace {
  15
  16 const char* kMetafileKey = "CrMetafile";
  17
  18 }  // namespace
  19
  20 // static
  21 void MetafileSkiaWrapper::SetMetafileOnCanvas(const SkCanvas& canvas,
  22                                               PdfMetafileSkia* metafile) {
  23   skia::RefPtr<MetafileSkiaWrapper> wrapper;
  24   if (metafile)
  25     wrapper = skia::AdoptRef(new MetafileSkiaWrapper(metafile));
  26
  27   SkMetaData& meta = skia::getMetaData(canvas);
  28   meta.setRefCnt(kMetafileKey, wrapper.get());
  29 }
  30
  31 // static
  32 PdfMetafileSkia* MetafileSkiaWrapper::GetMetafileFromCanvas(
  33     const SkCanvas& canvas) {
  34   SkMetaData& meta = skia::getMetaData(canvas);
  35   SkRefCnt* value;
  36   if (!meta.findRefCnt(kMetafileKey, &value) || !value)
  37     return NULL;
  38
  39   return static_cast<MetafileSkiaWrapper*>(value)->metafile_;
  40 }
  41
  42 MetafileSkiaWrapper::MetafileSkiaWrapper(PdfMetafileSkia* metafile)
  43     : metafile_(metafile) {
  44 }
  45
  46 }  // namespace printing