Connect the right metafiles for print preview on Linux and Windows.

printing/native_metafile_skia_wrapper.cc

-// Copyright (c) 2011 The Chromium Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style license that can be
-// found in the LICENSE file.
-
-#include "base/logging.h"
-#include "printing/native_metafile_skia_wrapper.h"
-#include "third_party/skia/include/core/SkCanvas.h"
-#include "third_party/skia/include/core/SkDevice.h"
-#include "third_party/skia/include/core/SkMetaData.h"
-
-namespace printing {
-
-namespace {
-
-static const char* kNativeMetafileKey = "CrNativeMetafile";
-
-SkMetaData& getMetaData(SkCanvas* canvas) {
-  DCHECK(canvas != NULL);
-
-  SkDevice* device = canvas->getDevice();
-  DCHECK(device != NULL);
-  return device->getMetaData();
-}
-
-}  // namespace
-
-
-// static
-void NativeMetafileSkiaWrapper::SetMetafileOnCanvas(SkCanvas* canvas,
-                                                    NativeMetafile* metafile) {
-  NativeMetafileSkiaWrapper* wrapper = NULL;
-  if (metafile)
-    wrapper = new NativeMetafileSkiaWrapper(metafile);
-
-  SkMetaData& meta = getMetaData(canvas);
-  meta.setRefCnt(kNativeMetafileKey, wrapper);
-  SkSafeUnref(wrapper);
-}
-
-// static
-NativeMetafile* NativeMetafileSkiaWrapper::GetMetafileFromCanvas(
-    SkCanvas* canvas) {
-  SkMetaData& meta = getMetaData(canvas);
-  SkRefCnt* value;
-  if (!meta.findRefCnt(kNativeMetafileKey, &value) || !value)
-    return NULL;
-
-  return static_cast<NativeMetafileSkiaWrapper*>(value)->metafile_;
-}
-
-NativeMetafileSkiaWrapper::NativeMetafileSkiaWrapper(NativeMetafile* metafile)
-    : metafile_(metafile) {
-}
-
-}  // namespace printing