PrintPreview: Printing preview of a PDF on Mac with Skia only previews the last page of the PDF

skia/ext/platform_device.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 "skia/ext/platform_device.h"
 
 #include "third_party/skia/include/core/SkMetaData.h"
 
 namespace skia {
 
 namespace {
+
 const char* kDevicePlatformBehaviour = "CrDevicePlatformBehaviour";
-}
+const char* kDraftModeKey = "CrDraftMode";
+
+#if defined(OS_MACOSX) || defined(OS_WIN)
+const char* kIsPreviewMetafileKey = "CrIsPreviewMetafile";
+#endif
+
+}  // namespace
 
 void SetPlatformDevice(SkDevice* device, PlatformDevice* platform_behaviour) {
   SkMetaData& meta_data = device->getMetaData();
   meta_data.setPtr(kDevicePlatformBehaviour, platform_behaviour);
 }
 
 PlatformDevice* GetPlatformDevice(SkDevice* device) {
   SkMetaData& meta_data = device->getMetaData();
   PlatformDevice* device_behaviour = NULL;
   if (meta_data.findPtr(kDevicePlatformBehaviour,
                         reinterpret_cast<void**>(&device_behaviour)))
     return device_behaviour;
 
   return NULL;
 }
 
+SkMetaData& getMetaData(SkCanvas* canvas) {
+  DCHECK(canvas != NULL);
+
+  SkDevice* device = canvas->getDevice();
+  DCHECK(device != NULL);
+  return device->getMetaData();
+}
+
+void SetDraftMode(SkCanvas* canvas, bool draft_mode) {

[vandebo (ex-Chrome), 2011/09/26 21:01:45]

You might as well make these generic and pull them into they anonymous
namespace, so you end up with:

SetDraftMode(canvas, mode) {
  SetBoolMetaData(canvas, kDraftModeKey, mode);
}

GetDrafrMode(canvas) {
  return GetBoolMetaData(canvas, kDraftModeKey);
}

etc.

[kmadhusu, 2011/09/27 00:35:14]

Done.

+  SkMetaData& meta = getMetaData(canvas);
+  meta.setBool(kDraftModeKey, draft_mode);
+}
+
+bool GetDraftMode(SkCanvas* canvas) {
+  SkMetaData& meta = getMetaData(canvas);
+  bool draft_mode;
+  if (!meta.findBool(kDraftModeKey, &draft_mode))
+    draft_mode = false;
+  return draft_mode;
+}
+
+#if defined(OS_MACOSX) || defined(OS_WIN)
+void SetIsPreviewMetafile(SkCanvas* canvas, bool is_preview) {
+  SkMetaData& meta = getMetaData(canvas);
+  meta.setBool(kIsPreviewMetafileKey, is_preview);
+}
+
+bool IsPreviewMetafile(SkCanvas* canvas) {
+  SkMetaData& meta = getMetaData(canvas);
+  bool is_preview_metafile;
+  if (!meta.findBool(kIsPreviewMetafileKey, &is_preview_metafile))
+    is_preview_metafile = false;
+  return is_preview_metafile;
+}
+#endif
+
 bool PlatformDevice::IsNativeFontRenderingAllowed() {
   return true;
 }
 
 bool PlatformDevice::AlphaBlendUsed() const {
   return false;
 }
 
 }  // namespace skia