Makes ImageSkia more like SkBitmap

ui/base/resource/resource_bundle.cc

 // Copyright (c) 2012 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 "ui/base/resource/resource_bundle.h"
 
 #include <vector>
 
 #include "base/command_line.h"
 #include "base/file_util.h"
 #include "base/logging.h"
 #include "base/memory/ref_counted_memory.h"
 #include "base/metrics/histogram.h"
 #include "base/path_service.h"
 #include "base/stl_util.h"
 #include "base/string_piece.h"
 #include "base/synchronization/lock.h"
 #include "base/utf_string_conversions.h"
 #include "build/build_config.h"
 #include "third_party/skia/include/core/SkBitmap.h"
 #include "ui/base/l10n/l10n_util.h"
 #include "ui/base/resource/data_pack.h"
 #include "ui/base/ui_base_paths.h"
 #include "ui/base/ui_base_switches.h"
 #include "ui/gfx/codec/jpeg_codec.h"
 #include "ui/gfx/codec/png_codec.h"
 #include "ui/gfx/font.h"
 #include "ui/gfx/image/image.h"
+#include "ui/gfx/image/image_skia.h"
 
 namespace ui {
 
 namespace {
 
 // Font sizes relative to base font.
 #if defined(OS_CHROMEOS) && defined(CROS_FONTS_USING_BCI)
 const int kSmallFontSizeDelta = -3;
 const int kMediumFontSizeDelta = 2;
 const int kLargeFontSizeDelta = 7;
@@ skipping 195 matching lines @@
 gfx::Image& ResourceBundle::GetImageNamed(int resource_id) {
   // Check to see if the image is already in the cache.
   {
     base::AutoLock lock_scope(*images_and_fonts_lock_);
     ImageMap::const_iterator found = images_.find(resource_id);
     if (found != images_.end())
       return *found->second;
   }
 
   DCHECK(!data_packs_.empty()) << "Missing call to SetResourcesDataDLL?";
-  ScopedVector<const SkBitmap> bitmaps;
+  gfx::ImageSkia image_skia;
   for (size_t i = 0; i < data_packs_.size(); ++i) {
-    SkBitmap* bitmap = LoadBitmap(*data_packs_[i], resource_id);
-    if (bitmap)
-      bitmaps.push_back(bitmap);
+    // TODO(pkotwicz): Convert LoadBitmap to return reference instead of
+    // pointer.
+    scoped_ptr<SkBitmap> bitmap(LoadBitmap(*data_packs_[i], resource_id));
+    if (bitmap.get()) {
+      // ImageSkia adds a reference to bitmap.
+#if defined(ENABLE_DIP)
+      image_skia.AddBitmapForScale(*bitmap, data_packs_[i]->GetScaleFactor());
+#else
+      image_skia.AddBitmapForScale(*bitmap, 1.0f);
+#endif
+    }
   }
 
-  if (bitmaps.empty()) {
+  if (image_skia.empty()) {
     LOG(WARNING) << "Unable to load image with id " << resource_id;
     NOTREACHED();  // Want to assert in debug mode.
     // The load failed to retrieve the image; show a debugging red square.
     return *GetEmptyImage();
   }
 
   // The load was successful, so cache the image.
   base::AutoLock lock_scope(*images_and_fonts_lock_);
 
   // Another thread raced the load and has already cached the image.
   if (images_.count(resource_id))
     return *images_[resource_id];
 
-  std::vector<const SkBitmap*> tmp_bitmaps;
-  bitmaps.release(&tmp_bitmaps);
-  // Takes ownership of bitmaps.
-  gfx::Image* image = new gfx::Image(tmp_bitmaps);
+  gfx::Image* image = new gfx::Image(image_skia);
   images_[resource_id] = image;
   return *image;
 }
 
 gfx::Image& ResourceBundle::GetNativeImageNamed(int resource_id) {
   return GetNativeImageNamed(resource_id, RTL_DISABLED);
 }
 
 base::RefCountedStaticMemory* ResourceBundle::LoadDataResourceBytes(
     int resource_id) const {
@@ skipping 127 matching lines @@
     SkBitmap* bitmap = new SkBitmap();
     bitmap->setConfig(SkBitmap::kARGB_8888_Config, 32, 32);
     bitmap->allocPixels();
     bitmap->eraseARGB(255, 255, 0, 0);
     empty_image = new gfx::Image(bitmap);
   }
   return empty_image;
 }
 
 }  // namespace ui