chromeos: Fix pixelated icons in app list and launcher (part 1)

ui/gfx/image/image_skia.h

 // 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.
 
 #ifndef UI_GFX_IMAGE_IMAGE_SKIA_H_
 #define UI_GFX_IMAGE_IMAGE_SKIA_H_
 #pragma once
 
 #include <vector>
 
 #include "base/basictypes.h"
 #include "base/memory/ref_counted.h"
 #include "ui/base/ui_export.h"
 #include "ui/gfx/image/image_skia_rep.h"
+#include "ui/gfx/shadow_value.h"
 
 namespace gfx {
 
+class Size;
+
 namespace internal {
 class ImageSkiaStorage;
 }  // namespace internal
 
 // Container for the same image at different densities, similar to NSImage.
 // Image height and width are in DIP (Device Indepent Pixel) coordinates.
 //
 // ImageSkia should be used whenever possible instead of SkBitmap.
 // Functions that mutate the image should operate on the gfx::ImageSkiaRep
 // returned from ImageSkia::GetRepresentation, not on ImageSkia.
@@ skipping 65 matching lines @@
   bool isNull() const { return storage_ == NULL; }
 
   // Width and height of image in DIP coordinate system.
   int width() const;
   int height() const;
 
   // Wrapper function for SkBitmap::extractBitmap.
   // Operates on each stored image rep.
   bool extractSubset(ImageSkia* dst, const SkIRect& subset) const;
 
+  // Returns a resized image by running skia::ImageOperations::Resize on
+  // all representations.
+  ImageSkia Resize(const gfx::Size& size) const;
+
+  // Returns an image with drop shadows added for all representations.
+  ImageSkia CreateDropShadow(const gfx::ShadowValues& shadows) const;

[oshima, 2012/07/03 03:47:26]

Can you use new interface gfx::ImageSkiaSource
(https://chromiumcodereview.appspot.com/10694045) to resize / create drop shadow
instead of adding new methods here?

If you're unsure about how to do it, please feel free to ping me. I can explain
how.

[xiyuan, 2012/07/03 22:16:00]

Done.

+
   // Returns pointer to an SkBitmap contained by this object.
   // TODO(pkotwicz): This is temporary till conversion to gfx::ImageSkia is
   // done.
   const SkBitmap* bitmap() const;
 
   // Returns a vector with the image reps contained in this object.
   std::vector<gfx::ImageSkiaRep> image_reps() const;
 
  private:
   // Initialize ImageSkiaStorage with passed in parameters.
   // If the image rep's bitmap is empty, ImageStorage is set to NULL.
   void Init(const gfx::ImageSkiaRep& image_rep);
 
   // A null image rep to return as not to return a temporary.
   static gfx::ImageSkiaRep& NullImageRep();
 
   // Returns the iterator of the image rep whose density best matches
   // |scale_factor|.
   // ImageSkiaStorage cannot be NULL when this function is called.
   ImageSkiaReps::iterator FindRepresentation(
       ui::ScaleFactor scale_factor) const;
 
   // A refptr so that ImageRepSkia can be copied cheaply.
   scoped_refptr<internal::ImageSkiaStorage> storage_;
 };
 
 }  // namespace gfx
 
 #endif  // UI_GFX_IMAGE_IMAGE_SKIA_H_