Aura: New window shadows, desktop background debug toggle

ash/wm/image_grid.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 ASH_WM_IMAGE_GRID_H_
 #define ASH_WM_IMAGE_GRID_H_
 #pragma once
 
 #include "base/basictypes.h"
 #include "base/gtest_prod_util.h"
@@ skipping 91 matching lines @@
 
   ImageGrid();
   ~ImageGrid();
 
   ui::Layer* layer() { return layer_.get(); }
   int top_image_height() const { return top_image_height_; }
   int bottom_image_height() const { return bottom_image_height_; }
   int left_image_width() const { return left_image_width_; }
   int right_image_width() const { return right_image_width_; }
 
-  // Initializes the grid to display the passed-in images (any of which can be
-  // NULL).  Ownership of the images remains with the caller.
-  void Init(const gfx::Image* top_left_image,
-            const gfx::Image* top_image,
-            const gfx::Image* top_right_image,
-            const gfx::Image* left_image,
-            const gfx::Image* center_image,
-            const gfx::Image* right_image,
-            const gfx::Image* bottom_left_image,
-            const gfx::Image* bottom_image,
-            const gfx::Image* bottom_right_image);
+  // Sets the grid to display the passed-in images (any of which can be NULL).
+  // Ownership of the images remains with the caller.  May be called more than
+  // once to switch images.
+  void SetImages(const gfx::Image* top_left_image,
+                 const gfx::Image* top_image,
+                 const gfx::Image* top_right_image,
+                 const gfx::Image* left_image,
+                 const gfx::Image* center_image,
+                 const gfx::Image* right_image,
+                 const gfx::Image* bottom_left_image,
+                 const gfx::Image* bottom_image,
+                 const gfx::Image* bottom_right_image);
 
   void SetSize(const gfx::Size& size);
 
  private:
   // Delegate responsible for painting a specific image on a layer.
   class ImagePainter : public ui::LayerDelegate {
    public:
     ImagePainter(const gfx::Image* image) : image_(image) {}
     virtual ~ImagePainter() {}
 
@@ skipping 13 matching lines @@
 
     DISALLOW_COPY_AND_ASSIGN(ImagePainter);
   };
 
   // Returns the dimensions of |image| if non-NULL or gfx::Size(0, 0) otherwise.
   static gfx::Size GetImageSize(const gfx::Image* image);
 
   // Returns true if |layer|'s bounds don't fit within |size|.
   static bool LayerExceedsSize(const ui::Layer* layer, const gfx::Size& size);
 
-  // Initializes |layer_ptr| and |painter_ptr| to display |image|.
-  // Also adds the passed-in layer to |layer_|.
-  void InitImage(const gfx::Image* image,
-                 scoped_ptr<ui::Layer>* layer_ptr,
-                 scoped_ptr<ImagePainter>* painter_ptr);
+  // Sets |layer_ptr| and |painter_ptr| to display |image| and adds the
+  // passed-in layer to |layer_|.  If image is NULL resets |layer_ptr| and
+  // |painter_ptr| and removes any existing layer from |layer_|.
+  void SetImage(const gfx::Image* image,
+                scoped_ptr<ui::Layer>* layer_ptr,
+                scoped_ptr<ImagePainter>* painter_ptr);
 
   // Layer that contains all of the image layers.
   scoped_ptr<ui::Layer> layer_;
 
   // The grid's dimensions.
   gfx::Size size_;
 
   // Heights and widths of the images displayed by |top_layer_|,
   // |bottom_layer_|, |left_layer_|, and |right_layer_|.
   int top_image_height_;
@@ skipping 32 matching lines @@
   scoped_ptr<ImagePainter> bottom_painter_;
   scoped_ptr<ImagePainter> bottom_right_painter_;
 
   DISALLOW_COPY_AND_ASSIGN(ImageGrid);
 };
 
 }  // namespace internal
 }  // namespace ash
 
 #endif  // ASH_WM_IMAGE_GRID_H_