[Toolbar] Base toolbar button class with background images for button states

ui/views/controls/button/label_button.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_VIEWS_CONTROLS_BUTTON_LABEL_BUTTON_H_
 #define UI_VIEWS_CONTROLS_BUTTON_LABEL_BUTTON_H_
 
 #include "base/compiler_specific.h"
 #include "third_party/skia/include/core/SkColor.h"
 #include "ui/gfx/font.h"
@@ skipping 47 matching lines @@
   void set_max_size(const gfx::Size& max_size) { max_size_ = max_size; }
 
   // Get or set the option to handle the return key; false by default.
   bool is_default() const { return is_default_; }
   void SetIsDefault(bool is_default);
 
   // Get or set the button's overall style; the default is |STYLE_TEXTBUTTON|.
   ButtonStyle style() const { return style_; }
   void SetStyle(ButtonStyle style);
 
-  // Overridden from View:
+  // View:
   virtual gfx::Size GetPreferredSize() OVERRIDE;
   virtual void Layout() OVERRIDE;
   virtual const char* GetClassName() const OVERRIDE;
 
  protected:
+   ImageView* image() const { return image_; }
    Label* label() const { return label_; }
 
   // Fill |params| with information about the button.
   virtual void GetExtraParams(ui::NativeTheme::ExtraParams* params) const;
 
   // Resets colors from the NativeTheme, explicitly set colors are unchanged.
   virtual void ResetColorsFromNativeTheme();
 
   // Updates the image view to contain the appropriate button state image.
   void UpdateImage();
 
+  // NativeThemeDelegate:
+  virtual gfx::Rect GetThemePaintRect() const OVERRIDE;
+
  private:
   FRIEND_TEST_ALL_PREFIXES(LabelButtonTest, Init);
   FRIEND_TEST_ALL_PREFIXES(LabelButtonTest, Label);
   FRIEND_TEST_ALL_PREFIXES(LabelButtonTest, Image);
   FRIEND_TEST_ALL_PREFIXES(LabelButtonTest, LabelAndImage);
   FRIEND_TEST_ALL_PREFIXES(LabelButtonTest, Font);
 
-  // Overridden from CustomButton:
+  // CustomButton:
   virtual void StateChanged() OVERRIDE;
 
-  // Overridden from View:
+  // View:
   virtual void ChildPreferredSizeChanged(View* child) OVERRIDE;
   virtual void OnNativeThemeChanged(const ui::NativeTheme* theme) OVERRIDE;
 
-  // Overridden from NativeThemeDelegate:
+  // NativeThemeDelegate:
   virtual ui::NativeTheme::Part GetThemePart() const OVERRIDE;
-  virtual gfx::Rect GetThemePaintRect() const OVERRIDE;
   virtual ui::NativeTheme::State GetThemeState(
       ui::NativeTheme::ExtraParams* params) const OVERRIDE;
   virtual const gfx::Animation* GetThemeAnimation() const OVERRIDE;
   virtual ui::NativeTheme::State GetBackgroundThemeState(
       ui::NativeTheme::ExtraParams* params) const OVERRIDE;
   virtual ui::NativeTheme::State GetForegroundThemeState(
       ui::NativeTheme::ExtraParams* params) const OVERRIDE;
 
   // The image and label shown in the button.
   ImageView* image_;
@@ skipping 18 matching lines @@
 
   // The button's overall style.
   ButtonStyle style_;
 
   DISALLOW_COPY_AND_ASSIGN(LabelButton);
 };
 
 }  // namespace views
 
 #endif  // UI_VIEWS_CONTROLS_BUTTON_LABEL_BUTTON_H_