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      1 // Copyright (c) 2013 The Chromium Authors. All rights reserved.
      2 // Use of this source code is governed by a BSD-style license that can be
      3 // found in the LICENSE file.
      4 
      5 #ifndef CHROME_BROWSER_UI_LIBGTK2UI_NATIVE_THEME_GTK2_H_
      6 #define CHROME_BROWSER_UI_LIBGTK2UI_NATIVE_THEME_GTK2_H_
      7 
      8 #include "chrome/browser/ui/libgtk2ui/owned_widget_gtk2.h"
      9 #include "ui/native_theme/native_theme_base.h"
     10 
     11 typedef struct _GdkColor GdkColor;
     12 typedef struct _GtkStyle GtkStyle;
     13 typedef struct _GtkWidget GtkWidget;
     14 
     15 namespace libgtk2ui {
     16 
     17 // A version of NativeTheme that uses GTK2 supplied colours instead of the
     18 // default aura colours. Analogue to NativeThemeWin, except that can't be
     19 // compiled into the main chrome binary like the Windows code can.
     20 class NativeThemeGtk2 : public ui::NativeThemeBase {
     21  public:
     22   static NativeThemeGtk2* instance();
     23 
     24   // Overridden from ui::NativeThemeBase:
     25   virtual SkColor GetSystemColor(ColorId color_id) const OVERRIDE;
     26   virtual void PaintMenuPopupBackground(
     27       SkCanvas* canvas,
     28       const gfx::Size& size,
     29       const MenuBackgroundExtraParams& menu_background) const OVERRIDE;
     30   virtual void PaintMenuItemBackground(
     31       SkCanvas* canvas,
     32       State state,
     33       const gfx::Rect& rect,
     34       const MenuListExtraParams& menu_list) const OVERRIDE;
     35 
     36  private:
     37   NativeThemeGtk2();
     38   virtual ~NativeThemeGtk2();
     39 
     40   // Implementation of GetSystemColor.
     41   GdkColor GetSystemGdkColor(ColorId color_id) const;
     42 
     43   // Returns styles associated with various widget types.
     44   GtkWidget* GetRealizedWindow() const;
     45   GtkStyle* GetWindowStyle() const;
     46   GtkStyle* GetEntryStyle() const;
     47   GtkStyle* GetLabelStyle() const;
     48   GtkStyle* GetButtonStyle() const;
     49   GtkStyle* GetMenuStyle() const;
     50   GtkStyle* GetMenuItemStyle() const;
     51 
     52   mutable GtkWidget* fake_window_;
     53   mutable OwnedWidgetGtk fake_entry_;
     54   mutable OwnedWidgetGtk fake_label_;
     55   mutable OwnedWidgetGtk fake_button_;
     56 
     57   mutable OwnedWidgetGtk fake_menu_;
     58   mutable GtkWidget* fake_menu_item_;
     59 
     60   DISALLOW_COPY_AND_ASSIGN(NativeThemeGtk2);
     61 };
     62 
     63 }  // namespace libgtk2ui
     64 
     65 #endif  // CHROME_BROWSER_UI_LIBGTK2UI_NATIVE_THEME_GTK2_H_
     66