chrome/browser/ui/libgtk2ui/gtk2_border.h

   1 // Copyright 2014 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_GTK2_BORDER_H_
   6 #define CHROME_BROWSER_UI_LIBGTK2UI_GTK2_BORDER_H_
   7
   8 #include "base/scoped_observer.h"
   9 #include "ui/gfx/image/image_skia.h"
  10 #include "ui/native_theme/native_theme.h"
  11 #include "ui/native_theme/native_theme_observer.h"
  12 #include "ui/views/border.h"
  13 #include "ui/views/controls/button/button.h"
  14
  15 namespace gfx {
  16 class Canvas;
  17 }
  18
  19 namespace views {
  20 class LabelButton;
  21 class Border;
  22 }
  23
  24 namespace libgtk2ui {
  25 class Gtk2UI;
  26
  27 // Draws a gtk button border, and manages the memory of the resulting pixbufs.
  28 class Gtk2Border : public views::Border, public ui::NativeThemeObserver {
  29  public:
  30   Gtk2Border(Gtk2UI* gtk2_ui,
  31              views::LabelButton* owning_button);
  32   virtual ~Gtk2Border();
  33
  34   // Overridden from views::Border:
  35   virtual void Paint(const views::View& view, gfx::Canvas* canvas) OVERRIDE;
  36   virtual gfx::Insets GetInsets() const OVERRIDE;
  37   virtual gfx::Size GetMinimumSize() const OVERRIDE;
  38
  39   // Overridden from views::NativeThemeChangeObserver:
  40   virtual void OnNativeThemeUpdated(ui::NativeTheme* observed_theme) OVERRIDE;
  41
  42  private:
  43   void PaintState(const ui::NativeTheme::State state,
  44                   const ui::NativeTheme::ExtraParams& extra,
  45                   const gfx::Rect& rect,
  46                   gfx::Canvas* canvas);
  47
  48   bool ShouldDrawBorder(bool focused, views::Button::ButtonState state);
  49
  50   Gtk2UI* gtk2_ui_;
  51
  52   gfx::ImageSkia button_images_[2][views::Button::STATE_COUNT];
  53
  54   // The view to which we are a border. We keep track of this so that we can
  55   // force invalidate the layout on theme changes.
  56   views::LabelButton* owning_button_;
  57
  58   ScopedObserver<ui::NativeTheme, ui::NativeThemeObserver> observer_manager_;
  59
  60   DISALLOW_COPY_AND_ASSIGN(Gtk2Border);
  61 };
  62
  63 }  // namespace libgtk2ui
  64
  65 #endif  // CHROME_BROWSER_UI_LIBGTK2UI_GTK2_BORDER_H_