Upstream version 7.36.149.0
[platform/framework/web/crosswalk.git] / src / 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_