gtk2_border.h revision a1401311d1ab56c4ed0a474bd38c108f75cb0cd9 
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 "ui/gfx/image/image_skia.h"
9#include "ui/native_theme/native_theme.h"
10#include "ui/views/border.h"
11#include "ui/views/controls/button/button.h"
12#include "ui/views/linux_ui/native_theme_change_observer.h"
13
14namespace gfx {
15class Canvas;
16}
17
18namespace views {
19class LabelButton;
20class Border;
21}
22
23namespace libgtk2ui {
24class Gtk2UI;
25
26// Draws a gtk button border, and manages the memory of the resulting pixbufs.
27class Gtk2Border : public views::Border,
28                   public views::NativeThemeChangeObserver {
29 public:
30  Gtk2Border(Gtk2UI* gtk2_ui,
31             views::LabelButton* owning_button,
32             scoped_ptr<views::Border> border);
33  virtual ~Gtk2Border();
34
35  // Overridden from views::Border:
36  virtual void Paint(const views::View& view, gfx::Canvas* canvas) OVERRIDE;
37  virtual gfx::Insets GetInsets() const OVERRIDE;
38  virtual gfx::Size GetMinimumSize() const OVERRIDE;
39
40  // Overridden from views::NativeThemeChangeObserver:
41  virtual void OnNativeThemeChanged() OVERRIDE;
42
43 private:
44  void PaintState(const ui::NativeTheme::State state,
45                  const ui::NativeTheme::ExtraParams& extra,
46                  const gfx::Rect& rect,
47                  gfx::Canvas* canvas);
48
49  bool ShouldDrawBorder(bool focused, views::Button::ButtonState state);
50
51  Gtk2UI* gtk2_ui_;
52
53  gfx::ImageSkia button_images_[2][views::Button::STATE_COUNT];
54
55  // The view to which we are a border. We keep track of this so that we can
56  // force invalidate the layout on theme changes.
57  views::LabelButton* owning_button_;
58
59  // Since we don't want to expose the concept of whether we're using a GTK
60  // theme down to the cross platform views layer, we keep a normal Border and
61  // delegate to it whenever we aren't in GTK theme mode.
62  scoped_ptr<views::Border> border_;
63
64  DISALLOW_COPY_AND_ASSIGN(Gtk2Border);
65};
66
67}  // namespace libgtk2ui
68
69#endif  // CHROME_BROWSER_UI_LIBGTK2UI_GTK2_BORDER_H_
70