tab_icon_view.h revision cedac228d2dd51db4b79ea1e72c7f249408ee061 
1// Copyright (c) 2012 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_VIEWS_TAB_ICON_VIEW_H_
6#define CHROME_BROWSER_UI_VIEWS_TAB_ICON_VIEW_H_
7
8#include "base/basictypes.h"
9#include "base/compiler_specific.h"
10#include "ui/views/controls/button/menu_button.h"
11#include "ui/views/view.h"
12
13namespace chrome {
14class TabIconViewModel;
15}
16
17namespace gfx {
18class ImageSkia;
19}
20
21// A view to display a tab favicon or a throbber.
22class TabIconView : public views::MenuButton {
23 public:
24  static void InitializeIfNeeded();
25
26  TabIconView(chrome::TabIconViewModel* model,
27              views::MenuButtonListener* menu_button_listener);
28  virtual ~TabIconView();
29
30  // Invoke whenever the tab state changes or the throbber should update.
31  void Update();
32
33  // Set the throbber to the light style (for use on dark backgrounds).
34  void set_is_light(bool is_light) { is_light_ = is_light; }
35
36  // Overridden from View
37  virtual void OnPaint(gfx::Canvas* canvas) OVERRIDE;
38  virtual gfx::Size GetPreferredSize() const OVERRIDE;
39
40 private:
41  void PaintThrobber(gfx::Canvas* canvas);
42  void PaintFavicon(gfx::Canvas* canvas, const gfx::ImageSkia& image);
43  void PaintIcon(gfx::Canvas* canvas,
44                 const gfx::ImageSkia& image,
45                 int src_x,
46                 int src_y,
47                 int src_w,
48                 int src_h,
49                 bool filter);
50
51  // Our model.
52  chrome::TabIconViewModel* model_;
53
54  // Whether the throbber is running.
55  bool throbber_running_;
56
57  // Whether we should display our light or dark style.
58  bool is_light_;
59
60  // Current frame of the throbber being painted. This is only used if
61  // throbber_running_ is true.
62  int throbber_frame_;
63
64  DISALLOW_COPY_AND_ASSIGN(TabIconView);
65};
66
67#endif  // CHROME_BROWSER_UI_VIEWS_TAB_ICON_VIEW_H_
68