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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_GTK_THROBBER_GTK_H_ | |
6 #define CHROME_BROWSER_UI_GTK_THROBBER_GTK_H_ | |
7 | |
8 #include <gtk/gtk.h> | |
9 | |
10 #include "base/compiler_specific.h" | |
11 #include "content/public/browser/notification_observer.h" | |
12 #include "content/public/browser/notification_registrar.h" | |
13 #include "ui/base/gtk/gtk_signal.h" | |
14 #include "ui/base/gtk/owned_widget_gtk.h" | |
15 #include "ui/gfx/animation/animation_delegate.h" | |
16 #include "ui/gfx/animation/slide_animation.h" | |
17 #include "ui/gfx/image/image.h" | |
18 | |
19 class GtkThemeService; | |
20 class SkBitmap; | |
21 | |
22 // An animating throbber. | |
23 class ThrobberGtk : public gfx::AnimationDelegate, | |
24 public content::NotificationObserver { | |
25 public: | |
26 // |theme_service| must not be NULL. | |
27 explicit ThrobberGtk(GtkThemeService* theme_service); | |
28 virtual ~ThrobberGtk(); | |
29 | |
30 // Start or stop the throbbing animation. | |
31 void Start(); | |
32 void Stop(); | |
33 | |
34 GtkWidget* widget() const { return widget_.get(); } | |
35 | |
36 // gfx::AnimationDelegate implementation. | |
37 virtual void AnimationEnded(const gfx::Animation* animation) OVERRIDE; | |
38 virtual void AnimationProgressed(const gfx::Animation* animation) OVERRIDE; | |
39 | |
40 // content::NotificationObserver implementation. | |
41 virtual void Observe(int type, | |
42 const content::NotificationSource& source, | |
43 const content::NotificationDetails& details) OVERRIDE; | |
44 | |
45 private: | |
46 CHROMEGTK_CALLBACK_1(ThrobberGtk, gboolean, OnExpose, GdkEventExpose*); | |
47 | |
48 // Initialize the widget. | |
49 void Init(); | |
50 | |
51 // Load the animation frames from IDR_THROBBER. | |
52 void LoadFrames(); | |
53 | |
54 content::NotificationRegistrar registrar_; | |
55 | |
56 // The theme service. Weak pointer. | |
57 GtkThemeService* theme_service_; | |
58 | |
59 // The actual GtkWidget. | |
60 ui::OwnedWidgetGtk widget_; | |
61 | |
62 // A linear animation over the loaded frames. | |
63 gfx::SlideAnimation animation_; | |
64 | |
65 // The image containing the throbber frames. | |
66 gfx::Image frames_; | |
67 | |
68 // The number of frames in |frames_|. | |
69 int num_frames_; | |
70 | |
71 DISALLOW_COPY_AND_ASSIGN(ThrobberGtk); | |
72 }; | |
73 | |
74 #endif // CHROME_BROWSER_UI_GTK_THROBBER_GTK_H_ | |
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