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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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