[Web Intents] CWS inline install for GTK

chrome/browser/ui/gtk/throbber_gtk.h

+// Copyright (c) 2012 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#ifndef CHROME_BROWSER_UI_GTK_THROBBER_GTK_H_
+#define CHROME_BROWSER_UI_GTK_THROBBER_GTK_H_
+#pragma once
+
+#include <gtk/gtk.h>
+
+#include "base/compiler_specific.h"
+#include "content/public/browser/notification_observer.h"
+#include "content/public/browser/notification_registrar.h"
+#include "ui/base/animation/animation_delegate.h"
+#include "ui/base/animation/slide_animation.h"
+#include "ui/base/gtk/gtk_signal.h"
+#include "ui/base/gtk/owned_widget_gtk.h"
+#include "ui/gfx/image/image.h"
+
+class SkBitmap;
+class ThemeServiceGtk;
+
+// An animating throbber.
+class ThrobberGtk : public ui::AnimationDelegate,

[James Hawkins, 2012/03/30 21:35:02]

This hasn't existed previously?

[binji, 2012/03/30 23:03:51]

Not as a standalone widget, AFAICT.

+                    public content::NotificationObserver {
+ public:
+  explicit ThrobberGtk(ThemeServiceGtk* theme_service);

[James Hawkins, 2012/03/30 21:35:02]

nit: Document |theme_service|.  Probably must not be NULL.

[binji, 2012/03/30 23:03:51]

Done.

+  virtual ~ThrobberGtk();
+
+  // Start or stop the throbbing animation.
+  void Start();
+  void Stop();
+
+  GtkWidget* widget() const { return widget_.get(); }
+
+  // ui::AnimationDelegate implementation.
+  virtual void AnimationEnded(const ui::Animation* animation) OVERRIDE;
+  virtual void AnimationProgressed(const ui::Animation* animation) OVERRIDE;
+
+  // content::NotificationObserver implementation.
+  virtual void Observe(int type,
+                       const content::NotificationSource& source,
+                       const content::NotificationDetails& details) OVERRIDE;
+
+ private:
+  CHROMEGTK_CALLBACK_1(ThrobberGtk, gboolean, OnExpose, GdkEventExpose*);
+
+  // Initialize the widget.
+  void Init();
+
+  // Load the animation frames from IDR_THROBBER.
+  void LoadFrames();
+
+  content::NotificationRegistrar registrar_;
+
+  // The theme service.

[James Hawkins, 2012/03/30 21:35:02]

Document ownership (probably weak pointer).

[binji, 2012/03/30 23:03:51]

Done.

+  ThemeServiceGtk* theme_service_;
+
+  // The actual GtkWidget.
+  ui::OwnedWidgetGtk widget_;
+
+  // A linear animation over the loaded frames.
+  ui::SlideAnimation animation_;

[Evan Stade, 2012/03/30 21:38:25]

ThrobAnimation?

[binji, 2012/03/30 23:03:51]

Tried that first, seems like it autoreverses.

[Evan Stade, 2012/03/31 01:24:35]

in what way? it goes counter clockwise?

[binji, 2012/04/02 18:22:36]

Yes. As I understand it, the ThrobAnimation is useful for pulsing, not cycling.

+
+  // The image containing the throbber frames.
+  const gfx::Image* frames_;
+
+  // The number of frames in |frames_|.
+  int num_frames_;
+
+  DISALLOW_COPY_AND_ASSIGN(ThrobberGtk);
+};
+
+#endif  // CHROME_BROWSER_UI_GTK_THROBBER_GTK_H_