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// Copyright (c) 2010 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_GTK_HOVER_CONTROLLER_GTK_H_
#define CHROME_BROWSER_GTK_HOVER_CONTROLLER_GTK_H_
#include <gtk/gtk.h>
#include "app/slide_animation.h"
#include "app/throb_animation.h"
#include "base/scoped_ptr.h"
// This class handles the "throbbing" of a GtkChromeButton. The visual effect
// of throbbing is created by painting partially transparent hover effects. It
// only works in non-gtk theme mode. This class mainly exists to glue an
// AnimationDelegate (C++ class) to a GtkChromeButton* (GTK/c object).
class HoverControllerGtk : public AnimationDelegate {
public:
virtual ~HoverControllerGtk();
GtkWidget* button() { return button_; }
// Throb for |cycles| cycles. This will override the current remaining
// number of cycles. Note that a "cycle" is (somewhat unintuitively) half of
// a complete throb revolution.
void StartThrobbing(int cycles);
// Get the HoverControllerGtk for a given GtkChromeButton*. It is an error
// to call this on a widget that is not a GtkChromeButton*.
static HoverControllerGtk* GetHoverControllerGtk(GtkWidget* button);
// Creates a GtkChromeButton and adds a HoverControllerGtk for it.
static GtkWidget* CreateChromeButton();
// Stop throbbing and delete |this|.
void Destroy();
private:
explicit HoverControllerGtk(GtkWidget* button);
// Overridden from AnimationDelegate.
virtual void AnimationProgressed(const Animation* animation);
virtual void AnimationEnded(const Animation* animation);
virtual void AnimationCanceled(const Animation* animation);
static gboolean OnEnterThunk(GtkWidget* widget,
GdkEventCrossing* event,
HoverControllerGtk* hover_controller) {
return hover_controller->OnEnter(widget, event);
}
gboolean OnEnter(GtkWidget* widget, GdkEventCrossing* event);
static gboolean OnLeaveThunk(GtkWidget* widget,
GdkEventCrossing* event,
HoverControllerGtk* hover_controller) {
return hover_controller->OnLeave(widget, event);
}
gboolean OnLeave(GtkWidget* widget, GdkEventCrossing* event);
static void OnButtonDestroyThunk(GtkWidget* widget,
HoverControllerGtk* hover_controller) {
hover_controller->OnButtonDestroy(widget);
}
void OnButtonDestroy(GtkWidget* widget);
ThrobAnimation throb_animation_;
SlideAnimation hover_animation_;
GtkWidget* button_;
DISALLOW_COPY_AND_ASSIGN(HoverControllerGtk);
};
#endif // CHROME_BROWSER_GTK_HOVER_CONTROLLER_GTK_H_
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