Move chrome/browser/gtk to chrome/browser/ui/gtk

chrome/browser/ui/gtk/hover_controller_gtk.h

+// 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_UI_GTK_HOVER_CONTROLLER_GTK_H_
+#define CHROME_BROWSER_UI_GTK_HOVER_CONTROLLER_GTK_H_
+#pragma once
+
+#include <gtk/gtk.h>
+
+#include "app/gtk_signal.h"
+#include "app/gtk_signal_registrar.h"
+#include "ui/base/animation/animation_delegate.h"
+#include "ui/base/animation/slide_animation.h"
+#include "ui/base/animation/throb_animation.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 ui::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 ui::AnimationDelegate.
+  virtual void AnimationProgressed(const ui::Animation* animation);
+  virtual void AnimationEnded(const ui::Animation* animation);
+  virtual void AnimationCanceled(const ui::Animation* animation);
+
+  CHROMEGTK_CALLBACK_1(HoverControllerGtk, gboolean, OnEnter,
+                       GdkEventCrossing*);
+  CHROMEGTK_CALLBACK_1(HoverControllerGtk, gboolean, OnLeave,
+                       GdkEventCrossing*);
+  CHROMEGTK_CALLBACK_1(HoverControllerGtk, void, OnHierarchyChanged,
+                       GtkWidget*);
+  CHROMEGTK_CALLBACK_0(HoverControllerGtk, void, OnDestroy);
+
+  ui::ThrobAnimation throb_animation_;
+  ui::SlideAnimation hover_animation_;
+  GtkWidget* button_;
+
+  GtkSignalRegistrar signals_;
+
+  DISALLOW_COPY_AND_ASSIGN(HoverControllerGtk);
+};
+
+#endif  // CHROME_BROWSER_UI_GTK_HOVER_CONTROLLER_GTK_H_