Panels: Adding 3-step animation on minimize on Linux

chrome/browser/ui/panels/panel_slide_animation.h

+// Copyright (c) 2011 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_PANELS_PANEL_SLIDE_ANIMATION_H_
+#define CHROME_BROWSER_UI_PANELS_PANEL_SLIDE_ANIMATION_H_
+#pragma once
+
+#include "ui/base/animation/slide_animation.h"
+
+namespace ui {
+class AnimationDelegate;
+}
+class Panel;
+
+class PanelSlideAnimation : public ui::SlideAnimation {
+ public:
+  PanelSlideAnimation(ui::AnimationDelegate* target,
+                      Panel* panel,
+                      const gfx::Rect& initial_bounds,
+                      const gfx::Rect& final_bounds);
+  virtual ~PanelSlideAnimation();
+  virtual double GetCurrentValue() const OVERRIDE;
+
+  // Static because it is reused on Mac to override NSAnimation's calculation.
+  static double ComputeAnimationValue(double progress,
+                                      bool for_big_minimize,
+                                      double animation_stop_to_show_titlebar);
+ private:
+  Panel* panel_;  // Weak, owns us.
+  bool for_big_minimize_;
+  double animation_stop_to_show_titlebar_;
+
+  DISALLOW_COPY_AND_ASSIGN(PanelSlideAnimation);
+};
+
+#endif  // CHROME_BROWSER_UI_PANELS_PANEL_SLIDE_ANIMATION_H_