// 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 ASH_SCREEN_ROTATION_H_ #define ASH_SCREEN_ROTATION_H_ #include "ash/ash_export.h" #include "base/basictypes.h" #include "base/memory/scoped_ptr.h" #include "ui/base/animation/animation_delegate.h" #include "ui/compositor/compositor_export.h" #include "ui/compositor/layer_animation_element.h" #include "ui/gfx/point.h" namespace ui { class InterpolatedTransform; class LayerAnimationDelegate; } namespace aura { class RootWindow; } namespace ash { // A screen rotation represents a single transition from one screen orientation // to another. The intended usage is that a new instance of the class is // created for every transition. It is possible to update the target orientation // in the middle of a transition. class ASH_EXPORT ScreenRotation : public ui::LayerAnimationElement { public: // The screen rotation does not own the view or the listener, and these // objects are required to outlive the Screen rotation object. ScreenRotation(int degrees); virtual ~ScreenRotation(); private: // Implementation of ui::LayerAnimationDelegate virtual void OnStart(ui::LayerAnimationDelegate* delegate) OVERRIDE; virtual bool OnProgress(double t, ui::LayerAnimationDelegate* delegate) OVERRIDE; virtual void OnGetTarget(TargetValue* target) const OVERRIDE; virtual void OnAbort() OVERRIDE; static const ui::LayerAnimationElement::AnimatableProperties& GetProperties(); // Generates the intermediate transformation matrices used during the // animation. scoped_ptr interpolated_transform_; // The number of degrees to rotate. int degrees_; // The target origin gfx::Point new_origin_; DISALLOW_COPY_AND_ASSIGN(ScreenRotation); }; } // namespace ash #endif // ASH_SCREEN_ROTATION_H_