| // 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/compositor/layer_animation_element.h" |
| #include "ui/gfx/geometry/point.h" |
| |
| namespace ui { |
| class InterpolatedTransform; |
| class Layer; |
| } |
| |
| 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: |
| // |degrees| are clockwise. |layer| is the target of the animation. Does not |
| // take ownership of |layer|. |
| ScreenRotation(int degrees, ui::Layer* layer); |
| ~ScreenRotation() override; |
| |
| private: |
| // Generates the intermediate transformation matrices used during the |
| // animation. |
| void InitTransform(ui::Layer* layer); |
| |
| // Implementation of ui::LayerAnimationDelegate |
| void OnStart(ui::LayerAnimationDelegate* delegate) override; |
| bool OnProgress(double t, ui::LayerAnimationDelegate* delegate) override; |
| void OnGetTarget(TargetValue* target) const override; |
| void OnAbort(ui::LayerAnimationDelegate* delegate) override; |
| |
| scoped_ptr<ui::InterpolatedTransform> 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_ |