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      1 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
      2 // Use of this source code is governed by a BSD-style license that can be
      3 // found in the LICENSE file.
      4 
      5 #ifndef ASH_WM_WINDOW_ANIMATIONS_H_
      6 #define ASH_WM_WINDOW_ANIMATIONS_H_
      7 
      8 #include "ash/ash_export.h"
      9 #include "base/memory/scoped_ptr.h"
     10 #include "ui/gfx/animation/tween.h"
     11 #include "ui/gfx/transform.h"
     12 #include "ui/wm/core/window_animations.h"
     13 
     14 namespace aura {
     15 class Window;
     16 }
     17 namespace ui {
     18 class Layer;
     19 class LayerTreeOwner;
     20 }
     21 namespace views {
     22 }
     23 
     24 // This is only for animations specific to Ash. For window animations shared
     25 // with desktop Chrome, see ui/views/corewm/window_animations.h.
     26 namespace ash {
     27 
     28 // An extension of the window animations provided by CoreWm. These should be
     29 // Ash-specific only.
     30 enum WindowVisibilityAnimationType {
     31   // Window scale/rotates down to its launcher icon.
     32   WINDOW_VISIBILITY_ANIMATION_TYPE_MINIMIZE =
     33       ::wm::WINDOW_VISIBILITY_ANIMATION_MAX,
     34   // Fade in/out using brightness and grayscale web filters.
     35   WINDOW_VISIBILITY_ANIMATION_TYPE_BRIGHTNESS_GRAYSCALE
     36 };
     37 
     38 // Direction for ash-specific window animations used in workspaces and
     39 // lock/unlock animations.
     40 enum LayerScaleAnimationDirection {
     41   LAYER_SCALE_ANIMATION_ABOVE,
     42   LAYER_SCALE_ANIMATION_BELOW,
     43 };
     44 
     45 // Amount of time for the cross fade animation.
     46 extern const int kCrossFadeDurationMS;
     47 
     48 // Implementation of cross fading. Window is the window being cross faded. It
     49 // should be at the target bounds. |old_layer_owner| contains the previous layer
     50 // from |window|.  |tween_type| specifies the tween type of the cross fade
     51 // animation.
     52 ASH_EXPORT base::TimeDelta CrossFadeAnimation(
     53     aura::Window* window,
     54     scoped_ptr<ui::LayerTreeOwner> old_layer_owner,
     55     gfx::Tween::Type tween_type);
     56 
     57 ASH_EXPORT bool AnimateOnChildWindowVisibilityChanged(aura::Window* window,
     58                                                       bool visible);
     59 
     60 // Creates vector of animation sequences that lasts for |duration| and changes
     61 // brightness and grayscale to |target_value|. Caller takes ownership of
     62 // returned LayerAnimationSequence objects.
     63 ASH_EXPORT std::vector<ui::LayerAnimationSequence*>
     64 CreateBrightnessGrayscaleAnimationSequence(float target_value,
     65                                            base::TimeDelta duration);
     66 
     67 // Applies scale related to the specified AshWindowScaleType.
     68 ASH_EXPORT void SetTransformForScaleAnimation(
     69     ui::Layer* layer,
     70     LayerScaleAnimationDirection type);
     71 
     72 // Returns the approximate bounds to which |window| will be animated when it
     73 // is minimized. The bounds are approximate because the minimize animation
     74 // involves rotation.
     75 ASH_EXPORT gfx::Rect GetMinimizeAnimationTargetBoundsInScreen(
     76     aura::Window* window);
     77 
     78 }  // namespace ash
     79 
     80 #endif  // ASH_WM_WINDOW_ANIMATIONS_H_
     81