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      1 // Copyright 2013 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 UI_WM_PUBLIC_ANIMATION_HOST_H_
      6 #define UI_WM_PUBLIC_ANIMATION_HOST_H_
      7 
      8 #include "base/compiler_specific.h"
      9 #include "ui/aura/aura_export.h"
     10 
     11 namespace gfx {
     12 class Vector2d;
     13 }
     14 
     15 namespace aura {
     16 class Window;
     17 namespace client {
     18 
     19 // Interface for top level window host of animation. Communicates additional
     20 // bounds required for animation as well as animation completion for deferring
     21 // window closes on hide.
     22 class AURA_EXPORT AnimationHost {
     23  public:
     24   // Ensure the host window is at least this large so that transitions have
     25   // sufficient space.
     26   // The |top_left_delta| parameter contains the offset to be subtracted from
     27   // the window bounds for the top left corner.
     28   // The |bottom_right_delta| parameter contains the offset to be added to the
     29   // window bounds for the bottom right.
     30   virtual void SetHostTransitionOffsets(
     31       const gfx::Vector2d& top_left_delta,
     32       const gfx::Vector2d& bottom_right_delta) = 0;
     33 
     34   // Called after the window has faded out on a hide.
     35   virtual void OnWindowHidingAnimationCompleted() = 0;
     36 
     37  protected:
     38   virtual ~AnimationHost() {}
     39 };
     40 
     41 AURA_EXPORT void SetAnimationHost(Window* window,
     42                                   AnimationHost* animation_host);
     43 AURA_EXPORT AnimationHost* GetAnimationHost(Window* window);
     44 
     45 }  // namespace client
     46 }  // namespace aura
     47 
     48 #endif  // UI_WM_PUBLIC_ANIMATION_HOST_H_
     49