chromium/ui/views/animation/bounds_animator.h

// Copyright 2012 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

#ifndef UI_VIEWS_ANIMATION_BOUNDS_ANIMATOR_H_
#define UI_VIEWS_ANIMATION_BOUNDS_ANIMATOR_H_

#include <map>
#include <memory>

#include "base/memory/raw_ptr.h"
#include "base/memory/scoped_refptr.h"
#include "base/observer_list.h"
#include "ui/gfx/animation/animation_container.h"
#include "ui/gfx/animation/animation_container_observer.h"
#include "ui/gfx/animation/tween.h"
#include "ui/gfx/geometry/rect.h"
#include "ui/views/animation/animation_delegate_views.h"
#include "ui/views/views_export.h"

namespace gfx {
class SlideAnimation;
}

namespace views {

class BoundsAnimatorObserver;
class View;

// Bounds animator is responsible for animating the bounds of a view from the
// the views current location and size to a target position and size. To use
// BoundsAnimator invoke AnimateViewTo for the set of views you want to
// animate.
//
// BoundsAnimator internally creates an animation for each view. If you need
// a specific animation invoke SetAnimationForView after invoking AnimateViewTo.
// You can attach an AnimationDelegate to the individual animation for a view
// by way of SetAnimationDelegate. Additionally you can attach an observer to
// the BoundsAnimator that is notified when all animations are complete.
//
// There is an option to apply transforms on the view instead of repainting and
// relayouting each animation tick. This should be used if the size of the view
// is not changing. It can be considered, but may have funny looking visuals for
// other cases, depending on the content. If layers are not present, they are
// created and destroyed as necessary.
class VIEWS_EXPORT BoundsAnimator : public AnimationDelegateViews { … };

}  // namespace views

#endif  // UI_VIEWS_ANIMATION_BOUNDS_ANIMATOR_H_