brettw@chromium.org
841794523c
I mvoed the implementation of the previously-inline amimate function to the .cc file so we don't have to depend on STL includes in the header. Review URL: http://codereview.chromium.org/155170 git-svn-id: svn://svn.chromium.org/chrome/trunk/src@20091 0039d316-1c4b-4281-b951-d872f2087c98
106 linhas
3.5 KiB
C++
106 linhas
3.5 KiB
C++
// Copyright (c) 2009 The Chromium Authors. All rights reserved. Use of this
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// source code is governed by a BSD-style license that can be found in the
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// LICENSE file.
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#ifndef VIEWS_ANIMATOR_H_
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#define VIEWS_ANIMATOR_H_
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#include "app/animation.h"
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#include "base/gfx/rect.h"
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#include "base/ref_counted.h"
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#include "base/scoped_ptr.h"
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class SlideAnimation;
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////////////////////////////////////////////////////////////////////////////////
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// ALERT!
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//
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// This API is preliminary and subject to change. Talk to beng before using it!
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//
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namespace views {
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class View;
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class AnimatorDelegate {
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public:
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// Returns the view in the visual layout whose trailing edge the view that
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// hosts an animator should be clamped to during animations, when
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// ANIMATE_CLAMP is specified in combination with ANIMATE_X or ANIMATE_Y.
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virtual View* GetClampedView(View* host) = 0;
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// Notifies the delegate that the active animation running for |host| has
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// completed.
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virtual void AnimationCompletedForHost(View* host) = 0;
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};
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// An animator is an object that can animate actions on a host view. Once
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// created, an Animator is typically owned by its host view.
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class Animator : public AnimationDelegate {
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public:
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enum BoundsChangeFlags {
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ANIMATE_NONE = 0x0, // Don't animate anything... o_O
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ANIMATE_X = 0x1, // Animate the host view's x position
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ANIMATE_Y = 0x2, // Animate the host view's y position
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ANIMATE_WIDTH = 0x4, // Animate the host view's width
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ANIMATE_HEIGHT = 0x8, // Animate the host view's height
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ANIMATE_CLAMP = 0x10 // Clamp the host view's x or y position to the
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// trailing edge of the view returned by
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// AnimatorDelegate::GetClampedView.
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};
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// Creates the animator for the specified host view. Optionally an
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// AnimationContext can be provided to animate multiple views from a single
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// animation.
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explicit Animator(View* host);
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Animator(View* host, AnimatorDelegate* delegate);
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virtual ~Animator();
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// Returns true if the animator is currently animating.
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bool IsAnimating() const;
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// Moves/sizes the host view to the specified bounds. |direction| is a
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// combination of the above flags indicating what aspects of the bounds should
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// be animated.
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void AnimateToBounds(const gfx::Rect& bounds, int direction);
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void AnimateToBounds(int x, int y, int width, int height, int direction);
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// Overridden from AnimationDelegate:
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virtual void AnimationEnded(const Animation* animation);
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virtual void AnimationProgressed(const Animation* animation);
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virtual void AnimationCanceled(const Animation* animation);
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private:
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void InitAnimation();
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// Get the current X/Y position of the host view, clamped to the right edge of
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// the previous view in the visual layout, if applicable (See
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// AnimatorDelegate for more info).
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int GetClampedX() const;
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int GetClampedY() const;
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// The view that this animator is attached to.
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View* host_;
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// Start and end bounds for the animation.
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gfx::Rect start_bounds_;
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gfx::Rect target_bounds_;
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// The animation used by this animator.
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scoped_ptr<SlideAnimation> animation_;
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// A delegate object that provides information about surrounding views.
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// Will be NULL during this class' destructor.
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AnimatorDelegate* delegate_;
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// Some combination of BoundsChangeFlags indicating the type of bounds change
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// the host view is subject to.
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int direction_;
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DISALLOW_COPY_AND_ASSIGN(Animator);
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};
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} // namespace views
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#endif // #ifndef VIEWS_ANIMATOR_H_
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