keyframelist.h

linux下开源浏览器WebKit的源码,市面上的很多商用浏览器都是移植自WebKit

/*
 * Copyright (C) 2000 Lars Knoll ([e-mail])
 *           (C) 2000 Antti Koivisto ([e-mail])
 *           (C) 2000 Dirk Mueller ([e-mail])
 * Copyright (C) 2003, 2005, 2006, 2007, 2008 Apple Inc. All rights reserved.
 * Copyright (C) 2006 Graham Dennis ([e-mail])
 *
 * This library is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Library General Public
 * License as published by the Free Software Foundation; either
 * version 2 of the License, or (at your option) any later version.
 *
 * This library is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * Library General Public License for more details.
 *
 * You should have received a copy of the GNU Library General Public License
 * along with this library; see the file COPYING.LIB.  If not, write to
 * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
 * Boston, MA 02110-1301, USA.
 *
 */

#ifndef KeyframeList_h
#define KeyframeList_h

#include "AtomicString.h"
#include <wtf/Vector.h>
#include <wtf/HashSet.h>
#include <wtf/RefPtr.h>

namespace WebCore {

class RenderObject;
class RenderStyle;

class KeyframeValue {
public:
    KeyframeValue()
        : m_key(-1)
    {
    }

    float key() const { return m_key; }
    const RenderStyle* style() const { return m_style.get(); }

    float m_key;
    RefPtr<RenderStyle> m_style;
};

class KeyframeList {
public:
    KeyframeList(RenderObject* renderer, const AtomicString& animationName)
        : m_animationName(animationName)
        , m_renderer(renderer)
    {
        insert(0, 0);
        insert(1, 0);
    }
    ~KeyframeList();
        
    bool operator==(const KeyframeList& o) const;
    bool operator!=(const KeyframeList& o) const { return !(*this == o); }
    
    const AtomicString& animationName() const { return m_animationName; }
    
    void insert(float key, PassRefPtr<RenderStyle> style);
    
    void addProperty(int prop) { m_properties.add(prop); }
    bool containsProperty(int prop) const { return m_properties.contains(prop); }
    HashSet<int>::const_iterator beginProperties() const { return m_properties.begin(); }
    HashSet<int>::const_iterator endProperties() const { return m_properties.end(); }
    
    void clear();
    bool isEmpty() const { return m_keyframes.isEmpty(); }
    size_t size() const { return m_keyframes.size(); }
    Vector<KeyframeValue>::const_iterator beginKeyframes() const { return m_keyframes.begin(); }
    Vector<KeyframeValue>::const_iterator endKeyframes() const { return m_keyframes.end(); }

private:
    AtomicString m_animationName;
    Vector<KeyframeValue> m_keyframes;
    HashSet<int> m_properties;       // the properties being animated
    RenderObject* m_renderer;
};

} // namespace WebCore

#endif // KeyframeList_h