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      1 /*
      2  * Copyright (C) 1999 Antti Koivisto (koivisto (at) kde.org)
      3  * Copyright (C) 2004, 2005, 2006, 2007, 2008 Apple Inc. All rights reserved.
      4  *
      5  * This library is free software; you can redistribute it and/or
      6  * modify it under the terms of the GNU Library General Public
      7  * License as published by the Free Software Foundation; either
      8  * version 2 of the License, or (at your option) any later version.
      9  *
     10  * This library is distributed in the hope that it will be useful,
     11  * but WITHOUT ANY WARRANTY; without even the implied warranty of
     12  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
     13  * Library General Public License for more details.
     14  *
     15  * You should have received a copy of the GNU Library General Public License
     16  * along with this library; see the file COPYING.LIB.  If not, write to
     17  * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
     18  * Boston, MA 02110-1301, USA.
     19  *
     20  */
     21 
     22 #include "config.h"
     23 #include "core/rendering/style/KeyframeList.h"
     24 
     25 #include "core/css/StylePropertySet.h"
     26 #include "core/rendering/RenderObject.h"
     27 
     28 namespace WebCore {
     29 
     30 void KeyframeValue::addProperties(const StylePropertySet* propertySet)
     31 {
     32     if (!propertySet)
     33         return;
     34     unsigned propertyCount = propertySet->propertyCount();
     35     for (unsigned i = 0; i < propertyCount; ++i) {
     36         CSSPropertyID property = propertySet->propertyAt(i).id();
     37         // Timing-function within keyframes is special, because it is not animated; it just
     38         // describes the timing function between this keyframe and the next.
     39         if (property != CSSPropertyWebkitAnimationTimingFunction)
     40             addProperty(property);
     41     }
     42 }
     43 
     44 KeyframeList::~KeyframeList()
     45 {
     46     clear();
     47 }
     48 
     49 void KeyframeList::clear()
     50 {
     51     m_keyframes.clear();
     52     m_properties.clear();
     53 }
     54 
     55 bool KeyframeList::operator==(const KeyframeList& o) const
     56 {
     57     if (m_keyframes.size() != o.m_keyframes.size())
     58         return false;
     59 
     60     Vector<KeyframeValue>::const_iterator it2 = o.m_keyframes.begin();
     61     for (Vector<KeyframeValue>::const_iterator it1 = m_keyframes.begin(); it1 != m_keyframes.end(); ++it1) {
     62         if (it1->key() != it2->key())
     63             return false;
     64         const RenderStyle& style1 = *it1->style();
     65         const RenderStyle& style2 = *it2->style();
     66         if (style1 != style2)
     67             return false;
     68         ++it2;
     69     }
     70 
     71     return true;
     72 }
     73 
     74 void KeyframeList::insert(const KeyframeValue& keyframe)
     75 {
     76     if (keyframe.key() < 0 || keyframe.key() > 1)
     77         return;
     78 
     79     bool inserted = false;
     80     bool replaced = false;
     81     for (size_t i = 0; i < m_keyframes.size(); ++i) {
     82         if (m_keyframes[i].key() == keyframe.key()) {
     83             m_keyframes[i] = keyframe;
     84             replaced = true;
     85             break;
     86         }
     87 
     88         if (m_keyframes[i].key() > keyframe.key()) {
     89             // insert before
     90             m_keyframes.insert(i, keyframe);
     91             inserted = true;
     92             break;
     93         }
     94     }
     95 
     96     if (!replaced && !inserted)
     97         m_keyframes.append(keyframe);
     98 
     99     if (replaced) {
    100         // We have to rebuild the properties list from scratch.
    101         m_properties.clear();
    102         for (Vector<KeyframeValue>::const_iterator it = m_keyframes.begin(); it != m_keyframes.end(); ++it) {
    103             const KeyframeValue& currKeyframe = *it;
    104             for (HashSet<CSSPropertyID>::const_iterator it = currKeyframe.properties().begin(); it != currKeyframe.properties().end(); ++it)
    105                 m_properties.add(*it);
    106         }
    107     } else {
    108         for (HashSet<CSSPropertyID>::const_iterator it = keyframe.properties().begin(); it != keyframe.properties().end(); ++it)
    109             m_properties.add(*it);
    110     }
    111 }
    112 
    113 } // namespace WebCore
    114