C++ KeyframeAnimation::clearRenderer方法代码示例

void CompositeAnimationPrivate::clearRenderer()
{
    // Clear the renderers from all running animations, in case we are in the middle of
    // an animation callback (see https://bugs.webkit.org/show_bug.cgi?id=22052)
    CSSPropertyTransitionsMap::const_iterator transitionsEnd = m_transitions.end();
    for (CSSPropertyTransitionsMap::const_iterator it = m_transitions.begin(); it != transitionsEnd; ++it) {
        ImplicitAnimation* transition = it->second.get();
        transition->clearRenderer();
    }

    AnimationNameMap::const_iterator animationsEnd = m_keyframeAnimations.end();
    for (AnimationNameMap::const_iterator it = m_keyframeAnimations.begin(); it != animationsEnd; ++it) {
        KeyframeAnimation* anim = it->second.get();
        anim->clearRenderer();
    }
    

}

void CompositeAnimation::clearRenderer()
{
    if (!m_transitions.isEmpty()) {
        // Clear the renderers from all running animations, in case we are in the middle of
        // an animation callback (see https://bugs.webkit.org/show_bug.cgi?id=22052)
        CSSPropertyTransitionsMap::const_iterator transitionsEnd = m_transitions.end();
        for (CSSPropertyTransitionsMap::const_iterator it = m_transitions.begin(); it != transitionsEnd; ++it) {
            ImplicitAnimation* transition = it->second.get();
            animationController()->animationWillBeRemoved(transition);
            transition->clearRenderer();
        }
    }
    if (!m_keyframeAnimations.isEmpty()) {
        m_keyframeAnimations.checkConsistency();
        AnimationNameMap::const_iterator animationsEnd = m_keyframeAnimations.end();
        for (AnimationNameMap::const_iterator it = m_keyframeAnimations.begin(); it != animationsEnd; ++it) {
            KeyframeAnimation* anim = it->second.get();
            animationController()->animationWillBeRemoved(anim);
            anim->clearRenderer();
        }
    }
}

void CompositeAnimation::updateKeyframeAnimations(RenderObject* renderer, RenderStyle* currentStyle, RenderStyle* targetStyle)
{
    // Nothing to do if we don't have any animations, and didn't have any before
    if (m_keyframeAnimations.isEmpty() && !targetStyle->hasAnimations())
        return;

    m_keyframeAnimations.checkConsistency();

    AnimationNameMap::const_iterator kfend = m_keyframeAnimations.end();
    
    if (currentStyle && currentStyle->hasAnimations() && targetStyle->hasAnimations() && *(currentStyle->animations()) == *(targetStyle->animations())) {
        // The current and target animations are the same so we just need to toss any 
        // animation which is finished (postActive).
        for (AnimationNameMap::const_iterator it = m_keyframeAnimations.begin(); it != kfend; ++it) {
            if (it->second->postActive())
                it->second->setIndex(-1);
        }
    } else {
        // Mark all existing animations as no longer active.
        for (AnimationNameMap::const_iterator it = m_keyframeAnimations.begin(); it != kfend; ++it)
            it->second->setIndex(-1);
            
        // Toss the animation order map.
        m_keyframeAnimationOrderMap.clear();

        DEFINE_STATIC_LOCAL(const AtomicString, none, ("none"));
        
        // Now mark any still active animations as active and add any new animations.
        if (targetStyle->animations()) {
            int numAnims = targetStyle->animations()->size();
            for (int i = 0; i < numAnims; ++i) {
                const Animation* anim = targetStyle->animations()->animation(i);
                AtomicString animationName(anim->name());

                if (!anim->isValidAnimation())
                    continue;
                
                // See if there is a current animation for this name.
                RefPtr<KeyframeAnimation> keyframeAnim = m_keyframeAnimations.get(animationName.impl());
                
                if (keyframeAnim) {
                    // If this animation is postActive, skip it so it gets removed at the end of this function.
                    if (keyframeAnim->postActive())
                        continue;
                    
                    // This one is still active.

                    // Animations match, but play states may differ. Update if needed.
                    keyframeAnim->updatePlayState(anim->playState());
                                
                    // Set the saved animation to this new one, just in case the play state has changed.
                    keyframeAnim->setAnimation(anim);
                    keyframeAnim->setIndex(i);
                } else if ((anim->duration() || anim->delay()) && anim->iterationCount() && animationName != none) {
                    keyframeAnim = KeyframeAnimation::create(const_cast<Animation*>(anim), renderer, i, this, targetStyle);
                    m_keyframeAnimations.set(keyframeAnim->name().impl(), keyframeAnim);
                }
                
                // Add this to the animation order map.
                if (keyframeAnim)
                    m_keyframeAnimationOrderMap.append(keyframeAnim->name().impl());
            }
        }
    }
    
    // Make a list of animations to be removed.
    Vector<AtomicStringImpl*> animsToBeRemoved;
    kfend = m_keyframeAnimations.end();
    for (AnimationNameMap::const_iterator it = m_keyframeAnimations.begin(); it != kfend; ++it) {
        KeyframeAnimation* keyframeAnim = it->second.get();
        if (keyframeAnim->index() < 0) {
            animsToBeRemoved.append(keyframeAnim->name().impl());
            animationController()->animationWillBeRemoved(keyframeAnim);
            keyframeAnim->clearRenderer();
        }
    }
    
    // Now remove the animations from the list.
    for (size_t j = 0; j < animsToBeRemoved.size(); ++j)
        m_keyframeAnimations.remove(animsToBeRemoved[j]);
}