Remove Animations and Transitions.

sky/engine/core/animation/KeyframeEffectModel.cpp

-/*
- * Copyright (C) 2013 Google Inc. All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions are
- * met:
- *
- *     * Redistributions of source code must retain the above copyright
- * notice, this list of conditions and the following disclaimer.
- *     * Redistributions in binary form must reproduce the above
- * copyright notice, this list of conditions and the following disclaimer
- * in the documentation and/or other materials provided with the
- * distribution.
- *     * Neither the name of Google Inc. nor the names of its
- * contributors may be used to endorse or promote products derived from
- * this software without specific prior written permission.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
- * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
- * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
- * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
- * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
- * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
- * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
- * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
- * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
- * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
- * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- */
-
-#include "sky/engine/core/animation/KeyframeEffectModel.h"
-
-#include "gen/sky/core/StylePropertyShorthand.h"
-#include "sky/engine/core/animation/AnimationNode.h"
-#include "sky/engine/platform/geometry/FloatBox.h"
-#include "sky/engine/platform/transforms/TransformationMatrix.h"
-#include "sky/engine/wtf/text/StringHash.h"
-
-namespace blink {
-
-PropertySet KeyframeEffectModelBase::properties() const
-{
-    PropertySet result;
-    if (!m_keyframes.size()) {
-        return result;
-    }
-    result = m_keyframes[0]->properties();
-    for (size_t i = 1; i < m_keyframes.size(); i++) {
-        PropertySet extras = m_keyframes[i]->properties();
-        for (PropertySet::const_iterator it = extras.begin(); it != extras.end(); ++it) {
-            result.add(*it);
-        }
-    }
-    return result;
-}
-
-PassOwnPtr<Vector<RefPtr<Interpolation> > > KeyframeEffectModelBase::sample(int iteration, double fraction, double iterationDuration) const
-{
-    ASSERT(iteration >= 0);
-    ASSERT(!isNull(fraction));
-    ensureKeyframeGroups();
-    ensureInterpolationEffect();
-
-    return m_interpolationEffect->getActiveInterpolations(fraction, iterationDuration);
-}
-
-KeyframeEffectModelBase::KeyframeVector KeyframeEffectModelBase::normalizedKeyframes(const KeyframeVector& keyframes)
-{
-    double lastOffset = 0;
-    KeyframeVector result;
-    result.reserveCapacity(keyframes.size());
-
-    for (size_t i = 0; i < keyframes.size(); ++i) {
-        double offset = keyframes[i]->offset();
-        if (!isNull(offset)) {
-            ASSERT(offset >= 0);
-            ASSERT(offset <= 1);
-            ASSERT(offset >= lastOffset);
-            lastOffset = offset;
-        }
-        result.append(keyframes[i]->clone());
-    }
-
-    if (result.isEmpty()) {
-        return result;
-    }
-
-    if (isNull(result.last()->offset()))
-        result.last()->setOffset(1);
-
-    if (result.size() > 1 && isNull(result[0]->offset()))
-        result[0]->setOffset(0);
-
-    size_t lastIndex = 0;
-    lastOffset = result[0]->offset();
-    for (size_t i = 1; i < result.size(); ++i) {
-        double offset = result[i]->offset();
-        if (!isNull(offset)) {
-            for (size_t j = 1; j < i - lastIndex; ++j)
-                result[lastIndex + j]->setOffset(lastOffset + (offset - lastOffset) * j / (i - lastIndex));
-            lastIndex = i;
-            lastOffset = offset;
-        }
-    }
-
-    return result;
-}
-
-
-void KeyframeEffectModelBase::ensureKeyframeGroups() const
-{
-    if (m_keyframeGroups)
-        return;
-
-    m_keyframeGroups = adoptPtr(new KeyframeGroupMap);
-    const KeyframeVector keyframes = normalizedKeyframes(getFrames());
-    for (KeyframeVector::const_iterator keyframeIter = keyframes.begin(); keyframeIter != keyframes.end(); ++keyframeIter) {
-        const Keyframe* keyframe = keyframeIter->get();
-        PropertySet keyframeProperties = keyframe->properties();
-        for (PropertySet::const_iterator propertyIter = keyframeProperties.begin(); propertyIter != keyframeProperties.end(); ++propertyIter) {
-            CSSPropertyID property = *propertyIter;
-            ASSERT_WITH_MESSAGE(!isExpandedShorthand(property), "Web Animations: Encountered shorthand CSS property (%d) in normalized keyframes.", property);
-            KeyframeGroupMap::iterator groupIter = m_keyframeGroups->find(property);
-            PropertySpecificKeyframeGroup* group;
-            if (groupIter == m_keyframeGroups->end())
-                group = m_keyframeGroups->add(property, adoptPtr(new PropertySpecificKeyframeGroup)).storedValue->value.get();
-            else
-                group = groupIter->value.get();
-
-            group->appendKeyframe(keyframe->createPropertySpecificKeyframe(property));
-        }
-    }
-
-    // Add synthetic keyframes.
-    for (KeyframeGroupMap::iterator iter = m_keyframeGroups->begin(); iter != m_keyframeGroups->end(); ++iter) {
-        iter->value->addSyntheticKeyframeIfRequired(this);
-        iter->value->removeRedundantKeyframes();
-    }
-}
-
-void KeyframeEffectModelBase::ensureInterpolationEffect(Element* element) const
-{
-    if (m_interpolationEffect)
-        return;
-    m_interpolationEffect = InterpolationEffect::create();
-
-    for (KeyframeGroupMap::const_iterator iter = m_keyframeGroups->begin(); iter != m_keyframeGroups->end(); ++iter) {
-        const PropertySpecificKeyframeVector& keyframes = iter->value->keyframes();
-        ASSERT(keyframes[0]->composite() == AnimationEffect::CompositeReplace);
-        for (size_t i = 0; i < keyframes.size() - 1; i++) {
-            ASSERT(keyframes[i + 1]->composite() == AnimationEffect::CompositeReplace);
-            double applyFrom = i ? keyframes[i]->offset() : (-std::numeric_limits<double>::infinity());
-            double applyTo = i == keyframes.size() - 2 ? std::numeric_limits<double>::infinity() : keyframes[i + 1]->offset();
-            if (applyTo == 1)
-                applyTo = std::numeric_limits<double>::infinity();
-
-            m_interpolationEffect->addInterpolation(keyframes[i]->createInterpolation(iter->key, keyframes[i + 1].get(), element),
-                &keyframes[i]->easing(), keyframes[i]->offset(), keyframes[i + 1]->offset(), applyFrom, applyTo);
-        }
-    }
-}
-
-bool KeyframeEffectModelBase::isReplaceOnly()
-{
-    ensureKeyframeGroups();
-    for (KeyframeGroupMap::iterator iter = m_keyframeGroups->begin(); iter != m_keyframeGroups->end(); ++iter) {
-        const PropertySpecificKeyframeVector& keyframeVector = iter->value->keyframes();
-        for (size_t i = 0; i < keyframeVector.size(); ++i) {
-            if (keyframeVector[i]->composite() != AnimationEffect::CompositeReplace)
-                return false;
-        }
-    }
-    return true;
-}
-
-Keyframe::PropertySpecificKeyframe::PropertySpecificKeyframe(double offset, PassRefPtr<TimingFunction> easing, AnimationEffect::CompositeOperation composite)
-    : m_offset(offset)
-    , m_easing(easing)
-    , m_composite(composite)
-{
-}
-
-void KeyframeEffectModelBase::PropertySpecificKeyframeGroup::appendKeyframe(PassOwnPtr<Keyframe::PropertySpecificKeyframe> keyframe)
-{
-    ASSERT(m_keyframes.isEmpty() || m_keyframes.last()->offset() <= keyframe->offset());
-    m_keyframes.append(keyframe);
-}
-
-void KeyframeEffectModelBase::PropertySpecificKeyframeGroup::removeRedundantKeyframes()
-{
-    // As an optimization, removes keyframes in the following categories, as
-    // they will never be used by sample().
-    // - End keyframes with the same offset as their neighbor
-    // - Interior keyframes with the same offset as both their neighbors
-    // Note that synthetic keyframes must be added before this method is
-    // called.
-    ASSERT(m_keyframes.size() >= 2);
-    for (int i = m_keyframes.size() - 1; i >= 0; --i) {
-        double offset = m_keyframes[i]->offset();
-        bool hasSameOffsetAsPreviousNeighbor = !i || m_keyframes[i - 1]->offset() == offset;
-        bool hasSameOffsetAsNextNeighbor = i == static_cast<int>(m_keyframes.size() - 1) || m_keyframes[i + 1]->offset() == offset;
-        if (hasSameOffsetAsPreviousNeighbor && hasSameOffsetAsNextNeighbor)
-            m_keyframes.remove(i);
-    }
-    ASSERT(m_keyframes.size() >= 2);
-}
-
-void KeyframeEffectModelBase::PropertySpecificKeyframeGroup::addSyntheticKeyframeIfRequired(const KeyframeEffectModelBase* context)
-{
-    ASSERT(!m_keyframes.isEmpty());
-    if (m_keyframes.first()->offset() != 0.0)
-        m_keyframes.insert(0, m_keyframes.first()->neutralKeyframe(0, nullptr));
-    if (m_keyframes.last()->offset() != 1.0)
-        appendKeyframe(m_keyframes.last()->neutralKeyframe(1, nullptr));
-}
-
-} // namespace