bool AnimatablePath::usesDefaultInterpolationWith(const AnimatableValue* value) const
{
// Default interpolation is used if the paths have different lengths,
// or the paths have a segment with different types (ignoring "relativeness").
const StylePath* toPath = toAnimatablePath(value)->path();
if (!m_path || !toPath)
return true;
SVGPathByteStreamSource fromSource(path()->byteStream());
SVGPathByteStreamSource toSource(toPath->byteStream());
while (fromSource.hasMoreData()) {
if (!toSource.hasMoreData())
return true;
PathSegmentData fromSeg = fromSource.parseSegment();
PathSegmentData toSeg = toSource.parseSegment();
ASSERT(fromSeg.command != PathSegUnknown);
ASSERT(toSeg.command != PathSegUnknown);
if (toAbsolutePathSegType(fromSeg.command) != toAbsolutePathSegType(toSeg.command))
return true;
}
return toSource.hasMoreData();
}
void SVGPathSegList::calculateAnimatedValue(SVGAnimationElement* animationElement, float percentage, unsigned repeatCount, PassRefPtr<SVGPropertyBase> fromValue, PassRefPtr<SVGPropertyBase> toValue, PassRefPtr<SVGPropertyBase> toAtEndOfDurationValue, SVGElement*)
{
invalidateList();
ASSERT(animationElement);
bool isToAnimation = animationElement->animationMode() == ToAnimation;
const RefPtr<SVGPathSegList> from = toSVGPathSegList(fromValue);
const RefPtr<SVGPathSegList> to = toSVGPathSegList(toValue);
const RefPtr<SVGPathSegList> toAtEndOfDuration = toSVGPathSegList(toAtEndOfDurationValue);
const SVGPathByteStream* toStream = to->byteStream();
const SVGPathByteStream* fromStream = from->byteStream();
OwnPtr<SVGPathByteStream> copy;
// If no 'to' value is given, nothing to animate.
if (!toStream->size())
return;
if (isToAnimation) {
copy = byteStream()->copy();
fromStream = copy.get();
}
// If the 'from' value is given and it's length doesn't match the 'to' value list length, fallback to a discrete animation.
if (fromStream->size() != toStream->size() && fromStream->size()) {
if (percentage < 0.5) {
if (!isToAnimation) {
m_byteStream = fromStream->copy();
return;
}
} else {
m_byteStream = toStream->copy();
return;
}
}
OwnPtr<SVGPathByteStream> lastAnimatedStream = m_byteStream.release();
m_byteStream = SVGPathByteStream::create();
SVGPathByteStreamBuilder builder;
builder.setCurrentByteStream(m_byteStream.get());
SVGPathByteStreamSource fromSource(fromStream);
SVGPathByteStreamSource toSource(toStream);
SVGPathBlender blender;
blender.blendAnimatedPath(percentage, &fromSource, &toSource, &builder);
// Handle additive='sum'.
if (!fromStream->size() || (animationElement->isAdditive() && !isToAnimation))
addToSVGPathByteStream(m_byteStream.get(), lastAnimatedStream.get());
// Handle accumulate='sum'.
if (animationElement->isAccumulated() && repeatCount) {
const SVGPathByteStream* toAtEndOfDurationStream = toAtEndOfDuration->byteStream();
addToSVGPathByteStream(m_byteStream.get(), toAtEndOfDurationStream, repeatCount);
}
}
bool buildAnimatedSVGPathByteStream(const SVGPathByteStream& fromStream, const SVGPathByteStream& toStream, SVGPathByteStream& result, float progress)
{
ASSERT(&toStream != &result);
result.clear();
if (toStream.isEmpty())
return true;
SVGPathByteStreamBuilder builder(result);
SVGPathByteStreamSource fromSource(fromStream);
SVGPathByteStreamSource toSource(toStream);
return SVGPathBlender::blendAnimatedPath(fromSource, toSource, builder, progress);
}
bool addToSVGPathByteStream(SVGPathByteStream& fromStream, const SVGPathByteStream& byStream, unsigned repeatCount)
{
if (fromStream.isEmpty() || byStream.isEmpty())
return true;
OwnPtr<SVGPathByteStream> fromStreamCopy = fromStream.copy();
fromStream.clear();
SVGPathByteStreamBuilder builder(fromStream);
SVGPathByteStreamSource fromSource(*fromStreamCopy);
SVGPathByteStreamSource bySource(byStream);
SVGPathBlender blender(&fromSource, &bySource, &builder);
return blender.addAnimatedPath(repeatCount);
}
PassRefPtr<AnimatableValue> AnimatablePath::interpolateTo(const AnimatableValue* value, double fraction) const
{
if (usesDefaultInterpolationWith(value))
return defaultInterpolateTo(this, value, fraction);
std::unique_ptr<SVGPathByteStream> byteStream = SVGPathByteStream::create();
SVGPathByteStreamBuilder builder(*byteStream);
SVGPathByteStreamSource fromSource(path()->byteStream());
SVGPathByteStreamSource toSource(toAnimatablePath(value)->path()->byteStream());
SVGPathBlender blender(&fromSource, &toSource, &builder);
bool ok = blender.blendAnimatedPath(fraction);
ASSERT_UNUSED(ok, ok);
return AnimatablePath::create(StylePath::create(std::move(byteStream)));
}
bool addToSVGPathByteStream(SVGPathByteStream& streamToAppendTo, const SVGPathByteStream& byStream, unsigned repeatCount)
{
// Why return when streamToAppendTo is empty? Don't we still need to append?
if (streamToAppendTo.isEmpty() || byStream.isEmpty())
return true;
// Is it OK to make the SVGPathByteStreamBuilder from a stream, and then clear that stream?
SVGPathByteStreamBuilder builder(streamToAppendTo);
SVGPathByteStream fromStreamCopy = streamToAppendTo;
streamToAppendTo.clear();
SVGPathByteStreamSource fromSource(fromStreamCopy);
SVGPathByteStreamSource bySource(byStream);
return SVGPathBlender::addAnimatedPath(fromSource, bySource, builder, repeatCount);
}
bool addToSVGPathByteStream(SVGPathByteStream* fromStream, const SVGPathByteStream* byStream, unsigned repeatCount)
{
ASSERT(fromStream);
ASSERT(byStream);
if (fromStream->isEmpty() || byStream->isEmpty())
return true;
SVGPathByteStreamBuilder* builder = globalSVGPathByteStreamBuilder(fromStream);
OwnPtr<SVGPathByteStream> fromStreamCopy = fromStream->copy();
fromStream->clear();
SVGPathByteStreamSource fromSource(fromStreamCopy.get());
SVGPathByteStreamSource bySource(byStream);
SVGPathBlender* blender = globalSVGPathBlender();
bool ok = blender->addAnimatedPath(&fromSource, &bySource, builder, repeatCount);
blender->cleanup();
return ok;
}
void OfflineDataModel::handleUninstallationFinished( int index )
{
emit uninstallationFinished( fromSource( index ) );
}
void OfflineDataModel::handleInstallationFailed( int index, const QString &error )
{
emit installationFailed( fromSource( index ), error );
}
void OfflineDataModel::handleInstallationProgress( int index, qreal progress )
{
emit installationProgressed( fromSource( index ), progress );
}
bool canBlendSVGPathByteStreams(const SVGPathByteStream& fromStream, const SVGPathByteStream& toStream)
{
SVGPathByteStreamSource fromSource(fromStream);
SVGPathByteStreamSource toSource(toStream);
return SVGPathBlender::canBlendPaths(fromSource, toSource);
}
