void SVGAnimatedPathAnimator::addAnimatedTypes(SVGAnimatedType* from, SVGAnimatedType* to)
{
ASSERT(from->type() == AnimatedPath);
ASSERT(from->type() == to->type());
SVGPathByteStream* fromPath = from->path();
SVGPathByteStream* toPath = to->path();
unsigned fromPathSize = fromPath->size();
if (!fromPathSize || fromPathSize != toPath->size())
return;
addToSVGPathByteStream(toPath, fromPath);
}
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);
}
bool buildSVGPathByteStreamFromString(const String& d, SVGPathByteStream& result, PathParsingMode parsingMode)
{
result.clear();
if (d.isEmpty())
return true;
// The string length is typically a minor overestimate of eventual byte stream size, so it avoids us a lot of reallocs.
result.reserveInitialCapacity(d.length());
SVGPathByteStreamBuilder builder(result);
SVGPathStringSource source(d);
SVGPathParser parser(&source, &builder);
bool ok = parser.parsePathDataFromSource(parsingMode);
result.shrinkToFit();
return ok;
}
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 buildStringFromByteStream(const SVGPathByteStream& stream, String& result, PathParsingMode parsingMode)
{
if (stream.isEmpty())
return true;
SVGPathByteStreamSource source(stream);
return SVGPathParser::parseToString(source, result, parsingMode);
}
bool buildSVGPathByteStreamFromString(const String& d, SVGPathByteStream& result, PathParsingMode parsingMode)
{
result.clear();
if (d.isEmpty())
return true;
SVGPathStringSource source(d);
return SVGPathParser::parseToByteStream(source, result, parsingMode);
}
bool buildSVGPathByteStreamFromSVGPathSegList(const SVGPathSegList& list, SVGPathByteStream& result, PathParsingMode parsingMode)
{
result.clear();
if (list.isEmpty())
return true;
SVGPathSegListSource source(list);
return SVGPathParser::parseToByteStream(source, result, parsingMode);
}
bool buildPathFromByteStream(const SVGPathByteStream& stream, Path& result)
{
if (stream.isEmpty())
return true;
SVGPathBuilder builder(result);
SVGPathByteStreamSource source(stream);
return SVGPathParser::parse(source, builder);
}
bool buildSVGPathSegListFromByteStream(const SVGPathByteStream& stream, SVGPathElement& element, SVGPathSegList& result, PathParsingMode parsingMode)
{
if (stream.isEmpty())
return true;
SVGPathSegListBuilder builder(element, result, parsingMode == NormalizedParsing ? PathSegNormalizedRole : PathSegUnalteredRole);
SVGPathByteStreamSource source(stream);
return SVGPathParser::parse(source, builder, parsingMode);
}
bool buildPathFromByteStream(const SVGPathByteStream& stream, Path& result)
{
if (stream.isEmpty())
return true;
SVGPathBuilder builder(result);
SVGPathByteStreamSource source(stream);
SVGPathParser parser(&source, &builder);
return parser.parsePathDataFromSource(NormalizedParsing);
}
FloatPoint getPointAtLengthOfSVGPathByteStream(const SVGPathByteStream& stream, float length)
{
if (stream.isEmpty())
return FloatPoint();
SVGPathTraversalStateBuilder builder(PathTraversalState::TraversalPointAtLength, length);
SVGPathByteStreamSource source(stream);
SVGPathParser parser(&source, &builder);
parser.parsePathDataFromSource(NormalizedParsing);
return builder.currentPoint();
}
float getTotalLengthOfSVGPathByteStream(const SVGPathByteStream& stream)
{
if (stream.isEmpty())
return 0;
SVGPathTraversalStateBuilder builder(PathTraversalState::TraversalTotalLength);
SVGPathByteStreamSource source(stream);
SVGPathParser parser(&source, &builder);
parser.parsePathDataFromSource(NormalizedParsing);
return builder.totalLength();
}
unsigned getSVGPathSegAtLengthFromSVGPathByteStream(const SVGPathByteStream& stream, float length)
{
if (stream.isEmpty())
return 0;
SVGPathTraversalStateBuilder builder(PathTraversalState::TraversalSegmentAtLength, length);
SVGPathByteStreamSource source(stream);
SVGPathParser parser(&source, &builder);
parser.parsePathDataFromSource(NormalizedParsing);
return builder.pathSegmentIndex();
}
bool buildStringFromByteStream(const SVGPathByteStream& stream, String& result, PathParsingMode parsingMode)
{
if (stream.isEmpty())
return true;
SVGPathStringBuilder builder;
SVGPathByteStreamSource source(stream);
SVGPathParser parser(&source, &builder);
bool ok = parser.parsePathDataFromSource(parsingMode);
result = builder.result();
return ok;
}
bool getSVGPathSegAtLengthFromSVGPathByteStream(const SVGPathByteStream& stream, float length, unsigned& pathSeg)
{
if (stream.isEmpty())
return false;
PathTraversalState traversalState(PathTraversalState::Action::SegmentAtLength);
SVGPathTraversalStateBuilder builder(traversalState, length);
SVGPathByteStreamSource source(stream);
bool ok = SVGPathParser::parse(source, builder);
pathSeg = builder.pathSegmentIndex();
return ok;
}
bool getTotalLengthOfSVGPathByteStream(const SVGPathByteStream& stream, float& totalLength)
{
if (stream.isEmpty())
return false;
PathTraversalState traversalState(PathTraversalState::Action::TotalLength);
SVGPathTraversalStateBuilder builder(traversalState);
SVGPathByteStreamSource source(stream);
bool ok = SVGPathParser::parse(source, builder);
totalLength = builder.totalLength();
return ok;
}
bool getPointAtLengthOfSVGPathByteStream(const SVGPathByteStream& stream, float length, SVGPoint& point)
{
if (stream.isEmpty())
return false;
PathTraversalState traversalState(PathTraversalState::Action::VectorAtLength);
SVGPathTraversalStateBuilder builder(traversalState, length);
SVGPathByteStreamSource source(stream);
bool ok = SVGPathParser::parse(source, builder);
point = builder.currentPoint();
return ok;
}
void SVGAnimatedPathAnimator::calculateAnimatedValue(float percentage, unsigned repeatCount, SVGAnimatedType* from, SVGAnimatedType* to, SVGAnimatedType* toAtEndOfDuration, SVGAnimatedType* animated)
{
ASSERT(m_animationElement);
ASSERT(m_contextElement);
SVGPathByteStream* fromPath = from->path();
SVGPathByteStream* toPath = to->path();
SVGPathByteStream* toAtEndOfDurationPath = toAtEndOfDuration->path();
SVGPathByteStream* animatedPath = animated->path();
OwnPtr<SVGPathByteStream> underlyingPath;
bool isToAnimation = m_animationElement->animationMode() == ToAnimation;
if (isToAnimation) {
underlyingPath = animatedPath->copy();
fromPath = underlyingPath.get();
}
// Cache the current animated value before the buildAnimatedSVGPathByteStream() clears animatedPath.
OwnPtr<SVGPathByteStream> lastAnimatedPath;
if (!fromPath->size() || (m_animationElement->isAdditive() && !isToAnimation))
lastAnimatedPath = animatedPath->copy();
// Pass false to 'resizeAnimatedListIfNeeded' here, as the path animation is not a regular Vector<SVGXXX> type, but a SVGPathByteStream, that works differently.
if (!m_animationElement->adjustFromToListValues<SVGPathByteStream>(*fromPath, *toPath, *animatedPath, percentage, false))
return;
buildAnimatedSVGPathByteStream(fromPath, toPath, animatedPath, percentage);
// Handle additive='sum'.
if (lastAnimatedPath)
addToSVGPathByteStream(animatedPath, lastAnimatedPath.get());
// Handle accumulate='sum'.
if (m_animationElement->isAccumulated() && repeatCount)
addToSVGPathByteStream(animatedPath, toAtEndOfDurationPath, repeatCount);
}
bool appendSVGPathByteStreamFromSVGPathSeg(RefPtr<SVGPathSeg>&& pathSeg, SVGPathByteStream& result, PathParsingMode parsingMode)
{
// FIXME: https://bugs.webkit.org/show_bug.cgi?id=15412 - Implement normalized path segment lists!
ASSERT(parsingMode == UnalteredParsing);
SVGPathSegList appendedItemList(PathSegUnalteredRole);
appendedItemList.append(WTFMove(pathSeg));
SVGPathByteStream appendedByteStream;
SVGPathSegListSource source(appendedItemList);
bool ok = SVGPathParser::parseToByteStream(source, result, parsingMode, false);
if (ok)
result.append(appendedByteStream);
return ok;
}
void SVGAnimatedPathAnimator::calculateAnimatedValue(float percentage, unsigned, OwnPtr<SVGAnimatedType>& from, OwnPtr<SVGAnimatedType>& to, OwnPtr<SVGAnimatedType>& animated)
{
ASSERT(m_animationElement);
ASSERT(m_contextElement);
SVGAnimateElement* animationElement = static_cast<SVGAnimateElement*>(m_animationElement);
AnimationMode animationMode = animationElement->animationMode();
SVGPathByteStream* toPath = to->path();
ASSERT(toPath);
SVGPathByteStream* fromPath = from->path();
ASSERT(fromPath);
SVGPathByteStream* animatedPath = animated->path();
ASSERT(animatedPath);
if (animationMode == ToAnimation)
fromPath->initializeFrom(animatedPath);
if (!percentage) {
animatedPath->initializeFrom(fromPath);
return;
}
if (percentage == 1) {
animatedPath->initializeFrom(toPath);
return;
}
OwnPtr<SVGPathByteStream> newAnimatedPath = adoptPtr(animatedPath);
bool success = SVGPathParserFactory::self()->buildAnimatedSVGPathByteStream(fromPath, toPath, newAnimatedPath, percentage);
animatedPath = newAnimatedPath.leakPtr();
if (success)
return;
if ((animationMode == FromToAnimation && percentage > 0.5) || animationMode == ToAnimation)
animatedPath->initializeFrom(toPath);
else
animatedPath->initializeFrom(fromPath);
}