bool getSVGPathSegAtLengthFromSVGPathByteStream(const SVGPathByteStream* stream, float length, unsigned& pathSeg)
{
ASSERT(stream);
if (stream->isEmpty())
return false;
PathTraversalState traversalState(PathTraversalState::TraversalSegmentAtLength);
SVGPathTraversalStateBuilder* builder = globalSVGPathTraversalStateBuilder(traversalState, length);
SVGPathByteStreamSource source(stream);
SVGPathParser* parser = globalSVGPathParser(&source, builder);
bool ok = parser->parsePathDataFromSource(NormalizedParsing);
pathSeg = builder->pathSegmentIndex();
parser->cleanup();
return ok;
}
bool SVGPathParserFactory::buildSVGPathByteStreamFromString(const String& d, OwnPtr<SVGPathByteStream>& result, PathParsingMode parsingMode)
{
if (result)
result->clear();
else
result = SVGPathByteStream::create();
if (d.isEmpty())
return false;
SVGPathByteStreamBuilder* builder = globalSVGPathByteStreamBuilder(result.get());
OwnPtr<SVGPathStringSource> source = SVGPathStringSource::create(d);
SVGPathParser* parser = globalSVGPathParser(source.get(), builder);
bool ok = parser->parsePathDataFromSource(parsingMode);
parser->cleanup();
return ok;
}
bool appendSVGPathByteStreamFromSVGPathSeg(PassRefPtr<SVGPathSeg> pathSeg, SVGPathByteStream* result, PathParsingMode parsingMode)
{
ASSERT(result);
// FIXME: https://bugs.webkit.org/show_bug.cgi?id=15412 - Implement normalized path segment lists!
ASSERT(parsingMode == UnalteredParsing);
SVGPathSegList appendedItemList(PathSegUnalteredRole);
appendedItemList.append(pathSeg);
auto appendedByteStream = std::make_unique<SVGPathByteStream>();
SVGPathByteStreamBuilder* builder = globalSVGPathByteStreamBuilder(appendedByteStream.get());
auto source = std::make_unique<SVGPathSegListSource>(appendedItemList);
SVGPathParser* parser = globalSVGPathParser(source.get(), builder);
bool ok = parser->parsePathDataFromSource(parsingMode, false);
parser->cleanup();
if (ok)
result->append(appendedByteStream.get());
return ok;
}
bool buildSVGPathByteStreamFromString(const String& d, SVGPathByteStream* result, PathParsingMode parsingMode)
{
ASSERT(result);
result->clear();
if (d.isEmpty())
return false;
// 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 = globalSVGPathByteStreamBuilder(result);
OwnPtr<SVGPathStringSource> source = SVGPathStringSource::create(d);
SVGPathParser* parser = globalSVGPathParser(source.get(), builder);
bool ok = parser->parsePathDataFromSource(parsingMode);
parser->cleanup();
result->shrinkToFit();
return ok;
}
