SVGTransformList.cpp [plain text]
#include "config.h"
#include "SVGTransformList.h"
#include "SVGParserUtilities.h"
#include <wtf/text/StringBuilder.h>
#include <wtf/text/StringParsingBuffer.h>
namespace WebCore {
ExceptionOr<RefPtr<SVGTransform>> SVGTransformList::consolidate()
{
auto result = canAlterList();
if (result.hasException())
return result.releaseException();
ASSERT(result.releaseReturnValue());
if (m_items.isEmpty())
return nullptr;
if (m_items.size() == 1)
return makeRefPtr(at(0).get());
auto newItem = SVGTransform::create(concatenate());
clearItems();
auto item = append(WTFMove(newItem));
commitChange();
return makeRefPtr(item.get());
}
AffineTransform SVGTransformList::concatenate() const
{
AffineTransform result;
for (auto& transform : m_items)
result *= transform->matrix()->value();
return result;
}
template<typename CharacterType> bool SVGTransformList::parseGeneric(StringParsingBuffer<CharacterType>& buffer)
{
bool delimParsed = false;
skipOptionalSVGSpaces(buffer);
while (buffer.hasCharactersRemaining()) {
delimParsed = false;
auto parsedTransformType = SVGTransformable::parseTransformType(buffer);
if (!parsedTransformType)
return false;
auto parsedTransformValue = SVGTransformable::parseTransformValue(*parsedTransformType, buffer);
if (!parsedTransformValue)
return false;
append(SVGTransform::create(*parsedTransformValue));
skipOptionalSVGSpaces(buffer);
if (skipExactly(buffer, ','))
delimParsed = true;
skipOptionalSVGSpaces(buffer);
}
return !delimParsed;
}
void SVGTransformList::parse(StringView value)
{
clearItems();
bool parsingSucceeded = readCharactersForParsing(value, [&](auto buffer) {
return parseGeneric(buffer);
});
if (!parsingSucceeded)
clearItems();
}
bool SVGTransformList::parse(StringParsingBuffer<LChar>& buffer)
{
return parseGeneric(buffer);
}
bool SVGTransformList::parse(StringParsingBuffer<UChar>& buffer)
{
return parseGeneric(buffer);
}
String SVGTransformList::valueAsString() const
{
StringBuilder builder;
for (const auto& transfrom : m_items) {
if (builder.length())
builder.append(' ');
builder.append(transfrom->value().valueAsString());
}
return builder.toString();
}
}