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/*
* Copyright (C) 2020 Apple 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:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. 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.
*
* THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS 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 APPLE INC. OR ITS 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 "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());
// Spec: If the list was empty, then a value of null is returned.
if (m_items.isEmpty())
return nullptr;
if (m_items.size() == 1)
return RefPtr { at(0).ptr() };
auto newItem = SVGTransform::create(concatenate());
clearItems();
auto item = append(WTFMove(newItem));
commitChange();
return RefPtr { item.ptr() };
}
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(WTFMove(*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();
}
}
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