| /* |
| * 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 <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 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; |
| while (buffer.hasCharactersRemaining()) { |
| delimParsed = false; |
| skipOptionalSVGSpaces(buffer); |
| |
| 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(); |
| } |
| |
| } |
| |