/* * Copyright (C) 2018 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. */ #pragma once #include "Length.h" #include <wtf/text/TextStream.h> namespace WebCore { class TextUnderlineOffset { public: static TextUnderlineOffset createWithAuto() { return TextUnderlineOffset(Type::Auto); } static TextUnderlineOffset createWithLength(float length) { TextUnderlineOffset result(Type::Length); result.setLengthValue(length); return result; } bool isAuto() const { return !isLength(); } bool isLength() const { return static_cast<bool>(m_length); } void setLengthValue(float length) { ASSERT(isLength()); m_length = length; } float lengthValue() const { ASSERT(isLength()); return *m_length; } float lengthOr(float defaultValue) const { return m_length.valueOr(defaultValue); } bool operator==(const TextUnderlineOffset& other) const { return m_length == other.m_length; } bool operator!=(const TextUnderlineOffset& other) const { return !(*this == other); } private: enum class Type { Auto, Length }; TextUnderlineOffset(Type type) { if (type == Type::Length) m_length = 0; } Optional<float> m_length; }; inline TextStream& operator<<(TextStream& ts, const TextUnderlineOffset& offset) { if (offset.isAuto()) ts << "auto"; else ts << TextStream::FormatNumberRespectingIntegers(offset.lengthValue()); return ts; } } // namespace WebCore