/* * Copyright (C) 2016 Igalia S.L. 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 THE COPYRIGHT HOLDERS AND 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 THE COPYRIGHT * OWNER OR 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 "MathMLFractionElement.h" #if ENABLE(MATHML) #include "RenderMathMLFraction.h" namespace WebCore { using namespace MathMLNames; inline MathMLFractionElement::MathMLFractionElement(const QualifiedName& tagName, Document& document) : MathMLPresentationElement(tagName, document) { } Ref MathMLFractionElement::create(const QualifiedName& tagName, Document& document) { return adoptRef(*new MathMLFractionElement(tagName, document)); } const MathMLElement::Length& MathMLFractionElement::lineThickness() { if (m_lineThickness) return m_lineThickness.value(); // The MathML3 recommendation states that "medium" is the default thickness. // However, it only states that "thin" and "thick" are respectively thiner and thicker. // The MathML in HTML5 implementation note suggests 50% and 200% and these values are also used in Gecko. auto& thickness = attributeWithoutSynchronization(linethicknessAttr); m_lineThickness = Length(); if (equalLettersIgnoringASCIICase(thickness, "thin")) { m_lineThickness.value().type = LengthType::UnitLess; m_lineThickness.value().value = .5; } else if (equalLettersIgnoringASCIICase(thickness, "medium")) { m_lineThickness.value().type = LengthType::UnitLess; m_lineThickness.value().value = 1; } else if (equalLettersIgnoringASCIICase(thickness, "thick")) { m_lineThickness.value().type = LengthType::UnitLess; m_lineThickness.value().value = 2; } else m_lineThickness = parseMathMLLength(thickness); return m_lineThickness.value(); } MathMLFractionElement::FractionAlignment MathMLFractionElement::cachedFractionAlignment(const QualifiedName& name, std::optional& alignment) { if (alignment) return alignment.value(); auto& value = attributeWithoutSynchronization(name); if (equalLettersIgnoringASCIICase(value, "left")) alignment = FractionAlignmentLeft; else if (equalLettersIgnoringASCIICase(value, "right")) alignment = FractionAlignmentRight; else alignment = FractionAlignmentCenter; return alignment.value(); } MathMLFractionElement::FractionAlignment MathMLFractionElement::numeratorAlignment() { return cachedFractionAlignment(numalignAttr, m_numeratorAlignment); } MathMLFractionElement::FractionAlignment MathMLFractionElement::denominatorAlignment() { return cachedFractionAlignment(denomalignAttr, m_denominatorAlignment); } void MathMLFractionElement::parseAttribute(const QualifiedName& name, const AtomicString& value) { if (name == linethicknessAttr) m_lineThickness = std::nullopt; else if (name == numalignAttr) m_numeratorAlignment = std::nullopt; else if (name == denomalignAttr) m_denominatorAlignment = std::nullopt; MathMLElement::parseAttribute(name, value); } RenderPtr MathMLFractionElement::createElementRenderer(RenderStyle&& style, const RenderTreePosition&) { ASSERT(hasTagName(MathMLNames::mfracTag)); return createRenderer(*this, WTFMove(style)); } } #endif // ENABLE(MATHML)