mirror of
https://github.com/darlinghq/darling-WebCore.git
synced 2024-11-23 12:29:39 +00:00
127 lines
4.7 KiB
C++
127 lines
4.7 KiB
C++
/*
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* Copyright (C) 2016 Igalia S.L. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*
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*/
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#include "config.h"
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#include "MathMLFractionElement.h"
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#if ENABLE(MATHML)
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#include "RenderMathMLFraction.h"
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#include "Settings.h"
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#include <wtf/IsoMallocInlines.h>
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namespace WebCore {
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WTF_MAKE_ISO_ALLOCATED_IMPL(MathMLFractionElement);
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using namespace MathMLNames;
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inline MathMLFractionElement::MathMLFractionElement(const QualifiedName& tagName, Document& document)
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: MathMLPresentationElement(tagName, document)
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{
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}
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Ref<MathMLFractionElement> MathMLFractionElement::create(const QualifiedName& tagName, Document& document)
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{
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return adoptRef(*new MathMLFractionElement(tagName, document));
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}
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const MathMLElement::Length& MathMLFractionElement::lineThickness()
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{
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if (m_lineThickness)
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return m_lineThickness.value();
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auto& thickness = attributeWithoutSynchronization(linethicknessAttr);
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if (document().settings().coreMathMLEnabled()) {
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m_lineThickness = parseMathMLLength(thickness);
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return m_lineThickness.value();
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}
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// The MathML3 recommendation states that "medium" is the default thickness.
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// However, it only states that "thin" and "thick" are respectively thiner and thicker.
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// The MathML in HTML5 implementation note suggests 50% and 200% and these values are also used in Gecko.
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m_lineThickness = Length();
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if (equalLettersIgnoringASCIICase(thickness, "thin")) {
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m_lineThickness.value().type = LengthType::UnitLess;
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m_lineThickness.value().value = .5;
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} else if (equalLettersIgnoringASCIICase(thickness, "medium")) {
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m_lineThickness.value().type = LengthType::UnitLess;
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m_lineThickness.value().value = 1;
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} else if (equalLettersIgnoringASCIICase(thickness, "thick")) {
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m_lineThickness.value().type = LengthType::UnitLess;
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m_lineThickness.value().value = 2;
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} else
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m_lineThickness = parseMathMLLength(thickness);
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return m_lineThickness.value();
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}
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MathMLFractionElement::FractionAlignment MathMLFractionElement::cachedFractionAlignment(const QualifiedName& name, Optional<FractionAlignment>& alignment)
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{
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if (alignment)
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return alignment.value();
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auto& value = attributeWithoutSynchronization(name);
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if (equalLettersIgnoringASCIICase(value, "left"))
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alignment = FractionAlignmentLeft;
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else if (equalLettersIgnoringASCIICase(value, "right"))
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alignment = FractionAlignmentRight;
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else
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alignment = FractionAlignmentCenter;
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return alignment.value();
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}
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MathMLFractionElement::FractionAlignment MathMLFractionElement::numeratorAlignment()
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{
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return cachedFractionAlignment(numalignAttr, m_numeratorAlignment);
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}
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MathMLFractionElement::FractionAlignment MathMLFractionElement::denominatorAlignment()
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{
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return cachedFractionAlignment(denomalignAttr, m_denominatorAlignment);
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}
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void MathMLFractionElement::parseAttribute(const QualifiedName& name, const AtomString& value)
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{
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if (name == linethicknessAttr)
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m_lineThickness = WTF::nullopt;
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else if (name == numalignAttr)
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m_numeratorAlignment = WTF::nullopt;
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else if (name == denomalignAttr)
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m_denominatorAlignment = WTF::nullopt;
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MathMLElement::parseAttribute(name, value);
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}
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RenderPtr<RenderElement> MathMLFractionElement::createElementRenderer(RenderStyle&& style, const RenderTreePosition&)
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{
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ASSERT(hasTagName(MathMLNames::mfracTag));
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return createRenderer<RenderMathMLFraction>(*this, WTFMove(style));
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}
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}
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#endif // ENABLE(MATHML)
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