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/*
* Copyright (C) 2004, 2005, 2006, 2008 Nikolas Zimmermann <zimmermann@kde.org>
* Copyright (C) 2004, 2005, 2006 Rob Buis <buis@kde.org>
* Copyright (C) 2019 Apple Inc. All rights reserved.
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Library General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Library General Public License for more details.
*
* You should have received a copy of the GNU Library General Public License
* along with this library; see the file COPYING.LIB. If not, write to
* the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
* Boston, MA 02110-1301, USA.
*/
#pragma once
#include "ExceptionOr.h"
#include "SVGParsingError.h"
#include "SVGPropertyTraits.h"
namespace WebCore {
class CSSPrimitiveValue;
class Element;
class SVGLengthContext;
enum class SVGLengthType : uint8_t {
Unknown = 0,
Number,
Percentage,
Ems,
Exs,
Pixels,
Centimeters,
Millimeters,
Inches,
Points,
Picas
};
enum class SVGLengthMode : uint8_t {
Width,
Height,
Other
};
enum class SVGLengthNegativeValuesMode : uint8_t {
Allow,
Forbid
};
enum class ShouldConvertNumberToPxLength : bool { No, Yes };
class SVGLengthValue {
WTF_MAKE_FAST_ALLOCATED;
public:
SVGLengthValue(SVGLengthMode = SVGLengthMode::Other, const String& valueAsString = { });
SVGLengthValue(float valueInSpecifiedUnits, SVGLengthType, SVGLengthMode = SVGLengthMode::Other);
SVGLengthValue(const SVGLengthContext&, float, SVGLengthType = SVGLengthType::Number, SVGLengthMode = SVGLengthMode::Other);
static std::optional<SVGLengthValue> construct(SVGLengthMode, StringView);
static SVGLengthValue construct(SVGLengthMode, StringView, SVGParsingError&, SVGLengthNegativeValuesMode = SVGLengthNegativeValuesMode::Allow);
static SVGLengthValue blend(const SVGLengthValue& from, const SVGLengthValue& to, float progress);
static SVGLengthValue fromCSSPrimitiveValue(const CSSPrimitiveValue&, const CSSToLengthConversionData&, ShouldConvertNumberToPxLength = ShouldConvertNumberToPxLength::No);
Ref<CSSPrimitiveValue> toCSSPrimitiveValue(const Element* = nullptr) const;
SVGLengthType lengthType() const { return m_lengthType; }
SVGLengthMode lengthMode() const { return m_lengthMode; }
bool isZero() const { return !m_valueInSpecifiedUnits; }
bool isRelative() const { return m_lengthType == SVGLengthType::Percentage || m_lengthType == SVGLengthType::Ems || m_lengthType == SVGLengthType::Exs; }
float value(const SVGLengthContext&) const;
float valueAsPercentage() const { return m_lengthType == SVGLengthType::Percentage ? m_valueInSpecifiedUnits / 100 : m_valueInSpecifiedUnits; }
float valueInSpecifiedUnits() const { return m_valueInSpecifiedUnits; }
String valueAsString() const;
AtomString valueAsAtomString() const;
ExceptionOr<float> valueForBindings(const SVGLengthContext&) const;
void setValueInSpecifiedUnits(float value) { m_valueInSpecifiedUnits = value; }
ExceptionOr<void> setValue(const SVGLengthContext&, float);
ExceptionOr<void> setValue(const SVGLengthContext&, float, SVGLengthType, SVGLengthMode);
ExceptionOr<void> setValueAsString(StringView);
ExceptionOr<void> setValueAsString(StringView, SVGLengthMode);
ExceptionOr<void> convertToSpecifiedUnits(const SVGLengthContext&, SVGLengthType);
private:
float m_valueInSpecifiedUnits { 0 };
SVGLengthType m_lengthType { SVGLengthType::Number };
SVGLengthMode m_lengthMode { SVGLengthMode::Other };
};
inline bool operator==(const SVGLengthValue& a, const SVGLengthValue& b)
{
return a.valueInSpecifiedUnits() == b.valueInSpecifiedUnits() && a.lengthType() == b.lengthType() && a.lengthMode() == b.lengthMode();
}
WTF::TextStream& operator<<(WTF::TextStream&, const SVGLengthValue&);
} // namespace WebCore
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