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/*
* Copyright (C) 2004, 2005, 2008 Nikolas Zimmermann <zimmermann@kde.org>
* Copyright (C) 2004, 2005, 2006, 2008 Rob Buis <buis@kde.org>
* Copyright (C) 2018-2019 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 "SVGGraphicsElement.h"
#include <wtf/TZoneMalloc.h>
namespace WebCore {
struct DOMPointInit;
enum SVGLengthAdjustType {
SVGLengthAdjustUnknown,
SVGLengthAdjustSpacing,
SVGLengthAdjustSpacingAndGlyphs
};
template<> struct SVGPropertyTraits<SVGLengthAdjustType> {
static unsigned highestEnumValue() { return SVGLengthAdjustSpacingAndGlyphs; }
static String toString(SVGLengthAdjustType type)
{
switch (type) {
case SVGLengthAdjustUnknown:
return emptyString();
case SVGLengthAdjustSpacing:
return "spacing"_s;
case SVGLengthAdjustSpacingAndGlyphs:
return "spacingAndGlyphs"_s;
}
ASSERT_NOT_REACHED();
return emptyString();
}
static SVGLengthAdjustType fromString(const String& value)
{
if (value == "spacingAndGlyphs"_s)
return SVGLengthAdjustSpacingAndGlyphs;
if (value == "spacing"_s)
return SVGLengthAdjustSpacing;
return SVGLengthAdjustUnknown;
}
};
class SVGTextContentElement : public SVGGraphicsElement {
WTF_MAKE_TZONE_OR_ISO_ALLOCATED(SVGTextContentElement);
WTF_OVERRIDE_DELETE_FOR_CHECKED_PTR(SVGTextContentElement);
public:
enum {
LENGTHADJUST_UNKNOWN = SVGLengthAdjustUnknown,
LENGTHADJUST_SPACING = SVGLengthAdjustSpacing,
LENGTHADJUST_SPACINGANDGLYPHS = SVGLengthAdjustSpacingAndGlyphs
};
unsigned getNumberOfChars();
float getComputedTextLength();
ExceptionOr<float> getSubStringLength(unsigned charnum, unsigned nchars);
ExceptionOr<Ref<SVGPoint>> getStartPositionOfChar(unsigned charnum);
ExceptionOr<Ref<SVGPoint>> getEndPositionOfChar(unsigned charnum);
ExceptionOr<Ref<SVGRect>> getExtentOfChar(unsigned charnum);
ExceptionOr<float> getRotationOfChar(unsigned charnum);
int getCharNumAtPosition(DOMPointInit&&);
ExceptionOr<void> selectSubString(unsigned charnum, unsigned nchars);
static const SVGTextContentElement* elementFromRenderer(const RenderObject*);
using PropertyRegistry = SVGPropertyOwnerRegistry<SVGTextContentElement, SVGGraphicsElement>;
const SVGLengthValue& specifiedTextLength() const { return m_specifiedTextLength; }
const SVGLengthValue& textLength() const { return m_textLength->currentValue(); }
SVGLengthAdjustType lengthAdjust() const { return m_lengthAdjust->currentValue<SVGLengthAdjustType>(); }
SVGAnimatedLength& textLengthAnimated();
SVGAnimatedEnumeration& lengthAdjustAnimated() { return m_lengthAdjust; }
protected:
SVGTextContentElement(const QualifiedName&, Document&, UniqueRef<SVGPropertyRegistry>&&);
bool isValid() const override { return SVGTests::isValid(); }
void attributeChanged(const QualifiedName&, const AtomString& oldValue, const AtomString& newValue, AttributeModificationReason) override;
bool hasPresentationalHintsForAttribute(const QualifiedName&) const override;
void collectPresentationalHintsForAttribute(const QualifiedName&, const AtomString&, MutableStyleProperties&) override;
void svgAttributeChanged(const QualifiedName&) override;
bool selfHasRelativeLengths() const override;
private:
bool isTextContent() const final { return true; }
Ref<SVGAnimatedLength> m_textLength { SVGAnimatedLength::create(this, SVGLengthMode::Other) };
Ref<SVGAnimatedEnumeration> m_lengthAdjust { SVGAnimatedEnumeration::create(this, SVGLengthAdjustSpacing) };
SVGLengthValue m_specifiedTextLength { SVGLengthMode::Other };
};
} // namespace WebCore
SPECIALIZE_TYPE_TRAITS_BEGIN(WebCore::SVGTextContentElement)
static bool isType(const WebCore::SVGElement& element) { return element.isTextContent(); }
static bool isType(const WebCore::Node& node)
{
auto* svgElement = dynamicDowncast<WebCore::SVGElement>(node);
return svgElement && isType(*svgElement);
}
SPECIALIZE_TYPE_TRAITS_END()
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