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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>
*
* 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.
*/
#ifndef THIRD_PARTY_BLINK_RENDERER_CORE_SVG_SVG_TEXT_CONTENT_ELEMENT_H_
#define THIRD_PARTY_BLINK_RENDERER_CORE_SVG_SVG_TEXT_CONTENT_ELEMENT_H_
#include "third_party/blink/renderer/core/svg/svg_animated_enumeration.h"
#include "third_party/blink/renderer/core/svg/svg_animated_length.h"
#include "third_party/blink/renderer/core/svg/svg_graphics_element.h"
#include "third_party/blink/renderer/platform/heap/handle.h"
namespace blink {
class ExceptionState;
class LineLayoutItem;
class SVGPointTearOff;
enum SVGLengthAdjustType {
kSVGLengthAdjustUnknown,
kSVGLengthAdjustSpacing,
kSVGLengthAdjustSpacingAndGlyphs
};
DECLARE_SVG_ENUM_MAP(SVGLengthAdjustType);
class CORE_EXPORT SVGTextContentElement : public SVGGraphicsElement {
DEFINE_WRAPPERTYPEINFO();
public:
// Forward declare enumerations in the W3C naming scheme, for IDL generation.
enum {
kLengthadjustUnknown = kSVGLengthAdjustUnknown,
kLengthadjustSpacing = kSVGLengthAdjustSpacing,
kLengthadjustSpacingandglyphs = kSVGLengthAdjustSpacingAndGlyphs
};
unsigned getNumberOfChars();
float getComputedTextLength();
float getSubStringLength(unsigned charnum, unsigned nchars, ExceptionState&);
SVGPointTearOff* getStartPositionOfChar(unsigned charnum, ExceptionState&);
SVGPointTearOff* getEndPositionOfChar(unsigned charnum, ExceptionState&);
SVGRectTearOff* getExtentOfChar(unsigned charnum, ExceptionState&);
float getRotationOfChar(unsigned charnum, ExceptionState&);
int getCharNumAtPosition(SVGPointTearOff*, ExceptionState&);
void selectSubString(unsigned charnum, unsigned nchars, ExceptionState&);
static SVGTextContentElement* ElementFromLineLayoutItem(
const LineLayoutItem&);
SVGAnimatedLength* textLength() { return text_length_.Get(); }
bool TextLengthIsSpecifiedByUser() {
return text_length_is_specified_by_user_;
}
SVGAnimatedEnumeration<SVGLengthAdjustType>* lengthAdjust() {
return length_adjust_.Get();
}
void Trace(Visitor*) const override;
protected:
SVGTextContentElement(const QualifiedName&, Document&);
bool IsPresentationAttribute(const QualifiedName&) const final;
void CollectStyleForPresentationAttribute(const QualifiedName&,
const AtomicString&,
MutableCSSPropertyValueSet*) final;
void SvgAttributeChanged(const QualifiedName&) override;
bool SelfHasRelativeLengths() const override;
private:
bool IsTextContent() const final { return true; }
Member<SVGAnimatedLength> text_length_;
bool text_length_is_specified_by_user_;
Member<SVGAnimatedEnumeration<SVGLengthAdjustType>> length_adjust_;
};
inline bool IsSVGTextContentElement(const SVGElement& element) {
return element.IsTextContent();
}
template <>
struct DowncastTraits<SVGTextContentElement> {
static bool AllowFrom(const Node& node) {
auto* svg_element = DynamicTo<SVGElement>(node);
return svg_element && IsSVGTextContentElement(*svg_element);
}
};
} // namespace blink
#endif // THIRD_PARTY_BLINK_RENDERER_CORE_SVG_SVG_TEXT_CONTENT_ELEMENT_H_
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