1/*
2 * Copyright (C) 2004, 2005, 2008 Nikolas Zimmermann <zimmermann@kde.org>
3 * Copyright (C) 2004, 2005, 2006, 2008 Rob Buis <buis@kde.org>
4 *
5 * This library is free software; you can redistribute it and/or
6 * modify it under the terms of the GNU Library General Public
7 * License as published by the Free Software Foundation; either
8 * version 2 of the License, or (at your option) any later version.
9 *
10 * This library is distributed in the hope that it will be useful,
11 * but WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
13 * Library General Public License for more details.
14 *
15 * You should have received a copy of the GNU Library General Public License
16 * along with this library; see the file COPYING.LIB.  If not, write to
17 * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
18 * Boston, MA 02110-1301, USA.
19 */
20
21#ifndef SVGTextContentElement_h
22#define SVGTextContentElement_h
23
24#include "core/svg/SVGAnimatedBoolean.h"
25#include "core/svg/SVGAnimatedEnumeration.h"
26#include "core/svg/SVGAnimatedLength.h"
27#include "core/svg/SVGGraphicsElement.h"
28#include "core/svg/SVGPointTearOff.h"
29
30namespace blink {
31
32class ExceptionState;
33
34enum SVGLengthAdjustType {
35    SVGLengthAdjustUnknown,
36    SVGLengthAdjustSpacing,
37    SVGLengthAdjustSpacingAndGlyphs
38};
39template<> const SVGEnumerationStringEntries& getStaticStringEntries<SVGLengthAdjustType>();
40
41class SVGTextContentElement : public SVGGraphicsElement {
42    DEFINE_WRAPPERTYPEINFO();
43public:
44    // Forward declare enumerations in the W3C naming scheme, for IDL generation.
45    enum {
46        LENGTHADJUST_UNKNOWN = SVGLengthAdjustUnknown,
47        LENGTHADJUST_SPACING = SVGLengthAdjustSpacing,
48        LENGTHADJUST_SPACINGANDGLYPHS = SVGLengthAdjustSpacingAndGlyphs
49    };
50
51    unsigned getNumberOfChars();
52    float getComputedTextLength();
53    float getSubStringLength(unsigned charnum, unsigned nchars, ExceptionState&);
54    PassRefPtr<SVGPointTearOff> getStartPositionOfChar(unsigned charnum, ExceptionState&);
55    PassRefPtr<SVGPointTearOff> getEndPositionOfChar(unsigned charnum, ExceptionState&);
56    PassRefPtr<SVGRectTearOff> getExtentOfChar(unsigned charnum, ExceptionState&);
57    float getRotationOfChar(unsigned charnum, ExceptionState&);
58    int getCharNumAtPosition(PassRefPtr<SVGPointTearOff>, ExceptionState&);
59    void selectSubString(unsigned charnum, unsigned nchars, ExceptionState&);
60
61    static SVGTextContentElement* elementFromRenderer(RenderObject*);
62
63    SVGAnimatedLength* textLength() { return m_textLength.get(); }
64    bool textLengthIsSpecifiedByUser() { return m_textLengthIsSpecifiedByUser; }
65    SVGAnimatedEnumeration<SVGLengthAdjustType>* lengthAdjust() { return m_lengthAdjust.get(); }
66
67protected:
68    SVGTextContentElement(const QualifiedName&, Document&);
69
70    bool isSupportedAttribute(const QualifiedName&);
71    virtual void parseAttribute(const QualifiedName&, const AtomicString&) OVERRIDE;
72    virtual bool isPresentationAttribute(const QualifiedName&) const OVERRIDE FINAL;
73    virtual void collectStyleForPresentationAttribute(const QualifiedName&, const AtomicString&, MutableStylePropertySet*) OVERRIDE FINAL;
74    virtual void svgAttributeChanged(const QualifiedName&) OVERRIDE;
75
76    virtual bool selfHasRelativeLengths() const OVERRIDE;
77
78private:
79    virtual bool isTextContent() const OVERRIDE FINAL { return true; }
80
81    RefPtr<SVGAnimatedLength> m_textLength;
82    bool m_textLengthIsSpecifiedByUser;
83    RefPtr<SVGAnimatedEnumeration<SVGLengthAdjustType> > m_lengthAdjust;
84};
85
86inline bool isSVGTextContentElement(const SVGElement& element)
87{
88    return element.isTextContent();
89}
90
91DEFINE_SVGELEMENT_TYPE_CASTS_WITH_FUNCTION(SVGTextContentElement);
92
93} // namespace blink
94
95#endif // SVGTextContentElement_h
96