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
30 namespace WebCore {
31
32 class ExceptionState;
33
34 enum SVGLengthAdjustType {
35 SVGLengthAdjustUnknown,
36 SVGLengthAdjustSpacing,
37 SVGLengthAdjustSpacingAndGlyphs
38 };
39 template<> const SVGEnumerationStringEntries& getStaticStringEntries<SVGLengthAdjustType>();
40
41 class SVGTextContentElement : public SVGGraphicsElement {
42 public:
43 // Forward declare enumerations in the W3C naming scheme, for IDL generation.
44 enum {
45 LENGTHADJUST_UNKNOWN = SVGLengthAdjustUnknown,
46 LENGTHADJUST_SPACING = SVGLengthAdjustSpacing,
47 LENGTHADJUST_SPACINGANDGLYPHS = SVGLengthAdjustSpacingAndGlyphs
48 };
49
50 unsigned getNumberOfChars();
51 float getComputedTextLength();
52 float getSubStringLength(unsigned charnum, unsigned nchars, ExceptionState&);
53 PassRefPtr<SVGPointTearOff> getStartPositionOfChar(unsigned charnum, ExceptionState&);
54 PassRefPtr<SVGPointTearOff> getEndPositionOfChar(unsigned charnum, ExceptionState&);
55 PassRefPtr<SVGRectTearOff> getExtentOfChar(unsigned charnum, ExceptionState&);
56 float getRotationOfChar(unsigned charnum, ExceptionState&);
57 int getCharNumAtPosition(PassRefPtr<SVGPointTearOff>, ExceptionState&);
58 void selectSubString(unsigned charnum, unsigned nchars, ExceptionState&);
59
60 static SVGTextContentElement* elementFromRenderer(RenderObject*);
61
textLength()62 SVGAnimatedLength* textLength() { return m_textLength.get(); }
textLengthIsSpecifiedByUser()63 bool textLengthIsSpecifiedByUser() { return m_textLengthIsSpecifiedByUser; }
lengthAdjust()64 SVGAnimatedEnumeration<SVGLengthAdjustType>* lengthAdjust() { return m_lengthAdjust.get(); }
65
66 protected:
67 SVGTextContentElement(const QualifiedName&, Document&);
68
69 bool isSupportedAttribute(const QualifiedName&);
70 virtual void parseAttribute(const QualifiedName&, const AtomicString&) OVERRIDE;
71 virtual bool isPresentationAttribute(const QualifiedName&) const OVERRIDE FINAL;
72 virtual void collectStyleForPresentationAttribute(const QualifiedName&, const AtomicString&, MutableStylePropertySet*) OVERRIDE FINAL;
73 virtual void svgAttributeChanged(const QualifiedName&) OVERRIDE;
74
75 virtual bool selfHasRelativeLengths() const OVERRIDE;
76
77 private:
isTextContent()78 virtual bool isTextContent() const OVERRIDE FINAL { return true; }
79
80 RefPtr<SVGAnimatedLength> m_textLength;
81 bool m_textLengthIsSpecifiedByUser;
82 RefPtr<SVGAnimatedEnumeration<SVGLengthAdjustType> > m_lengthAdjust;
83 };
84
isSVGTextContentElement(const Node & node)85 inline bool isSVGTextContentElement(const Node& node)
86 {
87 return node.isSVGElement() && toSVGElement(node).isTextContent();
88 }
89
90 DEFINE_ELEMENT_TYPE_CASTS_WITH_FUNCTION(SVGTextContentElement);
91
92 } // namespace WebCore
93
94 #endif
95