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SVGLocatable.cpp
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1/*
2 Copyright (C) 2004, 2005 Nikolas Zimmermann <wildfox@kde.org>
3 2004, 2005, 2006 Rob Buis <buis@kde.org>
4
5 This file is part of the KDE project
6
7 This library is free software; you can redistribute it and/or
8 modify it under the terms of the GNU Library General Public
9 License as published by the Free Software Foundation; either
10 version 2 of the License, or (at your option) any later version.
11
12 This library is distributed in the hope that it will be useful,
13 but WITHOUT ANY WARRANTY; without even the implied warranty of
14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15 Library General Public License for more details.
16
17 You should have received a copy of the GNU Library General Public License
18 along with this library; see the file COPYING.LIB. If not, write to
19 the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
20 Boston, MA 02110-1301, USA.
21*/
22
23#include "config.h"
24#include "wtf/Platform.h"
25
26#if ENABLE(SVG)
27
28#include "SVGLocatable.h"
29
30#include "AffineTransform.h"
31#include "RenderPath.h"
32#include "SVGException.h"
33#include "SVGSVGElement.h"
34
35namespace WebCore {
36
37SVGLocatable::SVGLocatable()
38{
39}
40
41SVGLocatable::~SVGLocatable()
42{
43}
44
45SVGElement* SVGLocatable::nearestViewportElement(const SVGStyledElement* e)
46{
47 Q_UNUSED(e);
48 /*
49 Node* n = e->parentNode();
50 while (n && !n->isDocumentNode()) {
51 if (n->hasTagName(SVGNames::svgTag) || n->hasTagName(SVGNames::symbolTag) ||
52 n->hasTagName(SVGNames::imageTag))
53 return static_cast<SVGElement*>(n);
54#if ENABLE(SVG_FOREIGN_OBJECT)
55 if (n->hasTagName(SVGNames::foreignObjectTag))
56 return static_cast<SVGElement*>(n);
57#endif
58
59 n = n->parentNode();
60 }*/
61
62 return 0;
63}
64
65SVGElement* SVGLocatable::farthestViewportElement(const SVGStyledElement* e)
66{
67 Q_UNUSED(e);
68 // FIXME : likely this will be always the <svg> farthest away.
69 // If we have a different implementation of documentElement(), one
70 // that give the documentElement() of the svg fragment, it could be
71 // used instead. This depends on cdf demands though(Rob.)
72 SVGElement* farthest = 0;
73 /*Node* n = e->parentNode();
74 while (n && !n->isDocumentNode()) {
75 if (n->hasTagName(SVGNames::svgTag) || n->hasTagName(SVGNames::symbolTag) ||
76 n->hasTagName(SVGNames::imageTag))
77 farthest = static_cast<SVGElement*>(n);
78#if ENABLE(SVG_FOREIGN_OBJECT)
79 if (n->hasTagName(SVGNames::foreignObjectTag))
80 farthest = static_cast<SVGElement*>(n);
81#endif
82
83 n = n->parentNode();
84 }*/
85
86 return farthest;
87}
88
89// Spec:
90// http://www.w3.org/TR/2005/WD-SVGMobile12-20050413/svgudom.html#svg::SVGLocatable
91FloatRect SVGLocatable::getBBox(const SVGStyledElement* e)
92{
93 Q_UNUSED(e);
94 FloatRect bboxRect;
95
96 /*if (e && e->renderer()) {
97 // Need this to make sure we have render object dimensions.
98 // See bug 11686.
99 e->document()->updateLayoutIgnorePendingStylesheets();
100 bboxRect = e->renderer()->relativeBBox(false);
101 }*/
102
103 return bboxRect;
104}
105
106AffineTransform SVGLocatable::getCTM(const SVGElement* element)
107{
108 if (!element)
109 return AffineTransform();
110
111 AffineTransform ctm;
112
113 Node* parent = element->parentNode();
114 if (parent && parent->isSVGElement()) {
115 SVGElement* parentElement = static_cast<SVGElement*>(parent);
116 if (parentElement && parentElement->isStyledLocatable()) {
117 AffineTransform parentCTM = static_cast<SVGStyledLocatableElement*>(parentElement)->getCTM();
118 ctm = parentCTM * ctm;
119 }
120 }
121
122 return ctm;
123}
124
125AffineTransform SVGLocatable::getScreenCTM(const SVGElement* element)
126{
127 if (!element)
128 return AffineTransform();
129
130 AffineTransform ctm;
131
132 Node* parent = element->parentNode();
133 if (parent && parent->isSVGElement()) {
134 SVGElement* parentElement = static_cast<SVGElement*>(parent);
135 if (parentElement && parentElement->isStyledLocatable()) {
136 AffineTransform parentCTM = static_cast<SVGStyledLocatableElement*>(parentElement)->getScreenCTM();
137 ctm = parentCTM * ctm;
138 }
139 }
140
141 return ctm;
142}
143
144AffineTransform SVGLocatable::getTransformToElement(SVGElement* target, ExceptionCode& ec) const
145{
146 Q_UNUSED(ec);
147 AffineTransform ctm = getCTM();
148
149 if (target && target->isStyledLocatable()) {
150 AffineTransform targetCTM = static_cast<SVGStyledLocatableElement*>(target)->getCTM();
151 if (!targetCTM.isInvertible()) {
152 //ec = SVGException::SVG_MATRIX_NOT_INVERTABLE;
153 return ctm;
154 }
155 ctm *= targetCTM.inverse();
156 }
157
158 return ctm;
159}
160
161}
162
163#endif // ENABLE(SVG)
164
165// vim:ts=4:noet
AffineTransform.h
SVGException.h
SVGLocatable.h
SVGSVGElement.h
WebCore
Definition: CSSHelper.h:7
khtml::ExceptionCode
unsigned short ExceptionCode
Definition: ExceptionCode.h:37
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