1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
|
/*
Copyright (C) 2007 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.
*/
#include "config.h"
#if ENABLE(SVG)
#include "SVGViewSpec.h"
#include "Document.h"
#include "PlatformString.h"
#include "SVGParserUtilities.h"
#include "SVGPreserveAspectRatio.h"
#include "SVGSVGElement.h"
#include "SVGTransformList.h"
#include "SVGTransformable.h"
namespace WebCore {
SVGViewSpec::SVGViewSpec(const SVGSVGElement* contextElement)
: SVGFitToViewBox()
, SVGZoomAndPan()
, m_contextElement(contextElement)
, m_transform(SVGTransformList::create(SVGNames::transformAttr))
{
}
SVGViewSpec::~SVGViewSpec()
{
}
void SVGViewSpec::setTransform(const String& transform)
{
SVGTransformable::parseTransformAttribute(m_transform.get(), transform);
}
void SVGViewSpec::setViewBoxString(const String& viewBox)
{
float x, y, w, h;
const UChar* c = viewBox.characters();
const UChar* end = c + viewBox.length();
if (!parseViewBox(m_contextElement->document(), c, end, x, y, w, h, false))
return;
setViewBoxBaseValue(FloatRect(x, y, w, h));
}
void SVGViewSpec::setPreserveAspectRatioString(const String& preserve)
{
SVGPreserveAspectRatio::parsePreserveAspectRatio(this, preserve);
}
void SVGViewSpec::setViewTargetString(const String& viewTargetString)
{
m_viewTargetString = viewTargetString;
}
SVGElement* SVGViewSpec::viewTarget() const
{
return static_cast<SVGElement*>(m_contextElement->document()->getElementById(m_viewTargetString));
}
static const UChar svgViewSpec[] = {'s', 'v', 'g', 'V', 'i', 'e', 'w'};
static const UChar viewBoxSpec[] = {'v', 'i', 'e', 'w', 'B', 'o', 'x'};
static const UChar preserveAspectRatioSpec[] = {'p', 'r', 'e', 's', 'e', 'r', 'v', 'e', 'A', 's', 'p', 'e', 'c', 't', 'R', 'a', 't', 'i', 'o'};
static const UChar transformSpec[] = {'t', 'r', 'a', 'n', 's', 'f', 'o', 'r', 'm'};
static const UChar zoomAndPanSpec[] = {'z', 'o', 'o', 'm', 'A', 'n', 'd', 'P', 'a', 'n'};
static const UChar viewTargetSpec[] = {'v', 'i', 'e', 'w', 'T', 'a', 'r', 'g', 'e', 't'};
bool SVGViewSpec::parseViewSpec(const String& viewSpec)
{
const UChar* currViewSpec = viewSpec.characters();
const UChar* end = currViewSpec + viewSpec.length();
if (currViewSpec >= end)
return false;
if (!skipString(currViewSpec, end, svgViewSpec, sizeof(svgViewSpec) / sizeof(UChar)))
return false;
if (currViewSpec >= end || *currViewSpec != '(' )
return false;
currViewSpec++;
while (currViewSpec < end && *currViewSpec != ')') {
if (*currViewSpec == 'v') {
if (skipString(currViewSpec, end, viewBoxSpec, sizeof(viewBoxSpec) / sizeof(UChar))) {
if (currViewSpec >= end || *currViewSpec != '(')
return false;
currViewSpec++;
float x, y, w, h;
if (!parseViewBox(m_contextElement->document(), currViewSpec, end, x, y, w, h, false))
return false;
setViewBoxBaseValue(FloatRect(x, y, w, h));
if (currViewSpec >= end || *currViewSpec != ')')
return false;
currViewSpec++;
} else if (skipString(currViewSpec, end, viewTargetSpec, sizeof(viewTargetSpec) / sizeof(UChar))) {
if (currViewSpec >= end || *currViewSpec != '(')
return false;
const UChar* viewTargetStart = ++currViewSpec;
while (currViewSpec < end && *currViewSpec != ')')
currViewSpec++;
if (currViewSpec >= end)
return false;
setViewTargetString(String(viewTargetStart, currViewSpec - viewTargetStart));
currViewSpec++;
} else
return false;
} else if (*currViewSpec == 'z') {
if (!skipString(currViewSpec, end, zoomAndPanSpec, sizeof(zoomAndPanSpec) / sizeof(UChar)))
return false;
if (currViewSpec >= end || *currViewSpec != '(')
return false;
currViewSpec++;
if (!parseZoomAndPan(currViewSpec, end))
return false;
if (currViewSpec >= end || *currViewSpec != ')')
return false;
currViewSpec++;
} else if (*currViewSpec == 'p') {
if (!skipString(currViewSpec, end, preserveAspectRatioSpec, sizeof(preserveAspectRatioSpec) / sizeof(UChar)))
return false;
if (currViewSpec >= end || *currViewSpec != '(')
return false;
currViewSpec++;
bool result = false;
setPreserveAspectRatioBaseValue(SVGPreserveAspectRatio::parsePreserveAspectRatio(currViewSpec, end, false, result));
if (!result)
return false;
if (currViewSpec >= end || *currViewSpec != ')')
return false;
currViewSpec++;
} else if (*currViewSpec == 't') {
if (!skipString(currViewSpec, end, transformSpec, sizeof(transformSpec) / sizeof(UChar)))
return false;
if (currViewSpec >= end || *currViewSpec != '(')
return false;
currViewSpec++;
SVGTransformable::parseTransformAttribute(m_transform.get(), currViewSpec, end, SVGTransformable::DoNotClearList);
if (currViewSpec >= end || *currViewSpec != ')')
return false;
currViewSpec++;
} else
return false;
if (currViewSpec < end && *currViewSpec == ';')
currViewSpec++;
}
if (currViewSpec >= end || *currViewSpec != ')')
return false;
return true;
}
}
#endif // ENABLE(SVG)
|
