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
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
|
/*
Copyright (C) 2004, 2005, 2008 Nikolas Zimmermann <zimmermann@kde.org>
2004, 2005, 2006, 2007 Rob Buis <buis@kde.org>
This file is part of the KDE project
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 "wtf/Platform.h"
#if ENABLE(SVG)
#include "SVGPreserveAspectRatio.h"
#include "SVGParserUtilities.h"
#include "SVGSVGElement.h"
namespace WebCore
{
SVGPreserveAspectRatio::SVGPreserveAspectRatio()
: m_align(SVG_PRESERVEASPECTRATIO_XMIDYMID)
, m_meetOrSlice(SVG_MEETORSLICE_MEET)
{
// FIXME: Should the two values default to UNKNOWN instead?
}
SVGPreserveAspectRatio::~SVGPreserveAspectRatio()
{
}
void SVGPreserveAspectRatio::setAlign(unsigned short align)
{
m_align = align;
}
unsigned short SVGPreserveAspectRatio::align() const
{
return m_align;
}
void SVGPreserveAspectRatio::setMeetOrSlice(unsigned short meetOrSlice)
{
m_meetOrSlice = meetOrSlice;
}
unsigned short SVGPreserveAspectRatio::meetOrSlice() const
{
return m_meetOrSlice;
}
bool SVGPreserveAspectRatio::parsePreserveAspectRatio(const UChar *&currParam, const UChar *end, bool validate)
{
SVGPreserveAspectRatioType align = SVG_PRESERVEASPECTRATIO_NONE;
SVGMeetOrSliceType meetOrSlice = SVG_MEETORSLICE_MEET;
bool ret = false;
if (!skipOptionalSpaces(currParam, end)) {
goto bail_out;
}
if (*currParam == 'd') {
/*if (!skipString(currParam, end, "defer"))
goto bail_out;
// FIXME: We just ignore the "defer" here.
if (!skipOptionalSpaces(currParam, end))
goto bail_out;*/
}
if (*currParam == 'n') {
/*if (!skipString(currParam, end, "none"))
goto bail_out;*/
skipOptionalSpaces(currParam, end);
} else if (*currParam == 'x') {
if ((end - currParam) < 8) {
goto bail_out;
}
if (currParam[1] != 'M' || currParam[4] != 'Y' || currParam[5] != 'M') {
goto bail_out;
}
if (currParam[2] == 'i') {
if (currParam[3] == 'n') {
if (currParam[6] == 'i') {
if (currParam[7] == 'n') {
align = SVG_PRESERVEASPECTRATIO_XMINYMIN;
} else if (currParam[7] == 'd') {
align = SVG_PRESERVEASPECTRATIO_XMINYMID;
} else {
goto bail_out;
}
} else if (currParam[6] == 'a' && currParam[7] == 'x') {
align = SVG_PRESERVEASPECTRATIO_XMINYMAX;
} else {
goto bail_out;
}
} else if (currParam[3] == 'd') {
if (currParam[6] == 'i') {
if (currParam[7] == 'n') {
align = SVG_PRESERVEASPECTRATIO_XMIDYMIN;
} else if (currParam[7] == 'd') {
align = SVG_PRESERVEASPECTRATIO_XMIDYMID;
} else {
goto bail_out;
}
} else if (currParam[6] == 'a' && currParam[7] == 'x') {
align = SVG_PRESERVEASPECTRATIO_XMIDYMAX;
} else {
goto bail_out;
}
} else {
goto bail_out;
}
} else if (currParam[2] == 'a' && currParam[3] == 'x') {
if (currParam[6] == 'i') {
if (currParam[7] == 'n') {
align = SVG_PRESERVEASPECTRATIO_XMAXYMIN;
} else if (currParam[7] == 'd') {
align = SVG_PRESERVEASPECTRATIO_XMAXYMID;
} else {
goto bail_out;
}
} else if (currParam[6] == 'a' && currParam[7] == 'x') {
align = SVG_PRESERVEASPECTRATIO_XMAXYMAX;
} else {
goto bail_out;
}
} else {
goto bail_out;
}
currParam += 8;
skipOptionalSpaces(currParam, end);
} else {
goto bail_out;
}
if (currParam < end) {
if (*currParam == 'm') {
/*if (!skipString(currParam, end, "meet"))
goto bail_out;
skipOptionalSpaces(currParam, end);*/
} else if (*currParam == 's') {
/*if (!skipString(currParam, end, "slice"))
goto bail_out;
skipOptionalSpaces(currParam, end);
if (align != SVG_PRESERVEASPECTRATIO_NONE)
meetOrSlice = SVG_MEETORSLICE_SLICE;*/
}
}
if (end != currParam && validate) {
bail_out:
// FIXME: Should the two values be set to UNKNOWN instead?
align = SVG_PRESERVEASPECTRATIO_NONE;
meetOrSlice = SVG_MEETORSLICE_MEET;
} else {
ret = true;
}
if (m_align == align && m_meetOrSlice == meetOrSlice) {
return ret;
}
m_align = align;
m_meetOrSlice = meetOrSlice;
return ret;
}
AffineTransform SVGPreserveAspectRatio::getCTM(double logicX, double logicY,
double logicWidth, double logicHeight,
double /*physX*/, double /*physY*/,
double physWidth, double physHeight)
{
AffineTransform temp;
if (align() == SVG_PRESERVEASPECTRATIO_UNKNOWN) {
return temp;
}
double vpar = logicWidth / logicHeight;
double svgar = physWidth / physHeight;
if (align() == SVG_PRESERVEASPECTRATIO_NONE) {
temp.scale(physWidth / logicWidth, physHeight / logicHeight);
temp.translate(-logicX, -logicY);
} else if ((vpar < svgar && meetOrSlice() == SVG_MEETORSLICE_MEET) || (vpar >= svgar && meetOrSlice() == SVG_MEETORSLICE_SLICE)) {
temp.scale(physHeight / logicHeight, physHeight / logicHeight);
if (align() == SVG_PRESERVEASPECTRATIO_XMINYMIN || align() == SVG_PRESERVEASPECTRATIO_XMINYMID || align() == SVG_PRESERVEASPECTRATIO_XMINYMAX) {
temp.translate(-logicX, -logicY);
} else if (align() == SVG_PRESERVEASPECTRATIO_XMIDYMIN || align() == SVG_PRESERVEASPECTRATIO_XMIDYMID || align() == SVG_PRESERVEASPECTRATIO_XMIDYMAX) {
temp.translate(-logicX - (logicWidth - physWidth * logicHeight / physHeight) / 2, -logicY);
} else {
temp.translate(-logicX - (logicWidth - physWidth * logicHeight / physHeight), -logicY);
}
} else {
temp.scale(physWidth / logicWidth, physWidth / logicWidth);
if (align() == SVG_PRESERVEASPECTRATIO_XMINYMIN || align() == SVG_PRESERVEASPECTRATIO_XMIDYMIN || align() == SVG_PRESERVEASPECTRATIO_XMAXYMIN) {
temp.translate(-logicX, -logicY);
} else if (align() == SVG_PRESERVEASPECTRATIO_XMINYMID || align() == SVG_PRESERVEASPECTRATIO_XMIDYMID || align() == SVG_PRESERVEASPECTRATIO_XMAXYMID) {
temp.translate(-logicX, -logicY - (logicHeight - physHeight * logicWidth / physWidth) / 2);
} else {
temp.translate(-logicX, -logicY - (logicHeight - physHeight * logicWidth / physWidth));
}
}
return temp;
}
}
#endif // ENABLE(SVG)
|
