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
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
|
/** @file
* @gradient stop class.
*/
/* Authors:
* Lauris Kaplinski <lauris@kaplinski.com>
* bulia byak
* Johan Engelen <j.b.c.engelen@ewi.utwente.nl>
* Jon A. Cruz <jon@joncruz.org>
*
* Copyright (C) 1999,2005 authors
* Copyright (C) 2010 Jon A. Cruz
*
* Released under GNU GPL, read the file 'COPYING' for more information
*/
#include "sp-stop.h"
#include "style.h"
#include "attributes.h"
#include "streq.h"
#include "svg/svg.h"
#include "svg/svg-color.h"
#include "svg/css-ostringstream.h"
SPStop::SPStop() : SPObject() {
this->path_string = NULL;
this->offset = 0.0;
this->currentColor = false;
this->specified_color.set( 0x000000ff );
this->opacity = 1.0;
}
SPStop::~SPStop() {
}
void SPStop::build(SPDocument* doc, Inkscape::XML::Node* repr) {
SPObject::build(doc, repr);
this->readAttr( "offset" );
this->readAttr( "stop-color" );
this->readAttr( "stop-opacity" );
this->readAttr( "style" );
this->readAttr( "path" ); // For mesh
}
/**
* Virtual build: set stop attributes from its associated XML node.
*/
void SPStop::set(unsigned int key, const gchar* value) {
switch (key) {
case SP_ATTR_STYLE: {
/** \todo
* fixme: We are reading simple values 3 times during build (Lauris).
* \par
* We need presentation attributes etc.
* \par
* remove the hackish "style reading" from here: see comments in
* sp_object_get_style_property about the bugs in our current
* approach. However, note that SPStyle doesn't currently have
* stop-color and stop-opacity properties.
*/
{
gchar const *p = this->getStyleProperty( "stop-color", "black");
if (streq(p, "currentColor")) {
this->currentColor = true;
} else {
this->specified_color = SPStop::readStopColor( p );
}
}
{
gchar const *p = this->getStyleProperty( "stop-opacity", "1");
gdouble opacity = sp_svg_read_percentage(p, this->opacity);
this->opacity = opacity;
}
this->requestModified(SP_OBJECT_MODIFIED_FLAG | SP_OBJECT_STYLE_MODIFIED_FLAG);
break;
}
case SP_PROP_STOP_COLOR: {
{
gchar const *p = this->getStyleProperty( "stop-color", "black");
if (streq(p, "currentColor")) {
this->currentColor = true;
} else {
this->currentColor = false;
this->specified_color = SPStop::readStopColor( p );
}
}
this->requestModified(SP_OBJECT_MODIFIED_FLAG | SP_OBJECT_STYLE_MODIFIED_FLAG);
break;
}
case SP_PROP_STOP_OPACITY: {
{
gchar const *p = this->getStyleProperty( "stop-opacity", "1");
gdouble opacity = sp_svg_read_percentage(p, this->opacity);
this->opacity = opacity;
}
this->requestModified(SP_OBJECT_MODIFIED_FLAG | SP_OBJECT_STYLE_MODIFIED_FLAG);
break;
}
case SP_ATTR_OFFSET: {
this->offset = sp_svg_read_percentage(value, 0.0);
this->requestModified(SP_OBJECT_MODIFIED_FLAG | SP_OBJECT_STYLE_MODIFIED_FLAG);
break;
}
case SP_PROP_STOP_PATH: {
if (value) {
this->path_string = new Glib::ustring( value );
//Geom::PathVector pv = sp_svg_read_pathv(value);
//SPCurve *curve = new SPCurve(pv);
//if( curve ) {
// std::cout << "Got Curve" << std::endl;
//curve->unref();
//}
this->requestModified(SP_OBJECT_MODIFIED_FLAG);
}
break;
}
default: {
SPObject::set(key, value);
break;
}
}
}
/**
* Virtual set: set attribute to value.
*/
Inkscape::XML::Node* SPStop::write(Inkscape::XML::Document* xml_doc, Inkscape::XML::Node* repr, guint flags) {
if ((flags & SP_OBJECT_WRITE_BUILD) && !repr) {
repr = xml_doc->createElement("svg:stop");
}
Glib::ustring colorStr = this->specified_color.toString();
gfloat opacity = this->opacity;
SPObject::write(xml_doc, repr, flags);
// Since we do a hackish style setting here (because SPStyle does not support stop-color and
// stop-opacity), we must do it AFTER calling the parent write method; otherwise
// sp_object_write would clear our style= attribute (bug 1695287)
Inkscape::CSSOStringStream os;
os << "stop-color:";
if (this->currentColor) {
os << "currentColor";
} else {
os << colorStr;
}
os << ";stop-opacity:" << opacity;
repr->setAttribute("style", os.str().c_str());
repr->setAttribute("stop-color", NULL);
repr->setAttribute("stop-opacity", NULL);
sp_repr_set_css_double(repr, "offset", this->offset);
/* strictly speaking, offset an SVG <number> rather than a CSS one, but exponents make no sense
* for offset proportions. */
return repr;
}
/**
* Virtual write: write object attributes to repr.
*/
// A stop might have some non-stop siblings
SPStop* SPStop::getNextStop() {
SPStop *result = 0;
for (SPObject* obj = getNext(); obj && !result; obj = obj->getNext()) {
if (SP_IS_STOP(obj)) {
result = SP_STOP(obj);
}
}
return result;
}
SPStop* SPStop::getPrevStop() {
SPStop *result = 0;
for (SPObject* obj = getPrev(); obj; obj = obj->getPrev()) {
// The closest previous SPObject that is an SPStop *should* be ourself.
if (SP_IS_STOP(obj)) {
SPStop* stop = SP_STOP(obj);
// Sanity check to ensure we have a proper sibling structure.
if (stop->getNextStop() == this) {
result = stop;
} else {
g_warning("SPStop previous/next relationship broken");
}
break;
}
}
return result;
}
SPColor SPStop::readStopColor(Glib::ustring const &styleStr, guint32 dfl) {
SPColor color(dfl);
SPIPaint paint;
paint.read( styleStr.c_str() );
if ( paint.isColor() ) {
color = paint.value.color;
}
return color;
}
SPColor SPStop::getEffectiveColor() const {
SPColor ret;
if (currentColor) {
char const *str = getStyleProperty("color", NULL);
/* Default value: arbitrarily black. (SVG1.1 and CSS2 both say that the initial
* value depends on user agent, and don't give any further restrictions that I can
* see.) */
ret = readStopColor( str, 0 );
} else {
ret = specified_color;
}
return ret;
}
/**
* Return stop's color as 32bit value.
*/
guint32 SPStop::get_rgba32() const {
guint32 rgb0 = 0;
/* Default value: arbitrarily black. (SVG1.1 and CSS2 both say that the initial
* value depends on user agent, and don't give any further restrictions that I can
* see.) */
if (this->currentColor) {
char const *str = this->getStyleProperty("color", NULL);
if (str) {
rgb0 = sp_svg_read_color(str, rgb0);
}
unsigned const alpha = static_cast<unsigned>(this->opacity * 0xff + 0.5);
g_return_val_if_fail((alpha & ~0xff) == 0, rgb0 | 0xff);
return rgb0 | alpha;
} else {
return this->specified_color.toRGBA32(this->opacity);
}
}
/*
Local Variables:
mode:c++
c-file-style:"stroustrup"
c-file-offsets:((innamespace . 0)(inline-open . 0)(case-label . +))
indent-tabs-mode:nil
fill-column:99
End:
*/
// vim: filetype=cpp:expandtab:shiftwidth=4:tabstop=8:softtabstop=4:fileencoding=utf-8:textwidth=99 :
|