1 #ifdef HAVE_CONFIG_H
2 # include <config.h>
3 #endif
5 #ifdef ENABLE_SVG_FONTS
6 #define __SP_GLYPH_C__
8 /*
9 * SVG <glyph> element implementation
10 *
11 * Author:
12 * Felipe C. da S. Sanches <felipe.sanches@gmail.com>
13 *
14 * Copyright (C) 2008, Felipe C. da S. Sanches
15 *
16 * Released under GNU GPL, read the file 'COPYING' for more information
17 */
19 #include "xml/repr.h"
20 #include "attributes.h"
21 #include "sp-glyph.h"
22 #include "document.h"
23 #include "helper-fns.h"
25 static void sp_glyph_class_init(SPGlyphClass *gc);
26 static void sp_glyph_init(SPGlyph *glyph);
28 static void sp_glyph_build(SPObject *object, SPDocument *document, Inkscape::XML::Node *repr);
29 static void sp_glyph_release(SPObject *object);
30 static void sp_glyph_set(SPObject *object, unsigned int key, const gchar *value);
31 static Inkscape::XML::Node *sp_glyph_write(SPObject *object, Inkscape::XML::Document *doc, Inkscape::XML::Node *repr, guint flags);
32 static void sp_glyph_update(SPObject *object, SPCtx *ctx, guint flags);
34 static SPObjectClass *parent_class;
36 GType sp_glyph_get_type(void)
37 {
38 static GType type = 0;
40 if (!type) {
41 GTypeInfo info = {
42 sizeof(SPGlyphClass),
43 NULL, /* base_init */
44 NULL, /* base_finalize */
45 (GClassInitFunc) sp_glyph_class_init,
46 NULL, /* class_finalize */
47 NULL, /* class_data */
48 sizeof(SPGlyph),
49 16, /* n_preallocs */
50 (GInstanceInitFunc) sp_glyph_init,
51 NULL, /* value_table */
52 };
53 type = g_type_register_static(SP_TYPE_OBJECT, "SPGlyph", &info, (GTypeFlags) 0);
54 }
56 return type;
57 }
59 static void sp_glyph_class_init(SPGlyphClass *gc)
60 {
61 SPObjectClass *sp_object_class = (SPObjectClass *) gc;
63 parent_class = (SPObjectClass*)g_type_class_peek_parent(gc);
65 sp_object_class->build = sp_glyph_build;
66 sp_object_class->release = sp_glyph_release;
67 sp_object_class->set = sp_glyph_set;
68 sp_object_class->write = sp_glyph_write;
69 sp_object_class->update = sp_glyph_update;
70 }
72 static void sp_glyph_init(SPGlyph *glyph)
73 {
74 //TODO: correct these values:
75 glyph->unicode = NULL;
76 glyph->glyph_name = NULL;
77 glyph->d = NULL;
78 glyph->orientation = GLYPH_ORIENTATION_BOTH;
79 glyph->arabic_form = GLYPH_ARABIC_FORM_INITIAL;
80 glyph->lang = NULL;
81 glyph->horiz_adv_x = 0;
82 glyph->vert_origin_x = 0;
83 glyph->vert_origin_y = 0;
84 glyph->vert_adv_y = 0;
85 }
87 static void sp_glyph_build(SPObject *object, SPDocument *document, Inkscape::XML::Node *repr)
88 {
89 if (((SPObjectClass *) (parent_class))->build) {
90 ((SPObjectClass *) (parent_class))->build(object, document, repr);
91 }
93 sp_object_read_attr(object, "unicode");
94 sp_object_read_attr(object, "glyph-name");
95 sp_object_read_attr(object, "d");
96 sp_object_read_attr(object, "orientation");
97 sp_object_read_attr(object, "arabic-form");
98 sp_object_read_attr(object, "lang");
99 sp_object_read_attr(object, "horiz-adv-x");
100 sp_object_read_attr(object, "vert-origin-x");
101 sp_object_read_attr(object, "vert-origin-y");
102 sp_object_read_attr(object, "vert-adv-y");
103 }
105 static void sp_glyph_release(SPObject *object)
106 {
107 //SPGlyph *glyph = SP_GLYPH(object);
109 if (((SPObjectClass *) parent_class)->release) {
110 ((SPObjectClass *) parent_class)->release(object);
111 }
112 }
114 static glyphArabicForm sp_glyph_read_arabic_form(gchar const *value){
115 if (!value) return GLYPH_ARABIC_FORM_INITIAL; //TODO: verify which is the default default (for me, the spec is not clear)
116 switch(value[0]){
117 case 'i':
118 if (strncmp(value, "initial", 7) == 0) return GLYPH_ARABIC_FORM_INITIAL;
119 if (strncmp(value, "isolated", 8) == 0) return GLYPH_ARABIC_FORM_ISOLATED;
120 break;
121 case 'm':
122 if (strncmp(value, "medial", 6) == 0) return GLYPH_ARABIC_FORM_MEDIAL;
123 break;
124 case 't':
125 if (strncmp(value, "terminal", 8) == 0) return GLYPH_ARABIC_FORM_TERMINAL;
126 break;
127 }
128 return GLYPH_ARABIC_FORM_INITIAL; //TODO: VERIFY DEFAULT!
129 }
131 static glyphOrientation sp_glyph_read_orientation(gchar const *value){
132 if (!value) return GLYPH_ORIENTATION_BOTH;
133 switch(value[0]){
134 case 'h':
135 return GLYPH_ORIENTATION_HORIZONTAL;
136 break;
137 case 'v':
138 return GLYPH_ORIENTATION_VERTICAL;
139 break;
140 }
141 //ERROR? TODO: VERIFY PROPER ERROR HANDLING
142 return GLYPH_ORIENTATION_BOTH;
143 }
145 static void sp_glyph_set(SPObject *object, unsigned int key, const gchar *value)
146 {
147 SPGlyph *glyph = SP_GLYPH(object);
148 double number;
149 glyphOrientation orient;
150 glyphArabicForm form;
152 switch (key) {
153 case SP_ATTR_UNICODE:
154 if (glyph->unicode) g_free(glyph->unicode);
155 glyph->unicode = g_strdup(value);
156 object->requestModified(SP_OBJECT_MODIFIED_FLAG);
157 break;
158 case SP_ATTR_GLYPH_NAME:
159 if (glyph->glyph_name) g_free(glyph->glyph_name);
160 glyph->glyph_name = g_strdup(value);
161 object->requestModified(SP_OBJECT_MODIFIED_FLAG);
162 break;
163 case SP_ATTR_D:
164 if (glyph->d) g_free(glyph->d);
165 glyph->d = g_strdup(value);
166 object->requestModified(SP_OBJECT_MODIFIED_FLAG);
167 break;
168 case SP_ATTR_ORIENTATION:
169 orient = sp_glyph_read_orientation(value);
170 if (glyph->orientation != orient){
171 glyph->orientation = orient;
172 object->requestModified(SP_OBJECT_MODIFIED_FLAG);
173 }
174 break;
175 case SP_ATTR_ARABIC_FORM:
176 form = sp_glyph_read_arabic_form(value);
177 if (glyph->arabic_form != form){
178 glyph->arabic_form = form;
179 object->requestModified(SP_OBJECT_MODIFIED_FLAG);
180 }
181 break;
182 case SP_ATTR_LANG:
183 if (glyph->lang) g_free(glyph->lang);
184 glyph->lang = g_strdup(value);
185 object->requestModified(SP_OBJECT_MODIFIED_FLAG);
186 break;
187 case SP_ATTR_HORIZ_ADV_X:
188 number = helperfns_read_number(value);
189 if (number != glyph->horiz_adv_x){
190 glyph->horiz_adv_x = number;
191 object->requestModified(SP_OBJECT_MODIFIED_FLAG);
192 }
193 break;
194 case SP_ATTR_VERT_ORIGIN_X:
195 number = helperfns_read_number(value);
196 if (number != glyph->vert_origin_x){
197 glyph->vert_origin_x = number;
198 object->requestModified(SP_OBJECT_MODIFIED_FLAG);
199 }
200 break;
201 case SP_ATTR_VERT_ORIGIN_Y:
202 number = helperfns_read_number(value);
203 if (number != glyph->vert_origin_y){
204 glyph->vert_origin_y = number;
205 object->requestModified(SP_OBJECT_MODIFIED_FLAG);
206 }
207 break;
208 case SP_ATTR_VERT_ADV_Y:
209 number = helperfns_read_number(value);
210 if (number != glyph->vert_adv_y){
211 glyph->vert_adv_y = number;
212 object->requestModified(SP_OBJECT_MODIFIED_FLAG);
213 }
214 break;
215 default:
216 if (((SPObjectClass *) (parent_class))->set) {
217 ((SPObjectClass *) (parent_class))->set(object, key, value);
218 }
219 break;
220 }
221 }
223 /**
224 * * Receives update notifications.
225 * */
226 static void
227 sp_glyph_update(SPObject *object, SPCtx *ctx, guint flags)
228 {
229 SPGlyph *glyph = SP_GLYPH(object);
230 (void)glyph;
232 if (flags & SP_OBJECT_MODIFIED_FLAG) {
233 /* do something to trigger redisplay, updates? */
234 sp_object_read_attr(object, "unicode");
235 sp_object_read_attr(object, "glyph-name");
236 sp_object_read_attr(object, "d");
237 sp_object_read_attr(object, "orientation");
238 sp_object_read_attr(object, "arabic-form");
239 sp_object_read_attr(object, "lang");
240 sp_object_read_attr(object, "horiz-adv-x");
241 sp_object_read_attr(object, "vert-origin-x");
242 sp_object_read_attr(object, "vert-origin-y");
243 sp_object_read_attr(object, "vert-adv-y");
244 }
246 if (((SPObjectClass *) parent_class)->update) {
247 ((SPObjectClass *) parent_class)->update(object, ctx, flags);
248 }
249 }
251 #define COPY_ATTR(rd,rs,key) (rd)->setAttribute((key), rs->attribute(key));
253 static Inkscape::XML::Node *sp_glyph_write(SPObject *object, Inkscape::XML::Document *xml_doc, Inkscape::XML::Node *repr, guint flags)
254 {
255 // SPGlyph *glyph = SP_GLYPH(object);
257 if ((flags & SP_OBJECT_WRITE_BUILD) && !repr) {
258 repr = xml_doc->createElement("svg:glyph");
259 }
261 /* I am commenting out this part because I am not certain how does it work. I will have to study it later. Juca
262 repr->setAttribute("unicode", glyph->unicode);
263 repr->setAttribute("glyph-name", glyph->glyph_name);
264 repr->setAttribute("d", glyph->d);
265 sp_repr_set_svg_double(repr, "orientation", (double) glyph->orientation);
266 sp_repr_set_svg_double(repr, "arabic-form", (double) glyph->arabic_form);
267 repr->setAttribute("lang", glyph->lang);
268 sp_repr_set_svg_double(repr, "horiz-adv-x", glyph->horiz_adv_x);
269 sp_repr_set_svg_double(repr, "vert-origin-x", glyph->vert_origin_x);
270 sp_repr_set_svg_double(repr, "vert-origin-y", glyph->vert_origin_y);
271 sp_repr_set_svg_double(repr, "vert-adv-y", glyph->vert_adv_y);
272 */
273 if (repr != SP_OBJECT_REPR(object)) {
274 COPY_ATTR(repr, object->repr, "unicode");
275 COPY_ATTR(repr, object->repr, "glyph-name");
276 COPY_ATTR(repr, object->repr, "d");
277 COPY_ATTR(repr, object->repr, "orientation");
278 COPY_ATTR(repr, object->repr, "arabic-form");
279 COPY_ATTR(repr, object->repr, "lang");
280 COPY_ATTR(repr, object->repr, "horiz-adv-x");
281 COPY_ATTR(repr, object->repr, "vert-origin-x");
282 COPY_ATTR(repr, object->repr, "vert-origin-y");
283 COPY_ATTR(repr, object->repr, "vert-adv-y");
284 }
286 if (((SPObjectClass *) (parent_class))->write) {
287 ((SPObjectClass *) (parent_class))->write(object, xml_doc, repr, flags);
288 }
290 return repr;
291 }
292 #endif //#ifdef ENABLE_SVG_FONTS
293 /*
294 Local Variables:
295 mode:c++
296 c-file-style:"stroustrup"
297 c-file-offsets:((innamespace . 0)(inline-open . 0)(case-label . +))
298 indent-tabs-mode:nil
299 fill-column:99
300 End:
301 */
302 // vim: filetype=cpp:expandtab:shiftwidth=4:tabstop=8:softtabstop=4 :