1 #ifdef HAVE_CONFIG_H
2 # include <config.h>
3 #endif
5 #ifdef ENABLE_SVG_FONTS
7 /*
8 * SVG <font> element implementation
9 *
10 * Author:
11 * Felipe C. da S. Sanches <felipe.sanches@gmail.com>
12 *
13 * Copyright (C) 2008, Felipe C. da S. Sanches
14 *
15 * Released under GNU GPL, read the file 'COPYING' for more information
16 */
18 #include "xml/repr.h"
19 #include "attributes.h"
20 #include "sp-font.h"
21 #include "sp-glyph.h"
22 #include "sp-missing-glyph.h"
23 #include "document.h"
24 #include "helper-fns.h"
26 #include "display/nr-svgfonts.h"
28 static void sp_font_class_init(SPFontClass *fc);
29 static void sp_font_init(SPFont *font);
31 static void sp_font_build(SPObject *object, SPDocument *document, Inkscape::XML::Node *repr);
32 static void sp_font_release(SPObject *object);
33 static void sp_font_set(SPObject *object, unsigned int key, const gchar *value);
34 static Inkscape::XML::Node *sp_font_write(SPObject *object, Inkscape::XML::Document *doc, Inkscape::XML::Node *repr, guint flags);
36 static void sp_font_child_added(SPObject *object, Inkscape::XML::Node *child, Inkscape::XML::Node *ref);
37 static void sp_font_remove_child(SPObject *object, Inkscape::XML::Node *child);
38 static void sp_font_update(SPObject *object, SPCtx *ctx, guint flags);
40 // static gchar *sp_font_description(SPItem *item);
42 static SPObjectClass *parent_class;
44 GType sp_font_get_type(void)
45 {
46 static GType type = 0;
48 if (!type) {
49 GTypeInfo info = {
50 sizeof(SPFontClass),
51 NULL, /* base_init */
52 NULL, /* base_finalize */
53 (GClassInitFunc) sp_font_class_init,
54 NULL, /* class_finalize */
55 NULL, /* class_data */
56 sizeof(SPFont),
57 16, /* n_preallocs */
58 (GInstanceInitFunc) sp_font_init,
59 NULL, /* value_table */
60 };
61 type = g_type_register_static(SP_TYPE_OBJECT, "SPFont", &info, (GTypeFlags) 0);
62 }
64 return type;
65 }
67 static void sp_font_class_init(SPFontClass *fc)
68 {
69 SPObjectClass *sp_object_class = (SPObjectClass *) fc;
71 parent_class = (SPObjectClass *) g_type_class_ref(SP_TYPE_OBJECT);
73 sp_object_class->build = sp_font_build;
74 sp_object_class->release = sp_font_release;
75 sp_object_class->set = sp_font_set;
76 sp_object_class->write = sp_font_write;
77 sp_object_class->child_added = sp_font_child_added;
78 sp_object_class->remove_child = sp_font_remove_child;
79 sp_object_class->update = sp_font_update;
80 }
82 static void sp_font_init(SPFont *font)
83 {
84 font->horiz_origin_x = 0;
85 font->horiz_origin_y = 0;
86 font->horiz_adv_x = 0;
87 //I think we should have extra stuff here and in the set method in order to set default value as specified at http://www.w3.org/TR/SVG/fonts.html
88 font->vert_origin_x = 0;
89 font->vert_origin_y = 0;
90 font->vert_adv_y = 0;
91 }
93 static void sp_font_build(SPObject *object, SPDocument *document, Inkscape::XML::Node *repr)
94 {
95 if (((SPObjectClass *) (parent_class))->build) {
96 ((SPObjectClass *) (parent_class))->build(object, document, repr);
97 }
99 sp_object_read_attr(object, "horiz-origin-x");
100 sp_object_read_attr(object, "horiz-origin-y");
101 sp_object_read_attr(object, "horiz-adv-x");
102 sp_object_read_attr(object, "vert-origin-x");
103 sp_object_read_attr(object, "vert-origin-y");
104 sp_object_read_attr(object, "vert-adv-y");
106 sp_document_add_resource(document, "font", object);
107 }
110 static void sp_font_children_modified(SPFont */*sp_font*/)
111 {
112 }
114 /**
115 * Callback for child_added event.
116 */
117 static void
118 sp_font_child_added(SPObject *object, Inkscape::XML::Node *child, Inkscape::XML::Node *ref)
119 {
120 SPFont *f = SP_FONT(object);
122 if (((SPObjectClass *) parent_class)->child_added)
123 (* ((SPObjectClass *) parent_class)->child_added)(object, child, ref);
125 sp_font_children_modified(f);
126 object->parent->requestModified(SP_OBJECT_MODIFIED_FLAG);
127 }
130 /**
131 * Callback for remove_child event.
132 */
133 static void
134 sp_font_remove_child(SPObject *object, Inkscape::XML::Node *child)
135 {
136 SPFont *f = SP_FONT(object);
138 if (((SPObjectClass *) parent_class)->remove_child)
139 (* ((SPObjectClass *) parent_class)->remove_child)(object, child);
141 sp_font_children_modified(f);
142 object->parent->requestModified(SP_OBJECT_MODIFIED_FLAG);
143 }
145 static void sp_font_release(SPObject *object)
146 {
147 //SPFont *font = SP_FONT(object);
148 sp_document_remove_resource(SP_OBJECT_DOCUMENT(object), "font", object);
150 if (((SPObjectClass *) parent_class)->release) {
151 ((SPObjectClass *) parent_class)->release(object);
152 }
153 }
155 static void sp_font_set(SPObject *object, unsigned int key, const gchar *value)
156 {
157 SPFont *font = SP_FONT(object);
158 double number;
160 switch (key) {
161 case SP_ATTR_HORIZ_ORIGIN_X:
162 number = helperfns_read_number(value);
163 if (number != font->horiz_origin_x){
164 font->horiz_origin_x = number;
165 object->requestModified(SP_OBJECT_MODIFIED_FLAG);
166 }
167 break;
168 case SP_ATTR_HORIZ_ORIGIN_Y:
169 number = helperfns_read_number(value);
170 if (number != font->horiz_origin_y){
171 font->horiz_origin_y = number;
172 object->requestModified(SP_OBJECT_MODIFIED_FLAG);
173 }
174 break;
175 case SP_ATTR_HORIZ_ADV_X:
176 number = helperfns_read_number(value);
177 if (number != font->horiz_adv_x){
178 font->horiz_adv_x = number;
179 object->requestModified(SP_OBJECT_MODIFIED_FLAG);
180 }
181 break;
182 case SP_ATTR_VERT_ORIGIN_X:
183 number = helperfns_read_number(value);
184 if (number != font->vert_origin_x){
185 font->vert_origin_x = number;
186 object->requestModified(SP_OBJECT_MODIFIED_FLAG);
187 }
188 break;
189 case SP_ATTR_VERT_ORIGIN_Y:
190 number = helperfns_read_number(value);
191 if (number != font->vert_origin_y){
192 font->vert_origin_y = number;
193 object->requestModified(SP_OBJECT_MODIFIED_FLAG);
194 }
195 break;
196 case SP_ATTR_VERT_ADV_Y:
197 number = helperfns_read_number(value);
198 if (number != font->vert_adv_y){
199 font->vert_adv_y = number;
200 object->requestModified(SP_OBJECT_MODIFIED_FLAG);
201 }
202 break;
203 default:
204 if (((SPObjectClass *) (parent_class))->set) {
205 ((SPObjectClass *) (parent_class))->set(object, key, value);
206 }
207 break;
208 }
209 }
211 /**
212 * Receives update notifications.
213 */
214 static void
215 sp_font_update(SPObject *object, SPCtx *ctx, guint flags)
216 {
217 if (flags & (SP_OBJECT_MODIFIED_FLAG)) {
218 sp_object_read_attr(object, "horiz-origin-x");
219 sp_object_read_attr(object, "horiz-origin-y");
220 sp_object_read_attr(object, "horiz-adv-x");
221 sp_object_read_attr(object, "vert-origin-x");
222 sp_object_read_attr(object, "vert-origin-y");
223 sp_object_read_attr(object, "vert-adv-y");
224 }
226 if (((SPObjectClass *) parent_class)->update) {
227 ((SPObjectClass *) parent_class)->update(object, ctx, flags);
228 }
229 }
231 #define COPY_ATTR(rd,rs,key) (rd)->setAttribute((key), rs->attribute(key));
233 static Inkscape::XML::Node *sp_font_write(SPObject *object, Inkscape::XML::Document *xml_doc, Inkscape::XML::Node *repr, guint flags)
234 {
235 SPFont *font = SP_FONT(object);
237 if ((flags & SP_OBJECT_WRITE_BUILD) && !repr) {
238 repr = xml_doc->createElement("svg:font");
239 }
241 sp_repr_set_svg_double(repr, "horiz-origin-x", font->horiz_origin_x);
242 sp_repr_set_svg_double(repr, "horiz-origin-y", font->horiz_origin_y);
243 sp_repr_set_svg_double(repr, "horiz-adv-x", font->horiz_adv_x);
244 sp_repr_set_svg_double(repr, "vert-origin-x", font->vert_origin_x);
245 sp_repr_set_svg_double(repr, "vert-origin-y", font->vert_origin_y);
246 sp_repr_set_svg_double(repr, "vert-adv-y", font->vert_adv_y);
248 if (repr != SP_OBJECT_REPR(object)) {
249 COPY_ATTR(repr, object->repr, "horiz-origin-x");
250 COPY_ATTR(repr, object->repr, "horiz-origin-y");
251 COPY_ATTR(repr, object->repr, "horiz-adv-x");
252 COPY_ATTR(repr, object->repr, "vert-origin-x");
253 COPY_ATTR(repr, object->repr, "vert-origin-y");
254 COPY_ATTR(repr, object->repr, "vert-adv-y");
255 }
257 if (((SPObjectClass *) (parent_class))->write) {
258 ((SPObjectClass *) (parent_class))->write(object, xml_doc, repr, flags);
259 }
261 return repr;
262 }
263 #endif //#ifdef ENABLE_SVG_FONTS
264 /*
265 Local Variables:
266 mode:c++
267 c-file-style:"stroustrup"
268 c-file-offsets:((innamespace . 0)(inline-open . 0)(case-label . +))
269 indent-tabs-mode:nil
270 fill-column:99
271 End:
272 */
273 // vim: filetype=cpp:expandtab:shiftwidth=4:tabstop=8:softtabstop=4 :