1 #define __SP_FONT_C__
3 /*
4 * SVG <font> element implementation
5 *
6 * Author:
7 * Felipe C. da S. Sanches <felipe.sanches@gmail.com>
8 *
9 * Copyright (C) 2008, Felipe C. da S. Sanches
10 *
11 * Released under GNU GPL, read the file 'COPYING' for more information
12 */
14 #include "xml/repr.h"
15 #include "attributes.h"
16 #include "sp-font.h"
17 #include "sp-glyph.h"
18 #include "sp-missing-glyph.h"
19 #include "document.h"
20 #include "helper-fns.h"
22 static void sp_font_class_init(SPFontClass *fc);
23 static void sp_font_init(SPFont *font);
25 static void sp_font_build(SPObject *object, SPDocument *document, Inkscape::XML::Node *repr);
26 static void sp_font_release(SPObject *object);
27 static void sp_font_set(SPObject *object, unsigned int key, const gchar *value);
28 static Inkscape::XML::Node *sp_font_write(SPObject *object, Inkscape::XML::Node *repr, guint flags);
30 static void sp_font_child_added(SPObject *object, Inkscape::XML::Node *child, Inkscape::XML::Node *ref);
31 static void sp_font_remove_child(SPObject *object, Inkscape::XML::Node *child);
32 static void sp_font_update(SPObject *object, SPCtx *ctx, guint flags);
34 // static gchar *sp_font_description(SPItem *item);
36 static SPObjectClass *parent_class;
38 GType sp_font_get_type(void)
39 {
40 static GType type = 0;
42 if (!type) {
43 GTypeInfo info = {
44 sizeof(SPFontClass),
45 NULL, /* base_init */
46 NULL, /* base_finalize */
47 (GClassInitFunc) sp_font_class_init,
48 NULL, /* class_finalize */
49 NULL, /* class_data */
50 sizeof(SPFont),
51 16, /* n_preallocs */
52 (GInstanceInitFunc) sp_font_init,
53 NULL, /* value_table */
54 };
55 type = g_type_register_static(SP_TYPE_OBJECT, "SPFont", &info, (GTypeFlags) 0);
56 }
58 return type;
59 }
61 static void sp_font_class_init(SPFontClass *fc)
62 {
63 SPObjectClass *sp_object_class = (SPObjectClass *) fc;
65 parent_class = (SPObjectClass *) g_type_class_ref(SP_TYPE_OBJECT);
67 sp_object_class->build = sp_font_build;
68 sp_object_class->release = sp_font_release;
69 sp_object_class->set = sp_font_set;
70 sp_object_class->write = sp_font_write;
71 sp_object_class->child_added = sp_font_child_added;
72 sp_object_class->remove_child = sp_font_remove_child;
73 sp_object_class->update = sp_font_update;
74 }
76 static void sp_font_init(SPFont *font)
77 {
78 font->horiz_origin_x = 0;
79 font->horiz_origin_y = 0;
80 font->horiz_adv_x = 0;
81 //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
82 font->vert_origin_x = 0;
83 font->vert_origin_y = 0;
84 font->vert_adv_y = 0;
85 }
87 static void sp_font_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, "horiz-origin-x");
94 sp_object_read_attr(object, "horiz-origin-y");
95 sp_object_read_attr(object, "horiz-adv-x");
96 sp_object_read_attr(object, "vert-origin-x");
97 sp_object_read_attr(object, "vert-origin-y");
98 sp_object_read_attr(object, "vert-adv-y");
99 }
102 static void sp_font_children_modified(SPFont *sp_font)
103 {
104 SPObject* node = sp_font->children;
105 for(;node;node=node->next){
106 if (SP_IS_GLYPH(node)){
107 g_warning("We have a <glyph> childnode:\n\td=%s\n\tvert-origin-x=%f\n\tvert-origin-y=%f\n\tvert-adv-y=%f", ((SPGlyph*)node)->d, ((SPGlyph*)node)->vert_origin_x, ((SPGlyph*)node)->vert_origin_y, ((SPGlyph*)node)->vert_adv_y );
109 }
110 if (SP_IS_MISSING_GLYPH(node)){
111 g_warning("We have a <missing-glyph> childnode:\n\td=%s\n\thoriz-origin-x=%f\n\thoriz-origin-y=%f\n\thoriz-adv-x=%f", ((SPMissingGlyph*)node)->d, ((SPMissingGlyph*)node)->vert_origin_x, ((SPMissingGlyph*)node)->vert_origin_y, ((SPMissingGlyph*)node)->vert_adv_y );
112 }
113 // if (SP_IS_FONT_FACE_SRC(node)){
114 // }
115 }
116 }
118 /**
119 * Callback for child_added event.
120 */
121 static void
122 sp_font_child_added(SPObject *object, Inkscape::XML::Node *child, Inkscape::XML::Node *ref)
123 {
124 SPFont *f = SP_FONT(object);
126 if (((SPObjectClass *) parent_class)->child_added)
127 (* ((SPObjectClass *) parent_class)->child_added)(object, child, ref);
129 sp_font_children_modified(f);
130 object->parent->requestModified(SP_OBJECT_MODIFIED_FLAG);
131 }
134 /**
135 * Callback for remove_child event.
136 */
137 static void
138 sp_font_remove_child(SPObject *object, Inkscape::XML::Node *child)
139 {
140 SPFont *f = SP_FONT(object);
142 if (((SPObjectClass *) parent_class)->remove_child)
143 (* ((SPObjectClass *) parent_class)->remove_child)(object, child);
145 sp_font_children_modified(f);
146 object->parent->requestModified(SP_OBJECT_MODIFIED_FLAG);
147 }
149 static void sp_font_release(SPObject *object)
150 {
151 //SPFont *font = SP_FONT(object);
153 if (((SPObjectClass *) parent_class)->release) {
154 ((SPObjectClass *) parent_class)->release(object);
155 }
156 }
158 static void sp_font_set(SPObject *object, unsigned int key, const gchar *value)
159 {
160 SPFont *font = SP_FONT(object);
161 double number;
163 switch (key) {
164 case SP_ATTR_HORIZ_ORIGIN_X:
165 number = helperfns_read_number(value);
166 if (number != font->horiz_origin_x){
167 font->horiz_origin_x = number;
168 g_warning("<font>: SP_ATTR_HORIZ_ORIGIN_X: %f", number);
169 object->requestModified(SP_OBJECT_MODIFIED_FLAG);
170 }
171 break;
172 case SP_ATTR_HORIZ_ORIGIN_Y:
173 number = helperfns_read_number(value);
174 if (number != font->horiz_origin_y){
175 font->horiz_origin_y = number;
176 g_warning("<font>: SP_ATTR_HORIZ_ORIGIN_Y: %f", number);
177 object->requestModified(SP_OBJECT_MODIFIED_FLAG);
178 }
179 break;
180 case SP_ATTR_HORIZ_ADV_X:
181 number = helperfns_read_number(value);
182 if (number != font->horiz_adv_x){
183 font->horiz_adv_x = number;
184 g_warning("<font>: SP_ATTR_HORIZ_ADV_X: %f", number);
185 object->requestModified(SP_OBJECT_MODIFIED_FLAG);
186 }
187 break;
188 case SP_ATTR_VERT_ORIGIN_X:
189 number = helperfns_read_number(value);
190 if (number != font->vert_origin_x){
191 font->vert_origin_x = number;
192 g_warning("<font>: SP_ATTR_VERT_ORIGIN_X: %f", number);
193 object->requestModified(SP_OBJECT_MODIFIED_FLAG);
194 }
195 break;
196 case SP_ATTR_VERT_ORIGIN_Y:
197 number = helperfns_read_number(value);
198 if (number != font->vert_origin_y){
199 font->vert_origin_y = number;
200 g_warning("<font>: SP_ATTR_VERT_ORIGIN_Y: %f", number);
201 object->requestModified(SP_OBJECT_MODIFIED_FLAG);
202 }
203 break;
204 case SP_ATTR_VERT_ADV_Y:
205 number = helperfns_read_number(value);
206 if (number != font->vert_adv_y){
207 font->vert_adv_y = number;
208 g_warning("<font>: SP_ATTR_VERT_ADV_Y: %f", number);
209 object->requestModified(SP_OBJECT_MODIFIED_FLAG);
210 }
211 break;
212 default:
213 if (((SPObjectClass *) (parent_class))->set) {
214 ((SPObjectClass *) (parent_class))->set(object, key, value);
215 }
216 break;
217 }
218 }
220 /**
221 * Receives update notifications.
222 */
223 static void
224 sp_font_update(SPObject *object, SPCtx *ctx, guint flags)
225 {
226 if (flags & (SP_OBJECT_MODIFIED_FLAG)) {
227 sp_object_read_attr(object, "horiz-origin-x");
228 sp_object_read_attr(object, "horiz-origin-y");
229 sp_object_read_attr(object, "horiz-adv-x");
230 sp_object_read_attr(object, "vert-origin-x");
231 sp_object_read_attr(object, "vert-origin-y");
232 sp_object_read_attr(object, "vert-adv-y");
233 }
235 if (((SPObjectClass *) parent_class)->update) {
236 ((SPObjectClass *) parent_class)->update(object, ctx, flags);
237 }
238 }
240 #define COPY_ATTR(rd,rs,key) (rd)->setAttribute((key), rs->attribute(key));
242 static Inkscape::XML::Node *sp_font_write(SPObject *object, Inkscape::XML::Node *repr, guint flags)
243 {
244 SPFont *font = SP_FONT(object);
246 if ((flags & SP_OBJECT_WRITE_BUILD) && !repr) {
247 Inkscape::XML::Document *xml_doc = sp_document_repr_doc(SP_OBJECT_DOCUMENT(object));
248 repr = xml_doc->createElement("svg:font");
249 }
251 sp_repr_set_svg_double(repr, "horiz-origin-x", font->horiz_origin_x);
252 sp_repr_set_svg_double(repr, "horiz-origin-y", font->horiz_origin_y);
253 sp_repr_set_svg_double(repr, "horiz-adv-x", font->horiz_adv_x);
254 sp_repr_set_svg_double(repr, "vert-origin-x", font->vert_origin_x);
255 sp_repr_set_svg_double(repr, "vert-origin-y", font->vert_origin_y);
256 sp_repr_set_svg_double(repr, "vert-adv-y", font->vert_adv_y);
258 if (repr != SP_OBJECT_REPR(object)) {
259 COPY_ATTR(repr, object->repr, "horiz-origin-x");
260 COPY_ATTR(repr, object->repr, "horiz-origin-y");
261 COPY_ATTR(repr, object->repr, "horiz-adv-x");
262 COPY_ATTR(repr, object->repr, "vert-origin-x");
263 COPY_ATTR(repr, object->repr, "vert-origin-y");
264 COPY_ATTR(repr, object->repr, "vert-adv-y");
265 }
267 if (((SPObjectClass *) (parent_class))->write) {
268 ((SPObjectClass *) (parent_class))->write(object, repr, flags);
269 }
271 return repr;
272 }
274 /*
275 Local Variables:
276 mode:c++
277 c-file-style:"stroustrup"
278 c-file-offsets:((innamespace . 0)(inline-open . 0)(case-label . +))
279 indent-tabs-mode:nil
280 fill-column:99
281 End:
282 */
283 // vim: filetype=cpp:expandtab:shiftwidth=4:tabstop=8:softtabstop=4 :