6d7006f577a89e1df10445bcefb59399d136ac39
1 #define __SP_ANCHOR_C__
3 /*
4 * SVG <hkern> and <vkern> elements implementation
5 * W3C SVG 1.1 spec, page 476, section 20.7
6 *
7 * Author:
8 * Felipe C. da S. Sanches <felipe.sanches@gmail.com>
9 *
10 * Copyright (C) 2008, Felipe C. da S. Sanches
11 *
12 * Released under GNU GPL, read the file 'COPYING' for more information
13 */
15 #include "xml/repr.h"
16 #include "attributes.h"
17 #include "sp-glyph-kerning.h"
19 #include "document.h"
20 #include "helper-fns.h"
22 static void sp_glyph_kerning_class_init(SPGlyphKerningClass *gc);
23 static void sp_glyph_kerning_init(SPGlyphKerning *glyph);
25 static void sp_glyph_kerning_build(SPObject *object, SPDocument *document, Inkscape::XML::Node *repr);
26 static void sp_glyph_kerning_release(SPObject *object);
27 static void sp_glyph_kerning_set(SPObject *object, unsigned int key, const gchar *value);
28 static Inkscape::XML::Node *sp_glyph_kerning_write(SPObject *object, Inkscape::XML::Node *repr, guint flags);
29 static void sp_glyph_kerning_update(SPObject *object, SPCtx *ctx, guint flags);
31 static SPObjectClass *parent_class;
33 GType sp_glyph_kerning_h_get_type(void)
34 {
35 static GType type = 0;
37 if (!type) {
38 GTypeInfo info = {
39 sizeof(SPGlyphKerningClass),
40 NULL, /* base_init */
41 NULL, /* base_finalize */
42 (GClassInitFunc) sp_glyph_kerning_class_init,
43 NULL, /* class_finalize */
44 NULL, /* class_data */
45 sizeof(SPHkern),
46 16, /* n_preallocs */
47 (GInstanceInitFunc) sp_glyph_kerning_init,
48 NULL, /* value_table */
49 };
50 type = g_type_register_static(SP_TYPE_OBJECT, "SPHkern", &info, (GTypeFlags) 0);
51 }
53 return type;
54 }
56 GType sp_glyph_kerning_v_get_type(void)
57 {
58 static GType type = 0;
60 if (!type) {
61 GTypeInfo info = {
62 sizeof(SPGlyphKerningClass),
63 NULL, /* base_init */
64 NULL, /* base_finalize */
65 (GClassInitFunc) sp_glyph_kerning_class_init,
66 NULL, /* class_finalize */
67 NULL, /* class_data */
68 sizeof(SPVkern),
69 16, /* n_preallocs */
70 (GInstanceInitFunc) sp_glyph_kerning_init,
71 NULL, /* value_table */
72 };
73 type = g_type_register_static(SP_TYPE_OBJECT, "SPVkern", &info, (GTypeFlags) 0);
74 }
76 return type;
77 }
79 static void sp_glyph_kerning_class_init(SPGlyphKerningClass *gc)
80 {
81 SPObjectClass *sp_object_class = (SPObjectClass *) gc;
83 parent_class = (SPObjectClass*)g_type_class_peek_parent(gc);
85 sp_object_class->build = sp_glyph_kerning_build;
86 sp_object_class->release = sp_glyph_kerning_release;
87 sp_object_class->set = sp_glyph_kerning_set;
88 sp_object_class->write = sp_glyph_kerning_write;
89 sp_object_class->update = sp_glyph_kerning_update;
90 }
92 static void sp_glyph_kerning_init(SPGlyphKerning *glyph)
93 {
94 //TODO: correct these values:
95 glyph->u1 = NULL;
96 glyph->g1 = NULL;
97 glyph->u2 = NULL;
98 glyph->g2 = NULL;
99 glyph->k = 0;
100 }
102 static void sp_glyph_kerning_build(SPObject *object, SPDocument *document, Inkscape::XML::Node *repr)
103 {
104 if (((SPObjectClass *) (parent_class))->build) {
105 ((SPObjectClass *) (parent_class))->build(object, document, repr);
106 }
108 sp_object_read_attr(object, "u1");
109 sp_object_read_attr(object, "g1");
110 sp_object_read_attr(object, "u2");
111 sp_object_read_attr(object, "g2");
112 sp_object_read_attr(object, "k");
113 }
115 static void sp_glyph_kerning_release(SPObject *object)
116 {
117 //SPGlyphKerning *glyph = SP_GLYPH_KERNING(object);
119 if (((SPObjectClass *) parent_class)->release) {
120 ((SPObjectClass *) parent_class)->release(object);
121 }
122 }
124 static void sp_glyph_kerning_set(SPObject *object, unsigned int key, const gchar *value)
125 {
126 SPGlyphKerning * glyphkern = (SPGlyphKerning*) object; //even if it is a VKern this will work. I did it this way just to avoind warnings.
127 double number;
128 const char* tag = (SP_IS_HKERN(object) ? "hkern" : "vkern");
130 switch (key) {
131 case SP_ATTR_U1:
132 if (glyphkern->u1) g_free(glyphkern->u1);
133 glyphkern->u1 = g_strdup(value);//todo:
134 object->requestModified(SP_OBJECT_MODIFIED_FLAG);
135 g_warning("<%s>: SP_ATTR_U1: %s", tag, value);
136 break;
137 case SP_ATTR_U2:
138 if (glyphkern->u2) g_free(glyphkern->u2);
139 glyphkern->u2 = g_strdup(value);//todo:
140 object->requestModified(SP_OBJECT_MODIFIED_FLAG);
141 g_warning("<%s>: SP_ATTR_U2: %s", tag, value);
142 break;
143 case SP_ATTR_G1:
144 if (glyphkern->g1) g_free(glyphkern->g1);
145 glyphkern->g1 = g_strdup(value);//todo:
146 object->requestModified(SP_OBJECT_MODIFIED_FLAG);
147 g_warning("<%s>: SP_ATTR_G1: %s", tag, value);
148 break;
149 case SP_ATTR_G2:
150 if (glyphkern->g2) g_free(glyphkern->g2);
151 glyphkern->g2 = g_strdup(value);//todo:
152 object->requestModified(SP_OBJECT_MODIFIED_FLAG);
153 g_warning("<%s>: SP_ATTR_G2: %s", tag, value);
154 break;
155 case SP_ATTR_K:
156 number = helperfns_read_number(value);
157 if (number != glyphkern->k){
158 glyphkern->k = number;
159 g_warning("<%s>: SP_ATTR_K: %f", tag, number);
160 object->requestModified(SP_OBJECT_MODIFIED_FLAG);
161 }
162 break;
163 default:
164 if (((SPObjectClass *) (parent_class))->set) {
165 ((SPObjectClass *) (parent_class))->set(object, key, value);
166 }
167 break;
168 }
169 ///should free tag?
170 }
172 /**
173 * * Receives update notifications.
174 * */
175 static void
176 sp_glyph_kerning_update(SPObject *object, SPCtx *ctx, guint flags)
177 {
178 SPGlyphKerning *glyph = (SPGlyphKerning *)object;
179 (void)glyph;
181 if (flags & SP_OBJECT_MODIFIED_FLAG) {
182 /* do something to trigger redisplay, updates? */
183 sp_object_read_attr(object, "u1");
184 sp_object_read_attr(object, "g1");
185 sp_object_read_attr(object, "u2");
186 sp_object_read_attr(object, "g2");
187 sp_object_read_attr(object, "k");
188 }
190 if (((SPObjectClass *) parent_class)->update) {
191 ((SPObjectClass *) parent_class)->update(object, ctx, flags);
192 }
193 }
195 #define COPY_ATTR(rd,rs,key) (rd)->setAttribute((key), rs->attribute(key));
197 static Inkscape::XML::Node *sp_glyph_kerning_write(SPObject *object, Inkscape::XML::Node *repr, guint flags)
198 {
199 // SPGlyphKerning *glyph = SP_GLYPH_KERNING(object);
201 if ((flags & SP_OBJECT_WRITE_BUILD) && !repr) {
202 Inkscape::XML::Document *xml_doc = sp_document_repr_doc(SP_OBJECT_DOCUMENT(object));
203 repr = xml_doc->createElement("svg:glyphkerning");//fix this!
204 }
206 /* I am commenting out this part because I am not certain how does it work. I will have to study it later. Juca
207 repr->setAttribute("unicode", glyph->unicode);
208 repr->setAttribute("glyph-name", glyph->glyph_name);
209 repr->setAttribute("d", glyph->d);
210 sp_repr_set_svg_double(repr, "orientation", (double) glyph->orientation);
211 sp_repr_set_svg_double(repr, "arabic-form", (double) glyph->arabic_form);
212 repr->setAttribute("lang", glyph->lang);
213 sp_repr_set_svg_double(repr, "horiz-adv-x", glyph->horiz_adv_x);
214 sp_repr_set_svg_double(repr, "vert-origin-x", glyph->vert_origin_x);
215 sp_repr_set_svg_double(repr, "vert-origin-y", glyph->vert_origin_y);
216 sp_repr_set_svg_double(repr, "vert-adv-y", glyph->vert_adv_y);
217 */
218 if (repr != SP_OBJECT_REPR(object)) {
219 COPY_ATTR(repr, object->repr, "u1");
220 COPY_ATTR(repr, object->repr, "g1");
221 COPY_ATTR(repr, object->repr, "u2");
222 COPY_ATTR(repr, object->repr, "g2");
223 COPY_ATTR(repr, object->repr, "k");
224 }
226 if (((SPObjectClass *) (parent_class))->write) {
227 ((SPObjectClass *) (parent_class))->write(object, repr, flags);
228 }
230 return repr;
231 }
233 /*
234 Local Variables:
235 mode:c++
236 c-file-style:"stroustrup"
237 c-file-offsets:((innamespace . 0)(inline-open . 0)(case-label . +))
238 indent-tabs-mode:nil
239 fill-column:99
240 End:
241 */
242 // vim: filetype=cpp:expandtab:shiftwidth=4:tabstop=8:softtabstop=4 :