src/sp-glyph.cpp

   1 #define __SP_ANCHOR_C__
   2
   3 /*
   4  * SVG <glyph> 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  */
  13
  14 #include "xml/repr.h"
  15 #include "attributes.h"
  16 #include "sp-glyph.h"
  17 #include "document.h"
  18
  19 static void sp_glyph_class_init(SPGlyphClass *gc);
  20 static void sp_glyph_init(SPGlyph *glyph);
  21
  22 static void sp_glyph_build(SPObject *object, SPDocument *document, Inkscape::XML::Node *repr);
  23 static void sp_glyph_release(SPObject *object);
  24 static void sp_glyph_set(SPObject *object, unsigned int key, const gchar *value);
  25 static Inkscape::XML::Node *sp_glyph_write(SPObject *object, Inkscape::XML::Node *repr, guint flags);
  26
  27 static SPObjectClass *parent_class;
  28
  29 GType sp_glyph_get_type(void)
  30 {
  31     static GType type = 0;
  32
  33     if (!type) {
  34         GTypeInfo info = {
  35             sizeof(SPGlyphClass),
  36             NULL,       /* base_init */
  37             NULL,       /* base_finalize */
  38             (GClassInitFunc) sp_glyph_class_init,
  39             NULL,       /* class_finalize */
  40             NULL,       /* class_data */
  41             sizeof(SPGlyph),
  42             16, /* n_preallocs */
  43             (GInstanceInitFunc) sp_glyph_init,
  44             NULL,       /* value_table */
  45         };
  46         type = g_type_register_static(SP_TYPE_OBJECT, "SPGlyph", &info, (GTypeFlags) 0);
  47     }
  48
  49     return type;
  50 }
  51
  52 static void sp_glyph_class_init(SPGlyphClass *gc)
  53 {
  54     SPObjectClass *sp_object_class = (SPObjectClass *) gc;
  55
  56     parent_class = (SPObjectClass *) g_type_class_ref(SP_TYPE_OBJECT);
  57
  58     sp_object_class->build = sp_glyph_build;
  59     sp_object_class->release = sp_glyph_release;
  60     sp_object_class->set = sp_glyph_set;
  61     sp_object_class->write = sp_glyph_write;
  62 }
  63
  64 static void sp_glyph_init(SPGlyph *glyph)
  65 {
  66 //TODO: correct these values:
  67     glyph->unicode = NULL;
  68     glyph->glyph_name = NULL;
  69     glyph->d = NULL;
  70     glyph->orientation = NULL;
  71     glyph->arabic_form = NULL;
  72     glyph->lang = NULL;
  73     glyph->horiz_adv_x = 0;
  74     glyph->vert_origin_x = 0;
  75     glyph->vert_origin_y = 0;
  76     glyph->vert_adv_y = 0;
  77 }
  78
  79 static void sp_glyph_build(SPObject *object, SPDocument *document, Inkscape::XML::Node *repr)
  80 {
  81     if (((SPObjectClass *) (parent_class))->build) {
  82         ((SPObjectClass *) (parent_class))->build(object, document, repr);
  83     }
  84
  85     sp_object_read_attr(object, "unicode");
  86     sp_object_read_attr(object, "glyph-name");
  87     sp_object_read_attr(object, "d");
  88     sp_object_read_attr(object, "orientation");
  89     sp_object_read_attr(object, "arabic-form");
  90     sp_object_read_attr(object, "lang");
  91     sp_object_read_attr(object, "horiz-adv-x");
  92     sp_object_read_attr(object, "vert-origin-x");
  93     sp_object_read_attr(object, "vert-origin-y");
  94     sp_object_read_attr(object, "vert-adv-y");
  95 }
  96
  97 static void sp_glyph_release(SPObject *object)
  98 {
  99     //SPGlyph *glyph = SP_GLYPH(object);
 100
 101     if (((SPObjectClass *) parent_class)->release) {
 102         ((SPObjectClass *) parent_class)->release(object);
 103     }
 104 }
 105
 106 //ToDo: use helper-fns.h
 107 inline double helperfns_read_number(gchar const *value) {
 108     if (!value) return 0;
 109     char *end;
 110     double ret = g_ascii_strtod(value, &end);
 111     if (*end) {
 112         g_warning("Unable to convert \"%s\" to number", value);
 113         // We could leave this out, too. If strtod can't convert
 114         // anything, it will return zero.
 115         ret = 0;
 116     }
 117     return ret;
 118 }
 119
 120 static void sp_glyph_set(SPObject *object, unsigned int key, const gchar *value)
 121 {
 122     SPGlyph *glyph = SP_GLYPH(object);
 123     double number;
 124
 125     switch (key) {
 126         case SP_ATTR_UNICODE:
 127             if (glyph->unicode) g_free(glyph->unicode);
 128             glyph->unicode = g_strdup(value);
 129             object->requestModified(SP_OBJECT_MODIFIED_FLAG);
 130 g_warning("SP_ATTR_UNICODE: %s", value);
 131              break;
 132         case SP_ATTR_GLYPH_NAME:
 133             if (glyph->glyph_name) g_free(glyph->glyph_name);
 134             glyph->glyph_name = g_strdup(value);
 135             object->requestModified(SP_OBJECT_MODIFIED_FLAG);
 136 g_warning("SP_ATTR_GLYPH_NAME: %s", value);
 137              break;
 138         case SP_ATTR_D:
 139             if (glyph->d) g_free(glyph->d);
 140             glyph->d = g_strdup(value);
 141             object->requestModified(SP_OBJECT_MODIFIED_FLAG);
 142 g_warning("SP_ATTR_D: %s", value);
 143             break;
 144         case SP_ATTR_ORIENTATION:
 145             if (glyph->orientation) g_free(glyph->orientation);
 146             glyph->orientation = g_strdup(value);
 147             object->requestModified(SP_OBJECT_MODIFIED_FLAG);
 148 g_warning("SP_ATTR_ORIENTATION: %s", value);
 149             break;
 150         case SP_ATTR_ARABIC_FORM:
 151             if (glyph->arabic_form) g_free(glyph->arabic_form);
 152             glyph->arabic_form = g_strdup(value);
 153             object->requestModified(SP_OBJECT_MODIFIED_FLAG);
 154 g_warning("SP_ATTR_ARABIC_FORM: %s", value);
 155             break;
 156         case SP_ATTR_LANG:
 157             if (glyph->lang) g_free(glyph->lang);
 158             glyph->lang = g_strdup(value);
 159 g_warning("SP_ATTR_LANG: %s", value);
 160             object->requestModified(SP_OBJECT_MODIFIED_FLAG);
 161             break;
 162         case SP_ATTR_HORIZ_ADV_X:
 163             number = helperfns_read_number(value);
 164             if (number != glyph->horiz_adv_x){
 165                 glyph->horiz_adv_x = number;
 166 g_warning("SP_ATTR_HORIZ_ADV_X: %f", number);
 167                 object->requestModified(SP_OBJECT_MODIFIED_FLAG);
 168             }
 169             break;
 170         case SP_ATTR_VERT_ORIGIN_X:
 171             number = helperfns_read_number(value);
 172             if (number != glyph->vert_origin_x){
 173                 glyph->vert_origin_x = number;
 174 g_warning("SP_ATTR_VERT_ORIGIN_X: %f", number);
 175                 object->requestModified(SP_OBJECT_MODIFIED_FLAG);
 176             }
 177             break;
 178         case SP_ATTR_VERT_ORIGIN_Y:
 179             number = helperfns_read_number(value);
 180             if (number != glyph->vert_origin_y){
 181                 glyph->vert_origin_y = number;
 182 g_warning("SP_ATTR_VERT_ORIGIN_Y: %f", number);
 183                 object->requestModified(SP_OBJECT_MODIFIED_FLAG);
 184             }
 185             break;
 186         case SP_ATTR_VERT_ADV_Y:
 187             number = helperfns_read_number(value);
 188             if (number != glyph->vert_adv_y){
 189                 glyph->vert_adv_y = number;
 190 g_warning("SP_ATTR_VERT_ADV_Y: %f", number);
 191                 object->requestModified(SP_OBJECT_MODIFIED_FLAG);
 192             }
 193             break;
 194         default:
 195             if (((SPObjectClass *) (parent_class))->set) {
 196                 ((SPObjectClass *) (parent_class))->set(object, key, value);
 197             }
 198             break;
 199     }
 200 }
 201
 202 #define COPY_ATTR(rd,rs,key) (rd)->setAttribute((key), rs->attribute(key));
 203
 204 static Inkscape::XML::Node *sp_glyph_write(SPObject *object, Inkscape::XML::Node *repr, guint flags)
 205 {
 206     SPGlyph *glyph = SP_GLYPH(object);
 207
 208     if ((flags & SP_OBJECT_WRITE_BUILD) && !repr) {
 209         Inkscape::XML::Document *xml_doc = sp_document_repr_doc(SP_OBJECT_DOCUMENT(object));
 210         repr = xml_doc->createElement("svg:glyph");
 211     }
 212
 213     repr->setAttribute("unicode", glyph->unicode);
 214     repr->setAttribute("glyph-name", glyph->glyph_name);
 215     repr->setAttribute("d", glyph->d);
 216     repr->setAttribute("orientation", glyph->orientation);
 217     repr->setAttribute("arabic-form", glyph->arabic_form);
 218     repr->setAttribute("lang", glyph->lang);
 219     sp_repr_set_svg_double(repr, "horiz-adv-x", glyph->horiz_adv_x);
 220     sp_repr_set_svg_double(repr, "vert-origin-x", glyph->vert_origin_x);
 221     sp_repr_set_svg_double(repr, "vert-origin-y", glyph->vert_origin_y);
 222     sp_repr_set_svg_double(repr, "vert-adv-y", glyph->vert_adv_y);
 223
 224     if (repr != SP_OBJECT_REPR(object)) {
 225         COPY_ATTR(repr, object->repr, "unicode");
 226         COPY_ATTR(repr, object->repr, "glyph-name");
 227         COPY_ATTR(repr, object->repr, "d");
 228         COPY_ATTR(repr, object->repr, "orientation");
 229         COPY_ATTR(repr, object->repr, "arabic-form");
 230         COPY_ATTR(repr, object->repr, "lang");
 231         COPY_ATTR(repr, object->repr, "horiz-adv-x");
 232         COPY_ATTR(repr, object->repr, "vert-origin-x");
 233         COPY_ATTR(repr, object->repr, "vert-origin-y");
 234         COPY_ATTR(repr, object->repr, "vert-adv-y");
 235     }
 236
 237     if (((SPObjectClass *) (parent_class))->write) {
 238         ((SPObjectClass *) (parent_class))->write(object, repr, flags);
 239     }
 240
 241     return repr;
 242 }
 243
 244 /*
 245   Local Variables:
 246   mode:c++
 247   c-file-style:"stroustrup"
 248   c-file-offsets:((innamespace . 0)(inline-open . 0)(case-label . +))
 249   indent-tabs-mode:nil
 250   fill-column:99
 251   End:
 252 */
 253 // vim: filetype=cpp:expandtab:shiftwidth=4:tabstop=8:softtabstop=4 :