src/sp-missing-glyph.cpp

   1 #ifdef HAVE_CONFIG_H
   2 # include <config.h>
   3 #endif
   4
   5 #ifdef ENABLE_SVG_FONTS
   6
   7 /*
   8  * SVG <missing-glyph> element implementation
   9  *
  10  * Author:
  11  *   Felipe C. da S. Sanches <juca@members.fsf.org>
  12  *   Abhishek Sharma
  13  *
  14  * Copyright (C) 2008, Felipe C. da S. Sanches
  15  *
  16  * Released under GNU GPL, read the file 'COPYING' for more information
  17  */
  18
  19 #include "xml/repr.h"
  20 #include "attributes.h"
  21 #include "sp-missing-glyph.h"
  22 #include "document.h"
  23
  24 static void sp_missing_glyph_class_init(SPMissingGlyphClass *gc);
  25 static void sp_missing_glyph_init(SPMissingGlyph *glyph);
  26
  27 static void sp_missing_glyph_build(SPObject *object, SPDocument *document, Inkscape::XML::Node *repr);
  28 static void sp_missing_glyph_release(SPObject *object);
  29 static void sp_missing_glyph_set(SPObject *object, unsigned int key, const gchar *value);
  30 static Inkscape::XML::Node *sp_missing_glyph_write(SPObject *object, Inkscape::XML::Document *doc, Inkscape::XML::Node *repr, guint flags);
  31
  32 static SPObjectClass *parent_class;
  33
  34 GType sp_missing_glyph_get_type(void)
  35 {
  36     static GType type = 0;
  37
  38     if (!type) {
  39         GTypeInfo info = {
  40             sizeof(SPMissingGlyphClass),
  41             NULL,       /* base_init */
  42             NULL,       /* base_finalize */
  43             (GClassInitFunc) sp_missing_glyph_class_init,
  44             NULL,       /* class_finalize */
  45             NULL,       /* class_data */
  46             sizeof(SPMissingGlyph),
  47             16, /* n_preallocs */
  48             (GInstanceInitFunc) sp_missing_glyph_init,
  49             NULL,       /* value_table */
  50         };
  51         type = g_type_register_static(SP_TYPE_OBJECT, "SPMissingGlyph", &info, (GTypeFlags) 0);
  52     }
  53
  54     return type;
  55 }
  56
  57 static void sp_missing_glyph_class_init(SPMissingGlyphClass *gc)
  58 {
  59     SPObjectClass *sp_object_class = (SPObjectClass *) gc;
  60
  61     parent_class = (SPObjectClass*)g_type_class_peek_parent(gc);
  62
  63     sp_object_class->build = sp_missing_glyph_build;
  64     sp_object_class->release = sp_missing_glyph_release;
  65     sp_object_class->set = sp_missing_glyph_set;
  66     sp_object_class->write = sp_missing_glyph_write;
  67 }
  68
  69 static void sp_missing_glyph_init(SPMissingGlyph *glyph)
  70 {
  71 //TODO: correct these values:
  72     glyph->d = 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_missing_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     object->readAttr( "d" );
  86     object->readAttr( "horiz-adv-x" );
  87     object->readAttr( "vert-origin-x" );
  88     object->readAttr( "vert-origin-y" );
  89     object->readAttr( "vert-adv-y" );
  90 }
  91
  92 static void sp_missing_glyph_release(SPObject *object)
  93 {
  94     //SPMissingGlyph *glyph = SP_MISSING_GLYPH(object);
  95
  96     if (((SPObjectClass *) parent_class)->release) {
  97         ((SPObjectClass *) parent_class)->release(object);
  98     }
  99 }
 100
 101 static void sp_missing_glyph_set(SPObject *object, unsigned int key, const gchar *value)
 102 {
 103     SPMissingGlyph *glyph = SP_MISSING_GLYPH(object);
 104
 105     switch (key) {
 106         case SP_ATTR_D:
 107         {
 108             if (glyph->d) {
 109                 g_free(glyph->d);
 110             }
 111             glyph->d = g_strdup(value);
 112             object->requestModified(SP_OBJECT_MODIFIED_FLAG);
 113             break;
 114         }
 115         case SP_ATTR_HORIZ_ADV_X:
 116         {
 117             double number = value ? g_ascii_strtod(value, 0) : 0;
 118             if (number != glyph->horiz_adv_x){
 119                 glyph->horiz_adv_x = number;
 120                 object->requestModified(SP_OBJECT_MODIFIED_FLAG);
 121             }
 122             break;
 123         }
 124         case SP_ATTR_VERT_ORIGIN_X:
 125         {
 126             double number = value ? g_ascii_strtod(value, 0) : 0;
 127             if (number != glyph->vert_origin_x){
 128                 glyph->vert_origin_x = number;
 129                 object->requestModified(SP_OBJECT_MODIFIED_FLAG);
 130             }
 131             break;
 132         }
 133         case SP_ATTR_VERT_ORIGIN_Y:
 134         {
 135             double number = value ? g_ascii_strtod(value, 0) : 0;
 136             if (number != glyph->vert_origin_y){
 137                 glyph->vert_origin_y = number;
 138                 object->requestModified(SP_OBJECT_MODIFIED_FLAG);
 139             }
 140             break;
 141         }
 142         case SP_ATTR_VERT_ADV_Y:
 143         {
 144             double number = value ? g_ascii_strtod(value, 0) : 0;
 145             if (number != glyph->vert_adv_y){
 146                 glyph->vert_adv_y = number;
 147                 object->requestModified(SP_OBJECT_MODIFIED_FLAG);
 148             }
 149             break;
 150         }
 151         default:
 152         {
 153             if (((SPObjectClass *) (parent_class))->set) {
 154                 ((SPObjectClass *) (parent_class))->set(object, key, value);
 155             }
 156             break;
 157         }
 158     }
 159 }
 160
 161 #define COPY_ATTR(rd,rs,key) (rd)->setAttribute((key), rs->attribute(key));
 162
 163 static Inkscape::XML::Node *sp_missing_glyph_write(SPObject *object, Inkscape::XML::Document *xml_doc, Inkscape::XML::Node *repr, guint flags)
 164 {
 165 //    SPMissingGlyph *glyph = SP_MISSING_GLYPH(object);
 166
 167     if ((flags & SP_OBJECT_WRITE_BUILD) && !repr) {
 168         repr = xml_doc->createElement("svg:glyph");
 169     }
 170
 171 /* I am commenting out this part because I am not certain how does it work. I will have to study it later. Juca
 172     repr->setAttribute("d", glyph->d);
 173     sp_repr_set_svg_double(repr, "horiz-adv-x", glyph->horiz_adv_x);
 174     sp_repr_set_svg_double(repr, "vert-origin-x", glyph->vert_origin_x);
 175     sp_repr_set_svg_double(repr, "vert-origin-y", glyph->vert_origin_y);
 176     sp_repr_set_svg_double(repr, "vert-adv-y", glyph->vert_adv_y);
 177 */
 178     if (repr != SP_OBJECT_REPR(object)) {
 179
 180         // All the COPY_ATTR functions below use
 181         //  XML Tree directly while they shouldn't.
 182         COPY_ATTR(repr, object->getRepr(), "d");
 183         COPY_ATTR(repr, object->getRepr(), "horiz-adv-x");
 184         COPY_ATTR(repr, object->getRepr(), "vert-origin-x");
 185         COPY_ATTR(repr, object->getRepr(), "vert-origin-y");
 186         COPY_ATTR(repr, object->getRepr(), "vert-adv-y");
 187     }
 188
 189     if (((SPObjectClass *) (parent_class))->write) {
 190         ((SPObjectClass *) (parent_class))->write(object, xml_doc, repr, flags);
 191     }
 192
 193     return repr;
 194 }
 195 #endif //#ifdef ENABLE_SVG_FONTS
 196 /*
 197   Local Variables:
 198   mode:c++
 199   c-file-style:"stroustrup"
 200   c-file-offsets:((innamespace . 0)(inline-open . 0)(case-label . +))
 201   indent-tabs-mode:nil
 202   fill-column:99
 203   End:
 204 */
 205 // vim: filetype=cpp:expandtab:shiftwidth=4:tabstop=8:softtabstop=4 :