src/sp-polyline.cpp

   1 #define __SP_POLYLINE_C__
   2
   3 /*
   4  * SVG <polyline> implementation
   5  *
   6  * Authors:
   7  *   Lauris Kaplinski <lauris@kaplinski.com>
   8  *
   9  * Copyright (C) 1999-2002 Lauris Kaplinski
  10  *
  11  * Released under GNU GPL, read the file 'COPYING' for more information
  12  */
  13
  14 #include "config.h"
  15
  16 #include "attributes.h"
  17 #include "sp-polyline.h"
  18 #include "display/curve.h"
  19 #include <glibmm/i18n.h>
  20 #include "xml/repr.h"
  21 #include "document.h"
  22
  23 //static void sp_polyline_class_init (SPPolyLineClass *klass);
  24 //static void sp_polyline_init (SPPolyLine *polyline);
  25
  26 //static void sp_polyline_build (SPObject * object, SPDocument * document, Inkscape::XML::Node * repr);
  27 //static void sp_polyline_set (SPObject *object, unsigned int key, const gchar *value);
  28 //static Inkscape::XML::Node *sp_polyline_write (SPObject *object, Inkscape::XML::Document *doc, Inkscape::XML::Node *repr, guint flags);
  29
  30 //static gchar * sp_polyline_description (SPItem * item);
  31
  32 //static SPShapeClass *parent_class;
  33
  34 SPShapeClass * SPPolyLineClass::static_parent_class=0;
  35
  36 GType
  37 SPPolyLine::sp_polyline_get_type (void)
  38 {
  39         static GType polyline_type = 0;
  40
  41         if (!polyline_type) {
  42                 GTypeInfo polyline_info = {
  43                         sizeof (SPPolyLineClass),
  44                         NULL,   /* base_init */
  45                         NULL,   /* base_finalize */
  46                         (GClassInitFunc) SPPolyLineClass::sp_polyline_class_init,
  47                         NULL,   /* klass_finalize */
  48                         NULL,   /* klass_data */
  49                         sizeof (SPPolyLine),
  50                         16,     /* n_preallocs */
  51                         (GInstanceInitFunc) sp_polyline_init,
  52                         NULL,   /* value_table */
  53                 };
  54                 polyline_type = g_type_register_static (SP_TYPE_SHAPE, "SPPolyLine", &polyline_info, (GTypeFlags)0);
  55         }
  56         return polyline_type;
  57 }
  58
  59 void
  60 SPPolyLineClass::sp_polyline_class_init (SPPolyLineClass *klass)
  61 {
  62         GObjectClass * gobject_class;
  63         SPObjectClass * sp_object_class;
  64         SPItemClass * item_class;
  65
  66         gobject_class = (GObjectClass *) klass;
  67         sp_object_class = (SPObjectClass *) klass;
  68         item_class = (SPItemClass *) klass;
  69
  70         static_parent_class = (SPShapeClass *)g_type_class_ref (SP_TYPE_SHAPE);
  71
  72         sp_object_class->build = SPPolyLine::sp_polyline_build;
  73         sp_object_class->set = SPPolyLine::sp_polyline_set;
  74         sp_object_class->write = SPPolyLine::sp_polyline_write;
  75
  76         item_class->description = SPPolyLine::sp_polyline_description;
  77 }
  78
  79 void
  80 SPPolyLine::sp_polyline_init (SPPolyLine * /*polyline*/)
  81 {
  82     /* Nothing here */
  83 }
  84
  85 void
  86 SPPolyLine::sp_polyline_build (SPObject * object, SPDocument * document, Inkscape::XML::Node * repr)
  87 {
  88
  89         if (((SPObjectClass *) SPPolyLineClass::static_parent_class)->build)
  90                 ((SPObjectClass *) SPPolyLineClass::static_parent_class)->build (object, document, repr);
  91
  92         object->readAttr( "points");
  93 }
  94
  95 void
  96 SPPolyLine::sp_polyline_set (SPObject *object, unsigned int key, const gchar *value)
  97 {
  98         SPPolyLine *polyline;
  99
 100         polyline = SP_POLYLINE (object);
 101
 102         switch (key) {
 103         case SP_ATTR_POINTS: {
 104                 SPCurve * curve;
 105                 const gchar * cptr;
 106                 char * eptr;
 107                 gboolean hascpt;
 108
 109                 if (!value) break;
 110                 curve = new SPCurve ();
 111                 hascpt = FALSE;
 112
 113                 cptr = value;
 114                 eptr = NULL;
 115
 116                 while (TRUE) {
 117                         gdouble x, y;
 118
 119                         while (*cptr != '\0' && (*cptr == ',' || *cptr == '\x20' || *cptr == '\x9' || *cptr == '\xD' || *cptr == '\xA')) {
 120                                 cptr++;
 121                         }
 122                         if (!*cptr) break;
 123
 124                         x = g_ascii_strtod (cptr, &eptr);
 125                         if (eptr == cptr) break;
 126                         cptr = eptr;
 127
 128                         while (*cptr != '\0' && (*cptr == ',' || *cptr == '\x20' || *cptr == '\x9' || *cptr == '\xD' || *cptr == '\xA')) {
 129                                 cptr++;
 130                         }
 131                         if (!*cptr) break;
 132
 133                         y = g_ascii_strtod (cptr, &eptr);
 134                         if (eptr == cptr) break;
 135                         cptr = eptr;
 136                         if (hascpt) {
 137                                 curve->lineto(x, y);
 138                         } else {
 139                                 curve->moveto(x, y);
 140                                 hascpt = TRUE;
 141                         }
 142                 }
 143
 144                 (SP_SHAPE (polyline))->setCurve (curve, TRUE);
 145                 curve->unref();
 146                 break;
 147         }
 148         default:
 149                 if (((SPObjectClass *) SPPolyLineClass::static_parent_class)->set)
 150                         ((SPObjectClass *) SPPolyLineClass::static_parent_class)->set (object, key, value);
 151                 break;
 152         }
 153 }
 154
 155 Inkscape::XML::Node *
 156 SPPolyLine::sp_polyline_write (SPObject *object, Inkscape::XML::Document *xml_doc, Inkscape::XML::Node *repr, guint flags)
 157 {
 158         SPPolyLine *polyline;
 159
 160         polyline = SP_POLYLINE (object);
 161
 162         if ((flags & SP_OBJECT_WRITE_BUILD) && !repr) {
 163                 repr = xml_doc->createElement("svg:polyline");
 164         }
 165
 166         if (repr != SP_OBJECT_REPR (object)) {
 167                 repr->mergeFrom(SP_OBJECT_REPR (object), "id");
 168         }
 169
 170         if (((SPObjectClass *) (SPPolyLineClass::static_parent_class))->write)
 171                 ((SPObjectClass *) (SPPolyLineClass::static_parent_class))->write (object, xml_doc, repr, flags);
 172
 173         return repr;
 174 }
 175
 176 gchar *
 177 SPPolyLine::sp_polyline_description(SPItem */*item*/)
 178 {
 179     return g_strdup(_("<b>Polyline</b>"));
 180 }