/**
* Sets a value in the path object given by 'key', to 'value'. This is used
* for setting attributes and markers on a path object.
*/
static void
sp_path_set (SPObject *object, unsigned int key, const gchar *value)
{
SPPath *path;
int marker_type;
path = (SPPath *) object;
switch (key) {
case SP_ATTR_D:
if (value) {
ArtBpath *bpath;
SPCurve *curve;
bpath = sp_svg_read_path (value);
curve = sp_curve_new_from_bpath (bpath);
sp_shape_set_curve ((SPShape *) path, curve, TRUE);
sp_curve_unref (curve);
} else {
sp_shape_set_curve ((SPShape *) path, NULL, TRUE);
}
break;
case SP_PROP_MARKER:
case SP_PROP_MARKER_START:
case SP_PROP_MARKER_MID:
case SP_PROP_MARKER_END:
sp_shape_set_marker (object, key, value);
break;
default:
if (((SPObjectClass *) parent_class)->set) {
((SPObjectClass *) parent_class)->set (object, key, value);
}
break;
}
}
void sp_polygon_set(SPObject *object, unsigned int key, const gchar *value)
{
SPPolygon *polygon = SP_POLYGON(object);
switch (key) {
case SP_ATTR_POINTS: {
if (!value) {
/* fixme: The points attribute is required. We should handle its absence as per
* http://www.w3.org/TR/SVG11/implnote.html#ErrorProcessing. */
break;
}
SPCurve *curve = new SPCurve();
gboolean hascpt = FALSE;
gchar const *cptr = value;
bool has_error = false;
while (TRUE) {
gdouble x;
if (!polygon_get_value(&cptr, &x)) {
break;
}
gdouble y;
if (!polygon_get_value(&cptr, &y)) {
/* fixme: It is an error for an odd number of points to be specified. We
* should display the points up to now (as we currently do, though perhaps
* without the closepath: the spec isn't quite clear on whether to do a
* closepath or not, though I'd guess it's best not to do a closepath), but
* then flag the document as in error, as per
* http://www.w3.org/TR/SVG11/implnote.html#ErrorProcessing.
*
* (Ref: http://www.w3.org/TR/SVG11/shapes.html#PolygonElement.) */
has_error = true;
break;
}
if (hascpt) {
curve->lineto(x, y);
} else {
curve->moveto(x, y);
hascpt = TRUE;
}
}
if (has_error || *cptr != '\0') {
/* TODO: Flag the document as in error, as per
* http://www.w3.org/TR/SVG11/implnote.html#ErrorProcessing. */
} else if (hascpt) {
/* We might have done a moveto but no lineto. I'm not sure how we're supposed to represent
* a single-point polygon in SPCurve. TODO: add a testcase with only one coordinate pair */
curve->closepath();
}
sp_shape_set_curve(SP_SHAPE(polygon), curve, TRUE);
curve->unref();
break;
}
default:
if (((SPObjectClass *) parent_class)->set) {
((SPObjectClass *) parent_class)->set(object, key, value);
}
break;
}
}