diff options
Diffstat (limited to 'src/sp-guide.cpp')
| -rw-r--r-- | src/sp-guide.cpp | 34 |
1 files changed, 19 insertions, 15 deletions
diff --git a/src/sp-guide.cpp b/src/sp-guide.cpp index b55084609..a06d098d0 100644 --- a/src/sp-guide.cpp +++ b/src/sp-guide.cpp @@ -231,23 +231,27 @@ static void sp_guide_set(SPObject *object, unsigned int key, const gchar *value) break; case SP_ATTR_POSITION: { - gchar ** strarray = g_strsplit(value, ",", 2); - double newx, newy; - unsigned int success = sp_svg_number_read_d(strarray[0], &newx); - success += sp_svg_number_read_d(strarray[1], &newy); - g_strfreev (strarray); - if (success == 2) { - guide->point_on_line = Geom::Point(newx, newy); - } else if (success == 1) { - // before 0.46 style guideline definition. - const gchar *attr = object->getRepr()->attribute("orientation"); - if (attr && !strcmp(attr, "horizontal")) { - guide->point_on_line = Geom::Point(0, newx); - } else { - guide->point_on_line = Geom::Point(newx, 0); + if (value) { + gchar ** strarray = g_strsplit(value, ",", 2); + double newx, newy; + unsigned int success = sp_svg_number_read_d(strarray[0], &newx); + success += sp_svg_number_read_d(strarray[1], &newy); + g_strfreev (strarray); + if (success == 2) { + guide->point_on_line = Geom::Point(newx, newy); + } else if (success == 1) { + // before 0.46 style guideline definition. + const gchar *attr = object->getRepr()->attribute("orientation"); + if (attr && !strcmp(attr, "horizontal")) { + guide->point_on_line = Geom::Point(0, newx); + } else { + guide->point_on_line = Geom::Point(newx, 0); + } } + } else { + // default to (0,0) for bad arguments + guide->point_on_line = Geom::Point(0,0); } - // update position in non-committing way // fixme: perhaps we need to add an update method instead, and request_update here sp_guide_moveto(*guide, guide->point_on_line, false); |