/** Find a connectionpoint sufficiently close to the given point.
*
* @param ddisp The display to search
* @param pos A position in the display, typically mouse position
* @param notthis If not null, an object to ignore (typically the object
* connecting)
* @param snap_to_objects Whether snapping to objects should be in effect
* in this call (anded to the display-wide setting).
*/
ConnectionPoint *
object_find_connectpoint_display(DDisplay *ddisp, Point *pos,
DiaObject *notthis, gboolean snap_to_objects)
{
real distance;
ConnectionPoint *connectionpoint;
GList *avoid = NULL;
DiaObject *obj_here;
distance =
diagram_find_closest_connectionpoint(ddisp->diagram, &connectionpoint,
pos, notthis);
distance = ddisplay_transform_length(ddisp, distance);
if (distance < OBJECT_CONNECT_DISTANCE) {
return connectionpoint;
}
if (ddisp->mainpoint_magnetism && snap_to_objects) {
DiaObject *parent;
/* Try to find an all-object CP. */
/* Don't pick a parent, though */
avoid = g_list_prepend(avoid, notthis);
for (parent = notthis->parent; parent != NULL; parent = parent->parent) {
avoid = g_list_prepend(avoid, parent);
}
obj_here = diagram_find_clicked_object_except(ddisp->diagram, pos, 0.00001, avoid);
if (obj_here != NULL) {
int i;
for (i = 0; i < dia_object_get_num_connections(obj_here); ++i) {
if (obj_here->connections[i]->flags & CP_FLAG_ANYPLACE) {
g_list_free(avoid);
return obj_here->connections[i];
}
}
}
}
return NULL;
}
static PyObject *
PyDiaDiagram_FindClosestConnectionPoint(PyDiaDiagram *self, PyObject *args)
{
Point p;
double dist;
ConnectionPoint *cpoint;
PyObject *ret;
PyDiaObject *obj = NULL;
if (!PyArg_ParseTuple(args, "dd|O!:Diagram.find_closest_connectionpoint",
&p.x, &p.y, PyDiaObject_Type, &obj))
return NULL;
dist = diagram_find_closest_connectionpoint(self->dia, &cpoint, &p,
obj ? obj->object : NULL);
ret = PyTuple_New(2);
PyTuple_SetItem(ret, 0, PyFloat_FromDouble(dist));
if (cpoint)
PyTuple_SetItem(ret, 1, PyDiaConnectionPoint_New(cpoint));
else {
Py_INCREF(Py_None);
PyTuple_SetItem(ret, 1, Py_None);
}
return ret;
}
