void
delete_arcarrow(F_arc *arc, int point_num)
{
if (arc->type == T_PIE_WEDGE_ARC)
return;;
if (point_num == 0) { /* backward arrow */
if (!arc->back_arrow)
return;
draw_arc(arc, ERASE);
saved_back_arrow=arc->back_arrow;
if (saved_for_arrow && saved_for_arrow != arc->for_arrow)
free((char *) saved_for_arrow);
saved_for_arrow = NULL;
arc->back_arrow = NULL;
redisplay_arc(arc);
} else if (point_num == 2) {/* for_arrow */
if (!arc->for_arrow)
return;
draw_arc(arc, ERASE);
saved_for_arrow=arc->for_arrow;
if (saved_back_arrow && saved_back_arrow != arc->back_arrow)
free((char *) saved_back_arrow);
saved_back_arrow = NULL;
arc->for_arrow = NULL;
redisplay_arc(arc);
} else
return;
clean_up();
set_last_arcpointnum(point_num);
set_latestarc(arc);
set_action_object(F_DELETE_ARROW_HEAD, O_ARC);
set_modifiedflag();
}
static void
place_arc_x(int x, int y)
{
canvas_leftbut_proc = null_proc;
canvas_middlebut_proc = null_proc;
canvas_rightbut_proc = null_proc;
canvas_locmove_proc = null_proc;
canvas_ref_proc = null_proc;
adjust_pos(x, y, fix_x, fix_y, &x, &y);
translate_arc(new_a, x - fix_x, y - fix_y);
if (return_proc == copy_selected) {
add_arc(new_a);
} else {
list_add_arc(&objects.arcs, new_a);
clean_up();
set_lastposition(fix_x, fix_y);
set_newposition(x, y);
set_action_object(F_MOVE, O_ARC);
set_latestarc(new_a);
set_modifiedflag();
}
redisplay_arc(new_a);
/* turn back on all relevant markers */
update_markers(new_objmask);
(*return_proc) ();
draw_mousefun_canvas();
}
static void
add_arcarrow(F_arc *arc, int point_num)
{
/* only allow arrowheads on open arc */
if (arc->type == T_PIE_WEDGE_ARC)
return;
if (point_num == 0) { /* backward arrow */
if (arc->back_arrow)
return;
arc->back_arrow = backward_arrow();
redisplay_arc(arc);
} else if (point_num == 2) {/* for_arrow */
if (arc->for_arrow)
return;
arc->for_arrow = forward_arrow();
redisplay_arc(arc);
} else
return;
clean_up();
set_last_arcpointnum(point_num);
set_latestarc(arc);
set_action_object(F_ADD_ARROW_HEAD, O_ARC);
set_modifiedflag();
}
