static void
place_arc(int x, int y)
{
elastic_movearc(new_a);
/* erase last lengths if appres.showlengths is true */
erase_lengths();
place_arc_x(x, y);
}
static void
array_place_arc(int x, int y)
{
int i, j, delta_x, delta_y, start_x, start_y;
int nx, ny;
F_arc *save_arc;
elastic_movearc(new_a);
/* erase last lengths if appres.showlengths is true */
erase_lengths();
tail(&objects, &object_tails);
save_arc = new_a;
if ((!cur_numxcopies) && (!cur_numycopies)) {
place_arc(x, y);
} else {
delta_x = cur_x - fix_x;
delta_y = cur_y - fix_y;
start_x = cur_x - delta_x;
start_y = cur_y - delta_y;
if ((cur_numxcopies < 2) && (cur_numycopies < 2)) { /* special cases */
if (cur_numxcopies > 0) {
place_arc_x(start_x+delta_x, start_y);
new_a = copy_arc(cur_a);
}
if (cur_numycopies > 0) {
place_arc_x(start_x, start_y+delta_y);
new_a = copy_arc(cur_a);
}
} else {
nx = cur_numxcopies;
if (nx == 0)
nx++;
ny = cur_numycopies;
if (ny == 0)
ny++;
for (i = 0, x = start_x; i < nx; i++, x+=delta_x) {
for (j = 0, y = start_y; j < ny; j++, y+=delta_y) {
if (i || j ) {
place_arc_x(x, y);
new_a = copy_arc(cur_a);
}
}
}
}
}
/* put all new arcs in the saved objects structure for undo */
saved_objects.arcs = save_arc;
set_action_object(F_ADD, O_ALL_OBJECT);
/* turn back on all relevant markers */
update_markers(new_objmask);
}
void
init_arcdragging(F_arc *a, int x, int y)
{
new_a = a;
fix_x = cur_x = x;
fix_y = cur_y = y;
canvas_locmove_proc = moving_arc;
canvas_ref_proc = elastic_movenewarc;
canvas_leftbut_proc = place_arc;
canvas_middlebut_proc = array_place_arc;
canvas_rightbut_proc = cancel_drag_arc;
set_action_on();
elastic_movearc(new_a);
}
static void
cancel_drag_arc(void)
{
canvas_ref_proc = canvas_locmove_proc = null_proc;
elastic_movearc(new_a);
/* erase last lengths if appres.showlengths is true */
erase_lengths();
if (return_proc == copy_selected) {
free_arc(&new_a);
} else {
list_add_arc(&objects.arcs, new_a);
redisplay_arc(new_a);
}
/* turn back on all relevant markers */
update_markers(new_objmask);
(*return_proc) ();
draw_mousefun_canvas();
}
void
elastic_movenewarc(void)
{
elastic_movearc(new_a);
}
