ncurses/tty/tty_update.c

1592  * (lav): added more cases, used dl/il when bot==maxy and in csr case.
1600 /* Try to scroll up assuming given csr (miny, maxy). Returns ERR on failure */
1602 scroll_csr_forward(int n, int top, int bot, int miny, int maxy, NCURSES_CH_T blank)
1606     if (n == 1 && scroll_forward && top == miny && bot == maxy) {
1611     } else if (n == 1 && delete_line && bot == maxy) {
1616     } else if (parm_index && top == miny && bot == maxy) {
1621     } else if (parm_delete_line && bot == maxy) {
1626     } else if (scroll_forward && top == miny && bot == maxy) {
1633     } else if (delete_line && bot == maxy) {
1656 /* Try to scroll down assuming given csr (miny, maxy). Returns ERR on failure */
1659 scroll_csr_backward(int n, int top, int bot, int miny, int maxy,
1664     if (n == 1 && scroll_reverse && top == miny && bot == maxy) {
1669     } else if (n == 1 && insert_line && bot == maxy) {
1674     } else if (parm_rindex && top == miny && bot == maxy) {
1679     } else if (parm_insert_line && bot == maxy) {
1684     } else if (scroll_reverse && top == miny && bot == maxy) {
1691     } else if (insert_line && bot == maxy) {
1766 _nc_scrolln(int n, int top, int bot, int maxy)
1774     TR(TRACE_MOVE, ("mvcur_scrolln(%d, %d, %d, %d)", n, top, bot, maxy));
1790 	res = scroll_csr_forward(n, top, bot, 0, maxy, blank);
1812 	    putp(TPARM_2(change_scroll_region, 0, maxy));
1823 	    && (non_dest_scroll_region || (memory_below && bot == maxy))) {
1825 	    if (bot == maxy && clr_eos) {
1837 	res = scroll_csr_backward(-n, top, bot, 0, maxy, blank);
1858 	    putp(TPARM_2(change_scroll_region, 0, maxy));