| … | |
… | |
| 613 | want_refresh = 1; |
613 | want_refresh = 1; |
| 614 | num_scr += count; |
614 | num_scr += count; |
| 615 | |
615 | |
| 616 | if (count > 0 |
616 | if (count > 0 |
| 617 | && row1 == 0 |
617 | && row1 == 0 |
| 618 | && row2 == nrow - 1 |
|
|
| 619 | && (current_screen == PRIMARY || OPTION (Opt_secondaryScroll))) |
618 | && (current_screen == PRIMARY || OPTION (Opt_secondaryScroll))) |
| 620 | { |
619 | { |
| 621 | nsaved = min (nsaved + count, saveLines); |
620 | nsaved = min (nsaved + count, saveLines); |
| 622 | |
621 | |
| 623 | HOOK_INVOKE ((this, HOOK_SCROLL_BACK, DT_INT, count, DT_INT, nsaved, DT_END)); |
622 | HOOK_INVOKE ((this, HOOK_SCROLL_BACK, DT_INT, count, DT_INT, nsaved, DT_END)); |
| 624 | |
623 | |
|
|
624 | // scroll everything up 'count' lines |
| 625 | term_start = (term_start + count) % total_rows; |
625 | term_start = (term_start + count) % total_rows; |
| 626 | |
626 | |
|
|
627 | { |
|
|
628 | // severe bottommost scrolled line |
|
|
629 | line_t &l = ROW(row2 - count); |
|
|
630 | l.touch (); |
|
|
631 | l.is_longer (0); |
|
|
632 | } |
|
|
633 | |
|
|
634 | // erase newly scorlled-in lines |
|
|
635 | for (int i = count; i; --i ) |
|
|
636 | { |
|
|
637 | // basically this is a slightly optimized scr_blank_screen_mem |
|
|
638 | // it is worth the effort on slower machines |
|
|
639 | line_t &l = ROW(nrow - i); |
|
|
640 | |
|
|
641 | scr_blank_line (l, 0, l.l, rstyle); |
|
|
642 | |
|
|
643 | l.l = 0; |
|
|
644 | l.f = 0; |
|
|
645 | } |
|
|
646 | |
|
|
647 | // now copy lines below the scroll region bottom to the |
|
|
648 | // bottom of the screen again, so they look as if they |
|
|
649 | // hadn't moved. |
|
|
650 | for (int i = nrow; --i > row2; ) |
|
|
651 | { |
|
|
652 | line_t &l1 = ROW(i - count); |
|
|
653 | line_t &l2 = ROW(i); |
|
|
654 | |
|
|
655 | ::swap (l1, l2); |
|
|
656 | l2.touch (); |
|
|
657 | } |
|
|
658 | |
|
|
659 | // move and/or clear selection, if any |
| 627 | if (selection.op && current_screen == selection.screen) |
660 | if (selection.op && current_screen == selection.screen) |
| 628 | { |
661 | { |
| 629 | selection.beg.row -= count; |
662 | selection.beg.row -= count; |
| 630 | selection.end.row -= count; |
663 | selection.end.row -= count; |
| 631 | selection.mark.row -= count; |
664 | selection.mark.row -= count; |
| … | |
… | |
| 637 | CLEAR_ALL_SELECTION (); |
670 | CLEAR_ALL_SELECTION (); |
| 638 | selection.op = SELECTION_CLEAR; |
671 | selection.op = SELECTION_CLEAR; |
| 639 | } |
672 | } |
| 640 | } |
673 | } |
| 641 | |
674 | |
| 642 | for (int i = count; i--; ) |
675 | // finally move the view window, if desired |
| 643 | { |
|
|
| 644 | // basically thi is a slightly optimized scr_blank_screen_mem |
|
|
| 645 | // it is worth the effort on slower machines |
|
|
| 646 | line_t &l = ROW(row2 - i); |
|
|
| 647 | |
|
|
| 648 | scr_blank_line (l, 0, l.l, rstyle); |
|
|
| 649 | |
|
|
| 650 | l.l = 0; |
|
|
| 651 | l.f = 0; |
|
|
| 652 | } |
|
|
| 653 | |
|
|
| 654 | if (OPTION (Opt_scrollWithBuffer) |
676 | if (OPTION (Opt_scrollWithBuffer) |
| 655 | && view_start != 0 |
677 | && view_start != 0 |
| 656 | && view_start != saveLines) |
678 | && view_start != saveLines) |
| 657 | scr_page (UP, count); |
679 | scr_page (UP, count); |
| 658 | } |
680 | } |
