| | 1 | # include "curses.ext" |
| | 2 | |
| | 3 | /* |
| | 4 | * This routine adds the character to the current position |
| | 5 | * |
| | 6 | * @(#)addch.c 1.5 (Berkeley) %G% |
| | 7 | */ |
| | 8 | waddch(win, c) |
| | 9 | reg WINDOW *win; |
| | 10 | char c; |
| | 11 | { |
| | 12 | reg int x, y; |
| | 13 | reg WINDOW *wp; |
| | 14 | |
| | 15 | x = win->_curx; |
| | 16 | y = win->_cury; |
| | 17 | # ifdef FULLDEBUG |
| | 18 | fprintf(outf, "ADDCH('%c') at (%d, %d)\n", c, y, x); |
| | 19 | # endif |
| | 20 | if (y >= win->_maxy || x >= win->_maxx || y < 0 || x < 0) |
| | 21 | return ERR; |
| | 22 | switch (c) { |
| | 23 | case '\t': |
| | 24 | { |
| | 25 | reg int newx; |
| | 26 | |
| | 27 | for (newx = x + (8 - (x & 07)); x < newx; x++) |
| | 28 | if (waddch(win, ' ') == ERR) |
| | 29 | return ERR; |
| | 30 | return OK; |
| | 31 | } |
| | 32 | |
| | 33 | default: |
| | 34 | # ifdef FULLDEBUG |
| | 35 | fprintf(outf, "ADDCH: 1: y = %d, x = %d, firstch = %d, lastch = %d\n", y, x, win->_firstch[y], win->_lastch[y]); |
| | 36 | # endif |
| | 37 | if (win->_flags & _STANDOUT) |
| | 38 | c |= _STANDOUT; |
| | 39 | set_ch(win, y, x, c, NULL); |
| | 40 | for (wp = win->_nextp; wp != win; wp = wp->_nextp) |
| | 41 | set_ch(wp, y, x, c, win); |
| | 42 | win->_y[y][x++] = c; |
| | 43 | if (x >= win->_maxx) { |
| | 44 | x = 0; |
| | 45 | newline: |
| | 46 | if (++y >= win->_maxy) |
| | 47 | if (win->_scroll) { |
| | 48 | wrefresh(win); |
| | 49 | scroll(win); |
| | 50 | --y; |
| | 51 | } |
| | 52 | else |
| | 53 | return ERR; |
| | 54 | } |
| | 55 | # ifdef FULLDEBUG |
| | 56 | fprintf(outf, "ADDCH: 2: y = %d, x = %d, firstch = %d, lastch = %d\n", y, x, win->_firstch[y], win->_lastch[y]); |
| | 57 | # endif |
| | 58 | break; |
| | 59 | case '\n': |
| | 60 | wclrtoeol(win); |
| | 61 | if (!NONL) |
| | 62 | x = 0; |
| | 63 | goto newline; |
| | 64 | case '\r': |
| | 65 | x = 0; |
| | 66 | break; |
| | 67 | case '\b': |
| | 68 | if (--x < 0) |
| | 69 | x = 0; |
| | 70 | break; |
| | 71 | } |
| | 72 | win->_curx = x; |
| | 73 | win->_cury = y; |
| | 74 | return OK; |
| | 75 | } |
| | 76 | |
| | 77 | /* |
| | 78 | * set_ch: |
| | 79 | * Set the first and last change flags for this window. |
| | 80 | */ |
| | 81 | static |
| | 82 | set_ch(win, y, x, ch, orig) |
| | 83 | reg WINDOW *win; |
| | 84 | int y, x; |
| | 85 | WINDOW *orig; { |
| | 86 | |
| | 87 | if (orig != NULL) { |
| | 88 | y -= win->_begy - orig->_begy; |
| | 89 | x -= win->_begx - orig->_begx; |
| | 90 | } |
| | 91 | if (y < 0 || y >= win->_maxy || x < 0 || x >= win->_maxx) |
| | 92 | return; |
| | 93 | if (win->_y[y][x] != ch) { |
| | 94 | if (win->_firstch[y] == _NOCHANGE) |
| | 95 | win->_firstch[y] = win->_lastch[y] = x; |
| | 96 | else if (x < win->_firstch[y]) |
| | 97 | win->_firstch[y] = x; |
| | 98 | else if (x > win->_lastch[y]) |
| | 99 | win->_lastch[y] = x; |
| | 100 | } |
| | 101 | } |
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