diff options
Diffstat (limited to 'usr.bin/window/wwsize.c')
| -rw-r--r-- | usr.bin/window/wwsize.c | 191 |
1 files changed, 191 insertions, 0 deletions
diff --git a/usr.bin/window/wwsize.c b/usr.bin/window/wwsize.c new file mode 100644 index 0000000..7dee857 --- /dev/null +++ b/usr.bin/window/wwsize.c @@ -0,0 +1,191 @@ +/* + * Copyright (c) 1983, 1993 + * The Regents of the University of California. All rights reserved. + * + * This code is derived from software contributed to Berkeley by + * Edward Wang at The University of California, Berkeley. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. All advertising materials mentioning features or use of this software + * must display the following acknowledgement: + * This product includes software developed by the University of + * California, Berkeley and its contributors. + * 4. Neither the name of the University nor the names of its contributors + * may be used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + */ + +#ifndef lint +static char sccsid[] = "@(#)wwsize.c 8.1 (Berkeley) 6/6/93"; +#endif /* not lint */ + +#include "ww.h" + +/* + * Resize a window. Should be unattached. + */ +wwsize(w, nrow, ncol) +register struct ww *w; +{ + register i, j; + int nline; + union ww_char **buf = 0; + char **win = 0; + short *nvis = 0; + char **fmap = 0; + char m; + + /* + * First allocate new buffers. + */ + win = wwalloc(w->ww_w.t, w->ww_w.l, nrow, ncol, sizeof (char)); + if (win == 0) + goto bad; + if (w->ww_fmap != 0) { + fmap = wwalloc(w->ww_w.t, w->ww_w.l, nrow, ncol, sizeof (char)); + if (fmap == 0) + goto bad; + } + if (nrow > w->ww_b.nr || ncol > w->ww_b.nc) { + nline = MAX(w->ww_b.nr, nrow); + buf = (union ww_char **) wwalloc(w->ww_b.t, w->ww_b.l, + nline, ncol, sizeof (union ww_char)); + if (buf == 0) + goto bad; + } + nvis = (short *)malloc((unsigned) nrow * sizeof (short)); + if (nvis == 0) { + wwerrno = WWE_NOMEM; + goto bad; + } + nvis -= w->ww_w.t; + /* + * Copy text buffer. + */ + if (buf != 0) { + int b, r; + + b = w->ww_b.t + nline; + r = w->ww_b.l + ncol; + if (ncol < w->ww_b.nc) + for (i = w->ww_b.t; i < w->ww_b.b; i++) + for (j = w->ww_b.l; j < r; j++) + buf[i][j] = w->ww_buf[i][j]; + else + for (i = w->ww_b.t; i < w->ww_b.b; i++) { + for (j = w->ww_b.l; j < w->ww_b.r; j++) + buf[i][j] = w->ww_buf[i][j]; + for (; j < r; j++) + buf[i][j].c_w = ' '; + } + for (; i < b; i++) + for (j = w->ww_b.l; j < r; j++) + buf[i][j].c_w = ' '; + } + /* + * Now free the old stuff. + */ + wwfree((char **)w->ww_win, w->ww_w.t); + w->ww_win = win; + if (buf != 0) { + wwfree((char **)w->ww_buf, w->ww_b.t); + w->ww_buf = buf; + } + if (w->ww_fmap != 0) { + wwfree((char **)w->ww_fmap, w->ww_w.t); + w->ww_fmap = fmap; + } + free((char *)(w->ww_nvis + w->ww_w.t)); + w->ww_nvis = nvis; + /* + * Set new sizes. + */ + /* window */ + w->ww_w.b = w->ww_w.t + nrow; + w->ww_w.r = w->ww_w.l + ncol; + w->ww_w.nr = nrow; + w->ww_w.nc = ncol; + /* text buffer */ + if (buf != 0) { + w->ww_b.b = w->ww_b.t + nline; + w->ww_b.r = w->ww_b.l + ncol; + w->ww_b.nr = nline; + w->ww_b.nc = ncol; + } + /* scroll */ + if ((i = w->ww_b.b - w->ww_w.b) < 0 || + (i = w->ww_cur.r - w->ww_w.b + 1) > 0) { + w->ww_buf += i; + w->ww_b.t -= i; + w->ww_b.b -= i; + w->ww_cur.r -= i; + } + /* interior */ + w->ww_i.b = MIN(w->ww_w.b, wwnrow); + w->ww_i.r = MIN(w->ww_w.r, wwncol); + w->ww_i.nr = w->ww_i.b - w->ww_i.t; + w->ww_i.nc = w->ww_i.r - w->ww_i.l; + /* + * Initialize new buffers. + */ + /* window */ + m = 0; + if (w->ww_oflags & WWO_GLASS) + m |= WWM_GLS; + if (w->ww_oflags & WWO_REVERSE) + m |= WWM_REV; + for (i = w->ww_w.t; i < w->ww_w.b; i++) + for (j = w->ww_w.l; j < w->ww_w.r; j++) + w->ww_win[i][j] = m; + /* frame map */ + if (fmap != 0) + for (i = w->ww_w.t; i < w->ww_w.b; i++) + for (j = w->ww_w.l; j < w->ww_w.r; j++) + w->ww_fmap[i][j] = 0; + /* visibility */ + j = m ? 0 : w->ww_w.nc; + for (i = w->ww_w.t; i < w->ww_w.b; i++) + w->ww_nvis[i] = j; + /* + * Put cursor back. + */ + if (w->ww_hascursor) { + w->ww_hascursor = 0; + wwcursor(w, 1); + } + /* + * Fool with pty. + */ + if (w->ww_ispty && w->ww_pty >= 0) + (void) wwsetttysize(w->ww_pty, nrow, ncol); + return 0; +bad: + if (win != 0) + wwfree(win, w->ww_w.t); + if (fmap != 0) + wwfree(fmap, w->ww_w.t); + if (buf != 0) + wwfree((char **)buf, w->ww_b.t); + if (nvis != 0) + free((char *)(nvis + w->ww_w.t)); + return -1; +} |
