diff options
Diffstat (limited to 'usr.bin/window/wwredrawwin.c')
| -rw-r--r-- | usr.bin/window/wwredrawwin.c | 73 |
1 files changed, 73 insertions, 0 deletions
diff --git a/usr.bin/window/wwredrawwin.c b/usr.bin/window/wwredrawwin.c new file mode 100644 index 0000000..36590df --- /dev/null +++ b/usr.bin/window/wwredrawwin.c @@ -0,0 +1,73 @@ +/* + * 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[] = "@(#)wwredrawwin.c 8.1 (Berkeley) 6/6/93"; +#endif /* not lint */ + +#include "ww.h" + +wwredrawwin1(w, row1, row2, offset) +register struct ww *w; +int row1, row2, offset; +{ + int row; + register col; + register char *smap; + register union ww_char *buf; + register char *win; + register union ww_char *ns; + int x; + int nchanged; + + for (row = row1; row < row2; row++) { + col = w->ww_i.l; + ns = wwns[row]; + smap = &wwsmap[row][col]; + buf = w->ww_buf[row + offset]; + win = w->ww_win[row]; + nchanged = 0; + for (; col < w->ww_i.r; col++) + if (*smap++ == w->ww_index && + ns[col].c_w != + (x = buf[col].c_w ^ win[col] << WWC_MSHIFT)) { + nchanged++; + ns[col].c_w = x; + } + if (nchanged > 0) + wwtouched[row] |= WWU_TOUCHED; + } +} |
