diff options
Diffstat (limited to 'lib/libcurses/toucholap.c')
| -rw-r--r-- | lib/libcurses/toucholap.c | 77 |
1 files changed, 77 insertions, 0 deletions
diff --git a/lib/libcurses/toucholap.c b/lib/libcurses/toucholap.c new file mode 100644 index 0000000..8924ebe --- /dev/null +++ b/lib/libcurses/toucholap.c @@ -0,0 +1,77 @@ +/* + * Copyright (c) 1981, 1993 + * The Regents of the University of California. All rights reserved. + * + * 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[] = "@(#)toucholap.c 8.1 (Berkeley) 6/4/93"; +#endif /* not lint */ + +#include <curses.h> + +/* + * touchoverlap -- + * Touch, on win2, the part that overlaps with win1. + */ +int +touchoverlap(win1, win2) + register WINDOW *win1, *win2; +{ + register int y, endy, endx, starty, startx; + +#ifdef DEBUG + __CTRACE("touchoverlap: (%0.2o, %0.2o);\n", win1, win2); +#endif + starty = max(win1->begy, win2->begy); + startx = max(win1->begx, win2->begx); + endy = min(win1->maxy + win1->begy, win2->maxy + win2->begx); + endx = min(win1->maxx + win1->begx, win2->maxx + win2->begx); +#ifdef DEBUG + __CTRACE("touchoverlap: from (%d,%d) to (%d,%d)\n", + starty, startx, endy, endx); + __CTRACE("touchoverlap: win1 (%d,%d) to (%d,%d)\n", + win1->begy, win1->begx, win1->begy + win1->maxy, + win1->begx + win1->maxx); + __CTRACE("touchoverlap: win2 (%d,%d) to (%d,%d)\n", + win2->begy, win2->begx, win2->begy + win2->maxy, + win2->begx + win2->maxx); +#endif + if (starty >= endy || startx >= endx) + return (OK); + starty -= win2->begy; + startx -= win2->begx; + endy -= win2->begy; + endx -= win2->begx; + for (--endx, y = starty; y < endy; y++) + __touchline(win2, y, startx, endx, 0); + return (OK); +} + |
