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Annotation of 43BSD/usr.lib/libcurses/toucholap.c, revision 1.1.1.1

1.1       root        1: /*
                      2:  * Copyright (c) 1980 Regents of the University of California.
                      3:  * All rights reserved.  The Berkeley software License Agreement
                      4:  * specifies the terms and conditions for redistribution.
                      5:  */
                      6: 
                      7: #ifndef lint
                      8: static char sccsid[] = "@(#)toucholap.c        5.1 (Berkeley) 6/7/85";
                      9: #endif not lint
                     10: 
                     11: # include      "curses.ext"
                     12: 
                     13: # define       min(a,b)        (a < b ? a : b)
                     14: # define       max(a,b)        (a > b ? a : b)
                     15: 
                     16: /*
                     17:  *     Touch, on win2, the part that overlaps with win1.
                     18:  *
                     19:  */
                     20: touchoverlap(win1, win2)
                     21: reg WINDOW     *win1, *win2; {
                     22: 
                     23:        reg int         x, y, endy, endx, starty, startx;
                     24: 
                     25: # ifdef DEBUG
                     26:        fprintf(outf, "TOUCHOVERLAP(%0.2o, %0.2o);\n", win1, win2);
                     27: # endif
                     28:        starty = max(win1->_begy, win2->_begy);
                     29:        startx = max(win1->_begx, win2->_begx);
                     30:        endy = min(win1->_maxy + win1->_begy, win2->_maxy + win2->_begx);
                     31:        endx = min(win1->_maxx + win1->_begx, win2->_maxx + win2->_begx);
                     32: # ifdef DEBUG
                     33:        fprintf(outf, "TOUCHOVERLAP:from (%d,%d) to (%d,%d)\n", starty, startx, endy, endx);
                     34:        fprintf(outf, "TOUCHOVERLAP:win1 (%d,%d) to (%d,%d)\n", win1->_begy, win1->_begx, win1->_begy + win1->_maxy, win1->_begx + win1->_maxx);
                     35:        fprintf(outf, "TOUCHOVERLAP:win2 (%d,%d) to (%d,%d)\n", win2->_begy, win2->_begx, win2->_begy + win2->_maxy, win2->_begx + win2->_maxx);
                     36: # endif
                     37:        if (starty >= endy || startx >= endx)
                     38:                return;
                     39:        starty -= win2->_begy;
                     40:        startx -= win2->_begx;
                     41:        endy -= win2->_begy;
                     42:        endx -= win2->_begx;
                     43:        endx--;
                     44:        for (y = starty; y < endy; y++)
                     45:                touchline(win2, y, startx, endx);
                     46: }

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