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