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[unix-history] / usr / src / lib / libcurses / overwrite.c

# include       "curses.ext"

# define        min(a,b)        (a < b ? a : b)

/*
*      This routine writes win1 on win2 destructively.
*
* %G% (Berkeley) @(#)overwrite.c       1.3
*/
overwrite(win1, win2)
reg WINDOW      *win1, *win2; {

       reg int         x, y, minx, miny, startx, starty;

# ifdef DEBUG
       fprintf(outf, "OVERWRITE(0%o, 0%o);\n", win1, win2);
# endif
       miny = min(win1->_maxy, win2->_maxy);
       minx = min(win1->_maxx, win2->_maxx);
# ifdef DEBUG
       fprintf(outf, "OVERWRITE:\tminx = %d,  miny = %d\n", minx, miny);
# endif
       starty = win1->_begy - win2->_begy;
       startx = win1->_begx - win2->_begx;
       if (startx < 0)
               startx = 0;
       for (y = 0; y < miny; y++)
               if (wmove(win2, y + starty, startx) != ERR)
                       for (x = 0; x < minx; x++)
                               waddch(win2, win1->_y[y][x]);
}