4.3BSD - /usr/src/usr.lib/libcurses/toucholap.c

   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: }

Defined functions

Defined variables

Defined macros