386BSD 0.1 development

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

diff --git a/usr/src/lib/libcurses/touchwin.c b/usr/src/lib/libcurses/touchwin.c
index c9473bf..13d4331 100644 (file)
--- a/usr/src/lib/libcurses/touchwin.c
+++ b/usr/src/lib/libcurses/touchwin.c
@@ -1,34 +1,83 @@
+/*
+ * Copyright (c) 1981 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[] = "@(#)touchwin.c 5.4 (Berkeley) 6/1/90";
+#endif /* not lint */
+

 # include      "curses.ext"
 
 /*
  * make it look like the whole window has been changed.
  *
 # include      "curses.ext"
 
 /*
  * make it look like the whole window has been changed.
  *

- * %G% (Berkeley) @(#)touchwin.c       1.2

  */
 touchwin(win)
  */
 touchwin(win)

-reg WINDOW     *win;
+register WINDOW        *win;

 {
 {

-       reg WINDOW      *wp;
+       register int    y, maxy;

 
 

-       do_touch(win);
-       for (wp = win->_nextp; wp != win; wp = wp->_nextp)
-               do_touch(wp);
+# ifdef        DEBUG
+       fprintf(outf, "TOUCHWIN(%0.2o)\n", win);
+# endif
+       maxy = win->_maxy;
+       for (y = 0; y < maxy; y++)
+               touchline(win, y, 0, win->_maxx - 1);

 }
 
 /*
 }
 
 /*

- * do_touch:
- *     Touch the window
+ * touch a given line

  */
  */

-static
-do_touch(win)
-reg WINDOW     *win; {
-
-       reg int         y, maxy, maxx;
-
-       maxy = win->_maxy;
-       maxx = win->_maxx - 1;
-       for (y = 0; y < maxy; y++) {
-               win->_firstch[y] = 0;
-               win->_lastch[y] = maxx;
+touchline(win, y, sx, ex)
+register WINDOW        *win;
+register int   y, sx, ex;
+{
+# ifdef DEBUG
+       fprintf(outf, "TOUCHLINE(%0.2o, %d, %d, %d)\n", win, y, sx, ex);
+       fprintf(outf, "TOUCHLINE:first = %d, last = %d\n", win->_firstch[y], win->_lastch[y]);
+# endif
+       sx += win->_ch_off;
+       ex += win->_ch_off;
+       if (win->_firstch[y] == _NOCHANGE) {
+               win->_firstch[y] = sx;
+               win->_lastch[y] = ex;
+       }
+       else {
+               if (win->_firstch[y] > sx)
+                       win->_firstch[y] = sx;
+               if (win->_lastch[y] < ex)
+                       win->_lastch[y] = ex;

        }
        }

+# ifdef        DEBUG
+       fprintf(outf, "TOUCHLINE:first = %d, last = %d\n", win->_firstch[y], win->_lastch[y]);
+# endif

 }
 }