Moved from ports with several enhancements

1 files changed, 120 insertions, 0 deletions

diff --git a/lib/libncurses/TESTS/over.c b/lib/libncurses/TESTS/over.c
new file mode 100644
index 0000000..530e48d
--- /dev/null
+++ b/lib/libncurses/TESTS/over.c
@@ -0,0 +1,120 @@
+/*********************************************************************
+ * [program]   overwrite() - Play with overwrite() function to       *
+ *             attempt pop-up windows.                               *
+ * ----------------------------------------------------------------- *
+ * [written]   1-Feb-1993 by Neal Ensor (ensor@cs.utk.edu)           *
+ * ----------------------------------------------------------------- *
+ * [notes]     Originally written on SVR4 UNIX, then recompiled on   *
+ *             Linux (Slackware 1.1.1, ncurses 1.8.1)                *
+ * ----------------------------------------------------------------- *
+ * [problem]   On ncurses, the overwrite() function doesn't seem to  *
+ *             overwrite.  Maybe I'm missing something, but this     *
+ *             program in SVR4 displays three windows, waits for a   *
+ *             keypress, then removes the top window.  With ncurses, *
+ *             nothing changes on the display.                       *
+ *********************************************************************/
+  
+#  include <ncurses.h>         /* ncurses include lives here */
+
+main()
+{
+    /****************************************************************
+     * Declare three little window pointers...                      *
+     ****************************************************************/
+    WINDOW *win, *win1, *win2;
+
+    /****************************************************************
+     * Set up the screen...                                         *
+     ****************************************************************/
+    initscr();
+    traceon();
+    noecho();
+    nonl();
+    cbreak();
+    refresh();
+
+    /****************************************************************
+     * Draw three overlapping windows.                              *
+     ****************************************************************/
+    win=newwin(6,45, 6,6);
+    win1=newwin(10,20,5,5);
+    win2=newwin(10,30,7,7);
+
+    /****************************************************************
+     * Box them, and print a hidden message...                      *
+     ****************************************************************/
+    box(win,  0, 0);
+    box(win1, 0, 0);
+    box(win2, 0, 0);
+    mvwprintw(win1, 6,6, "Hey!");
+    mvwaddch(win, 1, 1, '0');
+    mvwaddch(win1, 1, 1, '1');
+    mvwaddch(win2, 1, 1, '2');
+    wnoutrefresh(win);
+    wnoutrefresh(win1);
+    wnoutrefresh(win2);
+    doupdate();
+ 
+    /****************************************************************
+     * Await a keypress to show what we've done so far.             *
+     ****************************************************************/
+    getch();
+
+    /****************************************************************
+     * Now, overwrite win2 with contents of all lower windows IN    *
+     * ORDER from the stdscr up...                                  *
+     ****************************************************************/
+    if (overwrite(stdscr, win2) == ERR)
+      fprintf(stderr, "overwrite(stdscr, win2) failed!\n");
+
+    touchwin(stdscr); wnoutrefresh(stdscr);
+    touchwin(win); wnoutrefresh(win);
+    touchwin(win1); wnoutrefresh(win1);
+    touchwin(win2); wnoutrefresh(win2);
+    doupdate();
+
+    getch();
+    if (overwrite(win, win2) == ERR)
+      fprintf(stderr, "overwrite(win, win2) failed!\n");
+
+    touchwin(stdscr); wnoutrefresh(stdscr);
+    touchwin(win); wnoutrefresh(win);
+    touchwin(win1); wnoutrefresh(win1);
+    touchwin(win2); wnoutrefresh(win2);
+    doupdate();
+
+    getch();
+    if (overwrite(win1, win2) == ERR)
+      fprintf(stderr, "overwrite(win1, win2) failed!\n");
+
+    /****************************************************************
+     * Perform touches, and hidden refreshes on each window.        *
+     * ------------------------------------------------------------ *
+     * NOTE:  If you replace the wnoutrefresh() call with wrefresh()*
+     * you can see all windows being redrawn untouched.             *
+     ****************************************************************/
+    touchwin(stdscr); wnoutrefresh(stdscr);
+    touchwin(win); wnoutrefresh(win);
+    touchwin(win1); wnoutrefresh(win1);
+    touchwin(win2); wnoutrefresh(win2);
+    doupdate();
+
+    /****************************************************************
+     * At this point, win2 should be "destroyed"; having all other  *
+     * window contents overwritten onto it.  The doupdate() should  *
+     * effectively remove it from the screen, leaving the others    *
+     * untouched.  On SVR4, this happens, but not with ncurses.     *
+     * I'd suspect something in overwrite() causes this, as nothing *
+     * appears to be overwritten after the calls, with no errors    *
+     * being reported.  This was compiled on my Linux from Slackware*
+     * 1.1.1, with ncurses1.8.1 recompiled on it, using the console *
+     * entry from the "new" terminfo from ncurses1.8.1.             *
+     ****************************************************************/
+    getch();
+
+    /****************************************************************
+     * Clean up our act and exit.                                   *
+     ****************************************************************/
+    endwin();
+}
+