ncurses 6.2 - patch 20210619

[ncurses.git] / test / redraw.c

diff --git a/test/redraw.c b/test/redraw.c
index 9cb0de95a809a3e66845e559648668dacf8f51f7..b0840fb816a4e089704fe37b2bc906d0c1bbf859 100644 (file)
--- a/test/redraw.c
+++ b/test/redraw.c
@@ -1,5 +1,6 @@
 /****************************************************************************
- * Copyright (c) 2006-2011,2012 Free Software Foundation, Inc.              *
+ * Copyright 2020,2021 Thomas E. Dickey                                     *
+ * Copyright 2006-2012,2017 Free Software Foundation, Inc.                  *
  *                                                                          *
  * Permission is hereby granted, free of charge, to any person obtaining a  *
  * copy of this software and associated documentation files (the            *
@@ -26,13 +27,14 @@
  * authorization.                                                           *
  ****************************************************************************/
 /*
- * $Id: redraw.c,v 1.8 2012/12/08 20:46:02 tom Exp $
+ * $Id: redraw.c,v 1.13 2021/06/17 21:26:02 tom Exp $
  *
  * Demonstrate the redrawwin() and wredrawln() functions.
  * Thomas Dickey - 2006/11/4
  */
 
 #include <test.priv.h>
+#include <popup_msg.h>
 
 static void
 trash(int beg_x, int max_x, int cur_x)
@@ -53,15 +55,33 @@ trash(int beg_x, int max_x, int cur_x)
     for (x = max_x; x > cur_x; --x) {
        putchar('\b');
     }
+    fflush(stdout);
 }
 
 static void
 test_redraw(WINDOW *win)
 {
+    static const char *help[] =
+    {
+       "Commands:",
+       "  ^Q/ESC/q   - quit",
+       "  w          - recur in a new window",
+       "  !          - overwrite current line using stdio outside curses.",
+#ifdef NCURSES_VERSION
+       "  @          - run \"date\" command, to put its output on screen.",
+#endif
+       "  ^L         - call redrawwin() for current window.",
+       "  ^W         - call wredrawln() for current line/current window.",
+       "  arrow-keys - move cursor on the screen",
+       "",
+       "Other control characters are added to the screen in printable form.",
+       "Other printable characters are added to the screen as is.",
+       0
+    };
+
     WINDOW *win1;
     WINDOW *win2;
     bool done = FALSE;
-    int ch, y, x;
     int max_y, max_x;
     int beg_y, beg_x;
 
@@ -71,12 +91,16 @@ test_redraw(WINDOW *win)
     keypad(win, TRUE);
     getmaxyx(win, max_y, max_x);
     getbegyx(win, beg_y, beg_x);
+
     while (!done) {
-       ch = wgetch(win);
+       int ch = wgetch(win);
+       int y, x;
+
        getyx(win, y, x);
        switch (ch) {
        case 'q':
            /* FALLTHRU */
+       case QUIT:
        case ESCAPE:
            done = TRUE;
            break;
@@ -111,7 +135,7 @@ test_redraw(WINDOW *win)
            /*
             * For a shell command, we can work around the problem noted above
             * using mvcur().  It is ifdef'd for NCURSES, since X/Open does
-            * not define the case where the old location is unknown. 
+            * not define the case where the old location is unknown.
             */
            IGNORE_RC(system("date"));
            mvcur(-1, -1, y, x);
@@ -146,9 +170,14 @@ test_redraw(WINDOW *win)
                wmove(win, y, x + 1);
            break;
 
+       case HELP_KEY_1:
+           popup_msg(win, help);
+           break;
+
        default:
            if (ch > KEY_MIN) {
                waddstr(win, keyname(ch));
+               waddch(win, '\n');
            } else {
                waddstr(win, unctrl(UChar(ch)));
            }
@@ -159,10 +188,52 @@ test_redraw(WINDOW *win)
     }
 }
 
+static void
+usage(void)
+{
+    static const char *tbl[] =
+    {
+       "Usage: redraw [options]"
+       ,""
+       ,"Options:"
+       ,"  -e      use stderr (default stdout)"
+       ,"  -n      do not initialize terminal"
+    };
+    unsigned n;
+    for (n = 0; n < SIZEOF(tbl); ++n)
+       fprintf(stderr, "%s\n", tbl[n]);
+    ExitProgram(EXIT_FAILURE);
+}
+
 int
 main(int argc GCC_UNUSED, char *argv[]GCC_UNUSED)
 {
-    initscr();
+    int ch;
+    bool no_init = FALSE;
+    FILE *my_fp = stdout;
+
+    while ((ch = getopt(argc, argv, "en")) != -1) {
+       switch (ch) {
+       case 'e':
+           my_fp = stderr;
+           break;
+       case 'n':
+           no_init = TRUE;
+           break;
+       default:
+           usage();
+           break;
+       }
+    }
+    if (optind < argc)
+       usage();
+
+    if (no_init) {
+       START_TRACE();
+    } else {
+       newterm((char *) 0, my_fp, stdin);
+    }
+
     raw();
     noecho();
     test_redraw(stdscr);