kconfig/lxdialog: support resize

In all dialogs now properly catch KEY_RESIZE and take proper action.
In mconf try to behave sensibly when a dialog routine returns
-ERRDISPLAYTOOSMALL.

The original check for a screnn size of 80x19 is kept for now.
It may make sense to remove it later, but thats anyway what
much text is adjusted for.

Signed-off-by: Sam Ravnborg <sam@ravnborg.org>

1 files changed, 10 insertions, 0 deletions

diff --git a/scripts/kconfig/lxdialog/yesno.c b/scripts/kconfig/lxdialog/yesno.c
index 8364f9dd01c3..ee0a04e3e012 100644
--- a/scripts/kconfig/lxdialog/yesno.c
+++ b/scripts/kconfig/lxdialog/yesno.c
@@ -44,6 +44,12 @@ int dialog_yesno(const char *title, const char *prompt, int height, int width)
         int i, x, y, key = 0, button = 0;
         WINDOW *dialog;
 
+do_resize:
+        if (getmaxy(stdscr) < (height + 4))
+                return -ERRDISPLAYTOOSMALL;
+        if (getmaxx(stdscr) < (width + 4))
+                return -ERRDISPLAYTOOSMALL;
+
         /* center dialog box on screen */
         x = (COLS - width) / 2;
         y = (LINES - height) / 2;
@@ -96,6 +102,10 @@ int dialog_yesno(const char *title, const char *prompt, int height, int width)
                 case KEY_ESC:
                         key = on_key_esc(dialog);
                         break;
+                case KEY_RESIZE:
+                        delwin(dialog);
+                        on_key_resize();
+                        goto do_resize;
                 }
         }