keyboard.c Use viewports, move text box pos

allows items to be moved around with less code changes

remove scrolling I was not overly impressed with it
add test_kbd plugin

Change-Id: Ic183c7221bda9405891632704f3a7bbfd79bfe83

apps/plugins/CATEGORIES

@@ -172,6 +172,7 @@ test_disk,apps
 test_fps,apps
 test_grey,apps
 test_gfx,apps
+test_kbd,apps
 test_resize,apps
 test_sampr,apps
 test_scanrate,apps

apps/plugins/SOURCES

@@ -204,6 +204,7 @@ test_core_jpeg.c
 test_disk.c
 test_fps.c
 test_gfx.c
+test_kbd.c
 #if LCD_DEPTH < 4 && !defined(SIMULATOR)
 test_scanrate.c
 #endif

apps/plugins/SOURCES.app_build

@@ -19,6 +19,7 @@ stopwatch.lua
 
 
 #ifdef HAVE_TEST_PLUGINS /* enable in advanced build options */
+test_kbd.c
 test_fps.c
 #ifdef HAVE_ADJUSTABLE_CPU_FREQ
 test_boost.c

apps/plugins/test_kbd.c

@@ -0,0 +1,46 @@
+/***************************************************************************
+ *             __________               __   ___.
+ *   Open      \______   \ ____   ____ |  | _\_ |__   _______  ___
+ *   Source     |       _//  _ \_/ ___\|  |/ /| __ \ /  _ \  \/  /
+ *   Jukebox    |    |   (  <_> )  \___|    < | \_\ (  <_> > <  <
+ *   Firmware   |____|_  /\____/ \___  >__|_ \|___  /\____/__/\_ \
+ *                     \/            \/     \/    \/            \/
+ * $Id$
+ *
+ * Copyright (C) 2002 Björn Stenberg
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version 2
+ * of the License, or (at your option) any later version.
+ *
+ * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
+ * KIND, either express or implied.
+ *
+ ****************************************************************************/
+
+/* welcome to the example rockbox plugin */
+
+/* mandatory include for all plugins */
+#include "plugin.h"
+
+/* this is the plugin entry point */
+enum plugin_status plugin_start(const void* parameter)
+{
+    /* if you don't use the parameter, you can do like
+       this to avoid the compiler warning about it */
+    (void)parameter;
+
+    /* "rb->" marks a plugin api call. Rockbox offers many of its built-in
+     * functions to plugins */
+    /* now go ahead and have fun! */
+    char buffer[MAX_PATH];
+    rb->snprintf(buffer, sizeof(buffer), "Keyboard test; Current plugin filename: '%s'",
+                                        rb->plugin_get_current_filename());
+
+    if (rb->kbd_input(buffer, sizeof(buffer), NULL) == 0)
+        rb->splash(HZ*2, buffer);
+
+    /* tell Rockbox that we have completed successfully */
+    return PLUGIN_OK;
+}