Added virtual keyboard for text input, loosely based on John Wood's code

git-svn-id: svn://svn.rockbox.org/rockbox/trunk@2928 a1c6a512-1295-4272-9138-f99709370657

1 files changed, 117 insertions, 0 deletions

diff --git a/apps/player/keyboard.c b/apps/player/keyboard.c
new file mode 100644
index 0000000000..be0e43b8a9
--- /dev/null
+++ b/apps/player/keyboard.c
@@ -0,0 +1,117 @@
+/***************************************************************************
+ *             __________               __   ___.
+ *   Open      \______   \ ____   ____ |  | _\_ |__   _______  ___
+ *   Source     |       _//  _ \_/ ___\|  |/ /| __ \ /  _ \  \/  /
+ *   Jukebox    |    |   (  <_> )  \___|    < | \_\ (  <_> > <  <
+ *   Firmware   |____|_  /\____/ \___  >__|_ \|___  /\____/__/\_ \
+ *                     \/            \/     \/    \/            \/
+ * $Id$
+ *
+ * Copyright (C) 2002 by Björn Stenberg
+ *
+ * All files in this archive are subject to the GNU General Public License.
+ * See the file COPYING in the source tree root for full license agreement.
+ *
+ * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
+ * KIND, either express or implied.
+ *
+ ****************************************************************************/
+#include "lcd.h"
+#include "button.h"
+#include "kernel.h"
+#include "version.h"
+#include "debug_menu.h"
+#include "sprintf.h"
+#include <string.h>
+
+#define KEYBOARD_PAGES 4
+
+static char* kbd_setupkeys(int page)
+{
+    static char* lines[] = {
+        "ABCDEFGHIJKLMNOPQRSTUVWXYZ",
+        "abcdefghijklmnopqrstuvwxyz",
+        "01234567890!@#$%&/(){}[]<>",
+        "+-*_.,:;!?'"
+    };
+
+    return lines[page];
+}
+
+int kbd_input(char* text, int buflen)
+{
+    bool done = false;
+    int page=0, x=0;
+    char* line = kbd_setupkeys(page);
+    int linelen = strlen(line);
+
+    while(!done)
+    {
+        int i;
+        int len = strlen(text);
+
+        lcd_clear_display();
+
+        /* draw chars */
+        for (i=0; i < 11; i++)
+            lcd_putc(i, 1, line[i+x]);
+
+        /* write out the text */
+        if (len <= 11) {
+            /* if we have enough room */
+            lcd_puts(0, 0, text);
+        }
+        else {
+            /* if we don't have enough room, write out the last bit only */
+            lcd_putc(0, 0, '<');
+            lcd_puts(1, 0, text + len - 10);
+        }
+        lcd_update();
+
+        switch ( button_get(true) ) {
+
+        case BUTTON_MENU:
+            /* Page */
+            if (++page == KEYBOARD_PAGES)
+                page = 0;
+            line = kbd_setupkeys(page);
+            linelen = strlen(line);
+            break;
+
+        case BUTTON_RIGHT:
+            if (x < linelen - 1) 
+                x++; 
+            else 
+                x = 0;
+            break;
+
+        case BUTTON_LEFT:
+            if (x)
+                x--;
+            else
+                x = linelen - 1;
+            break;
+
+        case BUTTON_STOP:
+            /* backspace */
+            if (len)
+                text[len-1] = 0;
+            break;
+
+        case BUTTON_ON:
+            /* F2 accepts what was entered and continues */
+            done = true;
+            break;
+
+        case BUTTON_PLAY:
+            /* PLAY inserts the selected char */
+            if (len<buflen)
+            {
+                text[len] = line[x];
+                text[len+1] = 0;
+            }
+            break;
+        }
+    }
+    return 0;
+}