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keyboard add ability to specify temporary custom layouts

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rb core allows you to load custom keyboard layouts

this patch adds the ability to load a keyboard layout in a buffer
the custom layout is temporary and does not overwrite the current layout

use like so:

    unsigned short kbd[64];
    unsigned short *kbd_p = kbd;
    if (!kbd_create_layout("ABCD1234\n", kbd, sizeof(kbd)))
        kbd_p = NULL;

    rb->kbd_input(buf,sizeof(buf), kbd_p);

Change-Id: I7be2bd4a1b4797a147fa70228a9749dc56ac052a
This commit is contained in:
William Wilgus 2020-07-21 02:33:53 -04:00
parent a5df94beb5
commit cb94b3ae2e
37 changed files with 173 additions and 69 deletions
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63
apps/plugins/lib/kbd_helper.c Normal file
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@ -0,0 +1,63 @@
/***************************************************************************
* __________ __ ___.
* Open \______ \ ____ ____ | | _\_ |__ _______ ___
* Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ /
* Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < <
* Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \
* \/ \/ \/ \/ \/
* $Id$
*
* Copyright (C) 2020 William Wilgus
*
* 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.
*
****************************************************************************/
#include "plugin.h"
#include "kbd_helper.h"
/* USAGE:
unsigned short kbd[64];
unsigned short *kbd_p = kbd;
if (!kbd_create_layout("ABCD1234\n", kbd, sizeof(kbd)))
kbd_p = NULL;
rb->kbd_input(buf,sizeof(buf), kbd_p);
*/
/* create a custom keyboard layout for kbd_input
* success returns size of buffer used
* failure returns 0
*/
int kbd_create_layout(char *layout, unsigned short *buf, int bufsz)
{
unsigned short *pbuf;
const unsigned char *p = layout;
int len = 0;
pbuf = buf;
while (*p && (pbuf - buf + 8) < bufsz)
{
p = rb->utf8decode(p, &pbuf[len+1]);
if (pbuf[len+1] == '\n')
{
*pbuf = len;
pbuf += len+1;
len = 0;
}
else
len++;
}
if (len+1 < bufsz)
{
*pbuf = len;
pbuf[len+1] = 0xFEFF; /* mark end of characters */
return len + 1;
}
return 0;
}