Subversion Repositories HelenOS

/*
 * Copyright (c) 2009 Jiri Svoboda
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 *
 * - Redistributions of source code must retain the above copyright
 *   notice, this list of conditions and the following disclaimer.
 * - Redistributions in binary form must reproduce the above copyright
 *   notice, this list of conditions and the following disclaimer in the
 *   documentation and/or other materials provided with the distribution.
 * - The name of the author may not be used to endorse or promote products
 *   derived from this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */

/** @addtogroup kbd
 * @brief   US QWERTY leyout.
 * @{
 */ 

#include <kbd.h>
#include <kbd/kbd.h>
#include <kbd/keycode.h>
#include <layout.h>

static void layout_reset(void);
static wchar_t layout_parse_ev(kbd_event_t *ev);

layout_op_t us_qwerty_op = {
    layout_reset,
    layout_parse_ev
};

static wchar_t map_lcase[] = {
    [KC_Q] = 'q',
    [KC_W] = 'w',
    [KC_E] = 'e',
    [KC_R] = 'r',
    [KC_T] = 't',
    [KC_Y] = 'y',
    [KC_U] = 'u',
    [KC_I] = 'i',
    [KC_O] = 'o',
    [KC_P] = 'p',

    [KC_A] = 'a',
    [KC_S] = 's',
    [KC_D] = 'd',
    [KC_F] = 'f',
    [KC_G] = 'g',
    [KC_H] = 'h',
    [KC_J] = 'j',
    [KC_K] = 'k',
    [KC_L] = 'l',

    [KC_Z] = 'z',
    [KC_X] = 'x',
    [KC_C] = 'c',
    [KC_V] = 'v',
    [KC_B] = 'b',
    [KC_N] = 'n',
    [KC_M] = 'm',
};

static wchar_t map_ucase[] = {
    [KC_Q] = 'Q',
    [KC_W] = 'W',
    [KC_E] = 'E',
    [KC_R] = 'R',
    [KC_T] = 'T',
    [KC_Y] = 'Y',
    [KC_U] = 'U',
    [KC_I] = 'I',
    [KC_O] = 'O',
    [KC_P] = 'P',

    [KC_A] = 'A',
    [KC_S] = 'S',
    [KC_D] = 'D',
    [KC_F] = 'F',
    [KC_G] = 'G',
    [KC_H] = 'H',
    [KC_J] = 'J',
    [KC_K] = 'K',
    [KC_L] = 'L',

    [KC_Z] = 'Z',
    [KC_X] = 'X',
    [KC_C] = 'C',
    [KC_V] = 'V',
    [KC_B] = 'B',
    [KC_N] = 'N',
    [KC_M] = 'M',
};

static wchar_t map_not_shifted[] = {
    [KC_BACKTICK] = '`',

    [KC_1] = '1',
    [KC_2] = '2',
    [KC_3] = '3',
    [KC_4] = '4',
    [KC_5] = '5',
    [KC_6] = '6',
    [KC_7] = '7',
    [KC_8] = '8',
    [KC_9] = '9',
    [KC_0] = '0',

    [KC_MINUS] = '-',
    [KC_EQUALS] = '=',

    [KC_LBRACKET] = '[',
    [KC_RBRACKET] = ']',

    [KC_SEMICOLON] = ';',
    [KC_QUOTE] = '\'',
    [KC_BACKSLASH] = '\\',

    [KC_COMMA] = ',',
    [KC_PERIOD] = '.',
    [KC_SLASH] = '/',
};

static wchar_t map_shifted[] = {
    [KC_BACKTICK] = '~',

    [KC_1] = '!',
    [KC_2] = '@',
    [KC_3] = '#',
    [KC_4] = '$',
    [KC_5] = '%',
    [KC_6] = '^',
    [KC_7] = '&',
    [KC_8] = '*',
    [KC_9] = '(',
    [KC_0] = ')',

    [KC_MINUS] = '_',
    [KC_EQUALS] = '+',

    [KC_LBRACKET] = '{',
    [KC_RBRACKET] = '}',

    [KC_SEMICOLON] = ':',
    [KC_QUOTE] = '"',
    [KC_BACKSLASH] = '|',

    [KC_COMMA] = '<',
    [KC_PERIOD] = '>',
    [KC_SLASH] = '?',
};

static wchar_t map_neutral[] = {
    [KC_BACKSPACE] = '\b',
    [KC_TAB] = '\t',
    [KC_ENTER] = '\n',
    [KC_SPACE] = ' ',

    [KC_NSLASH] = '/',
    [KC_NTIMES] = '*',
    [KC_NMINUS] = '-',
    [KC_NPLUS] = '+',
    [KC_NENTER] = '\n'
};

static wchar_t map_numeric[] = {
    [KC_N7] = '7',
    [KC_N8] = '8',
    [KC_N9] = '9',
    [KC_N4] = '4',
    [KC_N5] = '5',
    [KC_N6] = '6',
    [KC_N1] = '1',
    [KC_N2] = '2',
    [KC_N3] = '3',

    [KC_N0] = '0',
    [KC_NPERIOD] = '.'
};

static wchar_t translate(unsigned int key, wchar_t *map, size_t map_length)
{
    if (key >= map_length)
        return 0;
    return map[key];
}

static void layout_reset(void)
{
}

static wchar_t layout_parse_ev(kbd_event_t *ev)
{
    wchar_t c;

    /* Produce no characters when Ctrl or Alt is pressed. */
    if ((ev->mods & (KM_CTRL | KM_ALT)) != 0)
        return 0;

    c = translate(ev->key, map_neutral, sizeof(map_neutral) / sizeof(wchar_t));
    if (c != 0)
        return c;

    if (((ev->mods & KM_SHIFT) != 0) ^ ((ev->mods & KM_CAPS_LOCK) != 0))
        c = translate(ev->key, map_ucase, sizeof(map_ucase) / sizeof(wchar_t));
    else
        c = translate(ev->key, map_lcase, sizeof(map_lcase) / sizeof(wchar_t));

    if (c != 0)
        return c;

    if ((ev->mods & KM_SHIFT) != 0)
        c = translate(ev->key, map_shifted, sizeof(map_shifted) / sizeof(wchar_t));
    else
        c = translate(ev->key, map_not_shifted, sizeof(map_not_shifted) / sizeof(wchar_t));

    if (c != 0)
        return c;

    if ((ev->mods & KM_NUM_LOCK) != 0)
        c = translate(ev->key, map_numeric, sizeof(map_numeric) / sizeof(wchar_t));
    else
        c = 0;

    return c;
}

/**
 * @}
 */