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  1. /*
  2.  * Copyright (c) 2009 Jiri Svoboda
  3.  * All rights reserved.
  4.  *
  5.  * Redistribution and use in source and binary forms, with or without
  6.  * modification, are permitted provided that the following conditions
  7.  * are met:
  8.  *
  9.  * - Redistributions of source code must retain the above copyright
  10.  *   notice, this list of conditions and the following disclaimer.
  11.  * - Redistributions in binary form must reproduce the above copyright
  12.  *   notice, this list of conditions and the following disclaimer in the
  13.  *   documentation and/or other materials provided with the distribution.
  14.  * - The name of the author may not be used to endorse or promote products
  15.  *   derived from this software without specific prior written permission.
  16.  *
  17.  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
  18.  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
  19.  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
  20.  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
  21.  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
  22.  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  23.  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  24.  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  25.  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
  26.  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  27.  */
  28.  
  29. /** @addtogroup kbd
  30.  * @brief   US QWERTY leyout.
  31.  * @{
  32.  */
  33.  
  34. #include <kbd.h>
  35. #include <kbd/kbd.h>
  36. #include <kbd/keycode.h>
  37. #include <layout.h>
  38.  
  39. static char map_lcase[] = {
  40.     [KC_Q] = 'q',
  41.     [KC_W] = 'w',
  42.     [KC_E] = 'e',
  43.     [KC_R] = 'r',
  44.     [KC_T] = 't',
  45.     [KC_Y] = 'y',
  46.     [KC_U] = 'u',
  47.     [KC_I] = 'i',
  48.     [KC_O] = 'o',
  49.     [KC_P] = 'p',
  50.  
  51.     [KC_A] = 'a',
  52.     [KC_S] = 's',
  53.     [KC_D] = 'd',
  54.     [KC_F] = 'f',
  55.     [KC_G] = 'g',
  56.     [KC_H] = 'h',
  57.     [KC_J] = 'j',
  58.     [KC_K] = 'k',
  59.     [KC_L] = 'l',
  60.  
  61.     [KC_Z] = 'z',
  62.     [KC_X] = 'x',
  63.     [KC_C] = 'c',
  64.     [KC_V] = 'v',
  65.     [KC_B] = 'b',
  66.     [KC_N] = 'n',
  67.     [KC_M] = 'm',
  68. };
  69.  
  70. static char map_ucase[] = {
  71.     [KC_Q] = 'Q',
  72.     [KC_W] = 'W',
  73.     [KC_E] = 'E',
  74.     [KC_R] = 'R',
  75.     [KC_T] = 'T',
  76.     [KC_Y] = 'Y',
  77.     [KC_U] = 'U',
  78.     [KC_I] = 'I',
  79.     [KC_O] = 'O',
  80.     [KC_P] = 'P',
  81.  
  82.     [KC_A] = 'A',
  83.     [KC_S] = 'S',
  84.     [KC_D] = 'D',
  85.     [KC_F] = 'F',
  86.     [KC_G] = 'G',
  87.     [KC_H] = 'H',
  88.     [KC_J] = 'J',
  89.     [KC_K] = 'K',
  90.     [KC_L] = 'L',
  91.  
  92.     [KC_Z] = 'Z',
  93.     [KC_X] = 'X',
  94.     [KC_C] = 'C',
  95.     [KC_V] = 'V',
  96.     [KC_B] = 'B',
  97.     [KC_N] = 'N',
  98.     [KC_M] = 'M',
  99. };
  100.  
  101. static char map_not_shifted[] = {
  102.     [KC_BACKTICK] = '`',
  103.  
  104.     [KC_1] = '1',
  105.     [KC_2] = '2',
  106.     [KC_3] = '3',
  107.     [KC_4] = '4',
  108.     [KC_5] = '5',
  109.     [KC_6] = '6',
  110.     [KC_7] = '7',
  111.     [KC_8] = '8',
  112.     [KC_9] = '9',
  113.     [KC_0] = '0',
  114.  
  115.     [KC_MINUS] = '-',
  116.     [KC_EQUALS] = '=',
  117.  
  118.     [KC_LBRACKET] = '[',
  119.     [KC_RBRACKET] = ']',
  120.  
  121.     [KC_SEMICOLON] = ';',
  122.     [KC_QUOTE] = '\'',
  123.     [KC_BACKSLASH] = '\\',
  124.  
  125.     [KC_COMMA] = ',',
  126.     [KC_PERIOD] = '.',
  127.     [KC_SLASH] = '/',
  128. };
  129.  
  130. static char map_shifted[] = {
  131.     [KC_BACKTICK] = '~',
  132.  
  133.     [KC_1] = '!',
  134.     [KC_2] = '@',
  135.     [KC_3] = '#',
  136.     [KC_4] = '$',
  137.     [KC_5] = '%',
  138.     [KC_6] = '^',
  139.     [KC_7] = '&',
  140.     [KC_8] = '*',
  141.     [KC_9] = '(',
  142.     [KC_0] = ')',
  143.  
  144.     [KC_MINUS] = '_',
  145.     [KC_EQUALS] = '+',
  146.  
  147.     [KC_LBRACKET] = '{',
  148.     [KC_RBRACKET] = '}',
  149.  
  150.     [KC_SEMICOLON] = ':',
  151.     [KC_QUOTE] = '"',
  152.     [KC_BACKSLASH] = '|',
  153.  
  154.     [KC_COMMA] = '<',
  155.     [KC_PERIOD] = '>',
  156.     [KC_SLASH] = '?',
  157. };
  158.  
  159. static char map_neutral[] = {
  160.     [KC_BACKSPACE] = '\b',
  161.     [KC_TAB] = '\t',
  162.     [KC_ENTER] = '\n',
  163.     [KC_SPACE] = ' ',
  164.  
  165.     [KC_NSLASH] = '/',
  166.     [KC_NTIMES] = '*',
  167.     [KC_NMINUS] = '-',
  168.     [KC_NPLUS] = '+',
  169.     [KC_NENTER] = '\n'
  170. };
  171.  
  172. static char map_numeric[] = {
  173.     [KC_N7] = '7',
  174.     [KC_N8] = '8',
  175.     [KC_N9] = '9',
  176.     [KC_N4] = '4',
  177.     [KC_N5] = '5',
  178.     [KC_N6] = '6',
  179.     [KC_N1] = '1',
  180.     [KC_N2] = '2',
  181.     [KC_N3] = '3',
  182.  
  183.     [KC_N0] = '0',
  184.     [KC_NPERIOD] = '.'
  185. };
  186.  
  187. static int translate(unsigned int key, char *map, size_t map_length)
  188. {
  189.     if (key >= map_length) return 0;
  190.     return map[key];   
  191. }
  192.  
  193. char layout_parse_ev(kbd_event_t *ev)
  194. {
  195.     char c;
  196.  
  197.     /* Produce no characters when Ctrl or Alt is pressed. */
  198.     if ((ev->mods & (KM_CTRL | KM_ALT)) != 0)
  199.         return 0;
  200.  
  201.     c = translate(ev->key, map_neutral, sizeof(map_neutral) / sizeof(char));
  202.     if (c != 0) return c;
  203.  
  204.     if (((ev->mods & KM_SHIFT) != 0) ^ ((ev->mods & KM_CAPS_LOCK) != 0))
  205.         c = translate(ev->key, map_ucase, sizeof(map_ucase) / sizeof(char));
  206.     else
  207.         c = translate(ev->key, map_lcase, sizeof(map_lcase) / sizeof(char));
  208.  
  209.     if (c != 0) return c;
  210.  
  211.     if ((ev->mods & KM_SHIFT) != 0)
  212.         c = translate(ev->key, map_shifted, sizeof(map_shifted) / sizeof(char));
  213.     else
  214.         c = translate(ev->key, map_not_shifted, sizeof(map_not_shifted) / sizeof(char));
  215.  
  216.     if (c != 0) return c;
  217.  
  218.     if ((ev->mods & KM_NUM_LOCK) != 0)
  219.         c = translate(ev->key, map_numeric, sizeof(map_numeric) / sizeof(char));
  220.     else
  221.         c = 0;
  222.  
  223.     return c;
  224. }
  225.  
  226. /**
  227.  * @}
  228.  */
  229.