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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.  * @{
  31.  */
  32. /**
  33.  * @file
  34.  * @brief   Stroke simulator.
  35.  *
  36.  * When simulating a keyboard using a serial TTY we need to convert the
  37.  * recognized strokes (such as Shift-A) to sequences of key presses and
  38.  * releases (such as 'press Shift, press A, release A, release Shift').
  39.  */
  40.  
  41. #include <stroke.h>
  42. #include <kbd.h>
  43. #include <kbd/kbd.h>
  44. #include <kbd/keycode.h>
  45.  
  46. /** Correspondence between modifers and the modifier keycodes. */
  47. static unsigned int mods_keys[][2] = {
  48.     { KM_LSHIFT, KC_LSHIFT },
  49.     { 0, 0 }
  50. };
  51.  
  52. /** Simulate keystroke using sequences of key presses and releases. */
  53. void stroke_sim(unsigned mod, unsigned key)
  54. {
  55.     int i;
  56.  
  57.     /* Simulate modifier presses. */
  58.     i = 0;
  59.     while (mods_keys[i][0] != 0) {
  60.         if (mod & mods_keys[i][0]) {
  61.             kbd_push_ev(KE_PRESS, mods_keys[i][1]);
  62.         }
  63.         ++i;
  64.     }
  65.  
  66.     /* Simulate key press and release. */
  67.     if (key != 0) {
  68.         kbd_push_ev(KE_PRESS, key);
  69.         kbd_push_ev(KE_RELEASE, key);
  70.     }
  71.  
  72.     /* Simulate modifier releases. */
  73.     i = 0;
  74.     while (mods_keys[i][0] != 0) {
  75.         if (mod & mods_keys[i][0]) {
  76.             kbd_push_ev(KE_RELEASE, mods_keys[i][1]);
  77.         }
  78.         ++i;
  79.     }
  80. }
  81.  
  82. /**
  83.  * @}
  84.  */
  85.