src/video/ataricommon/SDL_gemdosevents.c

   1 /*
   2     SDL - Simple DirectMedia Layer
   3     Copyright (C) 1997-2009 Sam Lantinga
   4
   5     This library is free software; you can redistribute it and/or
   6     modify it under the terms of the GNU Lesser General Public
   7     License as published by the Free Software Foundation; either
   8     version 2.1 of the License, or (at your option) any later version.
   9
  10     This library is distributed in the hope that it will be useful,
  11     but WITHOUT ANY WARRANTY; without even the implied warranty of
  12     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  13     Lesser General Public License for more details.
  14
  15     You should have received a copy of the GNU Lesser General Public
  16     License along with this library; if not, write to the Free Software
  17     Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
  18
  19     Sam Lantinga
  20     slouken@libsdl.org
  21 */
  22 #include "SDL_config.h"
  23
  24 /*
  25  *      Atari keyboard events manager, using Gemdos
  26  *
  27  *      Patrice Mandin
  28  */
  29
  30 /* Mint includes */
  31 #include <mint/osbind.h>
  32 #include <mint/cookie.h>
  33
  34 #include "../../events/SDL_sysevents.h"
  35 #include "../../events/SDL_events_c.h"
  36
  37 #include "SDL_atarikeys.h"
  38 #include "SDL_atarievents_c.h"
  39 #include "SDL_xbiosevents_c.h"
  40 #include "SDL_ataridevmouse_c.h"
  41
  42 /* To save state of keyboard */
  43
  44 static unsigned char gemdos_currentkeyboard[ATARIBIOS_MAXKEYS];
  45 static unsigned char gemdos_previouskeyboard[ATARIBIOS_MAXKEYS];
  46 static SDL_bool use_dev_mouse = SDL_FALSE;
  47
  48 #ifndef DEV_BUSY
  49 enum {
  50         DEV_BUSY=0,
  51         DEV_READY
  52 };
  53 #endif
  54
  55 static void UpdateSpecialKeys(int special_keys_state);
  56
  57 void AtariGemdos_InitOSKeymap(_THIS)
  58 {
  59         int i, vectors_mask;
  60         unsigned long dummy;
  61
  62         SDL_memset(gemdos_currentkeyboard, 0, sizeof(gemdos_currentkeyboard));
  63         SDL_memset(gemdos_previouskeyboard, 0, sizeof(gemdos_previouskeyboard));
  64
  65         use_dev_mouse = (SDL_AtariDevMouse_Open()!=0) ? SDL_TRUE : SDL_FALSE;
  66
  67         vectors_mask = ATARI_XBIOS_JOYSTICKEVENTS;      /* XBIOS joystick events */
  68         if (!use_dev_mouse) {
  69                 vectors_mask |= ATARI_XBIOS_MOUSEEVENTS;        /* XBIOS mouse events */
  70         }
  71 /*      if (Getcookie(C_MiNT, &dummy)==C_FOUND) {
  72                 vectors_mask = 0;
  73         }*/
  74         SDL_AtariXbios_InstallVectors(vectors_mask);
  75 }
  76
  77 void AtariGemdos_PumpEvents(_THIS)
  78 {
  79         int i;
  80         SDL_keysym keysym;
  81
  82         /* Update pressed keys */
  83         SDL_memset(gemdos_currentkeyboard, 0, ATARIBIOS_MAXKEYS);
  84
  85         while (Cconis()!=DEV_BUSY) {
  86                 unsigned long key_pressed;
  87                 key_pressed=Cnecin();
  88                 gemdos_currentkeyboard[(key_pressed>>16)&(ATARIBIOS_MAXKEYS-1)]=0xFF;
  89         }
  90
  91         /* Read special keys */
  92         UpdateSpecialKeys(Kbshift(-1));
  93
  94         /* Now generate events */
  95         for (i=0; i<ATARIBIOS_MAXKEYS; i++) {
  96                 /* Key pressed ? */
  97                 if (gemdos_currentkeyboard[i] && !gemdos_previouskeyboard[i])
  98                         SDL_PrivateKeyboard(SDL_PRESSED,
  99                                 SDL_Atari_TranslateKey(i, &keysym, SDL_TRUE));
 100
 101                 /* Key unpressed ? */
 102                 if (gemdos_previouskeyboard[i] && !gemdos_currentkeyboard[i])
 103                         SDL_PrivateKeyboard(SDL_RELEASED,
 104                                 SDL_Atari_TranslateKey(i, &keysym, SDL_FALSE));
 105         }
 106
 107         if (use_dev_mouse) {
 108                 SDL_AtariDevMouse_PostMouseEvents(this, SDL_TRUE);
 109         } else {
 110                 SDL_AtariXbios_PostMouseEvents(this, SDL_TRUE);
 111         }
 112
 113         /* Will be previous table */
 114         SDL_memcpy(gemdos_previouskeyboard, gemdos_currentkeyboard, sizeof(gemdos_previouskeyboard));
 115 }
 116
 117 static void UpdateSpecialKeys(int special_keys_state)
 118 {
 119 #define UPDATE_SPECIAL_KEYS(numbit,scancode) \
 120         {       \
 121                 if (special_keys_state & (1<<(numbit))) { \
 122                         gemdos_currentkeyboard[scancode]=0xFF; \
 123                 }       \
 124         }
 125
 126         UPDATE_SPECIAL_KEYS(K_RSHIFT, SCANCODE_RIGHTSHIFT);
 127         UPDATE_SPECIAL_KEYS(K_LSHIFT, SCANCODE_LEFTSHIFT);
 128         UPDATE_SPECIAL_KEYS(K_CTRL, SCANCODE_LEFTCONTROL);
 129         UPDATE_SPECIAL_KEYS(K_ALT, SCANCODE_LEFTALT);
 130         UPDATE_SPECIAL_KEYS(K_CAPSLOCK, SCANCODE_CAPSLOCK);
 131 }
 132
 133 void AtariGemdos_ShutdownEvents(void)
 134 {
 135         SDL_AtariXbios_RestoreVectors();
 136         if (use_dev_mouse) {
 137                 SDL_AtariDevMouse_Close();
 138         }
 139 }