src/video/ataricommon/SDL_ikbdevents.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 hardware IKBD
  26  *
  27  *      Patrice Mandin
  28  */
  29
  30 /* Mint includes */
  31 #include <mint/osbind.h>
  32
  33 #include "../../events/SDL_sysevents.h"
  34 #include "../../events/SDL_events_c.h"
  35
  36 #include "SDL_atarikeys.h"
  37 #include "SDL_atarievents_c.h"
  38 #include "SDL_ikbdinterrupt_s.h"
  39
  40 #define KEY_PRESSED             0xff
  41 #define KEY_UNDEFINED   0x80
  42 #define KEY_RELEASED    0x00
  43
  44 static Uint16 atari_prevmouseb; /* save state of mouse buttons */
  45
  46 void AtariIkbd_InitOSKeymap(_THIS)
  47 {
  48         int i;
  49
  50         SDL_memset(SDL_AtariIkbd_keyboard, KEY_UNDEFINED, sizeof(SDL_AtariIkbd_keyboard));
  51
  52         /* Now install our handler */
  53         SDL_AtariIkbd_mouseb = SDL_AtariIkbd_mousex = SDL_AtariIkbd_mousey = 0;
  54         atari_prevmouseb = 0;
  55
  56         Supexec(SDL_AtariIkbdInstall);
  57 }
  58
  59 static int atari_GetButton(int button)
  60 {
  61         switch(button)
  62         {
  63                 case 0:
  64                         return SDL_BUTTON_RIGHT;
  65                         break;
  66                 case 1:
  67                 default:
  68                         return SDL_BUTTON_LEFT;
  69                         break;
  70         }
  71 }
  72
  73 void AtariIkbd_PumpEvents(_THIS)
  74 {
  75         int i, specialkeys;
  76         SDL_keysym keysym;
  77
  78         /*--- Send keyboard events ---*/
  79
  80         for (i=0; i<ATARIBIOS_MAXKEYS; i++) {
  81                 /* Key pressed ? */
  82                 if (SDL_AtariIkbd_keyboard[i]==KEY_PRESSED) {
  83                         SDL_PrivateKeyboard(SDL_PRESSED,
  84                                 SDL_Atari_TranslateKey(i, &keysym, SDL_TRUE));
  85                         SDL_AtariIkbd_keyboard[i]=KEY_UNDEFINED;
  86                 }
  87
  88                 /* Key released ? */
  89                 if (SDL_AtariIkbd_keyboard[i]==KEY_RELEASED) {
  90                         SDL_PrivateKeyboard(SDL_RELEASED,
  91                                 SDL_Atari_TranslateKey(i, &keysym, SDL_FALSE));
  92                         SDL_AtariIkbd_keyboard[i]=KEY_UNDEFINED;
  93                 }
  94         }
  95
  96         /*--- Send mouse events ---*/
  97
  98         /* Mouse motion ? */
  99         if (SDL_AtariIkbd_mousex || SDL_AtariIkbd_mousey) {
 100                 SDL_PrivateMouseMotion(0, 1, SDL_AtariIkbd_mousex, SDL_AtariIkbd_mousey);
 101                 SDL_AtariIkbd_mousex = SDL_AtariIkbd_mousey = 0;
 102         }
 103
 104         /* Mouse button ? */
 105         if (SDL_AtariIkbd_mouseb != atari_prevmouseb) {
 106                 for (i=0;i<2;i++) {
 107                         int curbutton, prevbutton;
 108
 109                         curbutton = SDL_AtariIkbd_mouseb & (1<<i);
 110                         prevbutton = atari_prevmouseb & (1<<i);
 111
 112                         if (curbutton && !prevbutton) {
 113                                 SDL_PrivateMouseButton(SDL_PRESSED, atari_GetButton(i), 0, 0);
 114                         }
 115                         if (!curbutton && prevbutton) {
 116                                 SDL_PrivateMouseButton(SDL_RELEASED, atari_GetButton(i), 0, 0);
 117                         }
 118                 }
 119                 atari_prevmouseb = SDL_AtariIkbd_mouseb;
 120         }
 121 }
 122
 123 void AtariIkbd_ShutdownEvents(void)
 124 {
 125         Supexec(SDL_AtariIkbdUninstall);
 126 }