l4/pkg/libsdl/contrib/src/video/ataricommon/SDL_ikbdevents.c

   1 /*
   2     SDL - Simple DirectMedia Layer
   3     Copyright (C) 1997-2012 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         SDL_memset((void *) SDL_AtariIkbd_keyboard, KEY_UNDEFINED, sizeof(SDL_AtariIkbd_keyboard));
  49
  50         /* Now install our handler */
  51         SDL_AtariIkbd_mouseb = SDL_AtariIkbd_mousex = SDL_AtariIkbd_mousey = 0;
  52         atari_prevmouseb = 0;
  53
  54         Supexec(SDL_AtariIkbdInstall);
  55 }
  56
  57 static int atari_GetButton(int button)
  58 {
  59         switch(button)
  60         {
  61                 case 0:
  62                         return SDL_BUTTON_RIGHT;
  63                         break;
  64                 case 1:
  65                 default:
  66                         return SDL_BUTTON_LEFT;
  67                         break;
  68         }
  69 }
  70
  71 void AtariIkbd_PumpEvents(_THIS)
  72 {
  73         int i;
  74         SDL_keysym keysym;
  75
  76         /*--- Send keyboard events ---*/
  77
  78         for (i=0; i<ATARIBIOS_MAXKEYS; i++) {
  79                 /* Key pressed ? */
  80                 if (SDL_AtariIkbd_keyboard[i]==KEY_PRESSED) {
  81                         SDL_PrivateKeyboard(SDL_PRESSED,
  82                                 SDL_Atari_TranslateKey(i, &keysym, SDL_TRUE));
  83                         SDL_AtariIkbd_keyboard[i]=KEY_UNDEFINED;
  84                 }
  85
  86                 /* Key released ? */
  87                 if (SDL_AtariIkbd_keyboard[i]==KEY_RELEASED) {
  88                         SDL_PrivateKeyboard(SDL_RELEASED,
  89                                 SDL_Atari_TranslateKey(i, &keysym, SDL_FALSE));
  90                         SDL_AtariIkbd_keyboard[i]=KEY_UNDEFINED;
  91                 }
  92         }
  93
  94         /*--- Send mouse events ---*/
  95
  96         /* Mouse motion ? */
  97         if (SDL_AtariIkbd_mousex || SDL_AtariIkbd_mousey) {
  98                 SDL_PrivateMouseMotion(0, 1, SDL_AtariIkbd_mousex, SDL_AtariIkbd_mousey);
  99                 SDL_AtariIkbd_mousex = SDL_AtariIkbd_mousey = 0;
 100         }
 101
 102         /* Mouse button ? */
 103         if (SDL_AtariIkbd_mouseb != atari_prevmouseb) {
 104                 for (i=0;i<2;i++) {
 105                         int curbutton, prevbutton;
 106
 107                         curbutton = SDL_AtariIkbd_mouseb & (1<<i);
 108                         prevbutton = atari_prevmouseb & (1<<i);
 109
 110                         if (curbutton && !prevbutton) {
 111                                 SDL_PrivateMouseButton(SDL_PRESSED, atari_GetButton(i), 0, 0);
 112                         }
 113                         if (!curbutton && prevbutton) {
 114                                 SDL_PrivateMouseButton(SDL_RELEASED, atari_GetButton(i), 0, 0);
 115                         }
 116                 }
 117                 atari_prevmouseb = SDL_AtariIkbd_mouseb;
 118         }
 119 }
 120
 121 void AtariIkbd_ShutdownEvents(void)
 122 {
 123         Supexec(SDL_AtariIkbdUninstall);
 124 }