/*

     SDL - Simple DirectMedia Layer

     Copyright (C) 1997-2006 Sam Lantinga

     This library is free software; you can redistribute it and/or

     modify it under the terms of the GNU Lesser General Public

     License as published by the Free Software Foundation; either

     version 2.1 of the License, or (at your option) any later version.

     This library is distributed in the hope that it will be useful,

     but WITHOUT ANY WARRANTY; without even the implied warranty of

     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU

     Lesser General Public License for more details.

     You should have received a copy of the GNU Lesser General Public

     License along with this library; if not, write to the Free Software

     Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA

     Sam Lantinga

     slouken@libsdl.org

 */

 #include "SDL_config.h"

 /*

  *	Atari keyboard events manager, using Gemdos

  *

  *	Patrice Mandin

  */

 /* Mint includes */

 #include <mint/osbind.h>

 #include <mint/cookie.h>

 #include "../../events/SDL_sysevents.h"

 #include "../../events/SDL_events_c.h"

 #include "SDL_atarikeys.h"

 #include "SDL_atarievents_c.h"

 #include "SDL_xbiosevents_c.h"

 #include "SDL_ataridevmouse_c.h"

 /* To save state of keyboard */

 static unsigned char gemdos_currentkeyboard[ATARIBIOS_MAXKEYS];

 static unsigned char gemdos_previouskeyboard[ATARIBIOS_MAXKEYS];

 static SDL_bool use_dev_mouse = SDL_FALSE;

 enum {

 	DEV_BUSY=0,

 	DEV_READY

 };

 static void UpdateSpecialKeys(int special_keys_state);

 void

 AtariGemdos_InitOSKeymap(_THIS)

 {

     int i, vectors_mask;

     unsigned long dummy;

     SDL_memset(gemdos_currentkeyboard, 0, sizeof(gemdos_currentkeyboard));

     SDL_memset(gemdos_previouskeyboard, 0, sizeof(gemdos_previouskeyboard));

     use_dev_mouse = (SDL_AtariDevMouse_Open() != 0) ? SDL_TRUE : SDL_FALSE;

     vectors_mask = ATARI_XBIOS_JOYSTICKEVENTS;  /* XBIOS joystick events */

     if (!use_dev_mouse) {

         vectors_mask |= ATARI_XBIOS_MOUSEEVENTS;        /* XBIOS mouse events */

     }

     if (Getcookie(C_MiNT, &dummy) == C_FOUND) {

         vectors_mask = 0;

     }

     SDL_AtariXbios_InstallVectors(vectors_mask);

 }

 void

 AtariGemdos_PumpEvents(_THIS)

 {

     int i;

     SDL_keysym keysym;

     /* Update pressed keys */

     SDL_memset(gemdos_currentkeyboard, 0, ATARIBIOS_MAXKEYS);

     while (Cconis() != DEV_BUSY) {

         unsigned long key_pressed;

         key_pressed=Cnecin();

         gemdos_currentkeyboard[(key_pressed>>16)&(ATARIBIOS_MAXKEYS-1)]=0xFF;

     }

     /* Read special keys */

     UpdateSpecialKeys(Kbshift(-1));

     /* Now generate events */

     for (i = 0; i < ATARIBIOS_MAXKEYS; i++) {

         /* Key pressed ? */

         if (gemdos_currentkeyboard[i] && !gemdos_previouskeyboard[i])

             SDL_PrivateKeyboard(SDL_PRESSED,

                                 SDL_Atari_TranslateKey(i, &keysym, SDL_TRUE));

         /* Key unpressed ? */

         if (gemdos_previouskeyboard[i] && !gemdos_currentkeyboard[i])

             SDL_PrivateKeyboard(SDL_RELEASED,

                                 SDL_Atari_TranslateKey(i, &keysym, SDL_FALSE));

     }

     if (use_dev_mouse) {

         SDL_AtariDevMouse_PostMouseEvents(this, SDL_TRUE);

     } else {

         SDL_AtariXbios_PostMouseEvents(this, SDL_TRUE);

     }

     /* Will be previous table */

     SDL_memcpy(gemdos_previouskeyboard, gemdos_currentkeyboard,

                sizeof(gemdos_previouskeyboard));

 }

 static void

 UpdateSpecialKeys(int special_keys_state)

 {

 #define UPDATE_SPECIAL_KEYS(numbit,scancode) \

 	{	\

 		if (special_keys_state & (1<<(numbit))) { \

 			gemdos_currentkeyboard[scancode]=0xFF; \

 			gemdos_currentascii[scancode]=0; \

 		}	\

 	}

     UPDATE_SPECIAL_KEYS(K_RSHIFT, SCANCODE_RIGHTSHIFT);

     UPDATE_SPECIAL_KEYS(K_LSHIFT, SCANCODE_LEFTSHIFT);

     UPDATE_SPECIAL_KEYS(K_CTRL, SCANCODE_LEFTCONTROL);

     UPDATE_SPECIAL_KEYS(K_ALT, SCANCODE_LEFTALT);

     UPDATE_SPECIAL_KEYS(K_CAPSLOCK, SCANCODE_CAPSLOCK);

 }

 void

 AtariGemdos_ShutdownEvents(void)

 {

     SDL_AtariXbios_RestoreVectors();

     if (use_dev_mouse) {

         SDL_AtariDevMouse_Close();

     }

 }

 /* vi: set ts=4 sw=4 expandtab: */