src/video/ataricommon/SDL_gemdosevents.c
author Patrice Mandin
Wed, 13 Sep 2006 21:18:35 +0000
branchSDL-1.2
changeset 3860 bf1586b58ef2
parent 3854 f1816773a309
child 4149 2325dd996f73
permissions -rw-r--r--
Factorize keyboard mapping between drivers
     1 /*
     2     SDL - Simple DirectMedia Layer
     3     Copyright (C) 1997-2006 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 enum {
    49 	DEV_BUSY=0,
    50 	DEV_READY
    51 };
    52 
    53 static void UpdateSpecialKeys(int special_keys_state);
    54 
    55 void AtariGemdos_InitOSKeymap(_THIS)
    56 {
    57 	int i, vectors_mask;
    58 	unsigned long dummy;
    59 
    60 	SDL_memset(gemdos_currentkeyboard, 0, sizeof(gemdos_currentkeyboard));
    61 	SDL_memset(gemdos_previouskeyboard, 0, sizeof(gemdos_previouskeyboard));
    62 
    63 	use_dev_mouse = (SDL_AtariDevMouse_Open()!=0) ? SDL_TRUE : SDL_FALSE;
    64 
    65 	vectors_mask = ATARI_XBIOS_JOYSTICKEVENTS;	/* XBIOS joystick events */
    66 	if (!use_dev_mouse) {
    67 		vectors_mask |= ATARI_XBIOS_MOUSEEVENTS;	/* XBIOS mouse events */
    68 	}
    69 /*	if (Getcookie(C_MiNT, &dummy)==C_FOUND) {
    70 		vectors_mask = 0;
    71 	}*/
    72 	SDL_AtariXbios_InstallVectors(vectors_mask);
    73 }
    74 
    75 void AtariGemdos_PumpEvents(_THIS)
    76 {
    77 	int i;
    78 	SDL_keysym keysym;
    79 
    80 	/* Update pressed keys */
    81 	SDL_memset(gemdos_currentkeyboard, 0, ATARIBIOS_MAXKEYS);
    82 
    83 	while (Cconis()!=DEV_BUSY) {
    84 		unsigned long key_pressed;
    85 		key_pressed=Cnecin();
    86 		gemdos_currentkeyboard[(key_pressed>>16)&(ATARIBIOS_MAXKEYS-1)]=0xFF;
    87 	}
    88 
    89 	/* Read special keys */
    90 	UpdateSpecialKeys(Kbshift(-1));
    91 
    92 	/* Now generate events */
    93 	for (i=0; i<ATARIBIOS_MAXKEYS; i++) {
    94 		/* Key pressed ? */
    95 		if (gemdos_currentkeyboard[i] && !gemdos_previouskeyboard[i])
    96 			SDL_PrivateKeyboard(SDL_PRESSED,
    97 				SDL_Atari_TranslateKey(i, &keysym, SDL_TRUE));
    98 			
    99 		/* Key unpressed ? */
   100 		if (gemdos_previouskeyboard[i] && !gemdos_currentkeyboard[i])
   101 			SDL_PrivateKeyboard(SDL_RELEASED,
   102 				SDL_Atari_TranslateKey(i, &keysym, SDL_FALSE));
   103 	}
   104 
   105 	if (use_dev_mouse) {
   106 		SDL_AtariDevMouse_PostMouseEvents(this, SDL_TRUE);
   107 	} else {
   108 		SDL_AtariXbios_PostMouseEvents(this, SDL_TRUE);
   109 	}
   110 
   111 	/* Will be previous table */
   112 	SDL_memcpy(gemdos_previouskeyboard, gemdos_currentkeyboard, sizeof(gemdos_previouskeyboard));
   113 }
   114 
   115 static void UpdateSpecialKeys(int special_keys_state)
   116 {
   117 #define UPDATE_SPECIAL_KEYS(numbit,scancode) \
   118 	{	\
   119 		if (special_keys_state & (1<<(numbit))) { \
   120 			gemdos_currentkeyboard[scancode]=0xFF; \
   121 		}	\
   122 	}
   123 
   124 	UPDATE_SPECIAL_KEYS(K_RSHIFT, SCANCODE_RIGHTSHIFT);
   125 	UPDATE_SPECIAL_KEYS(K_LSHIFT, SCANCODE_LEFTSHIFT);
   126 	UPDATE_SPECIAL_KEYS(K_CTRL, SCANCODE_LEFTCONTROL);
   127 	UPDATE_SPECIAL_KEYS(K_ALT, SCANCODE_LEFTALT);
   128 	UPDATE_SPECIAL_KEYS(K_CAPSLOCK, SCANCODE_CAPSLOCK);
   129 }
   130 
   131 void AtariGemdos_ShutdownEvents(void)
   132 {
   133 	SDL_AtariXbios_RestoreVectors();
   134 	if (use_dev_mouse) {
   135 		SDL_AtariDevMouse_Close();
   136 	}
   137 }