src/video/ataricommon/SDL_biosevents.c
author Patrice Mandin
Fri, 26 Aug 2011 14:37:39 +0200
branchSDL-1.2
changeset 5649 02ab15cfa992
parent 4159 a1b03ba2fcd0
child 6137 4720145f848b
permissions -rw-r--r--
Fix various warnings for uninitialized or unused variables and functions
     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 BIOS
    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 static unsigned char bios_currentkeyboard[ATARIBIOS_MAXKEYS];
    43 static unsigned char bios_previouskeyboard[ATARIBIOS_MAXKEYS];
    44 static SDL_bool use_dev_mouse = SDL_FALSE;
    45 
    46 static void UpdateSpecialKeys(int special_keys_state);
    47 
    48 void AtariBios_InitOSKeymap(_THIS)
    49 {
    50 	int vectors_mask;
    51 /*	unsigned long dummy;*/
    52 
    53 	SDL_memset(bios_currentkeyboard, 0, sizeof(bios_currentkeyboard));
    54 	SDL_memset(bios_previouskeyboard, 0, sizeof(bios_previouskeyboard));
    55 
    56 	use_dev_mouse = (SDL_AtariDevMouse_Open()!=0) ? SDL_TRUE : SDL_FALSE;
    57 
    58 	vectors_mask = ATARI_XBIOS_JOYSTICKEVENTS;	/* XBIOS joystick events */
    59 	if (!use_dev_mouse) {
    60 		vectors_mask |= ATARI_XBIOS_MOUSEEVENTS;	/* XBIOS mouse events */
    61 	}
    62 /*	if (Getcookie(C_MiNT, &dummy)==C_FOUND) {
    63 		vectors_mask = 0;
    64 	}*/
    65 
    66 	SDL_AtariXbios_InstallVectors(vectors_mask);
    67 }
    68 
    69 void AtariBios_PumpEvents(_THIS)
    70 {
    71 	int i;
    72 	SDL_keysym keysym;
    73 
    74 	/* Update pressed keys */
    75 	SDL_memset(bios_currentkeyboard, 0, ATARIBIOS_MAXKEYS);
    76 
    77 	while (Bconstat(_CON)) {
    78 		unsigned long key_pressed;
    79 		key_pressed=Bconin(_CON);
    80 		bios_currentkeyboard[(key_pressed>>16)&(ATARIBIOS_MAXKEYS-1)]=0xFF;
    81 	}
    82 
    83 	/* Read special keys */
    84 	UpdateSpecialKeys(Kbshift(-1));
    85 
    86 	/* Now generate events */
    87 	for (i=0; i<ATARIBIOS_MAXKEYS; i++) {
    88 		/* Key pressed ? */
    89 		if (bios_currentkeyboard[i] && !bios_previouskeyboard[i])
    90 			SDL_PrivateKeyboard(SDL_PRESSED,
    91 				SDL_Atari_TranslateKey(i, &keysym, SDL_TRUE));
    92 			
    93 		/* Key unpressed ? */
    94 		if (bios_previouskeyboard[i] && !bios_currentkeyboard[i])
    95 			SDL_PrivateKeyboard(SDL_RELEASED,
    96 				SDL_Atari_TranslateKey(i, &keysym, SDL_FALSE));
    97 	}
    98 
    99 	if (use_dev_mouse) {
   100 		SDL_AtariDevMouse_PostMouseEvents(this, SDL_TRUE);
   101 	} else {
   102 		SDL_AtariXbios_PostMouseEvents(this, SDL_TRUE);
   103 	}
   104 
   105 	/* Will be previous table */
   106 	SDL_memcpy(bios_previouskeyboard, bios_currentkeyboard, sizeof(bios_previouskeyboard));
   107 }
   108 
   109 static void UpdateSpecialKeys(int special_keys_state)
   110 {
   111 #define UPDATE_SPECIAL_KEYS(numbit,scancode) \
   112 	{	\
   113 		if (special_keys_state & (1<<(numbit))) { \
   114 			bios_currentkeyboard[scancode]=0xFF; \
   115 		}	\
   116 	}
   117 
   118 	UPDATE_SPECIAL_KEYS(K_RSHIFT, SCANCODE_RIGHTSHIFT);
   119 	UPDATE_SPECIAL_KEYS(K_LSHIFT, SCANCODE_LEFTSHIFT);
   120 	UPDATE_SPECIAL_KEYS(K_CTRL, SCANCODE_LEFTCONTROL);
   121 	UPDATE_SPECIAL_KEYS(K_ALT, SCANCODE_LEFTALT);
   122 	UPDATE_SPECIAL_KEYS(K_CAPSLOCK, SCANCODE_CAPSLOCK);
   123 }
   124 
   125 void AtariBios_ShutdownEvents(void)
   126 {
   127 	SDL_AtariXbios_RestoreVectors();
   128 	if (use_dev_mouse) {
   129 		SDL_AtariDevMouse_Close();
   130 	}
   131 }