src/video/ataricommon/SDL_biosevents.c
author Patrice Mandin
Tue, 31 Jan 2006 21:33:35 +0000
changeset 1310 a201a8c62522
parent 1237 a8068adf156b
child 1312 c9b51268668f
permissions -rw-r--r--
Add flag to post mouse button events or not, and use defined function to post them
     1 /*
     2     SDL - Simple DirectMedia Layer
     3     Copyright (C) 1997-2004 Sam Lantinga
     4 
     5     This library is free software; you can redistribute it and/or
     6     modify it under the terms of the GNU Library General Public
     7     License as published by the Free Software Foundation; either
     8     version 2 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     Library General Public License for more details.
    14 
    15     You should have received a copy of the GNU Library General Public
    16     License along with this library; if not, write to the Free
    17     Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
    18 
    19     Sam Lantinga
    20     slouken@libsdl.org
    21 */
    22 
    23 #ifdef SAVE_RCSID
    24 static char rcsid =
    25  "@(#) $Id$";
    26 #endif
    27 
    28 /*
    29  *	Atari keyboard events manager, using BIOS
    30  *
    31  *	Patrice Mandin
    32  */
    33 
    34 #include <string.h>
    35 
    36 /* Mint includes */
    37 #include <mint/osbind.h>
    38 #include <mint/cookie.h>
    39 
    40 #include "SDL.h"
    41 #include "SDL_sysevents.h"
    42 #include "SDL_events_c.h"
    43 
    44 #include "SDL_atarikeys.h"
    45 #include "SDL_atarievents_c.h"
    46 #include "SDL_xbiosevents_c.h"
    47 
    48 /* To save state of keyboard */
    49 #define ATARIBIOS_MAXKEYS 128
    50 
    51 static unsigned char bios_currentkeyboard[ATARIBIOS_MAXKEYS];
    52 static unsigned char bios_previouskeyboard[ATARIBIOS_MAXKEYS];
    53 static unsigned char bios_currentascii[ATARIBIOS_MAXKEYS];
    54 
    55 /* Special keys state */
    56 enum {
    57 	K_RSHIFT=0,
    58 	K_LSHIFT,
    59 	K_CTRL,
    60 	K_ALT,
    61 	K_CAPSLOCK,
    62 	K_CLRHOME,
    63 	K_INSERT
    64 };
    65 
    66 /* The translation tables from a console scancode to a SDL keysym */
    67 static SDLKey keymap[ATARIBIOS_MAXKEYS];
    68 
    69 static SDL_keysym *TranslateKey(int scancode, int asciicode, SDL_keysym *keysym,
    70 	SDL_bool pressed);
    71 static void UpdateSpecialKeys(int special_keys_state);
    72 
    73 void AtariBios_InitOSKeymap(_THIS)
    74 {
    75 	int i, vectors_mask;
    76 	unsigned long dummy;
    77 
    78 	memset(bios_currentkeyboard, 0, sizeof(bios_currentkeyboard));
    79 	memset(bios_previouskeyboard, 0, sizeof(bios_previouskeyboard));
    80 
    81 	/* Initialize keymap */
    82 	for ( i=0; i<sizeof(keymap); i++ )
    83 		keymap[i] = SDLK_UNKNOWN;
    84 
    85 	/* Functions keys */
    86 	for ( i = 0; i<10; i++ )
    87 		keymap[SCANCODE_F1 + i] = SDLK_F1+i;
    88 
    89 	/* Cursor keypad */
    90 	keymap[SCANCODE_HELP] = SDLK_HELP;
    91 	keymap[SCANCODE_UNDO] = SDLK_UNDO;
    92 	keymap[SCANCODE_INSERT] = SDLK_INSERT;
    93 	keymap[SCANCODE_CLRHOME] = SDLK_HOME;
    94 	keymap[SCANCODE_UP] = SDLK_UP;
    95 	keymap[SCANCODE_DOWN] = SDLK_DOWN;
    96 	keymap[SCANCODE_RIGHT] = SDLK_RIGHT;
    97 	keymap[SCANCODE_LEFT] = SDLK_LEFT;
    98 
    99 	/* Special keys */
   100 	keymap[SCANCODE_ESCAPE] = SDLK_ESCAPE;
   101 	keymap[SCANCODE_BACKSPACE] = SDLK_BACKSPACE;
   102 	keymap[SCANCODE_TAB] = SDLK_TAB;
   103 	keymap[SCANCODE_ENTER] = SDLK_RETURN;
   104 	keymap[SCANCODE_DELETE] = SDLK_DELETE;
   105 	keymap[SCANCODE_LEFTCONTROL] = SDLK_LCTRL;
   106 	keymap[SCANCODE_LEFTSHIFT] = SDLK_LSHIFT;
   107 	keymap[SCANCODE_RIGHTSHIFT] = SDLK_RSHIFT;
   108 	keymap[SCANCODE_LEFTALT] = SDLK_LALT;
   109 	keymap[SCANCODE_CAPSLOCK] = SDLK_CAPSLOCK;
   110 
   111 	vectors_mask = ATARI_XBIOS_MOUSEEVENTS|ATARI_XBIOS_JOYSTICKEVENTS;
   112 	if (Getcookie(C_MiNT, &dummy)==C_FOUND) {
   113 		vectors_mask = 0;
   114 	}
   115 
   116 	SDL_AtariXbios_InstallVectors(vectors_mask);
   117 }
   118 
   119 void AtariBios_PumpEvents(_THIS)
   120 {
   121 	int i;
   122 	SDL_keysym keysym;
   123 
   124 	/* Update pressed keys */
   125 	memset(bios_currentkeyboard, 0, ATARIBIOS_MAXKEYS);
   126 
   127 	while (Bconstat(_CON)) {
   128 		unsigned long key_pressed;
   129 		unsigned char asciicode, scancode;
   130 
   131 		key_pressed=Bconin(_CON);
   132 
   133 		asciicode = key_pressed;
   134 		scancode = key_pressed >> 16;
   135 
   136 		bios_currentkeyboard[scancode]=0xFF;
   137 		bios_currentascii[scancode]=asciicode;
   138 	}
   139 
   140 	/* Read special keys */
   141 	UpdateSpecialKeys(Kbshift(-1));
   142 
   143 	/* Now generate events */
   144 	for (i=0; i<ATARIBIOS_MAXKEYS; i++) {
   145 		/* Key pressed ? */
   146 		if (bios_currentkeyboard[i] && !bios_previouskeyboard[i])
   147 			SDL_PrivateKeyboard(SDL_PRESSED,
   148 				TranslateKey(i, bios_currentascii[i], &keysym, SDL_TRUE));
   149 			
   150 		/* Key unpressed ? */
   151 		if (bios_previouskeyboard[i] && !bios_currentkeyboard[i])
   152 			SDL_PrivateKeyboard(SDL_RELEASED,
   153 				TranslateKey(i, bios_currentascii[i], &keysym, SDL_FALSE));
   154 	}
   155 
   156 	SDL_AtariXbios_PostMouseEvents(this, SDL_TRUE);
   157 
   158 	/* Will be previous table */
   159 	memcpy(bios_previouskeyboard, bios_currentkeyboard, ATARIBIOS_MAXKEYS);
   160 }
   161 
   162 static void UpdateSpecialKeys(int special_keys_state)
   163 {
   164 #define UPDATE_SPECIAL_KEYS(numbit,scancode) \
   165 	{	\
   166 		if (special_keys_state & (1<<(numbit))) { \
   167 			bios_currentkeyboard[scancode]=0xFF; \
   168 			bios_currentascii[scancode]=0; \
   169 		}	\
   170 	}
   171 
   172 	UPDATE_SPECIAL_KEYS(K_RSHIFT, SCANCODE_RIGHTSHIFT);
   173 	UPDATE_SPECIAL_KEYS(K_LSHIFT, SCANCODE_LEFTSHIFT);
   174 	UPDATE_SPECIAL_KEYS(K_CTRL, SCANCODE_LEFTCONTROL);
   175 	UPDATE_SPECIAL_KEYS(K_ALT, SCANCODE_LEFTALT);
   176 	UPDATE_SPECIAL_KEYS(K_CAPSLOCK, SCANCODE_CAPSLOCK);
   177 }
   178 
   179 static SDL_keysym *TranslateKey(int scancode, int asciicode, SDL_keysym *keysym,
   180 	SDL_bool pressed)
   181 {
   182 	/* Set the keysym information */
   183 	keysym->scancode = scancode;
   184 
   185 	if (asciicode)
   186 		keysym->sym = asciicode;		
   187 	else
   188 		keysym->sym = keymap[scancode];
   189 
   190 	keysym->mod = KMOD_NONE;
   191 	keysym->unicode = 0;
   192 	if (SDL_TranslateUNICODE && pressed) {
   193 		keysym->unicode = SDL_AtariToUnicodeTable[asciicode];
   194 	}
   195 
   196 	return(keysym);
   197 }
   198 
   199 void AtariBios_ShutdownEvents(void)
   200 {
   201 	SDL_AtariXbios_RestoreVectors();
   202 }