src/video/ataricommon/SDL_gemdosevents.c
author Sam Lantinga
Sat, 31 Dec 2011 09:16:08 -0500
branchSDL-1.2
changeset 6137 4720145f848b
parent 5651 abba6814a65c
child 9018 4a9c67d11c9f
permissions -rw-r--r--
Happy New Year!
     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 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 static void UpdateSpecialKeys(int special_keys_state);
    49 
    50 void AtariGemdos_InitOSKeymap(_THIS)
    51 {
    52 	int vectors_mask;
    53 /*	unsigned long dummy;*/
    54 
    55 	SDL_memset(gemdos_currentkeyboard, 0, sizeof(gemdos_currentkeyboard));
    56 	SDL_memset(gemdos_previouskeyboard, 0, sizeof(gemdos_previouskeyboard));
    57 
    58 	use_dev_mouse = (SDL_AtariDevMouse_Open()!=0) ? SDL_TRUE : SDL_FALSE;
    59 
    60 	vectors_mask = ATARI_XBIOS_JOYSTICKEVENTS;	/* XBIOS joystick events */
    61 	if (!use_dev_mouse) {
    62 		vectors_mask |= ATARI_XBIOS_MOUSEEVENTS;	/* XBIOS mouse events */
    63 	}
    64 /*	if (Getcookie(C_MiNT, &dummy)==C_FOUND) {
    65 		vectors_mask = 0;
    66 	}*/
    67 	SDL_AtariXbios_InstallVectors(vectors_mask);
    68 }
    69 
    70 void AtariGemdos_PumpEvents(_THIS)
    71 {
    72 	int i;
    73 	SDL_keysym keysym;
    74 
    75 	/* Update pressed keys */
    76 	SDL_memset(gemdos_currentkeyboard, 0, ATARIBIOS_MAXKEYS);
    77 
    78 	while (Cconis()!=DEV_BUSY) {
    79 		unsigned long key_pressed;
    80 		key_pressed=Cnecin();
    81 		gemdos_currentkeyboard[(key_pressed>>16)&(ATARIBIOS_MAXKEYS-1)]=0xFF;
    82 	}
    83 
    84 	/* Read special keys */
    85 	UpdateSpecialKeys(Kbshift(-1));
    86 
    87 	/* Now generate events */
    88 	for (i=0; i<ATARIBIOS_MAXKEYS; i++) {
    89 		/* Key pressed ? */
    90 		if (gemdos_currentkeyboard[i] && !gemdos_previouskeyboard[i])
    91 			SDL_PrivateKeyboard(SDL_PRESSED,
    92 				SDL_Atari_TranslateKey(i, &keysym, SDL_TRUE));
    93 			
    94 		/* Key unpressed ? */
    95 		if (gemdos_previouskeyboard[i] && !gemdos_currentkeyboard[i])
    96 			SDL_PrivateKeyboard(SDL_RELEASED,
    97 				SDL_Atari_TranslateKey(i, &keysym, SDL_FALSE));
    98 	}
    99 
   100 	if (use_dev_mouse) {
   101 		SDL_AtariDevMouse_PostMouseEvents(this, SDL_TRUE);
   102 	} else {
   103 		SDL_AtariXbios_PostMouseEvents(this, SDL_TRUE);
   104 	}
   105 
   106 	/* Will be previous table */
   107 	SDL_memcpy(gemdos_previouskeyboard, gemdos_currentkeyboard, sizeof(gemdos_previouskeyboard));
   108 }
   109 
   110 static void UpdateSpecialKeys(int special_keys_state)
   111 {
   112 #define UPDATE_SPECIAL_KEYS(numbit,scancode) \
   113 	{	\
   114 		if (special_keys_state & (1<<(numbit))) { \
   115 			gemdos_currentkeyboard[scancode]=0xFF; \
   116 		}	\
   117 	}
   118 
   119 	UPDATE_SPECIAL_KEYS(K_RSHIFT, SCANCODE_RIGHTSHIFT);
   120 	UPDATE_SPECIAL_KEYS(K_LSHIFT, SCANCODE_LEFTSHIFT);
   121 	UPDATE_SPECIAL_KEYS(K_CTRL, SCANCODE_LEFTCONTROL);
   122 	UPDATE_SPECIAL_KEYS(K_ALT, SCANCODE_LEFTALT);
   123 	UPDATE_SPECIAL_KEYS(K_CAPSLOCK, SCANCODE_CAPSLOCK);
   124 }
   125 
   126 void AtariGemdos_ShutdownEvents(void)
   127 {
   128 	SDL_AtariXbios_RestoreVectors();
   129 	if (use_dev_mouse) {
   130 		SDL_AtariDevMouse_Close();
   131 	}
   132 }