src/video/ataricommon/SDL_biosevents.c
author Patrice Mandin
Mon, 28 Jul 2014 11:44:39 +0200
branchSDL-1.2
changeset 9018 4a9c67d11c9f
parent 6137 4720145f848b
permissions -rw-r--r--
atari: Do not use system interrupt for handling timer. Do it from userspace, like RISCOS backend.
     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 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 	SDL_AtariMint_BackgroundTasks();
    75 
    76 	/* Update pressed keys */
    77 	SDL_memset(bios_currentkeyboard, 0, ATARIBIOS_MAXKEYS);
    78 
    79 	while (Bconstat(_CON)) {
    80 		unsigned long key_pressed;
    81 		key_pressed=Bconin(_CON);
    82 		bios_currentkeyboard[(key_pressed>>16)&(ATARIBIOS_MAXKEYS-1)]=0xFF;
    83 	}
    84 
    85 	/* Read special keys */
    86 	UpdateSpecialKeys(Kbshift(-1));
    87 
    88 	/* Now generate events */
    89 	for (i=0; i<ATARIBIOS_MAXKEYS; i++) {
    90 		/* Key pressed ? */
    91 		if (bios_currentkeyboard[i] && !bios_previouskeyboard[i])
    92 			SDL_PrivateKeyboard(SDL_PRESSED,
    93 				SDL_Atari_TranslateKey(i, &keysym, SDL_TRUE));
    94 			
    95 		/* Key unpressed ? */
    96 		if (bios_previouskeyboard[i] && !bios_currentkeyboard[i])
    97 			SDL_PrivateKeyboard(SDL_RELEASED,
    98 				SDL_Atari_TranslateKey(i, &keysym, SDL_FALSE));
    99 	}
   100 
   101 	if (use_dev_mouse) {
   102 		SDL_AtariDevMouse_PostMouseEvents(this, SDL_TRUE);
   103 	} else {
   104 		SDL_AtariXbios_PostMouseEvents(this, SDL_TRUE);
   105 	}
   106 
   107 	/* Will be previous table */
   108 	SDL_memcpy(bios_previouskeyboard, bios_currentkeyboard, sizeof(bios_previouskeyboard));
   109 }
   110 
   111 static void UpdateSpecialKeys(int special_keys_state)
   112 {
   113 #define UPDATE_SPECIAL_KEYS(numbit,scancode) \
   114 	{	\
   115 		if (special_keys_state & (1<<(numbit))) { \
   116 			bios_currentkeyboard[scancode]=0xFF; \
   117 		}	\
   118 	}
   119 
   120 	UPDATE_SPECIAL_KEYS(K_RSHIFT, SCANCODE_RIGHTSHIFT);
   121 	UPDATE_SPECIAL_KEYS(K_LSHIFT, SCANCODE_LEFTSHIFT);
   122 	UPDATE_SPECIAL_KEYS(K_CTRL, SCANCODE_LEFTCONTROL);
   123 	UPDATE_SPECIAL_KEYS(K_ALT, SCANCODE_LEFTALT);
   124 	UPDATE_SPECIAL_KEYS(K_CAPSLOCK, SCANCODE_CAPSLOCK);
   125 }
   126 
   127 void AtariBios_ShutdownEvents(void)
   128 {
   129 	SDL_AtariXbios_RestoreVectors();
   130 	if (use_dev_mouse) {
   131 		SDL_AtariDevMouse_Close();
   132 	}
   133 }