src/video/ataricommon/SDL_biosevents.c
author Patrice Mandin
Wed, 20 Sep 2006 19:47:09 +0000
changeset 2030 d774e9d7c2a8
parent 2019 d20f4510c718
child 2031 f54073d86c82
permissions -rw-r--r--
Forward keyboard reworking from 1.2
     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 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
    49 AtariBios_InitOSKeymap(_THIS)
    50 {
    51     int i, vectors_mask;
    52     unsigned long dummy;
    53 
    54     SDL_memset(bios_currentkeyboard, 0, sizeof(bios_currentkeyboard));
    55     SDL_memset(bios_previouskeyboard, 0, sizeof(bios_previouskeyboard));
    56 
    57     use_dev_mouse = (SDL_AtariDevMouse_Open() != 0) ? SDL_TRUE : SDL_FALSE;
    58 
    59     vectors_mask = ATARI_XBIOS_JOYSTICKEVENTS;  /* XBIOS joystick events */
    60     if (!use_dev_mouse) {
    61         vectors_mask |= ATARI_XBIOS_MOUSEEVENTS;        /* XBIOS mouse events */
    62     }
    63     if (Getcookie(C_MiNT, &dummy) == C_FOUND) {
    64         vectors_mask = 0;
    65     }
    66 
    67     SDL_AtariXbios_InstallVectors(vectors_mask);
    68 }
    69 
    70 void
    71 AtariBios_PumpEvents(_THIS)
    72 {
    73     int i;
    74     SDL_keysym keysym;
    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,
   109                sizeof(bios_previouskeyboard));
   110 }
   111 
   112 static void
   113 UpdateSpecialKeys(int special_keys_state)
   114 {
   115 #define UPDATE_SPECIAL_KEYS(numbit,scancode) \
   116 	{	\
   117 		if (special_keys_state & (1<<(numbit))) { \
   118 			bios_currentkeyboard[scancode]=0xFF; \
   119 			bios_currentascii[scancode]=0; \
   120 		}	\
   121 	}
   122 
   123     UPDATE_SPECIAL_KEYS(K_RSHIFT, SCANCODE_RIGHTSHIFT);
   124     UPDATE_SPECIAL_KEYS(K_LSHIFT, SCANCODE_LEFTSHIFT);
   125     UPDATE_SPECIAL_KEYS(K_CTRL, SCANCODE_LEFTCONTROL);
   126     UPDATE_SPECIAL_KEYS(K_ALT, SCANCODE_LEFTALT);
   127     UPDATE_SPECIAL_KEYS(K_CAPSLOCK, SCANCODE_CAPSLOCK);
   128 }
   129 
   130 void
   131 AtariBios_ShutdownEvents(void)
   132 {
   133     SDL_AtariXbios_RestoreVectors();
   134     if (use_dev_mouse) {
   135         SDL_AtariDevMouse_Close();
   136     }
   137 }
   138 
   139 /* vi: set ts=4 sw=4 expandtab: */