src/video/ataricommon/SDL_gemdosevents.c
author Sam Lantinga
Mon, 29 May 2006 04:04:35 +0000
branchSDL-1.3
changeset 1668 4da1ee79c9af
parent 1662 782fd950bd46
permissions -rw-r--r--
more tweaking indent options
     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 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 #define ATARIBIOS_MAXKEYS 128
    44 
    45 static unsigned char gemdos_currentkeyboard[ATARIBIOS_MAXKEYS];
    46 static unsigned char gemdos_previouskeyboard[ATARIBIOS_MAXKEYS];
    47 static unsigned char gemdos_currentascii[ATARIBIOS_MAXKEYS];
    48 static SDL_bool use_dev_mouse = SDL_FALSE;
    49 
    50 /* Special keys state */
    51 enum
    52 {
    53     K_RSHIFT = 0,
    54     K_LSHIFT,
    55     K_CTRL,
    56     K_ALT,
    57     K_CAPSLOCK,
    58     K_CLRHOME,
    59     K_INSERT
    60 };
    61 
    62 enum
    63 {
    64     DEV_BUSY = 0,
    65     DEV_READY
    66 };
    67 
    68 /* The translation tables from a console scancode to a SDL keysym */
    69 static SDLKey keymap[ATARIBIOS_MAXKEYS];
    70 
    71 static SDL_keysym *TranslateKey(int scancode, int asciicode,
    72                                 SDL_keysym * keysym, SDL_bool pressed);
    73 static void UpdateSpecialKeys(int special_keys_state);
    74 
    75 void
    76 AtariGemdos_InitOSKeymap(_THIS)
    77 {
    78     int i, vectors_mask;
    79     unsigned long dummy;
    80 
    81     SDL_memset(gemdos_currentkeyboard, 0, sizeof(gemdos_currentkeyboard));
    82     SDL_memset(gemdos_previouskeyboard, 0, sizeof(gemdos_previouskeyboard));
    83 
    84     /* Initialize keymap */
    85     for (i = 0; i < sizeof(keymap); i++)
    86         keymap[i] = SDLK_UNKNOWN;
    87 
    88     /* Functions keys */
    89     for (i = 0; i < 10; i++)
    90         keymap[SCANCODE_F1 + i] = SDLK_F1 + i;
    91 
    92     /* Cursor keypad */
    93     keymap[SCANCODE_HELP] = SDLK_HELP;
    94     keymap[SCANCODE_UNDO] = SDLK_UNDO;
    95     keymap[SCANCODE_INSERT] = SDLK_INSERT;
    96     keymap[SCANCODE_CLRHOME] = SDLK_HOME;
    97     keymap[SCANCODE_UP] = SDLK_UP;
    98     keymap[SCANCODE_DOWN] = SDLK_DOWN;
    99     keymap[SCANCODE_RIGHT] = SDLK_RIGHT;
   100     keymap[SCANCODE_LEFT] = SDLK_LEFT;
   101 
   102     /* Special keys */
   103     keymap[SCANCODE_ESCAPE] = SDLK_ESCAPE;
   104     keymap[SCANCODE_BACKSPACE] = SDLK_BACKSPACE;
   105     keymap[SCANCODE_TAB] = SDLK_TAB;
   106     keymap[SCANCODE_ENTER] = SDLK_RETURN;
   107     keymap[SCANCODE_DELETE] = SDLK_DELETE;
   108     keymap[SCANCODE_LEFTCONTROL] = SDLK_LCTRL;
   109     keymap[SCANCODE_LEFTSHIFT] = SDLK_LSHIFT;
   110     keymap[SCANCODE_RIGHTSHIFT] = SDLK_RSHIFT;
   111     keymap[SCANCODE_LEFTALT] = SDLK_LALT;
   112     keymap[SCANCODE_CAPSLOCK] = SDLK_CAPSLOCK;
   113 
   114     use_dev_mouse = (SDL_AtariDevMouse_Open() != 0) ? SDL_TRUE : SDL_FALSE;
   115 
   116     vectors_mask = ATARI_XBIOS_JOYSTICKEVENTS;  /* XBIOS joystick events */
   117     if (!use_dev_mouse) {
   118         vectors_mask |= ATARI_XBIOS_MOUSEEVENTS;        /* XBIOS mouse events */
   119     }
   120     if (Getcookie(C_MiNT, &dummy) == C_FOUND) {
   121         vectors_mask = 0;
   122     }
   123     SDL_AtariXbios_InstallVectors(vectors_mask);
   124 }
   125 
   126 void
   127 AtariGemdos_PumpEvents(_THIS)
   128 {
   129     int i;
   130     SDL_keysym keysym;
   131 
   132     /* Update pressed keys */
   133     SDL_memset(gemdos_currentkeyboard, 0, ATARIBIOS_MAXKEYS);
   134 
   135     while (Cconis() != DEV_BUSY) {
   136         unsigned long key_pressed;
   137         unsigned char scancode, asciicode;
   138 
   139         key_pressed = Cnecin();
   140 
   141         asciicode = key_pressed;
   142         scancode = key_pressed >> 16;
   143 
   144         gemdos_currentkeyboard[scancode] = 0xFF;
   145         gemdos_currentascii[scancode] = asciicode;
   146     }
   147 
   148     /* Read special keys */
   149     UpdateSpecialKeys(Kbshift(-1));
   150 
   151     /* Now generate events */
   152     for (i = 0; i < ATARIBIOS_MAXKEYS; i++) {
   153         /* Key pressed ? */
   154         if (gemdos_currentkeyboard[i] && !gemdos_previouskeyboard[i])
   155             SDL_PrivateKeyboard(SDL_PRESSED,
   156                                 TranslateKey(i, gemdos_currentascii[i],
   157                                              &keysym, SDL_TRUE));
   158 
   159         /* Key unpressed ? */
   160         if (gemdos_previouskeyboard[i] && !gemdos_currentkeyboard[i])
   161             SDL_PrivateKeyboard(SDL_RELEASED,
   162                                 TranslateKey(i, gemdos_currentascii[i],
   163                                              &keysym, SDL_FALSE));
   164     }
   165 
   166     if (use_dev_mouse) {
   167         SDL_AtariDevMouse_PostMouseEvents(this, SDL_TRUE);
   168     } else {
   169         SDL_AtariXbios_PostMouseEvents(this, SDL_TRUE);
   170     }
   171 
   172     /* Will be previous table */
   173     SDL_memcpy(gemdos_previouskeyboard, gemdos_currentkeyboard,
   174                ATARIBIOS_MAXKEYS);
   175 }
   176 
   177 static void
   178 UpdateSpecialKeys(int special_keys_state)
   179 {
   180 #define UPDATE_SPECIAL_KEYS(numbit,scancode) \
   181 	{	\
   182 		if (special_keys_state & (1<<(numbit))) { \
   183 			gemdos_currentkeyboard[scancode]=0xFF; \
   184 			gemdos_currentascii[scancode]=0; \
   185 		}	\
   186 	}
   187 
   188     UPDATE_SPECIAL_KEYS(K_RSHIFT, SCANCODE_RIGHTSHIFT);
   189     UPDATE_SPECIAL_KEYS(K_LSHIFT, SCANCODE_LEFTSHIFT);
   190     UPDATE_SPECIAL_KEYS(K_CTRL, SCANCODE_LEFTCONTROL);
   191     UPDATE_SPECIAL_KEYS(K_ALT, SCANCODE_LEFTALT);
   192     UPDATE_SPECIAL_KEYS(K_CAPSLOCK, SCANCODE_CAPSLOCK);
   193 }
   194 
   195 static SDL_keysym *
   196 TranslateKey(int scancode, int asciicode, SDL_keysym * keysym,
   197              SDL_bool pressed)
   198 {
   199     /* Set the keysym information */
   200     keysym->scancode = scancode;
   201 
   202     if (asciicode)
   203         keysym->sym = asciicode;
   204     else
   205         keysym->sym = keymap[scancode];
   206 
   207     keysym->mod = KMOD_NONE;
   208     keysym->unicode = 0;
   209     if (SDL_TranslateUNICODE && pressed) {
   210         keysym->unicode = SDL_AtariToUnicodeTable[asciicode];
   211     }
   212 
   213     return (keysym);
   214 }
   215 
   216 void
   217 AtariGemdos_ShutdownEvents(void)
   218 {
   219     SDL_AtariXbios_RestoreVectors();
   220     if (use_dev_mouse) {
   221         SDL_AtariDevMouse_Close();
   222     }
   223 }
   224 
   225 /* vi: set ts=4 sw=4 expandtab: */