src/video/ataricommon/SDL_gemdosevents.c
author Patrice Mandin <patmandin@gmail.com>
Thu, 07 Sep 2006 20:50:13 +0000
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/me dumb, sizeof(keymap != number of elements
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/*
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    SDL - Simple DirectMedia Layer
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    Copyright (C) 1997-2006 Sam Lantinga
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    This library is free software; you can redistribute it and/or
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    modify it under the terms of the GNU Lesser General Public
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    License as published by the Free Software Foundation; either
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    version 2.1 of the License, or (at your option) any later version.
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    This library is distributed in the hope that it will be useful,
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    but WITHOUT ANY WARRANTY; without even the implied warranty of
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    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
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    Lesser General Public License for more details.
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    You should have received a copy of the GNU Lesser General Public
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    License along with this library; if not, write to the Free Software
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    Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
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    Sam Lantinga
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    slouken@libsdl.org
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*/
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#include "SDL_config.h"
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/*
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 *	Atari keyboard events manager, using Gemdos
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 *
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 *	Patrice Mandin
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 */
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/* Mint includes */
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#include <mint/osbind.h>
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#include <mint/cookie.h>
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#include "../../events/SDL_sysevents.h"
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#include "../../events/SDL_events_c.h"
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#include "SDL_atarikeys.h"
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#include "SDL_atarievents_c.h"
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#include "SDL_xbiosevents_c.h"
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#include "SDL_ataridevmouse_c.h"
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/* To save state of keyboard */
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#define ATARIBIOS_MAXKEYS 128
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static unsigned char gemdos_currentkeyboard[ATARIBIOS_MAXKEYS];
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static unsigned char gemdos_previouskeyboard[ATARIBIOS_MAXKEYS];
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static unsigned char gemdos_currentascii[ATARIBIOS_MAXKEYS];
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static SDL_bool use_dev_mouse = SDL_FALSE;
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/* Special keys state */
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enum
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{
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    K_RSHIFT = 0,
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    K_LSHIFT,
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    K_CTRL,
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    K_ALT,
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    K_CAPSLOCK,
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    K_CLRHOME,
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    K_INSERT
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};
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enum
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{
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    DEV_BUSY = 0,
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    DEV_READY
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};
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/* The translation tables from a console scancode to a SDL keysym */
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static SDLKey keymap[ATARIBIOS_MAXKEYS];
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static SDL_keysym *TranslateKey(int scancode, int asciicode,
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                                SDL_keysym * keysym, SDL_bool pressed);
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static void UpdateSpecialKeys(int special_keys_state);
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void
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AtariGemdos_InitOSKeymap(_THIS)
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{
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    int i, vectors_mask;
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    unsigned long dummy;
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    SDL_memset(gemdos_currentkeyboard, 0, sizeof(gemdos_currentkeyboard));
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    SDL_memset(gemdos_previouskeyboard, 0, sizeof(gemdos_previouskeyboard));
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    /* Initialize keymap */
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    for (i = 0; i < ATARIBIOS_MAXKEYS; i++)
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        keymap[i] = SDLK_UNKNOWN;
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    /* Functions keys */
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    for (i = 0; i < 10; i++)
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        keymap[SCANCODE_F1 + i] = SDLK_F1 + i;
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    /* Cursor keypad */
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    keymap[SCANCODE_HELP] = SDLK_HELP;
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    keymap[SCANCODE_UNDO] = SDLK_UNDO;
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    keymap[SCANCODE_INSERT] = SDLK_INSERT;
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    keymap[SCANCODE_CLRHOME] = SDLK_HOME;
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    keymap[SCANCODE_UP] = SDLK_UP;
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    keymap[SCANCODE_DOWN] = SDLK_DOWN;
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    keymap[SCANCODE_RIGHT] = SDLK_RIGHT;
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    keymap[SCANCODE_LEFT] = SDLK_LEFT;
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    /* Special keys */
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    keymap[SCANCODE_ESCAPE] = SDLK_ESCAPE;
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    keymap[SCANCODE_BACKSPACE] = SDLK_BACKSPACE;
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    keymap[SCANCODE_TAB] = SDLK_TAB;
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    keymap[SCANCODE_ENTER] = SDLK_RETURN;
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    keymap[SCANCODE_DELETE] = SDLK_DELETE;
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    keymap[SCANCODE_LEFTCONTROL] = SDLK_LCTRL;
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    keymap[SCANCODE_LEFTSHIFT] = SDLK_LSHIFT;
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    keymap[SCANCODE_RIGHTSHIFT] = SDLK_RSHIFT;
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    keymap[SCANCODE_LEFTALT] = SDLK_LALT;
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    keymap[SCANCODE_CAPSLOCK] = SDLK_CAPSLOCK;
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    use_dev_mouse = (SDL_AtariDevMouse_Open() != 0) ? SDL_TRUE : SDL_FALSE;
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    vectors_mask = ATARI_XBIOS_JOYSTICKEVENTS;  /* XBIOS joystick events */
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    if (!use_dev_mouse) {
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        vectors_mask |= ATARI_XBIOS_MOUSEEVENTS;        /* XBIOS mouse events */
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    }
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    if (Getcookie(C_MiNT, &dummy) == C_FOUND) {
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        vectors_mask = 0;
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    }
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    SDL_AtariXbios_InstallVectors(vectors_mask);
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}
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void
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AtariGemdos_PumpEvents(_THIS)
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{
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    int i;
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    SDL_keysym keysym;
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    /* Update pressed keys */
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    SDL_memset(gemdos_currentkeyboard, 0, ATARIBIOS_MAXKEYS);
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    while (Cconis() != DEV_BUSY) {
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        unsigned long key_pressed;
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        unsigned char scancode, asciicode;
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        key_pressed = Cnecin();
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        asciicode = key_pressed;
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        scancode = key_pressed >> 16;
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        gemdos_currentkeyboard[scancode] = 0xFF;
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        gemdos_currentascii[scancode] = asciicode;
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    }
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   147
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    /* Read special keys */
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    UpdateSpecialKeys(Kbshift(-1));
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    /* Now generate events */
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    for (i = 0; i < ATARIBIOS_MAXKEYS; i++) {
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        /* Key pressed ? */
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        if (gemdos_currentkeyboard[i] && !gemdos_previouskeyboard[i])
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            SDL_PrivateKeyboard(SDL_PRESSED,
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                                TranslateKey(i, gemdos_currentascii[i],
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                                             &keysym, SDL_TRUE));
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        /* Key unpressed ? */
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        if (gemdos_previouskeyboard[i] && !gemdos_currentkeyboard[i])
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            SDL_PrivateKeyboard(SDL_RELEASED,
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                                TranslateKey(i, gemdos_currentascii[i],
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                                             &keysym, SDL_FALSE));
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    }
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    if (use_dev_mouse) {
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        SDL_AtariDevMouse_PostMouseEvents(this, SDL_TRUE);
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    } else {
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        SDL_AtariXbios_PostMouseEvents(this, SDL_TRUE);
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    }
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    /* Will be previous table */
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    SDL_memcpy(gemdos_previouskeyboard, gemdos_currentkeyboard,
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               ATARIBIOS_MAXKEYS);
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}
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static void
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UpdateSpecialKeys(int special_keys_state)
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{
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#define UPDATE_SPECIAL_KEYS(numbit,scancode) \
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	{	\
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		if (special_keys_state & (1<<(numbit))) { \
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			gemdos_currentkeyboard[scancode]=0xFF; \
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			gemdos_currentascii[scancode]=0; \
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		}	\
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	}
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    UPDATE_SPECIAL_KEYS(K_RSHIFT, SCANCODE_RIGHTSHIFT);
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    UPDATE_SPECIAL_KEYS(K_LSHIFT, SCANCODE_LEFTSHIFT);
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    UPDATE_SPECIAL_KEYS(K_CTRL, SCANCODE_LEFTCONTROL);
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    UPDATE_SPECIAL_KEYS(K_ALT, SCANCODE_LEFTALT);
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    UPDATE_SPECIAL_KEYS(K_CAPSLOCK, SCANCODE_CAPSLOCK);
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}
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static SDL_keysym *
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TranslateKey(int scancode, int asciicode, SDL_keysym * keysym,
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             SDL_bool pressed)
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{
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    /* Set the keysym information */
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    keysym->scancode = scancode;
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    if (asciicode)
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        keysym->sym = asciicode;
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    else
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        keysym->sym = keymap[scancode];
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    keysym->mod = KMOD_NONE;
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    keysym->unicode = 0;
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    if (SDL_TranslateUNICODE && pressed) {
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        keysym->unicode = SDL_AtariToUnicodeTable[asciicode];
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    }
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    return (keysym);
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}
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void
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AtariGemdos_ShutdownEvents(void)
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{
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    SDL_AtariXbios_RestoreVectors();
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    if (use_dev_mouse) {
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        SDL_AtariDevMouse_Close();
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    }
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}
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/* vi: set ts=4 sw=4 expandtab: */