SDL_gemdosevents.c
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/*
SDL - Simple DirectMedia Layer
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Copyright (C) 1997-2004 Sam Lantinga
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This library is free software; you can redistribute it and/or
modify it under the terms of the GNU Library General Public
License as published by the Free Software Foundation; either
version 2 of the License, or (at your option) any later version.
This library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Library General Public License for more details.
You should have received a copy of the GNU Library General Public
License along with this library; if not, write to the Free
Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
Sam Lantinga
slouken@libsdl.org
*/
#ifdef SAVE_RCSID
static char rcsid =
"@(#) $Id$";
#endif
/*
* Atari keyboard events manager, using Gemdos
*
* Patrice Mandin
*/
#include <string.h>
/* Mint includes */
#include <mint/osbind.h>
#include "SDL.h"
#include "SDL_sysevents.h"
#include "SDL_events_c.h"
#include "SDL_atarikeys.h"
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#include "SDL_xbiosevents_c.h"
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/* To save state of keyboard */
#define ATARIBIOS_MAXKEYS 128
static unsigned char gemdos_currentkeyboard[ATARIBIOS_MAXKEYS];
static unsigned char gemdos_previouskeyboard[ATARIBIOS_MAXKEYS];
static unsigned char gemdos_currentascii[ATARIBIOS_MAXKEYS];
/* Special keys state */
enum {
K_RSHIFT=0,
K_LSHIFT,
K_CTRL,
K_ALT,
K_CAPSLOCK,
K_CLRHOME,
K_INSERT
};
enum {
DEV_BUSY=0,
DEV_READY
};
/* The translation tables from a console scancode to a SDL keysym */
static SDLKey keymap[ATARIBIOS_MAXKEYS];
static SDL_keysym *TranslateKey(int scancode, int asciicode, SDL_keysym *keysym);
static void UpdateSpecialKeys(int special_keys_state);
void AtariGemdos_InitOSKeymap(_THIS)
{
int i;
memset(gemdos_currentkeyboard, 0, sizeof(gemdos_currentkeyboard));
memset(gemdos_previouskeyboard, 0, sizeof(gemdos_previouskeyboard));
/* Initialize keymap */
for ( i=0; i<sizeof(keymap); i++ )
keymap[i] = SDLK_UNKNOWN;
/* Functions keys */
for ( i = 0; i<10; i++ )
keymap[SCANCODE_F1 + i] = SDLK_F1+i;
/* Cursor keypad */
keymap[SCANCODE_HELP] = SDLK_HELP;
keymap[SCANCODE_UNDO] = SDLK_UNDO;
keymap[SCANCODE_INSERT] = SDLK_INSERT;
keymap[SCANCODE_CLRHOME] = SDLK_HOME;
keymap[SCANCODE_UP] = SDLK_UP;
keymap[SCANCODE_DOWN] = SDLK_DOWN;
keymap[SCANCODE_RIGHT] = SDLK_RIGHT;
keymap[SCANCODE_LEFT] = SDLK_LEFT;
/* Special keys */
keymap[SCANCODE_ESCAPE] = SDLK_ESCAPE;
keymap[SCANCODE_BACKSPACE] = SDLK_BACKSPACE;
keymap[SCANCODE_TAB] = SDLK_TAB;
keymap[SCANCODE_ENTER] = SDLK_RETURN;
keymap[SCANCODE_DELETE] = SDLK_DELETE;
keymap[SCANCODE_LEFTCONTROL] = SDLK_LCTRL;
keymap[SCANCODE_LEFTSHIFT] = SDLK_LSHIFT;
keymap[SCANCODE_RIGHTSHIFT] = SDLK_RSHIFT;
keymap[SCANCODE_LEFTALT] = SDLK_LALT;
keymap[SCANCODE_CAPSLOCK] = SDLK_CAPSLOCK;
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SDL_AtariXbios_InstallVectors(ATARI_XBIOS_MOUSEEVENTS|ATARI_XBIOS_JOYSTICKEVENTS);
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}
void AtariGemdos_PumpEvents(_THIS)
{
int i;
SDL_keysym keysym;
/* Update pressed keys */
memset(gemdos_currentkeyboard, 0, ATARIBIOS_MAXKEYS);
while (Cconis()!=DEV_BUSY) {
unsigned long key_pressed;
unsigned char scancode, asciicode;
key_pressed=Cnecin();
asciicode = key_pressed;
scancode = key_pressed >> 16;
gemdos_currentkeyboard[scancode]=0xFF;
gemdos_currentascii[scancode]=asciicode;
}
/* Read special keys */
UpdateSpecialKeys(Kbshift(-1));
/* Now generate events */
for (i=0; i<ATARIBIOS_MAXKEYS; i++) {
/* Key pressed ? */
if (gemdos_currentkeyboard[i] && !gemdos_previouskeyboard[i])
SDL_PrivateKeyboard(SDL_PRESSED, TranslateKey(i, gemdos_currentascii[i], &keysym));
/* Key unpressed ? */
if (gemdos_previouskeyboard[i] && !gemdos_currentkeyboard[i])
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SDL_PrivateKeyboard(SDL_RELEASED, TranslateKey(i, gemdos_currentascii[i], &keysym));
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SDL_AtariXbios_PostMouseEvents(this);
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/* Will be previous table */
memcpy(gemdos_previouskeyboard, gemdos_currentkeyboard, ATARIBIOS_MAXKEYS);
}
static void UpdateSpecialKeys(int special_keys_state)
{
#define UPDATE_SPECIAL_KEYS(numbit,scancode) \
{ \
if (special_keys_state & (1<<(numbit))) { \
gemdos_currentkeyboard[scancode]=0xFF; \
gemdos_currentascii[scancode]=0; \
} \
}
UPDATE_SPECIAL_KEYS(K_RSHIFT, SCANCODE_RIGHTSHIFT);
UPDATE_SPECIAL_KEYS(K_LSHIFT, SCANCODE_LEFTSHIFT);
UPDATE_SPECIAL_KEYS(K_CTRL, SCANCODE_LEFTCONTROL);
UPDATE_SPECIAL_KEYS(K_ALT, SCANCODE_LEFTALT);
UPDATE_SPECIAL_KEYS(K_CAPSLOCK, SCANCODE_CAPSLOCK);
}
static SDL_keysym *TranslateKey(int scancode, int asciicode, SDL_keysym *keysym)
{
/* Set the keysym information */
keysym->scancode = scancode;
if (asciicode)
keysym->sym = asciicode;
else
keysym->sym = keymap[scancode];
keysym->mod = KMOD_NONE;
keysym->unicode = 0;
return(keysym);
}
void AtariGemdos_ShutdownEvents(void)
{
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SDL_AtariXbios_RestoreVectors();