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SDL_biosevents.c
131 lines (105 loc) · 3.59 KB
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SDL_biosevents.c
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/*
SDL - Simple DirectMedia Layer
Copyright (C) 1997-2009 Sam Lantinga
This library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 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
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with this library; if not, write to the Free Software
Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
Sam Lantinga
slouken@libsdl.org
*/
#include "SDL_config.h"
/*
* Atari keyboard events manager, using BIOS
*
* Patrice Mandin
*/
/* Mint includes */
#include <mint/osbind.h>
#include <mint/cookie.h>
#include "../../events/SDL_sysevents.h"
#include "../../events/SDL_events_c.h"
#include "SDL_atarikeys.h"
#include "SDL_atarievents_c.h"
#include "SDL_xbiosevents_c.h"
#include "SDL_ataridevmouse_c.h"
static unsigned char bios_currentkeyboard[ATARIBIOS_MAXKEYS];
static unsigned char bios_previouskeyboard[ATARIBIOS_MAXKEYS];
static SDL_bool use_dev_mouse = SDL_FALSE;
static void UpdateSpecialKeys(int special_keys_state);
void AtariBios_InitOSKeymap(_THIS)
{
int i, vectors_mask;
unsigned long dummy;
SDL_memset(bios_currentkeyboard, 0, sizeof(bios_currentkeyboard));
SDL_memset(bios_previouskeyboard, 0, sizeof(bios_previouskeyboard));
use_dev_mouse = (SDL_AtariDevMouse_Open()!=0) ? SDL_TRUE : SDL_FALSE;
vectors_mask = ATARI_XBIOS_JOYSTICKEVENTS; /* XBIOS joystick events */
if (!use_dev_mouse) {
vectors_mask |= ATARI_XBIOS_MOUSEEVENTS; /* XBIOS mouse events */
}
/* if (Getcookie(C_MiNT, &dummy)==C_FOUND) {
vectors_mask = 0;
}*/
SDL_AtariXbios_InstallVectors(vectors_mask);
}
void AtariBios_PumpEvents(_THIS)
{
int i;
SDL_keysym keysym;
/* Update pressed keys */
SDL_memset(bios_currentkeyboard, 0, ATARIBIOS_MAXKEYS);
while (Bconstat(_CON)) {
unsigned long key_pressed;
key_pressed=Bconin(_CON);
bios_currentkeyboard[(key_pressed>>16)&(ATARIBIOS_MAXKEYS-1)]=0xFF;
}
/* Read special keys */
UpdateSpecialKeys(Kbshift(-1));
/* Now generate events */
for (i=0; i<ATARIBIOS_MAXKEYS; i++) {
/* Key pressed ? */
if (bios_currentkeyboard[i] && !bios_previouskeyboard[i])
SDL_PrivateKeyboard(SDL_PRESSED,
SDL_Atari_TranslateKey(i, &keysym, SDL_TRUE));
/* Key unpressed ? */
if (bios_previouskeyboard[i] && !bios_currentkeyboard[i])
SDL_PrivateKeyboard(SDL_RELEASED,
SDL_Atari_TranslateKey(i, &keysym, SDL_FALSE));
}
if (use_dev_mouse) {
SDL_AtariDevMouse_PostMouseEvents(this, SDL_TRUE);
} else {
SDL_AtariXbios_PostMouseEvents(this, SDL_TRUE);
}
/* Will be previous table */
SDL_memcpy(bios_previouskeyboard, bios_currentkeyboard, sizeof(bios_previouskeyboard));
}
static void UpdateSpecialKeys(int special_keys_state)
{
#define UPDATE_SPECIAL_KEYS(numbit,scancode) \
{ \
if (special_keys_state & (1<<(numbit))) { \
bios_currentkeyboard[scancode]=0xFF; \
} \
}
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);
}
void AtariBios_ShutdownEvents(void)
{
SDL_AtariXbios_RestoreVectors();
if (use_dev_mouse) {
SDL_AtariDevMouse_Close();
}
}