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SDL_xbiosevents.c
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/*
SDL - Simple DirectMedia Layer
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Copyright (C) 1997-2009 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,
but WITHOUT ANY WARRANTY; without even the implied warranty of
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
License along with this library; if not, write to the Free Software
Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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Sam Lantinga
slouken@libsdl.org
*/
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#include "SDL_config.h"
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* XBIOS mouse & joystick vectors
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*
* Patrice Mandin
*/
#include <mint/osbind.h>
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#include "../../events/SDL_events_c.h"
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#include "SDL_xbiosevents_c.h"
#include "SDL_xbiosinterrupt_s.h"
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/* Variables */
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int SDL_AtariXbios_enabled = 0;
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/* Local variables */
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static _KBDVECS *kbdvecs; /* Pointer to access system vectors */
static Uint16 atari_prevmouseb; /* buttons */
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/* Functions */
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void
SDL_AtariXbios_InstallVectors(int vectors_mask)
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void *oldpile;
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/* Clear variables */
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SDL_AtariXbios_mouselock =
SDL_AtariXbios_mouseb =
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SDL_AtariXbios_mousex =
SDL_AtariXbios_mousey =
SDL_AtariXbios_joystick = atari_prevmouseb = 0;
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if (vectors_mask == 0) {
SDL_AtariXbios_enabled = 0;
return;
}
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/* Read IKBD vectors base */
kbdvecs = Kbdvbase();
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/* Go to supervisor mode */
oldpile = (void *) Super(0);
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/* Install our vectors */
SDL_AtariXbios_Install(kbdvecs,
(vectors_mask & ATARI_XBIOS_MOUSEEVENTS) ?
SDL_AtariXbios_MouseVector : NULL,
(vectors_mask & ATARI_XBIOS_JOYSTICKEVENTS) ?
SDL_AtariXbios_JoystickVector : NULL);
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/* Back to user mode */
Super(oldpile);
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SDL_AtariXbios_enabled = 1;
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void
SDL_AtariXbios_RestoreVectors(void)
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void *oldpile;
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if (SDL_AtariXbios_enabled == 0) {
return;
}
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/* Read IKBD vectors base */
kbdvecs = Kbdvbase();
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/* Go to supervisor mode */
oldpile = (void *) Super(NULL);
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/* Reinstall system vector */
SDL_AtariXbios_Restore(kbdvecs);
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/* Back to user mode */
Super(oldpile);
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static int
atari_GetButton(int button)
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switch (button) {
case 0:
return SDL_BUTTON_RIGHT;
break;
case 1:
default:
return SDL_BUTTON_LEFT;
break;
}
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void
SDL_AtariXbios_PostMouseEvents(_THIS, SDL_bool buttonEvents)
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if (SDL_AtariXbios_enabled == 0) {
return;
}
/* Mouse motion ? */
if (SDL_AtariXbios_mousex || SDL_AtariXbios_mousey) {
SDL_PrivateMouseMotion(0, 1, SDL_AtariXbios_mousex,
SDL_AtariXbios_mousey);
SDL_AtariXbios_mousex = SDL_AtariXbios_mousey = 0;
}
/* Mouse button ? */
if (buttonEvents && (SDL_AtariXbios_mouseb != atari_prevmouseb)) {
int i;
for (i = 0; i < 2; i++) {
int curbutton, prevbutton;
curbutton = SDL_AtariXbios_mouseb & (1 << i);
prevbutton = atari_prevmouseb & (1 << i);
if (curbutton && !prevbutton) {
SDL_PrivateMouseButton(SDL_PRESSED, atari_GetButton(i), 0, 0);
}
if (!curbutton && prevbutton) {
SDL_PrivateMouseButton(SDL_RELEASED,
atari_GetButton(i), 0, 0);
}
}
atari_prevmouseb = SDL_AtariXbios_mouseb;
}
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void
SDL_AtariXbios_LockMousePosition(SDL_bool lockPosition)
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{
SDL_AtariXbios_mouselock = lockPosition;
}
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/* vi: set ts=4 sw=4 expandtab: */