/*+
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    SDL - Simple DirectMedia Layer+
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    Copyright (C) 1997-2006 Sam Lantinga+
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+
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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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+
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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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+
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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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+
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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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/*+
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 *	XBIOS mouse & joystick vectors+
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 *+
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 *	Patrice Mandin+
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 */+
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+
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#include <mint/osbind.h>+
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+
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#include "../../events/SDL_events_c.h"+
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#include "SDL_xbiosevents_c.h"+
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#include "SDL_xbiosinterrupt_s.h"+
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+
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/* Variables */+
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+
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int SDL_AtariXbios_enabled = 0;+
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+
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/* Local variables */+
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+
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static _KBDVECS *kbdvecs;       /* Pointer to access system vectors */+
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static Uint16 atari_prevmouseb; /* buttons */+
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+
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/* Functions */+
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+
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void+
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SDL_AtariXbios_InstallVectors(int vectors_mask)+
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{+
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    void *oldpile;+
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+
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    /* Clear variables */+
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    SDL_AtariXbios_mouselock =+
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        SDL_AtariXbios_mouseb =+
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        SDL_AtariXbios_mousex =+
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        SDL_AtariXbios_mousey =+
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        SDL_AtariXbios_joystick = atari_prevmouseb = 0;+
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+
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    if (vectors_mask == 0) {+
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        SDL_AtariXbios_enabled = 0;+
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        return;+
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    }+
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+
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    /* Read IKBD vectors base */+
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    kbdvecs = Kbdvbase();+
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+
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    /* Go to supervisor mode */+
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    oldpile = (void *) Super(0);+
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+
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    /* Install our vectors */+
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    SDL_AtariXbios_Install(kbdvecs,+
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                           (vectors_mask & ATARI_XBIOS_MOUSEEVENTS) ?+
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                           SDL_AtariXbios_MouseVector : NULL,+
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                           (vectors_mask & ATARI_XBIOS_JOYSTICKEVENTS) ?+
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                           SDL_AtariXbios_JoystickVector : NULL);+
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+
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    /* Back to user mode */+
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    Super(oldpile);+
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+
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    SDL_AtariXbios_enabled = 1;+
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}+
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+
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void+
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SDL_AtariXbios_RestoreVectors(void)+
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{+
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    void *oldpile;+
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+
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    if (SDL_AtariXbios_enabled == 0) {+
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        return;+
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    }+
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+
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    /* Read IKBD vectors base */+
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    kbdvecs = Kbdvbase();+
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+
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    /* Go to supervisor mode */+
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    oldpile = (void *) Super(NULL);+
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+
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    /* Reinstall system vector */+
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    SDL_AtariXbios_Restore(kbdvecs);+
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+
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    /* Back to user mode */+
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    Super(oldpile);+
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}+
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+
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static int+
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atari_GetButton(int button)+
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{+
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    switch (button) {+
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    case 0:+
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        return SDL_BUTTON_RIGHT;+
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        break;+
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    case 1:+
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    default:+
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        return SDL_BUTTON_LEFT;+
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        break;+
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    }+
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}+
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+
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void+
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SDL_AtariXbios_PostMouseEvents(_THIS, SDL_bool buttonEvents)+
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{+
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    if (SDL_AtariXbios_enabled == 0) {+
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        return;+
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    }+
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+
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    /* Mouse motion ? */+
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    if (SDL_AtariXbios_mousex || SDL_AtariXbios_mousey) {+
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        SDL_PrivateMouseMotion(0, 1, SDL_AtariXbios_mousex,+
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                               SDL_AtariXbios_mousey);+
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        SDL_AtariXbios_mousex = SDL_AtariXbios_mousey = 0;+
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    }+
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+
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    /* Mouse button ? */+
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    if (buttonEvents && (SDL_AtariXbios_mouseb != atari_prevmouseb)) {+
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        int i;+
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+
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        for (i = 0; i < 2; i++) {+
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            int curbutton, prevbutton;+
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+
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            curbutton = SDL_AtariXbios_mouseb & (1 << i);+
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            prevbutton = atari_prevmouseb & (1 << i);+
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+
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            if (curbutton && !prevbutton) {+
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                SDL_PrivateMouseButton(SDL_PRESSED, atari_GetButton(i), 0, 0);+
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            }+
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            if (!curbutton && prevbutton) {+
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                SDL_PrivateMouseButton(SDL_RELEASED,+
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                                       atari_GetButton(i), 0, 0);+
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            }+
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        }+
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        atari_prevmouseb = SDL_AtariXbios_mouseb;+
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    }+
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}+
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+
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void+
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SDL_AtariXbios_LockMousePosition(SDL_bool lockPosition)+
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{+
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    SDL_AtariXbios_mouselock = lockPosition;+
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}+
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+
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/* vi: set ts=4 sw=4 expandtab: */+
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