Mercurial > sdl-ios-xcode
diff src/video/ataricommon/SDL_xbiosmouseevents.c @ 281:c5010ab8ba35
Added initial support for Atari (thanks Patrice!)
author | Sam Lantinga <slouken@libsdl.org> |
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date | Sun, 17 Feb 2002 19:54:28 +0000 |
parents | |
children | f6ffac90895c |
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--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/src/video/ataricommon/SDL_xbiosmouseevents.c Sun Feb 17 19:54:28 2002 +0000 @@ -0,0 +1,127 @@ +/* + SDL - Simple DirectMedia Layer + Copyright (C) 1997, 1998, 1999, 2000, 2001 Sam Lantinga + + 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 + +/* + * IKBD 6301 mouse vector + * + * Patrice Mandin + */ + +#include <stdlib.h> +#include <string.h> +#include <mint/osbind.h> + +#include "SDL_events_c.h" +#include "SDL_xbiosmouseinterrupt_s.h" + +static _KBDVECS *kbdvecs; /* Pointer to access vectors */ +static _KBDVECS sys_kbdvecs; /* Backup of system vectors */ + +/* Variables */ + +static Uint16 atari_prevmouseb; /* buttons */ + +void AtariXbios_InstallMouseVector(void) +{ + void *oldpile; + + /* Read IKBD vectors base */ + kbdvecs=Kbdvbase(); + + /* Go to supervisor mode */ + oldpile=(void *)Super(0); + + /* Backup system vectors */ + memcpy(&sys_kbdvecs, kbdvecs, sizeof(_KBDVECS)); + + /* Install our vector */ + SDL_AtariXbiosMouseInstall(kbdvecs,SDL_AtariXbiosMouseVector); + + /* Back to user mode */ + Super(oldpile); + + /* Clear variables */ + SDL_AtariXbios_mouseb = SDL_AtariXbios_mousex = SDL_AtariXbios_mousey = 0; + atari_prevmouseb = 0; +} + +void AtariXbios_RestoreMouseVector(void) +{ + void *oldpile; + + /* Go to supervisor mode */ + oldpile=(void *)Super(NULL); + + /* Reinstall system vector */ + SDL_AtariXbiosMouseInstall(kbdvecs,sys_kbdvecs.mousevec); + + /* Back to user mode */ + Super(oldpile); +} + +static int atari_GetButton(int button) +{ + switch(button) + { + case 0: + return SDL_BUTTON_RIGHT; + break; + case 1: + default: + return SDL_BUTTON_LEFT; + break; + } +} + +void AtariXbios_PostMouseEvents(_THIS) +{ + /* 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 (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; + } +}