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/*
Copyright (C) 1997-2001 Id Software, Inc.
This program is free software; you can redistribute it and/or
modify it under the terms of the GNU General Public License
as published by the Free Software Foundation; either version 2
of the License, or (at your option) any later version.
This program 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 General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
*/
#include "com_local.h"
#include "key_public.h"
#include "in_public.h"
#include <sys/types.h>
#include <sys/stat.h>
#include <sys/ioctl.h>
#include <unistd.h>
#include <fcntl.h>
#include <linux/input.h>
#include <errno.h>
#include <SDL.h>
static cvar_t *in_device;
static qboolean mouseinitialized;
static qboolean mouseactive;
static int evdev_fd;
#define MAX_EVENTS 64
#define EVENT_SIZE sizeof( struct input_event )
/*
===========
Evdev_SendMouseMoveEvents
===========
*/
static void Evdev_SendMouseMoveEvents( void ) {
struct input_event ev[MAX_EVENTS];
fd_set fdset;
struct timeval timeout;
int bytes, count;
int dx, dy;
int i, button;
unsigned time;
if( !mouseinitialized ) {
return;
}
if( !mouseactive ) {
return;
}
FD_ZERO( &fdset );
FD_SET( evdev_fd, &fdset );
timeout.tv_sec = 0;
timeout.tv_usec = 0;
if( select( FD_SETSIZE, &fdset, NULL, NULL, &timeout ) == -1 ) {
return;
}
if( !FD_ISSET( evdev_fd, &fdset ) ) {
return;
}
bytes = read( evdev_fd, ev, EVENT_SIZE * MAX_EVENTS );
if( bytes < EVENT_SIZE ) {
return;
}
dx = dy = 0;
count = bytes / EVENT_SIZE;
for( i = 0 ; i < count; i++ ) {
time = ev[i].time.tv_sec * 1000 + ev[i].time.tv_usec / 1000;
switch( ev[i].type ) {
case EV_KEY:
if( ev[i].code >= BTN_MOUSE && ev[i].code < BTN_MOUSE + 8 ) {
button = K_MOUSE1 + ev[i].code - BTN_MOUSE;
if( ev[i].value ) {
Key_Event( button, qtrue, time );
} else {
Key_Event( button, qfalse, time );
}
}
break;
case EV_REL:
switch( ev[i].code ) {
case REL_X:
dx += ( int )ev[i].value;
break;
case REL_Y:
dy += ( int )ev[i].value;
break;
case REL_WHEEL:
if( ( int )ev[i].value == 1 ) {
Key_Event( K_MWHEELUP, qtrue, time );
Key_Event( K_MWHEELUP, qfalse, time );
} else if( ( int )ev[i].value == -1 ) {
Key_Event( K_MWHEELDOWN, qtrue, time );
Key_Event( K_MWHEELDOWN, qfalse, time );
}
break;
default:
break;
}
default:
break;
}
}
if( dx || dy ) {
CL_MouseEvent( dx, dy );
}
}
/*
===========
Evdev_ShutdownMouse
===========
*/
static void Evdev_ShutdownMouse( void ) {
if( !mouseinitialized ) {
return;
}
close( evdev_fd );
mouseinitialized = qfalse;
mouseactive = qfalse;
}
/*
===========
Evdev_StartupMouse
===========
*/
static qboolean Evdev_InitMouse( void ) {
in_device = Cvar_Get( "in_device", "/dev/input/event2", CVAR_LATCH );
evdev_fd = open( in_device->string, O_RDONLY );
if( evdev_fd == -1 ) {
Com_EPrintf( "Couldn't open %s: %s\n", in_device->string,
strerror( errno ) );
return qfalse;
}
fcntl( evdev_fd, F_SETFL, fcntl( evdev_fd, F_GETFL, 0 ) | FNDELAY );
Com_Printf( "Event interface initialized.\n" );
mouseinitialized = qtrue;
return qtrue;
}
/*
===========
Evdev_ActivateMouse
Called when the main window gains or loses focus.
The window may have been destroyed and recreated
between a deactivate and an activate.
===========
*/
static void Evdev_ActivateMouse( qboolean active ) {
if( !mouseinitialized ) {
return;
}
if( mouseactive == active ) {
return;
}
#ifdef EVIOCGRAB
if( ioctl( evdev_fd, EVIOCGRAB, active ) == -1 ) {
Com_EPrintf( "Grab/Release failed: %s\n", strerror( errno ) );
}
#endif // EVIOCGRAB
if( active ) {
struct input_event ev;
SDL_ShowCursor( SDL_DISABLE );
while( read( evdev_fd, &ev, EVENT_SIZE ) == EVENT_SIZE )
;
} else {
SDL_ShowCursor( SDL_ENABLE );
}
mouseactive = active;
}
/*
===================
Evdev_ClearMouseStates
===================
*/
static void Evdev_ClearMouseStates( void ) {
}
/*
@@@@@@@@@@@@@@@@@@@
Evdev_FillAPI
@@@@@@@@@@@@@@@@@@@
*/
void Evdev_FillAPI( inputAPI_t *api ) {
api->Init = Evdev_InitMouse;
api->Shutdown = Evdev_ShutdownMouse;
api->Activate = Evdev_ActivateMouse;
api->Frame = Evdev_SendMouseMoveEvents;
api->ClearStates = Evdev_ClearMouseStates;
}
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