diff options
Diffstat (limited to 'source/in_evdev.c')
| -rw-r--r-- | source/in_evdev.c | 227 |
1 files changed, 227 insertions, 0 deletions
diff --git a/source/in_evdev.c b/source/in_evdev.c new file mode 100644 index 0000000..a34eabf --- /dev/null +++ b/source/in_evdev.c @@ -0,0 +1,227 @@ +/* +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; + uint32 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; +} + + |