diff options
Diffstat (limited to 'src/in_evdev.c')
| -rw-r--r-- | src/in_evdev.c | 205 |
1 files changed, 205 insertions, 0 deletions
diff --git a/src/in_evdev.c b/src/in_evdev.c new file mode 100644 index 0000000..8fe32ec --- /dev/null +++ b/src/in_evdev.c @@ -0,0 +1,205 @@ +/* +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 "cl_public.h" +#include "io_sleep.h" + +#include <sys/types.h> +#include <sys/stat.h> +#include <sys/ioctl.h> +#include <unistd.h> +#include <fcntl.h> +#include <linux/input.h> + +#include <SDL.h> + +static cvar_t *in_device; + +static struct { + qboolean initialized; + qboolean grabbed; + int fd; + int dx, dy; + ioentry_t *io; +} evdev; + +#define MAX_EVENTS 64 +#define EVENT_SIZE sizeof( struct input_event ) + +static void GetMouseEvents( void ) { + struct input_event ev[MAX_EVENTS]; + int bytes, count; + int dx, dy; + int i, button; + unsigned time; + + if( !evdev.initialized || !evdev.grabbed || !evdev.io->canread ) { + 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: + evdev.dx += ( int )ev[i].value; + break; + case REL_Y: + evdev.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; + } + } +} + +static qboolean GetMouseMotion( int *dx, int *dy ) { + if( !evdev.initialized || !evdev.grabbed ) { + return qfalse; + } + *dx = evdev.dx; + *dy = evdev.dy; + evdev.dx = 0; + evdev.dy = 0; + return qtrue; +} + +static void ShutdownMouse( void ) { + if( !evdev.initialized ) { + return; + } + IO_Remove( evdev.fd ); + close( evdev.fd ); + memset( &evdev, 0, sizeof( evdev ) ); +} + +static qboolean InitMouse( void ) { + in_device = Cvar_Get( "in_device", "", 0 ); + if( !in_device->string[0] ) { + Com_WPrintf( "No evdev input device specified.\n" ); + return qfalse; + } + + 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 ); + evdev.io = IO_Add( evdev.fd ); + + Com_Printf( "Evdev interface initialized.\n" ); + evdev.initialized = qtrue; + + return qtrue; +} + +static void GrabMouse( grab_t grab ) { + if( !evdev.initialized ) { + return; + } + + if( evdev.grabbed == grab ) { + return; + } + +#if 0//def EVIOCGRAB + if( ioctl( evdev.fd, EVIOCGRAB, active ) == -1 ) { + Com_EPrintf( "Grab/Release failed: %s\n", strerror( errno ) ); + } +#endif // EVIOCGRAB + + if( grab == IN_GRAB ) { + struct input_event ev; + + SDL_WM_GrabInput( SDL_GRAB_ON ); + SDL_WM_SetCaption( "[" APPLICATION "]", APPLICATION ); + SDL_ShowCursor( SDL_DISABLE ); + + evdev.io->wantread = qtrue; + while( read( evdev.fd, &ev, EVENT_SIZE ) == EVENT_SIZE ) + ; + } else { + if( evdev.grabbed == IN_GRAB ) { + SDL_WM_GrabInput( SDL_GRAB_OFF ); + SDL_WM_SetCaption( APPLICATION, APPLICATION ); + } + if( grab == IN_HIDE ) { + SDL_ShowCursor( SDL_DISABLE ); + } else { + SDL_ShowCursor( SDL_ENABLE ); + } + evdev.io->wantread = qfalse; + } + + evdev.dx = 0; + evdev.dy = 0; + evdev.grabbed = grab; +} + +/* +@@@@@@@@@@@@@@@@@@@ +DI_FillAPI +@@@@@@@@@@@@@@@@@@@ +*/ +void DI_FillAPI( inputAPI_t *api ) { + api->Init = InitMouse; + api->Shutdown = ShutdownMouse; + api->Grab = GrabMouse; + api->GetEvents = GetMouseEvents; + api->GetMotion = GetMouseMotion; +} + + |