Mercurial > sdl-ios-xcode
diff src/video/x11/SDL_eventtouch.c @ 4645:0375d020e7e3
Auto-detects Wacom touch devices.
author | Jim Grandpre <jim.tla@gmail.com> |
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date | Mon, 31 May 2010 00:24:37 -0400 |
parents | |
children | eea1bf53effa |
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--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/src/video/x11/SDL_eventtouch.c Mon May 31 00:24:37 2010 -0400 @@ -0,0 +1,100 @@ +/* + SDL - Simple DirectMedia Layer + Copyright (C) 1997-2010 Sam Lantinga + + This library is free software; you can redistribute it and/or + modify it under the terms of the GNU Lesser General Public + License as published by the Free Software Foundation; either + version 2.1 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 + Lesser General Public License for more details. + + You should have received a copy of the GNU Lesser General Public + License along with this library; if not, write to the Free Software + Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA + + Sam Lantinga + slouken@libsdl.org +*/ +#include "SDL_config.h" +#include "SDL_x11video.h" +#include "SDL_eventtouch.h" +#include "../../events/SDL_touch_c.h" + +#include <linux/input.h> +#include <fcntl.h> + +void +X11_InitTouch(_THIS) +{ + printf("Initializing touch...\n"); + + FILE *fd; + fd = fopen("/proc/bus/input/devices","r"); + + char c; + int i = 0; + char line[256]; + char tstr[256]; + int vendor = -1,product = -1,event = -1; + while(!feof(fd)) { + if(fgets(line,256,fd) <=0) continue; + //printf("%s",line); + if(line[0] == '\n') { + if(vendor == 1386){ + printf("Wacom... Assuming it is a touch device\n"); + sprintf(tstr,"/dev/input/event%i",event); + printf("At location: %s\n",tstr); + + SDL_Touch touch; + touch.pressure_max = 0; + touch.pressure_min = 0; + touch.id = event; + + + + touch.driverdata = SDL_malloc(sizeof(EventTouchData)); + EventTouchData* data = (EventTouchData*)(touch.driverdata); + printf("Opening device...\n"); + //printf("New Touch - DataPtr: %i\n",data); + data->eventStream = open(tstr, + O_RDONLY | O_NONBLOCK); + ioctl (data->eventStream, EVIOCGNAME (sizeof (tstr)), tstr); + printf ("Reading From : %s\n", tstr); + SDL_AddTouch(&touch, tstr); + + } + vendor = -1; + product = -1; + event = -1; + } + else if(line[0] == 'I') { + i = 1; + while(line[i]) { + sscanf(&line[i],"Vendor=%x",&vendor); + sscanf(&line[i],"Product=%x",&product); + i++; + } + } + else if(line[0] == 'H') { + i = 1; + while(line[i]) { + sscanf(&line[i],"event%d",&event); + i++; + } + } + } + + close(fd); +} + +void +X11_QuitTouch(_THIS) +{ + SDL_TouchQuit(); +} + +/* vi: set ts=4 sw=4 expandtab: */