Added Test Directory. Touch input works in touchSimp for wacom bamboo fun on Ubuntu linux. Not yet integrated into library. Should support other touch devices and other linux distros, but not tested on anything else.

touchTest/makefile

@@ -0,0 +1,3 @@
+SDLTest : touchSimp.c touchPong.c
+	gcc touchSimp.c -o touchSimp `sdl-config --cflags --libs` -g
+	gcc touchPong.c -o touchPong `sdl-config --cflags --libs` -g

touchTest/makefile~

@@ -0,0 +1,3 @@
+SDLTest : touchSimp.c touchPong.c
+	gcc touchSimp.c -o touchSimp `sdl-config --cflags --libs` -gSDLTest : 
+	gcc touchPong.c -o touchPong `sdl-config --cflags --libs` -g

touchTest/testIn.c

@@ -0,0 +1,69 @@
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <unistd.h>
+#include <errno.h>
+#include <fcntl.h>
+#include <dirent.h>
+#include <linux/input.h>
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <sys/select.h>
+#include <sys/time.h>
+#include <termios.h>
+#include <signal.h>
+
+void handler (int sig)
+{
+  printf ("\nexiting...(%d)\n", sig);
+  exit (0);
+}
+
+void perror_exit (char *error)
+{
+  perror (error);
+  handler (9);
+}
+
+int main (int argc, char *argv[])
+{
+  struct input_event ev[64];
+  int fd, rd, value, size = sizeof (struct input_event);
+  char name[256] = "Unknown";
+  char *device = NULL;
+
+  //Setup check
+  if (argv[1] == NULL){
+      printf("Please specify (on the command line) the path to the dev event interface device\n");
+      exit (0);
+    }
+
+  if ((getuid ()) != 0)
+    printf ("You are not root! This may not work...\n");
+
+  if (argc > 1)
+    device = argv[1];
+
+  //Open Device
+  if ((fd = open (device, O_RDONLY)) == -1)
+    printf ("%s is not a vaild device.\n", device);
+
+  //Print Device Name
+  ioctl (fd, EVIOCGNAME (sizeof (name)), name);
+  printf ("Reading From : %s (%s)\n", device, name);
+
+  while (1){
+      
+    if ((rd = read (fd, ev, size * 64)) < size)
+      perror_exit ("read()");          
+    printf("time: %i\n type: %X\n code: %X\n value: %i\n ",ev[0].time,ev[0].type,ev[0].value,ev[0].value);
+
+      value = ev[0].value;
+
+      if (value != ' ' && ev[1].value == 1 && ev[1].type == 1){ // Only read the key press event
+	   printf ("Code[%d]\n", (ev[1].code));
+      }
+  }
+
+  return 0;
+}

touchTest/testIn.c~

@@ -0,0 +1,69 @@
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <unistd.h>
+#include <errno.h>
+#include <fcntl.h>
+#include <dirent.h>
+#include <linux/input.h>
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <sys/select.h>
+#include <sys/time.h>
+#include <termios.h>
+#include <signal.h>
+
+void handler (int sig)
+{
+  printf ("\nexiting...(%d)\n", sig);
+  exit (0);
+}
+
+void perror_exit (char *error)
+{
+  perror (error);
+  handler (9);
+}
+
+int main (int argc, char *argv[])
+{
+  struct input_event ev[64];
+  int fd, rd, value, size = sizeof (struct input_event);
+  char name[256] = "Unknown";
+  char *device = NULL;
+
+  //Setup check
+  if (argv[1] == NULL){
+      printf("Please specify (on the command line) the path to the dev event interface device\n");
+      exit (0);
+    }
+
+  if ((getuid ()) != 0)
+    printf ("You are not root! This may not work...\n");
+
+  if (argc > 1)
+    device = argv[1];
+
+  //Open Device
+  if ((fd = open (device, O_RDONLY)) == -1)
+    printf ("%s is not a vaild device.\n", device);
+
+  //Print Device Name
+  ioctl (fd, EVIOCGNAME (sizeof (name)), name);
+  printf ("Reading From : %s (%s)\n", device, name);
+
+  while (1){
+      
+    if ((rd = read (fd, ev, size * 64)) < size)
+      perror_exit ("read()");          
+    printf("time: %i\n type: %X\n code: %X\n value: %i\n ",ev[0].time,ev[0].type,ev[0].value,ev[0].value);
+
+      value = ev[0].value;
+
+      if (value != ' ' && ev[1].value == 1 && ev[1].type == 1){ // Only read the key press event
+	   printf ("Code[%d]\n", (ev[1].code));
+      }
+  }
+
+  return 0;
+}

touchTest/touchPong.c

@@ -0,0 +1,272 @@
+#include <stdio.h>
+#include <SDL.h>
+#include <math.h>
+#include <linux/input.h>
+#include <fcntl.h>
+
+
+#define PI 3.1415926535897
+#define WIDTH 640
+#define HEIGHT 480
+#define BPP 4
+#define DEPTH 32
+
+
+#define MAX_FINGERS 2
+
+int mousx,mousy;
+int keystat[512];
+int bstatus;
+
+
+
+typedef struct {
+  int x,y;
+} Point;
+
+Point finger[MAX_FINGERS];
+
+//Pong Code
+Point ball,ballv;
+
+
+void handler (int sig)
+{
+  printf ("\nexiting...(%d)\n", sig);
+  exit (0);
+}
+
+void perror_exit (char *error)
+{
+  perror (error);
+  handler (9);
+}
+
+
+void setpix(SDL_Surface *screen, int x, int y, int col)
+{
+  Uint32 *pixmem32;
+  Uint32 colour;
+  
+  if((unsigned)x > screen->w) return;
+  if((unsigned)y > screen->h) return;
+
+  colour = SDL_MapRGB( screen->format, (col>>16)&0xFF, (col>>8)&0xFF, col&0xFF);
+  
+  pixmem32 = (Uint32*) screen->pixels  + y*screen->pitch/BPP + x;
+  *pixmem32 = colour;
+}
+
+void drawCircle(SDL_Surface* screen,int x,int y,int r,int c)
+{
+
+  float a;
+  for(a=0;a<2*PI;a+=1.f/(float)r)
+  {
+    setpix(screen,(int)(x+r*cos(a)),(int)(y+r*sin(a)),c);
+  }
+}
+
+void DrawScreen(SDL_Surface* screen, int h)
+{
+  int x, y, xm,ym,c;
+  if(SDL_MUSTLOCK(screen))
+    {                                              
+      if(SDL_LockSurface(screen) < 0) return;
+    }
+  for(y = 0; y < screen->h; y++ )
+    {
+      for( x = 0; x < screen->w; x++ )
+        {
+	  //setpixel(screen, x, y, (x*x)/256+3*y+h, (y*y)/256+x+h, h);
+	  //xm = (x+h)%screen->w;
+	  //ym = (y+h)%screen->w;
+	  //c = sin(h/256*2*PI)*x*y/screen->w/screen->h;
+	  //setpix(screen,x,y,255*sin(xm/screen->w*2*PI),sin(h/255*2*PI)*255*y/screen->h,c);
+	  setpix(screen,x,y,((x%255)<<16) + ((y%255)<<8) + (x+y)%255);
+        }
+    }
+  drawCircle(screen,mousx,mousy,30,0xFFFFFF);
+  int i;
+  for(i=0;i<MAX_FINGERS;i++)
+    drawCircle(screen,finger[i].x,finger[i].y,30,0xFFFFFF);
+  
+  drawCircle(screen,ball.x,ball.y,30,0xFF00FF);
+
+  if(SDL_MUSTLOCK(screen)) SDL_UnlockSurface(screen);
+  
+  SDL_Flip(screen);
+}
+
+SDL_Surface* initScreen(int width,int height)
+{
+  return SDL_SetVideoMode(width, height, DEPTH,
+			  SDL_HWSURFACE | SDL_RESIZABLE);
+}
+
+int main(int argc, char* argv[])
+{
+  struct input_event ev[64];
+  int fd, rd, value, size = sizeof (struct input_event);
+  char name[256] = "Unknown";
+  char *device = NULL;
+
+  
+  
+  //Setup check
+  if (argv[1] == NULL){
+    printf("Please specify (on the command line) the path to the dev event interface device\n");
+    exit (0);
+  }
+  
+  if ((getuid ()) != 0)
+    printf ("You are not root! This may not work...\n");
+  
+  if (argc > 1)
+    device = argv[1];
+  
+  //Open Device
+  if ((fd = open (device, O_RDONLY)) == -1)
+    printf ("%s is not a vaild device.\n", device);
+  
+  //Print Device Name
+  ioctl (fd, EVIOCGNAME (sizeof (name)), name);
+  printf ("Reading From : %s (%s)\n", device, name);
+  
+  
+  
+  
+  
+  SDL_Surface *screen;
+  SDL_Event event;
+  
+  int keypress = 0;
+  int h=0,s=1,i,j;
+  int tx,ty,curf=0;
+
+
+
+  memset(keystat,0,512*sizeof(keystat[0]));
+  if (SDL_Init(SDL_INIT_VIDEO) < 0 ) return 1;
+  
+  if (!(screen = initScreen(WIDTH,HEIGHT)))
+    {
+      SDL_Quit();
+      return 1;
+    }
+  ball.x = screen->w/2;
+  ball.y = screen->h/2;
+  ballv.x = -3;
+  ballv.y = 1;
+  while(!keystat[27]) 
+    {
+      //Poll SDL
+      while(SDL_PollEvent(&event)) 
+	{
+	  switch (event.type) 
+	    {
+	    case SDL_QUIT:
+	      keystat[27] = 1;
+	      break;
+	    case SDL_KEYDOWN:
+	      //printf("%i\n",event.key.keysym.sym);
+	      keystat[event.key.keysym.sym] = 1;
+	      //keypress = 1;
+	      break;
+	    case SDL_KEYUP:
+	      //printf("%i\n",event.key.keysym.sym);
+	      keystat[event.key.keysym.sym] = 0;
+	      //keypress = 1;
+	      break;
+	    case SDL_VIDEORESIZE:
+	      if (!(screen = initScreen(event.resize.w,
+					event.resize.h)))
+	      {
+		SDL_Quit();
+		return 1;
+	      }
+	      break;
+	    case SDL_MOUSEMOTION:
+	      mousx = event.motion.x;
+	      mousy = event.motion.y; 
+	      break;
+	    case SDL_MOUSEBUTTONDOWN:
+	      bstatus |=  (1<<(event.button.button-1));
+	      break;
+	    case SDL_MOUSEBUTTONUP:
+	      bstatus &= ~(1<<(event.button.button-1));
+	      break;
+	    }
+	}
+
+      //poll for Touch <- Goal: make this a case:      
+      if ((rd = read (fd, ev, size * 64)) < size)
+	perror_exit ("read()");          
+      //printf("time: %i\n type: %X\n code: %X\n value: %i\n ",
+      //     ev->time,ev->type,ev->code,ev->value);
+      for (i = 0; i < rd / sizeof(struct input_event); i++)
+	switch (ev[i].type)	
+	  {
+	  case EV_ABS:
+	    if(ev[i].code == ABS_X)
+	      tx = ev[i].value;
+	    else if (ev[i].code == ABS_Y)
+	      ty = ev[i].value;
+	    else if (ev[i].code == ABS_MISC)
+	      {	     
+		//printf("Misc:type: %X\n     code: %X\n     value: %i\n ",
+		//      ev[i].type,ev[i].code,ev[i].value);
+	      }
+	    break;
+	  case EV_MSC:
+	    if(ev[i].code == MSC_SERIAL)
+	      curf = ev[i].value;
+	    break;
+	  case EV_SYN:
+	    curf -= 1;
+	    if(tx >= 0)
+	      finger[curf].x = tx;
+	    if(ty >= 0)
+	      finger[curf].y = ty;
+
+	    //printf("Synched: %i tx: %i, ty: %i\n",curf,finger[curf].x,finger[curf].y);
+	    tx = -1;
+	    ty = -1;
+	    break;    
+
+	}
+
+      //Pong code
+      ball.x += ballv.x;
+      ball.y += ballv.y;
+      for(i=0;i<MAX_FINGERS;i++)
+	{
+
+	  if(finger[i].x > 0 || finger[i].y > 0)
+	    {
+	      int d2 = (finger[i].x-ball.x)*(finger[i].x-ball.x) + 
+		(finger[i].y-ball.y)*(finger[i].y-ball.y);
+	      ballv.x += (50*(ball.x-finger[i].x))/d2;
+	      ballv.y += (30*(ball.y-finger[i].y))/d2;
+	    }
+	}
+      if((unsigned int)ball.x > screen->w){
+	ball.x = screen->w/2;
+	ball.y = screen->h/2;
+	ballv.x = -3;
+	ballv.y = 1;
+      }
+      if((unsigned int)ball.y > screen->h) ballv.y *= -1;
+      printf("(%i,%i)\n",ball.x,ball.y);
+      //And draw
+      DrawScreen(screen,h);
+      /*
+      for(i=0;i<512;i++) 
+	if(keystat[i]) printf("%i\n",i);
+      printf("Buttons:%i\n",bstatus);
+      */
+    }  
+  SDL_Quit();
+  
+  return 0;
+}

touchTest/touchPong.c~

@@ -0,0 +1,243 @@
+#include <stdio.h>
+#include <SDL.h>
+#include <math.h>
+#include <linux/input.h>
+#include <fcntl.h>
+
+
+#define PI 3.1415926535897
+#define WIDTH 640
+#define HEIGHT 480
+#define BPP 4
+#define DEPTH 32
+
+
+#define MAX_FINGERS 2
+
+int mousx,mousy;
+int keystat[512];
+int bstatus;
+
+
+//Pong Code
+Point ball,ballv;
+
+typedef struct {
+  int x,y;
+} Point;
+
+Point finger[MAX_FINGERS];
+
+void handler (int sig)
+{
+  printf ("\nexiting...(%d)\n", sig);
+  exit (0);
+}
+
+void perror_exit (char *error)
+{
+  perror (error);
+  handler (9);
+}
+
+
+void setpix(SDL_Surface *screen, int x, int y, int col)
+{
+  Uint32 *pixmem32;
+  Uint32 colour;
+  
+  if((unsigned)x > screen->w) return;
+  if((unsigned)y > screen->h) return;
+
+  colour = SDL_MapRGB( screen->format, (col>>16)&0xFF, (col>>8)&0xFF, col&0xFF);
+  
+  pixmem32 = (Uint32*) screen->pixels  + y*screen->pitch/BPP + x;
+  *pixmem32 = colour;
+}
+
+void drawCircle(SDL_Surface* screen,int x,int y,int r,int c)
+{
+
+  float a;
+  for(a=0;a<2*PI;a+=1.f/(float)r)
+  {
+    setpix(screen,(int)(x+r*cos(a)),(int)(y+r*sin(a)),c);
+  }
+}
+
+void DrawScreen(SDL_Surface* screen, int h)
+{
+  int x, y, xm,ym,c;
+  if(SDL_MUSTLOCK(screen))
+    {                                              
+      if(SDL_LockSurface(screen) < 0) return;
+    }
+  for(y = 0; y < screen->h; y++ )
+    {
+      for( x = 0; x < screen->w; x++ )
+        {
+	  //setpixel(screen, x, y, (x*x)/256+3*y+h, (y*y)/256+x+h, h);
+	  //xm = (x+h)%screen->w;
+	  //ym = (y+h)%screen->w;
+	  //c = sin(h/256*2*PI)*x*y/screen->w/screen->h;
+	  //setpix(screen,x,y,255*sin(xm/screen->w*2*PI),sin(h/255*2*PI)*255*y/screen->h,c);
+	  setpix(screen,x,y,((x%255)<<16) + ((y%255)<<8) + (x+y)%255);
+        }
+    }
+  drawCircle(screen,mousx,mousy,30,0xFFFFFF);
+  int i;
+  for(i=0;i<MAX_FINGERS;i++)
+    drawCircle(screen,finger[i].x,finger[i].y,30,0xFFFFFF);
+  
+  if(SDL_MUSTLOCK(screen)) SDL_UnlockSurface(screen);
+  
+  SDL_Flip(screen);
+}
+
+SDL_Surface* initScreen(int width,int height)
+{
+  return SDL_SetVideoMode(width, height, DEPTH,
+			  SDL_HWSURFACE | SDL_RESIZABLE);
+}
+
+int main(int argc, char* argv[])
+{
+  struct input_event ev[64];
+  int fd, rd, value, size = sizeof (struct input_event);
+  char name[256] = "Unknown";
+  char *device = NULL;
+
+  
+  
+  //Setup check
+  if (argv[1] == NULL){
+    printf("Please specify (on the command line) the path to the dev event interface device\n");
+    exit (0);
+  }
+  
+  if ((getuid ()) != 0)
+    printf ("You are not root! This may not work...\n");
+  
+  if (argc > 1)
+    device = argv[1];
+  
+  //Open Device
+  if ((fd = open (device, O_RDONLY)) == -1)
+    printf ("%s is not a vaild device.\n", device);
+  
+  //Print Device Name
+  ioctl (fd, EVIOCGNAME (sizeof (name)), name);
+  printf ("Reading From : %s (%s)\n", device, name);
+  
+  
+  
+  
+  
+  SDL_Surface *screen;
+  SDL_Event event;
+  
+  int keypress = 0;
+  int h=0,s=1,i,j;
+  int tx,ty,curf=0;
+
+
+
+  memset(keystat,0,512*sizeof(keystat[0]));
+  if (SDL_Init(SDL_INIT_VIDEO) < 0 ) return 1;
+  
+  if (!(screen = initScreen(WIDTH,HEIGHT)))
+    {
+      SDL_Quit();
+      return 1;
+    }
+  ball.x = screen->width()/2;
+  ball.y = screen->height()/2;
+  while(!keystat[27]) 
+    {
+      //Poll SDL
+      while(SDL_PollEvent(&event)) 
+	{
+	  switch (event.type) 
+	    {
+	    case SDL_QUIT:
+	      keystat[27] = 1;
+	      break;
+	    case SDL_KEYDOWN:
+	      //printf("%i\n",event.key.keysym.sym);
+	      keystat[event.key.keysym.sym] = 1;
+	      //keypress = 1;
+	      break;
+	    case SDL_KEYUP:
+	      //printf("%i\n",event.key.keysym.sym);
+	      keystat[event.key.keysym.sym] = 0;
+	      //keypress = 1;
+	      break;
+	    case SDL_VIDEORESIZE:
+	      if (!(screen = initScreen(event.resize.w,
+					event.resize.h)))
+	      {
+		SDL_Quit();
+		return 1;
+	      }
+	      break;
+	    case SDL_MOUSEMOTION:
+	      mousx = event.motion.x;
+	      mousy = event.motion.y; 
+	      break;
+	    case SDL_MOUSEBUTTONDOWN:
+	      bstatus |=  (1<<(event.button.button-1));
+	      break;
+	    case SDL_MOUSEBUTTONUP:
+	      bstatus &= ~(1<<(event.button.button-1));
+	      break;
+	    }
+	}
+
+      //poll for Touch <- Goal: make this a case:      
+      if ((rd = read (fd, ev, size * 64)) < size)
+	perror_exit ("read()");          
+      //printf("time: %i\n type: %X\n code: %X\n value: %i\n ",
+      //     ev->time,ev->type,ev->code,ev->value);
+      for (i = 0; i < rd / sizeof(struct input_event); i++)
+	switch (ev[i].type)	
+	  {
+	  case EV_ABS:
+	    if(ev[i].code == ABS_X)
+	      tx = ev[i].value;
+	    else if (ev[i].code == ABS_Y)
+	      ty = ev[i].value;
+	    else if (ev[i].code == ABS_MISC)
+	      {	     
+		//printf("Misc:type: %X\n     code: %X\n     value: %i\n ",
+		//      ev[i].type,ev[i].code,ev[i].value);
+	      }
+	    break;
+	  case EV_MSC:
+	    if(ev[i].code == MSC_SERIAL)
+	      curf = ev[i].value;
+	    break;
+	  case EV_SYN:
+	    curf -= 1;
+	    if(tx >= 0)
+	      finger[curf].x = tx;
+	    if(ty >= 0)
+	      finger[curf].y = ty;
+
+	    //printf("Synched: %i tx: %i, ty: %i\n",curf,finger[curf].x,finger[curf].y);
+	    tx = -1;
+	    ty = -1;
+	    break;    
+
+	}
+      //And draw
+      DrawScreen(screen,h);
+      /*
+      for(i=0;i<512;i++) 
+	if(keystat[i]) printf("%i\n",i);
+      printf("Buttons:%i\n",bstatus);
+      */
+    }  
+  SDL_Quit();
+  
+  return 0;
+}

touchTest/touchSimp.c

@@ -0,0 +1,238 @@
+#include <stdio.h>
+#include <SDL.h>
+#include <math.h>
+#include <linux/input.h>
+#include <fcntl.h>
+
+
+#define PI 3.1415926535897
+#define WIDTH 640
+#define HEIGHT 480
+#define BPP 4
+#define DEPTH 32
+
+
+#define MAX_FINGERS 2
+
+int mousx,mousy;
+int keystat[512];
+int bstatus;
+
+
+
+typedef struct {
+  int x,y;
+} Point;
+
+Point finger[MAX_FINGERS];
+
+void handler (int sig)
+{
+  printf ("\nexiting...(%d)\n", sig);
+  exit (0);
+}
+
+void perror_exit (char *error)
+{
+  perror (error);
+  handler (9);
+}
+
+
+void setpix(SDL_Surface *screen, int x, int y, int col)
+{
+  Uint32 *pixmem32;
+  Uint32 colour;
+  
+  if((unsigned)x > screen->w) return;
+  if((unsigned)y > screen->h) return;
+
+  colour = SDL_MapRGB( screen->format, (col>>16)&0xFF, (col>>8)&0xFF, col&0xFF);
+  
+  pixmem32 = (Uint32*) screen->pixels  + y*screen->pitch/BPP + x;
+  *pixmem32 = colour;
+}
+
+void drawCircle(SDL_Surface* screen,int x,int y,int r,int c)
+{
+
+  float a;
+  for(a=0;a<2*PI;a+=1.f/(float)r)
+  {
+    setpix(screen,(int)(x+r*cos(a)),(int)(y+r*sin(a)),c);
+  }
+}
+
+void DrawScreen(SDL_Surface* screen, int h)
+{
+  int x, y, xm,ym,c;
+  if(SDL_MUSTLOCK(screen))
+    {                                              
+      if(SDL_LockSurface(screen) < 0) return;
+    }
+  for(y = 0; y < screen->h; y++ )
+    {
+      for( x = 0; x < screen->w; x++ )
+        {
+	  //setpixel(screen, x, y, (x*x)/256+3*y+h, (y*y)/256+x+h, h);
+	  //xm = (x+h)%screen->w;
+	  //ym = (y+h)%screen->w;
+	  //c = sin(h/256*2*PI)*x*y/screen->w/screen->h;
+	  //setpix(screen,x,y,255*sin(xm/screen->w*2*PI),sin(h/255*2*PI)*255*y/screen->h,c);
+	  setpix(screen,x,y,((x%255)<<16) + ((y%255)<<8) + (x+y)%255);
+        }
+    }
+  drawCircle(screen,mousx,mousy,30,0xFFFFFF);
+  int i;
+  for(i=0;i<MAX_FINGERS;i++)
+    drawCircle(screen,finger[i].x,finger[i].y,30,0xFFFFFF);
+  
+  if(SDL_MUSTLOCK(screen)) SDL_UnlockSurface(screen);
+  
+  SDL_Flip(screen);
+}
+
+SDL_Surface* initScreen(int width,int height)
+{
+  return SDL_SetVideoMode(width, height, DEPTH,
+			  SDL_HWSURFACE | SDL_RESIZABLE);
+}
+
+int main(int argc, char* argv[])
+{
+  struct input_event ev[64];
+  int fd, rd, value, size = sizeof (struct input_event);
+  char name[256] = "Unknown";
+  char *device = NULL;
+
+  
+  
+  //Setup check
+  if (argv[1] == NULL){
+    printf("Please specify (on the command line) the path to the dev event interface device\n");
+    exit (0);
+  }
+  
+  if ((getuid ()) != 0)
+    printf ("You are not root! This may not work...\n");
+  
+  if (argc > 1)
+    device = argv[1];
+  
+  //Open Device
+  if ((fd = open (device, O_RDONLY)) == -1)
+    printf ("%s is not a vaild device.\n", device);
+  
+  //Print Device Name
+  ioctl (fd, EVIOCGNAME (sizeof (name)), name);
+  printf ("Reading From : %s (%s)\n", device, name);
+  
+  
+  
+  
+  
+  SDL_Surface *screen;
+  SDL_Event event;
+  
+  int keypress = 0;
+  int h=0,s=1,i,j;
+  int tx,ty,curf=0;
+
+  memset(keystat,0,512*sizeof(keystat[0]));
+  if (SDL_Init(SDL_INIT_VIDEO) < 0 ) return 1;
+  
+  if (!(screen = initScreen(WIDTH,HEIGHT)))
+    {
+      SDL_Quit();
+      return 1;
+    }
+
+  while(!keystat[27]) 
+    {
+      //Poll SDL
+      while(SDL_PollEvent(&event)) 
+	{
+	  switch (event.type) 
+	    {
+	    case SDL_QUIT:
+	      keystat[27] = 1;
+	      break;
+	    case SDL_KEYDOWN:
+	      //printf("%i\n",event.key.keysym.sym);
+	      keystat[event.key.keysym.sym] = 1;
+	      //keypress = 1;
+	      break;
+	    case SDL_KEYUP:
+	      //printf("%i\n",event.key.keysym.sym);
+	      keystat[event.key.keysym.sym] = 0;
+	      //keypress = 1;
+	      break;
+	    case SDL_VIDEORESIZE:
+	      if (!(screen = initScreen(event.resize.w,
+					event.resize.h)))
+	      {
+		SDL_Quit();
+		return 1;
+	      }
+	      break;
+	    case SDL_MOUSEMOTION:
+	      mousx = event.motion.x;
+	      mousy = event.motion.y; 
+	      break;
+	    case SDL_MOUSEBUTTONDOWN:
+	      bstatus |=  (1<<(event.button.button-1));
+	      break;
+	    case SDL_MOUSEBUTTONUP:
+	      bstatus &= ~(1<<(event.button.button-1));
+	      break;
+	    }
+	}
+
+      //poll for Touch <- Goal: make this a case:      
+      if ((rd = read (fd, ev, size * 64)) < size)
+	perror_exit ("read()");          
+      //printf("time: %i\n type: %X\n code: %X\n value: %i\n ",
+      //     ev->time,ev->type,ev->code,ev->value);
+      for (i = 0; i < rd / sizeof(struct input_event); i++)
+	switch (ev[i].type)	
+	  {
+	  case EV_ABS:
+	    if(ev[i].code == ABS_X)
+	      tx = ev[i].value;
+	    else if (ev[i].code == ABS_Y)
+	      ty = ev[i].value;
+	    else if (ev[i].code == ABS_MISC)
+	      {	     
+		//printf("Misc:type: %X\n     code: %X\n     value: %i\n ",
+		//      ev[i].type,ev[i].code,ev[i].value);
+	      }
+	    break;
+	  case EV_MSC:
+	    if(ev[i].code == MSC_SERIAL)
+	      curf = ev[i].value;
+	    break;
+	  case EV_SYN:
+	    curf -= 1;
+	    if(tx >= 0)
+	      finger[curf].x = tx;
+	    if(ty >= 0)
+	      finger[curf].y = ty;
+
+	    //printf("Synched: %i tx: %i, ty: %i\n",curf,finger[curf].x,finger[curf].y);
+	    tx = -1;
+	    ty = -1;
+	    break;    
+
+	}
+      //And draw
+      DrawScreen(screen,h);
+      /*
+      for(i=0;i<512;i++) 
+	if(keystat[i]) printf("%i\n",i);
+      printf("Buttons:%i\n",bstatus);
+      */
+    }  
+  SDL_Quit();
+  
+  return 0;
+}

touchTest/touchSimp.c~

@@ -0,0 +1,241 @@
+#include <stdio.h>
+#include <SDL.h>
+#include <math.h>
+#include <linux/input.h>
+#include <fcntl.h>
+
+
+#define PI 3.1415926535897
+#define WIDTH 640
+#define HEIGHT 480
+#define BPP 4
+#define DEPTH 32
+
+
+#define MAX_FINGERS 2
+
+int mousx,mousy;
+int keystat[512];
+int bstatus;
+
+
+
+typedef struct {
+  int x,y;
+} Point;
+
+Point finger[MAX_FINGERS];
+
+void handler (int sig)
+{
+  printf ("\nexiting...(%d)\n", sig);
+  exit (0);
+}
+
+void perror_exit (char *error)
+{
+  perror (error);
+  handler (9);
+}
+
+
+void setpix(SDL_Surface *screen, int x, int y, int col)
+{
+  Uint32 *pixmem32;
+  Uint32 colour;
+  
+  if((unsigned)x > screen->w) return;
+  if((unsigned)y > screen->h) return;
+
+  colour = SDL_MapRGB( screen->format, (col>>16)&0xFF, (col>>8)&0xFF, col&0xFF);
+  
+  pixmem32 = (Uint32*) screen->pixels  + y*screen->pitch/BPP + x;
+  *pixmem32 = colour;
+}
+
+void drawCircle(SDL_Surface* screen,int x,int y,int r,int c)
+{
+
+  float a;
+  for(a=0;a<2*PI;a+=1.f/(float)r)
+  {
+    setpix(screen,(int)(x+r*cos(a)),(int)(y+r*sin(a)),c);
+  }
+}
+
+void DrawScreen(SDL_Surface* screen, int h)
+{
+  int x, y, xm,ym,c;
+  if(SDL_MUSTLOCK(screen))
+    {                                              
+      if(SDL_LockSurface(screen) < 0) return;
+    }
+  for(y = 0; y < screen->h; y++ )
+    {
+      for( x = 0; x < screen->w; x++ )
+        {
+	  //setpixel(screen, x, y, (x*x)/256+3*y+h, (y*y)/256+x+h, h);
+	  //xm = (x+h)%screen->w;
+	  //ym = (y+h)%screen->w;
+	  //c = sin(h/256*2*PI)*x*y/screen->w/screen->h;
+	  //setpix(screen,x,y,255*sin(xm/screen->w*2*PI),sin(h/255*2*PI)*255*y/screen->h,c);
+	  setpix(screen,x,y,((x%255)<<16) + ((y%255)<<8) + (x+y)%255);
+        }
+    }
+  drawCircle(screen,mousx,mousy,30,0xFFFFFF);
+  int i;
+  for(i=0;i<MAX_FINGERS;i++)
+    drawCircle(screen,finger[i].x,finger[i].y,30,0xFFFFFF);
+  
+  if(SDL_MUSTLOCK(screen)) SDL_UnlockSurface(screen);
+  
+  SDL_Flip(screen);
+}
+
+SDL_Surface* initScreen(int width,int height)
+{
+  return SDL_SetVideoMode(width, height, DEPTH,
+			  SDL_HWSURFACE | SDL_RESIZABLE);
+}
+
+int main(int argc, char* argv[])
+{
+  struct input_event ev[64];
+  int fd, rd, value, size = sizeof (struct input_event);
+  char name[256] = "Unknown";
+  char *device = NULL;
+
+  
+  
+  //Setup check
+  if (argv[1] == NULL){
+    printf("Please specify (on the command line) the path to the dev event interface device\n");
+    exit (0);
+  }
+  
+  if ((getuid ()) != 0)
+    printf ("You are not root! This may not work...\n");
+  
+  if (argc > 1)
+    device = argv[1];
+  
+  //Open Device
+  if ((fd = open (device, O_RDONLY)) == -1)
+    printf ("%s is not a vaild device.\n", device);
+  
+  //Print Device Name
+  ioctl (fd, EVIOCGNAME (sizeof (name)), name);
+  printf ("Reading From : %s (%s)\n", device, name);
+  
+  
+  
+  
+  
+  SDL_Surface *screen;
+  SDL_Event event;
+  
+  int keypress = 0;
+  int h=0,s=1,i,j;
+  int tx,ty,curf=0;
+
+  Point ball,ballv;
+
+  memset(keystat,0,512*sizeof(keystat[0]));
+  if (SDL_Init(SDL_INIT_VIDEO) < 0 ) return 1;
+  
+  if (!(screen = initScreen(WIDTH,HEIGHT)))
+    {
+      SDL_Quit();
+      return 1;
+    }
+  ball.x = screen->width()/2;
+  ball.y = screen->height()/2;
+  while(!keystat[27]) 
+    {
+      //Poll SDL
+      while(SDL_PollEvent(&event)) 
+	{
+	  switch (event.type) 
+	    {
+	    case SDL_QUIT:
+	      keystat[27] = 1;
+	      break;
+	    case SDL_KEYDOWN:
+	      //printf("%i\n",event.key.keysym.sym);
+	      keystat[event.key.keysym.sym] = 1;
+	      //keypress = 1;
+	      break;
+	    case SDL_KEYUP:
+	      //printf("%i\n",event.key.keysym.sym);
+	      keystat[event.key.keysym.sym] = 0;
+	      //keypress = 1;
+	      break;
+	    case SDL_VIDEORESIZE:
+	      if (!(screen = initScreen(event.resize.w,
+					event.resize.h)))
+	      {
+		SDL_Quit();
+		return 1;
+	      }
+	      break;
+	    case SDL_MOUSEMOTION:
+	      mousx = event.motion.x;
+	      mousy = event.motion.y; 
+	      break;
+	    case SDL_MOUSEBUTTONDOWN:
+	      bstatus |=  (1<<(event.button.button-1));
+	      break;
+	    case SDL_MOUSEBUTTONUP:
+	      bstatus &= ~(1<<(event.button.button-1));
+	      break;
+	    }
+	}
+
+      //poll for Touch <- Goal: make this a case:      
+      if ((rd = read (fd, ev, size * 64)) < size)
+	perror_exit ("read()");          
+      //printf("time: %i\n type: %X\n code: %X\n value: %i\n ",
+      //     ev->time,ev->type,ev->code,ev->value);
+      for (i = 0; i < rd / sizeof(struct input_event); i++)
+	switch (ev[i].type)	
+	  {
+	  case EV_ABS:
+	    if(ev[i].code == ABS_X)
+	      tx = ev[i].value;
+	    else if (ev[i].code == ABS_Y)
+	      ty = ev[i].value;
+	    else if (ev[i].code == ABS_MISC)
+	      {	     
+		//printf("Misc:type: %X\n     code: %X\n     value: %i\n ",
+		//      ev[i].type,ev[i].code,ev[i].value);
+	      }
+	    break;
+	  case EV_MSC:
+	    if(ev[i].code == MSC_SERIAL)
+	      curf = ev[i].value;
+	    break;
+	  case EV_SYN:
+	    curf -= 1;
+	    if(tx >= 0)
+	      finger[curf].x = tx;
+	    if(ty >= 0)
+	      finger[curf].y = ty;
+
+	    //printf("Synched: %i tx: %i, ty: %i\n",curf,finger[curf].x,finger[curf].y);
+	    tx = -1;
+	    ty = -1;
+	    break;    
+
+	}
+      //And draw
+      DrawScreen(screen,h);
+      /*
+      for(i=0;i<512;i++) 
+	if(keystat[i]) printf("%i\n",i);
+      printf("Buttons:%i\n",bstatus);
+      */
+    }  
+  SDL_Quit();
+  
+  return 0;
+}