3state toggle (swipe, swipetouch, disable)

swipe enabled by default
calculate swipe velocity (ignore slow swipes)

config.h

@@ -12,5 +12,6 @@
 #define WACOM "/dev/input/event0"
 
 #define MAX_SLOTS 7  //max touch points to track
-#define TWOTAP_DISTANCE 700 //distance between the fingers to enable disable
-#define JITTER 20 //finger displacement to be consideded a swipe
+#define TWOTAP_DISTANCE 900 //distance between the fingers to enable disable
+#define JITTER 10 //finger displacement to be consideded a swipe
+#define SWIPE_VELOCITY 4 //swipe speed threshold

eventreader.c

@@ -1,4 +1,5 @@
 #include <stdio.h>
+#include <time.h>
 #include <stdlib.h>
 #include <memory.h>
 #include <unistd.h>
@@ -91,8 +92,10 @@ void process_touch(void(*process)(struct TouchEvent *)){
                 f = &fingers[i];
                 if (f->status) {
 
+					struct timespec tv;
+					clock_gettime(CLOCK_MONOTONIC, &tv);
                     struct TouchEvent event;
-                    event.time = evt.time.tv_sec;
+                    event.time = tv.tv_sec*1000+ tv.tv_nsec /1000000;
                     event.slot = i; //enumerating slots
                     event.x = f->x;
                     event.y = f->y;

eventreader.h

@@ -8,7 +8,7 @@ struct TouchEvent{
 	struct Point position;
 	struct Point raw_position;
 
-    long time;
+    unsigned long time;
     enum FingerStatus status;
 };
 

gestures.c

@@ -27,6 +27,7 @@ void recognize_gestures(struct TouchEvent *f) {
         if(keys_down < 0) keys_down = 0; //todo: fixit
         segments[slot].start.x = f->x;
         segments[slot].start.y = f->y;
+        segments[slot].start.time = f->time;
 
         keys_down++;
         segment_count++;
@@ -39,31 +40,35 @@ void recognize_gestures(struct TouchEvent *f) {
         keys_down--;
         segments[slot].end.x = x;
         segments[slot].end.y = y;
+        segments[slot].end.time = f->time;
 
         //todo: extract gesture recognition
 
         if(keys_down == 0){
             struct Gesture gesture;
             struct Segment *p = segments;
             int dx,dy,distance=0;
+			unsigned long dt;
             switch(segment_count){
+
                 //single tap
                 case 1: 
                     printf("Tap  x:%d, y:%d  raw_x:%d, raw_y:%d\n", f->x, f->y, f->raw_position.x, f->raw_position.y);
                     dx = p->end.x - p->start.x;
                     dy = p->end.y - p->start.y;
+					dt = p->end.time - p->start.time;
+					printf("delta dt %lu\n", dt);
+					distance = (int)sqrt(dx*dx+dy*dy);
 
-                    if (abs(dx) < JITTER &&
-                            abs(dy) < JITTER){
+                    if (distance < JITTER) {
 
                         int nav_stripe = SCREEN_WIDTH /3;
-                        if (y > 100){//disable upper stripe 
+                        if (y > 100 && x > 100){//disable upper stripe and left menus
                             if (x < nav_stripe) { 
                                 if (y > SCREEN_HEIGHT - 150 && x < 150) {
                                     printf("TOC\n");
                                 }
                                 else {
-
                                     gesture.type = TapLeft; 
                                     interpret_gesture(&gesture);
                                 }
@@ -75,14 +80,17 @@ void recognize_gestures(struct TouchEvent *f) {
                         }
                     }
                     else {
+						unsigned int velo = (10*distance) / (dt == 0 ? 1 : dt);
+						printf("velocity %d\n", velo);
+						if (velo < SWIPE_VELOCITY) //ignore slow swipes
+							break;
                         //swipe 
                         if (abs(dx) > abs(dy)) {
                             //horizontal
                             if (dx < 0) {
                                 printf("swipe left\n");
-                                //todo: output gestures, extract executer
-                                    gesture.type = SwipeLeft; 
-                                    interpret_gesture(&gesture);
+								gesture.type = SwipeLeft; 
+								interpret_gesture(&gesture);
                             }
                             else {
                                 printf("swipe right\n");

keyinjector.c

@@ -12,8 +12,8 @@
 #include "config.h"
 
 enum Key {Left=105, Right=106, Home=102,Power=116};
-
-static bool touch_enabled = false;
+enum TouchStatus {SwipeOnly, SwipeAndTouch,Disabled};
+static enum TouchStatus touch_status = SwipeOnly;
 int f;
 int w;
 void injector_init() {
@@ -37,18 +37,18 @@ void move_pen(int x, int y, long time);
 
 void interpret_gesture(struct Gesture *g){
     if (g->type == TwoTapWide) {
-        if (touch_enabled){
-            show("touch navigation disabled");
-            if (verbose)
-                printf("disabling\n");
-            touch_enabled = false;
-        }
-        else {
-            show("touch navigation enabled");
-            if(verbose)
-                printf("enabling\n");
-            touch_enabled = true;
-        }
+		touch_status = ((int)touch_status + 1) % 3; //cycle the states
+		switch(touch_status) {
+			case SwipeOnly:
+				show("swipe only");
+				break;
+			case Disabled:
+				show("touch disabled");
+				break;
+			case SwipeAndTouch:
+				show("swipe and touch");
+				break;
+		}
 		return;
     }
 
@@ -69,16 +69,22 @@ void interpret_gesture(struct Gesture *g){
 
     }
 
-    if (!touch_enabled)
+    if (touch_status == Disabled)
         return;
 
     //require touch enabled
     switch(g->type){
         case TapLeft:
+			if(touch_status != SwipeAndTouch)
+				break;
+			// fall through
         case SwipeRight:
             press_button(Left);
             break;
         case TapRight:
+			if(touch_status != SwipeAndTouch)
+				break;
+			// fall through
         case SwipeLeft:
             press_button(Right);
             break;

point.h

@@ -1,4 +1,5 @@
 #pragma once
 struct Point {
     int x,y;
+	int time;
 };

test.sh

@@ -6,6 +6,6 @@ fi
 
 make  || exit 1
 ssh $DEVICE killall touchinjector
-arm-poky-linux-gnueabi-strip bin/touchinjector
+arm-oe-linux-gnueabi-strip bin/touchinjector
 scp bin/touchinjector $DEVICE:~/ && 
 ssh -tt $DEVICE '/home/root/touchinjector'

version.h

@@ -1 +1 @@
-#define VERSION "0.0.2-19-g55385c9"
+#define VERSION "0.0.3-9-g847192c"