Android Open Source - Save-the-Planet Tap Detector

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License

The source code is released under:

Copyright (c) 2002 JSON.org Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software ...

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Java Source Code

package com.karolmajta.procprox;
/*from   ww w  .  ja  va2  s . c o  m*/
import java.util.ArrayList;

public class TapDetector {
  private ArrayList<Tap> taps;
  private ArrayList<IEventFilter<Tap>> filters;
  private boolean mousePressed;
  private float startX;
  private float startY;
  private float lastX;
  private float lastY;
  private int duration;
  
  public TapDetector() {
    taps = new ArrayList<Tap>();
    filters = new ArrayList<IEventFilter<Tap>>();
    mousePressed = false;
    duration = 0;
  }
  
  public ArrayList<Tap> getTaps() {
    return taps;
  }
  
  public boolean hasTaps() {
    if(taps.size() > 0){
      return true;
    }else{
      return false;
    }
  }
  
  public void update
      (
          float mouseX,
          float mouseY,
          boolean mousePressed,
          int milis
      ) {
    if(!this.mousePressed && mousePressed){
      this.mousePressed = true;
      startX = mouseX;
      startY = mouseY;
      duration = 0;
    }
    if(mousePressed){
      lastX = mouseX;
      lastY = mouseY;
      duration += milis;
    }
    if(this.mousePressed && !mousePressed){
      this.mousePressed = false;
      Tap t = new Tap
          (
              startX,
              startY,
              lastX,
              lastY,
              duration
          );
      boolean shouldAdd = true;
      for(IEventFilter<Tap> f : filters){
        if(f.filter(t)){
          shouldAdd = false;
          break;
        }
      }
      if(shouldAdd){
        taps.add(t);
      }
    }
  }

  public void flush() {
    taps = new ArrayList<Tap>();
  }
  
  public void addFilter(IEventFilter<Tap> filter) {
    filters.add(filter);
  }
}

Java Source Code List