Android Open Source - DiceInDark Gesture Handler

• Back to Development/speech  ↑

From Project

Back to project page DiceInDark.

License

The source code is released under:

GNU General Public License

Java Source Code

/*    Dice in the dark. D & D app for the blind and seeing impaired,
*    Copyright (C) <2013r>  <Lovisa Irpa Helgadottir>
*//from   w  ww  .j  a v  a 2  s .c o m
*    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 3 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, see <http://www.gnu.org/licenses/>.
*/
package com.plovergames.framework.impl;


import java.util.ArrayList;
import java.util.List;

import com.plovergames.framework.Input.GestureEvent;
import com.plovergames.framework.Input.TouchEvent;
import com.plovergames.framework.Pool.PoolObjectFactory;
import com.plovergames.framework.Pool;


import android.content.Context;
import android.util.Log;
import android.view.GestureDetector;
import android.view.MotionEvent;
import android.view.View;
import android.view.GestureDetector.OnDoubleTapListener;
import android.view.GestureDetector.OnGestureListener;

public class GestureHandler implements TouchHandler{
   private static final int MAX_TOUCHPOINTS = 10;
    
      boolean[] isTouched = new boolean[MAX_TOUCHPOINTS];
      int[] touchX = new int[MAX_TOUCHPOINTS];
      int[] touchY = new int[MAX_TOUCHPOINTS];
      int[] id = new int[MAX_TOUCHPOINTS];
      
    private GestureDetector gestures;
    Pool<GestureEvent> gestureEventPool;
    List<GestureEvent> gestureEvents = new ArrayList<GestureEvent>();
    List<GestureEvent> gestureEventsBuffer = new ArrayList<GestureEvent>();

      

      
      public GestureHandler(Context context, View view) {

          
          PoolObjectFactory<GestureEvent> factory1 = new PoolObjectFactory<GestureEvent>() {
              public GestureEvent createObject() {
                  return new GestureEvent();
              }
          };
          gestureEventPool = new Pool<GestureEvent>(factory1, 100);
          gestures = new GestureDetector(context, new GestureListener(this));
          
          view.setOnTouchListener(this);

      }

      public boolean onTouch(View v, MotionEvent event) {
          synchronized (this) {
            gestures.onTouchEvent(event);
              return true;
          }
      }

      public boolean isTouchDown(int pointer) {
          synchronized (this) {
              int index = getIndex(pointer);
              if (index < 0 || index >= MAX_TOUCHPOINTS)
                  return false;
              else
                  return isTouched[index];
          }
      }

      public int getTouchX(int pointer) {
          synchronized (this) {
              int index = getIndex(pointer);
              if (index < 0 || index >= MAX_TOUCHPOINTS)
                  return 0;
              else
                  return touchX[index];
          }
      }

      public int getTouchY(int pointer) {
          synchronized (this) {
              int index = getIndex(pointer);
              if (index < 0 || index >= MAX_TOUCHPOINTS)
                  return 0;
              else
                  return touchY[index];
          }
      }

      public List<TouchEvent> getTouchEvents() {
        return null;
      }
      public List<GestureEvent> getGestureEvents() {
          synchronized (this) {
              int len = gestureEvents.size();
              for (int i = 0; i < len; i++)
                  gestureEventPool.free(gestureEvents.get(i));
              gestureEvents.clear();
              gestureEvents.addAll(gestureEventsBuffer);
              gestureEventsBuffer.clear();
              return gestureEvents;
          }
      }
      
      // returns the index for a given pointerId or -1 if no index.
      private int getIndex(int pointerId) {
          for (int i = 0; i < MAX_TOUCHPOINTS; i++) {
              if (id[i] == pointerId) {
                  return i;
              }
          }
          return -1;
      }
  }
  class GestureListener implements OnGestureListener, OnDoubleTapListener {
      private static final String DEBUG_TAG = "GestureListener";
    GestureHandler handler; 
    
    public GestureListener(GestureHandler handler){
      this.handler = handler;
    }
     @Override
       public boolean onDown(MotionEvent e) {
           Log.v(DEBUG_TAG, "onDown");
           return true;
       }

       @Override
       public boolean onFling(MotionEvent e1, MotionEvent e2,
               final float velocityX, final float velocityY) {
           Log.v(DEBUG_TAG, "onFling");
         GestureEvent event;
         event = handler.gestureEventPool.newObject();
         float diffX =e1.getRawX()-e2.getRawX();
         float diffY =e1.getRawY()-e2.getRawY();
         if(Math.abs(diffX)>Math.abs(diffY)){
         if(diffX<0)
           event.type= GestureEvent.FLING_RIGHT;
         else 
           event.type = GestureEvent.FLING_LEFT;
         
        
         }else{
           if(diffY<0)
             event.type=GestureEvent.SCROLL_UP;
           else
             event.type = GestureEvent.SCROLL_DOWN;
               
         }
         handler.gestureEventsBuffer.add(event);   
         

           
           return true;
       }

       @Override
       public boolean onDoubleTap(MotionEvent e) {
           Log.v(DEBUG_TAG, "onDoubleTap");
           GestureEvent event;
         event = handler.gestureEventPool.newObject();
         event.type = GestureEvent.DOUBLE_TAP;
         handler.gestureEventsBuffer.add(event);
           return true;
       }

       @Override
       public void onLongPress(MotionEvent e) {
           Log.v(DEBUG_TAG, "onLongPress");
       }

       @Override
       public boolean onScroll(MotionEvent e1, MotionEvent e2,
               float distanceX, float distanceY) {
           Log.v(DEBUG_TAG, "onScroll");
/*         GestureEvent event;
         event = handler.gestureEventPool.newObject();
         float diff =e1.getRawY()-e2.getRawY();
         if(Math.abs(diff)>Math.abs(e1.getRawX()-e2.getRawX())){
           if(diff<0)
             event.type= GestureEvent.SCROLL_UP;
           else 
             event.type = GestureEvent.SCROLL_DOWN;
           handler.gestureEventsBuffer.add(event);
         }*/
           return false;
       }

       @Override
       public void onShowPress(MotionEvent e) {
           Log.v(DEBUG_TAG, "onShowPress");
       }

       @Override
       public boolean onSingleTapUp(MotionEvent e) {
           Log.v(DEBUG_TAG, "onSingleTapUp");
           GestureEvent event;
         event = handler.gestureEventPool.newObject();
         event.type = GestureEvent.SINGLE_TAP;
         handler.gestureEventsBuffer.add(event);
           return true;
       }

       @Override
       public boolean onDoubleTapEvent(MotionEvent e) {
           Log.v(DEBUG_TAG, "onDoubleTapEvent");
           return false;
       }

       @Override
       public boolean onSingleTapConfirmed(MotionEvent e) {
           Log.v(DEBUG_TAG, "onSingleTapConfirmed");
           return false;
       }

   }

Java Source Code List

• Back to Development/speech  ↑