Android Open Source - BoxSorter Box Canvas View

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License

The source code is released under:

GNU General Public License

Java Source Code

package com.silverhillapps.boxsorter.views;
//from  w w w. j a  v a  2s.  co  m
import java.util.ArrayList;
import java.util.List;
import com.silverhillapps.boxsorter.R;
import com.silverhillapps.boxsorter.conf.Conf;
import com.silverhillapps.boxsorter.conf.Constants;
import com.silverhillapps.boxsorter.entities.Element;
import com.silverhillapps.boxsorter.entities.InitialPositionConfig;
import com.silverhillapps.boxsorter.subviews.Circle;
import com.silverhillapps.boxsorter.subviews.Figure;
import com.silverhillapps.boxsorter.subviews.FigureFactory;
import android.animation.Animator;
import android.animation.AnimatorListenerAdapter;
import android.animation.AnimatorSet;
import android.animation.ObjectAnimator;
import android.content.Context;
import android.content.res.TypedArray;
import android.util.AttributeSet;
import android.util.Log;
import android.view.ViewGroup;

/**
 * This class is the canvas of the application
 * @author salva
 *
 */
public class BoxCanvasView extends ViewGroup {

  private int sourceElements; //This variable is taken from the layout and determines the source for the loader
  private Context mContext;

  private List<Figure> mFigures; //The figures displayed in the canvas
  private FigureFactory mFf; // This factory should be injected instead of manually created
  private Figure mCircle; //The suck in figure
  
  
  public BoxCanvasView(Context context, AttributeSet attrs, int defStyleAttr) {
    super(context, attrs, defStyleAttr);
    this.mContext = context;
    this.mFf = new FigureFactory(context);
    this.mFigures = new ArrayList<Figure>();
    init(attrs);

  }

  public BoxCanvasView(Context context, AttributeSet attrs) {
    super(context, attrs);
    this.mContext = context;
    this.mFf = new FigureFactory(context);
    this.mFigures = new ArrayList<>();
    init(attrs);
  }

  /**
   * Method for adding the initial elements into the canvas
   * @param positions these are the initial elements
   */
  public void addInitialValues(InitialPositionConfig positions){

    //Create the suck in figure
    mCircle = mFf.createFigure(Constants.CIRCLE_CODE); 
    this.addView(mCircle.getView());
    this.invalidate();
    mCircle.getView().invalidate();
    
    //We create the rest of the initial elements
    placeInitialElements(positions);
  }

/*
 * This method is responsible of creating the initial elements from the loaded structure created with the loader
 */
  private void placeInitialElements(InitialPositionConfig positions) {
    Element l = null;
    for(int i = 0; i<positions.getSize();i++){
      l = positions.getElements().get(i);

      Figure f = mFf.createFigure(l.getFigureCode());
      f.setDimension(l.getSize());
      f.setColor(l.getColour());
      f.setPosition(l.getxPos(), l.getyPos());

      mFigures.add(f);
      this.addView(f.getView());
    }

  }  


  /**
   * This method displays a new element
   * @param l the new Element
   */
  public void addNewElement(Element l){

    Figure f = mFf.createFigure(l.getFigureCode());
    f.setDimension(l.getSize());
    f.setPosition(l.getxPos(), l.getyPos());
    f.setColor(l.getColour());
    mFigures.add(f);
    
    this.addView(f.getView());
    invalidate();
  }

/*
 * This method extracts the parameter of the origin of the loader from the layout
 */
  private void init(AttributeSet attrs) { 
    TypedArray a=getContext().obtainStyledAttributes(
        attrs,
        R.styleable.BoxCanvasView);

    Log.i("test","Origin: " + a.getInt(R.styleable.BoxCanvasView_origin, 0));
    this.sourceElements = a.getInt(R.styleable.BoxCanvasView_origin, 0);
    a.recycle();
  }

  /**
   * This method generates the layout for all the figures in the canvas
   */
  @Override
  protected void onLayout(boolean changed, int l, int t, int r, int b) {
    
    for(int i=0; i< this.getChildCount(); i++){
      Figure v  = (Figure)getChildAt(i);

      v.getView().layout(v.getLeftPosition(), v.getTopPosition(), v.getLeftPosition()+v.getSize(), v.getTopPosition()+v.getSize()); 
    }

  }

  /**
   * This method removes an element from the canvas
   * @param f the figure to be removed
   */
  public void removeElement(final Figure f){

    long timeTranslate = Conf.PRIMARY_ANIMATION_TIME;
    long timeSuckIn = Conf.SECONDARY_ANIMATION_TIME;

    ObjectAnimator translateX = ObjectAnimator.ofFloat(f, "translationX",Conf.CIRCLE_CENTER_X_POS-(f.getLeftPosition()+(f.getSize()/2)));
    translateX.setDuration(timeTranslate);
    ObjectAnimator translateY = ObjectAnimator.ofFloat(f, "translationY",Conf.CIRCLE_CENTER_Y_POS-(f.getTopPosition()+(f.getSize()/2)));
    translateY.setDuration(timeTranslate);
    ObjectAnimator fadeOut = ObjectAnimator.ofFloat(f, "alpha", 0f);
    fadeOut.setDuration(timeSuckIn);
    fadeOut.setStartDelay(timeTranslate);

    ObjectAnimator scaleDownX = ObjectAnimator.ofFloat(f, "scaleX", 0f);
    ObjectAnimator scaleDownY = ObjectAnimator.ofFloat(f, "scaleY", 0f);

    scaleDownX.setStartDelay(timeTranslate);
    scaleDownY.setStartDelay(timeTranslate);
    scaleDownX.setDuration(timeSuckIn);
    scaleDownY.setDuration(timeSuckIn);

    ObjectAnimator rotate = ObjectAnimator.ofFloat(f, "rotation", 0f,180f);
    rotate.setDuration(timeSuckIn);
    rotate.setStartDelay(timeTranslate);

    AnimatorSet animatorSet = new AnimatorSet();

    animatorSet.addListener(new AnimatorListenerAdapter() {
      public void onAnimationEnd(Animator animation) {
        mFigures.remove(f);
        removeView(f.getView());
        invalidate();
      }
    });

    animatorSet.play(translateX).with(translateY).with(fadeOut).with(scaleDownY).with(scaleDownX).with(rotate);
    animatorSet.start();

  }

  /**
   * This method removes all the elements displayed in the canvas
   */
  public void removeAllElements(){  
    for(int i = 0; i < mFigures.size(); i++){

      mFigures.get(i).delete(true);
    }

  }
  
  /**
   * Source elements getter
   * @return This is the source of the getter
   */
  public int getSourceElements(){
    return sourceElements;
  }
}

Java Source Code List

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