Magic Cube

// basicAngle==4, i.e. something whose rotations are by  90 degrees (RubikCube) or

// basicAngle==2, i.e. something whose rotations are by 180 degrees (e.g. a 3x2x1 'Bunny')

// only works if basicAngle<=4, i.e. won't work for something whose basic rotations are by less

// only works for basicAngle<=4.

  private static final int FAKE_EFFECT_ID = -4;

      if( v.getId() == RubikStateAbstract.BUTTON_ID_BACK )

        RubikState.goBack(this);

///////////////////////////////////////////////////////////////////////////////////////////////////

    public void changeObject(int object, int size)

      {

      RubikObjectList obj = RubikObjectList.getObject(object);

      int objectSize = obj.getSizes()[size];

      RubikSurfaceView view = findViewById(R.id.rubikSurfaceView);

      view.getRenderer().createObject(obj,objectSize);

      }

///////////////////////////////////////////////////////////////////////////////////////////////////

    public boolean isVertical()

      {

      RubikSurfaceView view = findViewById(R.id.rubikSurfaceView);

      return view.isVertical();

      }

    if( mObjButton==null ) setupObjectButton(act,scale);

    if( mBackButton==null ) setupBackButton(act,scale);

    if( mPopup==null ) setupPopupWindow(act, scale);

    }

///////////////////////////////////////////////////////////////////////////////////////////////////

  private void setupObjectButton(final RubikActivity act, final float scale)

    {

    int padding = (int)(3*scale + 0.5f);

    LinearLayout.LayoutParams objectParams = new LinearLayout.LayoutParams(LinearLayout.LayoutParams.WRAP_CONTENT,LinearLayout.LayoutParams.MATCH_PARENT);

    mObjButton = new ImageButton(act);

    mObjButton.setLayoutParams(objectParams);

    mObjButton.setId(BUTTON_ID_OBJECT);

    mObjButton.setPadding(padding,0,padding,0);

    mObjButton.setImageResource(R.drawable.cube_menu);

    mObjButton.setOnClickListener( new View.OnClickListener()

      {

      @Override

      public void onClick(View view)

        int total = RubikObjectList.getTotal();

        boolean vertical = act.isVertical();

        mLayout.setOrientation(vertical ? LinearLayout.VERTICAL:LinearLayout.HORIZONTAL);

        int height = view.getHeight();

        int width  = view.getWidth();

        int laywid = mLayoutWidth * (vertical? 1:total);

        int layhei = mLayoutHeight* (vertical? total:1);

        mPopup.showAsDropDown(view, (width-laywid)/2, -height-layhei, Gravity.LEFT);

        }

      });

    }

///////////////////////////////////////////////////////////////////////////////////////////////////

  private void setupBackButton(final RubikActivity act, final float scale)

    {

    int padding = (int)(3*scale + 0.5f);

    LinearLayout.LayoutParams backParams = new LinearLayout.LayoutParams(LinearLayout.LayoutParams.MATCH_PARENT,LinearLayout.LayoutParams.MATCH_PARENT);

    mBackButton = new Button(act);

    mBackButton.setLayoutParams(backParams);

    mBackButton.setId(BUTTON_ID_BACK);

    mBackButton.setPadding(padding,0,padding,0);

    mBackButton.setText(R.string.back);

    mBackButton.setOnClickListener(act);

  private void setupPopupWindow(final RubikActivity act, final float scale)

    LayoutInflater layoutInflater = (LayoutInflater)act.getSystemService(Context.LAYOUT_INFLATER_SERVICE);

    final View layout = layoutInflater.inflate(R.layout.popup_objects, null);

    mLayout = layout.findViewById(R.id.popup);

    mPopup = new PopupWindow(act);

    mPopup.setContentView(layout);

    mPopup.setFocusable(true);

    int margin = (int)(5*scale + 0.5f);

    BitmapDrawable bd = (BitmapDrawable) act.getResources().getDrawable(R.drawable.cube2);

    int cubeWidth  = bd.getIntrinsicWidth();

    int cubeHeight = bd.getIntrinsicHeight();

    mLayoutWidth = (int)(cubeWidth + 2*margin + 0.5f);

    mLayoutHeight= (int)(cubeHeight+ 2*margin + 0.5f);

    for(int object=0; object<RubikObjectList.NUM_OBJECTS; object++)

      {

      RubikObjectList list = RubikObjectList.getObject(object);

      int[] sizes = list.getSizes();

      int[] icons = list.getIconIDs();

      int len = sizes.length;

      final int obj = object;

      for(int i=0; i<len; i++)

        {

        final int size = i;

        LinearLayout.LayoutParams p = new LinearLayout.LayoutParams(LinearLayout.LayoutParams.WRAP_CONTENT,LinearLayout.LayoutParams.WRAP_CONTENT);

        p.setMargins(margin, margin, margin, margin);

        ImageButton button = new ImageButton(act);

        button.setLayoutParams(p);

        button.setBackgroundResource(icons[i]);

        button.setOnClickListener( new View.OnClickListener()

          {

          @Override

          public void onClick(View v)

            {

            mObject = obj;

            mSize   = size;

            act.changeObject(obj,size);

            mPopup.dismiss();

            }

          });

        mLayout.addView(button);

        }

      }