Magic Cube

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// Copyright 2020 Leszek Koltunski                                                               //

//                                                                                               //

// This file is part of Magic Cube.                                                              //

//                                                                                               //

// Magic Cube 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 2 of the License, or                             //

// (at your option) any later version.                                                           //

//                                                                                               //

// Magic Cube 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 Magic Cube.  If not, see <http://www.gnu.org/licenses/>.                           //

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

package org.distorted.uistate;

import android.content.SharedPreferences;

import android.graphics.Bitmap;

import android.graphics.Canvas;

import android.graphics.Paint;

import android.util.DisplayMetrics;

import android.view.View;

import android.widget.Button;

import android.widget.ImageButton;

import android.widget.LinearLayout;

import org.distorted.magic.R;

import org.distorted.magic.RubikActivity;

import org.distorted.object.RubikObjectList;

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public class RubikStateSolver extends RubikStateAbstract

  {

  private static final int NUM_FACES   =  6;

  private static final int BITMAP_SIZE = 35;

  private static final int[] FACE_COLORS = new int[]

         {

           0xffffff00, 0xffffffff,

           0xff0000ff, 0xff00ff00,

           0xffff0000, 0xffb5651d

         };

  private static Bitmap[] mBitmap;

  private ImageButton[] mColorButton;

  private Button mBackButton;

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

  void leaveState(RubikActivity act)

    {

    }

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

  void enterState(final RubikActivity act)

    {

    act.changeObject(RubikObjectList.CUBE,3,null);

    DisplayMetrics metrics = act.getResources().getDisplayMetrics();

    final float scale = metrics.density;

    // TOP ////////////////////////////

    LinearLayout layoutTop = act.findViewById(R.id.upperBar);

    layoutTop.removeAllViews();

    if( mBitmap     ==null ) setupBitmaps(scale);

    if( mColorButton==null ) setupColorButtons(act,scale);

    for(ImageButton button: mColorButton) layoutTop.addView(button);

    // BOT ////////////////////////////

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

    LinearLayout layoutRight = act.findViewById(R.id.mainBarRight);

    layoutRight.removeAllViews();

    layoutRight.addView(mBackButton);

    }

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

//createFaceTexture(Canvas canvas, Paint paint, int face, int left, int top, int side);

  private void setupBitmaps(float scale)

    {

    final int SIZE = (int)(scale*BITMAP_SIZE);

    final float R = SIZE*0.10f;

    final float M = SIZE*0.05f;

    mBitmap = new Bitmap[NUM_FACES];

    Paint paint = new Paint();

    paint.setColor(0xff008800);

    paint.setStyle(Paint.Style.FILL);

    paint.setAntiAlias(true);

    paint.setTextAlign(Paint.Align.CENTER);

    paint.setStyle(Paint.Style.FILL);

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

      {

      mBitmap[i] = Bitmap.createBitmap(SIZE, SIZE, Bitmap.Config.ARGB_8888);

      Canvas canvas = new Canvas(mBitmap[i]);

      paint.setColor(0xff000000);

      canvas.drawRect(0, 0, SIZE, SIZE, paint);

      paint.setColor(FACE_COLORS[i]);

      canvas.drawRoundRect( M, M, SIZE-M, SIZE-M, R, R, paint);

      }

    }

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

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

    {

    mColorButton = new ImageButton[NUM_FACES];

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

      {

      final int ii = i;

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

      LinearLayout.LayoutParams objectParams = new LinearLayout.LayoutParams(LinearLayout.LayoutParams.WRAP_CONTENT,LinearLayout.LayoutParams.MATCH_PARENT, 1.0f);

      mColorButton[i] = new ImageButton(act);

      mColorButton[i].setLayoutParams(objectParams);

      mColorButton[i].setPadding(padding,0,padding,0);

      mColorButton[i].setImageBitmap(mBitmap[i]);

      mColorButton[i].setOnClickListener( new View.OnClickListener()

        {

        @Override

        public void onClick(View view)

          {

          android.util.Log.e("solver", "button "+FACE_COLORS[ii]+" clicked");

          }

        });

      }

    }

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

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

    mBackButton.setText(R.string.back);

    mBackButton.setOnClickListener( new View.OnClickListener()

      {

      @Override

      public void onClick(View v)

        {

        RubikState.goBack(act);

        }

      });

    }

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

  public void savePreferences(SharedPreferences.Editor editor)

    {

    mColorButton = null;

    mBackButton  = null;

    }

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

  public void restorePreferences(SharedPreferences preferences)

    {

    }

  }