Magic Cube

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// Copyright 2024 Leszek Koltunski                                                               //

//                                                                                               //

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

//                                                                                               //

// Magic Cube is proprietary software licensed under an EULA which you should have received      //

// along with the code. If not, check https://distorted.org/magic/License-Magic-Cube.html        //

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package org.distorted.helpers;

import android.content.SharedPreferences;

import android.content.res.Configuration;

import android.os.Build;

import android.os.Bundle;

import android.util.DisplayMetrics;

import android.view.View;

import android.view.ViewGroup;

import android.view.WindowManager;

import android.widget.LinearLayout;

import androidx.appcompat.app.AppCompatActivity;

import androidx.preference.PreferenceManager;

import org.distorted.main.R;

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public class BaseActivity extends AppCompatActivity

{

    protected static final int THEME_GREY  = 0;

    protected static final int THEME_WHITE = 1;

    protected static final int THEME_GREEN = 2;

    public static final float RATIO_HID = 0.050f;

    public static final float RATIO_BAR = 0.080f;

    public static final int FLAGS =  View.SYSTEM_UI_FLAG_LAYOUT_HIDE_NAVIGATION

                                   | View.SYSTEM_UI_FLAG_LAYOUT_FULLSCREEN

                                   | View.SYSTEM_UI_FLAG_HIDE_NAVIGATION

                                   | View.SYSTEM_UI_FLAG_FULLSCREEN

                                   | View.SYSTEM_UI_FLAG_IMMERSIVE_STICKY;

    private int mCurrentApiVersion;

    protected int mCurrentTheme;

    protected int mScreenWidth, mScreenHeight;

    protected int mHeightLowerBar, mHeightUpperBar;

    protected float mDensity;

    protected SharedPreferences mPreferences;

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    @Override

    protected void onCreate(Bundle savedState)

      {

      mPreferences = PreferenceManager.getDefaultSharedPreferences(this);

      mCurrentTheme = mPreferences.getInt("theme",THEME_GREY);

      mDensity = getResources().getDisplayMetrics().density;

      switch(mCurrentTheme)

        {

        case THEME_WHITE : setTheme(R.style.WhiteTheme); break;

        case THEME_GREEN : setTheme(R.style.GreenTheme); break;

        default          : setTheme(R.style.GreyTheme);  break;

        }

      super.onCreate(savedState);

      }

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    public void changeThemeTo(int theme)

      {

      mCurrentTheme = theme;

      SharedPreferences.Editor editor = mPreferences.edit();

      editor.putInt("theme", mCurrentTheme );

      editor.apply();

      recreate();

      }

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    protected void getWindowWidth(Configuration conf)

      {

      int dpi = getResources().getDisplayMetrics().densityDpi;

      float conv = ((float) dpi/DisplayMetrics.DENSITY_DEFAULT);

      mScreenWidth = (int) (conf.screenWidthDp*conv + 0.5f);

      mScreenHeight= (int) (conf.screenHeightDp*conv + 0.5f);

      }

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    protected void computeScreenDimensions()

      {

      DisplayMetrics displaymetrics = new DisplayMetrics();

      getWindowManager().getDefaultDisplay().getRealMetrics(displaymetrics);

      mScreenWidth =displaymetrics.widthPixels;

      mScreenHeight=displaymetrics.heightPixels;

      }

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    protected void computeLowerBarHeight(float ratio)

      {

      int barHeight = (int)(mScreenHeight*ratio);

      mHeightLowerBar = barHeight;

      LinearLayout layout = findViewById(R.id.lowerBar);

      ViewGroup.LayoutParams params = layout.getLayoutParams();

      params.height = barHeight;

      layout.setLayoutParams(params);

      }

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// this does not include possible insets

    protected void computeUpperBarHeight(float ratio)

      {

      int barHeight = (int)(mScreenHeight*ratio);

      mHeightUpperBar = barHeight;

      LinearLayout layout = findViewById(R.id.upperBar);

      ViewGroup.LayoutParams params = layout.getLayoutParams();

      params.height = barHeight;

      layout.setLayoutParams(params);

      }

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    protected void hideNavigationBar()

      {

      mCurrentApiVersion = Build.VERSION.SDK_INT;

      if(mCurrentApiVersion >= Build.VERSION_CODES.KITKAT)

        {

        final View decorView = getWindow().getDecorView();

        decorView.setSystemUiVisibility(FLAGS);

        decorView.setOnSystemUiVisibilityChangeListener(new View.OnSystemUiVisibilityChangeListener()

          {

          @Override

          public void onSystemUiVisibilityChange(int visibility)

            {

            if((visibility & View.SYSTEM_UI_FLAG_FULLSCREEN) == 0)

              {

              decorView.setSystemUiVisibility(FLAGS);

              }

            }

          });

        }

      }

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// do not avoid cutouts

    protected void cutoutHack()

      {

      if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.P)

        {

        getWindow().getAttributes().layoutInDisplayCutoutMode = WindowManager.LayoutParams.LAYOUT_IN_DISPLAY_CUTOUT_MODE_SHORT_EDGES;

        }

      }

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    @Override

    public void onWindowFocusChanged(boolean hasFocus)

      {

      super.onWindowFocusChanged(hasFocus);

      if(mCurrentApiVersion >= Build.VERSION_CODES.KITKAT && hasFocus)

        {

        getWindow().getDecorView().setSystemUiVisibility(FLAGS);

        }

      }

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    public int getScreenWidthInPixels()

      {

      return mScreenWidth;

      }

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    public int getScreenHeightInPixels()

      {

      return mScreenHeight;

      }

}