package com.example.rgb_cos;

import androidx.appcompat.app.AppCompatActivity;

import android.graphics.Color;
import android.os.Bundle;
import android.view.View;
import android.widget.SeekBar;
import android.widget.TextView;

public class MainActivity extends AppCompatActivity {
        View panel;
        SeekBar suwakR, suwakG, suwakB;
        TextView opisR, opisG, opisB;
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);

        panel = (View)findViewById(R.id.panel);
        suwakR = (SeekBar)findViewById(R.id.suwakR);
        suwakG = (SeekBar)findViewById(R.id.suwakG);
        suwakB = (SeekBar)findViewById(R.id.suwakB);
        opisR = (TextView)findViewById(R.id.opisR);
        opisG = (TextView)findViewById(R.id.opisG);
        opisB = (TextView)findViewById(R.id.opisB);
        rysuj();

        SeekBar.OnSeekBarChangeListener sluchacz = new SeekBar.OnSeekBarChangeListener() {
            @Override
            public void onProgressChanged(SeekBar seekBar, int progress, boolean fromUser) {
                rysuj();
            }

            @Override
            public void onStartTrackingTouch(SeekBar seekBar) {

            }

            @Override
            public void onStopTrackingTouch(SeekBar seekBar) {

            }
        };

        suwakR.setOnSeekBarChangeListener(sluchacz);
        suwakG.setOnSeekBarChangeListener(sluchacz);
        suwakB.setOnSeekBarChangeListener(sluchacz);
    }

    private void rysuj() {
        int kolor = Color.argb(255,
                suwakR.getProgress(),
                suwakG.getProgress(),
                suwakB.getProgress());
        panel.setBackgroundColor(kolor);

        opisR.setText("R="+String.valueOf(suwakR.getProgress()));
        opisG.setText("G="+String.valueOf(suwakG.getProgress()));
        opisB.setText("B="+String.valueOf(suwakB.getProgress()));
    }
}