package com.example.easytune;

import android.content.Context;
import android.graphics.Canvas;
import android.graphics.Paint;
import android.util.AttributeSet;
import android.view.View;
import android.widget.ImageView;

public class PitchView extends View{

    public float centerPitch, currentPitch;
    private int width, height;
    private final Paint paint = new Paint();

	private ImageView middlesquare_off = (ImageView) findViewById(R.drawable.middlesquare_off);
	private ImageView right_arrow_off = (ImageView) findViewById(R.drawable.right_arrow_off);
	private ImageView left_arrow_off = (ImageView) findViewById(R.drawable.left_arrow_off);

    public PitchView(Context context) {
        super(context);
      }

    public PitchView(Context context, AttributeSet attrs) {
        super(context, attrs);
    }

    public PitchView(Context context, AttributeSet attrs, int defStyle) {
        super(context, attrs, defStyle);
    }

    public void setCenterPitch(float centerPitch) {
        this.centerPitch = centerPitch;
        invalidate();
    }

    public void setCurrentPitch(float currentPitch) {
        this.currentPitch = currentPitch;
        invalidate();
    }

    @Override
    protected void onSizeChanged(int w, int h, int oldw, int oldh) {
        super.onSizeChanged(w, h, oldw, oldh);
        width = w;
        height = h;
    }

    @Override
    protected void onDraw(Canvas canvas) {
        //float halfWidth = width / 2;
        //paint.setStrokeWidth(6.0f);
        //paint.setColor(0xFFFF0000);
        //canvas.drawLine(halfWidth, 0, halfWidth, height, paint);

        float dx = (currentPitch - centerPitch) / 2;
        if (-1 < dx && dx < 1) {
           // paint.setStrokeWidth(2.0f);
           // paint.setColor(Color.BLUE);
        	changeMiddleTuner();
        } else {
           // paint.setStrokeWidth(8.0f);
           // paint.setColor(Color.RED);
            dx = (dx < 0) ? -1 : 1;
        }
        //double phi = dx * Math.PI / 4;
       // canvas.drawLine(halfWidth, height,
       // 		halfWidth + (float)Math.sin(phi) * height * 0.9f,
        //		height - (float)Math.cos(phi) * height * 0.9f, paint);
    }

	public void changeLeftTuner(){
		left_arrow_off.setImageResource(R.drawable.left_arrow_on);
	}

	public void changeMiddleTuner(){
		middlesquare_off.setImageResource(R.drawable.middlesquare_on);
	}

	public void changeRightTuner(){
		right_arrow_off.setImageResource(R.drawable.right_arrow_on);
	}
}