VerticalSeekBar.java

package com.eighteengray.procamera.widget;

import android.content.Context;
import android.graphics.Canvas;
import android.util.AttributeSet;
import android.util.Log;
import android.view.MotionEvent;
import android.widget.SeekBar;


public class VerticalSeekBar extends SeekBar
{
    public VerticalSeekBar(Context context)
    {
        super(context);
    }

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

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

    @Override
    protected void onDraw(Canvas c)
    {
        c.rotate(-90);
        c.translate(-getHeight(), 0);
        super.onDraw(c);
    }

    @Override
    protected synchronized void onMeasure(int widthMeasureSpec, int heightMeasureSpec)
    {
        super.onMeasure(heightMeasureSpec, widthMeasureSpec);
        setMeasuredDimension(getMeasuredHeight(), getMeasuredWidth());
    }


    @Override
    public boolean onTouchEvent(MotionEvent event)
    {
        if (!isEnabled())
        {
            return false;
        }
        switch (event.getAction())
        {
            case MotionEvent.ACTION_MOVE:
                int i = 0;
                i = getMax() - (int) (getMax() * event.getY() / getHeight());
                setProgress(i);
                Log.i("Progress", getProgress() + "");
                onSizeChanged(getWidth(), getHeight(), 0, 0);
                break;
        }
        return true;
    }

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