package com.gyarmy.testcolor;



import android.os.Bundle;

import android.os.Environment;

import android.app.Activity;

import android.graphics.Bitmap;

import android.graphics.BitmapFactory;

import android.graphics.Canvas;

import android.graphics.ColorMatrix;

import android.graphics.ColorMatrixColorFilter;

import android.graphics.Matrix;

import android.graphics.Paint;

import android.graphics.drawable.BitmapDrawable;

import android.view.Menu;

import android.widget.ImageView;

import android.widget.SeekBar;

import android.widget.SeekBar.OnSeekBarChangeListener;

import android.widget.TextView;



public class MainActivity extends Activity implements OnSeekBarChangeListener {

	

	private SeekBar seek_red;

	private SeekBar seek_green;

	private SeekBar seek_blue;

	private TextView text_content;

	private ImageView iv_mm;

	private Bitmap img_src;

	private float redMe = 1f;

	private float greenMe = 1f;

	private float blueMe = 1f;

	

	

    @Override

    protected void onCreate(Bundle savedInstanceState) {

        super.onCreate(savedInstanceState);

        setContentView(R.layout.activity_main);

        

        seek_red = (SeekBar)findViewById(R.id.seek_red);

        seek_green = (SeekBar)findViewById(R.id.seek_green);

        seek_blue = (SeekBar)findViewById(R.id.seek_blue);

        text_content = (TextView)findViewById(R.id.text_content);

        iv_mm = (ImageView) findViewById(R.id.iv_mm);

        

        //String path = Environment.getExternalStorageDirectory().toString();

        String path = "/storage/emulated/0/Pictures/Screenshots/pic.png";

    	img_src = BitmapFactory.decodeFile(path);

        iv_mm.setImageBitmap(img_src);

        

        seek_red.setOnSeekBarChangeListener(this);

        seek_green.setOnSeekBarChangeListener(this);

        seek_blue.setOnSeekBarChangeListener(this);

        

    }



	@Override

	public void onProgressChanged(SeekBar seekBar, int progress,

			boolean fromUser) {

		// TODO Auto-generated method stub

		text_content.setText("progress:"+progress);

	}



	@Override

	public void onStartTrackingTouch(SeekBar seekBar) {

		// TODO Auto-generated method stub

		

	}



	@Override

	public void onStopTrackingTouch(SeekBar seekBar) {

		// TODO Auto-generated method stub

		

		//改变图片的颜色

		

		//Bitmap img_dst = ((BitmapDrawable)(iv_mm.getDrawable())).getBitmap();

		if(seekBar == seek_red){

			redMe = seek_red.getProgress();

		}else if(seekBar == seek_green){

			greenMe = seek_green.getProgress();

		}else if(seekBar == seek_blue){

			blueMe = seek_blue.getProgress();

		}

		

		

		

		

		

		Bitmap img_dst = Bitmap.createBitmap(img_src.getWidth(), img_src.getHeight(), img_src.getConfig());

		Canvas cas = new Canvas(img_dst);

		Paint paint = new Paint();

		Matrix matrix = new Matrix();

		

		float[] cm = new float[]{

				1*redMe/100,0,0,0,0,

				0,1*greenMe/100,0,0,0,

				0,0,1*blueMe/100,0,0,

				0,0,0,1,0

		};

		

		

		paint.setColorFilter(new ColorMatrixColorFilter(new ColorMatrix(cm)));

		

		//matrix.setRotate(40);

		

		cas.drawBitmap(img_src, matrix, paint);

		iv_mm.setImageBitmap(img_dst);

		

	}



    

}