package cn.com.basic.face.base;

import java.io.IOException;
import java.io.OutputStream;
import java.util.List;

import android.app.Activity;
import android.content.ContentValues;
import android.content.Intent;
import android.hardware.Camera;
import android.net.Uri;
import android.os.Bundle;
import android.provider.MediaStore.Images;
import android.util.Log;
import android.view.Menu;
import android.view.MenuItem;
import android.view.MotionEvent;
import android.view.SurfaceHolder;
import android.view.SurfaceView;
import android.view.View;
import android.view.View.OnTouchListener;

import com.bsk.zhangbo.demoforbsk.R;

public class PictureTaker extends Activity
{
    private static final String TAG = "PICTURE_TAKER";

    private SurfaceView surfaceView;
    private SurfaceHolder surfaceHolder;
    private boolean isPreviewing;

    private Camera camera;
    private List<String> effects;
    private List<Camera.Size> sizes;
    private String effect = Camera.Parameters.EFFECT_NONE;

    @Override
    public void onCreate(Bundle bundle)
    {
        super.onCreate(bundle);
        setContentView(R.layout.fragment_register_camera_preview);

        surfaceView = (SurfaceView) findViewById(R.id.cameraSurfaceView);
        surfaceView.setOnTouchListener(touchListener);

        surfaceHolder = surfaceView.getHolder();
        surfaceHolder.addCallback(surfaceCallback);

        surfaceHolder.setType(SurfaceHolder.SURFACE_TYPE_PUSH_BUFFERS);
    }

    @Override
    public boolean onCreateOptionsMenu(Menu menu)
    {
        super.onCreateOptionsMenu(menu);

        for (String effect : effects)
            menu.add(effect);

        return true;
    }

    @Override
    public boolean onOptionsItemSelected(MenuItem item)
    {
        Camera.Parameters p = camera.getParameters();
        p.setColorEffect(item.getTitle().toString());
        camera.setParameters(p);
        return true;
    }

    private SurfaceHolder.Callback surfaceCallback =
            new SurfaceHolder.Callback()
            {
                @Override
                public void surfaceDestroyed(SurfaceHolder arg0)
                {
                    camera.stopPreview();
                    isPreviewing = false;
                    camera.release();
                }

                @Override
                public void surfaceCreated(SurfaceHolder arg0)
                {
                    camera = Camera.open();
                    effects = camera.getParameters().getSupportedColorEffects();
                    sizes = camera.getParameters().getSupportedPreviewSizes();
                }

                @Override
                public void surfaceChanged(SurfaceHolder holder, int format,
                                           int width, int height)
                {
                    if (isPreviewing)
                        camera.stopPreview();

                    Camera.Parameters p = camera.getParameters();
                    p.setPreviewSize(sizes.get(0).width, sizes.get(0).height);
                    p.setColorEffect(effect);
                    p.setFocusMode(Camera.Parameters.FOCUS_MODE_CONTINUOUS_PICTURE);
                    camera.setParameters(p);

                    try
                    {
                        camera.setPreviewDisplay(holder); // display using holder
                    }
                    catch (IOException e)
                    {
                        Log.v(TAG, e.toString());
                    }

                    camera.startPreview(); // begin the preview
                    isPreviewing = true;
                }
            };

    Camera.PictureCallback pictureCallback = new Camera.PictureCallback()
    {
        public void onPictureTaken(byte[] imageData, Camera c)
        {
            String fileName = "Slideshow_" + System.currentTimeMillis();

            ContentValues values = new ContentValues();
            values.put(Images.Media.TITLE, fileName);
            values.put(Images.Media.DATE_ADDED, System.currentTimeMillis());
            values.put(Images.Media.MIME_TYPE, "image/jpg");

            Uri uri = getContentResolver().insert(
                    Images.Media.EXTERNAL_CONTENT_URI, values);

            try
            {
                OutputStream outStream =
                        getContentResolver().openOutputStream(uri);
                outStream.write(imageData);
                outStream.flush();
                outStream.close();

                Intent returnIntent = new Intent();
                returnIntent.setData(uri);
                setResult(RESULT_OK, returnIntent);

                finish();
            }
            catch (IOException ex)
            {
                setResult(RESULT_CANCELED);
            }
        }
    };

    private OnTouchListener touchListener = new OnTouchListener()
    {
        @Override
        public boolean onTouch(View v, MotionEvent event)
        {
            camera.takePicture(null, null, pictureCallback);
            return false;
        }
    };
}