CropImageActivity.java

package com.d3.d3xmpp.activites;

import android.app.Activity;
import android.content.Intent;
import android.graphics.Bitmap;
import android.graphics.BitmapFactory;
import android.os.Bundle;
import android.os.Handler;
import android.os.Message;
import android.util.DisplayMetrics;
import android.view.Gravity;
import android.view.View;
import android.view.View.OnClickListener;
import android.view.ViewGroup.LayoutParams;
import android.widget.Button;
import android.widget.FrameLayout;
import android.widget.ProgressBar;

import com.d3.d3xmpp.util.Tool;
import com.d3.d3xmpp.util.sreenshot.CropImage;
import com.d3.d3xmpp.util.sreenshot.CropImageView;
import com.d3.d3xmpp.R;

/**
 * �ü�����
 * 
 */
public class CropImageActivity extends Activity implements OnClickListener {
	public static boolean isAutoSend = true;
	private CropImageView mImageView;
	private Bitmap mBitmap;

	private CropImage mCrop;

	private Button mSave;
	private Button mCancel, rotateLeft, rotateRight;
	private String mPath = "CropImageActivity";
	private String TAG = "";
	public int screenWidth = 0;
	public int screenHeight = 0;

	private ProgressBar mProgressBar;

	public static final int SHOW_PROGRESS = 2000;

	public static final int REMOVE_PROGRESS = 2001;

	private String img_path;
	private Handler mHandler = new Handler() {
		@Override
		public void handleMessage(Message msg) {

			switch (msg.what) {
			case SHOW_PROGRESS:
				mProgressBar.setVisibility(View.VISIBLE);
				break;
			case REMOVE_PROGRESS:
				mHandler.removeMessages(SHOW_PROGRESS);
				mProgressBar.setVisibility(View.INVISIBLE);
				break;
			}

		}
	};

	@Override
	public void onCreate(Bundle savedInstanceState) {
		super.onCreate(savedInstanceState);
		setContentView(R.layout.gl_modify_avatar);
		init();
	}

	@Override
	protected void onStop() {
		super.onStop();
		if (mBitmap != null) {
			mBitmap = null;
		}
	}

	private void init() {
		img_path = PicSrcPickerActivity.img_path;
		getWindowWH();
		mPath = getIntent().getStringExtra("path");
//		Log.i(TAG, "�õ���ͼƬ��·���� = " + mPath);
		mImageView = (CropImageView) findViewById(R.id.gl_modify_avatar_image);
		mSave = (Button) this.findViewById(R.id.gl_modify_avatar_save);
		mCancel = (Button) this.findViewById(R.id.gl_modify_avatar_cancel);
		rotateLeft = (Button) this
				.findViewById(R.id.gl_modify_avatar_rotate_left);
		rotateRight = (Button) this
				.findViewById(R.id.gl_modify_avatar_rotate_right);
		mSave.setOnClickListener(this);
		mCancel.setOnClickListener(this);
		rotateLeft.setOnClickListener(this);
		rotateRight.setOnClickListener(this);
		try {
			mBitmap = createBitmap(mPath, screenWidth, screenHeight);
			if (mBitmap == null) {
				Tool.initToast(CropImageActivity.this, "û���ҵ�ͼƬ");
				finish();
			} else {
				resetImageView(mBitmap);
			}
		} catch (Exception e) {
			Tool.initToast(CropImageActivity.this, "û���ҵ�ͼƬ");
			finish();
		}
		addProgressbar();
		
		if (isAutoSend) {
			Tool.initToast(CropImageActivity.this, "ͼ������,���Ժ�...");
			String path = mCrop.saveToLocal(mBitmap, img_path);
			Intent intent = new Intent();
			intent.putExtra("path", path);
			setResult(RESULT_OK, intent);
			finish();
		}
	}

	/**
	 * ��ȡ��Ļ�ĸߺͿ�
	 */
	private void getWindowWH() {
		DisplayMetrics dm = new DisplayMetrics();
		getWindowManager().getDefaultDisplay().getMetrics(dm);
		screenWidth = dm.widthPixels;
		screenHeight = dm.heightPixels;
	}

	private void resetImageView(Bitmap b) {
		mImageView.clear();
		mImageView.setImageBitmap(b);
		mImageView.setImageBitmapResetBase(b, true);
		mCrop = new CropImage(this, mImageView, mHandler);
		mCrop.crop(b);
	}

	public void onClick(View v) {
		switch (v.getId()) {
		case R.id.gl_modify_avatar_cancel:
			// mCrop.cropCancel();
			finish();
			break;
		case R.id.gl_modify_avatar_save:
			String path = mCrop.saveToLocal(mCrop.cropAndSave(), img_path);
			Intent intent = new Intent();
			intent.putExtra("path", path);
			setResult(RESULT_OK, intent);
			finish();
			break;
		case R.id.gl_modify_avatar_rotate_left:
			mCrop.startRotate(270.f);
			break;
		case R.id.gl_modify_avatar_rotate_right:
			mCrop.startRotate(90.f);
			break;

		}
	}

	protected void addProgressbar() {
		mProgressBar = new ProgressBar(this);
		FrameLayout.LayoutParams params = new FrameLayout.LayoutParams(
				LayoutParams.WRAP_CONTENT, LayoutParams.WRAP_CONTENT);
		params.gravity = Gravity.CENTER;
		addContentView(mProgressBar, params);
		mProgressBar.setVisibility(View.INVISIBLE);
	}

	public Bitmap createBitmap(String path, int w, int h) {
		try {
			BitmapFactory.Options opts = new BitmapFactory.Options();
			opts.inJustDecodeBounds = true;
			// ���������������Ĺؼ���inJustDecodeBounds��Ϊtrueʱ����ΪͼƬ�����ڴ档
			BitmapFactory.decodeFile(path, opts);
			int srcWidth = opts.outWidth;// ��ȡͼƬ��ԭʼ���
			int srcHeight = opts.outHeight;// ��ȡͼƬԭʼ�߶�
			int destWidth = 0;
			int destHeight = 0;
			// ���ŵı���
			double ratio = 0.0;
			if (srcWidth < w || srcHeight < h) {
				ratio = 0.0;
				destWidth = srcWidth;
				destHeight = srcHeight;
			} else if (srcWidth > srcHeight) {// �������������ź��ͼƬ��С��maxLength�dz�����������󳤶�
				ratio = (double) srcWidth / w;
				destWidth = w;
				destHeight = (int) (srcHeight / ratio);
			} else {
				ratio = (double) srcHeight / h;
				destHeight = h;
				destWidth = (int) (srcWidth / ratio);
			}
			BitmapFactory.Options newOpts = new BitmapFactory.Options();
			// ���ŵı����������Ǻ��Ѱ�׼���ı����������ŵģ�Ŀǰ��ֻ����ֻ��ͨ��inSampleSize���������ţ���ֵ�������ŵı�����SDK�н�����ֵ��2��ָ��ֵ
			newOpts.inSampleSize = (int) ratio + 2;
			// inJustDecodeBounds��Ϊfalse��ʾ��ͼƬ�����ڴ���
			newOpts.inJustDecodeBounds = false;
			// ���ô�С�����һ���Dz�׼ȷ�ģ�����inSampleSize��Ϊ׼���������������ȴ��������
			newOpts.outHeight = destHeight;
			newOpts.outWidth = destWidth;
			// ��ȡ���ź�ͼƬ
			return BitmapFactory.decodeFile(path, newOpts);
		} catch (Exception e) {
			// TODO: handle exception
			return null;
		}
	}

}