package android.serialport.api.sample;

import java.util.ArrayList;
import java.util.List;

import android.animation.ObjectAnimator;
import android.content.Intent;
import android.graphics.Color;
import android.os.Bundle;
import android.serialport.api.SerialPort;
import android.support.v4.app.Fragment;
import android.support.v4.app.FragmentActivity;
import android.support.v4.view.ViewPager;
import android.support.v4.view.ViewPager.OnPageChangeListener;
import android.util.DisplayMetrics;
import android.util.Log;
import android.view.MotionEvent;
import android.view.View;
import android.view.View.OnClickListener;
import android.view.ViewGroup.LayoutParams;
import android.widget.HorizontalScrollView;
import android.widget.ImageView;
import android.widget.TextView;

public class MainActivity extends FragmentActivity implements OnClickListener, OnPageChangeListener {

	public static MainActivity CuttentActivity;
	public Fragment_BUS mFragment_BUS;
	public Fragment_KNX mFragment_KNX;
	public Fragment_Update mFragment_Update;
	private ViewPager mViewPager;
	private TextView TabTextView_BUS, TabTextView_KNX, TabTextView_Upgrade;
	private ImageView Tab_Line;
	private List<Fragment> mFragmentList;
	private int moveOne = 0;
	private boolean isScrolling = false;// 手指是否在移动
	/** 手指离开后的回弹 */
	private boolean isBackScrolling = false;// 手指离开后的回弹
	private long startTime = 0;
	private long currentTime = 0;

	@Override
	protected void onCreate(Bundle savedInstanceState) {
		super.onCreate(savedInstanceState);

		CuttentActivity = this;

		setContentView(R.layout.activity_main);

		iniView();
		iniData();
		SetImageLineWidth();
	}

	@Override
	protected void onStart() {
		super.onStart();

		Intent intent = new Intent(this, MyService.class);
		startService(intent);
	}

	@Override
	protected void onResume() {
		super.onResume();
	}

	@Override
	protected void onStop() {
		super.onStop();

		Intent intent = new Intent(this, MyService.class);
		stopService(intent);
	}

	@Override
	protected void onDestroy() {
		super.onDestroy();

		android.os.Process.killProcess(android.os.Process.myPid());
	}

	private void iniView() {

		mFragmentList = new ArrayList<Fragment>();

		mFragment_BUS = new Fragment_BUS();
		mFragment_KNX = new Fragment_KNX();
		mFragment_Update = new Fragment_Update();

		mFragmentList.add(mFragment_BUS);
		mFragmentList.add(mFragment_KNX);
		mFragmentList.add(mFragment_Update);

		TabTextView_BUS = (TextView) findViewById(R.id.textView_bus);
		TabTextView_BUS.setTextColor(Color.RED);
		TabTextView_KNX = (TextView) findViewById(R.id.textView_knx);
		TabTextView_Upgrade = (TextView) findViewById(R.id.textView_upgrade);
		TabTextView_BUS.setOnClickListener(this);
		TabTextView_KNX.setOnClickListener(this);
		TabTextView_Upgrade.setOnClickListener(this);

		mViewPager = (ViewPager) findViewById(R.id.mViewPager);
		mViewPager.setAdapter(new MyFragmentAdapter(getSupportFragmentManager(), mFragmentList));

		mViewPager.setCurrentItem(0);
		mViewPager.addOnPageChangeListener(this);
		Tab_Line = (ImageView) findViewById(R.id.tab_image);
	}

	private void iniData() {
		
		CuttentActivity = this;
		SerialPort.BackLight_ON();
	}

	// 下划线跟随手指的滑动而滑动
	private void movePositionX(int toPosition, float positionOffsetPixels) {

		float curTranslationX = Tab_Line.getTranslationX();
		float toPositionX = moveOne * toPosition + positionOffsetPixels;
		ObjectAnimator animator = ObjectAnimator.ofFloat(Tab_Line, "TranslationX", curTranslationX, toPositionX);
		animator.setDuration(1000);
		animator.start();
	}

	// 下划线滑动到新的选项中
	private void movePositionX(int toPosition) {
		movePositionX(toPosition, 0);
	}

	/** 设置线条的宽度 */
	private void SetImageLineWidth() {

		DisplayMetrics dm = new DisplayMetrics();
		getWindowManager().getDefaultDisplay().getMetrics(dm);
		int screew = dm.widthPixels;// 获取屏幕的宽

		// 重新设置划线宽
		LayoutParams lp = Tab_Line.getLayoutParams();
		lp.width = screew / 3;
		Tab_Line.setLayoutParams(lp);

		moveOne = lp.width;// 记录距离
	}

	@Override
	public void onPageScrolled(int position, float positionOffset, int positionOffsetPixels) {

		currentTime = System.currentTimeMillis();

		if (isScrolling && (currentTime - startTime > 200)) {
			movePositionX(position, moveOne * positionOffset);
			startTime = currentTime;
		}

		if (isBackScrolling) {
			movePositionX(position);
		}
	}

	@Override
	public void onPageSelected(int position) {

		switch (position) {
		case 0:
			TabTextView_BUS.setTextColor(Color.RED);
			TabTextView_KNX.setTextColor(Color.BLACK);
			TabTextView_Upgrade.setTextColor(Color.BLACK);
			break;
		case 1:
			TabTextView_BUS.setTextColor(Color.BLACK);
			TabTextView_KNX.setTextColor(Color.RED);
			TabTextView_Upgrade.setTextColor(Color.BLACK);
			break;
		case 2:
			TabTextView_BUS.setTextColor(Color.BLACK);
			TabTextView_KNX.setTextColor(Color.BLACK);
			TabTextView_Upgrade.setTextColor(Color.RED);
			break;
		default:
			break;
		}
	}

	@Override
	public void onPageScrollStateChanged(int state) {

		switch (state) {
		case 1:// 手指拖动
			isScrolling = true;
			isBackScrolling = false;
			break;
		case 2:// 手指弹起
			isScrolling = false;
			isBackScrolling = true;
			break;
		default:// 0 动作完成
			isScrolling = false;
			isBackScrolling = false;
			break;
		}
	}

	@Override
	public void onClick(View v) {

		if (v.equals(TabTextView_BUS)) {
			//
			mViewPager.setCurrentItem(0);
			// ReadViewLocation(v);

		} else if (v.equals(TabTextView_KNX)) {
			//
			mViewPager.setCurrentItem(1);
			// ReadViewLocation(v);

		} else if (v.equals(TabTextView_Upgrade)) {
			//
			mViewPager.setCurrentItem(2);
			// ReadViewLocation(v);

		} else {
			//
		}
	}

	@Override
	public boolean dispatchTouchEvent(MotionEvent ev) {

		try {
			if (Fragment_BUS.openBackLight != null) {
				if (!Fragment_BUS.openBackLight.isChecked()) {
					SerialPort.BackLight_ON();
					Fragment_BUS.openBackLight.setChecked(true);
				}
			}
		} catch (Exception e) {
			//
		}
		return super.dispatchTouchEvent(ev);
	}

}