package com.bc_chat.im.activity.envelopes;

import android.app.Activity;
import android.content.Context;
import android.graphics.Bitmap;
import android.graphics.Rect;
import android.util.DisplayMetrics;
import android.view.View;
import android.view.WindowManager;
import android.widget.FrameLayout;
import android.widget.LinearLayout;
import android.widget.RelativeLayout;

import com.zhaohaoting.framework.imagepicker.camera.util.ScreenUtils;

/**
 * Created by zq on 2017/9/19 0019.
 */

public class ScreenUtil {

    private ScreenUtil() {
        /* cannot be instantiated */
        throw new UnsupportedOperationException("cannot be instantiated");
    }

    /**
     * 获取屏幕宽度
     */
    public static int getScreenWidth(Context context) {
        WindowManager wm = (WindowManager) context
                .getSystemService(Context.WINDOW_SERVICE);
        DisplayMetrics outMetrics = new DisplayMetrics();
        wm.getDefaultDisplay().getMetrics(outMetrics);
        return outMetrics.widthPixels;
    }

    /**
     * 获取屏幕高度
     */
    public static int getScreenHeight(Context context) {
        WindowManager wm = (WindowManager) context
                .getSystemService(Context.WINDOW_SERVICE);
        DisplayMetrics outMetrics = new DisplayMetrics();
        wm.getDefaultDisplay().getMetrics(outMetrics);
        return outMetrics.heightPixels;
    }

    /**
     * 获取状态栏的高度
     */
    public static int getStatusHeight(Context context) {
        int statusHeight = -1;
        try {
            Class<?> clazz = Class.forName("com.android.internal.R$dimen.xml");
            Object object = clazz.newInstance();
            int height = Integer.parseInt(clazz.getField("status_bar_height")
                    .get(object).toString());
            statusHeight = context.getResources().getDimensionPixelSize(height);
        } catch (Exception e) {
            e.printStackTrace();
        }
        return statusHeight;
    }

    /**
     * 获取当前屏幕截图，包含状态栏
     */
    public static Bitmap snapShotWithStatusBar(Activity activity) {
        View view = activity.getWindow().getDecorView();
        view.setDrawingCacheEnabled(true);
        view.buildDrawingCache();
        Bitmap bmp = view.getDrawingCache();
        int width = getScreenWidth(activity);
        int height = getScreenHeight(activity);
        Bitmap bitmap = null;
        bitmap = Bitmap.createBitmap(bmp, 0, 0, width, height);
        view.destroyDrawingCache();
        return bitmap;
    }

    /**
     * 获取当前屏幕截图，不包含状态栏
     */
    public static Bitmap snapShotWithoutStatusBar(Activity activity) {
        View view = activity.getWindow().getDecorView();
        view.setDrawingCacheEnabled(true);
        view.buildDrawingCache();
        Bitmap bmp = view.getDrawingCache();
        Rect frame = new Rect();
        activity.getWindow().getDecorView().getWindowVisibleDisplayFrame(frame);
        int statusBarHeight = frame.top;
        int width = getScreenWidth(activity);
        int height = getScreenHeight(activity);
        Bitmap bitmap = null;
        bitmap = Bitmap.createBitmap(bmp, 0, statusBarHeight, width, height - statusBarHeight);
        view.destroyDrawingCache();
        return bitmap;
    }

    /**
     * 根据手机的分辨率从 dp 的单位 转成为 px(像素)
     */
    public static int dip2px(Context context, float dpValue) {
        final float scale = context.getResources().getDisplayMetrics().density;
        return (int) (dpValue * scale + 0.5f);
    }

    /**
     * 根据手机的分辨率从 px(像素) 的单位 转成为 dp
     */
    public static int px2dip(Context context, float pxValue) {
        final float scale = context.getResources().getDisplayMetrics().density;
        return (int) (pxValue / scale + 0.5f);
    }

    /**
     * 設置View的寬度（像素）。若設置爲自適應則應該傳入MarginLayoutParams.WRAP_CONTENT
     *
     * @param view
     * @param width
     */
    public static void setLayoutWidth(View view, int width) {
       /* MarginLayoutParams margin=new MarginLayoutParams(view.getLayoutParams());
        margin.setMargins(margin.leftMargin,y, margin.rightMargin, y+margin.height);
        //RelativeLayout.LayoutParams layoutParams = new RelativeLayout.LayoutParams(margin);
        //view.setLayoutParams(layoutParams);
        ViewGroup.MarginLayoutParams  layoutParams =newLayParms(view, margin);
        //RelativeLayout.LayoutParams layoutParams = new RelativeLayout.LayoutParams(margin);
        view.setLayoutParams(layoutParams);
        view.requestLayout();*/
        if (view.getParent() instanceof FrameLayout) {
            FrameLayout.LayoutParams lp = (FrameLayout.LayoutParams) view.getLayoutParams();
            lp.width = width;
            view.setLayoutParams(lp);
            //view.setX(x);
            view.requestLayout();
        } else if (view.getParent() instanceof RelativeLayout) {
            RelativeLayout.LayoutParams lp = (RelativeLayout.LayoutParams) view.getLayoutParams();
            lp.width = width;
            view.setLayoutParams(lp);
            //view.setX(x);
            view.requestLayout();
        } else if (view.getParent() instanceof LinearLayout) {
            LinearLayout.LayoutParams lp = (LinearLayout.LayoutParams) view.getLayoutParams();
            lp.width = width;
            view.setLayoutParams(lp);
            //view.setX(x);
            view.requestLayout();
        }
    }

    public static void setViewWidthOrHeigh(View view, int width, int heigh) {
        RelativeLayout.LayoutParams linearParams = (RelativeLayout.LayoutParams) view.getLayoutParams(); //取控件textView当前的布局参数 linearParams.height = 20;// 控件的高强制设成20
        linearParams.width = width;// 控件的宽强制设成30
        linearParams.height = heigh;// 控件的宽强制设成30
        view.setLayoutParams(linearParams);
    }

    /**
     * 计算出来的位置，y方向就在anchorView的上面和下面对齐显示，x方向就是与屏幕右边对齐显示
     * 如果anchorView的位置有变化，就可以适当自己额外加入偏移来修正
     *
     * @param anchorView  呼出window的view
     * @param contentView window的内容布局
     * @return window显示的左上角的xOff, yOff坐标
     */
    public static int[] calculatePopWindowPos(final View anchorView, final View contentView) {
        final int windowPos[] = new int[2];
        final int anchorLoc[] = new int[2];
        //  获取锚点View在屏幕上的左上角坐标位置
        anchorView.getLocationOnScreen(anchorLoc);
        final int anchorHeight = anchorView.getHeight();
        // 获取屏幕的高宽
        final int screenHeight = ScreenUtils.getScreenHeight(anchorView.getContext());
        final int screenWidth = ScreenUtils.getScreenWidth(anchorView.getContext());
        contentView.measure(View.MeasureSpec.UNSPECIFIED, View.MeasureSpec.UNSPECIFIED);
        // 计算contentView的高宽
        final int windowHeight = contentView.getMeasuredHeight();
        final int windowWidth = contentView.getMeasuredWidth();
        // 判断需要向上弹出还是向下弹出显示
        final boolean isNeedShowUp = (screenHeight - anchorLoc[1] - anchorHeight < windowHeight);
        if (isNeedShowUp) {
            windowPos[0] = screenWidth - windowWidth;
            windowPos[1] = anchorLoc[1] - windowHeight;
        } else {
            windowPos[0] = screenWidth - windowWidth;
            windowPos[1] = anchorLoc[1] + anchorHeight;
        }
        return windowPos;
    }
}
