package org.ar.utils;

import android.app.Activity;
import android.content.Context;
import android.content.res.Resources;
import android.graphics.Bitmap;
import android.graphics.Rect;
import android.util.DisplayMetrics;
import android.util.TypedValue;
import android.view.View;
import android.view.WindowManager;

/**
 * Get screen associated auxiliary class
 *
 * @author Ming <br/>
 */
public class ScreenUtils {
    private ScreenUtils() {
        /* cannot be instantiated */
        throw new UnsupportedOperationException("cannot be instantiated");
    }

    /**
     * dip to px
     *
     * @param dip
     * @param context
     * @return
     */
    public static float dip2Dimension(float dip, Context context) {
        DisplayMetrics displayMetrics = context.getResources().getDisplayMetrics();
        return TypedValue.applyDimension(TypedValue.COMPLEX_UNIT_DIP, dip, displayMetrics);
    }

    public static int dpToP(Resources paramResources, int paramInt) {
        return (int) TypedValue.applyDimension(TypedValue.COMPLEX_UNIT_DIP, paramInt,
                paramResources.getDisplayMetrics());
    }

    /**
     * @param context
     * @param complexUnit {@link TypedValue#COMPLEX_UNIT_DIP}
     *                    {@link TypedValue#COMPLEX_UNIT_SP}
     * @return
     */
    public static float toDimension(float dip, Context context, int complexUnit) {
        DisplayMetrics displayMetrics = context.getResources().getDisplayMetrics();
        return TypedValue.applyDimension(complexUnit, dip, displayMetrics);
    }

    /**
     * Get screen width
     *
     * @param context
     * @return
     */
    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;
    }

    /**
     * Get screen height
     *
     * @param context
     * @return
     */
    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;
    }


    /**
     * 判断是否为平板
     *
     * @return
     */
    public static boolean isPad(Context context) {

        DisplayMetrics dm = context.getResources().getDisplayMetrics();
        int width = dm.widthPixels;
        int height = dm.heightPixels;
        double x = Math.pow(width, 2);
        double y = Math.pow(height, 2);
        double diagonal = Math.sqrt(x + y);

        int dens = dm.densityDpi;
        double screenInches = diagonal / (double) dens;
        // 大于6尺寸则为Pad
        if (screenInches >= 6.0) {
            return true;
        }
        return false;

    }

    /**
     * 获得状态栏的高度
     *
     * @param context
     * @return
     */
    public static int getStatusHeight(Context context) {

        int statusHeight = -1;
        try {
            Class<?> clazz = Class.forName("com.android.internal.R$dimen");
            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
     *
     * @param activity
     * @return
     */
    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 bp = null;
        bp = Bitmap.createBitmap(bmp, 0, 0, width, height);
        view.destroyDrawingCache();
        return bp;

    }

    /**
     * 获取当前屏幕截图，不包含状态栏
     *
     * @param activity
     * @return
     */
    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 bp = null;
        bp = Bitmap.createBitmap(bmp, 0, statusBarHeight, width, height - statusBarHeight);
        view.destroyDrawingCache();
        return bp;

    }

    public static final int getHeightInPx(Context context) {
        final int height = context.getResources().getDisplayMetrics().heightPixels;
        return height;
    }

    public static final int getWidthInPx(Context context) {
        final int width = context.getResources().getDisplayMetrics().widthPixels;
        return width;
    }

    public static final int getHeightInDp(Context context) {
        final float height = context.getResources().getDisplayMetrics().heightPixels;
        int heightInDp = px2dip(context, height);
        return heightInDp;
    }

    public static final int getWidthInDp(Context context) {
        final float height = context.getResources().getDisplayMetrics().heightPixels;
        int widthInDp = px2dip(context, height);
        return widthInDp;
    }

    public static int dip2px(Context context, float dpValue) {
        final float scale = context.getResources().getDisplayMetrics().density;
        return (int) (dpValue * scale + 0.5f);
    }

    public static int px2dip(Context context, float pxValue) {
        final float scale = context.getResources().getDisplayMetrics().density;
        return (int) (pxValue / scale + 0.5f);
    }

    public static int px2sp(Context context, float pxValue) {
        final float scale = context.getResources().getDisplayMetrics().density;
        return (int) (pxValue / scale + 0.5f);
    }

    public static int sp2px(Context context, float spValue) {
        final float scale = context.getResources().getDisplayMetrics().density;
        return (int) (spValue * scale + 0.5f);
    }


}
