package com.android.app_base.utils;

import android.app.Activity;
import android.app.Application;
import android.content.ComponentCallbacks;
import android.content.Context;
import android.content.res.Configuration;
import android.util.DisplayMetrics;

import androidx.annotation.DimenRes;
import androidx.annotation.NonNull;
import androidx.annotation.Nullable;

import com.android.app_base.base.BaseApplication;

/**
 * @author Ljj
 * @date 2023.03.13. 17:40
 * @desc 屏幕尺寸转化工具类
 */
public class ScreenSizeUtils {

    /**
     * 计算当前的SP的值
     * @param context
     * @param spSize :R.dimen.sp_16
     * @return
     */
    public static int getSP(Context context, @DimenRes int spSize){

        float pxValue = context.getResources().getDimension(spSize);//获取对应资源文件下的sp值
        //将px值转换成sp值
        return px2sp(context, pxValue);
    }

    /**
     * 计算当前的DP的值
     * @param context
     * @param dpSize :R.dimen.dp_16
     * @return
     */
    public  static int getDP(Context context,@DimenRes int dpSize){
        float pxValue = context.getResources().getDimension(dpSize);//获取对应资源文件下的sp值
        //将px值转换成dp值
        return px2dip(context, pxValue);
    }

    /**
     * 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) {
        if (context == null) {
            return (int) dpValue;
        }
        final float scale = context.getResources().getDisplayMetrics().density;
        return (int) (dpValue * scale + 0.5f);
    }
    public static int dip2px(float dpValue) {
        final float scale = BaseApplication.getInstance().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) {
        if (context == null) {
            return (int) pxValue;
        }
        final float scale = context.getResources().getDisplayMetrics().density;
        return (int) (pxValue / scale + 0.5f);
    }

    /**
     * px转换为sp
     * @param context
     * @param pxValue
     * @return
     */
    public static int px2sp(Context context,float pxValue){
        if (context == null) {
            return (int) pxValue;
        }
        final float scale = context.getResources().getDisplayMetrics().scaledDensity;
        return (int) (pxValue / scale + 0.5f);
    }
    public static int getScreenWidth(Context context){
        DisplayMetrics dm = context.getResources().getDisplayMetrics();
        if(dm != null)return dm.widthPixels;
        return 0;
    }
    public static int getScreenHeight(Context context){
        DisplayMetrics dm = context.getResources().getDisplayMetrics();
        if(dm != null)return dm.heightPixels;
        return 0;
    }

    //今日头条屏幕适配方案
    private static float sNoncompatDensity;
    private static float sNoncompatScaledDensity;
    public static void setCustomDensity(@NonNull Activity activity, @NonNull final Application application){
        final  DisplayMetrics appDisplayMetrics = application.getResources().getDisplayMetrics();

        if (sNoncompatDensity == 0){
            sNoncompatDensity = appDisplayMetrics.density;
            sNoncompatScaledDensity = appDisplayMetrics.scaledDensity;
            application.registerComponentCallbacks(new ComponentCallbacks() {
                @Override
                public void onConfigurationChanged(@NonNull Configuration newConfig) {
                    if (newConfig != null && newConfig.fontScale > 0){
                        sNoncompatScaledDensity = application.getResources().getDisplayMetrics().scaledDensity;
                    }
                }

                @Override
                public void onLowMemory() {

                }
            });
        }
        final float targetDensity = appDisplayMetrics.widthPixels / 360;
        final float targetScaledDensity = targetDensity * (sNoncompatScaledDensity / sNoncompatDensity);
        final int targetDensityDpi = (int) (160*targetDensity);

        appDisplayMetrics.density = targetDensity;
        appDisplayMetrics.scaledDensity = targetScaledDensity;
        appDisplayMetrics.densityDpi = targetDensityDpi;

        final DisplayMetrics activityDisplayMetrics = activity.getResources().getDisplayMetrics();
        activityDisplayMetrics.density = targetDensity;
        activityDisplayMetrics.scaledDensity = targetScaledDensity;
        activityDisplayMetrics.densityDpi = targetDensityDpi;
    }
}