package com.fuban.user.views.textbanner.utils;

import android.app.Activity;
import android.content.Context;
import android.util.DisplayMetrics;

import java.util.List;

public class DisplayUtils {

    public static <T> boolean notEmpty(List<T> list) {
        return !isEmpty(list);
    }

    public static <T> boolean isEmpty(List<T> list) {
        if (list == null || list.size() == 0) {
            return true;
        }
        return false;
    }

    // 将px值转换为dip或dp值
    public static int px2dip(Context context, float pxValue) {
        final float scale = context.getResources().getDisplayMetrics().density;
        return (int) (pxValue / scale + 0.5f);
    }

    // 将dip或dp值转换为px值
    public static int dip2px(Context context, float dipValue) {
        final float scale = context.getResources().getDisplayMetrics().density;
        return (int) (dipValue * scale + 0.5f);
    }

    // 将px值转换为sp值
    public static int px2sp(Context context, float pxValue) {
        final float fontScale = context.getResources().getDisplayMetrics().scaledDensity;
        return (int) (pxValue / fontScale + 0.5f);
    }

    // 将sp值转换为px值
    public static int sp2px(Context context, float spValue) {
        final float fontScale = context.getResources().getDisplayMetrics().scaledDensity;
        return (int) (spValue * fontScale + 0.5f);
    }

    // 屏幕宽度（像素）
    public static int getWindowWidth(Activity context) {
        DisplayMetrics metric = new DisplayMetrics();
        context.getWindowManager().getDefaultDisplay().getMetrics(metric);
        return metric.widthPixels;
    }

    // 屏幕高度（像素）
    public static int getWindowHeight(Activity context) {
        DisplayMetrics metric = new DisplayMetrics();
        context.getWindowManager().getDefaultDisplay().getMetrics(metric);
        return metric.heightPixels;
    }

    // 根据Unicode编码判断中文汉字和符号
    private static boolean isChinese(char c) {
        Character.UnicodeBlock ub = Character.UnicodeBlock.of(c);
        if (ub == Character.UnicodeBlock.CJK_UNIFIED_IDEOGRAPHS || ub == Character.UnicodeBlock.CJK_COMPATIBILITY_IDEOGRAPHS
                || ub == Character.UnicodeBlock.CJK_UNIFIED_IDEOGRAPHS_EXTENSION_A || ub == Character.UnicodeBlock.CJK_UNIFIED_IDEOGRAPHS_EXTENSION_B
                || ub == Character.UnicodeBlock.CJK_SYMBOLS_AND_PUNCTUATION || ub == Character.UnicodeBlock.HALFWIDTH_AND_FULLWIDTH_FORMS
                || ub == Character.UnicodeBlock.GENERAL_PUNCTUATION) {
            return true;
        }
        return false;
    }

    // 判断中文汉字和符号
    public static boolean isChinese(String strName) {
        char[] ch = strName.toCharArray();
        for (int i = 0; i < ch.length; i++) {
            char c = ch[i];
            if (isChinese(c)) {
                return true;
            }
        }
        return false;
    }

}