mylomen-server/static/js/event/impl/RSizeEventImpl.js

"use strict";
define(function (require, exports, module) {

    function handle(e) {
        const ctx = require("../../common/ctx");
        let historyScreenW = ctx.screenWidth;
        let curScreenW = ctx.getScreenWidth();
        if (historyScreenW === curScreenW) {
            return
        }

        //调整
        refreshEditFrontSize()
        refreshRootFrontSize();

        //更新
        ctx.screenWidth = ctx.getScreenWidth();
        ctx.screenHeight = ctx.getScreenHeight();
    }

    /**
     * 刷新跟节点 front-size for 全局盒子尺寸
     * @constructor
     */
    function refreshRootFrontSize() {
        const ctx = require("../../common/ctx");
        let designWidth = ctx.designWith;
        let curDoc = document.documentElement;//当前文档的 root 元素
        let curClientW = ctx.getScreenWidth();
        if (!curClientW) {
            curClientW = designWidth;
        }


        let dpr = getDpr();
        //set 1rem = curClientW / designWidth (支持响应式)
        let nowFrontSize = '1px';
        if (ctx.isTablet || ctx.isMobile || ctx.isIOS || ctx.isAndroid) {
            nowFrontSize = (curClientW / designWidth) * dpr + 'px';
        } else {
            nowFrontSize = (curClientW / designWidth) + 'px';
        }

        // curDoc.style.fontSize = dpr * nowFrontSize;
        curDoc.style.fontSize = nowFrontSize;

        console.log("curClientW :", curClientW, "designWidth: ", designWidth, "-> ", nowFrontSize);
        let testDiv = document.getElementById("testDevice");
        testDiv.innerText += "\ncurClientW: " + curClientW;
        testDiv.innerText += "\ndesignWith: " + designWidth;
        testDiv.innerText += "\n1rem =: " + nowFrontSize;
        testDiv.innerText += "\nwindow.screen.width =: " + window.screen.width;
        testDiv.innerText += "\nwindow.screen.height =: " + window.screen.height;
        // testDiv.innerText = testDiv.innerText +
        //     // "\n navigator_userAgent :" + navigator.userAgent.toLocaleLowerCase() +
        //     "\n isMobile :" + /mobi|android|iphone|ipad|ipod/i.test(navigator.userAgent.toLocaleLowerCase()) +
        //     "\n isIOS :" + /iphone|ipad|ipod/.test(window.navigator.userAgent.toLocaleLowerCase()) +
        //     "\n isAndroid :" + /android/.test(window.navigator.userAgent.toLocaleLowerCase()) +
        //     "\n window.width :" + window.innerWidth +
        //     "\n curClientW :" + curClientW +
        //     " \n designWidth: " + designWidth +
        //     "\n 1rem =  " + nowFrontSize;

    }

    function getDpr() {
        //获取屏幕像素密度
        let dpr = window.devicePixelRatio || 1;//当前设置下 物理像素和虚拟像素的比值
        if (!dpr) {
            //devicePixelRatio这个属性是可以获取到设备的dpr
            let devicePixelRatio = window?.devicePixelRatio;
            //判断dpr是否为整数
            let isRegularDpr = devicePixelRatio.toString().match(/^[1-9]\d*$/g)
            if (isRegularDpr) {
                // 对于是整数的dpr，对dpr进行操作
                if (devicePixelRatio >= 3 && (!dpr || dpr >= 3)) {
                    dpr = 3;
                } else if (devicePixelRatio >= 2 && (!dpr || dpr >= 2)) {
                    dpr = 2;
                } else {
                    dpr = 1;
                }
            } else {
                // 其他设备下，仍旧使用1倍的方案
                dpr = 1;
            }
        }
        return dpr;
    }

    function refreshEditFrontSize() {
        const ctx = require("../../common/ctx");
        let curClientW = ctx.getScreenWidth();
        if (!curClientW) {
            return
        }
        //字体尺寸 https://www.shejidaren.com/zihao-daxiao-sheji-bilv.html
        //12～72 px 建议最大字体是48px

        let dpr = getDpr();

        let myEditFrontSize = document.getElementById("myEdit_main");
        if (ctx.isTablet) {
            myEditFrontSize.style.fontSize = ctx.editFrontSize * dpr + 'px';
        } else {
            myEditFrontSize.style.fontSize = ctx.editFrontSize + 'px';
        }

        // console.log("myEditFrontSize: ", myEditFrontSize.style.fontSize);
        let testDiv = document.getElementById("testDevice");
        testDiv.innerText += "\ndpr: " + dpr + "\nmyEditFrontSize: " + myEditFrontSize.style.fontSize;
    }


    //导出
    exports.handle = handle;
    exports.refreshEditFrontSize = refreshEditFrontSize;
});