vue3项目屏幕适配（vite）
import { ref } from "vue";
export default function windowResize() {
// * 指向最外层容器
const screenRef = ref();
// * 定时函数
const timer = ref(0);
// * 默认缩放值
const scale = {
width: "1",
height: "1",
};
// * 设计稿尺寸（px）
const baseWidth = 1920;
const baseHeight = 1080;
// * 需保持的比例（默认1.77778）
const baseProportion = parseFloat((baseWidth / baseHeight).toFixed(5));
const calcRate = () => {
// 当前宽高比
const currentRate = parseFloat(
(window.innerWidth / window.innerHeight).toFixed(5)
);
if (screenRef.value) {
if (currentRate > baseProportion) {
// 表示更宽
scale.width = (
(window.innerHeight * baseProportion) /
baseWidth
).toFixed(5);
scale.height = (window.innerHeight / baseHeight).toFixed(5);
screenRef.value.style.transform = ` scale(${scale.width}, ${scale.height})`;
} else {
// 表示更高
scale.height = (
window.innerWidth /
baseProportion /
baseHeight
).toFixed(5);
scale.width = (window.innerWidth / baseWidth).toFixed(5);
screenRef.value.style.transform = `scale(${scale.width}, ${scale.height})`;
}
}
};
const resize = () => {
clearTimeout(timer.value);
timer.value = window.setTimeout(() => {
calcRate();
}, 200);
};
// 改变窗口大小重新绘制
const windowDraw = () => {
window.addEventListener("resize", resize);
};
// 改变窗口大小重新绘制
const unWindowDraw = () => {
window.removeEventListener("resize", resize);
};
return {
screenRef,
calcRate,
windowDraw,
unWindowDraw,
};
}