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2024-09-27 02:06:13 +08:00
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117
历届学生/吴欣阳/项目开发/练习项目/课程练习/6.17/预览/css/previewImage.css Normal file
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body,
ul,
li,
a,
p,
h1,
h2,
h3,
h4,
h5,
h6 {
margin: 0;
padding: 0;
list-style: none;
text-decoration: none;
}
.smallImg {
width: 100px;
}
.hidden {
display: none;
}
.zhezhao {
width: 100vw;
height: 100vh;
background: #000;
position: fixed;
left: 0;
right: 0;
top: 0;
bottom: 0;
z-index: 998;
opacity: .5;
}
.preview {
position: fixed;
left: 0;
right: 0;
top: 0;
bottom: 0;
z-index: 999;
display: flex;
justify-content: center;
}
.closed {
width: 40px;
height: 40px;
font-size: 24px;
color: #fff;
background-color: #606266;
text-align: center;
line-height: 35px;
position: absolute;
right: 10px;
top: 10px;
border-radius: 100%;
z-index: 999;
}
.action .d {
top: 50%;
transform: translateY(-50%);
width: 44px;
height: 44px;
font-size: 24px;
color: #fff;
background-color: #606266;
border-color: #fff;
position: absolute;
text-align: center;
line-height: 40px;
border-radius: 100%;
z-index: 999;
}
.left {
left: 40px;
}
.right {
right: 40px;
}
.operation {
left: 50%;
bottom: 30px;
transform: translateX(-50%);
width: 282px;
height: 44px;
padding: 0 23px;
background-color: #606266;
border-color: #fff;
position: absolute;
border-radius: 22px;
display: flex;
justify-content: space-around;
align-items: center;
}
.operation li i {
font-size: 23px;
color: #fff;
}
.xz {
display: inline-block;
transform: rotateY(180deg);
}
.mainImg {
height: 100%;
}

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历届学生/吴欣阳/项目开发/练习项目/课程练习/6.17/预览/imdex.html Normal file
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<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta http-equiv="X-UA-Compatible" content="IE=edge">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>Documen</title>
<link rel="stylesheet" href="./css/previewImage.css">
<link rel="stylesheet" href="http://at.alicdn.com/t/font_2576965_pg56sl6byua.css">
</head>
<body>
<div class="list"></div>
</body>
<script src="./js/previewImage.js"></script>
<script>
var imgArr = [
'./img/11.png',
'./img/12.jpg',
'./img/13.jpg',
'./img/14.jpg',
'./img/15.png',
'./img/16.jpg',
'./img/17.jpg',
]
imgArr.forEach(function(v) {
document.querySelector(".list").innerHTML += `<img width="100" src="${v}"/>`
});
document.querySelectorAll(".list img").forEach(function(v, i) {
v.onclick = function() {
var c = new PreviewImage({
image: imgArr,
showIndex: i
});
c = null
}
})
</script>
</html>

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历届学生/吴欣阳/项目开发/练习项目/课程练习/6.17/预览/js/previewImage.js Normal file
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class PreviewImage {
body = this.$("body");
option = {};
isBackMove = false;
x1 = 0;
y1 = 0;
l = 0;
t = 0;
constructor(option) {
if (!option.hasOwnProperty("image")) {
throw new Error("参数image缺少，请检查")
}
if (!option.hasOwnProperty("showIndex")) {
throw new Error("参数showIndex缺少，请检查")
}
this.option = option
//调用的方法
this.created();
this.BindClose();
this.BindPrevious();
this.BindNext();
this.BindSuoXiao();
this.BindFangDa();
this.BindFullScreen();
this.BindXuanZhuan();
this.MouseEvent();
}
created() { //插入元素
this.body.insertAdjacentHTML("beforeend", `<div class="previewImage">
<div class="zhezhao"></div>
<div class="preview">
<div class="closed">x</div>
<div class="action">
<div class="left d">&lt;</div>
<div class="right d">&gt;</div>
</div>
<img class="mainImg" style="transform: scale(1) rotate(0deg);margin-left: 0;margin-top: 0;"
src="${this.option.image[this.option.showIndex]}" alt="">
<ul class="operation">
<li>
<i class="iconfont icon-suoxiao suoxiao"></i>
</li>
<li>
<i class="iconfont icon-fangda fangda"></i>
</li>
<li>
<i class="iconfont icon-fullscreen fullscreen"></i>
</li>
<li class="xz">
<i class="iconfont icon-shuaxin leftshuaxin"></i>
</li>
<li>
<i class="iconfont icon-shuaxin rightshuaxin"></i>
</li>
</ul>
</div>
</div>`)
}
BindSuoXiao() {
this.$(".suoxiao").onclick = () => {
var value = this.Scale() - 0.2;
if (value != 0) {
this.$(".mainImg").style.transform = `scale(${value}) rotate(${this.Rotate()}deg)`
}
}
}
BindFullScreen() {
this.$(".fullscreen").onclick = () => {
if (this.$(".fullscreen").classList.contains("icon-fullscreen")) {
this.$(".fullscreen").classList.remove("icon-fullscreen")
this.$(".fullscreen").classList.add("icon-suoxiao1")
this.$(".mainImg").style = `
transform: scale(2) rotate(${this.Rotate()}deg);
margin-left: 0;
margin-top: 0;
`
} else {
this.$(".fullscreen").classList.remove("icon-suoxiao1")
this.$(".fullscreen").classList.add("icon-fullscreen")
this.$(".mainImg").style = `
transform: scale(1) rotate(0deg);
margin-left: 0;
margin-top: 0;
`
}
}
}
BindFangDa() {
this.$(".fangda").onclick = () => {
this.$(".mainImg").style.transform = `scale(${this.Scale() + 0.2}) rotate(${this.Rotate()}deg)`
}
}
BindXuanZhuan() {
this.$(".leftshuaxin").onclick = () => {
this.xuanzhuan(-90)
}
this.$(".rightshuaxin").onclick = () => {
this.xuanzhuan(90)
}
}
MouseEvent() {
document.onmousewheel = (e) => {
if (e.wheelDelta == 210) {
this.$(".fangda").onclick()
} else {
this.$(".suoxiao").onclick()
}
}
this.$(".mainImg").onmousedown = (e) => {
e.preventDefault()
this.isBackMove = true
this.x1 = e.clientX;
this.y1 = e.clientY;
this.l = parseInt(this.$(".mainImg").style.marginLeft);
this.t = this.$(".mainImg").offsetTop;
this.ImgMove(".mainImg")
}
this.$(".mainImg").onmouseleave = () => {
console.log("绑定鼠标移动事件");
if (this.isBackMove) {
this.ImgMove(".preview")
}
}
this.$(".preview").onmouseup = (ev) => {
console.log("鼠标在背景层上松开");
this.isBackMove = false
this.$(".mainImg").onmousemove = null;
this.$(".preview").onmousemove = null;
}
this.$(".mainImg").onmouseup = (ev) => {
console.log("鼠标在图片上松开");
this.$(".mainImg").onmousemove = null;
this.$(".preview").onmousemove = null;
}
}
ImgMove(className) {
this.$(className).onmousemove = (ev) => {
var x2 = ev.clientX;
var y2 = ev.clientY;
var x = x2 - this.x1;
var y = y2 - this.y1;
var lt = y + this.t;
var ls = x + this.l;
this.$(".mainImg").style.marginLeft = ls + 'px';
this.$(".mainImg").style.marginTop = lt + 'px';
}
}
xuanzhuan(offset) {
this.$(".mainImg").style.transform = `scale(${this.Scale()}) rotate(${this.Rotate() + offset}deg)`
}
BindClose() {
this.$(".closed").onclick = () => {
this.body.removeChild(this.$(".previewImage"))
}
}
BindPrevious() {
this.$(".left").onclick = () => {
this.option.showIndex -= 1;
if (this.option.showIndex < 0) {
this.option.showIndex = this.option.image.length - 1
}
this.$(".mainImg").src = this.option.image[this.option.showIndex]
}
}
BindNext() {
this.$(".right").onclick = () => {
this.option.showIndex += 1;
if (this.option.showIndex > this.option.image.length - 1) {
this.option.showIndex = 0
}
this.$(".mainImg").src = this.option.image[this.option.showIndex]
}
}
Scale() {
return Number(this.$(".mainImg").style.transform.match(/scale\(([\s\S]*?)\) /)[1])
}
Rotate() {
return Number(this.$(".mainImg").style.transform.match(/rotate\(([\s\S]*?)deg\)/)[1])
}
//封装
$(className) {
return document.querySelector(className)
}
}