mouse=new list<Mouse>
时间: 2023-12-04 22:02:55 浏览: 18
根据你的描述,你想创建一个名为 "mouse" 的列表(List),其中包含了 Mouse 类的对象。
在 C# 中,你可以使用以下代码创建一个名为 "mouse" 的 List,并指定其元素类型为 Mouse:
```csharp
List<Mouse> mouse = new List<Mouse>();
```
这样就创建了一个空的 List,可以用来存储 Mouse 对象。你可以通过向列表中添加元素来填充它,也可以使用其他列表操作方法来对列表进行操作,例如访问元素、移除元素等。
请注意,为了使用 List 类型,你需要在代码中引入 System.Collections.Generic 命名空间。另外,前提是你已经定义了 Mouse 类型或引入了包含 Mouse 类型定义的命名空间。
相关问题
getSOPImages(this.id).then(res => { console.log(res); let files = res.data; if (files.length > 1) { this.setTimer(); } for (let i = 0; i < files.length; i++) { let file = files[i]; file.url = 'http://' + process.env.VUE_APP_MAPCS_SERVER_IP + ':8080' + file.url; this.list.push(file); } })此代码获取图片数据;<div class="content"> <template> <div class="home"> <div class="box" @mouseout="out" @mouseover="over"> <div style="width: 100%;height: 100%;"> <img v-for="(item,index) in list" :ref="item.id" v-show="listIndex === index" :key="index" :src="item.url" alt="" /> </div> <p class="left1" @click="changePage(prevIndex)"> < </p> <ul> <li :class="{color:index == listIndex}" v-for="(item,index) in list" @click="changePage(index)" :key="index" /> </ul> <p class="right1" @click="changePage(nextIndex)"> > </p> </div> </div> </template> </div>此代码是对图片进行展示,请根据以上代码写出图片双指缩放的功能,要求使用hammer.js+vue2,每行添加注释,还要指明在哪调用这个双指缩放的方法
首先,需要在vue2项目中安装hammer.js库:`npm install --save hammerjs`
然后在需要使用双指缩放功能的组件中引入hammer.js和vue2-hammer库:
```javascript
import Hammer from 'hammerjs'
import VueHammer from 'vue2-hammer'
```
在组件中注册VueHammer:
```javascript
export default {
name: 'ImageDisplay',
directives: { VueHammer },
...
}
```
接下来,在mounted钩子函数中初始化hammer.js,并添加双指缩放功能:
```javascript
mounted() {
// 初始化hammer.js
const mc = new Hammer.Manager(this.$el)
// 添加pan和pinch事件
mc.add(new Hammer.Pan({ threshold: 0, pointers: 0 }))
mc.add(new Hammer.Pinch({ threshold: 0 })).recognizeWith([mc.get('pan')])
// 定义初始状态
let posX = 0
let posY = 0
let scale = 1
let lastScale = 1
let lastPosX = 0
let lastPosY = 0
let maxPosX = 0
let maxPosY = 0
let transform = ''
// 监听pan事件
mc.on('pan', (e) => {
posX = e.deltaX + lastPosX
posY = e.deltaY + lastPosY
maxPosX = Math.ceil((scale - 1) * this.$el.clientWidth / 2)
maxPosY = Math.ceil((scale - 1) * this.$el.clientHeight / 2)
if (posX > maxPosX) {
posX = maxPosX
}
if (posX < -maxPosX) {
posX = -maxPosX
}
if (posY > maxPosY) {
posY = maxPosY
}
if (posY < -maxPosY) {
posY = -maxPosY
}
transform = `translate3d(${posX}px, ${posY}px, 0) scale3d(${scale}, ${scale}, 1)`
this.$refs[this.list[this.listIndex].id].style.transform = transform
})
// 监听pinch事件
mc.on('pinch', (e) => {
scale = Math.max(.5, Math.min(lastScale * (e.scale), 5))
transform = `translate3d(${posX}px, ${posY}px, 0) scale3d(${scale}, ${scale}, 1)`
this.$refs[this.list[this.listIndex].id].style.transform = transform
})
// 监听pan结束事件
mc.on('panend', () => {
lastPosX = posX < maxPosX ? posX : maxPosX
lastPosY = posY < maxPosY ? posY : maxPosY
})
// 监听pinch结束事件
mc.on('pinchend', () => {
lastScale = scale
})
}
```
最后,在需要使用双指缩放功能的模板中添加VueHammer指令:
```html
<template>
<div class="home">
<div class="box" @mouseout="out" @mouseover="over" v-vue-hammer>
<div style="width: 100%;height: 100%;">
<img v-for="(item,index) in list" :ref="item.id" v-show="listIndex === index" :key="index" :src="item.url" alt="" />
</div>
<p class="left1" @click="changePage(prevIndex)"> < </p>
<ul>
<li :class="{color:index == listIndex}" v-for="(item,index) in list" @click="changePage(index)" :key="index" />
</ul>
<p class="right1" @click="changePage(nextIndex)"> > </p>
</div>
</div>
</template>
```
这样,双指缩放功能就被添加到了图片展示组件中。需要注意的是,在mounted钩子函数中添加双指缩放功能时,需要根据实际情况修改transform变量的值,以实现正确的图片缩放和拖动效果。
写一个web作业,登陆注册页面,实时显示时间,轮播图、手风琴效果图、数据删除提示、登陆验证码、鼠标跟随动画、活动倒计时、背景加鼠标移动时的变化,包含背景音乐自动播放,完整代码
好的,以下是一个包含您所需功能的简单 web 作业的完整代码。注意,这只是一个简单示例,您可以根据自己的需求进行修改和扩展。
```html
<!DOCTYPE html>
<html>
<head>
<title>登陆注册页面</title>
<style>
/* 表单样式 */
form {
display: flex;
flex-direction: column;
align-items: center;
}
input[type="text"],
input[type="password"] {
margin-bottom: 10px;
padding: 5px;
width: 200px;
border: none;
border-bottom: 1px solid black;
outline: none;
}
input[type="submit"] {
padding: 5px 10px;
border-radius: 5px;
background-color: #0099cc;
color: white;
border: none;
cursor: pointer;
}
input[type="submit"]:hover {
background-color: #006699;
}
/* 轮播图样式 */
#slider {
position: relative;
width: 600px;
height: 300px;
margin: 0 auto;
}
#slider img {
position: absolute;
left: 0;
top: 0;
opacity: 0;
transition: opacity 1s ease-in-out;
}
#slider img.active {
opacity: 1;
}
/* 手风琴效果图样式 */
#accordion {
display: flex;
justify-content: center;
align-items: center;
height: 200px;
margin-top: 20px;
}
.card {
width: 100px;
height: 200px;
margin: 10px;
background-color: #0099cc;
color: white;
display: flex;
justify-content: center;
align-items: center;
transition: width 0.5s ease-in-out;
cursor: pointer;
}
.card:hover {
width: 150px;
}
/* 数据表格样式 */
table {
border-collapse: collapse;
margin-top: 20px;
}
th,
td {
border: 1px solid black;
padding: 5px;
}
th {
background-color: #0099cc;
color: white;
}
td a {
color: red;
text-decoration: none;
}
td a:hover {
text-decoration: underline;
}
/* 登陆验证码样式 */
#login-captcha {
display: flex;
justify-content: center;
align-items: center;
height: 100px;
margin-top: 20px;
}
#login-captcha img {
margin-right: 10px;
}
#login-captcha input[type="text"] {
width: 100px;
padding: 5px;
border: none;
border-bottom: 1px solid black;
outline: none;
}
/* 鼠标跟随动画样式 */
#mouse-follow {
position: fixed;
width: 100px;
height: 100px;
background-color: #0099cc;
color: white;
border-radius: 50%;
display: flex;
justify-content: center;
align-items: center;
pointer-events: none;
}
/* 活动倒计时样式 */
#countdown {
display: flex;
justify-content: center;
align-items: center;
height: 100px;
margin-top: 20px;
font-size: 30px;
}
/* 背景加鼠标移动时的变化样式 */
body {
background-image: url("bg.jpg");
background-position: center;
background-repeat: no-repeat;
background-size: cover;
}
#background {
position: fixed;
top: 0;
left: 0;
width: 100%;
height: 100%;
background-color: rgba(0, 0, 0, 0.5);
pointer-events: none;
}
/* 背景音乐自动播放样式 */
#audio {
display: none;
}
</style>
</head>
<body>
<h1>登陆</h1>
<form>
<input type="text" placeholder="用户名" />
<input type="password" placeholder="密码" />
<input type="submit" value="登陆" />
</form>
<h1>注册</h1>
<form>
<input type="text" placeholder="用户名" />
<input type="password" placeholder="密码" />
<input type="submit" value="注册" />
</form>
<div id="slider">
<img class="active" src="slider1.jpg" />
<img src="slider2.jpg" />
<img src="slider3.jpg" />
</div>
<div id="accordion">
<div class="card">1</div>
<div class="card">2</div>
<div class="card">3</div>
<div class="card">4</div>
<div class="card">5</div>
</div>
<div id="data-table">
<table>
<tr>
<th>姓名</th>
<th>年龄</th>
<th>操作</th>
</tr>
<tr>
<td>张三</td>
<td>18</td>
<td><a href="#">删除</a></td>
</tr>
<tr>
<td>李四</td>
<td>20</td>
<td><a href="#">删除</a></td>
</tr>
<tr>
<td>王五</td>
<td>22</td>
<td><a href="#">删除</a></td>
</tr>
</table>
</div>
<div id="login-captcha">
<img src="captcha.jpg" />
<input type="text" placeholder="验证码" />
</div>
<div id="mouse-follow">
<span>跟随动画</span>
</div>
<div id="countdown"></div>
<div id="background"></div>
<audio id="audio" src="background-music.mp3" autoplay loop></audio>
<script>
// 实时显示时间
function updateTime() {
const now = new Date();
const timeEl = document.createElement("div");
timeEl.innerText = now.toLocaleString();
document.body.appendChild(timeEl);
}
setInterval(updateTime, 1000);
// 实现轮播图
const slider = document.getElementById("slider");
const images = slider.getElementsByTagName("img");
let index = 0;
setInterval(() => {
images[index].classList.remove("active");
index = (index + 1) % images.length;
images[index].classList.add("active");
}, 3000);
// 实现手风琴效果图
const cards = document.querySelectorAll(".card");
cards.forEach((card) => {
card.addEventListener("mouseover", () => {
card.style.width = "150px";
});
card.addEventListener("mouseout", () => {
card.style.width = "100px";
});
});
// 实现数据删除提示
const deleteLinks = document.querySelectorAll("#data-table a");
deleteLinks.forEach((link) => {
link.addEventListener("click", (event) => {
event.preventDefault();
if (confirm("确定要删除吗?")) {
link.parentElement.parentElement.remove();
}
});
});
// 实现登陆验证码
const captchaInput = document.querySelector(
"#login-captcha input[type='text']"
);
const captchaImage = document.querySelector("#login-captcha img");
captchaImage.addEventListener("click", () => {
captchaImage.src = "captcha.jpg?" + Date.now();
});
// 实现鼠标跟随动画
document.addEventListener("mousemove", (event) => {
const mouseFollow = document.getElementById("mouse-follow");
mouseFollow.style.top = event.clientY + "px";
mouseFollow.style.left = event.clientX + "px";
});
// 实现活动倒计时
const countdown = document.getElementById("countdown");
const targetTime = new Date("2021-12-31T23:59:59");
setInterval(() => {
const now = new Date();
const diff = targetTime - now;
const days = Math.floor(diff / (24 * 60 * 60 * 1000));
const hours = Math.floor((diff % (24 * 60 * 60 * 1000)) / (60 * 60 * 1000));
const minutes = Math.floor((diff % (60 * 60 * 1000)) / (60 * 1000));
const seconds = Math.floor((diff % (60 * 1000)) / 1000);
countdown.innerText = `${days}天${hours}小时${minutes}分钟${seconds}秒`;
}, 1000);
// 实现背景加鼠标移动时的变化
const background = document.getElementById("background");
document.addEventListener("mousemove", (event)