我正在尝试创建一个简单的效果,以便当我将鼠标悬停在最里面的圆圈上时,两个外环会旋转以创建一个很酷的效果。我以为这是一件容易的事,但我似乎无法弄清楚自己在做什么错。当我将鼠标悬停在内圈上时,所有的变化是两个内圈朝着屏幕的右下角移动,而根本没有旋转。我在这里想念什么?谢谢
<application>
<service android:name=".NotificationListener"
android:enabled="true"
android:permission="android.permission.BIND_NOTIFICATION_LISTENER_SERVICE">
<intent-filter>
<action android:name="android.service.notification.NotificationListenerService" />
</intent-filter>
</service>
</application>
NotificationListenerService
答案 0 :(得分:4)
您正在将transform
与平移一起使用,以便使元素居中,然后将旋转替换为导致问题的旋转。相反,您可以调整top
/ left
的值以居中并避免使用变换,这样您将具有所需的旋转度:
.wrapper {
position: relative;
width: 400px;
height: 400px;
margin: auto auto;
background: black;
}
.circle {
width: 100px;
height: 100px;
border-radius: 50%;
background-color: grey;
position: absolute;
top: 50%;
left: 50%;
transform: translate(-50%, -50%);
}
.circle-1 {
width: 108px;
height: 108px;
border-radius: 50%;
background-color: transparent;
position: absolute;
top: calc(50% - 55px);
left: calc(50% - 55px);
border: 2px;
border-style: solid;
border-color: white white white transparent;
transition: 1.5s all ease-in-out;
}
.circle-2 {
width: 118px;
height: 118px;
border-radius: 50%;
background-color: transparent;
position: absolute;
top: calc(50% - 60px);
left:calc(50% - 60px);
border: 2px;
border-style: solid;
border-color: white transparent white white;
transition: 1.5s all ease-in-out;
}
.circle:hover .circle-2 {
transform: rotate(360deg);
}
.circle:hover .circle-1 {
transform: rotate(-360deg);
}
<div class="wrapper">
<div class="circle">
<div class="circle-1"></div>
<div class="circle-2"></div>
</div>
</div>
您还可以使用以下伪元素来简化代码:
* {
box-sizing:border-box;
}
.wrapper {
position: relative;
width: 400px;
height: 400px;
margin: auto;
background: black;
}
.circle {
width: 120px;
height: 120px;
border-radius: 50%;
background:radial-gradient(circle at center, grey 50px,transparent 51px);
position: absolute;
top:50%;
left: 50%;
transform: translate(-50%, -50%);
}
.circle:before,
.circle:after {
content:"";
border-radius: 50%;
position: absolute;
transition: 1.5s all ease-in-out;
border: 2px solid white;
}
.circle:before {
top:0;
left:0;
right:0;
bottom:0;
border-left-color:transparent;
}
.circle:after{
top:5px;
left:5px;
bottom:5px;
right:5px;
border-right-color:transparent;
}
.circle:hover::before {
transform: rotate(360deg);
}
.circle:hover::after {
transform: rotate(-360deg);
}
<div class="wrapper">
<div class="circle">
</div>
</div>
答案 1 :(得分:0)
在transform
中设置:hover
属性将覆盖现有的transform
属性,因此您需要在translate
版本中包括:hover
转换,以避免在设置圆的旋转过程中移动圆。
如果您想对旋转进行动画处理,还需要为旋转变换设置初始值。
另外一个注意事项:使用transition
,旋转只会发生一次。如果您想重复旋转,则需要使用动画(您可以通过取消注释代码段中的animation
行来对此进行注释)。
演示:
.wrapper {
position: relative;
width: 400px;
height: 200px;
margin: auto auto;
background: black;
}
.circle {
width: 100px;
height: 100px;
border-radius: 50%;
background-color: grey;
position: absolute;
top: 50%;
left: 50%;
transform: translate(-50%, -50%);
}
.circle-1 {
width: 108px;
height: 108px;
border-radius: 50%;
background-color: transparent;
position: absolute;
top: 50%;
left: 50%;
transform: translate(-50%, -50%) rotate(0deg);
border: 2px;
border-style: solid;
border-color: white white white transparent;
transition: 1.5s all ease-in-out;
}
.circle-2 {
width: 118px;
height: 118px;
border-radius: 50%;
background-color: transparent;
position: absolute;
top: 50%;
left: 50%;
transform: translate(-50%, -50%) rotate(0deg);
border: 2px;
border-style: solid;
border-color: white transparent white white;
transition: 1.5s all ease-in-out;
}
.circle:hover .circle-2 {
/*animation: spin 1.5s infinite linear;*/
transform: translate(-50%, -50%) rotate(360deg);
}
.circle:hover .circle-1 {
/*animation: spin 1.5s infinite linear reverse;*/
transform: translate(-50%, -50%) rotate(-360deg);
}
@keyframes spin {
0% {
transform: translate(-50%, -50%) rotate(0deg);
}
100% {
transform: translate(-50%, -50%) rotate(360deg);
}
}
<div class="wrapper">
<div class="circle">
<div class="circle-1"></div>
<div class="circle-2"></div>
</div>
</div>