css - 如何向圆形图像添加 Google One 风格的多色边框？

Question

我正在为我大学的 Google DSC 俱乐部创建一个网站，我想添加 Google One style border到网站上的圆形投资组合图像。

我想知道如何使用 CSS 来完成此任务，但预渲染 Photoshop 或 Illustrator 技巧也可以。

我尝试修改 this answer 中给出的一些代码，但我没能达到完美的效果。

.test {
  margin: 25px 0;
  width: 200px;
  height: 200px;
  border-radius: 50%;
  border: 12px solid transparent;
  background-size: 100% 100%, 50% 50%, 50% 50%, 50% 50%, 50% 50%;
  background-repeat: no-repeat;
  background-image: linear-gradient(white, white), 
                    linear-gradient(30deg, #ea4335 36%, #4285f4 30%),
                    linear-gradient(120deg, #4285f4 36%, #34a853 30%),
                    linear-gradient(300deg, #fbbc04 36%, #ea4335 30%),
                    linear-gradient(210deg, #34a853 36%, #fbbc04 30%);
  background-position: center center, left top, right top, left bottom, right bottom;
  background-origin: content-box, border-box, border-box, border-box, border-box;
  background-clip: content-box, border-box, border-box, border-box, border-box;
  transform: rotate(90deg);
}

<div class="test"></div>

如您所见，边框颜色未正确对齐。

有什么方法可以使用更简单的方法来完成此任务吗？

谢谢!

Answer 1

SVG 选项

要创建圆的多色扇形，请使用 stroke-dasharray

计算线条和空格的长度:

对于半径R = 100px周长 = 2 * 3.1415 * 100 = 628.3 px

为了使直线等于圆的四分之一，我们计算属性 stroke-dasharray

628.3 / 4 = 157.075空间将为圆长度的 3/4 = 471px

但是由于蓝色、红色和绿色部分的长度略大于四分之一圆，因此我们添加了此差异。笔划-dasharray =“183.255 445.045”

stroke-dashoffset = "78.54"将扇区的开头移动圆周的 1/8

一个扇区的示例

<svg version="1.1" xmlns="http://www.w3.org/2000/svg" 
    xmlns:xlink="http://www.w3.org/1999/xlink"
	     width="250" height="250" viewBox="0 0 250 250" > 
		 
<circle cx="125" cy="125" r="100" fill="none" stroke="#d3d3d3" stroke-width="8" />		 
 		 
<circle id="blue" cx="125" cy="125" r="100" fill="none" stroke="#4285F4" stroke-width="8" stroke-dasharray="183.255 445.045" stroke-dashoffset="78.54" /> 
 
 </svg>	 

我们还为其他颜色扇区设置了属性。

<svg version="1.1" xmlns="http://www.w3.org/2000/svg" 
    xmlns:xlink="http://www.w3.org/1999/xlink"
	     width="250" height="250" viewBox="0 0 250 250" >  

		 
<circle id="blue" cx="125" cy="125" r="100" fill="none" stroke="#4285F4" stroke-width="8" stroke-dasharray="183.255 445.045" stroke-dashoffset="78.54" /> 

  <circle id="red" cx="125" cy="125" r="100" fill="none" stroke="#EA4335" stroke-width="8" stroke-dasharray="203.255 425.045" stroke-dashoffset="281.9" /> 

  <circle id="gold" cx="125" cy="125" r="100" fill="none" stroke="#FABB04" stroke-width="8" stroke-dasharray="78.54 549.76" stroke-dashoffset="340	" /> 
 
   <circle id="green" cx="125" cy="125" r="100" fill="none" stroke="#34A852" stroke-width="8" stroke-dasharray="183.255 445.045" stroke-dashoffset="525.225	" /> 
 
 </svg>	 

添加图像并使用蒙版将其剪切以适合圆圈

<svg version="1.1" xmlns="http://www.w3.org/2000/svg" 
    xmlns:xlink="http://www.w3.org/1999/xlink"
	     width="40%" height="40%" viewBox="0 0 250 250" >  

 <defs> 
  <mask id="msk1"> 
    <rect width="100%" height="100%" fill="black" />
   <circle cx="125" cy="125" r="100" fill="white" stroke-width="20" stroke="black"  />
  </mask>
</defs>

 <image xlink:href="/image/UsGg5.jpg" x="0" y="23" width="100%" height="100%" mask="url(#msk1)" />	
		 
<circle id="blue" cx="125" cy="125" r="100" fill="none" stroke="#4285F4" stroke-width="8" stroke-dasharray="183.2 445.1" stroke-dashoffset="78.54" /> 

  <circle id="red" cx="125" cy="125" r="100" fill="none" stroke="#EA4335" stroke-width="8" stroke-dasharray="203.3 425.1" stroke-dashoffset="281.9" /> 

  <circle id="gold" cx="125" cy="125" r="100" fill="none" stroke="#FABB04" stroke-width="8" stroke-dasharray="80 549.7" stroke-dashoffset="345	" /> 
 
   <circle id="green" cx="125" cy="125" r="100" fill="none" stroke="#34A852" stroke-width="8" stroke-dasharray="183.2 445.1" stroke-dashoffset="525.2	" /> 
 
 </svg>	 

该解决方案是自适应的，并且在所有现代浏览器中的工作方式相同，包括 IE11 , Edge

更新

OP 没有询问，但也许这个补充会对他或其他人有用。

SVG+CSS 动画

为了让您的应用程序更加有趣，我添加了动画选项。

#1。围绕图像旋转笔划的动画

• 用组标签将所有形成五彩线的圆圈包裹起来 <g>

• fill ="none"替换为 fill ="transparent"为了 当您将鼠标悬停在整个圆圈上时播放动画

.student {
background: rgb(238,174,202);
background: linear-gradient(90deg, rgba(238,174,202,1) 0%, rgba(148,208,233,1) 100%);
}
.container {
display: inline-block;
width:25%;
}
#gr1 {
transform-origin:125px 125px;
  -webkit-transition: -webkit-transform 1s ease-in-out;
          transition:         transform 1s ease-in-out;
}

#gr1:hover {
  -webkit-transform: rotate(720deg);
          transform: rotate(720deg);
}

<div class="student"> 
 <div class="container">
<svg version="1.1" xmlns="http://www.w3.org/2000/svg" 
    xmlns:xlink="http://www.w3.org/1999/xlink"
	      viewBox="0 0 250 250" >  

 <defs> 
  <mask id="msk1"> 
    <rect width="100%" height="100%" fill="black" />
   <circle cx="125" cy="125" r="100" fill="white" stroke-width="20" stroke="black"  />
  </mask>
</defs>

 <image id="img" xlink:href="/image/IzNqO.jpg" x="0" y="24" width="100%" height="100%" mask="url(#msk1)" />	

<g id="gr1"> 
<circle id="blue" cx="125" cy="125" r="100" fill="transparent" stroke="#4285F4" stroke-width="8" stroke-dasharray="183.2 445.1" stroke-dashoffset="78.54" /> 

  <circle id="red" cx="125" cy="125" r="100" fill="none" stroke="#EA4335" stroke-width="8" stroke-dasharray="203.3 425.1" stroke-dashoffset="281.9" /> 

  <circle id="gold" cx="125" cy="125" r="100" fill="none" stroke="#FABB04" stroke-width="8" stroke-dasharray="80 549.7" stroke-dashoffset="345	" /> 
 
   <circle id="green" cx="125" cy="125" r="100" fill="none" stroke="#34A852" stroke-width="8" stroke-dasharray="183.2 445.1" stroke-dashoffset="525.2	" /> 
 </g>
 </svg>	
</div>  
 
<div class="container">
<svg version="1.1" xmlns="http://www.w3.org/2000/svg" 
    xmlns:xlink="http://www.w3.org/1999/xlink"
	      viewBox="0 0 250 250" >  

 <defs> 
  <mask id="msk1"> 
    <rect width="100%" height="100%" fill="black" />
   <circle cx="125" cy="125" r="100" fill="white" stroke-width="20" stroke="black"  />
  </mask>
</defs>

 <image id="img" xlink:href="/image/d4AlZ.jpg" x="0" y="25" width="100%" height="100%" mask="url(#msk1)" />	
<g id="gr1">		 
<circle id="blue" cx="125" cy="125" r="100" fill="transparent" stroke="#4285F4" stroke-width="8" stroke-dasharray="183.2 445.1" stroke-dashoffset="78.54" /> 

  <circle id="red" cx="125" cy="125" r="100" fill="none" stroke="#EA4335" stroke-width="8" stroke-dasharray="203.3 425.1" stroke-dashoffset="281.9" /> 

  <circle id="gold" cx="125" cy="125" r="100" fill="none" stroke="#FABB04" stroke-width="8" stroke-dasharray="80 549.7" stroke-dashoffset="345	" /> 
 
   <circle id="green" cx="125" cy="125" r="100" fill="none" stroke="#34A852" stroke-width="8" stroke-dasharray="183.2 445.1" stroke-dashoffset="525.2	" /> 
</g> 
 </svg>	 
 </div> 
 <div class="container">
 <svg version="1.1" xmlns="http://www.w3.org/2000/svg" 
    xmlns:xlink="http://www.w3.org/1999/xlink"
	      viewBox="0 0 250 250" >  

 <defs> 
  <mask id="msk1"> 
    <rect width="100%" height="100%" fill="black" />
   <circle cx="125" cy="125" r="100" fill="white" stroke-width="20" stroke="black"  />
  </mask>
</defs>

 <image id="img" xlink:href="/image/YG6VN.png" x="0" y="25" width="100%" height="100%" mask="url(#msk1)" />	
<g id="gr1">	 
<circle id="blue" cx="125" cy="125" r="100" fill="transparent" stroke="#4285F4" stroke-width="8" stroke-dasharray="183.2 445.1" stroke-dashoffset="78.54" /> 

  <circle id="red" cx="125" cy="125" r="100" fill="none" stroke="#EA4335" stroke-width="8" stroke-dasharray="203.3 425.1" stroke-dashoffset="281.9" /> 

  <circle id="gold" cx="125" cy="125" r="100" fill="none" stroke="#FABB04" stroke-width="8" stroke-dasharray="80 549.7" stroke-dashoffset="345	" /> 
 
   <circle id="green" cx="125" cy="125" r="100" fill="none" stroke="#34A852" stroke-width="8" stroke-dasharray="183.2 445.1" stroke-dashoffset="525.2	" /> 
</g> 
   </svg>	 
  </div> 
 </div>

2.# 悬停时图像旋转的动画

CSS规则用于实现图像的旋转

#img {
transform-origin:125px 125px;
  -webkit-transition: -webkit-transform 1s ease-in-out;
          transition:         transform 1s ease-in-out;
}

#img:hover {
  -webkit-transform: rotate(360deg);
          transform: rotate(360deg);
}

.student {

background: rgb(238,174,202);
background: linear-gradient(90deg, rgba(238,174,202,1) 0%, rgba(148,208,233,1) 100%);
}
.container {
display: inline-block;
width:25%;
}
#img {
transform-origin:125px 125px;
  -webkit-transition: -webkit-transform 1s ease-in-out;
          transition:         transform 1s ease-in-out;
}

#img:hover {
  -webkit-transform: rotate(360deg);
          transform: rotate(360deg);
}

<div class="student"> 
 <div class="container">
<svg version="1.1" xmlns="http://www.w3.org/2000/svg" 
    xmlns:xlink="http://www.w3.org/1999/xlink"
	      viewBox="0 0 250 250" >  

 <defs> 
  <mask id="msk1"> 
    <rect width="100%" height="100%" fill="black" />
   <circle cx="125" cy="125" r="100" fill="white" stroke-width="20" stroke="black"  />
  </mask>
</defs>

 <image id="img" xlink:href="/image/IzNqO.jpg" x="0" y="24" width="100%" height="100%" mask="url(#msk1)" />	
		 
<circle id="blue" cx="125" cy="125" r="100" fill="none" stroke="#4285F4" stroke-width="8" stroke-dasharray="183.2 445.1" stroke-dashoffset="78.54" /> 

  <circle id="red" cx="125" cy="125" r="100" fill="none" stroke="#EA4335" stroke-width="8" stroke-dasharray="203.3 425.1" stroke-dashoffset="281.9" /> 

  <circle id="gold" cx="125" cy="125" r="100" fill="none" stroke="#FABB04" stroke-width="8" stroke-dasharray="80 549.7" stroke-dashoffset="345	" /> 
 
   <circle id="green" cx="125" cy="125" r="100" fill="none" stroke="#34A852" stroke-width="8" stroke-dasharray="183.2 445.1" stroke-dashoffset="525.2	" /> 
 
 </svg>	
</div>  
 
<div class="container">
<svg version="1.1" xmlns="http://www.w3.org/2000/svg" 
    xmlns:xlink="http://www.w3.org/1999/xlink"
	      viewBox="0 0 250 250" >  

 <defs> 
  <mask id="msk1"> 
    <rect width="100%" height="100%" fill="black" />
   <circle cx="125" cy="125" r="100" fill="white" stroke-width="20" stroke="black"  />
  </mask>
</defs>

 <image id="img" xlink:href="/image/d4AlZ.jpg" x="0" y="25" width="100%" height="100%" mask="url(#msk1)" />	
		 
<circle id="blue" cx="125" cy="125" r="100" fill="none" stroke="#4285F4" stroke-width="8" stroke-dasharray="183.2 445.1" stroke-dashoffset="78.54" /> 

  <circle id="red" cx="125" cy="125" r="100" fill="none" stroke="#EA4335" stroke-width="8" stroke-dasharray="203.3 425.1" stroke-dashoffset="281.9" /> 

  <circle id="gold" cx="125" cy="125" r="100" fill="none" stroke="#FABB04" stroke-width="8" stroke-dasharray="80 549.7" stroke-dashoffset="345	" /> 
 
   <circle id="green" cx="125" cy="125" r="100" fill="none" stroke="#34A852" stroke-width="8" stroke-dasharray="183.2 445.1" stroke-dashoffset="525.2	" /> 
 
 </svg>	 
 </div> 
 <div class="container">
 <svg version="1.1" xmlns="http://www.w3.org/2000/svg" 
    xmlns:xlink="http://www.w3.org/1999/xlink"
	      viewBox="0 0 250 250" >  

 <defs> 
  <mask id="msk1"> 
    <rect width="100%" height="100%" fill="black" />
   <circle cx="125" cy="125" r="100" fill="white" stroke-width="20" stroke="black"  />
  </mask>
</defs>

 <image id="img" xlink:href="/image/YG6VN.png" x="0" y="25" width="100%" height="100%" mask="url(#msk1)" />	
		 
<circle id="blue" cx="125" cy="125" r="100" fill="none" stroke="#4285F4" stroke-width="8" stroke-dasharray="183.2 445.1" stroke-dashoffset="78.54" /> 

  <circle id="red" cx="125" cy="125" r="100" fill="none" stroke="#EA4335" stroke-width="8" stroke-dasharray="203.3 425.1" stroke-dashoffset="281.9" /> 

  <circle id="gold" cx="125" cy="125" r="100" fill="none" stroke="#FABB04" stroke-width="8" stroke-dasharray="80 549.7" stroke-dashoffset="345	" /> 
 
   <circle id="green" cx="125" cy="125" r="100" fill="none" stroke="#34A852" stroke-width="8" stroke-dasharray="183.2 445.1" stroke-dashoffset="525.2	" /> 
 
   </svg>	 
  </div> 
 </div>