悬停时的SVG过滤器标签 [英] SVG Filter tag on hover

问题描述

 < defs>我试图通过这个过滤器设置一个SVG动画。 
< filter id =green-fillx =0％y =0％> 
< feFlood flood-color =＃fff/> 
< feOffset dx =85> 
 < / feOffset> 
  < / filter> 
< / defs> 
  

当我试图在悬停状态下触发动画时，出现真正的问题
it看起来这个动画是在加载页面时发生的。

我尝试在悬停时使用纯css添加过滤器，但没有任何机会：

  .item：hover .svg-fill path {filter：url（＃green-fill）; } 
  

另外我发现可以用Javascript来完成，但是再次没有任何成功。 p>

这里是codepen示例： CodePen

解决方案

您可以在animate元素上设置 begin =indefinite ，然后调用该元素上的.beginElement（）函数来启动它。

function startAnimation（）{anim.beginElement（）}

path {filter：url（＃green-fill）;}

< svg data-name =Layer 1xmlns =http ：//www.w3.org/2000/svgviewBox =0 0 30 25.54width =100pxheight =100px> < DEFS> < filter id =green-fillx =0％y =0％> < feFlood flood-color =＃fff/> < feOffset dx =0> < animate id =animattributeName =dxfrom =0to =85dur =5sbegin =indefinite/> < / feOffset> < feComposite operator =inin2 =SourceGraphic/> < feComposite operator =overin2 =SourceGraphic/> < /滤光器> < / DEFS> <路径填充=＃ea0097d =M12.41,4.67a8,8,0,0,0-7.89,8.18A8,8,0,0,0,12.41,21a7.64,7.64,0， 0,0,5-1.83l6.22-6.34L17.39,6.5a7.73,7.73,0,0,0-5-1.83m0,20.95A12.61,12.61,0,0,1,0,12.85 ，12.61,12.61,0,0,1,12.41.07a12.21,12.21,0,0,1,8,3l0.14,0.13L30,12.85l-9.62,9.79a12.23,12.23,0,0， 1-8,3/>< / svg>< button onclick =startAnimation（）> start动画< / button>

I am trying to animate an SVG which I managed to do via this filter:

<defs>
<filter id="green-fill" x="0%" y="0%">
  <feFlood flood-color="#fff"/>
  <feOffset dx="85">
    <animate attributeName="dx" from="0" to="85" dur="5s"/>
    </feOffset>
  <feComposite operator="in" in2="SourceGraphic"/>
  <feComposite operator="over" in2="SourceGraphic"/>
  </filter>
</defs>

my real problem comes when I am trying to trigger the animation on hover state, it seems that the animation is taking place when the page is load.

I tried by adding the filter on hover with pure css but no chance:

 .item:hover .svg-fill path{ filter:url(#green-fill); }

Also I find that can be done with Javascript but again didn't had any success.

here is the codepen example:CodePen

解决方案

you can set begin="indefinite" on your animate element, and then call the .beginElement() function on that element whenever you want to start it.

function startAnimation() {
  anim.beginElement()
}

path {
  filter: url(#green-fill);
}

<svg data-name="Layer 1" xmlns="http://www.w3.org/2000/svg" viewBox="0 0 30 25.54" width="100px" height="100px">
  <defs>
    <filter id="green-fill" x="0%" y="0%">
      <feFlood flood-color="#fff" />
      <feOffset dx="0">
        <animate id="anim" attributeName="dx" from="0" to="85" dur="5s" begin="indefinite" />
      </feOffset>
      <feComposite operator="in" in2="SourceGraphic" />
      <feComposite operator="over" in2="SourceGraphic" />
    </filter>
  </defs>

  <path fill="#ea0097" d="M12.41,4.67a8,8,0,0,0-7.89,8.18A8,8,0,0,0,12.41,21a7.64,7.64,0,0,0,5-1.83l6.22-6.34L17.39,6.5a7.73,7.73,0,0,0-5-1.83m0,20.95A12.61,12.61,0,0,1,0,12.85,12.61,12.61,0,0,1,12.41.07a12.21,12.21,0,0,1,8,3l0.14,0.13L30,12.85l-9.62,9.79a12.23,12.23,0,0,1-8,3"
  />
</svg>
<button onclick="startAnimation()">start Animation</button>

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