在 SVG 组上设置转换原点在 Firefox 中不起作用 [英] Setting transform-origin on SVG group not working in Firefox

问题描述

我在让 transform-origin 在 Firefox 中工作时遇到问题(v.18+，其他版本未测试).Webkit 浏览器按预期工作.我试图将原点设置为组的中心，但到目前为止我尝试过的一切都没有奏效.

I am having an issue with getting transform-origin to work in Firefox (v.18+, other versions not tested). Webkit browsers work as expected. I'm trying to set the origin to the center of the group, but nothing I've tried has worked so far.

代码如下:

#test {
  -webkit-transform-origin: 50% 50%;
  transform-origin: center center;
  -webkit-animation: prop 2s infinite;
  animation: prop 2s infinite;
}

@-webkit-keyframes prop {
  0% {
    -webkit-transform: scale(1, 1);
  }
  20% {
    -webkit-transform: scale(1, .8);
  }
  40% {
    -webkit-transform: scale(1, .6);
  }
  50% {
    -webkit-transform: scale(1, .4);
  }
  60% {
    -webkit-transform: scale(1, .2);
  }
  70% {
    -webkit-transform: scale(1, .4);
  }
  80% {
    -webkit-transform: scale(1, .6);
  }
  90% {
    -webkit-transform: scale(1, .8);
  }
  100% {
    -webkit-transform: scale(1, 1);
  }
}

@keyframes prop {
  0% {
    transform: matrix(1, 0, 0, 1, 0, 0);
  }
  20% {
    transform: matrix(1, 0, 0, .8, 0, 0);
  }
  40% {
    transform: matrix(1, 0, 0, .6, 0, 0);
  }
  50% {
    transform: matrix(1, 0, 0, .4, 0, 0);
  }
  60% {
    transform: matrix(1, 0, 0, .2, 0, 0);
  }
  70% {
    transform: matrix(1, 0, 0, .4, 0, 0);
  }
  80% {
    transform: matrix(1, 0, 0, .6, 0, 0);
  }
  90% {
    transform: matrix(1, 0, 0, .8, 0, 0);
  }
  100% {
    transform: matrix(1, 0, 0, 1, 0, 0);
  }
}

<svg xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink" width="128px" height="128px" viewBox="0 0 16 16">
    <g id="test">
        <rect fill="#404040" x="7.062" y="3.625" width="1.875" height="8.75"/>
    </g>
</svg>

推荐答案

我试图使用 CSS 过渡围绕其中心点旋转一个简单的 cog svg 图形.我在 Firefox 上遇到了和你一样的问题；变换原点似乎没有效果.

I was attempting to rotate a simple cog svg graphic around its centre point using a CSS transition. I had the same problem as you with Firefox; transform-origin seemed to have no effect.

解决方案是绘制原始 svg 形状，使其中心位于坐标 0, 0:

The solution was to draw the original svg shape so that its centre was at coordinate 0, 0:

<svg x="0px" y="0px" width="400px" height="400px" viewBox="0 0 400 400">
    <rect id="myObject" x="-50" y="-50" fill="#E52420" width="100" height="100"/>
</svg>

然后在它周围添加一个组并翻译成你想要的位置:

Then add a group around it and translate to the position you want:

<svg x="0px" y="0px" width="400px" height="400px" viewBox="0 0 400 400">
    <g transform="translate(150, 100)">
        <rect id="myObject" x="-50" y="-50" fill="#E52420" width="100" height="100"/>
    </g>
</svg>

现在您可以应用应该在 Firefox 中工作的 css 转换(我使用基于用户操作的 JavaScript(js-rotateObject)向 HTML 标签添加一个类，并使用 Minimizr 检查浏览器可以处理转换和转换(.csstransforms.csstransitions):

Now you can apply css transitions that should work in Firefox (I add a class to the HTML tag using JavaScript based on a user action (js-rotateObject) and use Minimizr to check that the browser can handle transforms and transitions (.csstransforms.csstransitions):

#myObject{
    transform: rotate(0deg);
    transition: all 1s linear;
}

.csstransforms.csstransitions.js-rotateObject #myObject{
    transform: rotate(360deg);
}

希望有所帮助.

这篇关于在 SVG 组上设置转换原点在 Firefox 中不起作用的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！