相关疑难解决方法(0)

TL; DR:我想在SVG精灵表中使用几个图标作为CSS背景图像,它们保持纵横比并自动缩放以填充父元素,只使用SVG和CSS.请不要使用JavaScript.

所以我有一个SVG格式的spritesheet,我使用SVG-Edit和Notepad ++中的一些手动编码组合.这是源代码:

<svg version="1.1"
  xmlns:svg="http://www.w3.org/2000/svg"
  xmlns="http://www.w3.org/2000/svg"
  width="600"
  height="400"
  viewBox="0 0 600 400">
  <!-- Created with SVG-edit - http://svg-edit.googlecode.com/ -->
  <title>chosen_sprite</title>
  <g>
    <title>Add</title>
    <rect fill="none" stroke-width="10" stroke-dasharray="null" stroke-linejoin="null" stroke-linecap="null" x="5" y="5" width="90" height="90" id="svg_1" stroke="#dcdcdc"/>
    <line id="svg_2" y2="50" x2="70" y1="50" x1="30" stroke-linecap="round" stroke-linejoin="null" stroke-dasharray="null" stroke-width="12" stroke="#00a00c" fill="none"/>
    <line id="svg_3" y2="30" x2="50" y1="70" x1="50" stroke-linecap="round" stroke-linejoin="null" stroke-dasharray="null" stroke-width="12" stroke="#00a00c" fill="none"/>
  </g>
  <g>
    <title>Delete</title>
    <rect fill="none" stroke-width="10" stroke-dasharray="null" stroke-linejoin="null" stroke-linecap="null" x="105" y="5" width="90" height="90" id="svg_1" stroke="#dcdcdc"/>
    <line id="svg_2" y2="70" …

我的目标是使用d3将图像添加到现有圆圈中.圆圈将呈现并与鼠标悬停方法交互,但仅当我使用"填充","颜色",而不是像.append("image")那样更复杂的东西.

      g.append("circle")
         .attr("class", "logo")
         .attr("cx", 700)
         .attr("cy", 300)
         .attr("r", 10)
         .attr("fill", "black")       // this code works OK
         .attr("stroke", "white")     // displays small black dot
         .attr("stroke-width", 0.25)
         .on("mouseover", function(){ // when I use .style("fill", "red") here, it works 
               d3.select(this)        
                   .append("svg:image")
                   .attr("xlink:href", "/assets/images/logo.jpeg")
                   .attr("cx", 700)
                   .attr("cy", 300)
                   .attr("height", 10)
                   .attr("width", 10);
         });

鼠标悬停后图像不显示.使用Ruby on Rails应用程序,我的图像"logo.jpeg"存储在assets/images /目录中.有什么帮助让我的徽标显示在圈内？谢谢.