CODEWITHSUNDEEP
javascripthtmld3.jssvgsafari
lijo
lijo

Reputation: 33

CSS transform-origin not working for svg in safari

I am trying to rotate the image about its center. But in Safari, the top left corner of the SVG, it's origin is always taken as the center for rotation.

       var rotate_val= 30;
       function rotate(val){
           rotate_val =  rotate_val + val;
           var transform = "translate(0, 0) scale(1, 1) rotate("+rotate_val+ ")";

           var svg = d3.select("g").transition()
            .style('-webkit-transform-origin', '50% 50%')
            .style('transform-origin', 'center')
            .duration(1200)
            .attrTween("transform",function(interpolate) {
                return d3.interpolate(transform, transform);
            });

       }



  <body>
      <button onclick="rotate(30)">Rotate + 30</button>
      <button onclick="rotate(-30)">Rotate - 30</button>
      <div id = "svgcontainer" style="border: 1px solid">
         <svg width = "100%" height = "100%" viewBox="0 0 750 400">
             <g>
                 <image x="325" y="150" xlink:href="image.png" height="100" width="100"/>
            </g>
         </svg>
      </div>
   </body>

https://jsfiddle.net/ztw2omgb/

Upvotes: 2

Views: 3233

Answers (1)

lemming
lemming

Reputation: 1863

According to the MDN docs for transform-origin, the status of transform-origin for SVG is Compatibility Unknown. So it may not be implemented yet in Safari.

However, if you remove the transform-origin attributes completely, you can use the second and third arguments of the rotate() function to define the center of rotation for your selected element. e.g.

Your image's x, and y values are 325 and 150 respectively, and the width and height are both 100. So the center of rotation should be the x and y values plus half the width and height (50) giving 375 and 200.

function rotate(val){
  rotate_val =  rotate_val + val;

  // note the rotate function now contains second and third argument,
  // which specify the center of rotation.
  var transform = "translate(0, 0) scale(1, 1) rotate("+rotate_val+ ", 375, 200)";

  d3.select("g").transition()
    .duration(1200)
    .attrTween("transform",function(interpolate) {
       return d3.interpolate(transform, transform);
    });

}

Upvotes: 10

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