d3js | saveSvgAsPng save download svg with css

Testing solutions for saving svg that contains external styles

The colours of the circles are set via css classes (not inline via d3) Just the svg node is saved, whilst keeping the external css using saveSvgAsPng (all client side)

Note: You can drag the circles and the image save the current interaction/render

<html>
  <head>
    <style>
        body {
          font-family: -apple-system, BlinkMacSystemFont, monospace;
          font-weight: 400;
          line-height: 1.5;
          background: #130C0E
        }
        circle {
            stroke: #130C0E;
            stroke-width: 5px;
        }
        .even {
            fill: #00B0DD;
        }
        .odd {
            fill: #FDBB30;
        }
        .active {
          stroke: #A4CD39;
          stroke-width: 20px;
        }
        /*// just for the buttons*/
        .btn {
            font-family: inherit;
            font-size: .875rem;
            font-weight: 700;
            font-weight: 500;
            cursor: pointer;
            display: inline-block;
            line-height: 1.125rem;
            padding: .5rem 1rem;
            margin: 0;
            height: auto;
            border: 1px solid transparent;
            vertical-align: middle;
            -webkit-appearance: none;
            color: inherit;
            background-color: transparent;
        }
        .btn-primary {
          color: #fff;
          background-color: #7AC143;
          border-radius: 3px;
          font-size: 16px;
          letter-spacing: 1px;
        }
        .btn-primary:hover {
          box-shadow: inset 0 0 0 20rem #A4CD39;
        }
    </style>
  </head>
  <body>
    <div id="chart">
        <svg width="960" height="500"></svg>
        <button class="btn btn-primary" onclick="svgToPng()">svg to png</button>
        <button class="btn btn-primary" onclick="svgToSvg()">svg to svg (check console)</button>
    </div>

var circles = d3.range(20).map(function() {
          return {
            x: Math.round(Math.random() * (width - radius * 2) + radius),
            y: Math.round(Math.random() * (height - radius * 2) + radius)
          };
        });

svg.selectAll('circle')
          .data(circles)
          .enter().append('circle')
            .attr('cx', function(d) { return d.x; })
            .attr('cy', function(d) { return d.y; })
            .attr('r', radius)
            .attr('class', function(d, i) {
                if (i % 2 === 0) {
                    return 'even';
                } else {
                    return 'odd';
                }
            })
            .call(d3.drag()
                .on('start', dragstarted)
                .on('drag', dragged)
                .on('end', dragended));

function dragstarted(d) {
          d3.select(this).raise().classed('active', true);
        }

function dragged(d) {
          d3.select(this).attr('cx', d.x = d3.event.x).attr('cy', d.y = d3.event.y);
        }

function dragended(d) {
          d3.select(this).classed('active', false);
        }

// https://github.com/exupero/saveSvgAsPng
        function svgToPng() {
            saveSvgAsPng(d3.select('svg').node(), 'chart.png');
        }
        function svgToSvg() {
            svgAsDataUri(d3.select('svg').node(), {}, function(uri) {
                console.log('uri', uri);
            });
        }

</script>

</body>
</html>

Updated missing url https://rawgit.com/exupero/saveSvgAsPng/gh-pages/saveSvgAsPng.js to https://cdn.jsdelivr.net/gh/exupero/savesvgaspng/gh-pages/savesvgaspng.js

https://d3js.org/d3.v4.min.js

https://rawgit.com/exupero/saveSvgAsPng/gh-pages/saveSvgAsPng.js