3

I'm using Leaflet 0.7.1 and want to draw a radial menu (like openstreetmap's iD editor) on top using d3. Some examples I found use Leaflet's overlayPane to append the svg element to:

var svgContainer= d3.select(map.getPanes().overlayPane).append("svg");

On mouseclick, I add the menu and reposition it to the screen xy coords:

map.on('contextmenu', function(e) {
    console.log('contextmenu()');
    var tooltip;
    var center = [e.layerPoint.x, e.layerPoint.y];
    var menu = svgContainer.append('g')
        .attr("class", 'leaflet-zoom-hide')
        .attr('class', 'radial-menu')
        .attr('transform', 'translate(' + center + ')')
        .attr('opacity', 0);
        menu.transition()
            .attr('opacity', 1);

        menu.append('path')
            .attr('class', 'radial-menu-background')
            .attr('d', 'M' + r * Math.sin(a0) + ',' +
                             r * Math.cos(a0) +
                      ' A' + r + ',' + r + ' 0 ' + 0 + ',0 ' +
                             (r * Math.sin(a1) + 1e-3) + ',' +
                             (r * Math.cos(a1) + 1e-3)) // Force positive-length path (#1305)
            .attr('stroke-width', 50)
            .attr('stroke-linecap', 'round');
    });

Somehow, the SVG paths get drawn (this is visible in the Chrome Inspector) but are behind the map object. When I 'drag' the SVG element just below the body tag in Inspector, I can see the circle paths.

Any ideas on how I can draw SVG 'menu' elements on top of Leaflet?

Thanks!!

Screenshot

See this fiddle for a demo. Right click or hold to add an invisible element.

Ps. I also asked this question on StackOverflow. Sorry for crossposting.

2

Solved. A colleague pointed out that the SVG container had no dimensions. Giving it the appropriate width and height proved to be the answer:

    svgContainer.attr("width", width).attr("height", height)

Your Answer

By clicking “Post Your Answer”, you agree to our terms of service, privacy policy and cookie policy

Not the answer you're looking for? Browse other questions tagged or ask your own question.