Put sum of values in center of doughnut chart?

Question

I'm drawing this pie chart:

using this code:

dxPieChart: {
    dataSource: dsAlarmsBySeverity,
    size: {
        width: 275,
        height: 150
    },
    palette: ['#FFFF00', '#FF9900', '#CC3300', '#33CC33', '#0066FF'],
    legend: {
        backgroundColor: '#FCFCFC',
        border: {
                color: 'black',
                width: .5,
                visible: true,
                cornerRadius: 10
        },
        verticalAlign: 'middle'
    },
    series: [{
        type: 'doughnut',
        argumentField: 'severity',
        valueField: 'count',
        label: {
            visible: false,
            font: {
                size: 16
            },
            connector: {
                visible: true,
                width: 0.5
            },
            position: 'columns',
            customizeText: function(arg) {
                return arg.argumentText
            }
        },
        border: {
            color: 'black',
            width: .5,
            visible: true
        },
        hoverStyle: {
            border: {
                color: 'black',
                width: .5,
                visible: true
            }
        }
    }]
}

Is there a way to add the sum of all values to the center of the donut? Like so:

Answer 1

As a workaround until the open issue is complete, you could just draw your own total on the canvas element itself.

You will have to manually calculate the x/y position on the canvas (like [150,100] in this example).

var canvas=document.getElementById("myChart");
var ctx=canvas.getContext("2d");
ctx.font="36px verdana";
ctx.fillText("76",150,100);