[Chartjs]-How to add title inside doughnut chart in Angular Chart?

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4👍

✅

I also take a stab at this. This approach is based on @RYUUSEiiSTAR ‘s approach and your link created. There is still need to do the right calculation to center the text.
I’ve created a plunkr to demonstrate: https://jsfiddle.net/onoc2wmx/ (New Link).

UPDATE
After couple hours hacking, I updated the code so that you can modify the font size and now it is responsive. Now it will look like this:

enter image description here

var options = { 
  showTooltips : true,
  animation: true,
  percentageInnerCutout : 70,
  onAnimationComplete: innerTextFunction
};

var chartCtx = $("#canvas").get(0).getContext("2d");
var textCtx = $("#text").get(0).getContext("2d");
var chart = new Chart(chartCtx).Doughnut(doughnutData, options);


function innerTextFunction() {
  var canvasWidthvar = $('#canvas').width();
  var canvasHeight = $('#canvas').height();
  var constant = 114;
  var fontsize = (canvasHeight/constant).toFixed(2);
  textCtx.font = fontsize + "em Verdana";
  textCtx.textBaseline="middle"; 
  var total = 0;
  $.each(doughnutData,function() {
    total += parseInt(this.value,10);
  });
  var tpercentage = ((doughnutData[0].value/total)*100).toFixed(2)+"%";
  var textWidth = textCtx.measureText(tpercentage).width;
  var txtPosx = Math.round((canvasWidthvar - textWidth)/2);
  textCtx.fillText(tpercentage, txtPosx, canvasHeight/4);
}     


<div style="position: relative;">
    <canvas id="text" style="z-index: 1; position: absolute; 
                   left: 0px; top: 0px; width: 300px; height: 300px;"></canvas>
    <canvas id="canvas" style="z-index: 2; position: absolute; 
                   left: 0px; top: 0px; width: 300px; height: 300px;"></canvas>
</div>

4👍

I’ll take a stab at this. This approach just absolutely positions a label over top of the canvas. The only downside to this is that you have to set the height and width of both the #canvas-holder and canvas. I’ve created a plunkr to demonstrate: http://plnkr.co/edit/kT63Ur5ebNm1A6bQWSlO

<!-- css -->
#canvas-holder {
  height: 100px;
  width: 100px;
  position: relative;
}

.chart-title {
  position: absolute;
  left: 0;
  right: 0;
  margin: 0 auto;
  top: 50%;
  transform: translateY(-50%);
  width: 100%;
  text-align: center;
}

<!-- canvas -->
<div id="canvas-holder">
    <label class="chart-title">My Chart Title</label>
    <canvas id="chart-area" height="100" width="100" />
</div>

1👍

Just adjust the % on bottom and font-size css

<div class="row charDonut">
   <div class="chartTitle">
     {{vm.totalTask}}<br>
     {{vm.chartTitle}}
   </div>
   <canvas id="doughnut" class="chart chart-doughnut">
   </canvas>
</div>

.row.charDonut{
  position: relative;
}

.chartTitle{
  position: absolute;
  left: 0;
  right: 0;
  bottom: 36%; <<----
  text-align: center;
  font-size: 2em; <<----
}

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