Function drawGaugeLabel

front/components/u-charts/u-charts.js:1568–1601

(gaugeOption, radius, centerPosition, opts, config, context)

}

function drawGaugeLabel(gaugeOption, radius, centerPosition, opts, config, context) {
  radius -= gaugeOption.width / 2 + config.gaugeLabelTextMargin;

  let totalAngle = gaugeOption.startAngle - gaugeOption.endAngle + 1;
  let splitAngle = totalAngle / gaugeOption.splitLine.splitNumber;
  let totalNumber = gaugeOption.endNumber - gaugeOption.startNumber;
  let splitNumber = totalNumber / gaugeOption.splitLine.splitNumber;
  let nowAngle = gaugeOption.startAngle;
  let nowNumber = gaugeOption.startNumber;
  for (let i = 0; i < gaugeOption.splitLine.splitNumber + 1; i++) {
    var pos = {
      x: radius * Math.cos(nowAngle * Math.PI),
      y: radius * Math.sin(nowAngle * Math.PI)
    };
    var labelText = gaugeOption.labelFormat ? gaugeOption.labelFormat(nowNumber) : nowNumber;
    pos.x += centerPosition.x - measureText(labelText) / 2;
    pos.y += centerPosition.y;
    var startX = pos.x;
    var startY = pos.y;
    context.beginPath();
    context.setFontSize(config.fontSize);
    context.setFillStyle(gaugeOption.labelColor || '#666666');
    context.fillText(labelText, startX, startY + config.fontSize / 2);
    context.closePath();
    context.stroke();

    nowAngle += splitAngle;
    if (nowAngle >= 2) {
      nowAngle = nowAngle % 2;
    }
    nowNumber += splitNumber;
  }

}

function drawRadarLabel(angleList, radius, centerPosition, opts, config, context) {
  var radarOption = opts.extra.radar || {};