updating usages in singlestat

public/app/plugins/panel/singlestat/module.ts

@@ -3,6 +3,7 @@ import $ from 'jquery';
 import 'vendor/flot/jquery.flot';
 import 'vendor/flot/jquery.flot.gauge';
 import 'app/features/panel/panellinks/link_srv';
+import { getDecimalsForValue } from '@grafana/ui';
 
 import kbn from 'app/core/utils/kbn';
 import config from 'app/core/config';
@@ -190,7 +191,7 @@ class SingleStatCtrl extends MetricsPanelCtrl {
       data.value = 0;
       data.valueRounded = 0;
     } else {
-      const decimalInfo = this.getDecimalsForValue(data.value);
+      const decimalInfo = getDecimalsForValue(data.value);
       const formatFunc = getValueFormat(this.panel.format);
 
       data.valueFormatted = formatFunc(
@@ -243,47 +244,6 @@ class SingleStatCtrl extends MetricsPanelCtrl {
     this.render();
   }
 
-  getDecimalsForValue(value) {
-    if (_.isNumber(this.panel.decimals)) {
-      return { decimals: this.panel.decimals, scaledDecimals: null };
-    }
-
-    const delta = value / 2;
-    let dec = -Math.floor(Math.log(delta) / Math.LN10);
-
-    const magn = Math.pow(10, -dec);
-    const norm = delta / magn; // norm is between 1.0 and 10.0
-    let size;
-
-    if (norm < 1.5) {
-      size = 1;
-    } else if (norm < 3) {
-      size = 2;
-      // special case for 2.5, requires an extra decimal
-      if (norm > 2.25) {
-        size = 2.5;
-        ++dec;
-      }
-    } else if (norm < 7.5) {
-      size = 5;
-    } else {
-      size = 10;
-    }
-
-    size *= magn;
-
-    // reduce starting decimals if not needed
-    if (Math.floor(value) === value) {
-      dec = 0;
-    }
-
-    const result: any = {};
-    result.decimals = Math.max(0, dec);
-    result.scaledDecimals = result.decimals - Math.floor(Math.log(size) / Math.LN10) + 2;
-
-    return result;
-  }
-
   setValues(data) {
     data.flotpairs = [];
 
@@ -319,7 +279,7 @@ class SingleStatCtrl extends MetricsPanelCtrl {
         data.value = this.series[0].stats[this.panel.valueName];
         data.flotpairs = this.series[0].flotpairs;
 
-        const decimalInfo = this.getDecimalsForValue(data.value);
+        const decimalInfo = getDecimalsForValue(data.value);
 
         data.valueFormatted = formatFunc(
           data.value,