From d2df89151eb35bf039a140c5548d8cf9410dbc42 Mon Sep 17 00:00:00 2001
From: Adarsh R <adarsh.mattur@gmail.com>
Date: Tue, 14 Nov 2017 17:33:52 +0530
Subject: [PATCH] Update gauge directive to accept extents function to format
 min and max labels

---
 src/controller.js      | 9 +++++++++
 src/gauge-directive.js | 6 +++++-
 2 files changed, 14 insertions(+), 1 deletion(-)

diff --git a/src/controller.js b/src/controller.js
index f579335..90cac16 100644
--- a/src/controller.js
+++ b/src/controller.js
@@ -58,6 +58,7 @@ function ChartController($scope, $timeout) {
 
     this.addGauge = addGauge;
     this.addGaugeLabelFormatFunction = addGaugeLabelFormatFunction;
+    this.addGaugeLabelExtentsFunction = addGaugeLabelExtentsFunction;
 
     this.addBar = addBar;
 
@@ -280,6 +281,10 @@ function ChartController($scope, $timeout) {
             config.gauge.label = config.gauge.label || {};
             config.gauge.label.format = $scope.gaugeLabelFormatFunction;
         }
+        if ($scope.gaugeLabelExtentsFunction) {
+            config.gauge.label = config.gauge.label || {};
+            config.gauge.label.extents = $scope.gaugeLabelExtentsFunction;
+        }
         if ($scope.point != null) {
             config.point = $scope.point;
         }
@@ -603,6 +608,10 @@ function ChartController($scope, $timeout) {
         $scope.gaugeLabelFormatFunction = gaugeLabelFormatFunction;
     }
 
+    function addGaugeLabelExtentsFunction(gaugeLabelExtentsFunction) {
+        $scope.gaugeLabelExtentsFunction = gaugeLabelExtentsFunction;
+    }
+
     function addBar(bar) {
         $scope.bar = bar;
     }
diff --git a/src/gauge-directive.js b/src/gauge-directive.js
index 5c5eb91..4521058 100644
--- a/src/gauge-directive.js
+++ b/src/gauge-directive.js
@@ -74,13 +74,17 @@ function ChartGauge () {
         if (attrs.labelFormatFunction) {
             chartCtrl.addGaugeLabelFormatFunction(scope.labelFormatFunction());
         }
+        if (attrs.labelExtentsFunction) {
+            chartCtrl.addGaugeLabelExtentsFunction(scope.labelExtentsFunction());
+        }
     };
 
     return {
         require: '^c3chart',
         restrict: 'E',
         scope: {
-            'labelFormatFunction': "&"
+            'labelFormatFunction': "&",
+            'labelExtentsFunction': "&"
         },
         replace: true,
         link: gaugeLinker