add gas limit chart

lib/history.js

@@ -436,6 +436,25 @@ History.prototype.getBlockTimes = function()
 	return blockTimes;
 }
 
+History.prototype.getGasLimit = function()
+{
+	var gasLimitHistory = _( this._items )
+		.sortByOrder( 'height', false )
+		.filter(function (item)
+		{
+			return item.block.trusted;
+		})
+		.slice(0, MAX_BINS)
+		.reverse()
+		.map(function (item)
+		{
+			return item.block.gasLimit;
+		})
+		.value();
+
+	return gasLimitHistory;
+}
+
 History.prototype.getDifficulty = function()
 {
 	var difficultyHistory = _( this._items )
@@ -570,6 +589,7 @@ History.prototype.getCharts = function()
 					uncles: item.block.uncles.length,
 					transactions: item.block.transactions.length,
 					gasSpending: item.block.gasUsed,
+					gasLimit: item.block.gasLimit,
 					miner: item.block.miner
 				};
 			})
@@ -583,6 +603,7 @@ History.prototype.getCharts = function()
 			uncles : _.pluck( chartHistory, 'uncles' ),
 			transactions : _.pluck( chartHistory, 'transactions' ),
 			gasSpending : _.pluck( chartHistory, 'gasSpending' ),
+			gasLimit : _.pluck( chartHistory, 'gasLimit' ),
 			miners : this.getMinersCount(),
 			propagation : this.getBlockPropagation(),
 			uncleCount : this.getUncleCount(),

src/js/controllers.js

@@ -21,6 +21,7 @@ netStatsApp.controller('StatsCtrl', function($scope, $filter, $localStorage, soc
 	$scope.uncleCount = 0;
 	$scope.bestStats = {};
 
+	$scope.lastGasLimit = _.fill(Array(MAX_BINS), 2);
 	$scope.lastBlocksTime = _.fill(Array(MAX_BINS), 2);
 	$scope.difficultyChart = _.fill(Array(MAX_BINS), 2);
 	$scope.transactionDensity = _.fill(Array(MAX_BINS), 2);
@@ -327,6 +328,9 @@ netStatsApp.controller('StatsCtrl', function($scope, $filter, $localStorage, soc
 				if( !_.isEqual($scope.avgHashrate, data.avgHashrate) )
 					$scope.avgHashrate = data.avgHashrate;
 
+				if( !_.isEqual($scope.lastGasLimit, data.gasLimit) && data.gasLimit.length >= MAX_BINS )
+					$scope.lastGasLimit = data.gasLimit;
+
 				if( !_.isEqual($scope.lastBlocksTime, data.blocktime) && data.blocktime.length >= MAX_BINS )
 					$scope.lastBlocksTime = data.blocktime;
 

src/views/index.jade

@@ -88,6 +88,16 @@ block content
               span.small-title uptime
               span.small-value {{ upTimeTotal | upTimeFilter }}
 
+        div.row.second-row
+          div.col-xs-3.stat-holder.box
+          div.col-xs-3.stat-holder.box
+            div.gasprice.text-info
+              i.icon-gasprice
+              span.small-title gas limit
+              span.small-value {{ bestStats.block.gasLimit }} gas
+          div.col-xs-3.stat-holder.box
+          div.col-xs-3.stat-holder.box
+
         div.row
           div.col-xs-3.stat-holder
             div.big-info.chart(class="{{ avgBlockTime | avgTimeClass }}")
@@ -146,6 +156,16 @@ block content
         //- div.col-xs-12
         nodemap#mapHolder(data="map")
 
+
+    div.row
+      div.col-xs-3.stat-holder
+        div.big-info.chart.text-info
+          //- i.icon-difficulty
+          span.small-title gas limit
+          //- span.small-value {{ lastDifficulty | number }}
+          sparkchart.big-details.spark-difficulty(data="{{lastGasLimit.join(',')}}")
+
+    div.row
       div.col-xs-12.stats-boxes
         div.row.second-row
           div.col-xs-12.stat-holder.box
@@ -154,6 +174,7 @@ block content
               span.small-title Block #1028201 hash
               span.small-value {{frontierHash}}
 
+
       //- div.clearfix
 
     div.row(ng-cloak, style="padding-top: 10px")