exporting.js in highcharts-rails-4.2.5

- old
+ new

@@ -1,7 +1,7 @@
 /**
- * @license Highcharts JS v4.2.4 (2016-04-14)
+ * @license Highcharts JS v4.2.5 (2016-05-06)
  * Exporting module
  *
  * (c) 2010-2016 Torstein Honsi
  *
  * License: www.highcharts.com/license
@@ -102,10 +102,11 @@
 	//enabled: true,
 	//filename: 'chart',
 	type: 'image/png',
 	url: 'http://export.highcharts.com/',
 	//width: undefined,
+	printMaxWidth: 780,
 	//scale: 2
 	buttons: {
 		contextButton: {
 			menuClassName: PREFIX + 'contextmenu',
 			//x: -10,
@@ -422,21 +423,33 @@
 		var chart = this,
 			container = chart.container,
 			origDisplay = [],
 			origParent = container.parentNode,
 			body = doc.body,
-			childNodes = body.childNodes;
+			childNodes = body.childNodes,
+			printMaxWidth = chart.options.exporting.printMaxWidth,
+			hasUserSize,
+			resetParams,
+			handleMaxWidth;
 
 		if (chart.isPrinting) { // block the button while in printing mode
 			return;
 		}
 
 		chart.isPrinting = true;
 		chart.pointer.reset(null, 0);
 
 		fireEvent(chart, 'beforePrint');
 
+		// Handle printMaxWidth
+		handleMaxWidth = printMaxWidth && chart.chartWidth > printMaxWidth;
+		if (handleMaxWidth) {
+			hasUserSize = chart.hasUserSize;
+			resetParams = [chart.chartWidth, chart.chartHeight, false];
+			chart.setSize(printMaxWidth, chart.chartHeight, false);
+		}
+
 		// hide all body content
 		each(childNodes, function (node, i) {
 			if (node.nodeType === 1) {
 				origDisplay[i] = node.style.display;
 				node.style.display = NONE;
@@ -462,9 +475,15 @@
 					node.style.display = origDisplay[i];
 				}
 			});
 
 			chart.isPrinting = false;
+
+			// Reset printMaxWidth
+			if (handleMaxWidth) {
+				chart.setSize.apply(chart, resetParams);
+				chart.hasUserSize = hasUserSize;
+			}
 
 			fireEvent(chart, 'afterPrint');
 
 		}, 1000);
 