fixes the following issue:

When trying to zoom in/out using the pinch gesture when the zoom in/out limit is reached the chart starts to pan. I'm not sure this is the best way to solve this issue
ChartsOrg · May 31, 2015 · bd1549c · bd1549c
1 parent 7938ae1
commit bd1549c
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Showing 2 changed files with 13 additions and 1 deletion.
diff --git a/Charts/Classes/Charts/BarLineChartViewBase.swift b/Charts/Classes/Charts/BarLineChartViewBase.swift
@@ -619,7 +619,9 @@ public class BarLineChartViewBase: ChartViewBase, UIGestureRecognizerDelegate
         }
         else if (recognizer.state == UIGestureRecognizerState.Changed)
         {
-            if (_isScaling)
+            var isZoomingOut = (recognizer.scale < 1);
+            var canZoomMore = isZoomingOut ? _viewPortHandler.canZoomOutMore() : _viewPortHandler.canZoomInMore();
+            if (_isScaling && canZoomMore)
             {
                 var location = recognizer.locationInView(self);
                 location.x = location.x - _viewPortHandler.offsetLeft;

diff --git a/Charts/Classes/Utils/ChartViewPortHandler.swift b/Charts/Classes/Utils/ChartViewPortHandler.swift
@@ -407,4 +407,14 @@ public class ChartViewPortHandler: NSObject
         _maxScaleX = maxScaleX;
         setMinimumScaleX(minScaleX);
     }
+
+    public func canZoomOutMore() -> Bool
+    {
+        return (_scaleX > _minScaleX);
+    }
+
+    public func canZoomInMore() -> Bool
+    {
+        return (_scaleX < _maxScaleX);
+    }
 }