Merge pull request #158 from dredful/master

Added a method to allow the update of both the current and the total for...

@@ -23,6 +23,7 @@ typedef NS_ENUM (NSUInteger, PNChartFormatType) {
 - (void)strokeChart;
 - (void)growChartByAmount:(NSNumber *)growAmount;
 - (void)updateChartByCurrent:(NSNumber *)current;
+- (void)updateChartByCurrent:(NSNumber *)current byTotal:(NSNumber *)total;
 - (id)initWithFrame:(CGRect)frame
               total:(NSNumber *)total
             current:(NSNumber *)current

@@ -206,13 +206,20 @@ displayCountingLabel:(BOOL)displayCountingLabel
 
 
 -(void)updateChartByCurrent:(NSNumber *)current{
+    
+    [self updateChartByCurrent:current
+                       byTotal:_total];
+    
+}
+
+-(void)updateChartByCurrent:(NSNumber *)current byTotal:(NSNumber *)total {
     // Add animation
     CABasicAnimation *pathAnimation = [CABasicAnimation animationWithKeyPath:@"strokeEnd"];
     pathAnimation.duration = self.duration;
     pathAnimation.timingFunction = [CAMediaTimingFunction functionWithName:kCAMediaTimingFunctionEaseInEaseOut];
     pathAnimation.fromValue = @([_current floatValue] / [_total floatValue]);
-    pathAnimation.toValue = @([current floatValue] / [_total floatValue]);
-    _circle.strokeEnd   = [current floatValue] / [_total floatValue];
+    pathAnimation.toValue = @([current floatValue] / [total floatValue]);
+    _circle.strokeEnd   = [current floatValue] / [total floatValue];
     
     if (_strokeColorGradientStart) {
         self.gradientMask.strokeEnd = _circle.strokeEnd;
@@ -221,10 +228,11 @@ displayCountingLabel:(BOOL)displayCountingLabel
     [_circle addAnimation:pathAnimation forKey:@"strokeEndAnimation"];
     
     if (_displayCountingLabel) {
-        [self.countingLabel countFrom:fmin([_current floatValue], [_total floatValue]) to:fmin([current floatValue], [_total floatValue]) withDuration:self.duration];
+        [self.countingLabel countFrom:fmin([_current floatValue], [_total floatValue]) to:fmin([current floatValue], [total floatValue]) withDuration:self.duration];
     }
     
     _current = current;
+    _total = total;
 }
 
 @end
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