Add options for chart legend font style.

@@ -25,7 +25,8 @@ typedef NS_ENUM(NSUInteger, PNLegendItemStyle) {
 @property (assign, nonatomic) BOOL hasLegend;
 @property (assign, nonatomic) PNLegendPosition legendPosition;
 @property (assign, nonatomic) PNLegendItemStyle legendStyle;
-@property (assign, nonatomic) CGFloat legendFontSize;
+@property (assign, nonatomic) UIFont *legendFont;
+@property (assign, nonatomic) UIColor *legendFontColor;
 
 /**
  *  returns the Legend View, or nil if no chart data is present.

@@ -821,13 +821,13 @@
      * should be in the middle of the first row */
     CGFloat singleRowHeight = [PNLineChart sizeOfString:@"Test"
                                               withWidth:MAXFLOAT
-                                                   font:[UIFont systemFontOfSize:self.legendFontSize]].height;
+                                                   font:self.legendFont ? self.legendFont : [UIFont systemFontOfSize:12.0f]].height;
 
     for (PNLineChartData *pdata in self.chartData) {
         /* Expected label size*/
         CGSize labelsize = [PNLineChart sizeOfString:pdata.dataTitle
                                            withWidth:maxLabelWidth
-                                                font:[UIFont systemFontOfSize:self.legendFontSize]];
+                                                font:self.legendFont ? self.legendFont : [UIFont systemFontOfSize:12.0f]];
         
         /* draw lines */
         
@@ -869,7 +869,8 @@
 
         UILabel *label = [[UILabel alloc] initWithFrame:CGRectMake(x + legendLineWidth, y, maxLabelWidth, labelsize.height)];
         label.text = pdata.dataTitle;
-        label.font = [UIFont systemFontOfSize:self.legendFontSize];
+        label.textColor = self.legendFontColor ? self.legendFontColor : [UIColor blackColor];
+        label.font = self.legendFont ? self.legendFont : [UIFont systemFontOfSize:12.0f];
         label.lineBreakMode = NSLineBreakByWordWrapping;
         label.numberOfLines = 0;
         x += self.legendStyle == PNLegendItemStyleStacked ? 0 : labelsize.width + legendLineWidth;

@@ -277,13 +277,13 @@
      * should be in the middle of the first row */
     CGFloat singleRowHeight = [PNLineChart sizeOfString:@"Test"
                                               withWidth:MAXFLOAT
-                                                   font:[UIFont systemFontOfSize:self.legendFontSize]].height;
+                                                   font:self.legendFont ? self.legendFont : [UIFont systemFontOfSize:12.0f]].height;
     
     for (PNPieChartDataItem *pdata in self.items) {
         /* Expected label size*/
         CGSize labelsize = [PNLineChart sizeOfString:pdata.textDescription
                                            withWidth:maxLabelWidth
-                                                font:[UIFont systemFontOfSize:self.legendFontSize]];
+                                                font:self.legendFont ? self.legendFont : [UIFont systemFontOfSize:12.0f]];
         
 
         // Add inflexion type
@@ -293,7 +293,8 @@
         
         UILabel *label = [[UILabel alloc] initWithFrame:CGRectMake(x + legendCircle, y, maxLabelWidth, labelsize.height)];
         label.text = pdata.textDescription;
-        label.font = [UIFont systemFontOfSize:self.legendFontSize];
+        label.textColor = self.legendFontColor ? self.legendFontColor : [UIColor blackColor];
+        label.font = self.legendFont ? self.legendFont : [UIFont systemFontOfSize:12.0f];
         label.lineBreakMode = NSLineBreakByWordWrapping;
         label.numberOfLines = 0;
         x += self.legendStyle == PNLegendItemStyleStacked ? 0 : labelsize.width + legendCircle;

@@ -80,7 +80,8 @@
 
         [self.view addSubview:self.lineChart];
         self.lineChart.legendStyle = PNLegendItemStyleStacked;
-        self.lineChart.legendFontSize = 12.0;
+        self.lineChart.legendFont = [UIFont boldSystemFontOfSize:12.0f];
+        self.lineChart.legendFontColor = [UIColor redColor];
         
         UIView *legend = [self.lineChart getLegendWithMaxWidth:200];
         [legend setFrame:CGRectMake(100, 400, legend.frame.size.width, legend.frame.size.width)];
@@ -153,7 +154,7 @@
         
         
         self.pieChart.legendStyle = PNLegendItemStyleStacked;
-        self.pieChart.legendFontSize = 12.0;
+        self.pieChart.legendFont = [UIFont boldSystemFontOfSize:12.0f];
         
         UIView *legend = [self.pieChart getLegendWithMaxWidth:200];
         [legend setFrame:CGRectMake(100, 400, legend.frame.size.width, legend.frame.size.width)];