Merge pull request #175 from lunzii/master

Add options for chart legend font style.

@@ -25,8 +25,10 @@ typedef NS_ENUM(NSUInteger, PNLegendItemStyle) {
 @property (assign, nonatomic) BOOL hasLegend;
 @property (assign, nonatomic) PNLegendPosition legendPosition;
 @property (assign, nonatomic) PNLegendItemStyle legendStyle;
+
+@property (assign, nonatomic) UIFont *legendFont;
+@property (assign, nonatomic) UIColor *legendFontColor;
 @property (assign, nonatomic) NSUInteger labelRowsInSerialMode;
-@property (assign, nonatomic) CGFloat legendFontSize;
 
 /**
  *  returns the Legend View, or nil if no chart data is present.

@@ -818,7 +818,7 @@
      * 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;
 
     NSUInteger counter = 0;
     NSUInteger rowMaxHeight = 0;
@@ -827,7 +827,7 @@
         /* 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 */
         
@@ -874,7 +874,8 @@
 
         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;
         

@@ -348,7 +348,7 @@
      * 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;
     
     NSUInteger counter = 0;
     NSUInteger rowWidth = 0;
@@ -358,7 +358,7 @@
         /* 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]];
         
         if ((rowWidth + labelsize.width + beforeLabel > mWidth)&&(self.legendStyle == PNLegendItemStyleSerial)) {
             rowWidth = 0;
@@ -376,7 +376,8 @@
         
         UILabel *label = [[UILabel alloc] initWithFrame:CGRectMake(x + beforeLabel, y, labelsize.width, 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;
         

@@ -80,8 +80,10 @@
         
 
         [self.view addSubview:self.lineChart];
-        self.lineChart.legendStyle = PNLegendItemStyleSerial;
-        self.lineChart.legendFontSize = 12.0;
+
+        self.lineChart.legendStyle = PNLegendItemStyleStacked;
+        self.lineChart.legendFont = [UIFont boldSystemFontOfSize:12.0f];
+        self.lineChart.legendFontColor = [UIColor redColor];
         
         UIView *legend = [self.lineChart getLegendWithMaxWidth:320];
         [legend setFrame:CGRectMake(30, 340, legend.frame.size.width, legend.frame.size.width)];
@@ -154,7 +156,7 @@
         
         
         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(130, 350, legend.frame.size.width, legend.frame.size.height)];