Merge pull request #197 from dullgrass/master

Added the new feature support custom yLabels

@@ -39,7 +39,7 @@
 
 - (void)setGrade:(float)grade
 {
-    NSLog(@"New garde %f",grade);
+//    NSLog(@"New garde %f",grade);
   
     CGFloat startPosY = (1 - grade) * self.frame.size.height;
 
@@ -202,7 +202,7 @@
     [_chartLine addSublayer:self.textLayer];
     [self.textLayer setFontSize:textheigt/2];
   
-    [self.textLayer setString:[[NSString alloc]initWithFormat:@"%ld",(NSInteger)(grade*100)]];
+    [self.textLayer setString:[[NSString alloc]initWithFormat:@"%0.f",grade*100]];
     [self.textLayer setFrame:CGRectMake(0, textStartPosY, textWidth,  textheigt)];
     self.textLayer.contentsScale = [UIScreen mainScreen].scale;
 

@@ -10,7 +10,6 @@
 #import "PNColor.h"
 #import "PNChartLabel.h"
 
-
 @interface PNBarChart () {
     NSMutableArray *_xChartLabels;
     NSMutableArray *_yChartLabels;
@@ -67,48 +66,55 @@
 - (void)setYValues:(NSArray *)yValues
 {
     _yValues = yValues;
-
   //make the _yLabelSum value dependant of the distinct values of yValues to avoid duplicates on yAxis
-    int yLabelsDifTotal = (int)[NSSet setWithArray:yValues].count;
-    _yLabelSum = yLabelsDifTotal % 2 == 0 ? yLabelsDifTotal : yLabelsDifTotal + 1;
   
+  if (_showLabel) {
+    [self __addYCoordinateLabelsValues];
+  }
+}
+
+#pragma mark - Private Method
+#pragma mark - 添加柱状图的Y轴坐标
+- (void)__addYCoordinateLabelsValues{
+  
+  [self viewCleanupForCollection:_yChartLabels];
+  
+  NSArray *yAxisValues = _yLabels ? _yLabels : _yValues;
   if (_yMaxValue) {
     _yValueMax = _yMaxValue;
   } else {
-        [self getYValueMax:yValues];
+    [self getYValueMax:yAxisValues];
   }
   
-    if (_yChartLabels) {
-        [self viewCleanupForCollection:_yChartLabels];
-    }else{
-        _yLabels = [NSMutableArray new];
+  if (_yLabelSum==4) {
+    _yLabelSum = yAxisValues.count;
+    (_yLabelSum % 2 == 0) ? _yLabelSum : _yLabelSum++;
   }
   
-    if (_showLabel) {
-        //Add y labels
-        
-        float yLabelSectionHeight = (self.frame.size.height - _chartMargin * 2 - kXLabelHeight) / _yLabelSum;
-        
-        for (int index = 0; index < _yLabelSum; index++) {
-            
-            NSString *labelText = _yLabelFormatter((float)_yValueMax * ( (_yLabelSum - index) / (float)_yLabelSum ));
+  float sectionHeight = (self.frame.size.height - _chartMargin * 2 - kXLabelHeight) / _yLabelSum;
+  for (int i = 0; i < _yLabelSum; i++) {
+    NSString *labelText;
+    if (_yLabels) {
+      float yAsixValue = [_yLabels[_yLabels.count - i - 1] floatValue];
+      labelText= _yLabelFormatter(yAsixValue);
+    } else {
+      labelText = _yLabelFormatter((float)_yValueMax * ( (_yLabelSum - i) / (float)_yLabelSum ));
+    }
     
-            PNChartLabel * label = [[PNChartLabel alloc] initWithFrame:CGRectMake(0,
-                                                                                  yLabelSectionHeight * index + _chartMargin - kYLabelHeight/2.0,
-                                                                                  _yChartLabelWidth,
-                                                                                  kYLabelHeight)];
+    CGRect frame = (CGRect){0, sectionHeight * i + _chartMargin - kYLabelHeight/2.0, _yChartLabelWidth, kYLabelHeight};
+    PNChartLabel *label = [[PNChartLabel alloc] initWithFrame:frame];
     label.font = _labelFont;
     label.textColor = _labelTextColor;
     [label setTextAlignment:NSTextAlignmentRight];
     label.text = labelText;
-            
-            [_yChartLabels addObject:label];
     [self addSubview:label];
     
-        }
+    [_yChartLabels addObject:label];
   }
 }
 
+
+
 -(void)updateChartData:(NSArray *)data{
     self.yValues = data;
     [self updateBar];

@@ -103,7 +103,12 @@
         self.barChart.labelMarginTop = 5.0;
         [self.barChart setXLabels:@[@"SEP 1",@"SEP 2",@"SEP 3",@"SEP 4",@"SEP 5",@"SEP 6",@"SEP 7"]];
         self.barChart.rotateForXAxisText = true ;
+      
+      self.barChart.yLabelSum=5;
+      self.barChart.yMaxValue=100;
+      
         [self.barChart setYValues:@[@1,@24,@12,@18,@30,@10,@21]];
+//      self.barChart.yLabels = @[@0,@20,@40,@60];
         [self.barChart setStrokeColors:@[PNGreen,PNGreen,PNRed,PNGreen,PNGreen,PNYellow,PNGreen]];
         // Adding gradient
         self.barChart.barColorGradientStart = [UIColor blueColor];