Lots of new API for Bar Chart

-//
-//  PNBarChart.h
-//  PNChartDemo
-//
-//  Created by kevin on 11/7/13.
-//  Copyright (c) 2013年 kevinzhow. All rights reserved.
-//
-
-#import <UIKit/UIKit.h>
-#import "PNChartDelegate.h"
-
-#define chartMargin  10
-#define xLabelMargin 15
-#define yLabelMargin 15
-#define yLabelHeight 11
-#define xLabelHeight 20
-
-@interface PNBarChart : UIView
-
-/**
- * This method will call and stroke the line in animation
- */
-
-- (void)strokeChart;
-
-@property (nonatomic) NSArray *xLabels;
-@property (nonatomic) NSArray *yLabels;
-@property (nonatomic) NSArray *yValues;
-@property (nonatomic) CGFloat xLabelWidth;
-@property (nonatomic) int yValueMax;
-@property (nonatomic) UIColor *strokeColor;
-@property (nonatomic) NSArray *strokeColors;
-@property (nonatomic) UIColor *barBackgroundColor;
-@property (nonatomic) BOOL showLabel;
-
-@property (nonatomic, retain) id<PNChartDelegate> delegate;
-@end

-//
-//  PNBarChart.m
-//  PNChartDemo
-//
-//  Created by kevin on 11/7/13.
-//  Copyright (c) 2013年 kevinzhow. All rights reserved.
-//
-
-#import "PNBarChart.h"
-#import "PNColor.h"
-#import "PNChartLabel.h"
-#import "PNBar.h"
-
-@interface PNBarChart () {
-    NSMutableArray *_bars;
-    NSMutableArray *_labels;
-}
-
-- (UIColor *)barColorAtIndex:(NSUInteger)index;
-@end
-
-@implementation PNBarChart
-
-- (id)initWithFrame:(CGRect)frame
-{
-    self = [super initWithFrame:frame];
-
-    if (self) {
-        // Initialization code
-        self.backgroundColor = [UIColor whiteColor];
-        self.clipsToBounds   = YES;
-        _showLabel           = YES;
-        _barBackgroundColor  = PNLightGrey;
-        _labels              = [NSMutableArray array];
-        _bars                = [NSMutableArray array];
-    }
-
-    return self;
-}
-
-
-- (void)setYValues:(NSArray *)yValues
-{
-    _yValues = yValues;
-    [self setYLabels:yValues];
-
-    _xLabelWidth = (self.frame.size.width - chartMargin * 2) / [_yValues count];
-}
-
-
-- (void)setYLabels:(NSArray *)yLabels
-{
-    NSInteger max = 0;
-
-    for (NSString *valueString in yLabels) {
-        NSInteger value = [valueString integerValue];
-
-        if (value > max) {
-            max = value;
-        }
-    }
-
-    //Min value for Y label
-    if (max < 5) {
-        max = 5;
-    }
-
-    _yValueMax = (int)max;
-}
-
-
-- (void)setXLabels:(NSArray *)xLabels
-{
-    _xLabels = xLabels;
-
-    if (_showLabel) {
-        _xLabelWidth = (self.frame.size.width - chartMargin * 2) / [xLabels count];
-    }
-}
-
-
-- (void)setStrokeColor:(UIColor *)strokeColor
-{
-    _strokeColor = strokeColor;
-}
-
-
-- (void)strokeChart
-{
-    [self viewCleanupForCollection:_labels];
-
-    for (int index = 0; index < _xLabels.count; index++) {
-        NSString *labelText = _xLabels[index];
-        PNChartLabel *label = [[PNChartLabel alloc] initWithFrame:CGRectMake((index *  _xLabelWidth + chartMargin), self.frame.size.height - xLabelHeight - chartMargin, _xLabelWidth, xLabelHeight)];
-        [label setTextAlignment:NSTextAlignmentCenter];
-        label.text = labelText;
-        [_labels addObject:label];
-        [self addSubview:label];
-    }
-
-    [self viewCleanupForCollection:_bars];
-
-    CGFloat chartCavanHeight = self.frame.size.height - chartMargin * 2 - xLabelHeight * 2;
-    NSInteger index = 0;
-
-    for (NSString *valueString in _yValues) {
-        float value = [valueString floatValue];
-
-        float grade = (float)value / (float)_yValueMax;
-        PNBar *bar;
-
-        if (_showLabel) {
-            bar = [[PNBar alloc] initWithFrame:CGRectMake((index *  _xLabelWidth + chartMargin + _xLabelWidth * 0.25), self.frame.size.height - chartCavanHeight - xLabelHeight - chartMargin, _xLabelWidth * 0.5, chartCavanHeight)];
-        }
-        else {
-            bar = [[PNBar alloc] initWithFrame:CGRectMake((index *  _xLabelWidth + chartMargin + _xLabelWidth * 0.25), self.frame.size.height - chartCavanHeight, _xLabelWidth * 0.6, chartCavanHeight)];
-        }
-
-        bar.backgroundColor = _barBackgroundColor;
-        bar.barColor = [self barColorAtIndex:index];
-        bar.grade = grade;
-        bar.tag = index;        
-        [_bars addObject:bar];
-        [self addSubview:bar];
-
-        index += 1;
-    }
-}
-
-
-- (void)viewCleanupForCollection:(NSMutableArray *)array
-{
-    if (array.count) {
-        [array makeObjectsPerformSelector:@selector(removeFromSuperview)];
-        [array removeAllObjects];
-    }
-}
-
-
-#pragma mark - Class extension methods
-
-- (UIColor *)barColorAtIndex:(NSUInteger)index
-{
-    if ([self.strokeColors count] == [self.yValues count]) {
-        return self.strokeColors[index];
-    }
-    else {
-        return self.strokeColor;
-    }
-}
-
-
-#pragma mark - Touch detection
-
-- (void)touchesBegan:(NSSet *)touches withEvent:(UIEvent *)event
-{
-    [self touchPoint:touches withEvent:event];
-    [super touchesBegan:touches withEvent:event];
-}
-
-
-- (void)touchPoint:(NSSet *)touches withEvent:(UIEvent *)event
-{
-    //Get the point user touched
-    UITouch *touch = [touches anyObject];
-    CGPoint touchPoint = [touch locationInView:self];
-    UIView *subview = [self hitTest:touchPoint withEvent:nil];
-    
-    if ([subview isKindOfClass:[PNBar class]] && [self.delegate respondsToSelector:@selector(userClickedOnBarCharIndex:)]) {
-        [self.delegate userClickedOnBarCharIndex:subview.tag];
-    }
-}
-
-
-@end

@@ -16,4 +16,6 @@
 @property (nonatomic) float grade;
 @property (nonatomic) CAShapeLayer *chartLine;
 @property (nonatomic) UIColor *barColor;
+@property (nonatomic) CGFloat barRadius;
+
 @end

@@ -24,12 +24,18 @@
         _chartLine.strokeEnd    = 0.0;
         self.clipsToBounds      = YES;
         [self.layer addSublayer:_chartLine];
-        self.layer.cornerRadius = 2.0;
+        self.barRadius = 2.0;
     }
 
     return self;
 }
 
+-(void)setBarRadius:(CGFloat)barRadius
+{
+    _barRadius = barRadius;
+    self.layer.cornerRadius = _barRadius;
+}
+
 
 - (void)setGrade:(float)grade
 {

+//
+//  PNBarChart.h
+//  PNChartDemo
+//
+//  Created by kevin on 11/7/13.
+//  Copyright (c) 2013年 kevinzhow. All rights reserved.
+//
+
+#import <UIKit/UIKit.h>
+#import "PNChartDelegate.h"
+
+#define xLabelMargin 15
+#define yLabelMargin 15
+#define yLabelHeight 11
+#define xLabelHeight 20
+
+typedef NSString *(^PNyLabelFromatter)(CGFloat yLabelValue);
+
+@interface PNBarChart : UIView
+
+/**
+ * This method will call and stroke the line in animation
+ */
+
+- (void)strokeChart;
+
+@property (nonatomic) NSArray *xLabels;
+@property (nonatomic) NSArray *yLabels;
+@property (nonatomic) NSArray *yValues;
+@property (nonatomic) CGFloat xLabelWidth;
+@property (nonatomic) int yValueMax;
+@property (nonatomic) UIColor *strokeColor;
+@property (nonatomic) NSArray *strokeColors;
+
+
+/*
+ chartMargin changes chart margin
+ */
+@property (nonatomic) CGFloat yChartLabelWidth;
+
+/*
+ yLabelFormatter will format the ylabel text
+ */
+
+@property (copy) PNyLabelFromatter yLabelFormatter;
+
+/*
+ chartMargin changes chart margin
+ */
+@property (nonatomic) CGFloat chartMargin;
+
+/*
+ showLabelDefines if the Labels should be deplay
+ */
+@property (nonatomic) BOOL showLabel;
+
+/*
+ showChartBorder if the chart border Line should be deplay
+ */
+@property (nonatomic) BOOL showChartBorder;
+
+/*
+ chartBottomLine the Line at the chart bottom
+ */
+@property (nonatomic) CAShapeLayer * chartBottomLine;
+
+/*
+ chartLeftLine the Line at the chart left
+ */
+@property (nonatomic) CAShapeLayer * chartLeftLine;
+
+/*
+ barRadius changes the bar corner radius
+ */
+@property (nonatomic) CGFloat barRadius;
+
+/*
+ barWidth changes the width of the bar
+ */
+@property (nonatomic) CGFloat barWidth;
+
+/*
+ labelMarginTop changes the width of the bar
+ */
+@property (nonatomic) CGFloat labelMarginTop;
+
+/*
+ barBackgroundColor changes the bar background color
+ */
+@property (nonatomic) UIColor * barBackgroundColor;
+
+/*
+ labelTextColor changes the bar label text color
+ */
+@property (nonatomic) UIColor * labelTextColor;
+
+/*
+ labelFont changes the bar label font
+ */
+@property (nonatomic) UIFont * labelFont;
+
+/*
+ xLabelSkip define the label skip number
+ */
+@property (nonatomic) NSInteger xLabelSkip;
+
+/*
+ yLabelSum define the label skip number
+ */
+@property (nonatomic) NSInteger yLabelSum;
+
+/*
+ yMaxValue define the max value of the chart
+ */
+@property (nonatomic) CGFloat yMaxValue;
+
+@property (nonatomic, retain) id<PNChartDelegate> delegate;
+
+@end

@@ -17,13 +17,10 @@
 
     if (self) {
         // Initialization code
-        [self setLineBreakMode:NSLineBreakByWordWrapping];
-        [self setMinimumScaleFactor:11.0f];
-        [self setNumberOfLines:0];
+
         [self setFont:[UIFont boldSystemFontOfSize:11.0f]];
-        [self setTextColor:PNDeepGrey];
         self.backgroundColor = [UIColor clearColor];
-        [self setTextAlignment:NSTextAlignmentLeft];
+        [self setTextAlignment:NSTextAlignmentCenter];
         self.userInteractionEnabled = YES;
     }
 

@@ -11,4 +11,5 @@
 + (PNLineChartDataItem *)dataItemWithY:(CGFloat)y;
 
 @property (readonly) CGFloat y; // should be within the y range
+
 @end

@@ -106,6 +106,12 @@
         
         PNBarChart * barChart = [[PNBarChart alloc] initWithFrame:CGRectMake(0, 135.0, SCREEN_WIDTH, 200.0)];
         barChart.backgroundColor = [UIColor clearColor];
+        barChart.yLabelFormatter = ^(CGFloat yValue){
+            CGFloat yValueParsed = yValue;
+            NSString * labelText = [NSString stringWithFormat:@"%1.f",yValueParsed];
+            return labelText;
+        };
+        barChart.labelMarginTop = 5.0;
         [barChart setXLabels:@[@"SEP 1",@"SEP 2",@"SEP 3",@"SEP 4",@"SEP 5",@"SEP 6",@"SEP 7"]];
         [barChart setYValues:@[@1,@24,@12,@18,@30,@10,@21]];
         [barChart setStrokeColors:@[PNGreen,PNGreen,PNRed,PNGreen,PNGreen,PNYellow,PNGreen]];
@@ -129,18 +135,13 @@
         circleChartLabel.font = [UIFont fontWithName:@"Avenir-Medium" size:23.0];
         circleChartLabel.textAlignment = NSTextAlignmentCenter;
         
-        PNCircleChart * circleChart = [[PNCircleChart alloc] initWithFrame:CGRectMake(0, 80.0, SCREEN_WIDTH, 100.0) andTotal:[NSNumber numberWithInt:100] andCurrent:[NSNumber numberWithInt:60] andClockwise:YES andShadow:NO];
+        PNCircleChart * circleChart = [[PNCircleChart alloc] initWithFrame:CGRectMake(0, 80.0, SCREEN_WIDTH, 100.0) andTotal:[NSNumber numberWithInt:100] andCurrent:[NSNumber numberWithInt:60] andClockwise:YES andShadow:YES];
         circleChart.backgroundColor = [UIColor clearColor];
         [circleChart setStrokeColor:PNGreen];
         [circleChart strokeChart];
         
-        PNCircleChart * circleChart2 = [[PNCircleChart alloc] initWithFrame:CGRectMake(0, 80.0, SCREEN_WIDTH, 100.0) andTotal:[NSNumber numberWithInt:100] andCurrent:[NSNumber numberWithInt:90] andClockwise:YES andShadow:YES];
-        circleChart2.backgroundColor = [UIColor clearColor];
-        [circleChart2 setStrokeColor:PNBlue];
-        [circleChart2 strokeChart];
-        
         [viewController.view addSubview:circleChartLabel];
-        [viewController.view addSubview:circleChart2];
+
         [viewController.view addSubview:circleChart];
         viewController.title = @"Circle Chart";