text: //
  //  PNPieChart.h
  //  PNChartDemo
  //
  //  Created by Hang Zhang on 14-5-5.
  //  Copyright (c) 2014年 kevinzhow. All rights reserved.
  //
  
  #import <UIKit/UIKit.h>
  #import "PNPieChartDataItem.h"
  #import "PNGenericChart.h"
  #import "PNChartDelegate.h"
  
  @interface PNPieChart : PNGenericChart
  
  - (id)initWithFrame:(CGRect)frame items:(NSArray *)items;
  
  @property (nonatomic) NSArray *items;
  
  /** Default is 18-point Avenir Medium. */
  @property (nonatomic) UIFont  *descriptionTextFont;
  
  /** Default is white. */
  @property (nonatomic) UIColor *descriptionTextColor;
  
  /** Default is black, with an alpha of 0.4. */
  @property (nonatomic) UIColor *descriptionTextShadowColor;
  
  /** Default is CGSizeMake(0, 1). */
  @property (nonatomic) CGSize   descriptionTextShadowOffset;
  
  /** Default is 1.0. */
  @property (nonatomic) NSTimeInterval duration;
  
  /** Show only values, this is useful when legend is present */
  @property (nonatomic) BOOL showOnlyValues;
  
  /** Show absolute values not relative i.e. percentages */
  @property (nonatomic) BOOL showAbsoluteValues;
  
  /** Hide percentage labels less than cutoff value */
  @property (nonatomic, assign) CGFloat labelPercentageCutoff;
  
  /** Default YES. */
  @property (nonatomic) BOOL shouldHighlightSectorOnTouch;
  
  /** Current outer radius. Override recompute() to change this. **/
  @property (nonatomic) CGFloat outerCircleRadius;
  
  /** Current inner radius. Override recompute() to change this. **/
  @property (nonatomic) CGFloat innerCircleRadius;
  
  @property (nonatomic, weak) id<PNChartDelegate> delegate;
  
  /** Update chart items. Does not update chart itself. */
  - (void)updateChartData:(NSArray *)data;
  
  /** Multiple selection */
  @property (nonatomic, assign) BOOL enableMultipleSelection;
  
  /** show only tiles, not values or percentage */
  @property (nonatomic) BOOL hideValues;
  
  - (void)strokeChart;
  
  - (void)recompute;
  
  
  @end
  