YYXC_Student/jiaPei/PieView.h

//
//  PieView.h
//  饼状图
//
//  Created by mac on 14-3-31.
//  Copyright (c) 2014年 mac. All rights reserved.
//

#import <UIKit/UIKit.h>
@class PieView;
@protocol PieViewDelegate <NSObject>

- (CGFloat)centerCircleRadius;

@end



@protocol PieViewDataSource <NSObject>

@required
- (int)numberOfSlicesInPieChartView:(PieView *)pieChartView;
/**
 返回某个index的饼片的比例。0-100
 */
- (double)pieChartView:(PieView *)pieChartView valueForSliceAtIndex:(NSUInteger)index;
/**返回某个index饼片的颜色
 */
- (UIColor *)pieChartView:(PieView *)pieChartView colorForSliceAtIndex:(NSUInteger)index;

/**这个方法没有调用啊。
 */
//@optional
//- (NSString*)pieChartView:(PieView *)pieChartView titleForSliceAtIndex:(NSUInteger)index;

@end

@interface PieView : UIView
@property (nonatomic, assign) id <PieViewDataSource> datasource;
@property (nonatomic, assign) id <PieViewDelegate> delegate;
-(void)reloadData;

@end