//
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// JHRingChart.m
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// JHChartDemo
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//
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// Created by 简豪 on 16/7/5.
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// Copyright © 2016年 JH. All rights reserved.
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//
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#import "JHRingChart.h"
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#define k_COLOR_STOCK @[[UIColor colorWithRed:1.000 green:0.783 blue:0.371 alpha:1.000], [UIColor colorWithRed:1.000 green:0.562 blue:0.968 alpha:1.000],[UIColor colorWithRed:0.313 green:1.000 blue:0.983 alpha:1.000],[UIColor colorWithRed:0.560 green:1.000 blue:0.276 alpha:1.000],[UIColor colorWithRed:0.239 green:0.651 blue:0.170 alpha:1.000]]
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@interface JHRingChart ()
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//环图间隔 单位为π
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@property (nonatomic,assign)CGFloat itemsSpace;
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//数值和
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@property (nonatomic,assign) CGFloat totolCount;
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@property (nonatomic,assign) CGFloat redius;
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@end
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@implementation JHRingChart
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-(instancetype)initWithFrame:(CGRect)frame {
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if (self = [super initWithFrame:frame]) {
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self.chartOrigin = CGPointMake(CGRectGetWidth(self.frame) / 2, CGRectGetHeight(self.frame)/2);
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_redius = (CGRectGetHeight(self.frame) -60*k_Width_Scale)/4;
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_ringWidth = 40;
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}
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return self;
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}
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-(void)setValueDataArr:(NSArray *)valueDataArr{
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_valueDataArr = valueDataArr;
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[self configBaseData];
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}
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- (void)configBaseData{
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_totolCount = 0;
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_itemsSpace = (M_PI * 2.0 * 10 / 360)/_valueDataArr.count ;
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for (id obj in _valueDataArr) {
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_totolCount += [obj floatValue];
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}
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}
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//开始动画
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- (void)showAnimation{
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/* 动画开始前，应当移除之前的layer */
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for (CALayer *layer in self.layer.sublayers) {
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[layer removeFromSuperlayer];
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}
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CGFloat lastBegin = -M_PI/2;
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CGFloat totloL = 0;
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NSInteger i = 0;
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for (id obj in _valueDataArr) {
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CAShapeLayer *layer = [CAShapeLayer layer] ;
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UIBezierPath *path = [UIBezierPath bezierPath];
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layer.fillColor = [UIColor clearColor].CGColor;
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if (i<_fillColorArray.count) {
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layer.strokeColor =[_fillColorArray[i] CGColor];
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}else{
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layer.strokeColor =[k_COLOR_STOCK[i%k_COLOR_STOCK.count] CGColor];
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}
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CGFloat cuttentpace = [obj floatValue] / _totolCount * (M_PI * 2 - _itemsSpace * _valueDataArr.count);
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totloL += [obj floatValue] / _totolCount;
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[path addArcWithCenter:self.chartOrigin radius:_redius startAngle:lastBegin endAngle:lastBegin + cuttentpace clockwise:YES];
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layer.path = path.CGPath;
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[self.layer addSublayer:layer];
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layer.lineWidth = _ringWidth;
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CABasicAnimation *basic = [CABasicAnimation animationWithKeyPath:@"strokeEnd"];
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basic.fromValue = @(0);
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basic.toValue = @(1);
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basic.duration = 0.5;
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basic.fillMode = kCAFillModeForwards;
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[layer addAnimation:basic forKey:@"basic"];
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lastBegin += (cuttentpace+_itemsSpace);
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i++;
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}
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}
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-(void)drawRect:(CGRect)rect{
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CGContextRef contex = UIGraphicsGetCurrentContext();
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CGFloat lastBegin = 0;
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CGFloat longLen = _redius +30*k_Width_Scale;
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for (NSInteger i = 0; i<_valueDataArr.count; i++) {
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id obj = _valueDataArr[i];
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CGFloat currentSpace = [obj floatValue] / _totolCount * (M_PI * 2 - _itemsSpace * _valueDataArr.count);;
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NSLog(@"%f",currentSpace);
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CGFloat midSpace = lastBegin + currentSpace / 2;
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CGPoint begin = CGPointMake(self.chartOrigin.x + sin(midSpace) * _redius, self.chartOrigin.y - cos(midSpace)*_redius);
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CGPoint endx = CGPointMake(self.chartOrigin.x + sin(midSpace) * longLen, self.chartOrigin.y - cos(midSpace)*longLen);
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NSLog(@"%@%@",NSStringFromCGPoint(begin),NSStringFromCGPoint(endx));
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lastBegin += _itemsSpace + currentSpace;
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UIColor *color;
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if (_fillColorArray.count<_valueDataArr.count) {
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color = k_COLOR_STOCK[i%k_COLOR_STOCK.count];
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}else{
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color = _fillColorArray[i];
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}
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[self drawLineWithContext:contex andStarPoint:begin andEndPoint:endx andIsDottedLine:NO andColor:color];
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CGPoint secondP = CGPointZero;
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CGSize size = [[NSString stringWithFormat:@"%.02f%c",[obj floatValue] / _totolCount * 100,'%'] boundingRectWithSize:CGSizeMake(200, 100) options:NSStringDrawingUsesFontLeading attributes:@{NSFontAttributeName:[UIFont systemFontOfSize:10*k_Width_Scale]} context:nil].size;
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if (midSpace<M_PI) {
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secondP =CGPointMake(endx.x + 20*k_Width_Scale, endx.y);
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[self drawText:[NSString stringWithFormat:@"%.02f%c",[obj floatValue] / _totolCount * 100,'%'] andContext:contex atPoint:CGPointMake(secondP.x + 3, secondP.y - size.height / 2) WithColor:k_COLOR_STOCK[i] andFontSize:10*k_Width_Scale];
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}else{
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secondP =CGPointMake(endx.x - 20*k_Width_Scale, endx.y);
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[self drawText:[NSString stringWithFormat:@"%.02f%c",[obj floatValue] / _totolCount * 100,'%'] andContext:contex atPoint:CGPointMake(secondP.x - size.width - 3, secondP.y - size.height/2) WithColor:color andFontSize:10*k_Width_Scale];
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}
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[self drawLineWithContext:contex andStarPoint:endx andEndPoint:secondP andIsDottedLine:NO andColor:color];
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[self drawPointWithRedius:3*k_Width_Scale andColor:color andPoint:secondP andContext:contex];
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}
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}
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@end
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