折线图.png
柱状图.png
//
// LYChartView.h
// LYChartView
//
// Created by HENAN on 17/1/6.
// Copyright © 2017年 LYS. All rights reserved.
//
#import <UIKit/UIKit.h>
@class LYChartView;
typedef NS_ENUM(NSInteger,LYChartViewType) {
LYChartViewTypeLine, // 折线
LYChartViewTypeHistogram // 柱状
};
@interface LYChartView : UIView
/*
* 功能:重写初始化方法
* 参数:frame,column,type,title,unit
* 返回:图表对象
*/
- (instancetype)initWithFrame:(CGRect)frame
column:(NSInteger)column
row:(NSInteger)row
type:(LYChartViewType)type
title:(NSString *)title
unit:(NSString *)unit;
/*
* 功能:设置是否动画
* 参数animation:是否动画
*/
- (void)customAnimation:(BOOL)animation;
/*
* 功能:更新下标字体大小
* 参数font:字体大小
*/
- (void)customIndexFont:(CGFloat)font;
/*
* 功能:更新标题字体大小
* 参数font:字体大小
*/
- (void)customTitleFont:(CGFloat)font;
/*
* 功能:更新填充样式
* 参数color:返回颜色回调
*/
- (void)customColor:(UIColor *(^)(NSInteger index,LYChartViewType type))color;
/*
* 功能:更改类型
* 参数type:要更改的类型
*/
- (void)customType:(LYChartViewType)type;
/*
* 功能:更新frame
* 参数frame:更改的frame
*/
- (void)customFrame:(CGRect)frame;
/*
* 功能:设置标题的位置
* 参数alignment:标题的位置
*/
- (void)customTitleAlignment:(NSTextAlignment)alignment;
/*
* 功能:设置内边距
* 参数edgeInsets:内边距
*/
- (void)customEdgeInsets:(UIEdgeInsets)edgeInsets;
/*
* 功能:设置下标
* 参数data:下标数组
*/
- (void)customColumnIndexData:(NSArray *)data;
/*
* 功能:设置数据
* 参数data:数值数组
*/
- (void)customValueData:(NSArray *)data;
/*
* 功能:柱状图点击事件回调
* 参数action:柱状图点击时间回调
*/
- (void)histogramSelectAction:(void(^)(NSInteger index))action;
/*
* 功能:设置右上角图片视图
* 参数action:图表右上角视图
*/
- (void)customRightTopView:(void(^)(UIView *view))action;
/*
* 功能:刷新数据(以上所有调整,要想展示在图表上,就必须调用这个刷新方法,否则不起效)
*/
- (void)reloadData;
@end
//
// LYChartView.m
// LYChartView
//
// Created by HENAN on 17/1/6.
// Copyright © 2017年 LYS. All rights reserved.
//
#import "LYChartView.h"
@implementation LYChartView
{
CGRect _frame;
NSInteger _column;
NSInteger _row;
CGFloat _columnSpace;
CGFloat _rowSpace;
LYChartViewType _type;
CGPoint _zeroPoint;
CGFloat _width;
CGFloat _height;
UIEdgeInsets _edgeInsets;
NSInteger _valueNum;
NSArray *_valueDataAry;
NSArray *_columnIndexAry;
NSArray *_rowIndexAry;
NSString *_title;
NSString *_unit;
void(^_distogramSelectAction)(NSInteger index);
UIView *_view;
NSTextAlignment _alignment;
CGFloat _indexFont;
CGFloat _titleFont;
UIColor *(^_histogramColor)(NSInteger index,LYChartViewType type);
UIColor *_fillColor;
NSMutableArray *_histogramLayerAry;
NSMutableArray *_histogramLayerHeightAry;
NSMutableArray *_histogramLayerCurrentHeightAry;
NSMutableArray *_histogramLayerIndexValueAry;
CADisplayLink *_displayLink;
CAShapeLayer *_lineLayer;
CAShapeLayer *_chartOverstriking;
NSMutableArray *_linePointAry;
NSMutableArray *_lineCurrentPointAry;
CGFloat _scale;
BOOL _animation;
}
// 初始化创建方法
- (instancetype)initWithFrame:(CGRect)frame column:(NSInteger)column row:(NSInteger)row type:(LYChartViewType)type title:(NSString *)title unit:(NSString *)unit
{
self = [super initWithFrame:frame];
if (self) {
_animation = YES;
if (title) {
_edgeInsets = UIEdgeInsetsMake(35, 35, 30, 25);
_titleFont = 12;
}else {
_edgeInsets = UIEdgeInsetsMake(20, 35, 30, 25);
}
_indexFont = 8;
_fillColor = [[UIColor colorWithRed:24 / 255.0 green:171 / 255.0 blue:255 / 255.0 alpha:1.0] colorWithAlphaComponent:0.5];
[self refreshArgument:frame valueNum:column row:row type:type title:title unit:unit alignment:NSTextAlignmentCenter];
}
return self;
}
// 更新下标字体大小
- (void)customIndexFont:(CGFloat)font{
_indexFont = font;
}
// 更新标题字体大小
- (void)customTitleFont:(CGFloat)font{
if (_title) {
_edgeInsets = UIEdgeInsetsMake(_edgeInsets.top + (font - _titleFont), _edgeInsets.left, _edgeInsets.bottom, _edgeInsets.right);
[self refreshArgument:_frame valueNum:_valueNum row:_row type:_type title:_title unit:_unit alignment:_alignment];
_titleFont = font;
}
}
// 更新参数
- (void)refreshArgument:(CGRect)frame valueNum:(NSInteger)valueNum row:(NSInteger)row type:(LYChartViewType)type title:(NSString *)title unit:(NSString *)unit alignment:(NSTextAlignment)alignment{
_frame = frame;
_row = row;
_title = title;
_unit = unit;
_type = type;
_valueNum = valueNum;
_alignment = alignment;
if (_type == LYChartViewTypeLine) {_column = _valueNum - 1;}
if (_type == LYChartViewTypeHistogram) {_column = _valueNum;}
_width = CGRectGetWidth(_frame) - _edgeInsets.left - _edgeInsets.right;
_height = CGRectGetHeight(_frame) - _edgeInsets.top - _edgeInsets.bottom;
_zeroPoint = CGPointMake(_edgeInsets.left,CGRectGetHeight(_frame) - _edgeInsets.bottom);
_columnSpace = _width / _column;
_rowSpace = _height / _row;
}
// 更改类型
- (void)customType:(LYChartViewType)type{
[self refreshArgument:_frame valueNum:_valueNum row:_row type:type title:_title unit:_unit alignment:_alignment];
}
// 更新frame
- (void)customFrame:(CGRect)frame{
[self refreshArgument:frame valueNum:_valueNum row:_row type:_type title:_title unit:_unit alignment:_alignment];
self.frame = frame;
}
// 设置标题的位置
- (void)customTitleAlignment:(NSTextAlignment)alignment{
[self refreshArgument:_frame valueNum:_valueNum row:_row type:_type title:_title unit:_unit alignment:alignment];
}
// 设置右上角图片视图
- (void)customRightTopView:(void(^)(UIView *view))action{
if (action) {
if (!_view) {
_view = [[UIView alloc] initWithFrame:CGRectMake(2, 2, _frame.size.width - 4, 20)];
_view.backgroundColor = [UIColor clearColor];
[self addSubview:_view];
}
action(_view);
}
}
// 设置列下标
- (void)customColumnIndexData:(NSArray *)data{
if (data) {
NSMutableArray *tempAry = [NSMutableArray array];
for (id obj in data) {
[tempAry addObject:[NSString stringWithFormat:@"%@",obj]];
}
_columnIndexAry = [NSArray arrayWithArray:tempAry];
}
}
// 设置数据和行下标
- (void)customValueData:(NSArray *)data{
if (data) {
NSMutableArray *tempAry = [NSMutableArray array];
for (id obj in data) {
[tempAry addObject:[NSString stringWithFormat:@"%@",obj]];
}
_valueDataAry = [NSArray arrayWithArray:tempAry];
CGFloat space_Value = [self spaceValue];
NSMutableArray *rowIndexAry = [NSMutableArray array];
for (int i = 0; i <= _row; i++) {
NSInteger index = i * space_Value;
[rowIndexAry addObject:[NSString stringWithFormat:@"%ld",index]];
}
_rowIndexAry = [NSArray arrayWithArray:rowIndexAry];
}
}
// 设置内边距
- (void)customEdgeInsets:(UIEdgeInsets)edgeInsets{
_edgeInsets = edgeInsets;
[self refreshArgument:_frame valueNum:_valueNum row:_row type:_type title:_title unit:_unit alignment:_alignment];
}
// 更新柱状图填充颜色
- (void)customColor:(UIColor *(^)(NSInteger index,LYChartViewType type))color{
if (color) {
_histogramColor = color;
}
}
// 刷新数据
- (void)reloadData{
[self customSubViews];
}
// 开始布局
- (void)customSubViews{
// 移除所有layer
NSArray *tempAry = [NSArray arrayWithArray:self.layer.sublayers];
for (CALayer *layer in tempAry) {
[layer removeFromSuperlayer];
}
// 设置坐标轴
[self customAxis];
// 设置列和行线,以及遮盖
[self customColumn_Row_CoverView];
// 设置单位
[self customUNITAndTitle];
// 添加折线或者柱状图
[self addChartOrHistogram:_animation];
if (_view) { // 防止上面的移除,会清楚掉这个view
[self addSubview:_view];
}
}
- (void)customAnimation:(BOOL)animation{
_animation = animation;
}
// 添加折线或者柱状图
- (void)addChartOrHistogram:(BOOL)animation{
CGFloat space_Value = [self spaceValue];
_scale = space_Value / _rowSpace; // 比例
if (_type == LYChartViewTypeLine) {
if (animation) {
if (_displayLink) {
[_displayLink invalidate];
_displayLink = nil;
}
_displayLink = [CADisplayLink displayLinkWithTarget:self selector:@selector(animationDisPlayLine)];
[_displayLink addToRunLoop:[NSRunLoop currentRunLoop] forMode:(NSDefaultRunLoopMode)];
}
NSMutableArray *pointAry = [NSMutableArray array];
for (int i = 0; i < [_valueDataAry count]; i++) {
CGPoint point = CGPointMake(_zeroPoint.x + (i * _columnSpace),_zeroPoint.y - ([[_valueDataAry objectAtIndex:i] floatValue] / _scale));
[pointAry addObject:[NSValue valueWithCGPoint:point]];
}
// 绘制折线
if (_histogramColor) {
_fillColor = _histogramColor(0,_type);
}
_lineLayer = nil;
_linePointAry = [NSMutableArray arrayWithArray:pointAry];
_lineCurrentPointAry = [NSMutableArray array];
for (NSValue *value in pointAry) {
CGPoint point = [value CGPointValue];
point.y = _zeroPoint.y;
[_lineCurrentPointAry addObject:[NSValue valueWithCGPoint:point]];
}
_lineLayer = [CAShapeLayer layer];
_lineLayer.fillColor = _fillColor.CGColor;
UIBezierPath *layerPath = [self createChartLayer:pointAry];
_lineLayer.path = layerPath.CGPath;
[self.layer addSublayer:_lineLayer];
_chartOverstriking = [CAShapeLayer layer];
_chartOverstriking.strokeColor = _fillColor.CGColor;
_chartOverstriking.path = [self createChartOverstrikingLine:pointAry].CGPath;
[self.layer addSublayer:_chartOverstriking];
// 绘制圆点
for (NSValue *pointValue in pointAry) {
CAShapeLayer *dot = [self createDot:[pointValue CGPointValue] color:[UIColor colorWithRed:24 / 255.0 green:171 / 255.0 blue:255 / 255.0 alpha:1.0]];
[self.layer addSublayer:dot];
}
// 绘制标记值
BOOL adjust = NO;
for (int i = 0;i < pointAry.count;i++) {
if ((i == [_valueDataAry count] - 1) && ([[NSString stringWithFormat:@"%@",_valueDataAry[i]] length] > 5)) {
adjust = YES;
}
CATextLayer *text = [self createValueLineTextLayer:[pointAry[i] CGPointValue] text:_valueDataAry[i] adjust:adjust];
[self.layer addSublayer:text];
}
}
if (_type == LYChartViewTypeHistogram) {
if (animation) {
if (_displayLink) {
[_displayLink invalidate];
_displayLink = nil;
}
_displayLink = [CADisplayLink displayLinkWithTarget:self selector:@selector(animationDisPlayHistogram)];
[_displayLink addToRunLoop:[NSRunLoop currentRunLoop] forMode:(NSDefaultRunLoopMode)];
}
CGFloat width = _columnSpace - 2;
_histogramLayerAry = [NSMutableArray array];
_histogramLayerHeightAry = [NSMutableArray array];
_histogramLayerCurrentHeightAry = [NSMutableArray array];
_histogramLayerIndexValueAry = [NSMutableArray array];
// 绘制柱状图
for (int i = 0; i < [_valueDataAry count]; i++) {
CGPoint point = CGPointMake(_zeroPoint.x + (i * _columnSpace) + 1,_zeroPoint.y);
UIColor *fillColor = nil;
if (_histogramColor) {
fillColor = _histogramColor(i,_type);
}else {
fillColor = _fillColor;
}
CAShapeLayer *layer = [CAShapeLayer layer];
[_histogramLayerAry addObject:layer];
[_histogramLayerHeightAry addObject:[NSNumber numberWithFloat:[[_valueDataAry objectAtIndex:i] floatValue] / _scale]];
[_histogramLayerCurrentHeightAry addObject:@(0)];
layer.fillColor = fillColor.CGColor;
UIBezierPath *path = [self createHistogram:point width:width height:[[_valueDataAry objectAtIndex:i] floatValue] / _scale];
layer.path = path.CGPath;
[self.layer addSublayer:layer];
CATextLayer *text = [self createValueHistogramLayer:CGPointMake(point.x + (width / 2.0), point.y - [[_valueDataAry objectAtIndex:i] floatValue] / _scale) text:_valueDataAry[i]];
[_histogramLayerIndexValueAry addObject:text];
if (animation) {
text.opacity = 0;
}else {
text.opacity = 1;
}
[self.layer addSublayer:text];
}
}
}
// 动态更改折线路径
- (void)animationDisPlayLine{
for (int i = 0; i < [_linePointAry count]; i++) {
CGFloat last_y = [[_linePointAry objectAtIndex:i] CGPointValue].y;
CGFloat current_y = [[_lineCurrentPointAry objectAtIndex:i] CGPointValue].y;
CGFloat speed = (last_y - current_y) / 10;
_lineCurrentPointAry[i] = [NSValue valueWithCGPoint:CGPointMake([_lineCurrentPointAry[i] CGPointValue].x, current_y + speed)];
}
UIBezierPath *linePath = [self createChartLayer:_lineCurrentPointAry];
_lineLayer.path = linePath.CGPath;
_chartOverstriking.path = [self createChartOverstrikingLine:_lineCurrentPointAry].CGPath;
BOOL success = YES;
for (int i = 0; i < [_lineCurrentPointAry count]; i++) {
NSString *currentStr = [NSString stringWithFormat:@"%.2f",[[_lineCurrentPointAry objectAtIndex:i] CGPointValue].y];
CGFloat current = [currentStr floatValue];
NSString *lastStr = [NSString stringWithFormat:@"%.2f",[[_linePointAry objectAtIndex:i] CGPointValue].y];
CGFloat last = [lastStr floatValue];
if (current > last) {
success = NO;
}
}
if (success) {
[_displayLink invalidate];
_displayLink = nil;
_linePointAry = nil;
_lineCurrentPointAry = nil;
}
}
// 动态更改路径
- (void)animationDisPlayHistogram{
CGFloat width = _columnSpace - 2;
for (int i = 0; i < [_histogramLayerCurrentHeightAry count]; i++) {
CGFloat currentHeight = [_histogramLayerCurrentHeightAry[i] floatValue];
CGFloat lastHeight = [_histogramLayerHeightAry[i] floatValue];
CGFloat speed = ceilf((lastHeight - currentHeight) / 10);
_histogramLayerCurrentHeightAry[i] = [NSNumber numberWithFloat:currentHeight + speed];
}
for (int i = 0; i < [_histogramLayerAry count]; i++) {
CGPoint point = CGPointMake(_zeroPoint.x + (i * _columnSpace) + 1,_zeroPoint.y);
UIBezierPath *path = [self createHistogram:point width:width height:[_histogramLayerCurrentHeightAry[i] floatValue]];
[[_histogramLayerAry objectAtIndex:i] setPath:path.CGPath];
}
BOOL success = YES;
for (int i = 0; i < [_histogramLayerHeightAry count]; i++) {
if ([[_histogramLayerCurrentHeightAry objectAtIndex:i] floatValue] < [[_histogramLayerHeightAry objectAtIndex:i] floatValue]) {
success = NO;
}
}
if (success) {
[_displayLink invalidate];
_displayLink = nil;
for (CATextLayer *text in _histogramLayerIndexValueAry) {
text.opacity = 1;
}
_histogramLayerAry = nil;
_histogramLayerHeightAry = nil;
_histogramLayerCurrentHeightAry = nil;
_histogramLayerIndexValueAry = nil;
}
}
// 获取数据最大值,并计算每一行间隔值
- (CGFloat)spaceValue{
if ([_unit isEqualToString:@"%"]) {
return 20;
}
CGFloat minValue = MAXFLOAT;
CGFloat maxValue = -MAXFLOAT;
for (int i = 0; i < [_valueDataAry count]; i++) {
if ([_valueDataAry[i] floatValue] > maxValue) {
maxValue = [_valueDataAry[i] floatValue];
}
if ([_valueDataAry[i] floatValue] < minValue) {
minValue = [_valueDataAry[i] floatValue];
}
}
int max = (int)[self getNumber:maxValue];
CGFloat space_Value = 0;
if (max >= 10) {
NSInteger tenValue = 1;
while (max / 10) {
max = max / 10;
tenValue *= 10;
}
space_Value = ceil((CGFloat)((max + 1) * tenValue) / _row); // y轴间隔数值(真实数值)
}
else if (max >= 1 && max < 10) {
space_Value = 2;
}
else if (max >= 0 && max < 1) {
space_Value = 1;
}
if (space_Value == 0) {space_Value = 1;}
return space_Value;
}
// 只取小数点之前的数字
- (CGFloat)getNumber:(CGFloat)value{
NSString *string = [NSString stringWithFormat:@"%f",value];
if (![[NSMutableString stringWithString:string] containsString:@"."]) {
return value;
}
return [[[string componentsSeparatedByString:@"."] firstObject] floatValue];
}
// 设置单位和标题
- (void)customUNITAndTitle{
if (_unit) {
CATextLayer *textLayer = [self createTextUNITLayer:CGPointMake(_edgeInsets.left / 2.0, _zeroPoint.y - _height - 2) text:[NSString stringWithFormat:@"单位:%@",_unit]];
[self.layer addSublayer:textLayer];
}
if (_title) {
CATextLayer *textLayer = nil;
if (_alignment == NSTextAlignmentCenter) {
textLayer = [self createTitleLayer:CGPointMake(CGRectGetWidth(_frame) / 2.0, 2) text:_title];
}
if (_alignment == NSTextAlignmentLeft) {
textLayer = [self createTitleLayer:CGPointMake(2, 2) text:_title];
}
if (_alignment == NSTextAlignmentRight) {
textLayer = [self createTitleLayer:CGPointMake(CGRectGetWidth(_frame) - 2, 2) text:_title];
}
[self.layer addSublayer:textLayer];
}
}
// 设置列和行线,以及遮盖
- (void)customColumn_Row_CoverView{
// 设置列线
for (int i = 1; i <= _column; i++) {
CAShapeLayer *axisVertical = [self createVerticalLine:CGPointMake(_zeroPoint.x + (_columnSpace * i), _zeroPoint.y) height:_height color:[[UIColor lightGrayColor] colorWithAlphaComponent:0.1] lineWidth:0.5];
[self.layer addSublayer:axisVertical];
}
// 设置下标数值
for (int i = 0; i < [_columnIndexAry count]; i++) {
if (_type == LYChartViewTypeLine) {
CGPoint point = CGPointMake(_zeroPoint.x + (_columnSpace * i), _zeroPoint.y);
CATextLayer *text = [self createTextLayer:point text:_columnIndexAry[i]];
[self.layer addSublayer:text];
}
if (_type == LYChartViewTypeHistogram) {
CGPoint point = CGPointMake(_zeroPoint.x + (_columnSpace * i) + _columnSpace / 2.0, _zeroPoint.y);
CATextLayer *text = [self createTextLayer:point text:_columnIndexAry[i]];
[self.layer addSublayer:text];
}
}
// 设置水平线
for (int i = 1; i <= _row; i++) {
CAShapeLayer *axisHorizontal = [self createHorizontalLine:CGPointMake(_zeroPoint.x, _zeroPoint.y - (_rowSpace * i)) width:_width color:[[UIColor lightGrayColor] colorWithAlphaComponent:0.1] lineHeight:0.5];
[self.layer addSublayer:axisHorizontal];
}
// 设置水平下标值
for (int i = 1; i < [_rowIndexAry count]; i++) {
CGPoint point = CGPointMake(_zeroPoint.x, _zeroPoint.y - (i * _rowSpace));
NSString *text = [NSString stringWithFormat:@"%@",_rowIndexAry[i]];
CATextLayer *textLayer = [self createHorizontalTextLayer:point text:text];
[self.layer addSublayer:textLayer];
}
// 设置遮盖
for (int i = 1; i <= _row; i++) {
if (i % 2 != 0) {
CAShapeLayer *coverLayer = [self createCoverViewPosition:CGPointMake(_zeroPoint.x, _zeroPoint.y - (_rowSpace * i)) width:_width height:_rowSpace color:[[UIColor lightGrayColor] colorWithAlphaComponent:0.05]];
[self.layer addSublayer:coverLayer];
}
}
}
// 设置坐标轴
- (void)customAxis{
UIColor *color = [UIColor lightGrayColor];
CGFloat lineWidth = 1;
// 创建X轴
CAShapeLayer *axis_X = [self createHorizontalLine:_zeroPoint width:_width color:color lineHeight:lineWidth];
[self.layer addSublayer:axis_X];
// 创建Y轴
CAShapeLayer *axis_Y = [self createVerticalLine:_zeroPoint height:_height color:color lineWidth:lineWidth];
[self.layer addSublayer:axis_Y];
}
// 创建竖线
- (CAShapeLayer *)createVerticalLine:(CGPoint)bottomPoint height:(CGFloat)height color:(UIColor *)color lineWidth:(CGFloat)lineWidth{
CAShapeLayer *line = [CAShapeLayer layer];
line.bounds = CGRectMake(0, 0, lineWidth, height);
line.position = CGPointMake(bottomPoint.x, bottomPoint.y - (height / 2.0));
line.backgroundColor = color.CGColor;
return line;
}
// 创建水平线
- (CAShapeLayer *)createHorizontalLine:(CGPoint)leftPoint width:(CGFloat)width color:(UIColor *)color lineHeight:(CGFloat)lineHeight{
CAShapeLayer *line = [CAShapeLayer layer];
line.bounds = CGRectMake(0, 0, width, lineHeight);
line.position = CGPointMake(leftPoint.x + (width / 2.0), leftPoint.y);
line.backgroundColor = color.CGColor;
return line;
}
// 创建遮盖
- (CAShapeLayer *)createCoverViewPosition:(CGPoint)positionPoint width:(CGFloat)width height:(CGFloat)height color:(UIColor *)color{
CAShapeLayer *layer = [CAShapeLayer layer];
layer.bounds = CGRectMake(0, 0, width, height);
layer.position = CGPointMake(positionPoint.x + (width / 2.0), positionPoint.y + (height / 2.0));
layer.backgroundColor = color.CGColor;
return layer;
}
// 创建折线
- (UIBezierPath *)createChartLayer:(NSArray<NSValue *> *)points{
if (points && [points count]) {
UIBezierPath *layerPath = [UIBezierPath bezierPath];
[layerPath moveToPoint:[[points firstObject] CGPointValue]];
for (int i = 1; i < points.count; i++) {
[layerPath addLineToPoint:[points[i] CGPointValue]];
}
[layerPath addLineToPoint:CGPointMake([[points lastObject] CGPointValue].x, _zeroPoint.y)];
[layerPath addLineToPoint:_zeroPoint];
return layerPath;
}
return nil;
}
// 创建折线加粗线
- (UIBezierPath *)createChartOverstrikingLine:(NSArray<NSValue *> *)points{
UIBezierPath *layerPath = [UIBezierPath bezierPath];
[layerPath moveToPoint:[[points firstObject] CGPointValue]];
for (int i = 1; i < points.count; i++) {
[layerPath addLineToPoint:[points[i] CGPointValue]];
}
for (int i = (int)(points.count - 1); i > 0; i--) {
[layerPath addLineToPoint:[points[i] CGPointValue]];
}
return layerPath;
}
// 创建圆点
- (CAShapeLayer *)createDot:(CGPoint)center color:(UIColor *)color{
CAShapeLayer *dot = [CAShapeLayer layer];
dot.bounds = CGRectMake(0, 0, 5, 5);
dot.cornerRadius = 2.5;
dot.position = center;
dot.backgroundColor = color.CGColor;
return dot;
}
// 创建柱状图
- (UIBezierPath *)createHistogram:(CGPoint)positionPoint width:(CGFloat)width height:(CGFloat)height{
UIBezierPath *path = [UIBezierPath bezierPath];
[path moveToPoint:CGPointMake(positionPoint.x , _zeroPoint.y)];
[path addLineToPoint:CGPointMake(positionPoint.x + width, _zeroPoint.y)];
[path addLineToPoint:CGPointMake(positionPoint.x + width, _zeroPoint.y - height)];
[path addLineToPoint:CGPointMake(positionPoint.x, _zeroPoint.y - height)];
return path;
}
// 创建下标标题
- (CATextLayer *)createTextLayer:(CGPoint)positionPoint text:(NSString *)text{
CATextLayer *textLayer = [CATextLayer layer];
CGRect rect = [self ly_rectWithSize:CGSizeMake(100, 100) attributes:@{NSFontAttributeName:[UIFont systemFontOfSize:_indexFont]} forStr:text];
textLayer.string = text;
textLayer.foregroundColor = [UIColor lightGrayColor].CGColor;
textLayer.position = CGPointMake(positionPoint.x, positionPoint.y + hypot(rect.size.width, rect.size.height) / 2.0 + 5);
textLayer.fontSize = _indexFont;
textLayer.bounds = CGRectMake(0, 0, rect.size.width, rect.size.height);
textLayer.alignmentMode = kCAAlignmentCenter;
textLayer.contentsScale = [[UIScreen mainScreen] scale];
textLayer.transform = CATransform3DRotate(textLayer.transform, 1, 0, 0,(3.14159265359 * -20)/ 180);
return textLayer;
}
// 获取字符串在指定区域的rect
- (CGRect)ly_rectWithSize:(CGSize)size attributes:(NSDictionary<NSString *,id> *)attributes forStr:(NSString *)string{
NSStringDrawingOptions options = NSStringDrawingUsesLineFragmentOrigin | NSStringDrawingUsesFontLeading;
CGRect rect = [string boundingRectWithSize:size options:options attributes:attributes context:nil];
return rect;
}
// 创建横坐标标题
- (CATextLayer *)createHorizontalTextLayer:(CGPoint)positionPoint text:(NSString *)text{
CATextLayer *textLayer = [CATextLayer layer];
CGRect rect = [self ly_rectWithSize:CGSizeMake(100, 100) attributes:@{NSFontAttributeName:[UIFont systemFontOfSize:_indexFont]} forStr:text];
textLayer.string = text;
textLayer.foregroundColor = [UIColor lightGrayColor].CGColor;
textLayer.position = CGPointMake(positionPoint.x - (rect.size.width / 2.0) - 2, positionPoint.y + 5);
textLayer.fontSize = _indexFont;
textLayer.bounds = CGRectMake(0, 0, rect.size.width, rect.size.height);
textLayer.alignmentMode = kCAAlignmentCenter;
textLayer.contentsScale = [[UIScreen mainScreen] scale];
return textLayer;
}
// 创建折线标记值
- (CATextLayer *)createValueLineTextLayer:(CGPoint)positionPoint text:(NSString *)text adjust:(BOOL)adjust{
CATextLayer *textLayer = [CATextLayer layer];
CGRect rect = [self ly_rectWithSize:CGSizeMake(100, 100) attributes:@{NSFontAttributeName:[UIFont systemFontOfSize:_indexFont]} forStr:text];
textLayer.string = text;
textLayer.foregroundColor = [UIColor blackColor].CGColor;
if (adjust) {
textLayer.position = CGPointMake(positionPoint.x, positionPoint.y + (rect.size.height));
}else {
textLayer.position = CGPointMake(positionPoint.x + (rect.size.width / 4.5), positionPoint.y - (rect.size.height));
}
textLayer.fontSize = _indexFont;
textLayer.bounds = CGRectMake(0, 0, rect.size.width, rect.size.height);
textLayer.alignmentMode = kCAAlignmentCenter;
textLayer.contentsScale = [[UIScreen mainScreen] scale];
return textLayer;
}
// 绘制柱状图标记值
- (CATextLayer *)createValueHistogramLayer:(CGPoint)positionPoint text:(NSString *)text{
CATextLayer *textLayer = [CATextLayer layer];
CGRect rect = [self ly_rectWithSize:CGSizeMake(100, 100) attributes:@{NSFontAttributeName:[UIFont systemFontOfSize:_indexFont]} forStr:text];
textLayer.string = text;
textLayer.foregroundColor = [UIColor blackColor].CGColor;
textLayer.position = CGPointMake(positionPoint.x, positionPoint.y - (rect.size.height));
textLayer.fontSize = _indexFont;
textLayer.bounds = CGRectMake(0, 0, rect.size.width, rect.size.height);
textLayer.alignmentMode = kCAAlignmentCenter;
textLayer.contentsScale = [[UIScreen mainScreen] scale];
return textLayer;
}
// 创建单位
- (CATextLayer *)createTextUNITLayer:(CGPoint)leftBottomPoint text:(NSString *)text{
CATextLayer *textLayer = [CATextLayer layer];
CGRect rect = [self ly_rectWithSize:CGSizeMake(100, 100) attributes:@{NSFontAttributeName:[UIFont systemFontOfSize:_indexFont]} forStr:text];
textLayer.string = text;
textLayer.foregroundColor = [UIColor blackColor].CGColor;
textLayer.position = CGPointMake(leftBottomPoint.x, leftBottomPoint.y - (rect.size.height / 2.0));
textLayer.fontSize = _indexFont;
textLayer.bounds = CGRectMake(0, 0, rect.size.width, rect.size.height);
textLayer.alignmentMode = kCAAlignmentCenter;
textLayer.contentsScale = [[UIScreen mainScreen] scale];
return textLayer;
}
// 创建标题
- (CATextLayer *)createTitleLayer:(CGPoint)positionPoint text:(NSString *)text{
CATextLayer *textLayer = [CATextLayer layer];
CGRect rect = [self ly_rectWithSize:CGSizeMake(100, 100) attributes:@{NSFontAttributeName:[UIFont systemFontOfSize:_titleFont]} forStr:text];
textLayer.string = text;
textLayer.foregroundColor = [UIColor blackColor].CGColor;
if (_alignment == NSTextAlignmentCenter) {
textLayer.position = CGPointMake(positionPoint.x, positionPoint.y + rect.size.height / 2.0);
}
if (_alignment == NSTextAlignmentLeft) {
textLayer.position = CGPointMake(positionPoint.x + rect.size.width / 2.0, positionPoint.y + rect.size.height / 2.0);
}
if (_alignment == NSTextAlignmentRight) {
textLayer.position = CGPointMake(positionPoint.x - rect.size.width / 2.0, positionPoint.y + rect.size.height / 2.0);
}
textLayer.fontSize = _titleFont;
textLayer.bounds = CGRectMake(0, 0, rect.size.width, rect.size.height);
textLayer.alignmentMode = kCAAlignmentCenter;
textLayer.contentsScale = [[UIScreen mainScreen] scale];
return textLayer;
}
- (void)histogramSelectAction:(void(^)(NSInteger index))action{
if (action) {
_distogramSelectAction = action;
}
}
#pragma mark - 处理柱状图点击事件 -
- (void)touchesBegan:(NSSet<UITouch *> *)touches withEvent:(UIEvent *)event{
UITouch *touch = [touches anyObject];
if (_type == LYChartViewTypeHistogram) {
CGPoint point = [touch preciseLocationInView:self];
if ((point.x >= _zeroPoint.x) && (point.x <= (_zeroPoint.x + _width))) {
if ((point.y <= _zeroPoint.y) && (point.y >= _edgeInsets.top)) {
NSInteger index = (point.x - _zeroPoint.x) / _columnSpace;
if (index < [_valueDataAry count]) {
if (_distogramSelectAction) {
_distogramSelectAction(index);
}
}
}
}
}
}
@end
