//
|
// CYAnyCornerRadiusUtil.m
|
// ProjectComponentDemo
|
//
|
// Created by Mr.GCY on 2018/4/23.
|
// Copyright © 2018年 Mr.GCY. All rights reserved.
|
//
|
|
#import "CYAnyCornerRadiusUtil.h"
|
|
@implementation CYAnyCornerRadiusUtil
|
CornerRadii CornerRadiiMake(CGFloat topLeft,CGFloat topRight,CGFloat bottomLeft,CGFloat bottomRight){
|
return (CornerRadii){
|
topLeft,
|
topRight,
|
bottomLeft,
|
bottomRight,
|
};
|
}
|
//切圆角函数
|
CGPathRef CYPathCreateWithRoundedRect(CGRect bounds,
|
CornerRadii cornerRadii)
|
{
|
const CGFloat minX = CGRectGetMinX(bounds);
|
const CGFloat minY = CGRectGetMinY(bounds);
|
const CGFloat maxX = CGRectGetMaxX(bounds);
|
const CGFloat maxY = CGRectGetMaxY(bounds);
|
|
const CGFloat topLeftCenterX = minX + cornerRadii.topLeft;
|
const CGFloat topLeftCenterY = minY + cornerRadii.topLeft;
|
|
const CGFloat topRightCenterX = maxX - cornerRadii.topRight;
|
const CGFloat topRightCenterY = minY + cornerRadii.topRight;
|
|
const CGFloat bottomLeftCenterX = minX + cornerRadii.bottomLeft;
|
const CGFloat bottomLeftCenterY = maxY - cornerRadii.bottomLeft;
|
|
const CGFloat bottomRightCenterX = maxX - cornerRadii.bottomRight;
|
const CGFloat bottomRightCenterY = maxY - cornerRadii.bottomRight;
|
/*
|
path : 路径
|
m : 变换
|
x y : 画圆的圆心点
|
radius : 圆的半径
|
startAngle : 起始角度
|
endAngle ： 结束角度
|
clockwise : 是否是顺时针
|
void CGPathAddArc(CGMutablePathRef cg_nullable path,
|
const CGAffineTransform * __nullable m,
|
CGFloat x, CGFloat y, CGFloat radius, CGFloat startAngle, CGFloat endAngle,
|
bool clockwise)
|
*/
|
//虽然顺时针参数是YES，在iOS中的UIView中，这里实际是逆时针
|
|
CGMutablePathRef path = CGPathCreateMutable();
|
//顶 左
|
CGPathAddArc(path, NULL, topLeftCenterX, topLeftCenterY,cornerRadii.topLeft, M_PI, 3 * M_PI_2, NO);
|
//顶 右
|
CGPathAddArc(path, NULL, topRightCenterX , topRightCenterY, cornerRadii.topRight, 3 * M_PI_2, 0, NO);
|
//底 右
|
CGPathAddArc(path, NULL, bottomRightCenterX, bottomRightCenterY, cornerRadii.bottomRight,0, M_PI_2, NO);
|
//底 左
|
CGPathAddArc(path, NULL, bottomLeftCenterX, bottomLeftCenterY, cornerRadii.bottomLeft, M_PI_2,M_PI, NO);
|
CGPathCloseSubpath(path);
|
return path;
|
}
|
//画渐变线
|
void drawLinearGradient(CGContextRef cg_nullable context,const CGFloat * cg_nullable components,int componentCount,CGFloat width,CGPoint startPoint,CGPoint endPoint,CGGradientDrawingOptions options){
|
CGColorSpaceRef rgb = CGColorSpaceCreateDeviceRGB();
|
CGFloat colors[componentCount];
|
for (int i = 0; i < componentCount; i++) {
|
colors[i] = components[i];
|
}
|
CGGradientRef gradient = CGGradientCreateWithColorComponents
|
(rgb, colors, NULL, sizeof(colors)/(sizeof(colors[0])*4));//形成梯形，渐变的效果
|
CGColorSpaceRelease(rgb);
|
CGContextSaveGState(context);
|
|
CGContextMoveToPoint(context, startPoint.x, startPoint.y);
|
CGContextAddLineToPoint(context, endPoint.x, endPoint.y);
|
CGContextSetLineWidth(context, width);
|
CGContextReplacePathWithStrokedPath(context);
|
CGContextClip(context);
|
|
//gradient渐变颜色,startPoint开始渐变的起始位置,endPoint结束坐标,options开始坐标之前or开始之后开始渐变
|
CGContextDrawLinearGradient(context, gradient,startPoint ,endPoint,options);
|
CGContextRestoreGState(context);// 恢复到之前的context
|
|
CGGradientRelease(gradient);
|
}
|
//画线
|
void drawLine(CGContextRef cg_nullable context,CGColorRef color,CGFloat width,CGPoint startPoint,CGPoint endPoint){
|
CGContextMoveToPoint(context, startPoint.x , startPoint.y);
|
CGContextAddLineToPoint(context, endPoint.x,endPoint.y);
|
CGContextSetLineWidth(context, width);
|
CGContextSetStrokeColorWithColor(context, color);
|
CGContextDrawPath(context, kCGPathStroke);
|
}
|
//画弧线
|
void drawLineArc(CGContextRef cg_nullable context,CGColorRef color,CGFloat width,CGPoint centerPoint,CGFloat radius, CGFloat startAngle, CGFloat endAngle, int clockwise){
|
CGContextAddArc(context, centerPoint.x, centerPoint.y, radius, startAngle, endAngle, clockwise);
|
//划线宽度
|
CGContextSetLineWidth(context, width);
|
//划线颜色
|
CGContextSetStrokeColorWithColor(context, color);
|
CGContextDrawPath(context, kCGPathStroke);
|
}
|
@end
|
