180 lines
7.0 KiB
Swift
180 lines
7.0 KiB
Swift
//
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// UIImage+.swift
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// yinmeng-ios
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//
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// Created by yinmeng on 2024/2/21.
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//
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import Foundation
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// MARK:- 二、UIColor 生成的图片 和 生成渐变色图片
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extension UIImage{
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// MARK: 2.1、生成指定尺寸的纯色图像
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/// 生成指定尺寸的纯色图像
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/// - Parameters:
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/// - color: 图片颜色
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/// - size: 图片尺寸
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/// - Returns: 返回对应的图片
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static func image(color: UIColor, size: CGSize = CGSize(width: 1.0, height: 1.0)) -> UIImage? {
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return image(color: color, size: size, corners: .allCorners, radius: 0)
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}
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// MARK: 2.2、生成指定尺寸和圆角的纯色图像
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/// 生成指定尺寸和圆角的纯色图像
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/// - Parameters:
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/// - color: 图片颜色
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/// - size: 图片尺寸
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/// - corners: 剪切的方式
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/// - round: 圆角大小
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/// - Returns: 返回对应的图片
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static func image(color: UIColor, size: CGSize, corners: UIRectCorner, radius: CGFloat) -> UIImage? {
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let rect = CGRect(x: 0, y: 0, width: size.width, height: size.height)
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UIGraphicsBeginImageContextWithOptions(size, false, UIScreen.main.scale)
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let context = UIGraphicsGetCurrentContext()
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if radius > 0 {
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let path = UIBezierPath(roundedRect: rect, byRoundingCorners: corners, cornerRadii: CGSize(width: radius, height: radius))
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color.setFill()
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path.fill()
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} else {
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context?.setFillColor(color.cgColor)
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context?.fill(rect)
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}
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let img = UIGraphicsGetImageFromCurrentImageContext()
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UIGraphicsEndImageContext()
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return img
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}
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enum GradientDirection {
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case horizontal // 水平从左到右
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case vertical // 垂直从上到下
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case leftOblique // 左上到右下
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case rightOblique // 右上到左下
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case other(CGPoint, CGPoint)
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public func point(size: CGSize) -> (CGPoint, CGPoint) {
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switch self {
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case .horizontal:
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return (CGPoint.init(x: 0, y: 0), CGPoint.init(x: size.width, y: 0))
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case .vertical:
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return (CGPoint.init(x: 0, y: 0), CGPoint.init(x: 0, y: size.height))
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case .leftOblique:
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return (CGPoint.init(x: 0, y: 0), CGPoint.init(x: size.width, y: size.height))
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case .rightOblique:
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return (CGPoint.init(x: size.width, y: 0), CGPoint.init(x: 0, y: size.height))
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case .other(let stat, let end):
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return (stat, end)
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}
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}
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}
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// MARK: 2.3、生成渐变色的图片 ["#B0E0E6", "#00CED1", "#2E8B57"]
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/// 生成渐变色的图片 ["#B0E0E6", "#00CED1", "#2E8B57"]
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/// - Parameters:
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/// - hexsString: 十六进制字符数组
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/// - size: 图片大小
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/// - locations: locations 数组
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/// - direction: 渐变的方向
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/// - Returns: 渐变的图片
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static func gradient(hexsString: [String], size: CGSize = CGSize(width: 10, height: 10), locations:[CGFloat]? = nil, direction: GradientDirection = .horizontal) -> UIImage? {
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return gradient(hexsString.map{ ThemeColor(hexStr: $0) }, size: size, locations: locations, direction: direction)
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}
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// MARK: 2.4、生成渐变色的图片 [UIColor, UIColor, UIColor]
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/// 生成渐变色的图片 [UIColor, UIColor, UIColor]
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/// - Parameters:
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/// - colors: UIColor 数组
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/// - size: 图片大小
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/// - locations: locations 数组
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/// - direction: 渐变的方向
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/// - Returns: 渐变的图片
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static func gradient(_ colors: [UIColor], size: CGSize = CGSize(width: 10, height: 10), locations:[CGFloat]? = nil, direction: GradientDirection = .horizontal) -> UIImage? {
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return gradient(colors, size: size, radius: 0, locations: locations, direction: direction)
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}
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// MARK: 2.5、生成带圆角渐变色的图片 [UIColor, UIColor, UIColor]
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/// 生成带圆角渐变色的图片 [UIColor, UIColor, UIColor]
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/// - Parameters:
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/// - colors: UIColor 数组
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/// - size: 图片大小
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/// - radius: 圆角
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/// - locations: locations 数组
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/// - direction: 渐变的方向
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/// - Returns: 带圆角的渐变的图片
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static func gradient(_ colors: [UIColor],
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size: CGSize = CGSize(width: 10, height: 10),
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radius: CGFloat,
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locations:[CGFloat]? = nil,
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direction: GradientDirection = .horizontal) -> UIImage? {
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if colors.count == 0 { return nil }
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if colors.count == 1 {
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return UIImage.image(color: colors[0])
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}
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UIGraphicsBeginImageContext(size)
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let context = UIGraphicsGetCurrentContext()
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let path = UIBezierPath(roundedRect: CGRect(x: 0, y: 0, width: size.width, height: size.height), cornerRadius: radius)
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path.addClip()
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context?.addPath(path.cgPath)
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guard let gradient = CGGradient(colorsSpace: CGColorSpaceCreateDeviceRGB(), colors: colors.map{$0.cgColor} as CFArray, locations: locations?.map { CGFloat($0) }) else { return nil
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}
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let directionPoint = direction.point(size: size)
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context?.drawLinearGradient(gradient, start: directionPoint.0, end: directionPoint.1, options: .drawsBeforeStartLocation)
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let image = UIGraphicsGetImageFromCurrentImageContext()
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UIGraphicsEndImageContext()
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return image
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}
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static func createImageWithCorners(color:UIColor, size: CGSize, topLeft: CGFloat, topRight: CGFloat, bottomLeft: CGFloat, bottomRight: CGFloat) -> UIImage? {
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UIGraphicsBeginImageContextWithOptions(size, false, 0)
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guard let context = UIGraphicsGetCurrentContext() else { return nil }
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let path = UIBezierPath(rect: CGRect(origin: .zero, size: size))
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context.addPath(path.cgPath)
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// 设置左上角的圆角
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path.move(to: CGPoint(x: topLeft, y: 0))
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path.addLine(to: CGPoint(x: 0, y: topLeft))
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if topLeft > 0 {
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path.addArc(withCenter: CGPoint(x: topLeft, y: topLeft), radius: topLeft, startAngle: CGFloat.pi, endAngle: CGFloat.pi * 3 / 2, clockwise: true)
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}
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// 设置右上角的圆角
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let topRightFrom = CGPoint(x: size.width - topRight, y: 0)
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path.addLine(to: topRightFrom)
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if topRight > 0 {
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path.addArc(withCenter: CGPoint(x: size.width - topRight, y: topRight), radius: topRight, startAngle: CGFloat.pi * 3 / 2, endAngle: CGFloat.pi, clockwise: true)
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}
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// 设置左下角的圆角
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let bottomLeftFrom = CGPoint(x: 0, y: size.height - bottomLeft)
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path.addLine(to: bottomLeftFrom)
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if bottomLeft > 0 {
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path.addArc(withCenter: CGPoint(x: bottomLeft, y: size.height - bottomLeft), radius: bottomLeft, startAngle: 0, endAngle: CGFloat.pi / 2, clockwise: false)
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}
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// 设置右下角的圆角
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path.addLine(to: CGPoint(x: size.width, y: size.height - bottomRight))
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if bottomRight > 0 {
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path.addArc(withCenter: CGPoint(x: size.width - bottomRight, y: size.height - bottomRight), radius: bottomRight, startAngle: CGFloat.pi / 2, endAngle: 0, clockwise: false)
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}
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path.close()
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context.clip()
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// 填充颜色，或者可以在这里添加自定义的图片
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context.setFillColor(color.cgColor)
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context.fillPath()
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let image = UIGraphicsGetImageFromCurrentImageContext()
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UIGraphicsEndImageContext()
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return image
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}
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}
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extension UIImage{
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static func getDefaultAvatar() -> UIImage?{
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return UIImage(named: "yin_default_avatar") ?? nil
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}
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}
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