124 lines
2.9 KiB
Swift
124 lines
2.9 KiB
Swift
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//
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// CLImageViews.swift
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// Crush
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//
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// Created by Leon on 2025/7/20.
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//
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import UIKit
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import SnapKit
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class CLAnimatedImage: UIImageView {
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override init(frame: CGRect) {
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super.init(frame: frame)
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setupViews()
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}
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override init(image: UIImage?) {
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super.init(image: image)
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setupViews()
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}
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required init?(coder: NSCoder) {
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super.init(coder: coder)
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setupViews()
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}
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private func setupViews() {
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contentMode = .scaleAspectFill
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}
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override func layoutSubviews() {
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super.layoutSubviews()
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layer.cornerRadius = bounds.size.height * 0.5
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layer.masksToBounds = true
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}
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}
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class CLImageView: UIImageView {
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convenience init(){
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self.init(frame: .zero)
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}
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override init(frame: CGRect) {
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super.init(frame: frame)
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setupViews()
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}
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override init(image: UIImage?) {
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super.init(image: image)
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setupViews()
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}
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required init?(coder: NSCoder) {
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super.init(coder: coder)
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setupViews()
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}
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private func setupViews() {
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contentMode = .scaleAspectFill
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}
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}
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/// 约束时,请不要给定底部的约束
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class AutoRatioImageView: CLImageView {
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// 用来保存宽高比约束
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private var aspectRatioConstraint: Constraint?
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convenience init() {
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self.init(frame: .zero)
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}
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override init(frame: CGRect) {
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super.init(frame: frame)
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setupView()
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}
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required init?(coder: NSCoder) {
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super.init(coder: coder)
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setupView()
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}
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private func setupView() {
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contentMode = .scaleAspectFill
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clipsToBounds = true // 裁剪多余部分
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self.snp.makeConstraints { make in
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make.height.equalTo(self.snp.width).priority(.low)
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}
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}
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/// 设置本地图片
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func setImage(_ image: UIImage?) {
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self.image = image
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updateAspectRatio(for: image?.size)
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}
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/// 设置网络图片
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func setImage(with url: URL?, placeholder: UIImage? = nil) {
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self.kf.setImage(with: url, placeholder: placeholder, completionHandler: { [weak self] result in
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switch result {
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case .success(let value):
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self?.updateAspectRatio(for: value.image.size)
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case .failure:
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self?.updateAspectRatio(for: placeholder?.size)
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}
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})
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}
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/// 更新宽高比约束
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private func updateAspectRatio(for size: CGSize?) {
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guard let size = size, size.width > 0 else { return }
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let ratio = size.height / size.width
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// 先移除旧的约束
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aspectRatioConstraint?.deactivate()
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// 高度 = 宽度 * 比例
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self.snp.makeConstraints { make in
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aspectRatioConstraint = make.height.equalTo(self.snp.width).multipliedBy(ratio).constraint
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}
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}
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}
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