From 7b3ecfffc59d2d980d9f7628365b64c20fe015be Mon Sep 17 00:00:00 2001
From: Runt <qingingrunt2010@qq.com>
Date: Sun, 27 Jul 2025 09:42:03 +0000
Subject: [PATCH] 多个小窗缩放问题修复
---
LiveProject/views/FlowLayout.swift | 119 +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
1 files changed, 119 insertions(+), 0 deletions(-)
diff --git a/LiveProject/views/FlowLayout.swift b/LiveProject/views/FlowLayout.swift
index f3ee86a..038d158 100644
--- a/LiveProject/views/FlowLayout.swift
+++ b/LiveProject/views/FlowLayout.swift
@@ -4,4 +4,123 @@
//
// Created by 倪路朋 on 6/26/25.
//
+import SwiftUI
+struct FlowLayout: Layout {
+ var spacing: CGFloat = 8
+ var lineSpacing: CGFloat = 8
+
+ func sizeThatFits(proposal: ProposedViewSize, subviews: Subviews, cache: inout ()) -> CGSize {
+ var width: CGFloat = 0
+ var height: CGFloat = 0
+ var currentLineWidth: CGFloat = 0
+ var currentLineHeight: CGFloat = 0
+ let maxWidth = proposal.width ?? .infinity
+
+ for view in subviews {
+ let size = view.sizeThatFits(.unspecified)
+ if currentLineWidth + size.width > maxWidth {
+ width = max(width, currentLineWidth)
+ height += currentLineHeight + lineSpacing
+ currentLineWidth = size.width
+ currentLineHeight = size.height
+ } else {
+ currentLineWidth += size.width + spacing
+ currentLineHeight = max(currentLineHeight, size.height)
+ }
+ }
+
+ width = max(width, currentLineWidth)
+ height += currentLineHeight
+
+ return CGSize(width: width, height: height)
+ }
+
+ func placeSubviews(in bounds: CGRect, proposal: ProposedViewSize, subviews: Subviews, cache: inout ()) {
+ var x: CGFloat = 0
+ var y: CGFloat = 0
+ var lineHeight: CGFloat = 0
+
+ for view in subviews {
+ let size = view.sizeThatFits(.unspecified)
+
+ if x + size.width > bounds.width {
+ x = 0
+ y += lineHeight + lineSpacing
+ lineHeight = 0
+ }
+
+ view.place(
+ at: CGPoint(x: bounds.minX + x, y: bounds.minY + y),
+ proposal: ProposedViewSize(width: size.width, height: size.height)
+ )
+
+ x += size.width + spacing
+ lineHeight = max(lineHeight, size.height)
+ }
+ }
+}
+// MARK: - 使用示例
+
+struct FlowLayoutExample: View {
+ let tags = [
+ "Swift"
+ ]
+
+ @State private var newTag = ""
+ @State private var customTags = ["自定义标签1", "自定义标签2"]
+
+ var body: some View {
+ VStack{
+ VStack(spacing: 20) {
+ FlowLayout(){
+
+ ForEach(tags, id: \.self) { item in
+ Text(item)
+ .padding(.horizontal, 12)
+ .padding(.vertical, 6)
+ .background(Color.blue.opacity(0.2))
+ .cornerRadius(8)
+ }
+ }.frame(alignment:.leading)
+ .background(Color.red)
+ }
+ .frame(maxWidth: .infinity,alignment:.leading)
+ }
+ .background(Color.black)
+ }
+
+ private func addTag() {
+ withAnimation {
+ customTags.append(newTag)
+ newTag = ""
+ }
+ }
+}
+
+/// 标签视图
+struct TagView: View {
+ let text: String
+
+ var body: some View {
+ Text(text)
+ .padding(.horizontal, 12)
+ .padding(.vertical, 8)
+ .background(Color.blue.opacity(0.2))
+ .foregroundColor(.blue)
+ .cornerRadius(10)
+ .overlay(
+ RoundedRectangle(cornerRadius: 10)
+ .stroke(Color.blue, lineWidth: 1)
+ )
+ .fixedSize(horizontal: true, vertical: false) // 确保文本不被截断
+ }
+}
+
+// MARK: - 预览
+
+struct FlowLayout_Previews: PreviewProvider {
+ static var previews: some View {
+ FlowLayoutExample()
+ }
+}
--
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