damus

nostr ios client
git clone git://jb55.com/damus
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CustomPicker.swift (2166B)

      1 //
      2 //  CustomPicker.swift
      3 //  damus
      4 //
      5 //  Created by Eric Holguin on 1/22/23.
      6 //
      7 
      8 import SwiftUI
      9 
     10 let RECTANGLE_GRADIENT = LinearGradient(gradient: Gradient(colors: [
     11     DamusColors.purple,
     12     DamusColors.blue
     13 ]), startPoint: .leading, endPoint: .trailing)
     14 
     15 struct CustomPicker<SelectionValue: Hashable, Content: View>: View {
     16     
     17     @Environment(\.colorScheme) var colorScheme
     18     
     19     @Namespace var picker
     20     @Binding var selection: SelectionValue
     21     @ViewBuilder let content: Content
     22     
     23     public var body: some View {
     24         let contentMirror = Mirror(reflecting: content)
     25         let blocksCount = Mirror(reflecting: contentMirror.descendant("value")!).children.count
     26         HStack {
     27             ForEach(0..<blocksCount, id: \.self) { index in
     28                 let tupleBlock = contentMirror.descendant("value", ".\(index)")
     29                 let text = Mirror(reflecting: tupleBlock!).descendant("content") as! Text
     30                 let tag = Mirror(reflecting: tupleBlock!).descendant("modifier", "value", "tagged") as! SelectionValue
     31                 
     32                 Button {
     33                     withAnimation(.spring()) {
     34                         selection = tag
     35                     }
     36                 } label: {
     37                     text
     38                         .padding(EdgeInsets(top: 15, leading: 0, bottom: 10, trailing: 0))
     39                         .font(.system(size: 14, weight: .heavy))
     40                 }
     41                 .background(
     42                     Group {
     43                         if tag == selection {
     44                             Rectangle().fill(RECTANGLE_GRADIENT).frame(height: 2.5)
     45                                 .matchedGeometryEffect(id: "selector", in: picker)
     46                                 .cornerRadius(2.5)
     47                         }
     48                     },
     49                     alignment: .bottom
     50                 )
     51                 .frame(maxWidth: .infinity)
     52                 .accentColor(tag == selection ? textColor() : .gray)
     53             }
     54         }
     55         .background(Color(UIColor.systemBackground))
     56     }
     57     
     58     func textColor() -> Color {
     59         colorScheme == .light ? DamusColors.black : DamusColors.white
     60     }
     61 }