git.r.bdr.sh - rbdr/patterns/blob - Sources/Patterns/Pattern.swift

   1 import SwiftUI
   2
   3 public struct Pattern: View {
   4
   5   @Binding public var design: TileDesign;
   6   public var pixelSize: CGFloat = 2.0;
   7   public var foregroundColor: Color = .black
   8   public var backgroundColor: Color = .white
   9
  10   private var patternSize: CGFloat {
  11     pixelSize * 8.0;
  12   }
  13
  14   public var body: some View {
  15     GeometryReader { gr in
  16       VStack(spacing: 0) {
  17         ForEach(0 ..< 1 + Int(ceil(gr.size.height / patternSize)), id: \.self) { i in
  18           HStack(spacing: 0) {
  19             ForEach(0 ..< Int(ceil(gr.size.width / patternSize)), id: \.self) { j in
  20               Tile(design: design, pixelSize: pixelSize, foregroundColor: foregroundColor, backgroundColor: backgroundColor)
  21             }
  22           }
  23         }
  24       }
  25     }.drawingGroup()
  26   }
  27 }
  28
  29 struct Pattern_Previews: PreviewProvider {
  30     static var previews: some View {
  31       VStack {
  32         Text("Default")
  33         Pattern(design: .constant(TileDesign.grid))
  34         Text("Color override")
  35         Pattern(design: .constant(TileDesign.balls), foregroundColor: .pink, backgroundColor: .cyan)
  36         Text("Pixel size override")
  37         Pattern(design: .constant(TileDesign.shingles), pixelSize: 8.0)
  38       }
  39     }
  40 }