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

   1 import SwiftUI
   2
   3 public struct PatternView: View {
   4
   5   @Binding public var design: TileDesign
   6   public var pixelSize: CGFloat
   7   public var foregroundColor: Color
   8   public var backgroundColor: Color
   9
  10   private var patternSize: CGFloat {
  11     pixelSize * 8.0;
  12   }
  13
  14   public init(design: Binding<TileDesign>, pixelSize: CGFloat = 2.0, foregroundColor: Color = .black, backgroundColor: Color = .white) {
  15     self._design = design
  16     self.pixelSize = pixelSize
  17     self.foregroundColor = foregroundColor
  18     self.backgroundColor = backgroundColor
  19   }
  20
  21   public var body: some View {
  22     GeometryReader { gr in
  23       VStack(spacing: 0) {
  24         ForEach(0 ..< 1 + Int(ceil(gr.size.height / patternSize)), id: \.self) { i in
  25           HStack(spacing: 0) {
  26             ForEach(0 ..< Int(ceil(gr.size.width / patternSize)), id: \.self) { j in
  27               Tile(design: design, pixelSize: pixelSize, foregroundColor: foregroundColor, backgroundColor: backgroundColor)
  28             }
  29           }
  30         }
  31       }
  32     }.drawingGroup()
  33   }
  34 }
  35
  36 struct Pattern_Previews: PreviewProvider {
  37     static var previews: some View {
  38       VStack {
  39         Text("Default")
  40         PatternView(design: .constant(TileDesign.grid))
  41         Text("Color override")
  42         PatternView(design: .constant(TileDesign.balls), foregroundColor: .pink, backgroundColor: .cyan)
  43         Text("Pixel size override")
  44         PatternView(design: .constant(TileDesign.shingles), pixelSize: 8.0)
  45       }
  46     }
  47 }