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 let image: CGImage
  11   private var patternSize: CGFloat {
  12     pixelSize * 8.0;
  13   }
  14
  15   public init(design: Binding<TileDesign>, pixelSize: CGFloat = 2.0, foregroundColor: Color = .black, backgroundColor: Color = .white) {
  16     self._design = design
  17     self.pixelSize = pixelSize
  18     self.foregroundColor = foregroundColor
  19     self.backgroundColor = backgroundColor
  20
  21     #if os(iOS) || os(watchOS) || os(tvOS)
  22       let foregroundCGColor = UIColor(foregroundColor).cgColor
  23       let backgroundCGColor = UIColor(backgroundColor).cgColor
  24     #else
  25       let foregroundCGColor = NSColor(foregroundColor).cgColor
  26     let backgroundCGColor = NSColor(backgroundColor).cgColor
  27     #endif
  28
  29     self.image = TileImage.image(design.wrappedValue, pixelSize: pixelSize, foregroundColor: foregroundCGColor, backgroundColor: backgroundCGColor)
  30   }
  31
  32   public var body: some View {
  33     GeometryReader { gr in
  34       Image(image, scale: 1, label: Text("Test")).resizable(resizingMode: .tile)
  35     }.drawingGroup()
  36   }
  37 }
  38
  39 struct Pattern_Previews: PreviewProvider {
  40     static var previews: some View {
  41       VStack {
  42         Text("Default")
  43         PatternView(design: .constant(TileDesign.grid))
  44         Text("Color override")
  45         PatternView(design: .constant(TileDesign.balls), foregroundColor: .pink, backgroundColor: .cyan)
  46         Text("Pixel size override")
  47         PatternView(design: .constant(TileDesign.shingles), pixelSize: 8.0)
  48       }
  49     }
  50 }