taler-ios

WalletColors.swift (4828B)

---

 /*
  * This file is part of GNU Taler, ©2022-25 Taler Systems S.A.
  * See LICENSE.md
  */
 /**
  * @author Marc Stibane
  */
 import SwiftUI
 
 fileprivate let grouped = true
 
 struct FullBackground: View {
     @AppStorage("preferredColorScheme") var preferredColorScheme: Int = 0
 
     @available(iOS 17.0, *)
     @MainActor
     var liquidView : some View {
         // Ensure we always start with a different view
         let startDate = Date() - Double.random(in: 1...999)
         let size = UIScreen.screenSize
         let view = TimelineView(.animation) { timeline in
             let elapsed = timeline.date.timeIntervalSince(startDate)
             Rectangle()
                 .colorEffect(
                     ShaderLibrary.liquidBack(
                         .float2(size.width, size.height),
                         .float(Float(elapsed))
                     )
                 )
         }
         return view.ignoresSafeArea()
     }
 
     var backgroundView: some View {
         WalletColors().backgroundColor.ignoresSafeArea()
     }
 
     var body: some View {
         if preferredColorScheme == 3, #available(iOS 17.0, *) {
             liquidView
         } else {
             backgroundView
         }
     }
 }
 public struct WalletColors {
     @AppStorage("minimalistic") private var minimalistic: Bool = false
 
 //    let tint = Color(.tintColor)
     let gray1 = Color(.systemGray)          // uncompleted
     let gray2 = Color(.systemGray2)         // disabled Fore
     let gray3 = Color(.systemGray3)
     let gray4 = Color(.systemGray4)
     let gray5 = Color(.systemGray5)
     let gray6 = Color(.systemGray6)
     let gray7 = grouped ? Color(.tertiarySystemGroupedBackground)
                         : Color(.tertiarySystemBackground)        // enabled Back
     let gray8 = grouped ? Color(.secondarySystemGroupedBackground)
                         : Color(.secondarySystemBackground)       // disabled Back
 
     let attention = Color.red       // TODO: WalletColors().errorColor
     let confirm = Color.yellow      // TODO: WalletColors().warningColor
 
     // TODO: In Japan, negative is blue, and positive is red
     let positive = Color.green
     let negative = Color.red
 
     func buttonForeColor(pressed: Bool,
                         disabled: Bool,
                           scheme: ColorScheme,
                         contrast: ColorSchemeContrast,
                        prominent: Bool = false) -> Color {
             disabled ? gray2
         : !prominent ? primaryAccent
         : scheme == .dark ? primary(contrast)
            : pressed ? gray6 : Color.white
     }
 
     func buttonBackColor(pressed: Bool,
                         disabled: Bool,
                        prominent: Bool = false) -> Color {
             disabled ? gray7
          : prominent ? primaryAccent
            : pressed ? gray4 : gray5
     }
 
     func primary(_ contrast: ColorSchemeContrast = .standard) -> Color {
         return contrast == .increased ? .primary
                                       : Color("Primary")
     }
 
     func secondary(_ scheme: ColorScheme, _ contrast: ColorSchemeContrast = .standard) -> Color {
         return contrast == .increased ? .primary            // WCAG AAA for any scheme
                        : minimalistic ? .secondary          // not enough contrast
                     : scheme == .dark ? .secondary          // WCAG AA for dark scheme
                                       : Color(.darkGray)    // WCAG AA for light scheme
     }
 
     var labelColor: Color {
         Color(UIColor.label)
     }
 
     var backgroundColor: Color {
         grouped ? Color(.systemGroupedBackground)
                 : Color(.systemBackground)
     }
 
     var secondaryBackground: Color {
         Color(.secondarySystemGroupedBackground)
     }
 
     var sideBackgroundColor: Color {
         gray6
     }
 
     func pickerSelected(_ scheme: ColorScheme, _ contrast: ColorSchemeContrast) -> Color {
         return contrast == .increased ? (scheme == .dark ? gray3 : gray4)
                                       : (scheme == .dark ? gray4 : gray5)
     }
 
     var pickerBackground: Color {
         gray7
     }
 
     var fieldForeground: Color {              // text color
         Color.primary
     }
 
     var fieldBackground: Color {
         gray8
     }
 
     var uncompletedColor: Color {
         // used in TransactionRowView
         gray1
     }
 
     var errorColor: Color {
         Color("Error")
     }
 
     var primaryAccent: Color {
         Color("Taler")
     }
 
     func pendingColor(_ incoming: Bool) -> Color {
         incoming ? primaryAccent    // Color("PendingIncoming")
                  : primary()        // Color("PendingOutgoing")
     }
 
     func transactionColor(_ incoming: Bool) -> Color {
         incoming ? primaryAccent    // Color("Incoming")
                  : primary()        // Color("Outgoing")
     }
 }