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@brunow
Created April 14, 2021 05:41
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SwiftUI os specific modifier
/// After reading an article from Antoine v.d. SwiftLee  @twannl about conditional view modifier, I had an idea to improve my code I write for specific OS.
/// https://www.avanderlee.com/swiftui/conditional-view-modifier
extension Bool {
static var iOS: Bool {
#if os(iOS)
return true
#else
return false
#endif
}
static var macOS: Bool {
#if os(macOS)
return true
#else
return false
#endif
}
static var watchOS: Bool {
#if os(watchOS)
return true
#else
return false
#endif
}
static var tvOS: Bool {
#if os(tvOS)
return true
#else
return false
#endif
}
}
struct ViewPlatformOptions: OptionSet {
static let iOS = ViewPlatformOptions(rawValue: 1)
static let macOS = ViewPlatformOptions(rawValue: 1 << 1)
static let watchOS = ViewPlatformOptions(rawValue: 1 << 2)
static let tvOS = ViewPlatformOptions(rawValue: 1 << 2)
let rawValue: Int8
init(rawValue: Int8) {
self.rawValue = rawValue
}
}
@ViewBuilder
func `if`<Content: View>(_ platforms: ViewPlatformOptions, content: (Self) -> Content) -> some View {
if platforms.contains(.iOS) && Bool.iOS ||
platforms.contains(.macOS) && Bool.macOS ||
platforms.contains(.watchOS) && Bool.watchOS ||
platforms.contains(.tvOS) && Bool.tvOS {
content(self)
} else {
self
}
}
Text("If")
.if([.iOS, .macOS]) {
$0.font(Font.title.weight(.bold))
}
Text("If")
.if(.iOS) {
$0.font(Font.title.weight(.bold))
}
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