SwiftUI

ui.SwiftUI embeds real macOS controls in a Go application. Ordinary QuickGUI components work without it.

#Host

Create controls inside ui.SwiftUI.Host. The host is the native view boundary and can size itself from its content.

func SwiftUiHostExample() *ui.Element {
	return ui.SwiftUI.Host(
		ui.SwiftUIHostProps{MatchContents: true},
		func() *ui.Element {
			return ui.SwiftUI.Button(ui.SwiftUIButtonProps{Label: "Continue"})
		},
	)
}

#Native controls

Button, Slider, Toggle, ProgressView, Stepper, TextField, SecureField, Picker, SegmentedControl, DatePicker, ColorPicker, and Gauge. They look and behave like the system controls.

#Controlled values

Bind a signal and store the value from the native callback. A SwiftUI control and a QuickGUI view can share the same signal. DatePicker uses Unix timestamps in milliseconds.

func SwiftUiToggleExample() *ui.Element {
	on, setOn := ui.CreateSignal(true)
	return ui.SwiftUI.Host(
		ui.SwiftUIHostProps{MatchContents: true},
		func() *ui.Element {
			return ui.SwiftUI.Toggle(ui.SwiftUIToggleProps{
				IsOn:         on,
				Label:        "Notifications",
				OnIsOnChange: func(next bool, _ *native.Event) { setOn(next) },
			})
		},
	)
}

#Sizing

MatchContents: true sizes both axes from the control. Use ui.SwiftUIMatchContents{Vertical: true} for an intrinsic height and set the width yourself.

ui.SwiftUIHostProps{
	MatchContents: ui.SwiftUIMatchContents{Vertical: true},
	PartProps:     ui.PartProps{Style: ui.Style().Width(320)},
}

#Platform support

SwiftUI hosting requires macOS. Appearance can vary with the operating-system version.