I'm interested in 2-finger swipe ( scroll ) gesture.
Not two-finger drag, but 2-finger swipe (without press). Like used in Safari to scroll up and down.
As I see noone of basic gestures will work for this: TapGesture - is not; LongPressGesture - not; DragGesture - not; MagnificationGesture - not; RotationGesture - not;
Have anyone some ideas how to do this?
I need at least direction to look at.
import Combine
@main
struct MyApp: App {
@State var subs = Set<AnyCancellable>() // Cancel onDisappear
@SceneBuilder
var body: some Scene {
WindowGroup {
SomeWindowView()
/////////////
// HERE!!!!!
/////////////
.onAppear { trackScrollWheel() }
}
}
}
/////////////
// HERE!!!!!
/////////////
extension MyApp {
func trackScrollWheel() {
NSApp.publisher(for: \.currentEvent)
.filter { event in event?.type == .scrollWheel }
.throttle(for: .milliseconds(200),
scheduler: DispatchQueue.main,
latest: true)
.sink {
if let event = $0 {
if event.deltaX > 0 { print("right") }
if event.deltaX < 0 { print("left") }
if event.deltaY > 0 { print("down") }
if event.deltaY < 0 { print("up") }
}
}
.store(in: &subs)
}
}