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SwiftUI View to UIImage
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import SwiftUI | |
struct TestPage: View { | |
@State private var rect: CGRect = .zero | |
@State var uiImage: UIImage? = nil | |
var body: some View { | |
VStack { | |
HStack { | |
Image(systemName: "sun.haze") | |
.font(.title) | |
.foregroundColor(.white) | |
Text("Hello, World!") | |
.font(.title) | |
.foregroundColor(.white) | |
} | |
.padding() | |
.background(Color.blue) | |
.cornerRadius(8) | |
.background(RectangleGetter(rect: $rect)) | |
.onAppear() { | |
} | |
Button(action: { | |
self.uiImage = UIApplication.shared.windows[0].rootViewController?.view!.getImage(rect: self.rect) | |
}) { | |
Text("Button") | |
.padding() | |
.foregroundColor(Color.white) | |
.background(Color.red) | |
.cornerRadius(8) | |
} | |
if uiImage != nil { | |
VStack { | |
Image(uiImage: self.uiImage!) | |
}.background(Color.green) | |
.frame(width: 500, height: 500) | |
} | |
} | |
} | |
} | |
struct RectangleGetter: View { | |
@Binding var rect: CGRect | |
var body: some View { | |
GeometryReader { geometry in | |
self.createView(proxy: geometry) | |
} | |
} | |
func createView(proxy: GeometryProxy) -> some View { | |
DispatchQueue.main.async { | |
self.rect = proxy.frame(in: .global) | |
} | |
return Rectangle().fill(Color.clear) | |
} | |
} | |
extension UIView { | |
func getImage(rect: CGRect) -> UIImage { | |
let renderer = UIGraphicsImageRenderer(bounds: rect) | |
return renderer.image { rendererContext in | |
layer.render(in: rendererContext.cgContext) | |
} | |
} | |
} | |
struct TestPage_Previews: PreviewProvider { | |
static var previews: some View { | |
TestPage() | |
} | |
} |
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