I can open a new window, but if I close it using the window's close button then my app crashes.
import SwiftUI
struct ContentView: View
{
var body: some View
{
Button(action: {openMyWindow()},
label: {Image(systemName: "paperplane")})
.padding()
}
}
func openMyWindow()
{
var windowRef:NSWindow
windowRef = NSWindow(
contentRect: NSRect(x: 100, y: 100, width: 100, height: 600),
styleMask: [.titled, .closable, .miniaturizable, .resizable, .fullSizeContentView],
backing: .buffered, defer: false)
windowRef.contentView = NSHostingView(rootView: WindowView())
windowRef.makeKeyAndOrderFront(nil)
}
struct WindowView: View
{
var body: some View
{
Text("Hello World")
.padding()
}
}
#main
struct Open_WindowApp: App
{
var body: some Scene
{
WindowGroup
{
ContentView()
}
}
}
I think I need to keep my windowRef active, but how do I do this?
declare windowRef outside the scope of openMyWindow()
if the window already exists, bring to front, don't make another.
keep the window from being dealloc'd on close, either
windowRef.isReleasedWhenClosed = false (shown below) (documentation), OR
someGlobalWindowController = NSWindowController(window: w)
var windowRef: NSWindow?
func openMyWindow()
{
if let curWindow = windowRef {
curWindow.makeKeyAndOrderFront(nil)
return
}
let w = NSWindow(
contentRect: NSRect(x: 100, y: 100, width: 100, height: 600),
styleMask: [.titled, .closable, .miniaturizable, .resizable, .fullSizeContentView],
backing: .buffered, defer: false)
w.contentView = NSHostingView(rootView: WindowView())
w.makeKeyAndOrderFront(nil)
w.isReleasedWhenClosed = false // <--- important
windowRef = w
}
We need to keep reference to window, try the following
struct ContentView: View
{
#State private var windowRef: NSWindow?
var body: some View
{
Button(action: {openMyWindow()},
label: {Image(systemName: "paperplane")})
.padding()
}
func openMyWindow()
{
// handle previously opened window here somehow if needed
guard windowRef == nil else { return }
windowRef = NSWindow(
contentRect: NSRect(x: 100, y: 100, width: 100, height: 600),
styleMask: [.titled, .closable, .miniaturizable, .resizable, .fullSizeContentView],
backing: .buffered, defer: false)
windowRef?.contentView = NSHostingView(rootView: WindowView())
windowRef?.makeKeyAndOrderFront(nil)
}
}
Related
I'm trying to print the contents of a SwiftUI view on macOS. According to the documentation, this seems like it should be possible by giving the NSPrintOperation an NSView created by an NSHostingView. The SwiftUI view's body contains several Text views and an Image view, with borders around those views. All of the Text gets printed, however the Image and the borders are not visible. Is there something else needed to make this work?
Here is a sample to demonstrate the problem. Just create a new macOS App, replace the ContentView with the code below and then enable Printing in Signing & Capabilities:
struct ContentView: View {
var body: some View {
VStack {
Button("Print", action: self.onPrint )
Divider()
Print_Preview()
}
}
private func onPrint() {
let pi = NSPrintInfo.shared
pi.topMargin = 0.0
pi.bottomMargin = 0.0
pi.leftMargin = 0.0
pi.rightMargin = 0.0
pi.orientation = .landscape
pi.isHorizontallyCentered = false
pi.isVerticallyCentered = false
pi.scalingFactor = 1.0
let rootView = Print_Preview()
let view = NSHostingView(rootView: rootView)
view.frame.size = CGSize(width: 300, height: 300)
let po = NSPrintOperation(view: view, printInfo: pi)
po.printInfo.orientation = .landscape
po.showsPrintPanel = true
po.showsProgressPanel = true
po.printPanel.options.insert(NSPrintPanel.Options.showsPaperSize)
po.printPanel.options.insert(NSPrintPanel.Options.showsOrientation)
if po.run() {
print("In Print completion")
}
}
struct Print_Preview: View {
var body: some View {
VStack(alignment: .leading) {
Text("Bordered Text Above Bordered Image")
.font(.system(size: 8))
.padding(5)
.border(Color.black, width: 2)
Image(systemName: "printer")
.resizable()
.padding(5)
.border(Color.black, width: 2)
.frame(width: 100, height: 100)
Text("Bordered Text Below Bordered Image")
.font(.system(size: 8))
.padding(5)
.border(Color.black, width: 2)
}
.padding()
.foregroundColor(Color.black)
.background(Color.white)
.frame(width: 200, height: 200)
}
}
}
Also, here are screenshots of the App and Print Panel.
Thanks to #Willeke for the comment with a pointer and to #user2120275 for asking a different question that happened to contain the trick needed to fix my problem. The solution is to create an NSImageView from the NSView returned by the NSHostingView, and then print that NSImageView instead of the original NSView.
My sample code above can be made to work by replacing these two lines:
view.frame.size = CGSize(width: 300, height: 300)
let po = NSPrintOperation(view: view, printInfo: pi)
with the following:
let contentRect = NSRect(x: 0, y: 0, width: 300, height: 300)
view.frame.size = contentRect.size
let newWindow = NSWindow(
contentRect: contentRect,
styleMask: [.titled, .closable, .miniaturizable, .resizable, .fullSizeContentView],
backing: .buffered, defer: false)
newWindow.contentView = view
let myNSBitMapRep = newWindow.contentView!.bitmapImageRepForCachingDisplay(in: contentRect)!
newWindow.contentView!.cacheDisplay(in: contentRect, to: myNSBitMapRep)
let myNSImage = NSImage(size: myNSBitMapRep.size)
myNSImage.addRepresentation(myNSBitMapRep)
let nsImageView = NSImageView(frame: contentRect)
nsImageView.image = myNSImage
let po = NSPrintOperation(view: nsImageView, printInfo: pi)
I was trying to hide statusBar of a view but I noticed it does not work in macOS, also Blur did not worked also opacity did not work! it look like I am trying programming new language, apple said code in place and apply every where! why I can not done those simple task in macOS?
struct ContentView: View {
var body: some View {
HStack {
Button { print("OK was clicked!") } label: { Text("OK").frame(width: 100) }
Button { print("Close was clicked!") } label: { Text("Close").frame(width: 100) }
}
.frame(width: 400, height: 200)
.background(Color.white.opacity(0.4).blur(radius: 0.5))
//.statusBar(hidden: true)
}
}
import SwiftUI
#main
struct macOSApp: App {
var body: some Scene {
WindowGroup {
ContentView()
}
}
}
Hope it helps you.
Thank you.
class AppDelegate: NSObject, UIApplicationDelegate {
func applicationDidFinishLaunching(_ aNotification: Notification) {
// Create the content view, to display the contents
let contentView = ContentView()
//to display content view beyond status bar.
.edgesIgnoringSafeArea(.top)
// Now, just create the window and set the content view.
window = NSWindow(
contentRect: NSRect(x: 0, y: 0, width: 480, height: 300),
styleMask: [.titled, .closable, .miniaturizable, .texturedBackground, .resizable, .fullSizeContentView],
backing: .buffered, defer: false)
window.center()
window.setFrameAutosaveName("Main Window")
//So, this does the maigc
//Hides the titlebar.
window.titlebarAppearsTransparent = true
window.titleVisibility = .hidden
window.contentView = NSHostingView(rootView: contentView)
window.makeKeyAndOrderFront(nil)
}
}
I'm starting a new macOS app with SwiftUI but I have a big problem.
The app needs a full size contentView (underneath titleBar) but I can't accomplish. On a new project using Storyboards works fine, but with SwiftUI not.
My code:
Result:
And it should look like this:
Any ideas?
Thanks!
I just used the following variant in AppDelegate, the content of ContentView and others can be any
func applicationDidFinishLaunching(_ aNotification: Notification) {
// Create the SwiftUI view that provides the window contents.
let contentView = ContentView()
.edgesIgnoringSafeArea(.top) // to extend entire content under titlebar
// Create the window and set the content view.
window = NSWindow(
contentRect: NSRect(x: 0, y: 0, width: 480, height: 300),
styleMask: [.titled, .closable, .miniaturizable, .texturedBackground, .resizable, .fullSizeContentView],
backing: .buffered, defer: false)
window.center()
window.setFrameAutosaveName("Main Window")
window.titlebarAppearsTransparent = true // as stated
window.titleVisibility = .hidden // no title - all in content
window.contentView = NSHostingView(rootView: contentView)
window.makeKeyAndOrderFront(nil)
}
The safe area does not extend underneath a transparent title bar. You can use edgesIgnoringSafeArea to tell your content view edges to ignore the safe area. Something that resembles your example:
struct ContentView: View {
var body: some View {
HStack(spacing: 0) {
Text("Hello, World!")
.frame(maxWidth: 200, maxHeight: .infinity)
.background(Color.red)
Text("Hello, World!")
.frame(maxWidth: .infinity, maxHeight: .infinity)
.background(Color.black)
}.edgesIgnoringSafeArea(.all)
}
}
Update:
If you want to use a NavigationView, you have to add edgesIgnoringSafeArea to its contents as well:
struct ContentView: View {
var body: some View {
NavigationView {
Text("Hello, World!")
.frame(maxWidth: 200, maxHeight: .infinity)
.background(Color.red)
.edgesIgnoringSafeArea(.all)
Text("Hello, World!")
.frame(maxWidth: .infinity, maxHeight: .infinity)
.background(Color.black)
.edgesIgnoringSafeArea(.all)
}.edgesIgnoringSafeArea(.all)
}
}
Unfortunately, this will initially show a title bar at the moment, apparently until you force a full window redraw. Once you move the window to a different display or hide and show it again, the title bar disappears. So, my guess is that this will be fixed at some point.
Right now, you can programmatically force a hide & show by adding
DispatchQueue.main.async {
self.window.orderOut(nil)
self.window.makeKeyAndOrderFront(nil)
}
after window.makeKeyAndOrderFront(nil) in applicationDidFinishLaunching. It will add a very short animation however. If it bothers you, you may be able to turn that off with NSWindow.animationBehavior or something like that.
Update 2: Apparently, if you remove the initial window.makeKeyAndOrderFront(nil) and replace it with the dispatch queue logic above it won't animate. So in the end you'll have
func applicationDidFinishLaunching(_ aNotification: Notification) {
let contentView = ContentView()
window = NSWindow(
contentRect: NSRect(x: 0, y: 0, width: 480, height: 300),
styleMask: [.titled, .closable, .miniaturizable, .resizable, .fullSizeContentView, .texturedBackground],
backing: .buffered, defer: false)
window.titlebarAppearsTransparent = true
window.center()
window.setFrameAutosaveName("Main Window")
window.contentView = NSHostingView(rootView: contentView)
// window.makeKeyAndOrderFront(self) <- don't call it here
DispatchQueue.main.async {
self.window.orderOut(nil)
self.window.makeKeyAndOrderFront(nil)
}
}
Just for more information in the case of SwiftUI App life cycle.
You need to set the window style to HiddenTitleBarWindowStyle :
WindowGroup {
ContentView()
}.windowStyle(HiddenTitleBarWindowStyle())
Minimal solution in pure SwiftUI.
#main
struct X_App: App {
var body: some Scene {
WindowGroup {
ContentView()
.edgesIgnoringSafeArea(.top)
}.windowStyle(.hiddenTitleBar)
}}
I'm using SwiftUI for a Mac app where the main window contains a NavigationView. This NavigationView contains a sidebar list. When an item in the sidebar is selected, it changes the view displayed in the detail view. The views presented in the detail view are different sizes which should cause the size of the window to change when they are displayed. However, when the detail view changes size the window does not change size to accommodate the new detail view.
How can I make the window size change according to the size of the NavigationView?
My example code for the app is below:
import SwiftUI
struct View200: View {
var body: some View {
Text("200").font(.title)
.frame(width: 200, height: 400)
.background(Color(.systemRed))
}
}
struct View500: View {
var body: some View {
Text("500").font(.title)
.frame(width: 500, height: 300)
.background(Color(.systemBlue))
}
}
struct ViewOther: View {
let item: Int
var body: some View {
Text("\(item)").font(.title)
.frame(width: 300, height: 200)
.background(Color(.systemGreen))
}
}
struct DetailView: View {
let item: Int
var body: some View {
switch item {
case 2:
return AnyView(View200())
case 5:
return AnyView(View500())
default:
return AnyView(ViewOther(item: item))
}
}
}
struct ContentView: View {
var body: some View {
NavigationView {
List {
ForEach(1...10, id: \.self) { index in
NavigationLink(destination: DetailView(item: index)) {
Text("Link \(index)")
}
}
}
.listStyle(SidebarListStyle())
}
.frame(maxWidth: .infinity, maxHeight: .infinity)
}
}
struct ContentView_Previews: PreviewProvider {
static var previews: some View {
ContentView()
}
}
And here is what the example app looks like when the detail view changes size:
Here is demo of possible approach that works. I did it on one different view, because you will need to redesign your solution to adopt it.
Demo
1) The view requiring window animated resize
struct ResizingView: View {
public static let needsNewSize = Notification.Name("needsNewSize")
#State var resizing = false
var body: some View {
VStack {
Button(action: {
self.resizing.toggle()
NotificationCenter.default.post(name: Self.needsNewSize, object:
CGSize(width: self.resizing ? 800 : 400, height: self.resizing ? 350 : 200))
}, label: { Text("Resize") } )
}
.frame(minWidth: 400, maxWidth: .infinity, minHeight: 200, maxHeight: .infinity)
}
}
2) Window's owner (in this case AppDelegate)
import Cocoa
import SwiftUI
import Combine
#NSApplicationMain
class AppDelegate: NSObject, NSApplicationDelegate {
var window: NSWindow!
var subscribers = Set<AnyCancellable>()
func applicationDidFinishLaunching(_ aNotification: Notification) {
let contentView = ResizingView()
window = NSWindow(
contentRect: NSRect(x: 0, y: 0, width: 480, height: 300), // just default
styleMask: [.titled, .closable, .miniaturizable, .resizable, .fullSizeContentView],
backing: .buffered, defer: false)
window.center()
window.setFrameAutosaveName("Main Window")
window.contentView = NSHostingView(rootView: contentView)
window.makeKeyAndOrderFront(nil)
NotificationCenter.default.publisher(for: ResizingView.needsNewSize)
.sink(receiveCompletion: {_ in}) { [unowned self] notificaiton in
if let size = notificaiton.object as? CGSize {
var frame = self.window.frame
let old = self.window.contentRect(forFrameRect: frame).size
let dX = size.width - old.width
let dY = size.height - old.height
frame.origin.y -= dY // origin in flipped coordinates
frame.size.width += dX
frame.size.height += dY
self.window.setFrame(frame, display: true, animate: true)
}
}
.store(in: &subscribers)
}
...
Asperi's answer works for me, but the animation is not working on Big Sur 11.0.1, Xcode 12.2. Thankfully, the animation works if you wrap it in an NSAnimationContext:
NSAnimationContext.runAnimationGroup({ context in
context.timingFunction = CAMediaTimingFunction(name: .easeIn)
window!.animator().setFrame(frame, display: true, animate: true)
}, completionHandler: {
})
Also it should be mentioned that ResizingView and window don't have to be initialized inside AppDelegate; you can continue using SwiftUI's App struct:
#main
struct MyApp: App {
#NSApplicationDelegateAdaptor(AppDelegate.self) var appDelegate
var body: some Scene {
WindowGroup {
ResizingView()
}
}
}
class AppDelegate: NSObject, NSApplicationDelegate {
var window: NSWindow?
var subscribers = Set<AnyCancellable>()
func applicationDidBecomeActive(_ notification: Notification) {
self.window = NSApp.mainWindow
}
func applicationDidFinishLaunching(_ aNotification: Notification) {
setupResizeNotification()
}
private func setupResizeNotification() {
NotificationCenter.default.publisher(for: ResizingView.needsNewSize)
.sink(receiveCompletion: {_ in}) { [unowned self] notificaiton in
if let size = notificaiton.object as? CGSize, self.window != nil {
var frame = self.window!.frame
let old = self.window!.contentRect(forFrameRect: frame).size
let dX = size.width - old.width
let dY = size.height - old.height
frame.origin.y -= dY // origin in flipped coordinates
frame.size.width += dX
frame.size.height += dY
NSAnimationContext.runAnimationGroup({ context in
context.timingFunction = CAMediaTimingFunction(name: .easeIn)
window!.animator().setFrame(frame, display: true, animate: true)
}, completionHandler: {
})
}
}
.store(in: &subscribers)
}
}
the following will not solve your problem, but might (with some extra work), lead you to a solution.
I did not have much to investigate further, but it's possible to overwrite the setContentSize method in NSWindow (by subclassing of course). That way you can override the default behavior, which is setting the window frame without an animation.
The problem you will have to figure out is the fact that for complex views such as yours, the setContentSize method is called repeatedly, causing the animation not to work properly.
The following example works fine, but that's because we are dealing with a very simple view:
#NSApplicationMain
class AppDelegate: NSObject, NSApplicationDelegate {
var window: NSWindow!
func applicationDidFinishLaunching(_ aNotification: Notification) {
// Create the SwiftUI view that provides the window contents.
let contentView = ContentView()
// Create the window and set the content view.
window = AnimatableWindow(
contentRect: NSRect(x: 0, y: 0, width: 480, height: 300),
styleMask: [.titled, .closable, .miniaturizable, .resizable, .fullSizeContentView],
backing: .buffered, defer: false)
window.center()
window.setFrameAutosaveName("Main Window")
window.contentView = NSHostingView(rootView: contentView)
window.makeKeyAndOrderFront(nil)
}
func applicationWillTerminate(_ aNotification: Notification) {
// Insert code here to tear down your application
}
}
class AnimatableWindow: NSWindow {
var lastContentSize: CGSize = .zero
override func setContentSize(_ size: NSSize) {
if lastContentSize == size { return } // prevent multiple calls with the same size
lastContentSize = size
self.animator().setFrame(NSRect(origin: self.frame.origin, size: size), display: true, animate: true)
}
}
struct ContentView: View {
#State private var flag = false
var body: some View {
VStack {
Button("Change") {
self.flag.toggle()
}
}.frame(width: self.flag ? 100 : 300 , height: 200)
}
}
How do I properly setup a ScrollView with SwiftUI in a Mac app? The example below clips the last item.
import SwiftUI
struct NameRow: View {
var name: String
var body: some View {
VStack {
Spacer()
Text("\(name)")
Spacer()
Divider()
}.frame(width: 100, height: 40)
}
}
struct ContentView: View {
let names = ["Homer", "Marge", "Lisa", "Bart", "Maggie", "Krusty", "Burns", "Nelson", "Otto"]
var body: some View {
VStack {
ScrollView {
ForEach(names, id: \.self) { name in
NameRow(name: name)
}
}
}.frame(width: 100, height: 160)
}
}
As shown in the image, the last item is clipped by the window. This view is scrolled to the bottom but the "Otto" item does not fully display.
If you remove the .fullSizeContentView from the window initialization in AppDelegate.swift so it looks like the following, then it will fully display the list.
window = NSWindow(
contentRect: NSRect(x: 0, y: 0, width: 480, height: 300),
styleMask: [.titled, .closable, .miniaturizable, .resizable],
backing: .buffered, defer: false)
I don't know if this is a bug or by design.