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Reply to How can I achieve this effect using SwiftUI or ShaderGraph?
Hi @NahtanMak I was able to achieve a similar effect using shader graph. I adjust each pixel's opacity based on its distance from the center of the image. I used texture coordinates to calculate that distance. Here's how to setup the graph: Add an Image node. Connect its Out to the color property on an UnlitSurface. Add a TextureCoordinates node. Connect its Out to the In of a Remap node. For both columns of the Remap node, change:Out Low to -1 and Out High to 1. Drag its Out to the In of Magnitude node. Drag the Out of the Magnitude node to a new Remap node. Set Out Low to 1 and Out High to 0. Drag the Out to Opacity on the UnlitSurface you created in the first step. Note: you can change the In Low property on the Remap node you created in the previous step to control when the gradient begins. If you set it to 0 the gradient will start in the center of the image. If you set it to 0.5 the gradient will start 50% from the center of the image. If you set it to 1, there will be no gradient. Please accep
Topic: Spatial Computing SubTopic: General Tags:
Feb ’25
Reply to NSLayoutManager laying out overlapping text into the same NSTextContainer even when there are more containers available.
Thank you. I decided to keep trying at it - as my code base was a little too much to simplify in order to share it. I couldn't solve it no matter what I did at a granular level. BUT, when I simply removed my measuringLayoutManager and had all code use a single layoutManager, the problems went away. Something in the text system really did not like it when I had more than one layout manager laying out the same text storage, even though I ensured that that second layout manager used a separate set of text containers, and even though those text containers were not tied to any views, nor ever passed as objects/references. Merely having a second layout manager assigned to the text storage, doing layout passes into its own containers in order to calculate sizes seemed to be the source of the problem. I simplified and am using a single layout manager now. My calculated sizes are the same as they were when calculated by my second measuringLayoutManager. So there was nothing wrong with the calculations there. But I no
Topic: UI Frameworks SubTopic: AppKit Tags:
Feb ’25
NSLayoutManager returning inconsistent values for a glyph's text container and its line fragment rect
TLDR: NSLayoutManager's textContainer(forGlyphAt:effectiveRange:) and lineFragmentRect(forGlyphRange:effectiveRange:) are returning inconsistent results. Context: I'm developing a word processing app that paginates from an NSTextStorage using NSLayoutManager. My app uses a text attribute (.columnType) to paginate sub-ranges of the text at a time, ensuring that each columnRange gets a container (or series of containers across page breaks) to fit. This is to support both multi-column and standard full-page-width content. After any user edit, I update pagination data in my Paginator model class. I calcuate frames/sizes for the views/containers, along with what superview they belong to (page). The UI updates accordingly. In order to determine whether the columnRange has overflowed from a container due to a page break OR whether the range of text hasn't overflowed its container and is actually using less space than available and should be sized down, I call both: layoutManager.textContainer(forGlyphAt: la
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535
Feb ’25
How to Export OBJ with Texture (JPG + MTL) from ARKit LiDAR Scan in iOS?
I am using ARKit with RealityKit to scan objects using LiDAR on iOS. I can generate an OBJ file from ARMeshAnchors, but I am missing the texture export (JPG + MTL). What I Have So Far: Successfully capturing mesh using ARMeshAnchor. Converting mesh into MDLAsset and exporting .obj. I need help generating the .jpg texture and linking it to the .mtl file. private func exportScannedObject() { guard let camera = arView.session.currentFrame?.camera else { return } func convertToAsset(meshAnchors: [ARMeshAnchor]) -> MDLAsset? { guard let device = MTLCreateSystemDefaultDevice() else {return nil} let asset = MDLAsset() for anchor in meshAnchors { let mdlMesh = anchor.geometry.toMDLMesh(device: device, camera: camera, modelMatrix: anchor.transform) // Apply a gray material to the mesh let material = MDLMaterial(name: GrayMaterial, scatteringFunction: MDLScatteringFunction()) material.setProperty(MDLMaterialProperty(name: baseColor, semantic: .baseColor, float3: SIMD3(0.5, 0.5, 0.5))) // Gray color if let submeshes
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498
Feb ’25
Getting Error: Type '()' cannot conform to 'View'
can't see what the problem is .. Im getting the error: Type '()' cannot conform to 'View' struct CalendarView: View { @StateObject private var viewModel = CalendarViewModel() @State private var selectedDate: CalendarDate? @State private var showModal = false var body: some View { VStack { Text(Calendar App) .font(.largeTitle) .padding() GridStack(rows: 5, columns: 7) { row, col in let index = row * 7 + col if index < viewModel.calendarDates.count { let calendarDate = viewModel.calendarDates[index] Text((Calendar.current.component(.day, from: calendarDate.date))) .frame(width: 40, height: 40) .background(calendarDate.isSelected ? Color.blue : Color.clear) .cornerRadius(10) .foregroundColor(calendarDate.isSelected ? Color.white : Color.black) .onLongPressGesture { selectedDate = calendarDate showModal = true } } } } .background(Color.gray) .sheet(isPresented: $showModal) { if let date = selectedDate { DateSelectionModal(selectedDate: date) } } } } struct GridStack: View { let rows: Int let columns
Topic: UI Frameworks SubTopic: SwiftUI
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202
Feb ’25
SwiftUI Table column widths cannot be saved
I have a macOS app made with SwiftUI where I want to show a list of data in a tabular fashion. SwiftUI Table seems to be the only built-in component that can do this. I would like to let the user size the columns and have their widths restored when the app is relaunched. I can find no documentation on how to do this and it does not seem to be saved and restored automatically. I can find no way to listen for changes in the column widths when the user resizes and no way to set the size from code. For a macOS app it seems that the only way to set the width of a column is to use e.g. .width(min: 200, max: 200). This in effect disables resizing of the column. It seems that idealSize is totally ignored on macOS. Any suggestions?
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393
Feb ’25
Network Extension Unexpectedly Terminated by iOS
We are experiencing an issue where our iOS app’s network extension (acting as a VPN) is being unexpectedly terminated by the operating system. The termination appears identical to a user-initiated stop, as the extension receives the following call: NEProviderStopReasonUserInitiated. The issue occurs sporadically but can happen 10–20 times per day on devices with less than 10% free storage. On one affected device, opening the Camera app (or using the camera within another app like WhatsApp) consistently triggers the issue, making it easily reproducible. Memory consumption does not seem to be the cause—the extension is stopped while using only ~10MB of memory, well below the 50MB limit. We noticed a pattern related to swap usage: • On affected devices, the “Swap Used” column shows very low values (a few MB). • On unaffected devices, swap usage is significantly higher (hundreds of MB). • This is the only clear difference we’ve observed. The issue occurs across different device models and iOS versions (1
2
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326
Feb ’25
Not able to view PDF on a website when I open it in Safari browser.
When you open the Directorate General of civil Aviation, India website then in the top bar bring the cursor to “Regulations and Guidance” under that there will be a drop down which will give numerous options. In that go to Centre Column “Civil Aviation Requirements”. Then click on ”Section 7” then click on “Part II”. Actually on a laptop it’s a 4 page document but on my iPad it’s just an image of the first page. I can’t read any of the PDF’s.
Topic: Safari & Web SubTopic: General
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200
Feb ’25
Fatal Error in Swift Playground
Fatal Error in Swift Playground Description I'm experiencing a catastrophic error when importing Package Dependency in any Swift Playgrounds that has icon or name that caused the whole Playground won't work anymore with error messages below. I'm current running macOS Sequoia 15.3 (24D60) and Swift Playgrounds 4.6.1. They're all up-to-date. Reproduction Open Swift Playgrounds and and create a new project. Import a package dependency https://github.com/simibac/ConfettiSwiftUI.git Rename the project and add an icon Then you should able the reproduce the problem. I strongly believed that this is a serious bug. You'll find that Assets in the left column are disappeared and appeared Assets.xcassets, you're unable to reveal the Dependency in the column like the reference picture above. The whole Playground is destroyed now and unable to work anymore.
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533
Feb ’25
AppleScript help
Hello everyone, I would like to use AppleScript to transform a .csv file. To make things easier to understand, I'm attaching two files: 1- The original file in csv format 2- The file as I'd like it to look after I've run it through the script. Here are the steps involved 1-Open the file in numbers (Note: the file is located in the download folder). 2-Delete the first 6 lines 3-Delete all font styles and cell colors 4-Combine all cells in the nature of operation column of the same operation belonging to the same date in the first cell of the operation, deleting all spaces in the text is not necessary for each operation. 5- Delete all empty lines. I hope I've made my request clear. If any of you have the knowledge to do this, if it can be done at all, I'd be very grateful for their help in writing the script. Thank you in advance. 1.csv 2.csv
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479
Feb ’25
Reply to libncftp v. macOS Native curl with Secure Transport APIs and Session Reuse
But, just to confirm, that means that can reproduce this with a server under your control, right? If so, that’s definitely a progress. Confirmed. A correlating factor seems to be those servers written against OpenSSL, possibly running on Linux. See below. OK. And cases 1 and 2 (curl with Secure Transport, and Fetch 5.8) work whereas case 3 (your libncftp code) fails, right? Confirmed. FTPS Server Secure Control-only Secure Control+Data test.rebex.net Custom .NET Implementation ✅ ✅ Microsoft FTP Service ✅ ❌ proftpd ✅ ❌ pureftpd ✅ ❌ vsftpd ✅ ❌ Until I added code to utilize SSLSetPeerID, Secure Control+Data was ❌ up and down that column. Adding code to work with SSLSetPeerID allowed the test.rebex.net Custom .NET Implementation to work on stop responding with 425: Cannot secure data connection - TLS session resumption required. on attempting to establish the secure data channel session.
Topic: Privacy & Security SubTopic: General Tags:
Feb ’25
SwiftData integration for coexistence with CoreData Error: Persistent truncated
When integrating SwiftData for an already existing app that uses CoreData as data management, I encounter errors. When building the ModelContainer for the first time, the following error appears: Error: Persistent History (184) has to be truncated due to the following entities being removed (all Entities except for the 2 where I defined a SwiftData Model) class SwiftDataManager: ObservableObject { static let shared = SwiftDataManager() private let persistenceManager = PersistenceManager.shared private init(){} lazy var modelContainer: ModelContainer = { do { let storeUrl = persistenceManager.storeURL() let schema = Schema([ HistoryIncident.self, HistoryEvent.self ]) let modelConfig = ModelConfiguration(url: storeUrl) return try ModelContainer(for: schema, configurations: [modelConfig]) } catch { fatalError(Could not create ModelContainer: (error)) } }() } @Model public class HistoryIncident { var missionNr: String? @Relationship(deleteRule: .cascade) var events: [HistoryEvent]? public init(){} } @Model class
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684
Feb ’25
Reply to Correct way to label TextField inside Form in SwiftUI
I've never needed to do this, but I've had a quick look, and this seems reasonable: var body: some View { VStack(alignment: .leading) { Form { Text(First Name) TextField(, text: $firstName, prompt: Text(Required)) Text(Last Name) .padding(.top, 10) TextField(, text: $lastName, prompt: Text(Required)) Text(Email) .padding(.top, 10) TextField(, text: $email, prompt: Text(Required)) Text(Job) .padding(.top, 10) TextField(, text: $job, prompt: Text(Required)) Text(Role) .padding(.top, 10) TextField(, text: $role, prompt: Text(Required)) } .formStyle(.columns) .padding(.horizontal, 16) .padding(.vertical, 16) Spacer() } } The key is .formStyle(.columns).
Topic: UI Frameworks SubTopic: SwiftUI Tags:
Feb ’25
Reply to How can I achieve this effect using SwiftUI or ShaderGraph?
Hi @NahtanMak I was able to achieve a similar effect using shader graph. I adjust each pixel's opacity based on its distance from the center of the image. I used texture coordinates to calculate that distance. Here's how to setup the graph: Add an Image node. Connect its Out to the color property on an UnlitSurface. Add a TextureCoordinates node. Connect its Out to the In of a Remap node. For both columns of the Remap node, change:Out Low to -1 and Out High to 1. Drag its Out to the In of Magnitude node. Drag the Out of the Magnitude node to a new Remap node. Set Out Low to 1 and Out High to 0. Drag the Out to Opacity on the UnlitSurface you created in the first step. Note: you can change the In Low property on the Remap node you created in the previous step to control when the gradient begins. If you set it to 0 the gradient will start in the center of the image. If you set it to 0.5 the gradient will start 50% from the center of the image. If you set it to 1, there will be no gradient. Please accep
Topic: Spatial Computing SubTopic: General Tags:
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Feb ’25
Reply to NSLayoutManager laying out overlapping text into the same NSTextContainer even when there are more containers available.
Thank you. I decided to keep trying at it - as my code base was a little too much to simplify in order to share it. I couldn't solve it no matter what I did at a granular level. BUT, when I simply removed my measuringLayoutManager and had all code use a single layoutManager, the problems went away. Something in the text system really did not like it when I had more than one layout manager laying out the same text storage, even though I ensured that that second layout manager used a separate set of text containers, and even though those text containers were not tied to any views, nor ever passed as objects/references. Merely having a second layout manager assigned to the text storage, doing layout passes into its own containers in order to calculate sizes seemed to be the source of the problem. I simplified and am using a single layout manager now. My calculated sizes are the same as they were when calculated by my second measuringLayoutManager. So there was nothing wrong with the calculations there. But I no
Topic: UI Frameworks SubTopic: AppKit Tags:
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Views
Activity
Feb ’25
NSLayoutManager returning inconsistent values for a glyph's text container and its line fragment rect
TLDR: NSLayoutManager's textContainer(forGlyphAt:effectiveRange:) and lineFragmentRect(forGlyphRange:effectiveRange:) are returning inconsistent results. Context: I'm developing a word processing app that paginates from an NSTextStorage using NSLayoutManager. My app uses a text attribute (.columnType) to paginate sub-ranges of the text at a time, ensuring that each columnRange gets a container (or series of containers across page breaks) to fit. This is to support both multi-column and standard full-page-width content. After any user edit, I update pagination data in my Paginator model class. I calcuate frames/sizes for the views/containers, along with what superview they belong to (page). The UI updates accordingly. In order to determine whether the columnRange has overflowed from a container due to a page break OR whether the range of text hasn't overflowed its container and is actually using less space than available and should be sized down, I call both: layoutManager.textContainer(forGlyphAt: la
Replies
2
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0
Views
535
Activity
Feb ’25
How to Export OBJ with Texture (JPG + MTL) from ARKit LiDAR Scan in iOS?
I am using ARKit with RealityKit to scan objects using LiDAR on iOS. I can generate an OBJ file from ARMeshAnchors, but I am missing the texture export (JPG + MTL). What I Have So Far: Successfully capturing mesh using ARMeshAnchor. Converting mesh into MDLAsset and exporting .obj. I need help generating the .jpg texture and linking it to the .mtl file. private func exportScannedObject() { guard let camera = arView.session.currentFrame?.camera else { return } func convertToAsset(meshAnchors: [ARMeshAnchor]) -> MDLAsset? { guard let device = MTLCreateSystemDefaultDevice() else {return nil} let asset = MDLAsset() for anchor in meshAnchors { let mdlMesh = anchor.geometry.toMDLMesh(device: device, camera: camera, modelMatrix: anchor.transform) // Apply a gray material to the mesh let material = MDLMaterial(name: GrayMaterial, scatteringFunction: MDLScatteringFunction()) material.setProperty(MDLMaterialProperty(name: baseColor, semantic: .baseColor, float3: SIMD3(0.5, 0.5, 0.5))) // Gray color if let submeshes
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0
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0
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498
Activity
Feb ’25
Getting Error: Type '()' cannot conform to 'View'
can't see what the problem is .. Im getting the error: Type '()' cannot conform to 'View' struct CalendarView: View { @StateObject private var viewModel = CalendarViewModel() @State private var selectedDate: CalendarDate? @State private var showModal = false var body: some View { VStack { Text(Calendar App) .font(.largeTitle) .padding() GridStack(rows: 5, columns: 7) { row, col in let index = row * 7 + col if index < viewModel.calendarDates.count { let calendarDate = viewModel.calendarDates[index] Text((Calendar.current.component(.day, from: calendarDate.date))) .frame(width: 40, height: 40) .background(calendarDate.isSelected ? Color.blue : Color.clear) .cornerRadius(10) .foregroundColor(calendarDate.isSelected ? Color.white : Color.black) .onLongPressGesture { selectedDate = calendarDate showModal = true } } } } .background(Color.gray) .sheet(isPresented: $showModal) { if let date = selectedDate { DateSelectionModal(selectedDate: date) } } } } struct GridStack: View { let rows: Int let columns
Topic: UI Frameworks SubTopic: SwiftUI
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2
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0
Views
202
Activity
Feb ’25
Reply to SwiftUI Table column widths cannot be saved
How? I cannot see how to read the width and I cannot see how to set width? I can fix the width but then the user cannot resize the columns. Are there any way to achieve this with any other components in SwiftUI?
Topic: UI Frameworks SubTopic: SwiftUI Tags:
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Feb ’25
Reply to Network Extension Unexpectedly Terminated by iOS
[quote='774113021, maxpe, /thread/774113, /profile/maxpe'] On affected devices, the “Swap Used” column shows very low values (a few MB). [/quote] Where are you seeing this Swap Used column? Share and Enjoy — Quinn “The Eskimo!” @ Developer Technical Support @ Apple let myEmail = eskimo + 1 + @ + apple.com
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Feb ’25
SwiftUI Table column widths cannot be saved
I have a macOS app made with SwiftUI where I want to show a list of data in a tabular fashion. SwiftUI Table seems to be the only built-in component that can do this. I would like to let the user size the columns and have their widths restored when the app is relaunched. I can find no documentation on how to do this and it does not seem to be saved and restored automatically. I can find no way to listen for changes in the column widths when the user resizes and no way to set the size from code. For a macOS app it seems that the only way to set the width of a column is to use e.g. .width(min: 200, max: 200). This in effect disables resizing of the column. It seems that idealSize is totally ignored on macOS. Any suggestions?
Replies
2
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0
Views
393
Activity
Feb ’25
Network Extension Unexpectedly Terminated by iOS
We are experiencing an issue where our iOS app’s network extension (acting as a VPN) is being unexpectedly terminated by the operating system. The termination appears identical to a user-initiated stop, as the extension receives the following call: NEProviderStopReasonUserInitiated. The issue occurs sporadically but can happen 10–20 times per day on devices with less than 10% free storage. On one affected device, opening the Camera app (or using the camera within another app like WhatsApp) consistently triggers the issue, making it easily reproducible. Memory consumption does not seem to be the cause—the extension is stopped while using only ~10MB of memory, well below the 50MB limit. We noticed a pattern related to swap usage: • On affected devices, the “Swap Used” column shows very low values (a few MB). • On unaffected devices, swap usage is significantly higher (hundreds of MB). • This is the only clear difference we’ve observed. The issue occurs across different device models and iOS versions (1
Replies
2
Boosts
0
Views
326
Activity
Feb ’25
Not able to view PDF on a website when I open it in Safari browser.
When you open the Directorate General of civil Aviation, India website then in the top bar bring the cursor to “Regulations and Guidance” under that there will be a drop down which will give numerous options. In that go to Centre Column “Civil Aviation Requirements”. Then click on ”Section 7” then click on “Part II”. Actually on a laptop it’s a 4 page document but on my iPad it’s just an image of the first page. I can’t read any of the PDF’s.
Topic: Safari & Web SubTopic: General
Replies
2
Boosts
0
Views
200
Activity
Feb ’25
Fatal Error in Swift Playground
Fatal Error in Swift Playground Description I'm experiencing a catastrophic error when importing Package Dependency in any Swift Playgrounds that has icon or name that caused the whole Playground won't work anymore with error messages below. I'm current running macOS Sequoia 15.3 (24D60) and Swift Playgrounds 4.6.1. They're all up-to-date. Reproduction Open Swift Playgrounds and and create a new project. Import a package dependency https://github.com/simibac/ConfettiSwiftUI.git Rename the project and add an icon Then you should able the reproduce the problem. I strongly believed that this is a serious bug. You'll find that Assets in the left column are disappeared and appeared Assets.xcassets, you're unable to reveal the Dependency in the column like the reference picture above. The whole Playground is destroyed now and unable to work anymore.
Replies
2
Boosts
0
Views
533
Activity
Feb ’25
AppleScript help
Hello everyone, I would like to use AppleScript to transform a .csv file. To make things easier to understand, I'm attaching two files: 1- The original file in csv format 2- The file as I'd like it to look after I've run it through the script. Here are the steps involved 1-Open the file in numbers (Note: the file is located in the download folder). 2-Delete the first 6 lines 3-Delete all font styles and cell colors 4-Combine all cells in the nature of operation column of the same operation belonging to the same date in the first cell of the operation, deleting all spaces in the text is not necessary for each operation. 5- Delete all empty lines. I hope I've made my request clear. If any of you have the knowledge to do this, if it can be done at all, I'd be very grateful for their help in writing the script. Thank you in advance. 1.csv 2.csv
Replies
0
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0
Views
479
Activity
Feb ’25
Reply to libncftp v. macOS Native curl with Secure Transport APIs and Session Reuse
But, just to confirm, that means that can reproduce this with a server under your control, right? If so, that’s definitely a progress. Confirmed. A correlating factor seems to be those servers written against OpenSSL, possibly running on Linux. See below. OK. And cases 1 and 2 (curl with Secure Transport, and Fetch 5.8) work whereas case 3 (your libncftp code) fails, right? Confirmed. FTPS Server Secure Control-only Secure Control+Data test.rebex.net Custom .NET Implementation ✅ ✅ Microsoft FTP Service ✅ ❌ proftpd ✅ ❌ pureftpd ✅ ❌ vsftpd ✅ ❌ Until I added code to utilize SSLSetPeerID, Secure Control+Data was ❌ up and down that column. Adding code to work with SSLSetPeerID allowed the test.rebex.net Custom .NET Implementation to work on stop responding with 425: Cannot secure data connection - TLS session resumption required. on attempting to establish the secure data channel session.
Topic: Privacy & Security SubTopic: General Tags:
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Views
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Feb ’25
SwiftData integration for coexistence with CoreData Error: Persistent truncated
When integrating SwiftData for an already existing app that uses CoreData as data management, I encounter errors. When building the ModelContainer for the first time, the following error appears: Error: Persistent History (184) has to be truncated due to the following entities being removed (all Entities except for the 2 where I defined a SwiftData Model) class SwiftDataManager: ObservableObject { static let shared = SwiftDataManager() private let persistenceManager = PersistenceManager.shared private init(){} lazy var modelContainer: ModelContainer = { do { let storeUrl = persistenceManager.storeURL() let schema = Schema([ HistoryIncident.self, HistoryEvent.self ]) let modelConfig = ModelConfiguration(url: storeUrl) return try ModelContainer(for: schema, configurations: [modelConfig]) } catch { fatalError(Could not create ModelContainer: (error)) } }() } @Model public class HistoryIncident { var missionNr: String? @Relationship(deleteRule: .cascade) var events: [HistoryEvent]? public init(){} } @Model class
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1
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0
Views
684
Activity
Feb ’25
Reply to Correct way to label TextField inside Form in SwiftUI
I've never needed to do this, but I've had a quick look, and this seems reasonable: var body: some View { VStack(alignment: .leading) { Form { Text(First Name) TextField(, text: $firstName, prompt: Text(Required)) Text(Last Name) .padding(.top, 10) TextField(, text: $lastName, prompt: Text(Required)) Text(Email) .padding(.top, 10) TextField(, text: $email, prompt: Text(Required)) Text(Job) .padding(.top, 10) TextField(, text: $job, prompt: Text(Required)) Text(Role) .padding(.top, 10) TextField(, text: $role, prompt: Text(Required)) } .formStyle(.columns) .padding(.horizontal, 16) .padding(.vertical, 16) Spacer() } } The key is .formStyle(.columns).
Topic: UI Frameworks SubTopic: SwiftUI Tags:
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Feb ’25