I would like to get some information of the connected display such as vendor number, eisaId, … after connecting the external display via “screen mirroring” -> “use as Separate Display” When the same display was connected through HDMI port or extend mode in screen mirroring, the information is not identical: HDMI Other display found - ID: 19241XXXX, Name: YYYY (Vendor: 19ZZZ, Model: 57WWW) Screen mirroring - extend mode Other display found - ID: 41288XX, Name: AAA (Vendor: 163ZYYBBB, Model: 16ZZWWYYY) I tried to get display information with the below method. func configureDisplays() { var onlineDisplayIDs = [CGDirectDisplayID](repeating: 0, count: 16) var displayCount: UInt32 = 0 guard CGGetOnlineDisplayList(16, &onlineDisplayIDs, &displayCount) == .success else { os_log("Unable to get display list.", type: .info) return } for onlineDisplayID in onlineDisplayIDs where onlineDisplayID != 0 { let name = DisplayManager.getDisplayNameByID(displayID: onlineDisplayID) let id = onlineDisplayID let vendorNumber = CGDisplayVendorNumber(onlineDisplayID) let modelNumber = CGDisplayModelNumber(onlineDisplayID) let serialNumber = CGDisplaySerialNumber(onlineDisplayID) if !DEBUG_SW, DisplayManager.isAppleDisplay(displayID: onlineDisplayID) { let appleDisplay = AppleDisplay(id, name: name, vendorNumber: vendorNumber, modelNumber: modelNumber, serialNumber: serialNumber, isVirtual: isVirtual, isDummy: isDummy) os_log("Apple display found - %{public}@", type: .info, "ID: \(appleDisplay.identifier), Name: \(appleDisplay.name) (Vendor: \(appleDisplay.vendorNumber ?? 0), Model: \(appleDisplay.modelNumber ?? 0))") } else { let otherDisplay = OtherDisplay(id, name: name, vendorNumber: vendorNumber, modelNumber: modelNumber, serialNumber: serialNumber, isVirtual: isVirtual, isDummy: isDummy) os_log("Other display found - %{public}@", type: .info, "ID: \(otherDisplay.identifier), Name: \(otherDisplay.name) (Vendor: \(otherDisplay.vendorNumber ?? 0), Model: \(otherDisplay.modelNumber ?? 0))") } } } Can we have the same display information when connect with an external display via HDMI port and extend mode in Screen Mirroring?

Since the type identifiers in UTCoreTypes.h have been deprecated, what's the expected way to use the Core Graphics APIs that use those types, particularly in C code that doesn't have access to the UniformTypeIdentifiers framework? Using CFSTR( "public.jpeg" ) works, but is that the new best practice, or have the core type definitions been moved/renamed?

I'm am planning to use CoreGraphics for its low-level functionality, so I wrote up a small snippet that I expected to work: #include <CoreGraphics/CoreGraphics.h> int main() { double rot = CGDisplayRotation(0); printf("Rotation %f\n", rot); return 0; } Unfortunately, it seems that the call CGDisplayRotation blocks. When I tried writing a similar snippet in XCode though, it works just fine but I will not be able to use XCode for unrelated reasons. Am I compiling incorrectly? Could this be a permission issue? I compiled with clang -Wall -framework CoreGraphics core.c -o core.o

I have a SwiftUI view which consists on a horizontal scroll view with some pages inside. The elements of the pages project shadows. I noticed that when scrolling, as elements stop being visible, the shadow gets removed abruptly. The shadow itself is visible when it gets removed and it creates an unpleasant effect. I tried adding a transparent background to the element with the shadow that extends its frame to see if that way the shadow would be retained longer but it didn't work. Is there any workaround to make this behave the way I would like? Thanks in advance It seems it's not possible to post videos on the dev forums but I captured 3 frames of it showcasing the issue.

Hello All, I am trying to compress PNG image by applying PNG Filters like(Sub, Up, Average, Paeth), I am applying filers using property kCGImagePropertyPNGCompressionFilter but there is no change seen in resultant images after trying any of the filter. What is the issue here can someone help me with this. Do I have compress image data after applying filter? If yes how to do that? Here is my source code CGImageDestinationRef outImageDestRef = NULL; long keyCounter = kzero; CFStringRef dstImageFormatStrRef = NULL; CFMutableDataRef destDataRef = CFDataCreateMutable(kCFAllocatorDefault,0); Handle srcHndl = //source image handle; ImageTypes srcImageType = //'JPEG', 'PNGf, etct; CGImageRef inImageRef = CreateCGImageFromHandle(srcHndl,srcImageType); if(inImageRef) { CFTypeRef keys[4] = {nil}; CFTypeRef values[4] = {nil}; dstImageFormatStrRef = CFSTR("public.png"); long png_filter = IMAGEIO_PNG_FILTER_SUB; //IMAGEIO_PNG_FILTER_SUB, IMAGEIO_PNG_FILTER_UP, IMAGEIO_PNG_FILTER_AVG, IMAGEIO_PNG_FILTER_PAETH .. it is one of this at a time keys[keyCounter] = kCGImagePropertyPNGCompressionFilter; values[keyCounter] = CFNumberCreate(NULL,kCFNumberLongType,&png_filter); keyCounter++; outImageDestRef = CGImageDestinationCreateWithData(destDataRef, dstImageFormatStrRef, 1, NULL); if(outImageDestRef) { // keys[keyCounter] = kCGImagePropertyDPIWidth; // values[keyCounter] = CFNumberCreate(NULL,kCFNumberLongType,&Resolution); // keyCounter++; // // keys[keyCounter] = kCGImagePropertyDPIHeight; // values[keyCounter] = CFNumberCreate(NULL,kCFNumberLongType,&Resolution); // keyCounter++; CFDictionaryRef options = CFDictionaryCreate(NULL,keys,values,keyCounter,&kCFTypeDictionaryKeyCallBacks,&kCFTypeDictionaryValueCallBacks); CGImageDestinationAddImage(outImageDestRef,inImageRef, options); CFRelease(options); status = CGImageDestinationFinalize(outImageDestRef); if(status == true) { UInt8 *destImagePtr = CFDataGetMutableBytePtr(destDataRef); destSize = CFDataGetLength(destDataRef); //using destImagePtr after this ... } CFRelease(outImageDestRef); } for(long cnt = kzero; cnt < keyCounter; cnt++) if(values[cnt]) CFRelease(values[cnt]); if(inImageRef) CGImageRelease(inImageRef); }

This status is essential for generating simulated CGEvents. Games often use this API to implement cursor lock. If we send CGEvents with a moving position, it's possible for the cursor to move outside the game window and cause the game window to become inactive. If we don't send CGEvents with updated positions, we can only control the mouse within the game but not in other windows or the desktop.

I'm attaching the crash log, hopefully someone can help me out. Thanks! crashlog.crash

How can I take the contents (i.e. the stroke and fill) of a CAShapeLayer and draw it into an MTLTexture, which can then be displayed with a normal vertex/fragment shader?

Translated Report (Full Report Below) Version: 1.0.0 (2.0) Code Type: X86-64 (Translated) Parent Process: launchd [1] User ID: 948009654 Date/Time: 2023-11-02 19:47:33.1522 +0800 OS Version: macOS 12.1 (21C52) Report Version: 12 Anonymous UUID: 815896E6-939E-002C-08C6-C903A4B87DF4 Sleep/Wake UUID: F06CECA0-3643-4423-A6F4-1163217FF863 Time Awake Since Boot: 100000 seconds Time Since Wake: 92675 seconds System Integrity Protection: enabled Crashed Thread: 0 CrBrowserMain Dispatch queue: com.apple.main-thread Exception Type: EXC_CRASH (SIGABRT) Exception Codes: 0x0000000000000000, 0x0000000000000000 Exception Note: EXC_CORPSE_NOTIFY Application Specific Information: Assertion failed: (mach_vm_map(mach_task_self(), &address, size, 0, VM_FLAGS_ANYWHERE | VM_MAKE_TAG(VM_MEMORY_COREGRAPHICS_BACKINGSTORES), port, 0, false, prot, prot, VM_INHERIT_SHARE) == KERN_SUCCESS), function backing_map, file CGSBackingStore.c, line 192. Kernel Triage: VM - Compressor failed a blocking pager_get VM - Compressor failed a blocking pager_get VM - Compressor failed a blocking pager_get VM - Compressor failed a blocking pager_get VM - Compressor failed a blocking pager_get Thread 0 Crashed:: CrBrowserMain Dispatch queue: com.apple.main-thread 0 <translation info unavailable> 0x108107a20 ??? 1 libsystem_kernel.dylib 0x7ff8023cd5e2 __sigreturn + 10 2 ??? 0x7fc103a4f190 ??? 3 libsystem_c.dylib 0x7ff80234dd10 abort + 123 4 libsystem_c.dylib 0x7ff80234d0be __assert_rtn + 314 5 SkyLight 0x7ff8075129de backing_map + 550 6 SkyLight 0x7ff8072c82ad lock_window_backing + 557 7 SkyLight 0x7ff807369f41 SLSDeviceLock + 54 8 CoreGraphics 0x7ff8076e6550 ripd_Lock + 56 9 CoreGraphics 0x7ff807678772 RIPLayerBltShape + 490 10 CoreGraphics 0x7ff8076769c7 ripc_Render + 328 11 CoreGraphics 0x7ff8076737d4 ripc_DrawRects + 482 12 CoreGraphics 0x7ff807673565 CGContextFillRects + 145 13 CoreGraphics 0x7ff8076734c4 CGContextFillRect + 117 14 CoreGraphics 0x7ff807672fe8 CGContextClearRect + 52 15 HIToolbox 0x7ff80b6176e0 HIMenuBarView::DrawOnce(CGRect, CGRect, bool, HIMenuBarTextAppearance, CGContext*) + 110 16 HIToolbox 0x7ff80b617640 HIMenuBarView::DrawIntoWindow(unsigned int*, CGRect, double, CGRect, bool, HIMenuBarTextAppearance, CGContext*) + 410 17 HIToolbox 0x7ff80b53c146 HIMenuBarView::DrawSelf(short, __HIShape const*, CGContext*) + 280 18 HIToolbox 0x7ff80b53bd56 HIMenuBarView::DrawingDelegateHandler(OpaqueEventHandlerCallRef*, OpaqueEventRef*, void*) + 262 19 HIToolbox 0x7ff80b520d1d DispatchEventToHandlers(EventTargetRec*, OpaqueEventRef*, HandlerCallRec*) + 1391 20 HIToolbox 0x7ff80b52014e SendEventToEventTargetInternal(OpaqueEventRef*, OpaqueEventTargetRef*, HandlerCallRec*) + 333 21 HIToolbox 0x7ff80b51ffef SendEventToEventTargetWithOptions + 45 22 HIToolbox 0x7ff80b53b8d3 HIView::SendDraw(short, OpaqueGrafPtr*, __HIShape const*, CGContext*) + 325 23 HIToolbox 0x7ff80b53b399 HIView::RecursiveDrawComposited(__HIShape const*, __HIShape const*, unsigned int, HIView*, CGContext*, unsigned char, double) + 571 24 HIToolbox 0x7ff80b53b56d HIView::RecursiveDrawComposited(__HIShape const*, __HIShape const*, unsigned int, HIView*, CGContext*, unsigned char, double) + 1039 25 HIToolbox 0x7ff80b53add8 HIView::DrawComposited(short, OpaqueGrafPtr*, __HIShape const*, unsigned int, HIView*, CGContext*) + 832 26 HIToolbox 0x7ff80b53aa89 HIView::Render(unsigned int, CGContext*) + 51 27 HIToolbox 0x7ff80b5521a9 FlushWindowObject(WindowData*, void**, unsigned char) + 772 28 HIToolbox 0x7ff80b551c2f FlushAllBuffers(__CFRunLoopObserver*, unsigned long, void*) + 317 29 CoreFoundation 0x7ff8024c6f98 __CFRUNLOOP_IS_CALLING_OUT_TO_AN_OBSERVER_CALLBACK_FUNCTION__ + 23 30 CoreFoundation 0x7ff8024c6e34 __CFRunLoopDoObservers + 543 31 CoreFoundation 0x7ff8024c5830 CFRunLoopRunSpecific + 446 32 HIToolbox 0x7ff80b5474f1 RunCurrentEventLoopInMode + 292 33 HIToolbox 0x7ff80b547118 ReceiveNextEventCommon + 284 34 HIToolbox 0x7ff80b546fe5 _BlockUntilNextEventMatchingListInModeWithFilter + 70 35 AppKit 0x7ff804e1bb4c _DPSNextEvent + 886 36 AppKit 0x7ff804e1a1b8 -[NSApplication(NSEvent) _nextEventMatchingEventMask:untilDate:inMode:dequeue:] + 1411 37 AppKit 0x7ff804e0c5a9 -[NSApplication run] + 586 38 libqcocoa.dylib 0x11402762f QCocoaEventDispatcher::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) + 2495 39 QtCore 0x11ace2acf QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) + 431 40 QtCore 0x11ace7042 QCoreApplication::exec() + 130 Anyone knows why it happens and how to fix it?

SayI have a function that will receive a UIImage as an argument, perform the logic inside it and then return it updated So I came up with something like this: func processImage(image: UIImage?) -> UIImage? { if let image = image, let cgImage = image.cgImage { let width = cgImage.width let height = cgImage.height let colorSpace = CGColorSpaceCreateDeviceRGB() let bitmapInfo = CGBitmapInfo(rawValue: CGImageAlphaInfo.premultipliedLast.rawValue) if let context = CGContext(data: nil, width: width, height: height, bitsPerComponent: 8, bytesPerRow: 4 * width, space: colorSpace, bitmapInfo: bitmapInfo.rawValue) { context.draw(cgImage, in: CGRect(x: 0, y: 0, width: CGFloat(width), height: CGFloat(height))) if let data = context.data { let buffer = data.bindMemory(to: UInt8.self, capacity: width * height * 4) for i in 0..<(width * height) { let pixelIndex = i * 4 let red = buffer[pixelIndex] let green = buffer[pixelIndex + 1] let blue = buffer[pixelIndex + 2] if isSystemGrayPixel(red: red, green: green, blue: blue) { // Convert systemGray to systemPink buffer[pixelIndex] = 255 // R component buffer[pixelIndex + 1] = 182 // G component buffer[pixelIndex + 2] = 193 // B component } } if let modifiedCGImage = context.makeImage() { let processedImage = UIImage(cgImage: modifiedCGImage) return processedImage } } } } return image } insde it I have called a helper function that will conditionally check if it contains .systemGrey and if so than change it as I func isSystemGrayPixel(red: UInt8, green: UInt8, blue: UInt8) -> Bool { let systemGrayColor = UIColor.systemBlue let ciSystemGrayColor = CIColor(color: systemGrayColor) let tolerance: CGFloat = 10.0 / 255.0 let redDiff = abs(ciSystemGrayColor.red - CGFloat(red) / 255.0) let greenDiff = abs(ciSystemGrayColor.green - CGFloat(green) / 255.0) let blueDiff = abs(ciSystemGrayColor.blue - CGFloat(blue) / 255.0) return redDiff <= tolerance && greenDiff <= tolerance && blueDiff <= tolerance } When I try to save it into a saveCanvas I will show in the console that the entry is saved but when i try to retrieve it later I will get nil This is my saveCanvas to serve as a reference @objc func saveCanvas(_ sender: Any) { guard let canvas = Canvas(name: "", canvas: mainImageView, numOfPages: 0) else { return } var savedImageView2 = UIImageView() savedImageView2.image = mainImageView.image?.copy() as? UIImage let updatedImage = processImage(image: savedImageView2.image) canvas.canvas.image = updatedImage // array that stores UIimageView gobally defined canvasArray.append(canvas) if canvasArray.count > 0 { canvasArray.forEach{ canvas in print("\(canvas.canvas == savedImageView )") print("clicked button \( canvasArray) ") } } } I am expecting to retrieve each iteration of canvasArray when i call it later in another function(which worked fine before I created the processImage function) . Like I said the purpose of processImage is to check if my UIImage contains .systemGrey and i so returned updated as I defined inside my isSystemGrayPixel function. Is there anything you might consider I do different rather do in my processImage to make it work as expected?

CGImageRef __nullable CGImageCreate(size_t width, size_t height, size_t bitsPerComponent, size_t bitsPerPixel, size_t bytesPerRow, CGColorSpaceRef cg_nullable space, CGBitmapInfo bitmapInfo, CGDataProviderRef cg_nullable provider, const CGFloat * __nullable decode, bool shouldInterpolate, CGColorRenderingIntent intent) function returns null when kCGImageAlphaNone is passed for bitmap info with error message "verify_image_parameters: invalid image alphaInfo: kCGImageAlphaNone. It should be kCGImageAlphaNoneSkipLast" This issue happens only when installing on iOS 17 from XCode 15(Swift 5). Is it possible to fix this problem without having change the bitmap info as that can affect other parts of image processing.

I want to read metadata of image files such as copyright, author etc. I did a web search and the closest thing is CGImageSourceCopyPropertiesAtIndex: - (void)tableViewSelectionDidChange:(NSNotification *)notif { NSDictionary* metadata = [[NSDictionary alloc] init]; //get selected item NSString* rowData = [fileList objectAtIndex:[tblFileList selectedRow]]; //set path to file selected NSString* filePath = [NSString stringWithFormat:@"%@/%@", objPath, rowData]; //declare a file manager NSFileManager* fileManager = [[NSFileManager alloc] init]; //check to see if the file exists if ([fileManager fileExistsAtPath:filePath] == YES) { //escape all the garbage in the string NSString *percentEscapedString = (NSString *)CFURLCreateStringByAddingPercentEscapes(NULL, (CFStringRef)filePath, NULL, NULL, kCFStringEncodingUTF8); //convert path to NSURL NSURL* filePathURL = [[NSURL alloc] initFileURLWithPath:percentEscapedString]; NSError* error; NSLog(@"%@", [filePathURL checkResourceIsReachableAndReturnError:error]); //declare a cg source reference CGImageSourceRef sourceRef; //set the cg source references to the image by passign its url path sourceRef = CGImageSourceCreateWithURL((CFURLRef)filePathURL, NULL); //set a dictionary with the image metadata from the source reference metadata = (NSDictionary *)CGImageSourceCopyPropertiesAtIndex(sourceRef,0,NULL); NSLog(@"%@", metadata); [filePathURL release]; } else { [self showAlert:@"I cannot find this file."]; } [fileManager release]; } Is there any better or easy approach than this?

I am trying to generate a PDF file with certain components draw with Spot Colours. Spot colours are used for printing and I am not clear on how one would do that but I think that if I can create a custom ColorSpace with a specific name or a color that has a specific name - our printer looks for the name Spot1 and they use the colour green. Can anyone shed any light on how I might be able to do this. For reference I have attached two pdf files with two different spot colours in them. I need to be able to create similar using CGContext and CGPDFDocument. I can already generate the PDF documents using CMYK colors but don't know how I can create the equivalent "spot" colors. At the moment I am loading the page from these attached pdf files and scaling them to fill the page to get a background with the spot color. This works fine but I also need to generate text and lines using this same spot color and I am not clear how I could do that using the Core Graphics APIs. My guess is I need to create a custom ColorSpace with a single color and then use that color for drawing with. The only 'custom' option for creating a ColorSpace seems to be the CGColorSpace(propertyListPList:) constructor, however there does not appear to be any documentation on what needs to be in the property list to do so. Nor can I find any examples of that. Any pointers would be appreciated. Regards

I am trying to create a custom CGColorSpace in Swift on macOS but am not sure I really understand the concepts. I want to use a custom color space called Spot1 and if I extract the spot color from a PDF I get the following: "ColorSpace<Dictionary>" = { "Cs2<Array>" = ( Separation, Spot1, DeviceCMYK, { "BitsPerSample<Integer>" = 8; "Domain<Array>" = ( 0, 1 ); "Filter<Name>" = FlateDecode; "FunctionType<Integer>" = 0; "Length<Integer>" = 526; "Range<Array>" = ( 0, 1, 0, 1, 0, 1, 0, 1 ); "Size<Array>" = ( 1024 ); } ); }; How can I create this same color space using the CGColorSpace(propertyListPlist: CFPropertyList) API func createSpot1() -> CGColorSpace? { let dict0 : NSDictionary = [ "BitsPerSample": 8, "Domain" : [0,1], "Filter" : "FlateDecode", "FunctionType" : 0, "Length" : 526, "Range" : [0,1,0,1,0,1,0,1], "Size" : [1024]] let dict : NSDictionary = [ "Cs2" : ["Separation","Spot1", "DeviceCMYK", dict0] ] let space = CGColorSpace(propertyListPlist: dict as CFPropertyList) if space == nil { DebugLog("Spot1 color space is nil!") } return space }

Yesterday, my code ran just fine under the previous Xcode version. Today, some print() statements seem to come with extra lines. I know it sounds stupid, but my code did not change in the meantime. It doesn't appear to come from anything I control, almost like some Apple code emits an extra line feed somewhere. It's just a Swift Mac App I built to make my digital art; otherwise, nothing else is incorrect, just these odd lines. It's not as simple as just making a test case with a few print("***") statements, it seems to require other code to run in between calls to print. Most of my app is using CoreGraphics. It has no UI. It's like when you see spurious Apple debugging info in the console sometimes, but it's only a blank line this time. It's not a big issue, just annoying.

When zoom in, CATiledLayer works very well. It shows previous layer while rendering next layer. I cannot aware the rendering. When zoom out, it sucks. It leaves blank when rendering smaller scale layer. How can I solve this??? For example, when downscale, put the draw rect into main thread?

Hey Guys, I am writing a little Swift apllication, which runs on my Mac, that is connected to the TV. To control the mouse I use my own SmartHome-App. In this app I have implemented a touchpad like from the MacBook. If the user triggers a tap/drag event, a UDP message will be sent to the mentioned application (MouseServer). The MouseServer is listening for UDP messages and moves the mouse, when the command for mouse move was recieved. Everything is working very well. But with the following mouse move code, I can't open the apple menu bar on top of the screen if I move the mouse to the top (when for example the browser is in fullscreen mode). I hope you know what I mean. If you are in a fullscreen window, the top menu bar within the apple icon disappears. But when you move the cursor to the top, the menu bar appears again. This doesn't work with my code. I've tried many different approches, but can't get it to work. Do you have any Idea? func moveMouse(x: Int, y: Int) { // show cursor NSCursor.setHiddenUntilMouseMoves(false) NSCursor.unhide() // generate the CGPoint object for click event lastPoint = CGPoint(x: x, y: y) print("X: \(x), Y: \(y)") // --- Variant 1 --- // move the cursor to desired position CGDisplayMoveCursorToPoint(CGMainDisplayID(), lastPoint) CGDisplayShowCursor(CGMainDisplayID()) // --- Variant 2 --- //if let eventSource = CGEventSource(stateID: .hidSystemState) { // let mouseEvent = CGEvent(mouseEventSource: eventSource, mouseType: .mouseMoved, mouseCursorPosition: lastPoint, mouseButton: .left) // mouseEvent?.post(tap: .cghidEventTap) //} // --- Variant 3 --- //moveMouseWithAppleScript(x: x, y: y) } func moveMouseWithAppleScript(x: Int, y: Int) { let script = """ tell application "System Events" set mousePos to {\(x), \(y)} do shell script "caffeinate -u -t 0.1" do shell script "osascript -e \\"tell application \\\\\\"System Events\\\\\\" set position of mousePos to {item 1 of mousePos, item 2 of mousePos} end tell\\"" end tell """ let appleScript = NSAppleScript(source: script) var error: NSDictionary? appleScript?.executeAndReturnError(&amp;error) if let error = error { print("Error executing AppleScript: \(error)") } } Best regards, Robin11

The error is: "Error Domain=MTLLibraryErrorDomain Code=3 ":1:10: fatal error: cannot open file './metal_types': Operation not permitted #include "metal_types"" On my Mac mini (with intel chip), I run flutter application in VScode lldb debugger and got this error, flutter application cannot draw its UI and shows a blank white window. My Xcode version is latest version 15.2. Flutter application can run normally in Mac mini M1 in VSCode lldb debugger, and can run normally without debugger in Mac mini Intel chip. In Metal framework and Core Graphic framework location, there is no file named "metal_types". Before, it didn't happen. I could run normal in vscode lldb debugger on Mac mini intel chip and M1. Anyone knows anythings, please comments. Thank you!