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Use this code: (code incomplete, but you get the idea what needs to be done)


// TODO: Stop calling this once 10.15.1 is out!
#if TARGET_OS_UIKITFORMAC
static void PSPDFFixVisualEffectsEnvironment(void) {
    static const char *PSPDFVisualEffectsWindowKey;
    static const char *PSPDFVisualEffectsSuperviewKey;
    let klass = NSClassFromString([NSString stringWithFormat:@"_%@sualEffe%@ironment", @"UIVi", @"ctEnv"]);

steipete

Here's what needs to be done in order to use security scoped bookmarks on Mac Catalyst:

1. You need an entitlement: "com.apple.security.files.bookmarks.app-scope" needs to be se to 1.

2. Pass both NSURLBookmarkCreationWithSecurityScope and NSURLBookmarkCreationSecurityScopeAllowOnlyReadAccess when creating the bookmark.

Note: The headers mark these API as unavailable for iOS, and this indeed does only work on Mac and not iOS. However, Mac Catalyst really is a Mac app, so using these values is fine. In order to allow compilation, use following:

steipete

import UIKit

extension UIView {
  struct AnimationContext {
    public let duration: TimeInterval
    public let timingParameters: UITimingCurveProvider?
  }
}

extension UIView {

steipete

import UIKit

extension UIView {
  struct AnimationContext {
    public let duration: TimeInterval
    public let timingParameters: UITimingCurveProvider?
  }
}

extension UIView {

steipete

// http://defagos.github.io/yet_another_article_about_method_swizzling/ (Thank you!!)
// Returns the original implementation
static _Nullable IMP pspdf_swizzleSelector(Class clazz, SEL selector, IMP newImplementation) {
    NSCParameterAssert(clazz);
    NSCParameterAssert(selector);
    NSCParameterAssert(newImplementation);

    // If the method does not exist for this class, do nothing.
    const Method method = class_getInstanceMethod(clazz, selector);
    if (!method) {

steipete

/**
 HACK around FB6940492: Mac Catalyst: Crash when presenting view controllers

 'NSRangeException', reason: 'Cannot remove an observer <UINSSceneViewController 0x600003558790> for the key path "view.window.screen.contentLayoutRect" from <UINSSceneViewController 0x600003558790> because it is not registered as an observer.'

 0   CoreFoundation                      0x00007fff3b20f183 __exceptionPreprocess + 250
 1   libobjc.A.dylib                     0x00007fff71719b64 objc_exception_throw + 48
 2   Foundation                          0x00007fff3d8ca2aa -[NSObject(NSKeyValueObserverRegistration) _removeObserver:forProperty:] + 578
 3   Foundation                          0x00007fff3d8ca01b -[NSObject(NSKeyValueObserverRegistration) removeObserver:forKeyPath:] + 74
 4   Foundation                          0x00007fff3d8e2898 -[NSObject(NSKeyValueObserverRegistration) removeObserver:forKeyPath:context:] + 190

steipete

// Don't forget to prefix your category!

#import <UIKit/UIKit.h>

NS_ASSUME_NONNULL_BEGIN

@interface UIWindow (PSPDFAdditions)

#if TARGET_OS_UIKITFORMAC

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// AppDelegate.swift:

    // macCatalyst: Create menu
    override func buildMenu(with builder: UIMenuBuilder) {
        guard builder.system == .main else { return }
        
        // The format menu doesn't make sense
        builder.remove(menu: .format)
        
        // Add Open command

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static _Atomic(BOOL) _applicationWillTerminate = NO;
__attribute__((constructor)) static void PSPDFInstallAppWillTerminateHandler(void) {
    static dispatch_once_t onceToken;
    dispatch_once(&onceToken, ^{
        [NSNotificationCenter.defaultCenter addObserverForName:UIApplicationWillTerminateNotification object:nil queue:nil usingBlock:^(NSNotification *note) {
            _applicationWillTerminate = YES;
            PSPDFLogWarning(@"Application shutdown event detected.");
        }];
    });
}

steipete

extension UndoManager {
    @objc func workaround_pspdf_endUndoGrouping() {
        guard self.groupingLevel > 0 else { return }
        self.workaround_pspdf_endUndoGrouping()
    }

    // Ensure this is only called once!
    fileprivate static func InstallWorkaroundForRdar46395110() {
        let originalSelector = #selector(UndoManager.endUndoGrouping)
        let swizzledSelector = #selector(UndoManager.workaround_pspdf_endUndoGrouping)