steipete
/ UIKitLegacyDetector.m
Last active
March 12, 2024 13:57
A simple way to detect at runtime if we're running in UIKit legacy mode or the new "flat" variant. Written for our PDF iOS SDK (http://pspdfkit.com), where the precompiled binary needs to detect at runtime in what variant it's running. Want more stuff like that? Follow me on Twitter: http://twitter.com/steipete
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| // Taken from http://PSPDFKit.com. This snippet is under public domain. | |
| #define UIKitVersionNumber_iOS_7_0 0xB57 | |
| BOOL PSPDFIsUIKitFlatMode(void) { | |
| static BOOL isUIKitFlatMode = NO; | |
| static dispatch_once_t onceToken; | |
| dispatch_once(&onceToken, ^{ | |
| // We get the modern UIKit if system is running >= iOS 7 and we were linked with >= SDK 7. | |
| if (kCFCoreFoundationVersionNumber >= kCFCoreFoundationVersionNumber_iOS_7_0) { | |
| isUIKitFlatMode = (NSVersionOfLinkTimeLibrary("UIKit") >> 16) >= UIKitVersionNumber_iOS_7_0; | |
| } |
steipete
/ PSPDFUIKitMainThreadGuard.m
Last active
May 27, 2024 12:11
This is a guard that tracks down UIKit access on threads other than main. This snippet is taken from the commercial iOS PDF framework http://pspdfkit.com, but relicensed under MIT. Works because a lot of calls internally call setNeedsDisplay or setNeedsLayout. Won't catch everything, but it's very lightweight and usually does the job.You might n…
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| // Taken from the commercial iOS PDF framework http://pspdfkit.com. | |
| // Copyright (c) 2014 Peter Steinberger, PSPDFKit GmbH. All rights reserved. | |
| // Licensed under MIT (http://opensource.org/licenses/MIT) | |
| // | |
| // You should only use this in debug builds. It doesn't use private API, but I wouldn't ship it. | |
| // PLEASE DUPE rdar://27192338 (https://openradar.appspot.com/27192338) if you would like to see this in UIKit. | |
| #import <objc/runtime.h> | |
| #import <objc/message.h> |
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| #!/usr/bin/python | |
| # fix-xcode | |
| # Rob Napier <[email protected]> | |
| # Script to link in all your old SDKs every time you upgrade Xcode | |
| # Create a directory called /SDKs (or modify source_path). | |
| # Under it, put all the platform directories: | |
| # MacOSX.platform iPhoneOS.platform iPhoneSimulator.platform | |
| # Under those, store the SDKs: |
lukeredpath
/ ExampleClass.m
Created
June 30, 2011 22:18
Macro for creating your "shared instance" using GCD
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| @implementation MySharedThing | |
| + (id)sharedInstance | |
| { | |
| DEFINE_SHARED_INSTANCE_USING_BLOCK(^{ | |
| return [[self alloc] init]; | |
| }); | |
| } | |
| @end |
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| /* | |
| * System Versioning Preprocessor Macros | |
| */ | |
| #define SYSTEM_VERSION_EQUAL_TO(v) ([[[UIDevice currentDevice] systemVersion] compare:v options:NSNumericSearch] == NSOrderedSame) | |
| #define SYSTEM_VERSION_GREATER_THAN(v) ([[[UIDevice currentDevice] systemVersion] compare:v options:NSNumericSearch] == NSOrderedDescending) | |
| #define SYSTEM_VERSION_GREATER_THAN_OR_EQUAL_TO(v) ([[[UIDevice currentDevice] systemVersion] compare:v options:NSNumericSearch] != NSOrderedAscending) | |
| #define SYSTEM_VERSION_LESS_THAN(v) ([[[UIDevice currentDevice] systemVersion] compare:v options:NSNumericSearch] == NSOrderedAscending) | |
| #define SYSTEM_VERSION_LESS_THAN_OR_EQUAL_TO(v) ([[[UIDevice currentDevice] systemVersion] compare:v options:NSNumericSearch] != NSOrderedDescending) |
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