Jan 10 2017
OSX 10.12, Xcode 8.0 I’m not entirely certain under which circumstances this is useful, but [code language=”plain”]class invisibleWindowController: NSWindowController { override func windowDidLoad() { super.windowDidLoad() self.window?.isOpaque = false self.window?.backgroundColor = NSColor.clear } }[/code] is a thing of beauty. If the view in the window’s contentViewController overrides override func draw(_ dirtyRect: NSRect), the effect is […]
Jan 8 2017
Credit for extending Selector goes entirely to Andyy Hope (@AndyyHope) who posted this article on Medium: He looks at the problem of Swift selector syntax being somewhat unwieldy, and turns it into [code language=”plain”]fileprivate extension Selector { static let buttonTapped = #selector(ViewController.buttonTapped(_:)) }[/code] Thanks to fileprivate, you don’t get namespacing conflicts. Awesome. So I […]
Jan 5 2017
In the zoom example app, to make life easier for me, I went for a cyclical zoom: 2x magnification, 3x magnification, 1x magnification. When Apple first announced Swift, I liked many things about it, but the thing that made me swoon was enums. Swift enums are wonderful tools to shape your application flow. Here, we […]
Jan 4 2017
Xcode 8.0, macOS 10.11 (This is Part 1 of 3; in which we will create an NSOutlineView with a flexible data structure that can be used for simple trees and for structures like the one below which contain a number of different, unrelated items. Part 2 will deal with inserting and deleting items, and reacting […]
Jan 4 2017
(OSX 10.11, Xcode 8) Create a new app: drop an NSImageView and two buttons into the storyboard, set up an outlet for the image view and two actions – zoomIn and zoomOut for the buttons. 0) Not recommended: scaleUnitSquare @IBAction func zoomOut(_ sender: AnyObject) { imageView.scaleUnitSquare(to: NSSize(width: 0.4, height: 0.4)) } This works perfectly fine. […]
Jan 3 2017
(Xcode 8.0, OSX 10.11) For the app I am currently working on, I wanted to implement the following: – user can import a picture – user can change their mind and undo their choice, up to a point – I don’t need to store a million images in my app And there are many ways […]
Jan 2 2017
This image captures my experience with a lot of tutorials: they don’t tell you *how* to get from A to B, and if you don’t already have a good idea of what you’re trying to achieve (because you can program and just need to learn a new language/IDE/framework) chances are you’ll fail to learn unless […]
Jan 2 2017
By mere chance I’ve come across the following list of Objective C tutorials on YouTube. (The author also has a couple of introductory Swift tutorials and seems to be continuing his tutorials in Swift, though they have not been updated recently, as far as I can see. He has, as far as I can see, […]
Jan 1 2017
Xcode 8.0, Swift 3, OSX 10.11 The following is a good example of creating your own operators. In the two years since first writing this, I have not found an actual use for this, but it appears to be a common operator in Ruby, and has been implemented several times in Swift. My example code […]
Jan 10 2017
Blog Update: macOS Sierra
I have finally made the switch to using Sierra as my main OS, so from this point onwards, all code will be linked to the macOS 10.12 SDK. Of the three options – supporting legacy software, and risking that advice does not work on the current system, keeping two (or more) versions of code updated […]
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