Book Image

Mastering macOS Programming.

By : Gregory Casamento
Book Image

Mastering macOS Programming.

By: Gregory Casamento

Overview of this book

macOS continues to lead the way in desktop operating systems, with its tight integration across the Apple ecosystem of platforms and devices. With this book, you will get an in-depth knowledge of working on macOS, enabling you to unleash the full potential of the latest version using Swift 3 to build applications. This book will help you broaden your horizons by taking your programming skills to next level. The initial chapters will show you all about the environment that surrounds a developer at the start of a project. It introduces you to the new features that Swift 3 and Xcode 8 offers and also covers the common design patterns that you need to know for planning anything more than trivial projects. You will then learn the advanced Swift programming concepts, including memory management, generics, protocol orientated and functional programming and with this knowledge you will be able to tackle the next several chapters that deal with Apple’s own Cocoa frameworks. It also covers AppKit, Foundation, and Core Data in detail which is a part of the Cocoa umbrella framework. The rest of the book will cover the challenges posed by asynchronous programming, error handling, debugging, and many other areas that are an indispensable part of producing software in a professional environment. By the end of this book, you will be well acquainted with Swift, Cocoa, and AppKit, as well as a plethora of other essential tools, and you will be ready to tackle much more complex and advanced software projects.
Table of Contents (28 chapters)
Title Page
About the Author
About the Reviewer
Customer Feedback
LLDB and the Command Line

Animating CALayer objects

As we noted at the beginning of this chapter, the great thing about using CALayer and its subclasses is that most of the properties are pre-configured for animation. How simple or how complex those animations are is entirely up to us, but it makes the implementation very easy.

In this section, we will start with some one-liner animation code and work our way up to some pretty intense 3D animations that will consist of a page of code each. But by using CALayer objects to compose our slightly sci-fi inspired UI, we have completed much of the work that is needed to get Core Animation to do what it says on the box, namely animation.

CA implicit animations

Core Animation provides us with default animation of many of its property changes, which requires no extra code at all. Let's see this in action.

Add the following method to the ViewController class:

func moveShapeLayer() 
  shapeLayer.position = CGPoint( 
            x: customView.bounds.width * 0.5,