Book Image

Building Cross-Platform GUI Applications with Fyne

By : Andrew Williams
5 (1)
Book Image

Building Cross-Platform GUI Applications with Fyne

5 (1)
By: Andrew Williams

Overview of this book

The history of graphical application development is long and complicated, with various development challenges that persist to this day. The mix of technologies involved and the need to use different programming languages led to a very steep learning curve for developers looking to build applications across multiple platforms. In Building Cross-Platform GUI Applications with Fyne, you'll understand how the Go language, when paired with a modern graphical toolkit such as Fyne, can overcome these issues and make application development much easier. To provide an easy-to-use framework for cross-platform app development, the Fyne project offers many graphical concepts and design principles that are outlined throughout this book. By working through five example projects, you'll learn how to build apps effectively, focusing on each of the main areas, including the canvas, layouts, file handling, widgets, data binding, and themes. The book will also show you how the completed applications can then be run on your desktop computer, laptop, and smartphone. After completing these projects, you will discover how to prepare applications for release and distribute them to platform marketplaces and app stores. By the end of this book, you'll be able to create cross-platform graphical applications with visually appealing user interfaces and concise code.
Table of Contents (18 chapters)
1
Section 1: Why Fyne? The Reason for Being and a Vision of the Future
4
Section 2: Components of a Fyne App
10
Section 3: Packaging and Distribution

Standard layouts

As there are many standard layout algorithms, the Fyne toolkit includes a collection of standard implementations in the layout package. By importing this package, you can apply these layouts to any Container in your application:

import "fyne.io/fyne/v2/layout"

Each of the layouts is examined in detail in this section. Although a container can only have a single layout, there is no limit to the number of containers you can have nested inside each other, and so we look at combining different layouts at the end of this section.

MaxLayout

MaxLayout (or maximum layout) is the simplest of all the built-in layout algorithms. Its purpose is to ensure that all child elements of a container take up the full space of that container:

Figure 4.2 – MaxLayout in a container

This is most commonly used to align one element over another, such as a text item over a background color rectangle. When using this layout, it is important...