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

Binding data to widgets

When we explored widgets in Chapter 5, Widget Library and Themes, we saw how information can be gathered and presented. Each widget we looked at was configured manually, and accessing data that the user entered (such as with the Entry widget) required code to query the widget's state. The fyne.io/fyne/v2/data/binding package provides functionality that supports automatically connecting widgets to data sources to handle this more efficiently.

In the following sections, we will explore what data binding is, why it is so useful, and how it is designed within the Fyne APIs.

Understanding data binding

There are many different approaches to data binding, and definitions can vary, depending on the toolkit that you are working with. In general, data binding allows the component of a graphical interface to have its display controlled by a separate data source. Moreover, it ensures that the graphical representation is always up to date with changes, and...