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

Understanding themes

The themes within the Fyne toolkit implement the color palette, iconography, and size/padding values of the Material Design look and feel. The design of the theme API aims to ensure that applications feel consistent and deliver a good user experience while allowing developers to convey an identity and customization. All Fyne applications can be displayed in light or dark mode using built-in themes. We will look at these in detail next.

Built-in themes

Since more and more operating systems are supporting light versus dark desktop coloring, the Fyne theme specification supports both light and dark variants. By default, every app will ship with a built-in theme that provides both light and dark variants. This theme was illustrated extensively in the Introducing the basic widgets section earlier in this chapter, but to see how this all comes together, take a look at the following screenshot of a Fyne demo application that showcases widgets:

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