Book Image

Delphi GUI Programming with FireMonkey

By : Andrea Magni
4 (1)
Book Image

Delphi GUI Programming with FireMonkey

4 (1)
By: Andrea Magni

Overview of this book

FireMonkey (FMX) is a cross-platform application framework that allows developers to create exciting user interfaces and deliver applications on multiple operating systems (OS). This book will help you learn visual programming with Delphi and FMX. Starting with an overview of the FMX framework, including a general discussion of the underlying philosophy and approach, you’ll then move on to the fundamentals and architectural details of FMX. You’ll also cover a significant comparison between Delphi and the Visual Component Library (VCL). Next, you’ll focus on the main FMX components, data access/data binding, and style concepts, in addition to understanding how to deliver visually responsive UIs. To address modern application development, the book takes you through topics such as animations and effects, and provides you with a general introduction to parallel programming, specifically targeting UI-related aspects, including application responsiveness. Later, you’ll explore the most important cross-platform services in the FMX framework, which are essential for delivering your application on multiple platforms while retaining the single codebase approach. Finally, you’ll learn about FMX’s built-in 3D functionalities. By the end of this book, you’ll be familiar with the FMX framework and be able to build effective cross-platform apps.
Table of Contents (18 chapters)
Section 1: Delphi GUI Programming Frameworks
Section 2: The FMX Framework in Depth
Section 3: Pushing to The Top: Advanced Topics


We've already learned how the TImage component can hold MultiResBitmap and show the most appropriate scale version according to the capabilities of the device running the application. The TGlyph component pushes this concept further and allows you to show the best version of your application. It does this by considering not only the screen density of the device but also the size of the desired image, as shown in the following screenshot:

Figure 3.21

The preceding screenshot shows that if you have an image list (ImageList1), it provides an entry with a default size of 256 x 256 and bitmaps for scale factors 0.25 (64 x 64), 0.5 (128 x 128), 1.0 (256 x 256), 2.0 (512 x 512), and 4.22 (1080 x 1080)..

Once you've done this, you can add a TGlyph component. Note that it implements the IGlyph interface (defined in the FMX.ActnList unit), which basically consists of a couple of properties (Images and ImageIndex), and the ImagesChanged method (this should...