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

Learning about the MultiResBitmaps unit

For decades, the computer graphics world has strived to find a way to have graphic resources (images) in a proper format so that they can scale on different resolutions or screen densities without impacting the resource space/memory side too much.

Today, since this scenario is evolving faster and quickly adding diversity (and thus, complexity), we cannot rely on the old-fashioned idea of a single bitmap that fits all situations. Today's graphic resources need to be provided in different versions so that they're used according to the real capabilities of the target device running the application. This is the reason the FMX.MultiResBitmap unit exists.

The basic idea is to provide a collection of different versions of the image, each suited to a different scale (or pixel density, as you may prefer to call it), as opposed to there being a single version. Having an automatic mechanism to deal with dynamically selecting the best option...