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Game Programming Using Qt Beginner's Guide

You're reading from   Game Programming Using Qt Beginner's Guide A complete guide to designing and building fun games with Qt and Qt Quick 2 using associated toolsets

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Product type Paperback
Published in Jan 2016
Publisher
ISBN-13 9781782168874
Length 512 pages
Edition 1st Edition
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Authors (2):
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Lorenz Haas Lorenz Haas
Author Profile Icon Lorenz Haas
Lorenz Haas
Witold Wysota Witold Wysota
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Witold Wysota
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Table of Contents (13) Chapters Close

Preface 1. Introduction to Qt FREE CHAPTER 2. Installation 3. Qt GUI Programming 4. Qt Core Essentials 5. Graphics with Qt 6. Graphics View 7. Networking 8. Scripting 9. Qt Quick Basics 10. Qt Quick A. Pop Quiz Answers Index

Raster painting


When we talk about GUI frameworks, raster painting is usually associated with drawing on widgets. However, since Qt is something more than a GUI toolkit, the scope of raster painting that it offers is much broader.

In general, Qt's drawing architecture consists of three parts. The most important part is the device the drawing takes place on, represented by the QPaintDevice class. Qt provides a number of paint device subclasses such as QWidget or QImage and QPrinter or QPdfWriter. You can see that the approach for drawing on a widget and printing on a printer will be quite the same. The difference is in the second component of the architecture—the paint engine (QPaintEngine). The engine is responsible for performing the actual paint operations on a particular paint device. Different paint engines are used to draw on images and to print on printers. This is completely hidden from you as a developer, so you really don't need to worry about it.

For you, the most important piece...

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