July 2016
Intermediate to advanced
300 pages
6h 24m
English
Content preview from Qt5 C++ GUI Programming CookbookBecome an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
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Chapter 3. QPainter and 2D Graphics
In this chapter, we will cover the following recipes:
- Drawing basic shapes on screen
- Exporting shapes to an SVG file
- Coordinate transformation
- Displaying images on screen
- Applying image effects to graphics
- Creating a basic paint program
- 2D Canvas in QML
Introduction
In this chapter, we will learn how to render 2D graphics on screen with Qt. Internally, Qt uses a low-level class called QPainter to render its widgets on the main window. Qt allows us to access and use the QPainter class for drawing vector graphics, text, 2D images, and even 3D graphics. You can make use of the QPainter class to create your own custom widgets or to create programs that rely heavily on computer graphics rendering such as video games, photo ...
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O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.Julian F.
I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
I’ve been on the O’Reilly platform for more than eight years. I use a couple of learning platforms, but I'm on O'Reilly more than anybody else. When you're there, you start learning. I'm never disappointed.Amir M.
I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.