You're reading from Qt5 C++ GUI Programming Cookbook Design and build a functional, appealing, and user-friendly graphical user interface

Product type Paperback

Published in Jul 2016

Publisher Packt

ISBN-13 9781783280278

Length 300 pages

Edition 1st Edition

Languages

C++

Tools

Concepts

GUI Application Development

Author (1):

Lee Zhi Eng

View More author details

Table of Contents (11) Chapters

Preface

1. Look and Feel Customization

2. States and Animations FREE CHAPTER

3. QPainter and 2D Graphics

4. OpenGL Implementation

5. Building a Touch Screen Application with Qt5

6. XML Parsing Made Easy

7. Conversion Library

8. Accessing Databases

9. Developing a Web Application Using Qt Web Engine

Index

Using easing curves to control property animation

In this example, we will learn how to make our animation more interesting by utilizing easing curves. We will still use the previous source code, which uses the property animation to animate a push button.

How to do it…

Define an easing curve and add it to the property animation before calling the start() function:

QPropertyAnimation *animation = new QPropertyAnimation(ui->pushButton, "geometry");
animation->setDuration(3000);
animation->setStartValue(ui->pushButton->geometry());
animation->setEndValue(QRect(200, 200, 100, 50));
QEasingCurve curve;
curve.setType(QEasingCurve::OutBounce);
animation->setEasingCurve(curve);
animation->start();

Call the setLoopCount() function to set how many loops you want it to repeat for:

QPropertyAnimation *animation = new QPropertyAnimation(ui->pushButton, "geometry");
animation->setDuration(3000);
animation->setStartValue(ui->pushButton->geometry...

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Qt5 C++ GUI Programming Cookbook

Published in: Jul 2016

Publisher: Packt

ISBN-13: 9781783280278

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Authors (1)

Lee Zhi Eng

Lee Zhi Eng is a self-taught programmer who worked as an artist and programmer at several game studios before becoming a part-time lecturer for 2 years at a university, teaching game development subjects related to Unity and Unreal Engine. He has not only taken part in various projects related to games, interactive apps, and virtual reality but has also participated in multiple projects that are more oriented toward software and system development. When he is not writing code, he enjoys traveling, photography, and exploring new technologies.

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