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Kivy: Interactive Applications in Python

You're reading from  Kivy: Interactive Applications in Python

Product type Book
Published in Sep 2013
Publisher Packt
ISBN-13 9781783281596
Pages 138 pages
Edition 1st Edition
Languages
Concepts
Author (1):
Roberto Ulloa Roberto Ulloa
Profile icon Roberto Ulloa
LinkedIn
Roberto Ulloa has a diverse academic record in multiple disciplines within the field of computer science. Currently, he is working with artificial societies as part of his PhD thesis at the University of Western Ontario. He obtained an MSc degree from the University of Costa Rica and taught programming and computer networking there. He has earned a living as a web developer, working with Python/Django and PHP/Wordpress. He collaborates with various researchers while also working on his own projects, including his blog (http://robertour.com). He constantly worries that the Internet has already become aware of itself and that we are not able to communicate with it because of the improbability of it being able to speak any of the 6,000-plus odd human languages that exist on the planet.
See other products by Roberto Ulloa

Table of Contents (13) Chapters

Kivy: Interactive Applications in Python
Credits
About the Author
Acknowledgments
About the Reviewers
www.PacktPub.com
Preface
1. GUI Basics – Building an Interface 2. Graphics – The Canvas 3. Widget Events – Binding Actions 4. Improving the User Experience 5. Invaders Revenge – An Interactive Multitouch Game Index

Simple gestures – drawing with the finger

The previous section explained how to obtain string representation from gestures. The current section explains how to use those string representations to recognize the gestures. We have copied the strings that were generated by the strokes in the previous section into a new file called gestures.py. The strings are assigned to different variables. The following code corresponds to gestures.py:

202. # File Name: gestures.py
203. line45_str = 'eNq1VktuI0cM3fdFrM0I...
204. circle_str = 'eNq1WMtuGzkQvM+P2JcI/Sb5A9rrA...
205. cross_str = 'eNq1V9tuIzcMfZ8fSV5qiH...

Only the first few characters of the strings are shown in the previous code because of space concern, but you can use the previous section to generate your own strings.

Next, we are going to use this string in the drawingspace.py file. Let's start with its header first:

206. # File name: drawingspace.py
207. from kivy.uix.stencilview import StencilView
208. from kivy.gesture import Gesture, GestureDatabase...
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Authors (1)

Profile icon Roberto Ulloa
LinkedIn
Roberto Ulloa has a diverse academic record in multiple disciplines within the field of computer science. Currently, he is working with artificial societies as part of his PhD thesis at the University of Western Ontario. He obtained an MSc degree from the University of Costa Rica and taught programming and computer networking there. He has earned a living as a web developer, working with Python/Django and PHP/Wordpress. He collaborates with various researchers while also working on his own projects, including his blog (http://robertour.com). He constantly worries that the Internet has already become aware of itself and that we are not able to communicate with it because of the improbability of it being able to speak any of the 6,000-plus odd human languages that exist on the planet.
Read more
See other products by Roberto Ulloa

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