August 2015
Intermediate to advanced
246 pages
4h 21m
English
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Declaring a property
This recipe will work with the last type of events, which is the property event. To be very specific, we will create an invisible widget that will fire an event when a selected property is changed. Just to identify of this invisible widget, we surround it with two normal buttons; thus, the section between them is our invisible widget.
Getting ready
The properties in Kivy have been reviewed in Chapter 1, Kivy and the Kv language, specifically with in the Declaring properties within a class recipe. Thus, it will be useful to refer to this recipe and also to the section on multitouching from Chapter 2, Input, Motion, and Touch.
How to do it…
The recipe is:
- First, import the
ListPropertyfrom Kivy properties. - Create the class for the ...
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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.