August 2015
Intermediate to advanced
246 pages
4h 21m
English
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Creating widgets
Actually, this topic has been almost covered in the last chapters, but now we can give graphics to our widgets. The following recipe will create a widget where the user can create graphics ad lib. When the user performs a touch in the widget, the app will draw a yellow point, and if he maintains the touch and moves it, the app will draw a yellow path for the movement.
Getting ready
We are going to work with the touch directive in this recipe. It is useful to read Differencing between Touch and Motion events recipe in Chapter 2, Input, Motion, and Touch.
How to do it…
We are going to use just one Python file to complete the task where we will define the method of our created widget. Follow these steps of the recipe:
- Import the usual ...
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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.