pyohio-kivy-tutorial | A Kivy tutorial for PyOhio | Android library
kandi X-RAY | pyohio-kivy-tutorial Summary
kandi X-RAY | pyohio-kivy-tutorial Summary
A cross-platform Kivy GUI for TTS.
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Top functions reviewed by kandi - BETA
- Displays a notification
- Returns the notification service
- Called when an activity is finished
- Unlink the given file
- Returns the current acceleration
- Get the current acceleration
- Determine the platform
- Take a picture
- Send a notification to the user
- Speak the message
- Disable the motor
- Enable the device
pyohio-kivy-tutorial Key Features
pyohio-kivy-tutorial Examples and Code Snippets
Community Discussions
Trending Discussions on pyohio-kivy-tutorial
QUESTION
I'd like to control a simple Ellipse widget created in Kivy using KV Language. I have been working on this for days having read and worked through the exercises in the book Kivy: Interactive Applications in Python by Roberto Ulloa and Ben Rousch's online workshop at https://bradfortner.wordpress.com/2017/07/19/good-kivy-tutorial/.
While the examples provided in those tutorials seem to work fine on pre-defined Kivy widgets (ie. Buttons and Labels) I'm having trouble controlling Widgets that I define such as a circular ellipse as shown in the code below.
In the code (below) I create the circular ellipse class Widget (named Ball) on lines 10 and 45. I place the Ball Widget on my layout (line 29) and then id the Widget as my_circle (line 30). Finally I provide the code to link the widget to Python (line 26) so Python code can control the Widget.
However when I press the "Shrink Circle" button and the shrink_circle() function is called there is no effect on the widget. Any idea where the code goes wrong? I'd love to know because it's become quite the mystery to me and I cant find anything simple that explains what I need to do to correct this.
Full code below.
Appreciated in advance.
....brad....
...ANSWER
Answered 2017-Jul-20 at 16:39Remember that kivy canvas
is not a widget and it isn't the space in which you paint, it is just a set of instructions to draw. Ball
should be a widget.
On the other hand, the size
property is ignored if size_hint
property is not disabled.
Simplified example:
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Install pyohio-kivy-tutorial
You can use pyohio-kivy-tutorial like any standard Python library. You will need to make sure that you have a development environment consisting of a Python distribution including header files, a compiler, pip, and git installed. Make sure that your pip, setuptools, and wheel are up to date. When using pip it is generally recommended to install packages in a virtual environment to avoid changes to the system.
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