Touchscreen audio controller for presentation sound
The stop Function
The stop function (lines 52-56) uses the opposite logic from play above, but otherwise they are identical. Line 53 calls self.track.fadeout, which will fade the track over the provided number of milliseconds and then stop – 1000 in this case.
The controls Function
The controls function (lines 58-75) creates the volume buttons used for background sounds. Much of it is code you've seen before. Line 59 creates a list for the buttons to be stored in. Then, lines 61-64 create the "Volume Up" button. It's the same code as the play button above, just with a different label. Lines 67-70 are also the same.
Lines 65 and 71 add a tuple to self.buttons. The first part is the surface of the button itself. The second part is the caption, or a unique identifier indicating which sound this button belongs to. The last part is a string that says which command this button is associated with. Line 73 calls self.drawPlayButton, so calling self.controls will regenerate all of the buttons. Finally, line 75 returns the list of buttons.
Buy this article as PDF
Pages: 2
(incl. VAT)
Buy Raspberry Pi Geek
US / Canada
UK / Australia
Related content
-
Pygame modules for interactive programs
Pygame modules are particularly suited to programming highly interactive software. We look at the modules dedicated to events, sound, and input by keyboard, mouse, and game controller.
-
Graphical displays with Python and Pygame
As its name implies, Pygame is a set of Python modules designed to write games. However, many Pygame modules are useful for any number of projects. We introduce you to a few Pygame modules that you can use to create custom graphical displays for your project.
-
Build a complete game with Python and PyGame
We show how to use PyGame to implement a fully playable version of the classic "robots" game.
-
Using a temperature and humidity sensor to monitor a terrarium
An Arduino sensor, a Raspberry Pi, and a Python program help a budding naturalist keep tabs on the conditions in his snake's terrarium.
-
A Python interface to a large-format pen plotter
Getting a large-format plotter operational presented a personal challenge. A Raspberry Pi with a USB-to-serial dongle was the easiest way to start plotting on my home network.
