[Traverso-devel] New Widget: "Audio Fader" for Traverso ( Custom Slider )

[石任之]

Hello everyone :D

Before working on "Audio Import Option", I made a more functional Slider compare to the default one.
It can be inserted into trackManger, Mixer Strip, and all the places that need a "Audio Fader".

I make a video to provide a glance on functionality of the Audio Fader:

https://youtu.be/rP1NrCayLgs

The implementation is simple, just inherit from QSlider, draw a fader cap picture, groove and scale, then using serveral condition sentence and varibale to control the widget's behavior.

Any suggestion? Thanks.