Comment 0 for bug 1444121

This is a request to extend the existing <SliderComposed> widget functionality to allow for sequential <Slider> background images, like we have it in the <Knob> widget.

This would combine the best from both worlds. <Slidercomposed> works horizontal or vertical and allows scaling [1], while <Knob> can load sequential images.

Usage
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* A progress bar slider can improve visibility by a factor. Currently it is hard to see the actual position of the line/crossfader handle at a glance.
* A progress bar slider can also replace a rotary knob, if necessary.

Example (crossfader)
----------------------------
old: ---|-----------------
new: ---|=======----------

Demo
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http://bootstrapmaster.com/live/simpliq2/ui-sliders-progress.html

[1] https://github.com/mixxxdj/mixxx/pull/426