Add SliderView

[gyscos]

Either something like AlsaMixer, or one that looks like the current scrollbars.

[matthiasbeyer]

I like that idea! One should have the possibility to make it either horizontal or vertical. Also, one might want to open this in a sub window (I'm pretty sure I do not get the terminology right here, hope you understand anyways).

[gyscos]

Vertical/Horizontal layouts are planned. As for the new window, users can implement that if they want (have Enter add a new layer with a single slider, and retrieve the value when the dialog is closed).

[gyscos]

Added a basic version in ce6992a8c5589e82968bb3196ec7297f662be255, it uses the same visuals as the scrollbars (with - instead of | for horizontal sliders), only without the "lighter" color of the cursor. It is limited to one cell-increments (which means as many possible values as the size of the view). The user is responsible to scale it to his desired range.

Adding the option to decorrelate view size and value range would mean that a "move" (an arrow key press) no longer maps 1-1 for a visual movement of the cursor:

• For views larger than the range, it means each "tick" move multiple cells. It's acceptable, though unless the size is a multiple of the range, the jumps will be of different length. Could be weird.
• For views smaller than the range, it means some "ticks" have no visible effect (since the cursor does not move), which could be confusing. Linking the value to other views could alleviate this problem.

It is also currently limited to a 1x1 cursor (unlike scrollbars). I guess larger cursors might make sense for large views and small range (so that the successive positions appear to touch each other).

[gyscos]

Also, vertical sliders are top-to-bottom (like most other views). This mean the top value is actually the lowest (unlike the alsa mixer example in the first post). Again, it could be up to the user to do the translation...