[Feature Request] - Add numbers to Tool Options sliders for Freehand Drawing about mypaint

[tedil]

I find the Gimp controls hard to use, because other than the cursor
changing in the middle there's no indication you're changing the
control's value absolutely or relatively. If we choose to use such a
control, we should at least e.g. draw a horizontal line (in the middle)
to make it more obvious where you have to click/drag. We also have to
consider that those controls are tall enough (vertically) (especially on
devices with small screens or very high resolutions) otherwise it's hard
to click in the correct area.

[iirelu]

My favourite slider implementation is Blender's.

Dragging moves it, holding shift while dragging moves it but a lot slower, and clicking lets you type in something new.

[achadwick]

Widgets in the main UI cannot be given keyboard focus in the regular way because that would stuff up being able to bring up the palette or the brush selector with a single key. In fact, they should really be written to reject keyboard focus.... though I guess we could turn off the app-wide keyboard handling shim between clicking on one of these things and pressing escape/tab/enter or clicking away.

Text in the bar looks nice. It's worth noting that boring GtkEntry widgets have optional progress bars and icons, and they're pretty good at showing and entering text too.

I kinda want a drop-down/pop-up thingy showing the effect of changes made in the bar, ideally at the current document scale if it can be shown. S- or Z-curves to show the effect of smoothing ("slow position tracking"), maybe. Mock-ups welcome!

[iirelu]

Making sure keyboard input is handled correctly is something that should be done anyway.

[Deevad]

@tedil Yes, I also find issue with Gimp widget, especially this top/bottom split to change the sensitivity.

@iirelu Blender one are good indeed. With my example about Gimp I was trying to find a widget existing in a gtk app.

@achadwick Yes, it's more about having a feedback than knowing the exact value.

[odysseywestra]

Luckily with the new sliders you can use shift to fine tune the value, but yes number values
should added wither it's a tooltip or physical numbers on the tool box.

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Tiage Note: Adding to 2.0 milestone, if we can't do it in time. I'll move it to the 2.1.x milestone.

[odysseywestra]

@Deevad Could you move this thread over to https://community.mypaint.org/c/feature-requests? I'm working on cleaning up the issue tracker by move all feature requests there so we can get community feedback. If you can also set your post as a wiki that way we can edit the scope of the feature request that would be awesome as well. Don't forget to link back to here as well so I can keep track of it incase we need to reopen the issue.

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I know you stated in #12 that you won't be able to till January.

[jplloyd]

Dynamic tooltips showing the setting values are enabled for these sliders here 0c722d2

Additionally, these commits enable keyboard input for sliders by double clicking on them: 6a2f91a & 31a072a which will show the current value in an input box.

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A thing to consider here (which was also raised in a related issue) is that even though this provides a numeric reference, the numbers themselves are not very straightforward, since they map directly to brush settings.

Without knowing the mappings of these values to the units they relate to, it may just be more confusing than not having any values. For example, if you don't know about logarithms, you will probably be perplexed about seeing the range for Size be -2 to 6, and unless you are very familiar with how the brush engine works, the Opacity going from 0 to 2 will be a bit surprising as well.

Those things should be dealt with in a separate issue.