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<== Date ==> <== Thread ==>
Subject: Re: CSS Phoebus spinner step size
From: "Kasemir, Kay via Tech-talk" <tech-talk at aps.anl.gov>
To: "tech-talk at aps.anl.gov" <tech-talk at aps.anl.gov>, "Pietryla, Anthony F." <afp at anl.gov>
Date: Fri, 21 Aug 2020 18:08:09 +0000
> How can I adjust the step size of a spinner widget in Phoebus without editing the display?

If you want to provide users with a way to adjust the "increment" property of a spinner in a display, you can add for example a text field adjacent to the spinner, connect it to a PV "loc://incr(1)", and then have a rule on the spinner that updates its "increment" property from that PV:
Add rule to spinner, trigger PV "loc://incr(1)", check "Value as _expression_", with just one _expression_ with boolean "true" and value "pv0".

Instead of a local PV for an increment that's per-display you could also use a global PV if all users of that spinner should use the same increment.
Instead of putting the increment PV on the display, you could also have a rule that computes the increment from for example the current value, i.e. the increment changes automatically based on the value.

-Kay

References:
CSS Phoebus spinner step size Pietryla, Anthony F. via Tech-talk
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