Aligning baseline of NS controls
Aligning baseline of NS controls
- Subject: Aligning baseline of NS controls
- From: Aandi Inston <email@hidden>
- Date: Thu, 10 Jul 2014 09:02:06 +0100
I am porting a library for dynamic dialog creation to Cocoa.
The implementation is using various standard controls such as
NSTextField and NSButton. I have a question.
Suppose a dialog is to contain a line with multiple controls like
[ ] Add ________ seconds [before/after]
Here
[ ] Add is a check box
_____ is an editable text field
seconds is a noneditable text field
[before/after] is a popup button
Each of these controls contains text, and the aim here is to align the text
so it does not jump up and down - to align the text baseline. If the top of
the controls, or the bottom of the controls, are aligned then the text
itself will not be aligned.
Two possibilities suggest themselves
- fixed constants, based on experiments (which will perhaps go awry if the
system configuration changes)
- work out the height of each of these controls, assume padding is equal
top and bottom, and adjust alignment by half of the difference (this is an
attractive idea, but I note in a single experiment that the height of
noneditable text was 16 while editable text was 21, a difference of 2.5
pixels which is awkward).
Is there a better way to do this? I imagine it's a problem faced before.
Thanks in advance.
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