bug#56607: 29.0.50; (setq auto-resize-tool-bars 'grow-only) has no effect (pgtk)

[Richard Hansen <rhansen@rhansen.org>]

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Po Lu wrote:
> Richard Hansen <rhansen@rhansen.org> writes:
> 
>> Can the toolbar be nested inside a container widget whose size we can 
>> control?
> 
> Perhaps, but then we would only be controlling the size of that widget, 
> and not the toolbar itself.

Can the dimensions of the toolbar be inspected?  If so, we can force the container widget to never shrink if `auto-resize-tool-bars' is `grow-only'.

> 
> GTK toolbars don't wrap extra items, they truncate them.  So 
> `auto-resize-tool-bars' has no real chance of working anyway.

If the toolbar width changes, we could do the (un)wrapping ourselves: move the buttons to/from another toolbar underneath the upper toolbar.  The lower toolbar would still be inside the same container widget as the upper toolbar, and `grow-only' would pay attention to the sum of the heights of the toolbars.  Would that work?

(Sorry for all of the questions; I'm not familiar with GTK.  But I'm willing to spend some time to cook up some patches if given some hints on how to tackle the problem.)

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