Rather OT - what is this icon?

[Luigi Toscano]

On Tuesday 13 of October 2015 17:15:09 Daniel Vrátil wrote:
> On Tuesday, October 13, 2015 5:06:28 PM CEST Timothy Murphy wrote:
> > What is the syringe-like icon which appears on all plasma pages
> > in the "title bar" at the top of the page, second place on the left?
> > And what exactly is its function?
> > When I left click on it, it turns into a small white disk
> > with a dot in the centre.
> > If I click on it again, it turns back to the syringe icon.
> > When I right click on it, nothing happens.
> 
> It's not a syringe, but a pin :-) When you click it, it pins the window to
> all virtual desktops.
> 
> I must say however that it feels a bit "magic" with no clear explanation or
> analogy, took me a bit to discover what it does :)
> 
> > More generally, is there a page online somewhere
> > that outlines the anatomy of a plasma page?
> 
> There's https://userbase.kde.org/KWin but I'm not sure how much up-to-date
> it is.

The official documentation is up-to-date!
https://docs.kde.org/stable5/en/kde-workspace/kcontrol/kwindecoration/index.html


> 
> > When I hover over any icon in the panel I am told what it is;
> > and if I right-click on it I'm told more about it.
> > But when I hover over, or right click on, icons in the title bar
> > I get no response.
> > That seems unfortunate to me.
> 
> +1, I could swear that there used to be tooltips when hovering mouse over
> the action buttons in titlebar....

There was in the kdelibs4 version, yes.

Ciao
-- 
Luigi