Problem to use PopupApplet

[Charles Wautier]

2009/9/22 Aaron J. Seigo <aseigo at kde.org>

> hi Charles;
>
> let's keep this on plasma-devel at kde.org.
>
> On September 21, 2009, Charles Wautier wrote:
> > 2009/9/21 Aaron J. Seigo <aseigo at kde.org>
> >
> > > On September 21, 2009, Charles Wautier wrote:
> > > > What makes this plasmoid unusual is that the Popup showing/hiding is
> > > > not controlled by an icon as it's supposed to be, but by a click on
> the
> > >
> > > label.
> > >
> > > > To realize that, I tricked, by not setting the PopupIcon (with
> > > >  setPopupIcon) as I'm supposed to do (a known trick on #plasma)
> > >
> > > technically, it's not a trick :)
> > >
> > > > The problem is : it seems that this trick has undesirable
> side-effects
> > > > : 1/ When the plasmoid just have been started, the first click on the
> > > > label show the menu but hide it right away. Then the behaviour become
> > > > normal.
> > >
> > > sounds like a bug in your code, or something we haven't made obvious
> > > enough in
> > > the API.
> > >
> > > you can either override the mousePressEvent in your applet itself or,
> if
> > > the
> > > label in your plasmoid is a separate widget then simply call showPopup
> > > when it's clicked.
> >
> > That is exactly what I do (slot which shows a popup ; its never called -
> > maybe because I choose a wrong signal *
>
> yes, this would be a bug in your code somewhere.
>
> > - but anyway, the popup does appear
> > when clicking on any surface outside the button (c.f. screenshot))
>
> that would be because PopupApplet provides that for you. you can override
> mousePressEvent in your PopupApplet subclass to prevent that.
>
> > > > 2/ When resizing, the mouse cursor keeps the form of the
> > > > resizing-double-arrow even when we hover the popup
> > >
> > > when resizing what, the applet?
> >
> > When I resize the Popup, so the cursor is transformed in double-arrow,
> the
> > cursor keeps this form when I finish resizing (button released).
>
> i can't confirm this with other PopupApplets. does this only happen for you
> with your own applet?
>
> > > it keeps the resize cursor even after you
> > > stop resizing? because resizing the applet continues until you let go
> of
> > > the
> > > mouse button, even if the cursor passes over another window.
> > >
> > > > 3/ The scroll bars are ugly
> > >
> > > which scroll bars?
> >
> > the scrollbars of the popup (which contains a treeview) when the size is
> >  too short : they are different of what they should be (deep black
> >  background and grey scroll)
>
> we don't re-style all scrollbars from all QWidgets put into
> QGraphicsProxyWidgets. so that is to be expected. one needs to either use a
> proper QGraphicsWidget or live with some odd ugliness here and there.
>
> > What is curious is : if I remove the code concerning the Applet itself
> > (opposed to the Popup), and I set an Icon, those bugs disappear.
>
> yes, sounds like bugs in your code. unfortunately i don't have time to
> review
> your code line by line and debug it with/for you, but if you can provide
> simple test cases that do show bugs in libplasa i'm more than happy to
> address
> those on a case by case basis.
>

I made more tests on the plasmoid, and indeed the popup opens correctly if I
change the widget it is supposed to display, so I guess the fault rewards to
my original widget. The graphic enhancement I observed when setting an icon
are only visible with the plasmoidviewer, but not when the plasmoid is in
KDE environnement, so I suppose it was just an illusion.
Thus I observed what you said :  plasmoid has no responsability in those
bugs, and I'll go back searching :)

Thanks for your help !

>
> --
> Aaron J. Seigo
> humru othro a kohnu se
> GPG Fingerprint: 8B8B 2209 0C6F 7C47 B1EA  EE75 D6B7 2EB1 A7F1 DB43
>
> KDE core developer sponsored by Qt Development Frameworks
>
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