Manual Hiding of Plasma Panel (desktop shell)

[Andrzej JR Hunt]

On Sunday 07 March 2010 14:43:49 you wrote:
> On Sunday 07 March 2010, Andrzej JR Hunt wrote:
> > On Saturday 06 March 2010 18:52:52 Aaron J. Seigo wrote:
> > > i don't think this will work very well because we will want the button
> > > to overlap with the View of the containment (for visual reasons).
> > > layouts prevent that kind of overlapping (that's mostly the point of
> > > them :) and the position calculations in this case are not hard to do.
> >
> > I'm not sure if I'm understanding you corectly: are you suggesting that
> > the buttons are drawn partly outside the area where the panel (i.e.
> > containment) is drawn (in other words making the panel containment
> > smaller than the view), and then drawing the additional background to
> > make this
>
> there is the misunderstanding: right now the panel window -is- a view: it's
> not something set on stone: the view itself can be layouted in the form
> button-view-button, or more probably, the anel still being a view but with
> its viewport shrinked to make room for the buttons
I'm still slightly confused... Just to make sure I understand everything 
right:
From what I have seen the panel itself is a containment, this also does the 
painting of the panel, places the cashew on it, has the applet placed on it. 
The panelView is responsible for hiding/showing this etc: the panel is inside 
the view, and until now completely fills it.
- Up until now I have only really added the buttons on top of the view. and 
have tried to get the panel (containment) to leave extra blank spaces so that 
the buttons have space (using setContentMargins()). This method however isn't 
particularly good because it places assumptions on the containment about its 
margins which shouldn't be made as not to break anything. (This method also 
doesn't work because of the cashew not moving...)
- The suggested method is to make the panel containment smaller than the view, 
then adding the buttons in the empty space at either end of the view, and 
painting the background to make it one with the containment? (This would 
require rewriting all of the view's calls to resize the containment to leave 
the required space, and possibly to position it, since the containment isn't 
currently affected by the contents margins of the view, and the viewport 
margins of the view only affect the visible area, but not the actual size, of 
the panel containment. Alternatively the panel containment has to be made 
part of a layout inside the view.)
- Putting the buttons as part of the containment -- but only the panel 
containment class, not the overall plasma:containment class -- (but leaving 
the hiding functions in the view) still isn't OK? (I was just thinking about 
this: the cashew and panel painting are all done by the containment: since 
the buttons themselves are a display/control issue, as opposed to the hiding 
which is a view issue, should they not also be dealt with by the 
containment?)

> > fit in? The one problem I can see there though are that I have to disable
> > the rounded corners of the panel (I'll have a look to see how they are
> > currently determined / set.). (The layout shouldn't make much of a
> > difference in this method though, since at the moment it does exactly
> > what my positioning calculations were doing.)
>
> you don't have to disable them, just paint -over- them, on compositing but
> replacing wat that was already painted
That isn't too difficult in itself, but if the cashew is showing I need to 
paint more of it on, since when the panel end is curved, the curve cuts off 
part of the cashew (it gets placed at the very end of the panel), but the 
panel now has the curve further away, so we need to fill in what wasn't 
painted with the extra parts of the cashew. Or does the compositing keep the 
border programaticallt separate from the contents of the panel (when drawn), 
so that I can somehow easily remove it?



-- 
Andrzej JR Hunt -- andrzej (at) ahunt.org