PW2 planning: one shell to rule them all

[Marco Martin]

On Friday 01 February 2013, Aaron J. Seigo wrote:
> hi ..
> 
> i started a wiki page for the "one shell to rule them all" feature:
> 
> 	http://community.kde.org/Plasma/shellswitching
> 
> feedback, edits, input, ideas, etc welcome/needed.
> 
> we'll go over this and more at upcoming meetings, and to give us a head
> start i'm writing up things we've discussed in the past.

i added a description of the test shell there is in the future plasma-
frameworks repository. is intended to be pretty much a testbed for libplasma 
features (to unbreak them one by one) but if kept clean can give birth to a 
full shell (by transplanting the needed pieces from plasma-device and plasma-
desktop)

this is what does right now:
* loads a corona, restores the containments (or creates a default layout) that 
right now are a pure qobject tree
* creates a view per screen (just with qdesktop widget) a View is in the 
shell, not in libplasma anymore and is a QQuickView subclass
* the view loads in itself a qml file, coming from a package (right now 
org.kde.homescreen.desktop) that will become pretty much the workspace 
definition

the idea for continuing is, when containments and applets will be again 
worsing scriptengines (and will load a real qml package), Containment will 
have a pointer to the qml package root element (just a qobject* is all is 
needed). When a containment gains a screen, the corona will assign the 
containment root item to the view, making it child of the view root item. this 
makes the containment graphics "migrate" scene (thing that hasn't been tested 
yet how much reliable, but we absolutely need it to work flawlessy) and witll 
be possible from the view qml even animate the transition, if needed by the 
workspace.

Cheers,
Marco Martin