Qt-interest Archive, September 2007
Help on multi-layer view
Message 1 in thread
Dear all
I need to set-up something similar to a multi-layer view using
QGraphicsView / QGraphicsScene, but with the ability to see all
layers stacked, when required.
I've carefully read all previously-posted message regarding this problem
but I'm still not sure on how to proceed... create a view for each
layer ? reimplementing QGraphicsView::drawItems just to draw items on
current layer ? what else ?
please help!
thanks a lot
Andy
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Message 2 in thread
Dear listener,
anyone can point me on a "right" solution ?
I've read all the messages from Andreas Hanssen, Chris Portka, Fabian
Hohmuth but I'm still confused on how to proceed...
One of these messages says:
>Invisible helper items are a very nice way to solve this problem.
>You get everything you want from a layer, and all you need to do
>to switch the stacking order is to change the layer items' Z value.
>Non-drawing items are the cheapest kind of items to maintain.
what are "Invisible helper items" ?
Any help would be greatly appreciated.
Andy
On Fri, 2007-09-07 at 21:32 +0000, Andy Hirsh wrote:
> Dear all
>
> I need to set-up something similar to a multi-layer view using
> QGraphicsView / QGraphicsScene, but with the ability to see all
> layers stacked, when required.
>
> I've carefully read all previously-posted message regarding this problem
> but I'm still not sure on how to proceed... create a view for each
> layer ? reimplementing QGraphicsView::drawItems just to draw items on
> current layer ? what else ?
>
> please help!
>
> thanks a lot
>
> Andy
>
>
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