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c++qtqgraphicssceneqgraphicsitem

Qt QGraphicsScene dynamic GUI elements like containers

I'm using QGraphicsScene and I want to create gui elements.

How do I/should I create a list container i.e. inventory in a game context.

See HERE

For an example of what I mean. There is an inventory widget at the bottom that can be dynamically populated.

Are there any container classes like the standard list widgets but for QGraphicsScene instead?

Right now the only way I can see is to draw a 'rectangle' and manually draw and manage 'squares' on top of it... which wouldn't be a container.

Solution

  • Every QGraphicItem is effectively a container because every item can be optionally parented to a QGraphicsItem. When you do that, the parent affects all its children...if the parent is moved, the children move with it. If a transform, visibility, or opacity are set on the parent, those changes apply to the children as well.

    Basically, your understanding is correct; you would create a parent QGraphicsItem that draws a container outline, and then you would have children that each draw their icons or whatever is appropriate.

    Alternately, you can use widgets in a QGraphicsScene, so all of the widget-based containers are available. If that's the route you want to go, then look at the QGraphicsWidget class.

    This is a complex subject, but hopefully this will get you started.