With some exceptions, the Qt Graphics View Framework satisfies all these goals with very little additional code from the user. It won't automatically render th

With some exceptions, the Qt Graphics View Framework satisfies all these goals with very little additional code from the user. It won't automatically render things as a tree (but the widget system does that for you) or doing layout flow (it's not a layout manager). But it does all the other things so well it's amazing it hasn't been cloned into every other graphics framework. https://doc.qt.io/qt-6/graphicsview.html https://doc.qt.io/qt-6/graphicsview.html