I'm working on a little vector drawing application for macOS, written in SwiftUI. After experimenting with Path, Shape and Canvas, I've decided Canvas is the way to go for this. I’ve got a basic window with a scrolling canvas in it:

But it has some issues, the first of which: how can I simulate an infinite grid? In the past, I would just draw my scroll view’s content by looking at the visible bounds and filling the window. But if the window is enlarged to be bigger than the Canvas’s size, the scroll bars disappear and the Canvas is centered. I’ve tried setting its frame to maxWidth: .infinity, but that doesn't have any effect. Moreover, drawing outside the Canvas is clipped.

I wanted for my logical canvas's bounds to grow as new objects were created, always being slight larger than the encompassing rectangle. I’m not sure how to accomplish that in SwiftUI.