View Size

[mutaboss]

I'm writing a maze generation program and want to have dialogs around it to customize what happens. What I would l like to do is be able to detect the size of the screen and generate a maze that will fit in that area, but I can't seem to find a reliable way to get the screen size from Cursive. Is that possible?

[gyscos]

Hi!

There are a few ways to achieve that:

• You can call Cursive::screen_size() to get the last used screen size. Note that:
  • This will only be available after the backend has been initialized, which usually happens in the call to Cursive::run(). This means that it's not available before running the event loop.
  • It will return the entire available space for the application. If you use margins or padding (for example if you add regular layers) you will have to subtract that yourself.
• You can get the available size for an individual view in its call to View::layout. So if you implement a View yourself (or if you use a Canvas), you can put the maze-building logic in the layout function and use the size there.

[mutaboss]

Ah, totally. I implemented a custom view and got it working. Sweet! Clearly it has been far too long since I have done any GUI programming, I'll need to rethink my program a bit, but I'm now moving forward again. Thanks for the help!