with_resizable / set_resizable

[dannyfritz]

Be able to disable resizing of the window. This would include removing the resize cursors when hovering over the edge of the window.

Related to #65 and rust-windowing/glutin#877

	Windows	X11	Wayland	MacOS	iOS	Emscripten	Android
with_resizable	✔#541	✔#556	✔ #565	✔#553	NA	NA	NA
set_resizable	✔#558	✔#558	✔ #565	✔#553	NA	NA	NA

[francesca64]

Thanks for reporting this. AFAIK this should be straightforward to implement on X11, Windows, and macOS.

@vberger is this possible on Wayland?

[dannyfritz]

I'm playing around with this to see if I can get it to work for Windows. Removing WS_SIZEBOX from the styles seems to mess up a lot more than just preventing resizing.

UPDATE: That was easy. My boolean logic was just flipping everything accidentally.

[elinorbgr]

Right now it is already doable (I believe on all platforms) by setting a min_size and max_size, both with the same values.

It'll require some work on smithay's client toolkit to remove the "resize" cursor hint from the decorations as well on wayland, but it should not be a big thing.

[dannyfritz]

I made a commit to attempt X11, I haven't played around with it too much, but it seems using _NET_WM_ALLOWED_ACTIONS and _NET_WM_ACTION_RESIZE isn't having any effect.

[francesca64]

You did a good job following the conventions of the existing code, but your implementation misses the mark. send_client_msg is for sending events of type ClientMessage to a window (basically custom events), which are used for implementing protocols. Window properties are accessed using get_property and change_property (you'll have to get the current property before you change it, since _NET_WM_ALLOWED_ACTIONS is an array and you're trying to remove an atom from it).

I'm resisting the temptation to spoil the solution for you, though if you don't find the suspense thrilling, I can just tell you. I'm sort of curious to see how easy my refactors have made the X11 backend to contribute to, but I wouldn't want to waste your time.

[dannyfritz]

I'll take a stab at it tomorrow morning. I think you've given enough hints for me to figure the rest out. 😛