No diagonal window resize cursor

[adriengivry]

Description
When hovering a window border, the cursor changes to show the current action that will get triggered by a left click. (Resize horizontal, resize vertical).
However, it would be nice to have a cursor for diagonal resize.

To Reproduce
Resizing a window by dragging a corner.

Expected behavior
We should have diagonal cursors showing when dragging a window corner

Screenshots

[adriengivry]

This issue is ImGui related, and ImGui source code must be modified

[adriengivry]

After more investigation, it is related to the fact that GLFW wasn't supporting diagonal resize cursor. It has been introduced by: glfw/glfw@7dbdd2e

We should update our GLFW version

EDIT:

These new cursors aren't merged onto GLFW master yet, and we should wait a release before updating (Better stability).

[adriengivry]

Can we double check that this one is fixed?

[litelawliet]

Still not fixed

Created a PR to try to fix that issue : #252