[rcore] Current mouse position not updated after window repositioning

[rossberg]

Issue description

Raylib's current mouse position is only updated on mouse events. Hence, if the window position is changed (using SetWindowPosition) without mouse movement occurring, then the current mouse position is not adjusted. The values reported by GetMousePosition and GetMouseDelta are incorrect afterwards, until the mouse is moved again.

This was a bit of a headache for a little windowed GUI I implemented.

Since there is no way to directly query the absolute mouse position either, my only workaround was to maintain mirrors of mouse position, delta, and the previous window position. On each frame check for a change in window position co-occurring with a zero mouse delta, and in that case, correct the mirror mouse position and delta by the window movement delta. That seems to work, but of course, it would be preferable if that wasn't necessary.

Environment

Running on MacOS. But deducing from a glance at the Raylib sources, I expect this to occur on other platforms as well.

[rossberg]

Update: I just tested it on Windows, where the problem does not occur. So it may be specific to MacOS and its Window manager.

[Peter0x44]

Does SDL or rgfw have this problem?

[rossberg]

@Peter0x44, good question. I'm using Raylib through a language binding (OCaml), so I have no access to build options.