[bug] Coordinates / intensity values only update on click and hold (wx + pygfx)

[gnodar01]

Bug description: The coordinates of the mouse pointer and intensity value(s) under the pointer do not update when moving the mouse around. However when I click on the image, the coordinate and intensity value updates (once) depending on where I clicked. If I click and hold the coordinates and intensity values update continuously, but since the pointer is anchored to a small region around where the click event happened, updates only occur for that region.

Using:

• pygfx: 0.9.0
• ndv: 0.3.1
• wxpython: 4.2.3
• python: 3.9

Running on Mac OsX (15.4, x86_64)

Did not see this error on jupyter + pygfx

Same error with every example image I tried (example video show float dtype, but tried on uint images as well).

Error occurs regardless of mode (grayscale, composite, etc).

Screen.Recording.2025-05-08.at.11.36.29.AM.mov

[gselzer]

Ooh, yeah, definitely looks like a bug! Probably just only firing off the mouseMoved event when dragging - with qt and jupyter it is fired regardless of button status.

Will take a look soon!