fix: use last focused/resized view to determine shape of BqplotImageView

[iisakkirotko]

Pull Request Template

Description

Instead of always using the lowest cid view to determine the aspect ratio / shape of a Bqplot image viewer, use the last focused / resized one. focused_at describes the time that the window of that view was last focused, while resized_at describes when each viewer was last resized, so this way distortion from resizing based on a view in a popout window will be fixed once the original window is brought into focus.

Needs glue-viz/bqplot-image-gl#112 to work. Let me know if you need this to use the old behaviour as a fallback with previous versions of bqplot-image-gl.

TODO:

• Bump bqplot-image-gl in the dependencies once feat: resize & focus tracking in view_data bqplot-image-gl#112 is released.

[maartenbreddels]

Let me know if you need this to use the old behaviour as a fallback with previous versions of bqplot-image-gl.

I think it's fine like this, if we also bump

glue-jupyter/setup.cfg

Line 26 in 1876875

bqplot-image-gl>=1.5.0

Otherwise some people might get the old behaviour.

[maartenbreddels]

We can use version 1.6.0 now (https://pypi.org/project/bqplot-image-gl/1.6.0/)