Device image scaling in rack view - switch from "fill" to "fit"

[fknorn]

NetBox version

v4.2.5

Feature type

Change to existing functionality

Proposed functionality

This was briefly discussed in here: #15346

When having a device which is, let's say, only half the width of a 19" rack slot, the current preserveAspectRatio="xMidYMid slice" on the HTML image element results in the image "covering" the entire slot. This leads to it being shown incorrectly in the sense that it doesn't match the real world "look".

When swapping slice for meet, the display is correct:

I assume there has been some though put into the slice attribute (in other contexts referred to as "cover" or "fill") versus meet (aka "fit") being used.

But would it not make more sense to use "meet", in order to fit a device's height into the visual slot?

Use case

It displays devices correctly that don't have the 10:n aspect ratio (n being the number of heigh units covered). For example smaller ISR-routers, or indeed devices that are 5/3rd U tall (they exists too :/).

Database changes

None

External dependencies

None

[github-actions]

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