Enable Ctrl+MouseWheel zooming in VisualShaderEditor and VisualScrptingEditor.

[BuzzBurrowes]

No description provided.

[KoBeWi]

Isn't this the same as #47173?

[aaronfranke]

@KoBeWi I think @BuzzBurrowes attempted to open this one for master, but the change is on top of the 3.x branch, so @bruvzg changed the base branch in the PR to reflect that. @BuzzBurrowes should change this PR to actually be based on master.

[YuriSizov]

But it's already implemented on master, and #47173 is a backport of all of the related changes for 3.x.

[BuzzBurrowes]

Sorry for making the mess here. I was going to submit the change based on the 3.2 branch, but I listened to GitHub when it told me I should submit it to master :-( I should have stuck with my intuition. Also sorry if this has already been addressed someplace. I needed mouse wheel zooming and more zooming depth as I work on a small screen laptop, and even with the map view, I still find it tough to navigate around the graph without being able to zoom out more.

[YuriSizov]

Generally all changes need to first happen in master, and only then can be backported to 3.x. So GitHub didn't lie to you. But indeed, we already have this fixed in master, and there is a pending backport for 3.x. Since your implementation is original, I'll close it in favor of #47173, which is a direct backport.

If you think that your implementation is still better than the one that is already in master, feel free to open a new PR against it.

[BuzzBurrowes]

Looking at #47173 I can see that it does add mouse wheel zoom, but doesn't add greater zoom depth. My approach is a little more intrusive, but I think by switching to tracking a zoom factor instead of a scale directly it makes for cleaner zooming and less floating-point degradation when zooming in and out a bunch. Also, I see in that pull request the next issue I was going to look at which is related to clicking connection points when zoomed.

So... yeah... I will switch to 3.x locally. Wait for the backport to be committed, and then maybe reapply some of my changes that increase the max zoom factor.