GIMP 3.1.2 really hard to control with Appple magic mouse

[foxycologist]

I am running GIMP 3.0.4 on an iMac with Sequoia 15.6.1. The last major upgrade to GIMP (presumably to v.3.0.0) made a change to the controls such that all the sliders, mouse movements, etc became far more sensitive (i.e. a small mouse movement produces a huge change) and actually very difficult to work with.

This is particularly frustrating when trying to navigate around a large image by sliding a finger over the mouse.  The on-screen sliders work OK for navigation, but are far less convenient - and anyway, this all used to work fine in GIMP 2.

The slider scales for things like brush size seem now to be logarithmic.  That makes it (too) easy to make big changes to brush size, but really difficult to select small brush sizes (e.g. for spotting dust on scanned images using the clone tool).

I have dug about in the iMac system settings, and tried all possible combinations of the mouse controls, without any effect on GIMP.  It seems there must be a mis-communication between the OS and GIMP.

Any ideas for workarounds or fixes, please?

[rich2005]

I understand it can be difficult using a Mac, but for a regular 3 button mouse and say the brush size slider in tool options.
The left mouse button give a large increase
The right mouse button gives a small increase

   

(sorry about the animation  )

Do the square brackets [ ] work for brush size on a Mac ?

[foxycologist]

(Yesterday, 03:25 PM)rich2005 Wrote: I understand it can be difficult using a Mac, but for a regular 3 button mouse and say the brush size slider in tool options.
The left mouse button give a large increase
The right mouse button gives a small increase


Do the square brackets [ ]  work for brush size on a Mac ?

Thanks so much for your reply.

To my shame, I didn't know about the different action of right and left mouse buttons with sliders.  Yes, it does work, but as you say it's a bit awkward with the magic mouse.  It will help, but it's not great.

I had also totally forgotten about controlling brush size using left and right square brackets.  On the Mac they don't work on their own, but I've found they do work as shift-[ and shift-].  That will be extremely useful!

In v2 I had been used to navigating around the image area by swiping a finger across the surface of the magic mouse (like when scrolling).  In v3 (or at least v3 + Sequoia) that is very jumpy and unreliable.  Of course it is simple enough to bring up the navigation window and use that (works well), or to use the marginal sliders, but both involve extra mouse movements outside the image area, so are not so convenient.