selection-animation

[colin-i]

Removing the “marching ants” selection animation significantly reduces CPU usage on low-power devices such as Raspberry Pi.

No additional guard is needed when removing the GLib timer source, since GLib.Source.Remove(0) is defined as a safe no-op:

GLib.Source.Remove(selection_animation_timer_id);

A UI toggle was considered, but there is currently no clear place in the existing UI to expose a global preference of this type:

Selection tools (Rectangle / Ellipse / Lasso / Magic Wand) → too fragmented and tool-specific
Edit menu → closest conceptual match (selection-related operations already live there)
View menu → would be the most appropriate conceptually, but does not currently exist

For now, this is implemented as a configuration-level option.

[cameronwhite]

I agree this is a reasonable option to have 👍 , but I think it needs to be exposed somewhere in the UI otherwise it's never going to be discovered by anyone else

This would be a good case for adding a general preferences dialog which has been discussed in some other tickets.
Let me know if you're interested in working on that, or else we can file it as a separate ticket for the future

[cameronwhite]

A couple minor suggestions here:

• The names of setting keys should go into SettingNames.cs as constants in case they're used in multiple places
• It might work better to check the setting in the SelectionAnimationTick function, that way changes to the setting (once a UI option is added) are picked up immediately

[colin-i]

I added an entry in the File menu, but I made it simple, and I don't need this in SelectionAnimationTick. I could add a live-reload option, but that fits more naturally with a libadwaita preferences dialog than with this simple GTK one. Anyway, I converted it to a draft, and I am happy with "edits by maintainers".