## Issue
The current problem with the Circle Select Tool is that it is very inconvenient to change the brush size. In the modal operator equivalent (Shortcut C) it's just about pressing + and - or using the scrollwheel but this is not an option for the Tool. Generally there are no shortcuts for Tools before they are initiated. If the settings need to be changed then this needs to happen in the Tool Settings in the header or sidebar.
But changing the radius via that slider in the settings is awkward and appears visually glitchy since it's intersecting with the UI itself.
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## Proposals
So how can this be fixed. Ideally the solution should be as straight forward as possible without reshuffling the keymap. But it is very important that this is a general solution that can also be used for other brush-like Tools in the future (like proposed retopology tools that also rely on a brush radius)
#### 1. More integrated modal shortcuts
Once a Tool is initiated (usually by click & dragging) it uses the modal operator. This means that when using the Circle Select Tool and click & dragging, the radius can be changed with the mouse wheel & the + and - keys.
The current issue with this is that the Gizmo drawing is conflicting with the Tool Radius and that any changes to the radius are not updated in the tool settings.
Keeping these 2 more in sync would be one solution or at least a great added feature.
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It should be updated to the way the annotate eraser tool works but with more accessible shortcuts for radius changes if the mouse wheel is not an option (pen users)
#### 2. Include Brush Tools in more modes
Another solution is to redesign the Circle Select Tool (and any tools, present or future, that work similarly) as a brush like in sculpt mode or the painting modes.
This means that when the Tool is active it does have a set of shortcuts that can change the tool settings before the tool is initiated.
##### Conflicts
Almost all are already taken like the typical F for brush size changes. It's not clear what shortcut can be used.
Also any shortcut that would be available must then be exclusively used for those brush tools to avoid any conflicts.
##### Solutions
1. Find or make an available shortcut for brush tools radius. This shortcut then needs to be left exclusive of those tools.
2. Override needed shortcuts when brush tool is used (In this case F for the radius). This does introduce difficulties and extra tool switching in edit mode though.
## Open Topics
- Can it be achieved to use both solutions to improve brush like tools?
- Are there possibly other ways of solving the conflicts in proposal 2?
- For proposal 1, what shortcuts could be better for adjusting the brush size? + & - are on the numpad and the brackets are too far to the right and on for example German keyboard layouts not very accessible.