Re: Patch for SC_MARK_BAR to have a minimum width

Hi Neil,

> On Apr 9, 2025, at 6:40 PM, 'Neil Hodgson' via scintilla-interest <[email protected]> wrote:
> 
>   Hi Mitchell,
> 
>> I like to use a thin margin for markers in conjunction with SC_MARK_LEFTRECT. If I enable change history, the change history markers are drawn a single pixel in width. I’d like to propose a minimum width: 4 pixels (2 for the left and right foreground border, and 2 for the background fill).
> 
> 2 and 3 pixel wide bars seem reasonable to me and are used by other applications. 2 pixel wide bars don't have space for any background fill but just showing the frame colour is a fine decay path.
> 
> Even 1 pixel isn't dreadful if you place another light-coloured margin to the left (like line numbers). On low-resolution (800x600) screens it's fairly clear.
> 
> Some tweaks to the size could be made like using ceil instead of floor on the width but requiring it to always be at least 4 pixels wide seems limiting to me.

I felt like 4 pixels is the minimum that allows a visual distinction between foreground and background. That said, I’ll take anything more than the current 1 pixel minimum. I’m on a Retina display and 1 pixel is not pleasant, no matter what margin it’s next to.

Cheers,
Mitchell

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