TRichView Gutter component/option for displaying line number

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abranquart
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Joined: Thu Jul 05, 2012 1:00 pm

TRichView Gutter component/option for displaying line number

Post by abranquart » Thu Aug 02, 2012 9:02 am

Hi Guys,

Is there any component or sample on how to display a gutter for displaying line numbers with TRichViewEdit ?

Thanks.

Sergey Tkachenko
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Post by Sergey Tkachenko » Thu Aug 02, 2012 1:26 pm

Unfortunately, no. The current version does not allow drawing line numbers.

oickler
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Joined: Fri Apr 12, 2013 1:15 pm

Re: TRichView Gutter component/option for displaying line number

Post by oickler » Wed Mar 28, 2018 8:54 am

Hi, does the current version supports this function?
I really need it for a code viewer in TRichView not in TRichViewEdit.
If not, is it possible to draw it by myself?

Sergey Tkachenko
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Re: TRichView Gutter component/option for displaying line number

Post by Sergey Tkachenko » Wed Mar 28, 2018 12:50 pm

It's possible to draw line numbers in a event, but it will be too inefficient, because line numbers are not stored, and you need to calculate them every time on drawing. So, when displaying bottom of large documents, it may cause some delays.

In ScaleRichView, we implemented line numbers for each page, because each page has relatively small count of lines. But for continuous view, it is inefficient.

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