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List:       kde-devel
Subject:    Re: Folder previes in Dolphin
From:       "Jesse L. Zamora" <xtremek2008 () aim ! com>
Date:       2008-11-16 23:09:42
Message-ID: 200811161809.42385.xtremek2008 () aim ! com
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On Sunday 16 November 2008 14:02:19 Robert Knight wrote:
> > - what should happen with directories having e. g. only text files?
> > A preview of the text files in the folder? Or should just pictures be
> > handled?
>
> I would suggest only showing actual previews for images to keep
> things simple.  For other file types I think it would be more useful
> to display the
> mimetype icons for the most common filetypes in that folder.  Text previews
> as they are currently implemented are not very useful because you cannot
> read the text easily and the font used to render them isn't aesthetically
> pleasing either.
>
> For example, if I have a folder consisting of:
>
> - 13 ODF word documents
> - 13 PDFs (of the above documents)
> - 2 images
> - 1 spreadsheet
>
> Then I would suggest showing the mimetype icons for ODF text and PDF on the
> folder, ignoring the images and spreadsheet.

Yup, I agree totally. That's a great idea, because the folder previews would 
just be for images.

>
> > - what should happen when having small folder icons?
>
> Perhaps switch off previews below a certain (largish) size and revert to
> small mimetype icons instead.  Then below another pre-determined size turn
> off preview hints altogether.

I also agree here....

>
> > - which 4 from n pictures should be used as preview?
>
> That could get quite interesting.  The simple thing would be to pick 4
> images at random.  A better approach
> would be to rank the images based on some simple metrics and make previews
> for the 4 highest-scoring ones:
>
> - Aspect ratio (where a high score is given to images with a typical
> photo aspect
> ratio like 4:3 and a low score to very thin or very wide images)
> - Date of last modification (higher score for recently modified images)
> - Size (higher score for larger images)
>

Actually, maybe it could be done that it grabs every so many previews from a 
folder, maybe based on (n = number of previews) n/4.
 
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