[Thunar-dev] Thumbnails for HTML documents

[Erlend Davidson]

Benedikt Meurer wrote:
> Erlend Davidson wrote:
>   
>> I'd love to contribute some thumbnailers (I use some less common file
>> formats, e.g. eps and I'd love to have them thumbnailed).  The trouble
>> is, while I can program well in C++, I don't know where to start with
>> writing for thunar.  Is there a howto on writing plugins / thumbnailers?
>>
>> I'm not even entirely sure what a VFS does, I assume it lets you view
>> files without having them in their normal folders?
>>     
>
> Thumbnailers are easy. You don't need to know any of the internals of
> Thunar. Just write an application that accepts atleast three parameters
> (the desired thumbnail size, the input file and the output file) and
> you're done.
>
> Check thunar-vfs/thunar-vfs-font-thumbnailer.c for an example. This one
> expects a font file (OpenType, TrueType) as input file (using the -i
> switch), the desired size (using the -s switch) which is usually 128 or
> 256 and the output file (using the -o switch) which must be a PNG file
> that complies with the thumbnail spec.
>
> Once you're done, we can hook up your thumbnailer in thunar-vfs.
>   
So am I correct is saying that a gif image is actually thumbnailed by 
converting it to a png?  What do you use to do that, imagemagick?  I am 
asking because the 'convert' binary could be used for eps.