New extension: SnapshotPDF

Friday 20 January 2006 1:29:27 pm

Hi,

Would this extension be possible to use to populate an image attribute ?

My idea is to add an attribute image to the class file, and automatically populate it with the snapshot of the first page if the uploaded doc is a pdf.

Does it make sense ?

X+

http://www.sydesy.com

Saturday 21 January 2006 12:46:48 pm

Hi Paul,

didn't realise you have a blog. Is that new ?

X+

http://www.sydesy.com

Thursday 26 January 2006 7:52:18 am

Hi!

Nice extension!

I'm trying to make a thumbnail of pdf's using this extension.
Using css to set image size seems like a bad solution, so I had a look at Ghostscript commands to be able to utilize width, height and resolution parameter.

http://www.cs.wisc.edu/~ghost/doc/AFPL/7.04/Use.htm#Parameter_switches

It seems to be parameters like -dDEVICEWIDTHPOINTS=w and -dDEVICEHEIGHTPOINTS=h, but I cant get it to work, the size stays the same.

Template:

<img src="{ezsnapshotpdf($node.object.data_map.file.content.filepath,2,100,150)}" alt=""/>

Extension:

$command = 'gs -dNOPAUSE -dBATCH -dFirstPage=' . $page . ' -dLastPage=' . $page;
$command = $command . ' -dDEVICEWIDTHPOINTS= ' . $width . ' -dDEVICEHEIGHTPOINTS=' . $height;
$command = $command . ' -sDEVICE=jpeg -sOutputFile= ' . $save_file . ' -r72 -c --setpdfwrite ' . $file;

Felix, do you have any tips?

www.vzt.no

Friday 27 January 2006 2:49:27 am

Excellent!!

Just what I needed, good work.

I want to show the thumbnail in a line view, with a link to full view.
It seems I have to trick it a bit to get the thumbnail filename, and the page has to be refreshed to show the thumbnail picture.

This is what I got in the lineview template:

	{section show=eq($node.object.data_map.file.content.mime_type_part,'pdf')}
		<div class="attribute-short">
			<p><b>Ezsnapshotpdf Thumbnail</b></p>
			{def $fullpath = ezsnapshotpdf($node.object.data_map.file.content.filepath,1,$height,$width)}
			{def $split = $fullpath|explode('.')}
			{def $thumbpath = concat($split.0,'.',$split.1,'-',$height,'x',$width,'.',$split.2)}
			<img src="{$thumbpath}" alt=""/>
		</div>	
		<div class="attribute-short">
			  <a href={ezsnapshotpdf($node.object.data_map.file.content.filepath,1)}>See PDF full view</a>
		</div>
	{/section}

www.vzt.no