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Get image size without loading it
Message
De
04/10/2013 15:00:14
Dragan Nedeljkovich (En ligne)
Now officially retired
Zrenjanin, Serbia
 
 
À
04/10/2013 08:35:21
Information générale
Forum:
Visual FoxPro
Catégorie:
Photos et traitement d'images
Versions des environnements
Visual FoxPro:
VFP 9 SP2
OS:
Windows Server 2003
Network:
Windows 2008 Server
Database:
MS SQL Server
Application:
Web
Divers
Thread ID:
01584779
Message ID:
01584794
Vues:
62
>>I'm generating webpages with some images in them. The slow part is getting the image size, which I do by
>>
>>
>>loImg=LoadPicture(lcFajl)
>>lnWidth=Round(loImg.Width/26.458,0)
>>lnHeight=Round(loImg.Height/26.458,0)
>>
>>
>>The first line is the slow part. I seem to remember these attributes can be extracted, given the filename, by some feature of scripting.filesystemobject that I can't find now.
>>
>>I think I saw something like that in the last ten days or so, but me.memory.refresh() returns .f. - so, is there anyone with better memory?
>
>I think FileSystemObject loads the file anyway so you wouldn't see much of a speed improvement.
>
>The fastest way is to read in the header and extract the dimensions from there. What type of file are you looking at ?

About 99% of it is jpg, so a jpg-only solution would work perfectly. The remainder can be converted to jpg :).

back to same old

the first online autobiography, unfinished by design
What, me reckless? I'm full of recks!
Balkans, eh? Count them.
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