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cnapan  
#1 Posted : Monday, January 21, 2008 7:16:38 PM(UTC)
cnapan

Rank: Member

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Joined: 1/3/2008(UTC)
Posts: 10

Hi, Me again!

We're finding that when browsing folders with thumbnails displayed, the UI is incredibly unresponsive - certainly on the Java version.

1) It would be great if the generation of thumbnails could be faster, and more importantly, when they are being generated, UI wasn't as sluggish.

2) We notice that if you change which folder you're viewing while the thumbnails in the UI are still being generated, that it carries on generating thumbnails for the previous folder even though it isn't visible any more, and this delays further the display of thumbnails in the visible folder, all the while making the UI very sluggish.

Would it be possible to interrupt the thumbnail generation in a folder if you switch folders? Additionally, it would be good if there were a way to cache those thumbnails already generated - it seems to have to redo them if you go back to the first folder again.

All in all, when using the minipics, the Java version seems incredibly slow, and for a while it looks like the browser has hung. (It hasn't, and if you're patient enough, it eventually sorts itself out).

Try it with directories containing large images (e.g. 2700x1700, 1-3 MB)...

Cheers
Andy
Alex Makhov  
#2 Posted : Tuesday, January 22, 2008 12:26:50 PM(UTC)
Alex Makhov

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Joined: 8/3/2003(UTC)
Posts: 998

Hello Andy,

Image Uploader for Java uses standard ImageIO image processing library which is a part of JRE. It makes the size of ImageUploader5.jar file smaller because we do not need to put image processing library code within this file. From the other hand this library is not so fast as we would like. The other possible solution is to use JAI but it is not a part of standard JRE so we cannot use it yet. When SUN adds this image processing library to standard JRE package we will implement its usage in Image Uploader. By the way, the one of the reasons of slow work is setting some restrictions, such as MaxImageWidth/Height, MinImageWidth/Height and so on. So if you really suffer from the slow work try to remove these restrictions.
Sincerely yours,
Alex Makhov

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