[Digikam-devel] [Bug 137320] Thumbnails should continue loading for images that are off-screen

[Marcel Wiesweg]

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http://bugs.kde.org/show_bug.cgi?id=137320         




------- Additional Comments From marcel.wiesweg gmx de  2008-03-18 17:42 -------
#11:
For KDE3, to achieve a), you could start a separate ThumbnailJob with all URLs from the current view. I dont see a way to make it have less priority than the main thumbnail job then though.
In KDE4, we can of course have a thread, with a low priority then.
For b): Yes this can work. Just make sure that after loading the next row/rows/screen of thumbnails, the number of currently visible + preloaded items does not exceed the cache size (For cases of large monitors and small pixmap size; in the case of small pixmaps and thus more visible and preloaded pixmaps, the number of cached pixmaps can of course be increased, a smaller pixmap taking less memory)

#12:
These are advanced options, for the usual users it should work out of the box, but if there is real user request why not. Perhaps sliders trading CPU and memory usage vs. performance?

#13:
The progressive reading feature applies when the data itself comes in chunks over a network; and interlaced reading applies if the thumbs are interlaced, which they must not be according to the thumbnail spec.