[KPhotoAlbum] Crash from the latest svn

Jesper K. Pedersen blackie at kde.org
Wed Aug 18 07:51:57 BST 2010

On Tuesday 17 August 2010 13:39:02 Robert Krawitz wrote:
|    From: "Jesper K. Pedersen" <jesper.pedersen at kdab.com>
|    Date: Tue, 17 Aug 2010 13:05:49 +0200
|    On Tuesday 17 August 2010 02:01:42 Robert Krawitz wrote:
|    | The latest svn crashed when I attempted to resize the thumbnail grid
|    | with the mouse middle button.
|    Hmm the traceback doesn't really indicate much to me, let me know if you
| can reproduce this consistently.
| I simply clicked on one of the corners inside the grid and dragged
| "southeast".
|    | (Personally, I think that that should be disabled with the new
|    | thumbnail code -- accidentally changing the thumbnail size is
|    | presumably a much more expensive operation now.
|    Actually, the next thing I'll be working on is to try and make
|    background threads generate thumbnails, so it shouldn't be that
|    bad. But indeed something to consider.
| If you have 100,000 photos and every one of them has to be
| re-thumbnailed?  Even if it's done incrementally, at least until the
| thumbnails are recreated they're going to have to get built on the
| fly, which is very slow.
|    | I also vaguely recall that we had a similar performance issue in the
|    | KDE3 version that was resolved, at least partially, by using a quick
|    | and dirty resampling algorithm rather than rescaling.  This made the
|    | thumbnails less attractive but much faster to load.)
|    Well actually, that was one of the things I threw out (see my
|    blog), it took quite some time to do this scaling.
| Even a fast resampling (not rescaling)?
I'm not sure what that code would look like. Feel free to give it a shot.


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