[Digikam-devel] extragear/graphics/digikam/utilities/imageeditor/canvas

[Frank Siegert]

Hi Gilles,

Gilles Caulier wrote:
> SVN commit 649987 by cgilles:
> 
> digiKam from trunk : Image Editor : severe bug fix in canvas :
> 
> With implementations <= 0.9.1, the canvas doesn't work properly using high
> zoom level (> 500). The real image <==> canvas pixmap interface do not
> compute properlly the tile area values. This provide a lots of  "tile"
> artefacts over the image. Look the example here:
> 
> http://digikam3rdparty.free.fr/Screenshots/editorhighzoomartefact.png
> 
> Note than these "tile" artifacts are not the real tiles of canvas and of
> course not the JPEG artifact (the image is PNG in this screenshot)
> 
> The new implementation fix this problem to handle properly the areas to
> use from the source image to generate the canvas pixmap tiles.
> 
> Note to users : i need your feedback to check if all work fine on your
> computer (to be sure if my patch do not give side effects (:=)))). Thanks
> in advance...

thanks for fixing the tile artifacts, but there is one side effect with that
commit: http://bugs.kde.org/show_bug.cgi?id=139790 (Viewer / editor: the
center of the photo is moving when zooming in or out) has recently been
fixed by you, but since this new commit, it's not fixed anymore. The center
is moving again, before this commit it was "stable".

-- 
Frank