[Digikam-devel] [Kde-imaging] Exposure Blending tool finalization...

[Gilles Caulier]

2009/12/24 Marcel Wiesweg <marcel.wiesweg at gmx.de>:
>
>> >> In all case, Zoom and panning is slow. Can you reproduce ?
>> >>
>> >> I make something wrong with Scene cache settings ?
>> >>
>> >> Sound like Qt4 APi is not yet optimized here.(:=))))
>> >>
>> >> In all case, digiKam::PreviewWidget using imlib2 code is very well
>> >>  faster...
>> >
>> > Are you using Qt facilities to implement the zooming?
>> > I would expect to continue using the current zooming code when drawing on
>> > the graphics view.
>>
>> Hum, what do you mean exactly ?
>
> You say that imlib2 code is faster than the new graphics view widget's zooming
> From that I understood that you're not using DImg based zooming but some other
> code to do the zooming.
> I didn't look at the code yet at all.

Marcel,

All zoom and paning features are controled by QT4::QGraphicView. No
more. Code is very simple, but... not very fast.

Look there :

http://lxr.kde.org/source/extragear/graphics/kipi-plugins/common/libkipiplugins/previewimage.cpp#80

Gilles