[Digikam-devel] Using image editor canvas with Preview mode...

[Gilles Caulier]

2007/4/8, Marcel Wiesweg <marcel.wiesweg at gmx.de>:
>
> Am Samstag 07 April 2007 21:18 schrieb Gilles Caulier:
> > 2007/4/7, Marcel Wiesweg <marcel.wiesweg at gmx.de>:
> > > > Fine for me. i need this to implement the LightTable because i will
> use
> > > > more than one instance of Canvas/DImgInterface at the same time,
> > > > embeded
> > >
> > > in
> > >
> > > > a same KMainWindow. I will souns like an image editor view separated
> by
> > > > QSplitter. This vision of a future Light Table is fine for you ?
> > > >
> > > > If yes, are you free time this WE to patch source code of
> > > > Canvas/DimageInterface in this way ?
> > >
> > > Patch as described above is in SVN.
> >
> > Thanks Marcel. I will probably start the new Light Table tool next week.
> >
> > Are you take a look into the new Preview tool witch support
> > Scrolling/Zooming ?
>
> Yes I just did. Great work!
>
> I had one problem: See
> http://digikam3rdparty.free.fr/Screenshots/zoominginpreview-artefact.png
> This is created reproducibly at one zoom level. The following zoom levels
> were
> all right again. To reproduce, zoom in 8 steps and then zoom out 5 steps.


Damned, i cannot reproduce here, with the same image...


Some minor problems (I could change most of them myself, but I don't know if
> I
> may and should ;-) ):
> - the background is black. Before it was white (or following the color
> theme?)


Normally, it follow the theme color scheme. Are you using a fresh svn
checkout ?

- mouse wheel zoom direction: Take a look at KPDF, konqueror. They zoom in
> on
> Wheel_up. See here as well: http://bugs.kde.org/show_bug.cgi?id=61862


I will take a look.

- in the preview loading, there is still one QImage::smoothScale when images
> are scaled down to preview size. Should this be replaced by FastScale?


Yes, it can.

If yes
> would you mind to move fastscale somewhere in libs/ ?


sure, but where ? FastScale only support QImage.


- is zooming out , making the image smaller than the available space, really
> needed?


right question. Its just a polishing. We will wait and seen user feedback


- discoverability: will users know that they can zoom?


Today, CTRL+ and CTRL- control zoom in /out. buttons on tool bar (used
before to only increase/decreased thumbs size) can be used for that.

I will add a control to the status slider too. It wil be enough. I'm sure
than user will discover fast this feature...

Gilles
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