Re: some whishlists

Le Monday 14 January 2008 23:30:58 Carles Pina i Estany, vous avez écrit :
> Hello,
>
> On Jan/14/2008, Aurélien Gâteau wrote:
> > Le Monday 14 January 2008 10:43:27 Angelo Naselli, vous avez écrit :
> > > > > -Automatically plays audio files from photo directory, using Fade
> > > > > In and Fade Out (slowly increase and decrase the volume), maybe
> > > > > allowing to repeat or setting up the slide duration to some value
> > > > > to watch all photos during one song or two songs.
> > >
> > > Dosn't it need something like a db? I mean how can you relate one by
> > > one photo(s) to audio(s) - or a group of course-?
>
> here I thought about gwenview configuration file (XML? :-) )

Gwenview configuration file is not XML, it's a simple INI-like format, just 
like other KDE applications.

> Yes, XML file looks fine. Actually: I don't want to do things with DB's
> and gwenview. One of the things that I expect from gwenview is to not
> have DB dependencies, or internal files for everything, etc. so please,
> no DB (other programs could do it...)

Actually if we were using a db engine, it would most probably be sqlite. Since 
sqlite is bundled with Qt, it would not introduce any new dependency.

> XML file: great! then, as Angelo Naselli said we could configure which
> "in directory" music files play, which order, how many time, which kind
> of transitions, etc.
>
> First step for this is the transitions engine. Aurélien: how do you do
> this? just loading two image files to QByteArray or some Qt structure
> and play with pixels? I'm curious to know. And also, any expected date
> for first public testing? :-)

Hum... better let Qt do the work :-). If you combine QPainter and QGLWidget 
you can produce hardware-accelerated alpha blending for example. It's quite 
easy. Just paint the current pixmap, then paint the next pixmap over it, more 
and more opaque.
The thing is: it would be much easier to implement if we use a specialized 
view for fullscreen. Right now the fullscreen view is the same as the 
windowed image view: it can zoom and pan, it can even crop images. Would all 
of you consider it a major feature loss to have a zoom-to-fit only fullscreen 
view?

Aurélien

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