Chage wallpaper at specific times and effects

Hello willi80, thanks for the interest!

This is a very interesting feature. If I understood correctly, you want a feature in which you specify the time and the image and so you make a schedule in which the corresponding image changes on the corresponding time. Am I right?

Yes, but can there also be an overlay transition scheduled as well.

Willi80, google translate didn't help :/
I am not a native english speaker, so can you please describe me what's the "overlay transition"?

Watch the video located here http://www.bisigi-project.org/?p=411&lang=en. There whole thing is done with only two wallpapers. I downloaded the package for the theme here https://launchpad.net/~bisigi/+archive/ppa/+files/airlines-theme_1.5.1.natty.ppa1.tar.gz and extracted it. Looking at airlines.xml file in the airlines-theme\Wallpaper\airlines folder, I can see how it is done by doing something like this:

<transition type="overlay">
<duration>10800.0</duration>
<from>/usr/share/backgrounds/airlines/airlines2.jpg</from>
<to>/usr/share/backgrounds/airlines/airlines2.jpg</to>
</transition>

I hope this helps.

Willi80, this effect (which uses only 2 different pictures and it seems like displaying multiple different pictures by combining these 2 pictures) will only be useful with only a small variety of pictures, not all pictures would have the ability to combine in such a way and to have an interesting result, at least as far as I understand it.

So, the idea of making a feature in which you specify the pictures you want to change and the time of the day in which you want them change is a nice one and far more general because you can specify any images you want to change whenever you want!
E.g., you could use these images:
Morning http://i.imgur.com/onAcH.jpg
Noon http://i.imgur.com/69Vq7.png
Afternoon http://i.imgur.com/pXl5g.jpg
Night http://i.imgur.com/bh39V.jpg
or whichever you like. The point is that this will be far more general :D

I agree changing the wallpaper at specific times is for more general uses and would be a great feature. The overlay effect is for more specific kinds of wallpaper. I did not expect the overlay effect suggestion to be accepted but I figured I should ask anyway. For the wallpaper it does work well with it would be a great feature. I figured it could be included as an advanced option. But thanks for considering the changing at specific times feature and thanks for responding so quickly. I have another question, is anyone reading the sourceforge site http://sourceforge.net/tracker/?atid=1537572&group_id=368928&func=browse I originally made this feature request there but go no response? There are request by other people there as well.

Thanks alexsol, that solved my question.