Suggested improvements to image scale choices

[fulv]

As long as there is no way to provide configuration options TTW, I suggest changing the scales used for the "fullscreen slideshow" and for the "grid view".

The Plone default scales are:

• large: 768x768
• preview: 400x400
• mini: 200x200
  -etc

But the README file recommends to change these to:

• large: 1400x1400
• preview: 600x600
• mini: 400x400

Instead of forcing users to change their scales, which could have bad consequences elsewhere in an already existing theme, why not use "preview", which is 400x400 by default?
Also, I see no downside in using the image's original size (instead of "large") for the "fullscreen slideshow". Spotlight seems to do a good enough job fitting an image to the viewport, whereas 1400x1400 would be too small for some screens, anyway.

[MrTango]

I think a control panel to configure the used scales, could be helpful here.
For example i always change the default scales, because be default they are broken in Barceloneta. Have a look how the album view looks like with default settings.

The original size can work, but can also lead to problems when people upload cam pics without shrinking them to a sane size before. I build an addon to force max image size in Plone, which I'll polish a bit when i have time. That could be a good companion.