I'm really stuck with this one, so if someone has a little time to help me on this...
What i want :
I have a pictures library in a site. It is even a PublishingImages library. a lot of my images are .PNG files. So, i want to display a thumbnail of these files along with the name and every property i could get.
What i have :
Because these are PNG files with transparent background (and a lot of time, they are white icons), Sharepoint does not generate a good thumbnail and this last turn out to be all white. So, it is not helping.
What i thought :
I understood that SP is not good with calculating PNG thumbnails and that my PNG files are converted to JPG etc.. but i would like it to render fine, ok?
So, i thought i would create a new Content Type Column, which should be a html calculated column, with a formula which takes the original path of the file and add it a rendition.
So, instead of having only "Name" and "Thumbnails", i would have "Name", "Thumbnail", "Custom Thumbnail" as columns.
And in Custom Thumbnials, i should have a formula which says
concat(ImageURL,'?RenditionID=9') for example.
Do you know how i could manage to calculate my custom column on one other ? Do you know how i could manage to do that ?
Thanks a lot for your time and help !!