Hello,
Well, no possible (for now) with current thumbnails system.
But as in this list, is using the full medium sized thumbnails, you can change html/css to modifiy the way the image is integrated.
For this, with custom CSS, you can change the "background" behavior.
In this case, it's using background-size property to size the medium thumbs inside the box date.
This one is set to "cover". You can use "contain" instead (for not streching the image, and view it all) :
info:
www.w3schools.com/cssref/css3_pr_background-size.asp
Custom CSS:
.ic-box-date {
background-size: contain;
}
CSS to be added in Custom CSS option of iCagenda global options
Hope this helps ?
Best regards,
Cyril