As a picture is worth a thousand words, I built a mockup based on the GIMP metadata editor. The Exif tab has been left alone as a lot of that data comes straight from the camera. The XMP and IPTC tabs have been merged and separated into tabs called: Who, What, Where, When according to Metadata Working Group guidelines. Under the hood, gexiv2 composite functions would be used to read and write to the correct metadata fields.
Attachment:
01who.png
Description: PNG image
Attachment:
02what.png
Description: PNG image
Attachment:
03where.png
Description: PNG image
Attachment:
04when.png
Description: PNG image
