digiKam Map Search Tool Under Construction

After to have improved the geo-location view from right sidebar in digiKam for KDE4, following this blog entry, the story continue with a new powerfull search tool based on Marble Widget to be able to find pictures using a map. The new digiKam search backend implemented by Marcel is already able to perform a search based on a rectangle area defined by GPS positions. Now, we need a suitable graphical interface for end users.
This is a companion discussion topic for the original entry at https://digikam.org/news/2008-06-06_digikam_map_search_tool_under_construction/