Is Quick Hatch'em All plugin possible?

Hi guys,

I asked a question about solid-fill hatch problem in /LibreCAD-user and get  an answer that there is a algorithem problem with it . After using it for a while , I wonder if I can develop a plugin for quick hatch.

In brief，most of my patterns are made of many rectangulars , so if it is possible that I can select all rectangulars which is possible as I check the documents_interface.h and find "getAllEntities" then solid-fill hatch them one by one where I couldn't find the function. So I can hatch them all without repeating mouse click which is really exhausting.