I have written a few functions to compare QGIS performance to MapInfo. Most of them involve doing some analysis then dumping the results on the map, as such the process would be considered 'finished' when the map has finished refreshing/rendering. I believe in this context refreshing/rendering are pretty much the same thing?
I've had a look around the documentation and have found references to (all under
mapCanvasRefreshed(). These are all 'signals', but I'm not sure how to use them (shame there are no examples in the documentation). Could anyone give me an example? Or is there a better approach? The important thing is to get an end-time when the map has finished rendering