Code review comment for lp:~mrqtros/ubuntu-docviewer-app/ubuntu-docviewer-app-adv-logging

1) Yes! If we could remove those #ifdef's from the code, it would look more linear/less bulky(TM) and it would be a great "double win".
However, I'd like to have something similar to the current config.h, so that we can toggle a more verbose output by uncommenting a single line. Which could be a suitable place for that?

2) Agree! "RenderEngine" is a good category. Others could be:
   - "TileBenchmark" in LODocument paint functions
   - "TileManagement" in LOView, for providing output about creation/removal/changes about the tile map and the visible/buffer areas
   - "ZoomEvents" for the automatic zoom management and events triggered by a change in the zoom value[1]
   - "VerboseOutput" for general information (e.g. error warnings) and something else we could add in future

3) "Loading document ..." and "Document loaded successfully !" may stay always visible.
   LODocument::loadDocument() is the place where the magical things happen (all the LibreOffice stuff are loaded there, and many 'events' in the plugin depend on a successful/failure of its execution).
   Having those two lines at the beginning/end of the function is more confortable for me. :)

[1] See for example "Zoom value of tiles is different than the current zoom value. Erasing cache..."
    This string could also be filtered by a "TileManagement" category, but it's not possible to assign a string to multiple categories, for what I see.