support change font size using setFont(...)

[shinespeciall]

currently using this can only change the font size but the rendered lines' position in the widget are fixed

hexview->setFont(QFont("Timers", 8, QFont::Bold));

[Dax89]

I have made some changes, let me know if it works!

[shinespeciall]

it works, thanks for the quick fix !

[aerosoul94]

@shinespeciall How did you make 00 and FF bytes the same color?

[shinespeciall]

i think that is cused by the phantomstyle theme i am using or the palette settings for the whole project:
phantomstyle: https://github.com/randrew/phantomstyle/tree/master
custom color in the project: https://github.com/wario-land/WL4Editor/blob/chunk_editor/Themes.h
reset the project's UI palette: https://github.com/wario-land/WL4Editor/blob/chunk_editor/WL4EditorWindow.cpp#L41

wait, it didn't happen when i implement the hexview at first, so the reason should be elsewhere. idk, at first, i test the hexview in a way provided by the readme file in this repo (it looks like the first pic in this issue), but now i put a QFrame in the ui file and promote it to the hexview, then it looks like the second pic in this issue. (the details are in chunk_editor branch atm)
i just commented out the setFont code but the FF and 00 still remain the modified style, so perhaps it is caused by the subclassing and the theme and palette settings?

[Dax89]

00 and FF bytes' color are changed here:

https://github.com/Dax89/QHexView/blob/master/document/qhexrenderer.cpp#L218