>>>>> "Michael" == Michael Schmitt <[EMAIL PROTECTED]> writes:
Michael> I also looked at QPainter::drawPolyline(...) and I was a bit Michael> astonished by its complexity. The X Window function looks Michael> simple but the Windows port adds a lot of lines of codes. In Michael> particular, the following segment looks suspicious: But all this code is commented out, isn't it? It seems to me that the Polyline call does all the work by itself, especially since the if ( testf( ExtDev | VxF | WxF ) ) branch is only used when printing or drawing to pixmap. Actually the problem with this code is that it is unreadable. In particular several loops should be enclosed in #ifdef DEBUG_QPAINTER. Michael> Anyway, I played a bit with LyX and I noticed that the LyX Michael> menu separator itself is drawn correctly, i.e. the polygon is Michael> drawn correctly and does not exceed the clip box. You can Michael> check this by adding a menu separator to an empty document or Michael> at the end of a document. It seems to me that Angus has posted screenshots showing a badly drawn menu separator, but I may be dreaming (one of the standard docs, maybe). Michael> So there may be two possible reasons (please forgive me if I Michael> am telling non-sense; I am not a GUI expert). Michael> 1. The clip box itself is not set to the correct position. It might be. Michael> 2. QtFree/Win32 uses y coordinates in the wrong way because Michael> (just a guess!) X11 uses increasing y values from bottom to Michael> top whereas Win32 uses increasing y values from top to Michael> bottom. (Unfortunately, the menu separator symbol is Michael> symmetrical so we cannot exclude this alternative...) It would be much worse in this case. All the math decorations are made with polylines, and they are just translated vertically (according to a screenshot from Ruurd). JMarc
