On Jan 4, 2012, at 9:13 PM, Jerry wrote: > > On Jan 4, 2012, at 3:03 PM, Stephan Witt wrote: > >> I've prepared a LyX-package with Qt-4.8.0 and the upload is here: >> >> http://dl.dropbox.com/u/27842660/LyX-2.1.0svn%2Bqt4.8.0-cocoa.dmg >> http://dl.dropbox.com/u/27842660/LyX-2.1.0svn%2Bqt4.8.0-cocoa.dmg.sig >> >> The Qt 4.8.0 ChangeLog contains this: >> >> Qt for Mac OS X >> --------------- >> - Alien widgets is now used by default for Qt/Cocoa on Mac OS X. >> - Qt/Cocoa on Mac OS X has now full support for the raster paint engine. >> - QApplication has now implemented macEventFilter for Qt/Cocoa >> - HarfBuzz can now be used as an optional text layout engine on Mac OS X. >> [QTBUG-17728] >> - Qt shows some love to OS X Lion (10.7). >> >> Perhaps this is an improvement on Lion? Please, can someone give it a try? >> >> Stephan > > 10.6.8, 2.1svn > Scrolling User's Guide takes 13 seconds. > No misplaced cursor. > > This scroll rate is between what I measured for 2.0.0 and 2.0.2 using the > special preference file line. > > Subjectively, for me, the somewhat slower difference for 2.1svn puts the > experience back into "painful" regime, but it is still better than 2.0.2 > without the special preference file line. > > Jerry
After adding \force_paint_single_char false to the preferences file for 2.1svn: Scrolling User's Guide takes 9 seconds on first pass, 7-8 seconds for subsequent passes. The cursor is misplaced on long line of m's. Another artifact with these conditions appears: when click-dragging over text to select it, _some_ letters at and to the right of the position of the cursor will jump a few pixels left and right as the cursor passes over them. Doing this over a long line of m's is especially fun. It's as though characters under the selection color are being drawn with a different metric than the ones that have not been selected yet. Normal scrolling (trackpad, thumb bar) is noticeably better than any of the other results I have reported. But the cursor problem is present now. Jerry
