Hello,
LyX has been lacking HiDPI ("retina") support for a while now and I
decided to tackle this project. It has been listed as a GSoC 2013
potential project [1], so I assume there's enough interest in it.I worked on a patch which adds basic 2x DPI drawing support for text and graphics. Math formulas and inline images also work (except the splash screen) but the UI icons would require creating higher res versions. Comparison (LyX 2.1.0 with Qt4 vs LyX git with Qt5): https://dl.dropboxusercontent.com/u/20456192/standard.png https://dl.dropboxusercontent.com/u/20456192/retina.png Qt added HiDPI support in version 5 [2], but I think it's not yet fully functional. I say this because I ran into a problem where partial viewport updates (namely the cursor and preedit strings) are rendered incorrectly. It seems that it wrongly uses non-scaled pixels dimensions which displays viewport contents from half the requested coordinates, but I'm not sure it is a Qt bug. To workaround this (second patch) I used full viewport updates only, but this can degrade performance. I would appreciate some help on this issue as I'm not experienced with Qt. I haven't tested this on Linux or Windows but to compile for Qt 5 on OS X I used some additional steps from [3]. I am also new to LyX development and I am willing to improve this patch, so any feedback will be welcome. [1] http://wiki.lyx.org/Devel/SummerOfCode2013Ideas [2] http://blog.qt.digia.com/blog/2013/04/25/retina-display-support-for-mac-os-ios-and-x11/ [3] http://permalink.gmane.org/gmane.editors.lyx.devel/148577 Thanks, Marcelo
0001-Add-basic-qt5-HiDPI-rendering-support.patch
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0002-Use-full-viewport-updates-as-a-workaround-for.patch
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