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| author | Tor Lillqvist <tml@collabora.com> | 2015-03-23 15:25:31 +0200 |
|---|---|---|
| committer | Tor Lillqvist <tml@collabora.com> | 2015-03-23 15:50:15 +0200 |
| commit | 4be86e71d607715dd602838f49aa19f478662147 (patch) | |
| tree | 06cd657b4d42e4b8119777e96e4df52711ddfbff /vcl | |
| parent | 772d8c5a2b46d7feca348723090e39aa235d05e0 (diff) | |
Add comment about the DPI calculation
Change-Id: I791904a50db75ed94c166b0f84d9f08cb088bafe
Diffstat (limited to 'vcl')
| -rw-r--r-- | vcl/quartz/salgdicommon.cxx | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/vcl/quartz/salgdicommon.cxx b/vcl/quartz/salgdicommon.cxx index febf2fdc569a..f193122f6243 100644 --- a/vcl/quartz/salgdicommon.cxx +++ b/vcl/quartz/salgdicommon.cxx @@ -1736,6 +1736,13 @@ void AquaSalGraphics::initResolution( NSWindow* ) { mnRealDPIX = mnRealDPIY = nMinDPI; } + // Note that on a Retina display, the "mnRealDPIX" as + // calculated above is not the true resolution of the display, + // but the "logical" one, or whatever the correct terminology + // is. (For instance on a 5K 27in iMac, it's 108.) So at + // least currently, it won't be over 200. I don't know whether + // this test is a "sanity check", or whether there is some + // real reason to limit this to 200. static const int nMaxDPI = 200; if( (mnRealDPIX > nMaxDPI) || (mnRealDPIY > nMaxDPI) ) { |