Am Montag, 6. Juli 2015, 11:22:01 schrieb Patrick Shanahan: > * Tobias Ellinghaus <h...@gmx.de> [07-06-15 11:00]: > > Am Sonntag, 5. Juli 2015, 12:12:38 schrieb darkta...@911networks.com: > > > On Sun, 5 Jul 2015 13:35:43 -0500 > > [...] > > > > What I did and it helped a little bit was set: > > > > > > screen_dpi_overwrite=-2.0 in ~/.config/darktable/darktablerc/darktablerc > > > > That shouldn't have any effect at all, everything <= 0.0 is ignored. > > default provided: screen_dpi_overwrite=-1.0 > screen_ppd_overwrite=-1.0 > > What is the range and intent to these two settings?
The intent is – as the name suggests – to set the DPI and PPD of the screen to something else than reported by the system (for example as set by xrandr). DPI specify how many logical dots there are per inch, it defaults to 96 if no other value can be found. You can scale up the whole GUI by setting it to something bigger than what your screen actually is. The PPD setting is used to scale from logical dots to real screen pixels. In general that is a 1:1 mapping, however, on some HiDPI screens (mostly Retina on OSX, IIRC) that can be different. To see what values darktable uses you can run darktable -d control | grep "^\[screen resolution\]" for DPI and darktable -d control | grep "^\[HiDPI\]" for PPD. Should the latter give no output it means that PPD = 1.0. Setting any of the two to a negative number means using the system settings. For many config settings you can see some info in the generated file share/doc/darktable/darktablerc.html > tks, Tobias
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