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Adam D. Ruppe 2022-08-06 10:38:57 -04:00
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simpledisplay.d
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@ -1770,7 +1770,7 @@ class SimpleWindow : CapableOfHandlingNativeEvent, CapableOfBeingDrawnUpon {
} }
/++ /++
Returns the actual physical DPI for the window on its current display monitor. If the window Returns the actual logical DPI for the window on its current display monitor. If the window
straddles monitors, it will return the value of one or the other in a platform-defined manner. straddles monitors, it will return the value of one or the other in a platform-defined manner.
Please note this function may return zero if it doesn't know the answer! Please note this function may return zero if it doesn't know the answer!
@ -1790,8 +1790,20 @@ class SimpleWindow : CapableOfHandlingNativeEvent, CapableOfBeingDrawnUpon {
History: History:
Added November 26, 2021 (dub v10.4) Added November 26, 2021 (dub v10.4)
It said "physical dpi" in the description prior to July 29, 2022, but the behavior was
always a logical value on Windows and usually one on Linux too, so now the docs reflect
that.
Bugs: Bugs:
Probably plenty. I haven't done a lot of tests on this. I know it doesn't Probably plenty. I haven't done a lot of tests on this. I know it doesn't automatically
just work on linux; you need to set ARSD_SCALING_FACTOR as an environment variable to
set it. Set ARSD_SCALING_FACTOR=1;1.5 for example to set it to 1x on the primary monitor
and 1.5 on the secondary monitor.
The local dpi is not necessarily related to the physical dpi of the monitor. The name
is a historical misnomer - the real thing of interest is the scale factor and due to
compatibility concerns the scale would modify dpi values to trick applications. But since
that's the terminology common out there, I used it too.
See_Also: See_Also:
[getDpi] gives the value provided for the default monitor. Not necessarily the same [getDpi] gives the value provided for the default monitor. Not necessarily the same