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Don't use gdk_screen_xxx_mm() with multiple displays

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These functions combine the sizes of all displays and so only return the
correct size when there is only a single display.

This fixes wildly wrong PPI values returned when more than one display
is used.
This commit is contained in:
Vadim Zeitlin
2018-10-29 17:50:56 +01:00
parent f09b9dbfa2
commit 1938adb5dc
1 changed files with 1 additions and 1 deletions
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2
src/gtk/display.cpp
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@@ -317,7 +317,7 @@ wxSize wxDisplayImplGTK::GetSizeMM() const
// At least in some configurations, gdk_screen_xxx_mm() functions return // At least in some configurations, gdk_screen_xxx_mm() functions return
// valid values when gdk_screen_get_monitor_xxx_mm() only return -1, so // valid values when gdk_screen_get_monitor_xxx_mm() only return -1, so
// handle this case specially. // handle this case specially.
if ( IsPrimary() ) if ( gdk_screen_get_n_monitors(m_screen) == 1 )
{ {
return wxSize(gdk_screen_width_mm(), gdk_screen_height_mm()); return wxSize(gdk_screen_width_mm(), gdk_screen_height_mm());
} }