eirikbakke commented on code in PR #5161:
URL: https://github.com/apache/netbeans/pull/5161#discussion_r1059181978
##########
nb/ide.launcher/unix/netbeans:
##########
@@ -222,8 +222,29 @@ case "`uname`" in
# information."
#
https://userbase.kde.org/KDE_System_Administration/Environment_Variables
if [ ! -z "$KDE_FULL_SESSION" ] ; then
- echo "Detected KDE; adding awt.useSystemAAFontSettings=on"
- extra_automatic_options="-J-Dawt.useSystemAAFontSettings=on"
+ # Try to detect the correct subpixel antialiasing mode
+ # (https://github.com/apache/netbeans/issues/4228)
+
+ # See https://docs.gtk.org/gtk4/property.Settings.gtk-xft-rgba.html
+ # See
https://docs.oracle.com/javase/7/docs/technotes/guides/2d/flags.html#aaFonts
+ case "`command xrdb -query 2> /dev/null | grep Xft.rgba | cut -d
':' -f2 | xargs`" in
+ rgb)
+
extra_automatic_options="-J-Dawt.useSystemAAFontSettings=lcd_hrgb"
+ ;;
+ bgr)
+
extra_automatic_options="-J-Dawt.useSystemAAFontSettings=lcd_hbgr"
+ ;;
+ vrgb)
+
extra_automatic_options="-J-Dawt.useSystemAAFontSettings=lcd_vrgb"
+ ;;
+ vbgr)
+
extra_automatic_options="-J-Dawt.useSystemAAFontSettings=lcd_vbgr"
+ ;;
+ *)
+
extra_automatic_options="-J-Dawt.useSystemAAFontSettings=on"
+ ;;
+ esac
+ echo "Detected KDE; use explicit setting for font antialiasing
($extra_automatic_options)"
Review Comment:
(I also did one more experiment just now, confirming that the JDK does _not_
by itself detect AA settings just because Xft.rgba is present. So I don't know
the exact conditions in which the JDK would be able to detect AA settings by
itself on KDE, other than NickLion's report from openSUSE Tumbleweed with KDE
Plasma.)
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