Long story short, I’m switching my Ubuntu Studio 22.04 desktop away from KDE Plasma and back to the Xfce4 desktop that they used to ship (in hopes that it will be more stable on this machine).
One strange thing, though.
I use a dark theme. In Plasma, SC’s Slider appears with a dark-colored background by default. But in Xfce4, it’s much lighter, for no reason that I can determine.
z = Slider(nil, Rect(800, 200, 100, 20)).front;
z.background;
-> Color(0.78039215686275, 0.78039215686275, 0.78039215686275)
z.background.red * 255
-> 199
199, or c7c7c7, is very much on the light end of the spectrum. Compare to the window color QtGUI.palette.color(\window) = Color(0.29803921568627, 0.29803921568627, 0.29803921568627).
In my performance GUI, I can handle it by specifying a background rather than relying on the default. But it also leaves me wondering… where is the color coming from? If I query QtGUI.palette, there is no color that’s even close to this.
p = QtGUI.palette;
#[window, windowText, button, buttonText, brightText, base, baseText, alternateBase, toolTipBase, toolTipText, highlight, highlightText, link, linkVisited].do { |role|
[role, p.color(role)].postln;
}; ""
[ window, Color(0.29803921568627, 0.29803921568627, 0.29803921568627) ]
[ windowText, Color(1.0, 1.0, 1.0) ]
[ button, Color(0.42745098039216, 0.42745098039216, 0.42745098039216) ]
[ buttonText, Color(1.0, 1.0, 1.0) ]
[ brightText, Color(1.0, 1.0, 1.0) ]
[ base, Color(0.17647058823529, 0.17647058823529, 0.17647058823529) ]
[ baseText, Color(1.0, 1.0, 1.0) ]
[ alternateBase, Color(0.21176470588235, 0.21176470588235, 0.21176470588235) ]
[ toolTipBase, Color(1.0, 1.0, 0.86274509803922) ]
[ toolTipText, Color() ]
[ highlight, Color(0.24705882352941, 0.36862745098039, 0.56862745098039) ]
[ highlightText, Color(1.0, 1.0, 1.0) ]
[ link, Color(0.0, 0.0, 1.0) ]
[ linkVisited, Color(1.0, 0.0, 1.0) ]
I also searched the gtk theme css – no mention of 199 or c7.
It must be defined somewhere… which I would really like to know, so I can fix it.
hjh