[SOLVED] QSlider handle size after stylesheet
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Is it possible to get the size of the handle of a QSlider if a stylesheet changed it?
The following code seems only to work if nothing changed the handles size
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QStyleOptionSlider opt;
initStyleOption(&opt);
QRect handle = style()->subControlRect(QStyle::CC_Slider, &opt, QStyle::SC_SliderHandle);
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Hi,
You could parse the stylesheet for that information
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[quote author="butterface" date="1389193865"]
The following code seems only to work if nothing changed the handles size
[/quote]
why doesn't this code work for you?
How does the output differ from what you expect?
How does your stylesheet look like? -
I don't know why.
The output gives me a width of the handle of 15 but it should be 18.
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QSlider::handle:horizontal {
background: qlineargradient(x1:0, y1:0, x2:1, y2:1, stop:0 #b4b4b4, stop:1 #8f8f8f);
border: 1px solid #0c457e;
width: 18px;
margin: -2px 0;
border-radius: 3px;
}
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@SGaist Of course this would be an option but I would prefer to ask the slider itself for its handle size.
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seems that setting the handle size via stylesheet style isn't possible at all.
This is a fixed pixel metric (QStyle::PM_SliderLength) value in the platform styles (at least on Windows). -
That is not correct. width changes the size of the handle.
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correct, my fault.
I've just tested the style definition you posted, and this isn't working as it is (only when you also style the slider's groove i think)To come back to your problem:
Your code is almost correct. Just keep in mind that every time you call QStyle methods and an optional QWidget parameter is available you need to pass it:
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QStyleOptionSlider opt;
initStyleOption(&opt);
QRect handle = style()->subControlRect(QStyle::CC_Slider, &opt, QStyle::SC_SliderHandle, this);
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This will work. -
I should have posted the whole slider style.
The this indeed fixed the problem. Thanks!
