On Tue, Dec 18, 2018 at 2:35 PM kiteh <[email protected]> wrote:
> I am trying to create a rounded QPushButton in pythonic format.
>
> Read some solutions which are in C++ and while trying to convert them in
> Python terms, it does not seems to be working.
>
> btn = QtGui.QPushButton()
> btn.setAttribute(QtCore.Qt.WA_TranslucentBackground)
> btn.setStyleSheet(
> "border: 1px solid black;"
> "border-radius: 150px;"
> "color: lightGray; "
> "font-size: 35px;"
> )
>
> There are indeed some changes effected on the button but I am still seeing
> sharp edges (squarish).
>
> Wondering if anyone has attempt this?
>
> P.S - If possible, I would not want to create a class just for the sake of
> creating a circular button
>
The 'border-radius' value is going to be relative to the size of the
button, so if you set it too high (as you do in this example), it ends up
just drawing a square. You will notice that if you resize the button in
different dimensions it can end up drawing rounded corners. But overall I
would say using 'border-radius' is not going to be a good way to achieve a
completely circular button. I can think of a number of different ways to
accomplish this goal:
1. Custom QAbstractButton class with a paintEvent that draws a circle
2. A QPushbutton with a stylesheet using "border-image:
url("/path/to/image.png") 0 0 0 0 stretch stretch;", although this looks
kind of awful with the aliasing on the drawing
3. Flat QPushButton with an icon that has a pre-made circle graphic
I can give an example of option 3:
# This could either be a file on disk,
# or a :/resource/file.png
# or you could use QPixmap and QPainter to draw the graphic dynamically
ico = QtGui.QIcon("/path/to/circle.png")
btn = QtGui.QPushButton()
btn.setIcon(btn)
btn.setFixedSize(64, 64)
btn.setIconSize(btn.size())
btn.setFlat(True)
btn.setStyleSheet("""
border: 0;
color: lightGray;
font-size: 35px;
""")
This will give you a button that has an icon set to the same size as the
fixed size. Icons won't automatically scale unless you create a sub-class,
so you have to go with just a fixed button size.
Justin
>
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