[FIXED] How would I set a specific color role's color of a QPalette to that of another QPalette's color role's color in PyQT5?

Issue

What I have on hand are two widgets, one of which's bg color I'd like to be set as the text color of the other. After going through the docs, I couldn't find any method that'd yield me the color of a specific color role from a palette.

The closest method in terms of relevancy simply returns a QBrush QPalette.colorRole, which I don't see as to how it can help here.

Say I had something of the form

widget1 = QWidget()
palette1 = widget1.palette()
palette1.setColor(QPalette.Text, QColor('#FFAABBCC'))
widget1.setPalette(palette1)

widget2 = QWigdet()
palette2 = widget2.palette()
palette2.setColor(widget1s text color) #assume this is what the command tries to do

I'd like for a way to set palette2's QPalette.Base color role for instance, to be set to the same color as palette1's QPalette.Text role. How would I go about doing this?

Solution

While QPalette accepts QColors, its roles are all based on QBrush; unless the brush uses a gradient or an image, the brush color() will return a valid QColor.

Setting the color of another role is as simple as setColor(role, color).

Since you are already using palettes, it's not necessary to pass through the color, and you can just assign the original brush with setBrush(role, brush):

widget1 = QWidget()
palette1 = widget1.palette()
palette1.setColor(QPalette.Text, QColor('#FFAABBCC'))
widget1.setPalette(palette1)

widget2 = QWigdet()
palette2 = widget2.palette()
palette2.setBrush(QPalette.Base, palette1.brush(QPalette.Text))
# alternatively
palette2.setBrush(QPalette.Base, palette1.text())

widget2.setPalette(palette2)

The direct getter functions (like text() or window()) always return a QBrush and they are shortcuts to brush(role) for the current color group. Whenever you need to specify different color groups, you have to use the appropriate brush()/color() and setBrush()/setColor() functions that accept the group, otherwise use setCurrentColorGroup() before that if you need multiple calls on the same group.

Answered By - musicamante