QTextEdit: textBackgroundColor returns black if white

Fire Cube

Hello Guys

I want to get the background color of the selected text.
This works good most of the time. But if the background color is white, it returns black.
Black stays black. All the other colors works.

Can you help me please?

SGaist

Hi,

Please provide:

Version of PySide/PyQt
Version of Python
Method of installation
OS your are running
Minimal script that reproduce that behaviour

Fire Cube

PySide6 installed by pip
Pyside6 version: 6.4.1
Python version: 3.11.0
OS: Windows 11

Reproducer:

from PySide6.QtWidgets import QApplication, QMainWindow, QTextEdit
from PySide6.QtCore import QRect
import sys

class MainWindow(QMainWindow):
    def __init__(self):
        super().__init__()

        self.text_entry = QTextEdit(self)

        self.text_entry.setGeometry(QRect(0, 0, 917, 670))
        self.text_entry.setHtml("<!DOCTYPE HTML PUBLIC \"-//W3C//DTD HTML 4.0//EN\" \"http://www.w3.org/TR/REC-html40/strict.dtd\">\n<html><head><meta name=\"qrichtext\" content=\"1\" /><meta charset=\"utf-8\" /><style type=\"text/css\">\np, li { white-space: pre-wrap; }\nhr { height: 1px; border-width: 0; }\nli.unchecked::marker { content: \"\\2610\"; }\nli.checked::marker { content: \"\\2612\"; }\n</style></head><body style=\" font-family:'Segoe UI'; font-size:9pt; font-weight:400; font-style:normal;\">\n<p style=\" margin-top:0px; margin-bottom:0px; margin-left:0px; margin-right:0px; -qt-block-indent:0; text-indent:0px;\"><span style=\" font-family:'MS Sans Serif'; color:#ffffff; background-color:#000000;\">I'm black</span></p>\n<p style=\" margin-top:0px; margin-bottom:0px; margin-left:0px; margin-right:0px; -qt-block-indent:0; text-indent:0px;\"><span style=\" font-family:'MS Sans Serif';\">I'm white</span></p>\n<p style=\" margin-top:0px; margin-bottom:0px; margin-left:0px; margin-right:0px; -qt-block-indent:0; text-indent:0px;\"><span style=\" font-family:'MS Sans Serif'; color:#6cdfff; background-color:#ff8649;\">I'm colorful</span></p></body></html>")
        self.text_entry.selectionChanged.connect(self.on_selection_changed)

    def on_selection_changed(self):
        print(self.text_entry.textBackgroundColor().name())

app = QApplication(sys.argv)

window = MainWindow()
window.show()

sys.exit(app.exec())

Fire Cube

I tried again, but still couldn't find a solution.
I imagine this is a bug.

Ard_Flamingo

It's not a bug, you've actually never set the color or the background color for the white button. I've updated your code to add the background color and the color for the white button:

from PySide6.QtWidgets import QApplication, QMainWindow, QTextEdit
from PySide6.QtCore import QRect
import sys

class MainWindow(QMainWindow):
    def __init__(self):
        super().__init__()

        self.text_entry = QTextEdit(self)

        self.text_entry.setGeometry(QRect(0, 0, 917, 670))
        self.text_entry.setHtml("<!DOCTYPE HTML PUBLIC \"-//W3C//DTD HTML 4.0//EN\" \"http://www.w3.org/TR/REC-html40/strict.dtd\">\n<html><head><meta name=\"qrichtext\" content=\"1\" /><meta charset=\"utf-8\" /><style type=\"text/css\">\np, li { white-space: pre-wrap; }\nhr { height: 1px; border-width: 0; }\nli.unchecked::marker { content: \"\\2610\"; }\nli.checked::marker { content: \"\\2612\"; }\n</style></head><body style=\" font-family:'Segoe UI'; font-size:9pt; font-weight:400; font-style:normal;\">\n<p style=\" margin-top:0px; margin-bottom:0px; margin-left:0px; margin-right:0px; -qt-block-indent:0; text-indent:0px;\"><span style=\" font-family:'MS Sans Serif'; color:#ffffff; background-color:#000000;\">I'm black</span></p>\n<p style=\" margin-top:0px; margin-bottom:0px; margin-left:0px; margin-right:0px; -qt-block-indent:0; text-indent:0px;\"><span style=\" font-family:'MS Sans Serif'; color:#000000; background-color:#ffffff;\">I'm white</span></p>\n<p style=\" margin-top:0px; margin-bottom:0px; margin-left:0px; margin-right:0px; -qt-block-indent:0; text-indent:0px;\"><span style=\" font-family:'MS Sans Serif'; color:#6cdfff; background-color:#ff8649;\">I'm colorful</span></p></body></html>")
        self.text_entry.selectionChanged.connect(self.on_selection_changed)

    def on_selection_changed(self):
        print(self.text_entry.textBackgroundColor().name())

app = QApplication(sys.argv)

window = MainWindow()
window.show()

sys.exit(app.exec())

This updated code works perfectly on my end.

In case you're wondering what I've done, I've just added:

color:#000000; background-color:#ffffff;

Before the code:

\">I'm white</span></p>\n<p style=\