ScanSlicer/scanslicer/ui_builders_shared.py

import base64

from PySide6.QtCore import QPoint, QRect, Qt
from PySide6.QtGui import QFont, QFontInfo, QIcon, QPainter, QPixmap
from PySide6.QtSvg import QSvgRenderer
from PySide6.QtWidgets import (
    QComboBox,
    QGridLayout,
    QGroupBox,
    QHBoxLayout,
    QLabel,
    QPushButton,
    QScrollArea,
    QSizePolicy,
    QSlider,
    QSpacerItem,
    QVBoxLayout,
    QWidget,
)


# _icon_color_from_palette: function definition for ScanSlicer behavior.
def _icon_color_from_palette(palette):
    if palette is None:
        return "#f2f2f2"

    button_text_color = palette.buttonText().color()
    if button_text_color.isValid():
        return button_text_color.name()

    window_color = palette.window().color()
    luma = (
        (0.2126 * window_color.redF())
        + (0.7152 * window_color.greenF())
        + (0.0722 * window_color.blueF())
    )
    return "#1f1f1f" if luma >= 0.5 else "#f2f2f2"