Function get_background_css

pyxrf/gui_module/useful_widgets.py:369–388

Returns the string that contain CSS to set widget background to specified color

(rgb, widget="QWidget", editable=False)

def get_background_css(rgb, widget="QWidget", editable=False):
    """Returns the string that contain CSS to set widget background to specified color"""

    rgb = tuple(rgb)
    if len(rgb) != 3:
        raise ValueError(r"RGB must be represented by 3 elements: rgb = {rgb}")
    if any([(_ > 255) or (_ < 0) for _ in rgb]):
        raise ValueError(r"RGB values must be in the range 0..255: rgb={rgb}")

    # Shaded widgets appear brighter, so the brightness needs to be reduced
    shaded_widgets = ("QComboBox", "QPushButton")
    if widget in shaded_widgets:
        rgb = [max(int(255 - (255 - _) * 1.5), 0) for _ in rgb]

    # Increase brightness of editable element
    if editable:
        rgb = [255 - int((255 - _) * 0.5) for _ in rgb]

    color_css = f"rgb({rgb[0]}, {rgb[1]}, {rgb[2]})"
    return f"{widget} {{ background-color: {color_css}; }}"


class IntValidatorStrict(QIntValidator):