def color_from_string(string, alpha):
xs = string.strip()
regex = QRegExp(REGEX_QCOLOR)
match = regex.exactMatch(xs)
if match:
return QColor(xs)
regex = QRegExp(REGEX_FN_RGB)
match = regex.exactMatch(xs)
if match:
captured_texts = regex.capturedTexts()
return QColor(int(captured_texts[-3]), int(captured_texts[-2]), int(captured_texts[-1]))
if alpha:
regex = QRegExp(REGEX_HEX_RGBA)
match = regex.exactMatch(xs)
if match:
return QColor(_HEXDEC[xs[1:3]], _HEXDEC[xs[3:5]], _HEXDEC[xs[5:7]], _HEXDEC[xs[7:9]])
regex = QRegExp(REGEX_FN_RGBA)
match = regex.exactMatch(xs)
if match:
captured_texts = regex.capturedTexts()
return QColor(
int(captured_texts[-4]), int(captured_texts[-3]), int(captured_texts[-2]), int(captured_texts[-1]))
return QColor()
def string_is_hex(color_str):
"""
Returns whether or not given string is a valid hexadecimal color
:param color_str: str
:return: bool
"""
if color_str.startswith('#'):
color_str = color_str[1:]
hex_regex1 = QRegExp('^[0-9A-F]{3}$', Qt.CaseInsensitive)
hex_regex2 = QRegExp('^[0-9A-F]{6}$', Qt.CaseInsensitive)
hex_regex3 = QRegExp('^[0-9A-F]{8}$', Qt.CaseInsensitive)
if hex_regex1.exactMatch(color_str) or hex_regex2.exactMatch(color_str) or hex_regex3.exactMatch(color_str):
return True
return False