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# -*- coding: utf-8 -*- |
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# ----------------------------------------------------------------------------- |
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# Copyright (c) 2015 Yann Lanthony |
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# Copyright (c) 2017-2018 Spyder Project Contributors |
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# |
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# Licensed under the terms of the MIT License |
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# (See LICENSE.txt for details) |
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# ----------------------------------------------------------------------------- |
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"""Conform qss to compliant scss and css to valid qss.""" |
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# yapf: disable |
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from __future__ import absolute_import, print_function |
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# Standard library imports |
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import re |
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# yapf: enable |
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_DEFAULT_COORDS = ('x1', 'y1', 'x2', 'y2') |
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class Conformer(object): |
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"""Base class for all text transformations.""" |
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def to_scss(self, qss): |
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"""Transform some qss to valid scss.""" |
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return NotImplemented |
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def to_qss(self, css): |
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"""Transform some css to valid qss.""" |
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return NotImplemented |
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class NotConformer(Conformer): |
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"""Conform QSS "!" in selectors.""" |
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def to_scss(self, qss): |
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"""Replace "!" in selectors with "_qnot_".""" |
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return qss.replace(':!', ':_qnot_') |
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def to_qss(self, css): |
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"""Replace "_qnot_" in selectors with "!".""" |
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return css.replace(':_qnot_', ':!') |
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class QLinearGradientConformer(Conformer): |
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"""Conform QSS qlineargradient function.""" |
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qss_pattern = re.compile( |
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r'qlineargradient\(' |
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r'((?:(?:\s+)?(?:x1|y1|x2|y2):(?:\s+)?[0-9A-Za-z$_\.-]+,?)+)' # coords |
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r'((?:(?:\s+)?stop:.*,?)+(?:\s+)?)?' # stops |
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r'\)', |
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re.MULTILINE, |
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) |
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def _conform_coords_to_scss(self, group): |
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""" |
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Take a qss str with xy coords and returns the values. |
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'x1: 0, y1: 0, x2: 0, y2: 0' => '0, 0, 0, 0' |
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'y1: 1' => '0, 1, 0, 0' |
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""" |
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values = ['0', '0', '0', '0'] |
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for key_values in [part.split(':', 1) for part in group.split(',')]: |
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try: |
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key, value = key_values |
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key = key.strip() |
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if key in _DEFAULT_COORDS: |
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pos = _DEFAULT_COORDS.index(key) |
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if pos >= 0 and pos <= 3: |
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values[pos] = value.strip() |
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except ValueError: |
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pass |
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return ', '.join(values) |
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def _conform_stops_to_scss(self, group): |
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""" |
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Take a qss str with stops and returns the values. |
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'stop: 0 red, stop: 1 blue' => '0 red, 1 blue' |
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""" |
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new_group = [] |
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split = [""] |
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bracket_level = 0 |
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for char in group: |
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if not bracket_level and char == ",": |
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split.append("") |
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continue |
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elif char == "(": |
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bracket_level += 1 |
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elif char == ")": |
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bracket_level -= 1 |
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split[-1] += char |
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for part in split: |
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if part: |
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_, value = part.split(':', 1) |
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new_group.append(value.strip()) |
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return ', '.join(new_group) |
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def to_scss(self, qss): |
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""" |
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Conform qss qlineargradient to scss qlineargradient form. |
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Normalize all whitespace including the removal of newline chars. |
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qlineargradient(x1: 0, y1: 0, x2: 0, y2: 0, stop: 0 red, stop: 1 blue) |
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=> |
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qlineargradient(0, 0, 0, 0, (0 red, 1 blue)) |
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""" |
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conformed = qss |
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for coords, stops in self.qss_pattern.findall(qss): |
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new_coords = self._conform_coords_to_scss(coords) |
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conformed = conformed.replace(coords, new_coords, 1) |
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if not stops: |
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continue |
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new_stops = ', ({})'.format(self._conform_stops_to_scss(stops)) |
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conformed = conformed.replace(stops, new_stops, 1) |
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return conformed |
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def to_qss(self, css): |
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"""Transform to qss from css.""" |
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return css |
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conformers = [c() for c in Conformer.__subclasses__() if c is not Conformer] |
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def scss_conform(input_str): |
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""" |
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Conform qss to valid scss. |
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Runs the to_scss method of all Conformer subclasses on the input_str. |
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Conformers are run in order of definition. |
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:param input_str: QSS string |
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:returns: Valid SCSS string |
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""" |
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conformed = input_str |
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for conformer in conformers: |
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conformed = conformer.to_scss(conformed) |
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return conformed |
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def qt_conform(input_str): |
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""" |
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Conform css to valid qss. |
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Runs the to_qss method of all Conformer subclasses on the input_str. |
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Conformers are run in reverse order. |
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:param input_str: CSS string |
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:returns: Valid QSS string |
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""" |
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conformed = input_str |
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for conformer in conformers[::-1]: |
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conformed = conformer.to_qss(conformed) |
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return conformed |
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spyder-ide /
qtsass
