278 lines
8.0 KiB
Python
278 lines
8.0 KiB
Python
#!/usr/bin/env python
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# -*- coding: utf-8 -*-
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"""Utilities for compiling SASS files."""
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# Standard library imports
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import keyword
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import logging
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import os
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import re
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import shutil
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import sys
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# Third party imports
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import qtsass
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# Local imports
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from qdarkstyle import (MAIN_SCSS_FILE, MAIN_SCSS_FILEPATH, QSS_PATH,
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QSS_FILEPATH, RC_PATH, QSS_FILE,
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VARIABLES_SCSS_FILE, VARIABLES_SCSS_FILEPATH)
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from qdarkstyle.palette import DarkPalette
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from qdarkstyle.utils.images import create_images, create_palette_image
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# Constants
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PY2 = sys.version[0] == '2'
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HEADER_SCSS = '''// ---------------------------------------------------------------------------
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//
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// File created programmatically
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//
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// The definitions are in the "qdarkstyle.palette" module
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//
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// WARNING! All changes made in this file will be lost!
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//
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//----------------------------------------------------------------------------
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'''
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HEADER_QSS = '''/* ---------------------------------------------------------------------------
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Created by the qtsass compiler v{}
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The definitions are in the "qdarkstyle.qss._styles.scss" module
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WARNING! All changes made in this file will be lost!
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--------------------------------------------------------------------------- */
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'''
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_logger = logging.getLogger(__name__)
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def _dict_to_scss(data):
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"""Create a scss variables string from a dict."""
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lines = []
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template = "${}: {};"
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for key, value in data.items():
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line = template.format(key, value)
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lines.append(line)
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return '\n'.join(lines)
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def _scss_to_dict(string):
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"""Parse variables and return a dict."""
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data = {}
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lines = string.split('\n')
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for line in lines:
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line = line.strip()
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if line and line.startswith('$'):
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key, value = line.split(':')
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key = key[1:].strip()
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key = key.replace('-', '_')
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value = value.split(';')[0].strip()
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data[key] = value
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return data
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def _create_scss_variables(variables_scss_filepath, palette,
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header=HEADER_SCSS):
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"""Create a scss variables file."""
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scss = _dict_to_scss(palette.to_dict())
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data = header + scss + '\n'
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with open(variables_scss_filepath, 'w') as f:
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f.write(data)
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def _create_qss(main_scss_path, qss_filepath, header=HEADER_QSS):
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"""Create a styles.qss file from qtsass."""
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data = ''
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qtsass.compile_filename(main_scss_path, qss_filepath,
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output_style='expanded')
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with open(qss_filepath, 'r') as f:
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data = f.read()
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data = header.format(qtsass.__version__) + data
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with open(qss_filepath, 'w') as f:
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f.write(data)
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return data
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def create_qss(qss_filepath=QSS_FILEPATH, main_scss_filepath=MAIN_SCSS_FILEPATH,
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variables_scss_filepath=VARIABLES_SCSS_FILEPATH,
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palette=DarkPalette):
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"""Create variables files and run qtsass compilation."""
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_create_scss_variables(variables_scss_filepath, palette)
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stylesheet = _create_qss(main_scss_filepath, qss_filepath)
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return stylesheet
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def is_identifier(name):
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"""Check that `name` string is a valid identifier in Python."""
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if PY2:
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is_not_keyword = name not in keyword.kwlist
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pattern = re.compile(r'^[a-z_][a-z0-9_]*$', re.I)
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matches_pattern = bool(pattern.match(name))
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check = is_not_keyword and matches_pattern
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else:
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check = name.isidentifier()
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return check
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def create_custom_qss(
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name,
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path,
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color_background_light,
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color_background_normal,
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color_background_dark,
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color_foreground_light,
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color_foreground_normal,
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color_foreground_dark,
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color_selection_light,
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color_selection_normal,
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color_selection_dark,
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border_radius,
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):
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"""
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Create a custom palette based on the parameters defined.
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The `name` must be a valid Python identifier and will be stored
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as a lowercased folder (even if the identifier had uppercase letters).
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This fuction returns the custom stylesheet pointing to resources stored at
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.../path/name/.
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"""
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stylesheet = ''
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# Check if name is valid
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if is_identifier(name):
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name = name if name[0].isupper() else name.capitalize()
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else:
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raise Exception('The custom palette name must be a valid Python '
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'identifier!')
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# Copy resources folder
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rc_loc = os.path.basename(RC_PATH)
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qss_loc = os.path.basename(QSS_PATH)
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theme_root_path = os.path.join(path, name.lower())
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theme_rc_path = os.path.join(theme_root_path, rc_loc)
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if os.path.isdir(theme_root_path):
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shutil.rmtree(theme_root_path)
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shutil.copytree(RC_PATH, theme_rc_path)
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# Copy QSS folder and contents
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theme_qss_path = os.path.join(theme_root_path, qss_loc)
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if os.path.isdir(theme_qss_path):
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os.removedirs(theme_qss_path)
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shutil.copytree(QSS_PATH, theme_qss_path)
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# Create custom palette
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custom_palette = type(name, (DarkPalette, ), {})
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custom_palette.COLOR_BACKGROUND_LIGHT = color_background_light
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custom_palette.COLOR_BACKGROUND_NORMAL = color_background_normal
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custom_palette.COLOR_BACKGROUND_DARK = color_background_dark
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custom_palette.COLOR_FOREGROUND_LIGHT = color_foreground_light
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custom_palette.COLOR_FOREGROUND_NORMAL = color_foreground_normal
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custom_palette.COLOR_FOREGROUND_DARK = color_foreground_dark
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custom_palette.COLOR_SELECTION_LIGHT = color_selection_light
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custom_palette.COLOR_SELECTION_NORMAL = color_selection_normal
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custom_palette.COLOR_SELECTION_DARK = color_selection_dark
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custom_palette.SIZE_BORDER_RADIUS = border_radius
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custom_palette.PATH_RESOURCES = "'{}'".format(theme_root_path)
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# Process images and save them to the custom platte rc folder
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create_images(rc_path=theme_rc_path, palette=custom_palette)
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create_palette_image(path=theme_root_path, palette=custom_palette)
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# Compile SCSS
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variables_scss_filepath = os.path.join(theme_qss_path, VARIABLES_SCSS_FILE)
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theme_main_scss_filepath = os.path.join(theme_qss_path, MAIN_SCSS_FILE)
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theme_qss_filepath = os.path.join(theme_root_path, QSS_FILE)
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stylesheet = create_qss(
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qss_filepath=theme_qss_filepath,
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main_scss_filepath=theme_main_scss_filepath,
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variables_scss_filepath=variables_scss_filepath,
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palette=custom_palette,
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)
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# Update colors in text
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with open(theme_main_scss_filepath, 'r') as fh:
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data = fh.read()
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for key, color in DarkPalette.color_palette().items():
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custom_color = custom_palette.color_palette()[key].upper()
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data = data.replace(color, custom_color)
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stylesheet = stylesheet.replace(color, custom_color)
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with open(theme_main_scss_filepath, 'w') as fh:
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fh.write(data)
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with open(theme_qss_filepath, 'w') as fh:
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fh.write(stylesheet)
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return stylesheet
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def create_custom_qss_from_palette(name, path, palette):
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"""
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Create a custom palette based on a palette class.
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"""
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kwargs = {
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'name': name,
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'path': path,
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'border_radius': palette.SIZE_BORDER_RADIUS,
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}
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kwargs.update(palette.color_palette())
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stylesheet = create_custom_qss(**kwargs)
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return stylesheet
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def create_custom_qss_from_dict(name, path, palette_dict):
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"""
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Create a custom palette based on a palette dictionary.
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"""
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kwargs = {
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'name': name,
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'path': path,
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'border_radius': palette_dict.get('SIZE_BORDER_RADIUS', '4px'),
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}
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kwargs.update(palette_dict)
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stylesheet = create_custom_qss(**kwargs)
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return stylesheet
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if __name__ == '__main__':
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# Example of a custom palette
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# TODO: change to not use a specfic path
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# TODO: may move to other place, e.g., example.py
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qss = create_custom_qss(
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'MyAwesomePalette',
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'/Users/gpena-castellanos/Desktop',
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'#ff0000',
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'#cc0000',
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'#aa0000',
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'#00ff00',
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'#00cc00',
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'#00aa00',
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'#0000ff',
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'#0000cc',
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'#0000aa',
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'0px',
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)
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