forked from openlp/openlp
259 lines
8.5 KiB
Python
259 lines
8.5 KiB
Python
# -*- coding: utf-8 -*-
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##########################################################################
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# OpenLP - Open Source Lyrics Projection #
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# ---------------------------------------------------------------------- #
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# Copyright (c) 2008-2021 OpenLP Developers #
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# ---------------------------------------------------------------------- #
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# This program is free software: you can redistribute it and/or modify #
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# it under the terms of the GNU General Public License as published by #
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# the Free Software Foundation, either version 3 of the License, or #
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# (at your option) any later version. #
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# #
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# This program is distributed in the hope that it will be useful, #
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# but WITHOUT ANY WARRANTY; without even the implied warranty of #
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the #
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# GNU General Public License for more details. #
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# #
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# You should have received a copy of the GNU General Public License #
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# along with this program. If not, see <https://www.gnu.org/licenses/>. #
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##########################################################################
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"""
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The :mod:`~openlp.core.ui.dark` module looks for and loads a dark theme
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"""
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from subprocess import Popen, PIPE
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from enum import Enum
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from PyQt5 import QtCore, QtGui, QtWidgets
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from openlp.core.common import is_macosx, is_win
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from openlp.core.common.registry import Registry
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try:
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import qdarkstyle
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HAS_DARK_THEME = True
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except ImportError:
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HAS_DARK_THEME = False
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WIN_REPAIR_STYLESHEET = """
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QMainWindow::separator
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{
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border: none;
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}
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QDockWidget::title
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{
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border: 1px solid palette(dark);
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padding-left: 5px;
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padding-top: 2px;
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margin: 1px 0;
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}
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QToolBar
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{
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border: none;
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margin: 0;
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padding: 0;
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}
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"""
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MEDIA_MANAGER_STYLE = """
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::tab#media_tool_box {
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background: qlineargradient(x1: 0, y1: 0, x2: 0, y2: 1,
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stop: 0 palette(button), stop: 1.0 palette(mid));
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border: 0;
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border-radius: 2px;
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margin-top: 0;
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margin-bottom: 0;
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text-align: left;
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}
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/* This is here to make the tabs on KDE with the Breeze theme work */
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::tab:selected {}
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"""
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PROGRESSBAR_STYLE = """
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QProgressBar{
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height: 10px;
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}
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"""
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class UiThemes(Enum):
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"""
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An enumeration for themes.
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"""
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Automatic = 'automatic'
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DefaultLight = 'light:default'
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DefaultDark = 'dark:default'
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QDarkStyle = 'dark:qdarkstyle'
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def is_ui_theme_dark():
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ui_theme_name = Registry().get('settings').value('advanced/ui_theme_name')
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if ui_theme_name == UiThemes.Automatic:
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return is_system_darkmode()
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else:
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return ui_theme_name.value.startswith('dark:')
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def is_ui_theme(ui_theme: UiThemes):
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ui_theme_name = Registry().get('settings').value('advanced/ui_theme_name')
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return ui_theme_name == ui_theme
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def init_ui_theme_if_needed(ui_theme_name):
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return not isinstance(ui_theme_name, UiThemes)
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def has_ui_theme(ui_theme: UiThemes):
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if ui_theme == UiThemes.QDarkStyle:
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return HAS_DARK_THEME
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return True
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IS_SYSTEM_DARKMODE = None
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def is_system_darkmode():
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global IS_SYSTEM_DARKMODE
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if IS_SYSTEM_DARKMODE is None:
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try:
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if is_win():
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IS_SYSTEM_DARKMODE = is_windows_darkmode()
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elif is_macosx():
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IS_SYSTEM_DARKMODE = is_macosx_darkmode()
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else:
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IS_SYSTEM_DARKMODE = False
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except Exception:
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IS_SYSTEM_DARKMODE = False
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return IS_SYSTEM_DARKMODE
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def is_windows_darkmode():
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"""
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Detects if Windows is using dark mode system theme.
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Source: https://github.com/olivierkes/manuskript/blob/731e017e9e0dd7e4062f1af419705c11b2825515/manuskript/main.py
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(GPL3)
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Changes:
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* Allowed palette to be set on any operating system;
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* Split Windows Dark Mode detection to another function.
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"""
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theme_settings = QtCore.QSettings('HKEY_CURRENT_USER\\Software\\Microsoft\\Windows\\CurrentVersion\\Themes'
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'\\Personalize',
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QtCore.QSettings.NativeFormat)
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return theme_settings.value('AppsUseLightTheme') == 0
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def is_macosx_darkmode():
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"""
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Detects if Mac OS X is using dark mode system theme.
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Source: https://stackoverflow.com/a/65357166 (CC BY-SA 4.0)
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Changes:
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* Using OpenLP formatting rules
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* Handling exceptions
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"""
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try:
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command = 'defaults read -g AppleInterfaceStyle'
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process = Popen(command, stdout=PIPE, stderr=PIPE, shell=True)
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stdin = process.communicate()[0]
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return bool(stdin)
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except Exception:
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return False
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def set_default_theme(app):
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"""
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Setup theme
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"""
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if is_ui_theme(UiThemes.DefaultDark) or (is_ui_theme(UiThemes.Automatic) and is_ui_theme_dark()):
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set_default_darkmode(app)
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elif is_ui_theme(UiThemes.DefaultLight):
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set_default_lightmode(app)
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def set_default_lightmode(app):
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"""
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Setup lightmode on the application if Default Lightt theme is enabled in the OpenLP Settings.
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"""
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app.setStyle('Fusion')
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app.setPalette(app.style().standardPalette())
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def set_default_darkmode(app):
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"""
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Setup darkmode on the application if enabled in the OpenLP Settings or using a dark mode system theme.
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Source:
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https://github.com/olivierkes/manuskript/blob/731e017e9e0dd7e4062f1af419705c11b2825515/manuskript/main.py
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(GPL3)
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Changes:
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* Allowed palette to be set on any operating system;
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* Split Windows Dark Mode detection to another function.
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"""
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app.setStyle('Fusion')
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dark_palette = QtGui.QPalette()
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dark_color = QtGui.QColor(45, 45, 45)
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disabled_color = QtGui.QColor(127, 127, 127)
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dark_palette.setColor(QtGui.QPalette.Window, dark_color)
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dark_palette.setColor(QtGui.QPalette.WindowText, QtCore.Qt.white)
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dark_palette.setColor(QtGui.QPalette.Disabled, QtGui.QPalette.WindowText, disabled_color)
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dark_palette.setColor(QtGui.QPalette.Base, QtGui.QColor(18, 18, 18))
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dark_palette.setColor(QtGui.QPalette.AlternateBase, dark_color)
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dark_palette.setColor(QtGui.QPalette.ToolTipBase, QtCore.Qt.white)
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dark_palette.setColor(QtGui.QPalette.ToolTipText, QtCore.Qt.black)
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dark_palette.setColor(QtGui.QPalette.Text, QtCore.Qt.white)
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dark_palette.setColor(QtGui.QPalette.Disabled, QtGui.QPalette.Text, disabled_color)
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dark_palette.setColor(QtGui.QPalette.Button, dark_color)
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dark_palette.setColor(QtGui.QPalette.ButtonText, QtCore.Qt.white)
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dark_palette.setColor(QtGui.QPalette.Disabled, QtGui.QPalette.ButtonText, disabled_color)
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dark_palette.setColor(QtGui.QPalette.BrightText, QtCore.Qt.red)
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dark_palette.setColor(QtGui.QPalette.Link, QtGui.QColor(42, 130, 218))
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dark_palette.setColor(QtGui.QPalette.Highlight, QtGui.QColor(42, 130, 218))
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dark_palette.setColor(QtGui.QPalette.HighlightedText, QtCore.Qt.black)
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dark_palette.setColor(QtGui.QPalette.Disabled, QtGui.QPalette.HighlightedText, disabled_color)
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# Fixes ugly (not to mention hard to read) disabled menu items.
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# Source: https://bugreports.qt.io/browse/QTBUG-10322?focusedCommentId=371060#comment-371060
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dark_palette.setColor(QtGui.QPalette.Disabled, QtGui.QPalette.Light, QtCore.Qt.transparent)
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# Fixes ugly media manager headers.
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dark_palette.setColor(QtGui.QPalette.Mid, QtGui.QColor(64, 64, 64))
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app.setPalette(dark_palette)
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def get_application_stylesheet():
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"""
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Return the correct application stylesheet based on the current style and operating system
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:return str: The correct stylesheet as a string
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"""
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stylesheet = ''
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if is_ui_theme(UiThemes.QDarkStyle):
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stylesheet = qdarkstyle.load_stylesheet_pyqt5()
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else:
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if not Registry().get('settings').value('advanced/alternate rows'):
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base_color = QtWidgets.QApplication.palette().color(QtGui.QPalette.Active, QtGui.QPalette.Base)
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alternate_rows_repair_stylesheet = \
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'QTableWidget, QListWidget, QTreeWidget {alternate-background-color: ' + base_color.name() + ';}\n'
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stylesheet += alternate_rows_repair_stylesheet
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if is_win():
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stylesheet += WIN_REPAIR_STYLESHEET
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return stylesheet
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def get_library_stylesheet():
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"""
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Return the correct stylesheet for the main window
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:return str: The correct stylesheet as a string
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"""
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if not is_ui_theme(UiThemes.QDarkStyle):
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return MEDIA_MANAGER_STYLE
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else:
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return ''
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