Add dark theme from QDarkStyle. Part 1: Force the theme

openlp/core/__init__.py

@@ -45,11 +45,13 @@ from openlp.core.common.versionchecker import VersionThread, get_application_ver
 from openlp.core.lib import ScreenList
 from openlp.core.resources import qInitResources
 from openlp.core.ui import SplashScreen
+from openlp.core.ui.dark import HAS_DARK_STYLE, DARK_STYLESHEET
 from openlp.core.ui.exceptionform import ExceptionForm
 from openlp.core.ui.firsttimeform import FirstTimeForm
 from openlp.core.ui.firsttimelanguageform import FirstTimeLanguageForm
 from openlp.core.ui.mainwindow import MainWindow
 
+
 __all__ = ['OpenLP', 'main']
 
 
@@ -122,13 +124,16 @@ class OpenLP(OpenLPMixin, QtWidgets.QApplication):
                 sys.exit()
         # Correct stylesheet bugs
         application_stylesheet = ''
-        if not Settings().value('advanced/alternate rows'):
-            base_color = self.palette().color(QtGui.QPalette.Active, QtGui.QPalette.Base)
-            alternate_rows_repair_stylesheet = \
-                'QTableWidget, QListWidget, QTreeWidget {alternate-background-color: ' + base_color.name() + ';}\n'
-            application_stylesheet += alternate_rows_repair_stylesheet
-        if is_win():
-            application_stylesheet += WIN_REPAIR_STYLESHEET
+        if HAS_DARK_STYLE:
+            application_stylesheet = DARK_STYLESHEET
+        else:
+            if not Settings().value('advanced/alternate rows'):
+                base_color = self.palette().color(QtGui.QPalette.Active, QtGui.QPalette.Base)
+                alternate_rows_repair_stylesheet = \
+                    'QTableWidget, QListWidget, QTreeWidget {alternate-background-color: ' + base_color.name() + ';}\n'
+                application_stylesheet += alternate_rows_repair_stylesheet
+            if is_win():
+                application_stylesheet += WIN_REPAIR_STYLESHEET
         if application_stylesheet:
             self.setStyleSheet(application_stylesheet)
         can_show_splash = Settings().value('core/show splash')

openlp/core/ui/dark.py

@@ -0,0 +1,32 @@
+# -*- coding: utf-8 -*-
+# vim: autoindent shiftwidth=4 expandtab textwidth=120 tabstop=4 softtabstop=4
+
+###############################################################################
+# OpenLP - Open Source Lyrics Projection                                      #
+# --------------------------------------------------------------------------- #
+# Copyright (c) 2008-2017 OpenLP Developers                                   #
+# --------------------------------------------------------------------------- #
+# This program is free software; you can redistribute it and/or modify it     #
+# under the terms of the GNU General Public License as published by the Free  #
+# Software Foundation; version 2 of the License.                              #
+#                                                                             #
+# This program is distributed in the hope that it will be useful, but WITHOUT #
+# ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or       #
+# FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for    #
+# more details.                                                               #
+#                                                                             #
+# You should have received a copy of the GNU General Public License along     #
+# with this program; if not, write to the Free Software Foundation, Inc., 59  #
+# Temple Place, Suite 330, Boston, MA 02111-1307 USA                          #
+###############################################################################
+"""
+The :mod:`~openlp.core.ui.dark` module looks for and loads a dark theme
+"""
+
+try:
+    import qdarkstyle
+    HAS_DARK_STYLE = True
+    DARK_STYLESHEET = qdarkstyle.load_stylesheet_pyqt5()
+except:
+    HAS_DARK_STYLE = False
+    DARK_STYLESHEET = ''

openlp/core/ui/mainwindow.py

@@ -45,6 +45,7 @@ from openlp.core.lib import Renderer, PluginManager, ImageManager, PluginStatus,
 from openlp.core.lib.ui import create_action
 from openlp.core.ui import AboutForm, SettingsForm, ServiceManager, ThemeManager, LiveController, PluginForm, \
     ShortcutListForm, FormattingTagForm, PreviewController
+from openlp.core.ui.dark import HAS_DARK_STYLE
 from openlp.core.ui.firsttimeform import FirstTimeForm
 from openlp.core.ui.media import MediaController
 from openlp.core.ui.printserviceform import PrintServiceForm
@@ -155,7 +156,8 @@ class Ui_MainWindow(object):
         # Create the MediaManager
         self.media_manager_dock = OpenLPDockWidget(main_window, 'media_manager_dock',
                                                    ':/system/system_mediamanager.png')
-        self.media_manager_dock.setStyleSheet(MEDIA_MANAGER_STYLE)
+        if not HAS_DARK_STYLE:
+            self.media_manager_dock.setStyleSheet(MEDIA_MANAGER_STYLE)
         # Create the media toolbox
         self.media_tool_box = QtWidgets.QToolBox(self.media_manager_dock)
         self.media_tool_box.setObjectName('media_tool_box')