Add qss theme from qtum core

electrum/gui/qt/__init__.py

@@ -30,6 +30,7 @@
 import threading
 from typing import Optional, TYPE_CHECKING
 
+from .theme_helper import set_qtum_theme_if_needed
 
 try:
     import PyQt5
@@ -128,48 +129,9 @@ def __init__(self, config: 'SimpleConfig', daemon: 'Daemon', plugins: 'Plugins')
         self.build_tray_menu()
         self.tray.show()
         self.app.new_window_signal.connect(self.start_new_window)
-        self.set_qtum_theme_if_needed()
+        set_qtum_theme_if_needed(self)
         run_hook('init_qt', self)
 
-    def set_qtum_theme_if_needed(self):
-        use_dark_theme = self.config.get('qt_gui_color_theme', 'default') == 'dark'
-        #Add switcher for Qtum core style themes on electrum
-        use_qtum_theme1 = self.config.get('qt_gui_color_theme', 'default') == 'qtum_dark'
-        use_qtum_theme2 = self.config.get('qt_gui_color_theme', 'default') == 'qtum_almost_dark'
-        use_qtum_theme3 = self.config.get('qt_gui_color_theme', 'default') == 'qtum_light'
-
-        if use_dark_theme:
-            try:
-                import qdarkstyle
-                self.app.setStyleSheet(qdarkstyle.load_stylesheet_pyqt5())
-            except BaseException as e:
-                use_dark_theme = False
-                self.logger.warning(f'Error setting dark theme: {repr(e)}')
-        if use_qtum_theme1:
-            try:
-                self.app.setStyleSheet(open('electrum/gui/qt/styles/theme1/app.css').read())
-            except BaseException as e:
-                use_dark_theme = False
-                self.logger.warning(f'Error setting Qtum theme: {repr(e)}')
-        if use_qtum_theme2:
-            try:
-                self.app.setStyleSheet(open('electrum/gui/qt/styles/theme2/app.css').read())
-            except BaseException as e:
-                use_dark_theme = False
-                self.logger.warning(f'Error setting Qtum theme: {repr(e)}')
-        if use_qtum_theme3:
-            try:
-                self.app.setStyleSheet(open('electrum/gui/qt/styles/theme3/app.css').read())
-            except BaseException as e:
-                use_dark_theme = False
-                self.logger.warning(f'Error setting Qtum theme: {repr(e)}')
-        # Apply any necessary stylesheet patches
-        patch_qt_stylesheet(use_dark_theme=use_dark_theme)
-        # Even if we ourselves don't set the dark theme,
-        # the OS/window manager/etc might set *a dark theme*.
-        # Hence, try to choose colors accordingly:
-        ColorScheme.update_from_widget(QWidget(), force_dark=use_dark_theme)
-
     def build_tray_menu(self):
         # Avoid immediate GC of old menu when window closed via its action
         if self.tray.contextMenu() is None:

electrum/gui/qt/settings_dialog.py

@@ -40,7 +40,7 @@
 
 from electrum.i18n import languages
 from electrum import qrscanner
-
+from .theme_helper import *
 if TYPE_CHECKING:
     from electrum.simple_config import SimpleConfig
     from .main_window import ElectrumWindow
@@ -292,7 +292,7 @@ def on_unit(x, nz):
         colortheme_label = QLabel(_('Color theme') + ':')
         def on_colortheme(x):
             self.config.set_key('qt_gui_color_theme', colortheme_combo.itemData(x), True)
-            self.need_restart = True
+            set_qtum_theme_if_needed(self)
         colortheme_combo.currentIndexChanged.connect(on_colortheme)
         gui_widgets.append((colortheme_label, colortheme_combo))
 

electrum/gui/qt/theme_helper.py

@@ -0,0 +1,49 @@
+from PyQt5.QtWidgets import QWidget, QApplication
+
+from electrum.gui.qt.stylesheet_patcher import patch_qt_stylesheet
+from electrum.gui.qt.util import  ColorScheme
+
+def set_qtum_theme_if_needed(self):
+    use_dark_theme = self.config.get('qt_gui_color_theme', 'default') == 'dark'
+    # Add switcher for Qtum core style themes on electrum
+    use_qtum_theme1 = self.config.get('qt_gui_color_theme', 'default') == 'qtum_dark'
+    use_qtum_theme2 = self.config.get('qt_gui_color_theme', 'default') == 'qtum_almost_dark'
+    use_qtum_theme3 = self.config.get('qt_gui_color_theme', 'default') == 'qtum_light'
+    self.app = QApplication.instance()
+    if use_dark_theme:
+        try:
+            import qdarkstyle
+            self.app.setStyleSheet(qdarkstyle.load_stylesheet_pyqt5())
+        except BaseException as e:
+            use_dark_theme = False
+            self.logger.warning(f'Error setting dark theme: {repr(e)}')
+    elif use_qtum_theme1:
+        try:
+            self.app.setStyleSheet(open('electrum/gui/qt/styles/theme1/app.css').read())
+        except BaseException as e:
+            use_dark_theme = False
+            self.logger.warning(f'Error setting Qtum theme: {repr(e)}')
+    elif use_qtum_theme2:
+        try:
+            self.app.setStyleSheet(open('electrum/gui/qt/styles/theme2/app.css').read())
+        except BaseException as e:
+            use_dark_theme = False
+            self.logger.warning(f'Error setting Qtum theme: {repr(e)}')
+    elif use_qtum_theme3:
+        try:
+            self.app.setStyleSheet(open('electrum/gui/qt/styles/theme3/app.css').read())
+        except BaseException as e:
+            use_dark_theme = False
+            self.logger.warning(f'Error setting Qtum theme: {repr(e)}')
+    else:
+        try:
+            self.app.setStyleSheet('')
+        except BaseException as e:
+            use_dark_theme = False
+            self.logger.warning(f'Error setting Light theme: {repr(e)}')
+    # Apply any necessary stylesheet patches
+    patch_qt_stylesheet(use_dark_theme=use_dark_theme)
+    # Even if we ourselves don't set the dark theme,
+    # the OS/window manager/etc might set *a dark theme*.
+    # Hence, try to choose colors accordingly:
+    ColorScheme.update_from_widget(QWidget(), force_dark=use_dark_theme)