Makes ThemeManager even more flexible. Also set 'Dark' as default

theme. Also remove ugly 'system' theme

.gitignore

@@ -10,3 +10,4 @@ launch.bat
 designer.bat
 *.sh
 .vscode/
+default_pics/

artemis.py

@@ -43,7 +43,7 @@ from utilities import (checksum_ok,
                        format_numbers,
                        resource_path,)
 
-# import icon_rc
+# import default_imgs_rc
 
 
 qt_creator_file = resource_path("artemis.ui")
@@ -1363,7 +1363,7 @@ class Artemis(QMainWindow, Ui_MainWindow):
 
     def display_spectrogram(self):
         default_pic = os.path.join(
-            self.default_images_folder,
+            Constants.DEFAULT_IMGS_FOLDER,
             Constants.NOT_SELECTED
         )
         item = self.result_list.currentItem()
@@ -1376,7 +1376,7 @@ class Artemis(QMainWindow, Ui_MainWindow):
             )
             if not QFileInfo(path_spectr).exists():
                 path_spectr = os.path.join(
-                    self.default_images_folder,
+                    Constants.DEFAULT_IMGS_FOLDER,
                     Constants.NOT_AVAILABLE
                 )
         else:
@@ -1441,14 +1441,14 @@ class Artemis(QMainWindow, Ui_MainWindow):
 
 if __name__ == '__main__':
     my_app = QApplication(sys.argv)
-    # img = QPixmap(":/icons/Artemis3.500px.png")
-    # splash = QSplashScreen(img)
-    # splash.show()
-    # start= time()
-    # while time()-start < 2:
-    #     sleep(0.001)
-    #     my_app.processEvents()
-    # splash.close()
+    img = QPixmap(":/icon/default_pics/Artemis3.500px.png")
+    splash = QSplashScreen(img)
+    splash.show()
+    start= time()
+    while time() - start < 2:
+        sleep(0.001)
+        my_app.processEvents()
+    splash.close()
     artemis = Artemis()
     artemis.show()
     sys.exit(my_app.exec_())

artemis.ui

@@ -20,8 +20,8 @@
    <string>ARTΣMIS 3.0</string>
   </property>
   <property name="windowIcon">
-   <iconset>
-    <normaloff>:/icons/Artemis3.ico</normaloff>:/icons/Artemis3.ico</iconset>
+   <iconset resource="default_imgs.qrc">
+    <normaloff>:/icon/default_pics/Artemis3.ico</normaloff>:/icon/default_pics/Artemis3.ico</iconset>
   </property>
   <property name="styleSheet">
    <string notr="true"/>
@@ -9542,7 +9542,7 @@ QSlider::handle:horizontal {
   </customwidget>
  </customwidgets>
  <resources>
-  <include location="icon.qrc"/>
+  <include location="default_imgs.qrc"/>
  </resources>
  <connections/>
 </ui>

constants.py

@@ -1,5 +1,6 @@
 from collections import namedtuple
 from enum import Enum, auto
+import os.path
 
 
 class Ftype:
@@ -154,3 +155,4 @@ class Constants:
     UNKNOWN                 = "N/A"
     EXTRACTING_MSG          = "Extracting..."
     EXTRACTING_CODE         = -1
+    DEFAULT_IMGS_FOLDER     = os.path.join(":", "pics", "default_pics")

default_imgs.qrc

@@ -0,0 +1,11 @@
+<RCC>
+  <qresource prefix="icon">
+    <file>default_pics/Artemis3.500px.png</file>
+    <file>default_pics/Artemis3.ico</file>
+    <file>default_pics/Artemis3.png</file>
+  </qresource>
+  <qresource prefix="pics">
+    <file>default_pics/nosignalselected.png</file>
+    <file>default_pics/spectrumnotavailable.png</file>
+  </qresource>
+</RCC>

download_db_window.ui

@@ -7,15 +7,15 @@
     <x>0</x>
     <y>0</y>
     <width>400</width>
-    <height>157</height>
+    <height>160</height>
    </rect>
   </property>
   <property name="windowTitle">
    <string>Download database</string>
   </property>
   <property name="windowIcon">
-   <iconset>
-    <normaloff>:/icons/Artemis3.ico</normaloff>:/icons/Artemis3.ico</iconset>
+   <iconset resource="default_imgs.qrc">
+    <normaloff>:/icon/default_pics/Artemis3.ico</normaloff>:/icon/default_pics/Artemis3.ico</iconset>
   </property>
   <property name="styleSheet">
    <string notr="true"/>
@@ -99,7 +99,7 @@ Please wait...
   </layout>
  </widget>
  <resources>
-  <include location="icon.qrc"/>
+  <include location="default_imgs.qrc"/>
  </resources>
  <connections/>
 </ui>

icon.qrc

@@ -1,6 +0,0 @@
-<RCC>
-  <qresource prefix="icons">
-    <file>Artemis3.500px.png</file>
-    <file>Artemis3.ico</file>
-  </qresource>
-</RCC>

themesmanager.py

@@ -14,7 +14,7 @@ class ThemeConstants:
     FOLDER                 = "themes"
     EXTENSION              = ".qss"
     ICONS_FOLDER           = "icons"
-    DEFAULT                = "1-system"
+    DEFAULT                = "1-dark"
     CURRENT                = ".current_theme"
     COLORS                 = "colors.txt"
     COLOR_SEPARATOR        = "="
@@ -25,6 +25,8 @@ class ThemeConstants:
     DEFAULT_TEXT_COLOR     = "#ffffff"
     THEME_NOT_FOUND        = "Theme not found"
     MISSING_THEME          = "Missing theme in '" + FOLDER + "' folder."
+    MISSING_THEME_FOLDER   = FOLDER + " folder not found.\nOnly the basic theme is available."
+    THEME_FOLDER_NOT_FOUND = FOLDER + " folder not found"
 
 class ThemeManager:
     def __init__(self, parent):
@@ -95,6 +97,7 @@ class ThemeManager:
     @pyqtSlot()
     def __apply(self, theme_path):
         self.__theme_path = theme_path
+        if os.path.exists(theme_path):
             if self.__theme_path != self.__current_theme:
                 self.__change()
                 self.__parent.display_specs(
@@ -107,6 +110,9 @@ class ThemeManager:
                     self.__parent.inactive_color
                 )
                 self.__space_weather_labels.refresh()
+        else:
+            pop_up(self.__parent, title=ThemeConstants.THEME_NOT_FOUND,
+                   text=ThemeConstants.MISSING_THEME).show()
 
     def __pretty_name(self, bad_name):
         return ' '.join(
@@ -118,6 +124,7 @@ class ThemeManager:
     def __detect_themes(self):
         themes = []
         ag = QActionGroup(self.__parent, exclusive=True)
+        if os.path.exists(ThemeConstants.FOLDER):
             for theme_folder in os.listdir(ThemeConstants.FOLDER):
                 relative_folder = os.path.join(ThemeConstants.FOLDER, theme_folder)
                 if os.path.isdir(os.path.abspath(relative_folder)):
@@ -134,6 +141,9 @@ class ThemeManager:
                 self.__parent.menu_themes.addAction(new_theme)
                 self.__theme_names[theme_name.lstrip('&')] = new_theme
                 new_theme.triggered.connect(partial(self.__apply, theme_path))
+        else:
+            pop_up(self.__parent, title=ThemeConstants.THEME_FOLDER_NOT_FOUND,
+                   text=ThemeConstants.MISSING_THEME_FOLDER).show()
 
     def __is_valid_html_color(self, colors):
         pattern = "#([a-zA-Z0-9]){6}"
@@ -314,12 +324,22 @@ class ThemeManager:
             with open(current_theme_file, "r") as current_theme_path:
                 theme_path = current_theme_path.read()
                 theme_name = self.__pretty_name(os.path.basename(theme_path))
+                try:
                     self.__theme_names[theme_name].setChecked(True)
+                except Exception:
+                    pop_up(self.__parent, title=ThemeConstants.THEME_NOT_FOUND,
+                           text=ThemeConstants.MISSING_THEME).show()
+                else:
                     self.__apply(theme_path)
         else:
+            try:
                 self.__theme_names[
                     self.__pretty_name(ThemeConstants.DEFAULT)
                 ].setChecked(True)
+            except Exception:
+                pop_up(self.__parent, title=ThemeConstants.THEME_NOT_FOUND,
+                       text=ThemeConstants.MISSING_THEME).show()
+            else:
                 self.__apply(
                     os.path.join(
                         ThemeConstants.FOLDER,