New Demo Program - create custom themes and save in user settings file

DemoPrograms/Demo_Theme_Custom_Saved_In_UserSettings.py

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+import PySimpleGUI as sg
+
+"""
+    Demo of using User Settings to create and store your own personal PySimpleGUI themes
+
+    There are 2 operations
+    1. Initialize your settings file.  You would normally only do this once and perhaps
+        write a simple program to administer it or you can also edit the JSON file directly
+    2. Use your settings file.  Add the code to the top of all of your applications that you want
+        to have access to your selection of custom themes
+
+    Copyright 2022 PySimpleGUI.org
+"""
+
+def init_your_settings():
+    DarkGrey20 = {'BACKGROUND': '#19232D',
+                 'TEXT': '#ffffff',
+                 'INPUT': '#32414B',
+                 'TEXT_INPUT': '#ffffff',
+                 'SCROLL': '#505F69',
+                 'BUTTON': ('#ffffff', '#32414B'),
+                 'PROGRESS': ('#505F69', '#32414B'),
+                 'BORDER': 1, 'SLIDER_DEPTH': 0, 'PROGRESS_DEPTH': 0,
+                 }
+
+    DarkGrey21 = {'BACKGROUND': '#121212',
+                 'TEXT': '#dddddd',
+                 'INPUT': '#1e1e1e',
+                 'TEXT_INPUT': '#dbdcd9',
+                 'SCROLL': '#272727',
+                 'BUTTON': ('#69b1ef', '#2e2e2e'),
+                 'PROGRESS': ('#69b1ef', '#2e2e2e'),
+                 'BORDER': 1, 'SLIDER_DEPTH': 0, 'PROGRESS_DEPTH': 0,
+                 }
+    # Set up my app settings file... start with an empty one to be sure
+    sg.user_settings_delete_filename('my_awesome_apps')
+    sg.user_settings_filename('my_awesome_apps')
+    # Add the theme dictionaries
+    sg.user_settings_set_entry('Dark Gray 20', DarkGrey20)
+    sg.user_settings_set_entry('Dark Gray 21', DarkGrey21)
+    sg.user_settings_set_entry('-theme list-', ('Dark Gray 20', 'Dark Gray 21'))
+    sg.popup_quick_message('Your settings file has been created and is ready to be used', background_color='#1c1e23', text_color='white', keep_on_top=True, font='_ 30')
+
+
+def use_your_settings():
+    sg.user_settings_filename('my_awesome_apps')
+
+    default_theme_name = sg.user_settings_get_entry('-theme default-', None)
+
+    # Only need this section is you want this app to allow user to select the default theme
+    # Could also auto-choose the first theme in the list for them
+    if default_theme_name is None:
+        default_theme_list = sg.user_settings_get_entry('-theme list-', None)
+        event, values = sg.Window('Choose a theme', [[sg.T('Your settings do not have a default theme chosen so please choose one')],[sg.Combo(default_theme_list, key='-THEME-', readonly=True, enable_events=True)]]).read(
+            close=True)
+        if event == sg.WIN_CLOSED:
+            sg.popup_error('No theme chosen so exiting')
+            exit()
+        default_theme_name = values[event]
+        sg.user_settings_set_entry('-theme default-', default_theme_name)
+
+    my_theme = sg.user_settings_get_entry(default_theme_name, None)
+    sg.theme_add_new(default_theme_name, my_theme)
+
+    # Switch your theme to use the newly added one
+    sg.theme(default_theme_name)
+
+    # Test out the theme
+    sg.popup_get_text(f'My theme is {default_theme_name} looks like this.', image=sg.EMOJI_BASE64_HAPPY_THUMBS_UP)
+
+if __name__ == '__main__':
+    operations = ('Initialize your settings (must do first)', 'Use your settings')
+    event, values = sg.Window('Choose an operation', [[sg.T('Choose an operation to perform')],[sg.Combo(operations, key='-OPERATION-', readonly=True, enable_events=True)]]).read(close=True)
+    if event == sg.WIN_CLOSED:
+        sg.popup_error('No operation chosen so exiting')
+    elif values[event] == operations[0]:
+        init_your_settings()
+    elif values[event] == operations[1]:
+        use_your_settings()