Added Text.fonts_installed_list - returns the fonts installed as reported by tkinter.

DemoPrograms/Demo_Font_Previewer.py

@@ -1,17 +1,20 @@
 #!/usr/bin/env python
-import sys
 import PySimpleGUI as sg
-from tkinter import font
-import tkinter
-root = tkinter.Tk()
-fonts = list(font.families())
-fonts.sort()
-root.destroy()
 
 '''
-    Showing fonts in PSG / tk
+    Demo Font Previewer
+    
+    Gets a list of the installed fonts according to tkinter.
+    Requires PySimpleGUI version 4.57.0 and newer (that's when sg.Text.fonts_installed_list was added)
+    
+    Uses the Text element's class method to get the fonts reported by tkinter.
+    
+    Copyright 2020, 2021, 2022 PySimpleGUI
 '''
 
+fonts = sg.Text.fonts_installed_list()
+
+
 sg.theme('Black')
 
 layout = [[sg.Text('My Text Element',

PySimpleGUI.py

@@ -1,5 +1,5 @@
 #!/usr/bin/python3
-version = __version__ = "4.56.0.8 Unreleased"
+version = __version__ = "4.56.0.9 Unreleased"
 
 _change_log = """
     Changelog since 4.56.0 released to PyPI on 5-Jan-2022
@@ -22,6 +22,8 @@ _change_log = """
     4.56.0.8
         Changed +CICKED+ to +CLICKED+ (typo) in the table header
         Added constant TABLE_CLICKED_INDICATOR that is the value '+CLICKED+' so that it can be referenced instead of user's hard cording a string
+    4.56.0.9
+        Added class method Text.fonts_installed_list - returns list of fonts as reported by tkinter
     """
 
 __version__ = version.split()[0]  # For PEP 396 and PEP 345
@@ -3470,6 +3472,27 @@ class Text(Element):
         return text
 
 
+    @classmethod
+    def fonts_installed_list(cls):
+        """
+        Returns a list of strings that tkinter reports as the installed fonts
+
+        :return:          List of the installed font names
+        :rtype:           List[str]
+        """
+        # if no windows have been created (there is no hidden master root to rely on) then temporarily make a window so the measurement can happen
+        if Window.hidden_master_root is None:
+            root = tk.Tk()
+        else:
+            root = Window.hidden_master_root
+
+        fonts = list(tkinter.font.families())
+        fonts.sort()
+        if Window.hidden_master_root is None:
+            root.destroy()
+        return fonts
+
+
     @classmethod
     def char_width_in_pixels(cls, font, character='W'):
         """