New Demo - a custom Menubar Element

DemoPrograms/Demo_Menubar_Custom.py

@@ -0,0 +1,97 @@
+#!/usr/bin/env python
+import PySimpleGUI as sg
+"""
+    Demo - A Custom Menubar Element Simulated Using ButtonMenu Elements
+
+    Because a Menubar is created by the OS and not the underlying GUI framework, the
+    ability to customize the look and feel of the standard Menubar is not possible.
+
+    Additionally, the Titlebar Element and the Meny Element don't work well together.
+    The order gets swapped.
+
+    One way to get around all of the problems above is to simulate a Menu Element.
+    That's exactly what this demo does.
+
+    The color choice for the menubar background and text use the theme's button colors.
+    You can change these color choices by changing the Menubar in the layout.
+
+    Copyright 2021 PySimpleGUI
+"""
+
+
+def Menubar(menu_def, text_color, background_color, pad=(0, 0)):
+    """
+    A User Defined element that simulates a Menu element by using ButtonMenu elements
+
+    :param menu_def: A standard PySimpleGUI menu definition
+    :type menu_def: List[List[Tuple[str, List[str]]]
+    :param text_color: color for the menubar's text
+    :type text_color:
+    :param background_color: color for the menubar's background
+    :type background_color:
+    :param pad: Amount of padding around each menu entry
+    :type pad:
+    :return: A column element that has a row of ButtonMenu buttons
+    :rtype: sg.Column
+    """
+    row = []
+    for menu in menu_def:
+        text = menu[0]
+        if text.__contains__(sg.MENU_SHORTCUT_CHARACTER):
+            text = text.replace(sg.MENU_SHORTCUT_CHARACTER, '')
+        if text.startswith(sg.MENU_DISABLED_CHARACTER):
+            disabled = True
+            text = text[len(sg.MENU_DISABLED_CHARACTER):]
+        else:
+            disabled = False
+        row += [sg.ButtonMenu(text, menu, border_width=0, button_color=f'{text_color} on {background_color}',key=text, pad=pad, disabled=disabled)]
+
+    return sg.Column([row], background_color=background_color, pad=(0,0), expand_x=True)
+
+def main():
+    # sg.theme('dark green 7')
+    # sg.theme('dark gray 14')
+
+    menu_def = [['&File', ['&Open     Ctrl-O', '&Save       Ctrl-S', '&Properties', 'E&xit']],
+                ['&Edit', [['Special', 'Normal',['Normal1', 'Normal2'] ], 'Undo'], ],
+                ['!Disabled', [['Special', 'Normal',['Normal1', 'Normal2'] ], 'Undo'], ],
+                ['&Toolbar', ['---', 'Command &1::Command_Key', 'Command &2', '---', 'Command &3', 'Command &4']],
+                ['&Help', ['&About...']], ]
+
+    layout = [
+        # [sg.Menu(menu_def, tearoff=False, key='-MENU BAR-')],     # This is how a Menu is normally defined
+        [Menubar(menu_def, sg.theme_button_color()[1], sg.theme_button_color()[0], (5, 0))],
+        [sg.Multiline(size=(70, 20), no_scrollbar=True, reroute_stdout=True, reroute_cprint=True, write_only=True)],
+    ]
+
+    window = sg.Window("Custom Titlebar with Custom (Simulated) Menubar", layout, use_custom_titlebar=True)
+
+    # ------ Event Loop ------ #
+    while True:
+        event, values = window.read()
+        # convert ButtonMenu event so they look like Menu events
+        elem = window.find_element(event, silent_on_error=True)
+        if elem and elem.Type == sg.ELEM_TYPE_BUTTONMENU:
+            event = values[event]
+
+        if event in (sg.WIN_CLOSED, 'Exit'):
+            break
+
+        sg.cprint(f'event = {event}', c='white on red')
+        sg.cprint(f'values = {values}', c='white on green')
+
+        # ------ Process menu choices ------ #
+        if event == 'About...':
+            window.disappear()
+            sg.popup('About this program', 'Simulated Menubar to accompany a simulated Titlebar',
+                     'PySimpleGUI Version', sg.version,  grab_anywhere=True, keep_on_top=True)
+            window.reappear()
+        elif event.startswith('Open'):
+            filename = sg.popup_get_file('file to open', no_window=True)
+            print(filename)
+
+    window.close()
+
+
+if __name__ == '__main__':
+    main()