109 lines
4.1 KiB
Python
109 lines
4.1 KiB
Python
import PySimpleGUI as sg
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"""
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Demo - User Settings
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Use the "user_settings" API calls to make a "settings window"
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This demo is very basic. The user_settings functions are used directly without a lookup table
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or some other mechanism to map between PySimpleGUI keys and user settings keys.
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Two windows are shown. One is a super-simple "save previously entered filename"
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The other is a larger "settings window" where multiple settings are saved/loaded
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Copyright 2020 PySimpleGUI.org
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"""
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SETTINGS_PATH = '.'
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def make_window():
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"""
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Creates a new window. The default values for some elements are pulled directly from the
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"User Settings" without the use of temp variables.
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Some get_entry calls don't have a default value, such as theme, because there was an initial call
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that would have set the default value if the setting wasn't present. Could still put the default
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value if you wanted but it would be 2 places to change if you wanted a different default value.
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Use of a lookup table to map between element keys and user settings could be aded. This demo
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is intentionally done without one to show how to use the settings APIs in the most basic,
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straightforward way.
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If your application allows changing the theme, then a make_window function is good to have
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so that you can close and re-create a window easily.
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:return: (sg.Window) The window that was created
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"""
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sg.theme(sg.user_settings_get_entry('theme', 'DarkBlue2')) # set the theme
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layout = [[sg.Text('Settings Window')],
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[sg.Input(sg.user_settings_get_entry('input', ''), k='-IN-')],
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[sg.Listbox(sg.theme_list(), default_values=[sg.user_settings_get_entry('theme')], size=(15, 10), k='-LISTBOX-')],
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[sg.CB('Option 1', sg.user_settings_get_entry('option1', True), k='-CB1-')],
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[sg.CB('Option 2', sg.user_settings_get_entry('option2', False), k='-CB2-')],
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[sg.T('Settings file = ' + sg.user_settings_filename())],
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[sg.Button('Save'), sg.Button('Exit without saving', k='Exit')]]
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return sg.Window('A Settings Window', layout)
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def settings_window():
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"""
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Create and interact with a "settings window". You can a similar pair of functions to your
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code to add a "settings" feature.
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"""
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window = make_window()
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current_theme = sg.theme()
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while True:
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event, values = window.read()
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if event in (sg.WINDOW_CLOSED, 'Exit'):
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break
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if event == 'Save':
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# Save some of the values as user settings
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sg.user_settings_set_entry('input', values['-IN-'])
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sg.user_settings_set_entry('theme', values['-LISTBOX-'][0])
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sg.user_settings_set_entry('option1', values['-CB1-'])
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sg.user_settings_set_entry('option2', values['-CB2-'])
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# if the theme was changed, restart the window
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if values['-LISTBOX-'][0] != current_theme:
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current_theme = values['-LISTBOX-'][0]
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window.close()
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window = make_window()
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def save_previous_filename_demo():
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"""
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Saving the previously selected filename....
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A demo of one of the likely most popular use of user settings
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* Use previous input as default for Input
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* When a new filename is chosen, write the filename to user settings
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"""
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# Notice that the Input element has a default value given (first parameter) that is read from the user settings
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layout = [[sg.Text('Enter a filename:')],
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[sg.Input(sg.user_settings_get_entry('filename', ''), key='-IN-'), sg.FileBrowse()],
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[sg.B('Save'), sg.B('Exit Without Saving', key='Exit')]]
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window = sg.Window('Filename Example', layout)
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while True:
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event, values = window.read()
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if event in(sg.WINDOW_CLOSED, 'Exit'):
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break
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elif event == 'Save':
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sg.user_settings_set_entry('filename', values['-IN-'])
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window.close()
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if __name__ == '__main__':
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sg.user_settings_filename(path=SETTINGS_PATH) # Set the location for the settings file
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# Run a couple of demo windows
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save_previous_filename_demo()
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settings_window()
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