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Merge pull request #2277 from PySimpleGUI/Dev-latest 

Added a progress bar
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PySimpleGUI 2019-11-29 20:53:50 -05:00 committed by GitHub
parent bdd150361e 235ead0f79
commit 74c83f5727
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1 changed files with 14 additions and 7 deletions
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21
DemoPrograms/Demo_Multithreaded_Long_Task_Simple.py
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@ -1,11 +1,8 @@
#!/usr/bin/python3 #!/usr/bin/python3
import queue
import threading import threading
import time import time
import PySimpleGUI as sg import PySimpleGUI as sg
# This program has been tested on all flavors of PySimpleGUI and it works with no problems at all
""" """
DESIGN PATTERN - Multithreaded Long Tasks GUI using shared global variables DESIGN PATTERN - Multithreaded Long Tasks GUI using shared global variables
Presents one method for running long-running operations in a PySimpleGUI environment. Presents one method for running long-running operations in a PySimpleGUI environment.
@ -16,10 +13,11 @@ import PySimpleGUI as sg
a Window is created, and an event loop is executed. a Window is created, and an event loop is executed.
""" """
thread_done = 1 thread_done = 1
message = '' message = ''
thread_counter = 0 thread_counter = 0
total = 100
progress = 0
def long_operation_thread(seconds): def long_operation_thread(seconds):
""" """
@ -29,11 +27,14 @@ def long_operation_thread(seconds):
:return: :return:
""" """
global thread_done, message, thread_counter global thread_done, message, thread_counter, progress
print('Starting thread - will sleep for {} seconds'.format(seconds)) print('Starting thread - will sleep for {} seconds'.format(seconds))
thread_counter += 1 thread_counter += 1
time.sleep(seconds) # sleep for a while for i in range(int(seconds*10)):
time.sleep(.1) # sleep for a while
progress += total/(seconds*10)
message = f'***This is a message from the thread {thread_counter} ***' message = f'***This is a message from the thread {thread_counter} ***'
thread_done = True thread_done = True
@ -44,7 +45,7 @@ def the_gui():
Reads data from a global variable and displays Reads data from a global variable and displays
Returns when the user exits / closes the window Returns when the user exits / closes the window
""" """
global thread_done, message global thread_done, message, progress
sg.change_look_and_feel('Light Brown 3') sg.change_look_and_feel('Light Brown 3')
@ -53,6 +54,7 @@ def the_gui():
[sg.Text('Number of seconds your task will take'), [sg.Text('Number of seconds your task will take'),
sg.Input(key='-SECONDS-', size=(5, 1)), sg.Input(key='-SECONDS-', size=(5, 1)),
sg.Button('Do Long Task', bind_return_key=True)], sg.Button('Do Long Task', bind_return_key=True)],
[sg.Text('Work progress'), sg.ProgressBar(total, size=(20,20), orientation='h', key='-PROG-')],
[sg.Button('Click Me'), sg.Button('Exit')], ] [sg.Button('Click Me'), sg.Button('Exit')], ]
window = sg.Window('Multithreaded Window', layout) window = sg.Window('Multithreaded Window', layout)
@ -72,8 +74,13 @@ def the_gui():
if thread_done is True: if thread_done is True:
print('The thread has finished!') print('The thread has finished!')
print(f'message = {message}') print(f'message = {message}')
# reset everything for the next run
thread_done = False thread_done = False
message = '' message = ''
progress = 0
window['-PROG-'].update_bar(total, total) # show the bar as maxed out
if progress != 0:
window['-PROG-'].update_bar(progress, total) # update the progress bar if non-zero
# if user exits the window, then close the window and exit the GUI func # if user exits the window, then close the window and exit the GUI func
window.close() window.close()