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Merge pull request #4154 from PySimpleGUI/Dev-latest 

Removed old Pi Robotics demo.  Added Demo_Buttons_Realtime
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PySimpleGUI 2021-04-06 17:46:02 -04:00 committed by GitHub
parent 49e31682ec c095497fb9
commit d5caf3ea1f
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2 changed files with 54 additions and 100 deletions
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54
DemoPrograms/Demo_Buttons_Realtime.py Normal file
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#!/usr/bin/env python
"""
Demo - Realtime Buttons
Realtime buttons provide a way for you to get a continuous stream of button
events for as long as a button is held down.
This demo is using a timeout to determine that a button has been released.
If your application doesn't care when a button is released and only needs to know
that it's being held down, then you can remove the timeout on the window read call.
Note that your reaction latency will be the same as your timeout value. In this demo
the timeout is 100, so there will be 100ms between releasing a button and your program detecting
this has happened.
Copyright 2021 PySimpleGUI
"""
import PySimpleGUI as sg
def main():
# The Quit button is being placed in the bottom right corner and the colors are inverted, just for fun
layout = [[sg.Text('Robotics Remote Control')],
[sg.Text('Hold Down Button To Move')],
[sg.Text()],
[sg.Text(' '),
sg.RealtimeButton(sg.SYMBOL_UP, key='-FORWARD-')],
[sg.RealtimeButton(sg.SYMBOL_LEFT, key='-LEFT-'),
sg.Text(size=(10,1), key='-STATUS-', justification='c', pad=(0,0)),
sg.RealtimeButton(sg.SYMBOL_RIGHT, key='-RIGHT-')],
[sg.Text(' '),
sg.RealtimeButton(sg.SYMBOL_DOWN, key='-DOWN-')],
[sg.Text()],
[sg.Column([[sg.Quit(button_color=(sg.theme_button_color()[1], sg.theme_button_color()[0]), focus=True)]], justification='r')]]
window = sg.Window('Robotics Remote Control', layout)
while True:
# This is the code that reads and updates your window
event, values = window.read(timeout=100)
if event in (sg.WIN_CLOSED, 'Quit'):
break
if event != sg.TIMEOUT_EVENT:
# if not a timeout event, then it's a button that's being held down
window['-STATUS-'].update(event)
else:
# A timeout signals that all buttons have been released so clear the status display
window['-STATUS-'].update('')
window.close()
if __name__ == '__main__':
sg.theme('dark red')
main()

100
DemoPrograms/Demo_Pi_Robotics.py
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#!/usr/bin/env python
import sys
import PySimpleGUI as sg
# Robotics design pattern
# Uses Realtime Buttons to simulate the controls for a robot
# Rather than sending a single click when a button is clicked, Realtime Buttons
# send button presses continuously while the button is pressed down.
# Two examples, one using fancy graphics, one plain.
def RemoteControlExample():
# Make a form, but don't use context manager
sg.set_options(element_padding=(0,0))
back = '#eeeeee'
sg.set_options(border_width=0,
button_color=('black', back),
background_color=back,
element_background_color=back,
text_element_background_color=back)
mypad = ((50,0),0)
layout = [[sg.Text('Robotics Remote Control')],
[sg.Text('', justification='center', size=(19,1), key='status')],
[ sg.RealtimeButton('', key='Forward', pad=mypad)],
[ sg.RealtimeButton('', key='Left', ),
sg.RealtimeButton('', key='Right', pad=mypad)],
[ sg.RealtimeButton('', key='Reverse', pad=mypad)],
[sg.Text('')],
[sg.Quit(button_color=('black', 'orange'))]]
window = sg.Window('Robotics Remote Control', layout, grab_anywhere=False)
#
# Some place later in your code...
# You need to perform a ReadNonBlocking on your form every now and then or
# else it won't refresh.
#
# your program's main loop
while True:
# This is the code that reads and updates your window
event, values = window.read(timeout=0, timeout_key='timeout')
if event is not None:
window['status'].update(event)
elif event != 'timeout':
window['status'].update('')
# if user clicked quit button OR closed the form using the X, then break out of loop
if event == 'Quit' or values is None:
break
window.close()
def RemoteControlExample_NoGraphics():
# Make a form, but don't use context manager
layout = [[sg.Text('Robotics Remote Control', justification='center')],
[sg.Text('', justification='center', size=(19,1), key='status')],
[sg.Text(' '*8), sg.RealtimeButton('Forward')],
[ sg.RealtimeButton('Left'), sg.Text(' '), sg.RealtimeButton('Right')],
[sg.Text(' '*8), sg.RealtimeButton('Reverse')],
[sg.Text('')],
[sg.Quit(button_color=('black', 'orange'))]]
# Display form to user
window = sg.Window('Robotics Remote Control', layout, grab_anywhere=False)
#
# Some place later in your code...
# You need to perform a Read on your form every now and then or
# else it won't refresh.
# Notice how the timeout is 100ms. You don't have to use a timeout = 0 for all of your hardware
# applications. Leave some CPU for other threads or for your GUI. The longer you are in the GUI, the more
# responsive the GUI itself will be Match your timeout with your hardware's capabilities
#
# your program's main loop
while True :
# This is the code that reads and updates your window
event, values = window.read(timeout=100, timeout_key='timeout')
# print(event, values)
if event != 'timeout':
window['status'].update(event)
else:
window['status'].update('')
# if user clicked quit button OR closed the form using the X, then break out of loop
if event in (sg.WIN_CLOSED, 'Quit'):
break
window.close()
# ------------------------------------- main -------------------------------------
def main():
RemoteControlExample_NoGraphics()
# Uncomment to get the fancy graphics version. Be sure and download the button images!
RemoteControlExample()
# sg.popup('End of non-blocking demonstration')
if __name__ == '__main__':
main()