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Use the NEW Timeout capability for timing... no more sleeps

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This commit is contained in:
MikeTheWatchGuy 2018-10-18 14:56:08 -04:00
parent aa40a73266
commit 0645b49624
3 changed files with 29 additions and 35 deletions
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25
Demo_Desktop_Widget_CPU_Utilization.py
View file

@ -49,7 +49,7 @@ def main():
justification='center', key='text')],
[sg.Text('', size=(30, 8), font=('Courier New', 12),text_color='white', justification='left', key='processes')],
[sg.Exit(button_color=('white', 'firebrick4'), pad=((15,0), 0), size=(9,1)),
sg.Spin([x+1 for x in range(10)], 1, key='spin')],]
sg.Spin([x+1 for x in range(10)], 3, key='spin')],]
window = sg.Window('CPU Utilization',
no_titlebar=True,
@ -59,25 +59,19 @@ def main():
# start cpu measurement thread
thread = Thread(target=CPU_thread,args=(None,))
thread.start()
timeout_value = 1 # make first read really quick
g_interval = 1
# ---------------- main loop ----------------
while (True):
# --------- Read and update window --------
event, values = window.ReadNonBlocking()
event, values = window.Read(timeout=timeout_value, timeout_key='Timeout')
# --------- Do Button Operations --------
if values is None or event == 'Exit':
if event is None or event == 'Exit':
break
try:
g_interval = int(values['spin'])
except:
g_interval = 1
# cpu_percent = psutil.cpu_percent(interval=interval) # if don't wan to use a task
timeout_value = int(values['spin']) * 1000
cpu_percent = g_cpu_percent
# let the GUI run ever 700ms regardless of CPU polling time. makes window be more responsive
time.sleep(.7)
display_string = ''
if g_procs:
# --------- Create list of top % CPU porocesses --------
@ -93,13 +87,10 @@ def main():
for proc, cpu in top_sorted:
display_string += '{:2.2f} {}\n'.format(cpu/10, proc)
# --------- Display timer in window --------
# --------- Display timer and proceses in window --------
window.FindElement('text').Update('CPU {}'.format(cpu_percent))
window.FindElement('processes').Update(display_string)
# Broke out of main loop. Close the window.
window.CloseNonBlocking()
g_exit = True
thread.join()

20
Demo_Desktop_Widget_CPU_Utilization_Simple.py
View file

@ -14,28 +14,28 @@ sg.ChangeLookAndFeel('Black')
layout = [[sg.Text('CPU Utilization')],
[sg.Text('', size=(8, 2), font=('Helvetica', 20), justification='center', key='_text_')],
[sg.Exit(button_color=('white', 'firebrick4'), pad=((15, 0), 0), size=(9,1)),
sg.Spin([x + 1 for x in range(10)], 1, key='_spin_')]]
sg.Spin([x + 1 for x in range(10)], 3, key='_spin_')]]
# Layout the rows of the Window
window = sg.Window('CPU Meter',
no_titlebar=True,
keep_on_top=True,
grab_anywhere=True).Layout(layout)
grab_anywhere=True).Layout(layout).Finalize()
# ---------------- main loop ----------------
interval = 10 # For the first one, make it quick
while (True):
# --------- Read and update window --------
event, values = window.ReadNonBlocking()
event, values = window.Read(timeout=interval)
# --------- Do Button Operations --------
if values is None or event == 'Exit':
if event is None or event == 'Exit':
break
try:
interval = int(values['_spin_'])
except:
interval = 1
cpu_percent = psutil.cpu_percent(interval=interval)
interval = int(values['_spin_'])*1000
cpu_percent = psutil.cpu_percent(interval=1)
# --------- Display timer in window --------

19
Demo_Desktop_Widget_Timer.py
View file

@ -1,6 +1,5 @@
#!/usr/bin/env python
import sys
import sys
if sys.version_info[0] >= 3:
import PySimpleGUI as sg
else:
@ -8,7 +7,15 @@ else:
import time
"""
Timer Desktop Widget Creates a floating timer that is always on top of other windows You move it by grabbing anywhere on the window Good example of how to do a non-blocking, polling program using PySimpleGUI Can be used to poll hardware when running on a Pi NOTE - you will get a warning message printed when you exit using exit button.
Timer Desktop Widget Creates a floating timer that is always on top of other windows You move it by grabbing anywhere on the window Good example of how to do a non-blocking, polling program using SimpleGUI Can be used to poll hardware when running on a Pi
While the timer ticks are being generated by PySimpleGUI's "timeout" mechanism, the actual value
of the timer that is displayed comes from the system timer, time.time(). This guarantees an
accurate time value is displayed regardless of the accuracy of the PySimpleGUI timer tick. If
this design were not used, then the time value displayed would slowly drift by the amount of time
it takes to execute the PySimpleGUI read and update calls (not good!)
NOTE - you will get a warning message printed when you exit using exit button.
It will look something like: invalid command name \"1616802625480StopMove\"
"""
@ -32,14 +39,14 @@ start_time = int(round(time.time() * 100))
while (True):
# --------- Read and update window --------
if not paused:
event, values = window.ReadNonBlocking()
event, values = window.Read(timeout=10)
current_time = int(round(time.time() * 100)) - start_time
else:
event, values = window.Read()
if event == 'button':
event = window.FindElement(event).GetText()
# --------- Do Button Operations --------
if values is None or event == 'Exit':
if event is None or event == 'Exit': # ALWAYS give a way out of program
break
if event is 'Reset':
start_time = int(round(time.time() * 100))
@ -60,9 +67,5 @@ while (True):
window.FindElement('text').Update('{:02d}:{:02d}.{:02d}'.format((current_time // 100) // 60,
(current_time // 100) % 60,
current_time % 100))
time.sleep(.01)
# --------- After loop --------
# Broke out of main loop. Close the window.
window.CloseNonBlocking()