Renamed demo

DemoPrograms/Demo_Desktop_Widget_CPU_Top_Processes.py

@@ -0,0 +1,101 @@
+#!/usr/bin/env python
+import PySimpleGUI as sg
+import psutil
+import time
+from threading import Thread
+import operator
+
+
+"""
+    PSUTIL Desktop Widget
+    Creates a floating CPU utilization window 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
+    Use the spinner to adjust the number of seconds between readings of the CPU utilizaiton
+
+    NOTE - you will get a warning message printed when you exit using exit button.
+    It will look something like:
+            invalid command name "1616802625480StopMove"
+"""
+
+# globale used to communicate with thread.. yea yea... it's working fine
+g_interval = 1
+g_cpu_percent = 0
+g_procs = None
+g_exit = False
+
+
+def CPU_thread(args):
+    global g_interval, g_cpu_percent, g_procs, g_exit
+
+    while not g_exit:
+        try:
+            g_cpu_percent = psutil.cpu_percent(interval=g_interval)
+            g_procs = psutil.process_iter()
+        except:
+            pass
+
+
+def main():
+    global g_interval,  g_procs, g_exit
+
+    # ----------------  Create Form  ----------------
+    sg.theme('Black')
+    layout = [
+        [sg.Text('', size=(8, 1), font=('Helvetica', 20),
+              text_color=sg.YELLOWS[0], justification='center', key='text')],
+        [sg.Text('', size=(30, 8), font=('Courier New', 12),
+              text_color='white', justification='left', key='processes')],
+        [sg.Text('Update every '),
+         sg.Spin([x+1 for x in range(10)], 3, key='spin'), sg.T('seconds       '),
+         sg.Text('❎', enable_events=True, key='Exit')
+         ]
+    ]
+
+    window = sg.Window('Top CPU Processes', layout,
+                       no_titlebar=True, keep_on_top=True, use_default_focus=False, alpha_channel=.8, grab_anywhere=True)
+
+    # 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.read(timeout_value)
+        # --------- Do Button Operations --------
+        if event in (sg.WIN_CLOSED, 'Exit'):
+            break
+
+        timeout_value = int(values['spin']) * 1000      # for now on, use spinner for timeout
+
+        cpu_percent = g_cpu_percent
+        display_string = ''
+        if g_procs:
+            # --------- Create list of top % CPU porocesses --------
+            try:
+                top = {proc.name(): proc.cpu_percent() for proc in g_procs}
+            except:
+                pass
+
+            top_sorted = sorted(
+                top.items(), key=operator.itemgetter(1), reverse=True)
+            if top_sorted:
+                top_sorted.pop(0)
+            display_string = ''
+            for proc, cpu in top_sorted:
+                display_string += '{:2.2f} {}\n'.format(cpu/10, proc)
+
+        # --------- Display timer and proceses in window --------
+        window['text'].update('CPU ' + str(cpu_percent))
+        window['processes'].update(display_string)
+
+    g_exit = True
+    thread.join()
+
+    window.close()
+
+
+if __name__ == "__main__":
+    main()