Moved all demo programs into subfolder

DemoPrograms/Demo_Desktop_Widget_CPU_Utilization.py

@@ -0,0 +1,99 @@
+#!/usr/bin/env python
+import sys
+import sys
+if sys.version_info[0] >= 3:
+    import PySimpleGUI as sg
+else:
+    import PySimpleGUI27 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.ChangeLookAndFeel('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.Exit(button_color=('white', 'firebrick4'), pad=((15,0), 0), size=(9,1)),
+                  sg.Spin([x+1 for x in range(10)], 3, key='spin')],]
+
+    window = sg.Window('CPU Utilization',
+                       no_titlebar=True,
+                       keep_on_top=True,
+                       alpha_channel=.8,
+                       grab_anywhere=True).Layout(layout)
+
+    # 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=timeout_value, timeout_key='Timeout')
+        # --------- Do Button Operations --------
+        if event is None or event == 'Exit':
+            break
+
+        timeout_value = int(values['spin']) * 1000
+
+        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.FindElement('text').Update('CPU {}'.format(cpu_percent))
+        window.FindElement('processes').Update(display_string)
+
+    g_exit = True
+    thread.join()
+
+if __name__ == "__main__":
+    main()