Moved all demo programs into subfolder

DemoPrograms/Demo_Desktop_Widget_CPU_Graph.py

@@ -0,0 +1,79 @@
+#!/usr/bin/env python
+import sys
+import sys
+if sys.version_info[0] >= 3:
+    import PySimpleGUI as sg
+else:
+    import PySimpleGUI27 as sg
+import time
+import random
+import psutil
+from threading import Thread
+
+
+STEP_SIZE=3
+SAMPLES = 300
+SAMPLE_MAX = 500
+CANVAS_SIZE = (300,200)
+
+
+g_interval = .25
+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_exit, g_response_time
+    # start ping measurement thread
+
+    sg.ChangeLookAndFeel('Black')
+    sg.SetOptions(element_padding=(0,0))
+
+    layout = [  [sg.Quit( button_color=('white','black')), sg.T('', pad=((100,0),0), font='Any 15', key='output')],
+               [sg.Graph(CANVAS_SIZE, (0,0), (SAMPLES,SAMPLE_MAX),background_color='black', key='graph')],]
+
+    window = sg.Window('CPU Graph', grab_anywhere=True, keep_on_top=True, background_color='black', no_titlebar=True, use_default_focus=False).Layout(layout)
+
+    graph = window.FindElement('graph')
+    output = window.FindElement('output')
+    # start cpu measurement thread
+    thread = Thread(target=CPU_thread,args=(None,))
+    thread.start()
+
+    last_cpu = i = 0
+    prev_x, prev_y = 0, 0
+    while True:                                 # the Event Loop
+        time.sleep(.5)
+        event, values = window.Read(timeout=0)
+        if event == 'Quit' or event is None:  # always give ths user a way out
+            break
+        # do CPU measurement and graph it
+        current_cpu = int(g_cpu_percent*10)
+        if current_cpu == last_cpu:
+            continue
+        output.Update(current_cpu/10)           # show current cpu usage at top
+        if current_cpu > SAMPLE_MAX:
+            current_cpu = SAMPLE_MAX
+        new_x, new_y = i, current_cpu
+        if i >= SAMPLES:
+            graph.Move(-STEP_SIZE,0)            # shift graph over if full of data
+            prev_x = prev_x - STEP_SIZE
+        graph.DrawLine((prev_x, prev_y), (new_x, new_y), color='white')
+        prev_x, prev_y = new_x, new_y
+        i += STEP_SIZE if i < SAMPLES else 0
+        last_cpu = current_cpu
+
+    g_exit = True
+    window.Close()
+if __name__ == '__main__':
+    main()