109 lines
4.2 KiB
Python
109 lines
4.2 KiB
Python
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#!/usr/bin/env python
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import sys
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if sys.version_info[0] >= 3:
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import PySimpleGUI as sg
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else:
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import PySimpleGUI27 as sg
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import matplotlib.pyplot as plt
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import ping
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from matplotlib.backends.backend_tkagg import FigureCanvasTkAgg, FigureCanvasAgg
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import matplotlib.backends.tkagg as tkagg
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import tkinter as tk
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#================================================================================
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# Globals
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# These are needed because callback functions are used.
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# Need to retain state across calls
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#================================================================================
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class MyGlobals:
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axis_pings = None
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ping_x_array = []
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ping_y_array = []
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g_my_globals = MyGlobals()
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#================================================================================
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# Performs *** PING! ***
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#================================================================================
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def run_a_ping_and_graph():
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global g_my_globals # graphs are global so that can be retained across multiple calls to this callback
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#===================== Do the ping =====================#
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response = ping.quiet_ping('google.com',timeout=1000)
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if response[0] == 0:
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ping_time = 1000
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else:
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ping_time = response[0]
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#===================== Store current ping in historical array =====================#
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g_my_globals.ping_x_array.append(len(g_my_globals.ping_x_array))
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g_my_globals.ping_y_array.append(ping_time)
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# ===================== Only graph last 100 items =====================#
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if len(g_my_globals.ping_x_array) > 100:
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x_array = g_my_globals.ping_x_array[-100:]
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y_array = g_my_globals.ping_y_array[-100:]
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else:
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x_array = g_my_globals.ping_x_array
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y_array = g_my_globals.ping_y_array
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# ===================== Call graphinc functions =====================#
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g_my_globals.axis_ping.clear() # clear before graphing
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g_my_globals.axis_ping.plot(x_array,y_array) # graph the ping values
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#================================================================================
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# Function: Set graph titles and Axis labels
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# Sets the text for the subplots
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# Have to do this in 2 places... initially when creating and when updating
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# So, putting into a function so don't have to duplicate code
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#================================================================================
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def set_chart_labels():
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global g_my_globals
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g_my_globals.axis_ping.set_xlabel('Time')
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g_my_globals.axis_ping.set_ylabel('Ping (ms)')
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g_my_globals.axis_ping.set_title('Current Ping Duration', fontsize = 12)
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def draw(fig, canvas):
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# Magic code that draws the figure onto the Canvas Element's canvas
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figure_x, figure_y, figure_w, figure_h = fig.bbox.bounds
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figure_w, figure_h = int(figure_w), int(figure_h)
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photo = tk.PhotoImage(master=canvas, width=figure_w, height=figure_h)
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canvas.create_image(640 / 2, 480 / 2, image=photo)
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figure_canvas_agg = FigureCanvasAgg(fig)
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figure_canvas_agg.draw()
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tkagg.blit(photo, figure_canvas_agg.get_renderer()._renderer, colormode=2)
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return photo
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#================================================================================
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# Function: MAIN
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#================================================================================
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def main():
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global g_my_globals
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# define the form layout
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layout = [[sg.Text('Animated Ping', size=(40, 1), justification='center', font='Helvetica 20')],
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[sg.Canvas(size=(640, 480), key='canvas')],
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[sg.Button('Exit', size=(10, 2), pad=((280, 0), 3), font='Helvetica 14')]]
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# create the form and show it without the plot
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window = sg.Window('Demo Application - Embedding Matplotlib In PySimpleGUI').Layout(layout).Finalize()
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canvas_elem = window.FindElement('canvas')
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canvas = canvas_elem.TKCanvas
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fig = plt.figure()
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g_my_globals.axis_ping = fig.add_subplot(1,1,1)
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set_chart_labels()
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plt.tight_layout()
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while True:
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event, values = window.Read(timeout=0)
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if event in ('Exit', None):
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break
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run_a_ping_and_graph()
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photo = draw(fig, canvas)
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if __name__ == '__main__':
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main()
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