# https://www.mikrocontroller.net/topic/536037#7045398
# https://www.pythontutorial.net/tkinter/tkinter-matplotlib/
# https://pythonprogramming.net/how-to-embed-matplotlib-graph-tkinter-gui/
# 22.04.30 chris_

import matplotlib

from matplotlib.backends.backend_tkagg import FigureCanvasTkAgg, NavigationToolbar2Tk

from matplotlib.figure import Figure

import tkinter as tk
from tkinter import ttk

LARGE_FONT= ("Verdana", 12)

mainWindow = tk.Tk()
mainWindow.geometry("1024x640")

label = tk.Label(mainWindow, text="Graph Page!", font=LARGE_FONT)
label.place(x=20, y=20)

count=0;

def updateGraph2(canvasRef,plotRef):
	global count
	plotRef.cla() # clear graph
	plotRef.plot([1,2,30,4,5,6,7,8],[5,count,1,3,8,9,3,5])
	canvasRef.draw()
	canvasRef.get_tk_widget().pack(side=tk.TOP, fill=tk.BOTH, expand=1)
	count=count+1

#===================== GRAPH 1 ======================================
frm1 = tk.Frame(mainWindow)
frm1.place(x=200,y=60);

f = Figure(figsize=(3,2), dpi=100)
a = f.add_subplot(111)
a.plot([1,2,3,4,5,6,7,8],[1,2,1,3,8,9,3,5])

canvas = FigureCanvasTkAgg(f, master=frm1)
canvas.draw()
canvas.get_tk_widget().pack(side=tk.TOP, fill=tk.BOTH, expand=1)

#===================== GRAPH 2 ======================================
frm2 = tk.Frame(mainWindow)
frm2.place(x=300,y=380);

f2 = Figure(figsize=(3,2), dpi=100)
a2 = f2.add_subplot(111)
a2.plot([1,2,3,4,5,6,7,8],[5,6,1,3,8,9,3,5])

canvas2 = FigureCanvasTkAgg(f2, master=frm2)
canvas2.draw()
canvas2.get_tk_widget().pack(side=tk.TOP, fill=tk.BOTH, expand=1)

#===================== Button ======================================
button1 = ttk.Button(mainWindow, text="little button", command=lambda: updateGraph2(canvas2,a2))
button1.place(x=60, y=400)


mainWindow.mainloop()