#!/usr/bin/env python
from matplotlib.ticker import NullFormatter  # useful for `logit` scale
import matplotlib.pyplot as plt
import numpy as np
from matplotlib.backends.backend_tkagg import FigureCanvasTkAgg
import PySimpleGUI as sg
import matplotlib
matplotlib.use('TkAgg')

"""
Demonstrates one way of embedding Matplotlib figures into a PySimpleGUI window.

Basic steps are:
 * Create a Canvas Element
 * Layout form
 * Display form (NON BLOCKING)
 * Draw plots onto convas
 * Display form (BLOCKING)
 
 Based on information from: https://matplotlib.org/3.1.0/gallery/user_interfaces/embedding_in_tk_sgskip.html
 (Thank you Em-Bo & dirck)
"""


# ------------------------------- PASTE YOUR MATPLOTLIB CODE HERE -------------------------------

# Fixing random state for reproducibility
np.random.seed(19680801)

# make up some data in the interval ]0, 1[
y = np.random.normal(loc=0.5, scale=0.4, size=1000)
y = y[(y > 0) & (y < 1)]
y.sort()
x = np.arange(len(y))

# plot with various axes scales
plt.figure(1)

# linear
plt.subplot(221)
plt.plot(x, y)
plt.yscale('linear')
plt.title('linear')
plt.grid(True)


# log
plt.subplot(222)
plt.plot(x, y)
plt.yscale('log')
plt.title('log')
plt.grid(True)


# symmetric log
plt.subplot(223)
plt.plot(x, y - y.mean())
plt.yscale('symlog', linthreshy=0.01)
plt.title('symlog')
plt.grid(True)

# logit
plt.subplot(224)
plt.plot(x, y)
plt.yscale('logit')
plt.title('logit')
plt.grid(True)
plt.gca().yaxis.set_minor_formatter(NullFormatter())
plt.subplots_adjust(top=0.92, bottom=0.08, left=0.10, right=0.95, hspace=0.25,
                    wspace=0.35)
fig = plt.gcf()      # if using Pyplot then get the figure from the plot
figure_x, figure_y, figure_w, figure_h = fig.bbox.bounds

# ------------------------------- END OF YOUR MATPLOTLIB CODE -------------------------------

# ------------------------------- Beginning of Matplotlib helper code -----------------------


def draw_figure(canvas, figure, loc=(0, 0)):
    figure_canvas_agg = FigureCanvasTkAgg(figure, canvas)
    figure_canvas_agg.draw()
    figure_canvas_agg.get_tk_widget().pack(side='top', fill='both', expand=1)
    return figure_canvas_agg
# ------------------------------- Beginning of GUI CODE -------------------------------


# define the window layout
layout = [[sg.Text('Plot test', font='Any 18')],
          [sg.Canvas(size=(figure_w, figure_h), key='canvas')],
          [sg.OK(pad=((figure_w / 2, 0), 3), size=(4, 2))]]

# create the form and show it without the plot
window = sg.Window('Demo Application - Embedding Matplotlib In PySimpleGUI',
                   layout, finalize=True)

# add the plot to the window
fig_canvas_agg = draw_figure(window['canvas'].TKCanvas, fig)

event, values = window.read()

window.close()