From 1bf54c3d27e025a5d80a32e7ad15d5c6ce402396 Mon Sep 17 00:00:00 2001
From: PySimpleGUI <PySimpleGUI@PySimpleGUI.com>
Date: Mon, 27 Jan 2020 06:46:54 -0500
Subject: [PATCH] Demo - Matplotlib with toolbar embedded into GUI

---
 .../Demo_Matplotlib_Embedded_Toolbar.py       | 81 +++++++++++++++++++
 1 file changed, 81 insertions(+)
 create mode 100644 DemoPrograms/Demo_Matplotlib_Embedded_Toolbar.py

diff --git a/DemoPrograms/Demo_Matplotlib_Embedded_Toolbar.py b/DemoPrograms/Demo_Matplotlib_Embedded_Toolbar.py
new file mode 100644
index 00000000..d593a22c
--- /dev/null
+++ b/DemoPrograms/Demo_Matplotlib_Embedded_Toolbar.py
@@ -0,0 +1,81 @@
+import PySimpleGUI as sg
+import numpy as np
+
+"""
+    Embedding the Matplotlib toolbar into your application
+
+"""
+
+# ------------------------------- This is to include a matplotlib figure in a Tkinter canvas
+import matplotlib.pyplot as plt
+from matplotlib.backends.backend_tkagg import FigureCanvasTkAgg, NavigationToolbar2Tk
+
+
+def draw_figure_w_toolbar(canvas, fig, canvas_toolbar):
+    if canvas.children:
+        for child in canvas.winfo_children():
+            child.destroy()
+    if canvas_toolbar.children:
+        for child in canvas_toolbar.winfo_children():
+            child.destroy()
+    figure_canvas_agg = FigureCanvasTkAgg(fig, master=canvas)
+    figure_canvas_agg.draw()
+    toolbar = Toolbar(figure_canvas_agg, canvas_toolbar)
+    toolbar.update()
+    figure_canvas_agg.get_tk_widget().pack(side='right', fill='both', expand=1)
+
+
+class Toolbar(NavigationToolbar2Tk):
+    def __init__(self, *args, **kwargs):
+        super(Toolbar, self).__init__(*args, **kwargs)
+
+
+# ------------------------------- PySimpleGUI CODE
+
+layout = [
+    [sg.T('Graph: y=sin(x)')],
+    [sg.B('Plot'), sg.B('Exit')],
+    [sg.T('Controls:')],
+    [sg.Canvas(key='controls_cv')],
+    [sg.T('Figure:')],
+    [sg.Column(
+        layout=[
+            [sg.Canvas(key='fig_cv',
+                       # it's important that you set this size
+                       size=(400 * 2, 400)
+                       )]
+        ],
+        background_color='#DAE0E6',
+        pad=(0, 0)
+    )],
+    [sg.B('Alive?')]
+
+]
+
+window = sg.Window('Graph with controls', layout)
+
+while True:
+    event, values = window.read()
+    print(event, values)
+    if event in (None, 'Exit'):  # always,  always give a way out!
+        break
+    elif event is 'Plot':
+        # ------------------------------- PASTE YOUR MATPLOTLIB CODE HERE
+        plt.figure(1)
+        fig = plt.gcf()
+        DPI = fig.get_dpi()
+        # ------------------------------- you have to play with this size to reduce the movement error when the mouse hovers over the figure, it's close to canvas size
+        fig.set_size_inches(404 * 2 / float(DPI), 404 / float(DPI))
+        # -------------------------------
+        x = np.linspace(0, 2 * np.pi)
+        y = np.sin(x)
+        plt.plot(x, y)
+        plt.title('y=sin(x)')
+        plt.xlabel('X')
+        plt.ylabel('Y')
+        plt.grid()
+
+        # ------------------------------- Instead of plt.show()
+        draw_figure_w_toolbar(window['fig_cv'].TKCanvas, fig, window['controls_cv'].TKCanvas)
+
+window.close()