Latest updates from Tony

ProgrammingClassExamples/MacOS versions/10c PSG Plot (axes pi format).py

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+#matplotlib, numpy, pyplot
+#Tony Crewe
+#Oct 2018 MacOS
+
+import PySimpleGUI as sg
+import matplotlib
+# added this to work with MacOs
+matplotlib.use('TkAgg')
+import matplotlib.pyplot as plt
+import matplotlib.ticker as ticker
+from matplotlib.backends.backend_tkagg import FigureCanvasAgg
+import matplotlib.backends.tkagg as tkagg
+import numpy as np
+import tkinter as tk
+
+
+
+"""
+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)
+"""
+
+def draw_figure(canvas, figure, loc = (0,0)):
+
+    figure_canvas_agg = FigureCanvasAgg(figure) 
+    figure_canvas_agg.draw()
+    figure_x, figure_y, figure_w, figure_h = figure.bbox.bounds
+    figure_w, figure_h = int(figure_w), int(figure_h)
+    photo = tk.PhotoImage(master=canvas, width=figure_w, height=figure_h)
+    canvas.create_image(loc[0] + figure_w/2, loc[1] + figure_h/2, image=photo)
+    tkagg.blit(photo, figure_canvas_agg.get_renderer()._renderer, colormode=2)
+    return photo
+
+
+#------------ Matplotlib code --------------------
+fig=plt.figure()
+ax = fig.add_subplot(111)
+x = np.linspace(-np.pi*2, np.pi*2, 100)
+y= np.sin(x)
+plt.plot(x/np.pi,y)
+
+ax.set_title('sin(x)')
+#centre bottom and left axes to zero
+
+ax.spines['left'].set_position('zero')
+ax.spines['right'].set_color('none')
+ax.spines['bottom'].set_position('zero')
+ax.spines['top'].set_color('none')
+
+#Format axes - nicer eh!
+ax.xaxis.set_major_formatter(ticker.FormatStrFormatter('%g $\pi$'))
+
+figure_x, figure_y, figure_w, figure_h = fig.bbox.bounds
+
+#------------End Matplotlib code --------------------
+
+layout = [[sg.Text('Plot Test - PySimpleGUI and Matplotlib (axes pi format)', font = ('Calibri', 18, 'bold'))],
+          [sg.Canvas(size = (figure_w, figure_h), key = '_canvas_')],
+          [sg.OK(pad=((figure_w / 2, 0), 3), size=(6, 2))]]
+
+window = sg.Window('Matplot in PySimpleGUI', force_toplevel = True).Layout(layout).Finalize()
+
+fig_photo = draw_figure(window.FindElement('_canvas_').TKCanvas, fig)
+
+button, value = window.Read()
+
+