72 lines
2.2 KiB
Python
72 lines
2.2 KiB
Python
import PySimpleGUI as g
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import matplotlib
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matplotlib.use('TkAgg')
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from numpy import arange, sin, pi
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from matplotlib.backends.backend_tkagg import FigureCanvasTkAgg, FigureCanvasAgg
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from matplotlib.figure import Figure
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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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Demonstrates one way of embedding Matplotlib figures into a PySimpleGUI window.
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Basic steps are:
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* Create a Canvas Element
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* Layout form
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* Display form (NON BLOCKING)
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* Draw plots onto convas
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* Display form (BLOCKING)
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"""
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def draw_figure(canvas, figure, loc=(0, 0)):
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""" Draw a matplotlib figure onto a Tk canvas
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loc: location of top-left corner of figure on canvas in pixels.
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Inspired by matplotlib source: lib/matplotlib/backends/backend_tkagg.py
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"""
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figure_canvas_agg = FigureCanvasAgg(figure)
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figure_canvas_agg.draw()
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figure_x, figure_y, figure_w, figure_h = figure.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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# Position: convert from top-left anchor to center anchor
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canvas.create_image(loc[0] + figure_w/2, loc[1] + figure_h/2, image=photo)
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# Unfortunately, there's no accessor for the pointer to the native renderer
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tkagg.blit(photo, figure_canvas_agg.get_renderer()._renderer, colormode=2)
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# Return a handle which contains a reference to the photo object
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# which must be kept live or else the picture disappears
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return photo
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f = Figure(figsize=(5, 4), dpi=100)
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a = f.add_subplot(111)
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t = arange(0.0, 3.0, 0.01)
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s = sin(2*pi*t)
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a.plot(t, s)
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a.set_title('Tk embedding')
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a.set_xlabel('X axis label')
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a.set_ylabel('Y label')
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# -------------------------------- GUI Starts Here --------------------------------
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canvas_elem = g.Canvas(size=(500, 400)) # get the canvas we'll be drawing on
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# define the form layout
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layout = [[g.Text('Plot test')],
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[canvas_elem],
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[g.OK(pad=((250,0), 3))]]
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# create the form and show it without the plot
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form = g.FlexForm('Demo Application - Embedding Matplotlib In PySimpleGUI')
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form.Layout(layout)
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form.ReadNonBlocking()
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# add the plot to the window
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fig_photo = draw_figure(canvas_elem.TKCanvas, f)
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# show it all again and get buttons
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button, values = form.Read()
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