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"""
=============
Embed in GTK4
=============
Demonstrate adding a FigureCanvasGTK4Agg widget to a Gtk.ScrolledWindow using
GTK4 accessed via pygobject.
"""
import gi
gi.require_version('Gtk', '4.0')
from gi.repository import Gtk
import numpy as np
from matplotlib.backends.backend_gtk4agg import \
FigureCanvasGTK4Agg as FigureCanvas
from matplotlib.figure import Figure
def on_activate(app):
win = Gtk.ApplicationWindow(application=app)
win.set_default_size(400, 300)
win.set_title("Embedded in GTK4")
fig = Figure(figsize=(5, 4), dpi=100)
ax = fig.add_subplot()
t = np.arange(0.0, 3.0, 0.01)
s = np.sin(2*np.pi*t)
ax.plot(t, s)
# A scrolled margin goes outside the scrollbars and viewport.
sw = Gtk.ScrolledWindow(margin_top=10, margin_bottom=10,
margin_start=10, margin_end=10)
win.set_child(sw)
canvas = FigureCanvas(fig) # a Gtk.DrawingArea
canvas.set_size_request(800, 600)
sw.set_child(canvas)
win.show()
app = Gtk.Application(application_id='org.matplotlib.examples.EmbeddingInGTK4')
app.connect('activate', on_activate)
app.run(None)
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