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# GTK Spreadsheet

Example of embedding matplotlib in an application and interacting with a treeview to store data. Double click on an entry to update plot data

    import pygtk
    pygtk.require('2.0')
    import gtk
    from gtk import gdk

    import matplotlib
    matplotlib.use('GTKAgg')  # or 'GTK'
    from matplotlib.backends.backend_gtk import FigureCanvasGTK as FigureCanvas

    from numpy.random import random
    from matplotlib.figure import Figure

    class DataManager(gtk.Window):
        numRows, numCols = 20, 10

        data = random((numRows, numCols))

        def __init__(self):
            gtk.Window.__init__(self)
            self.set_default_size(600, 600)
            self.connect('destroy', lambda win: gtk.main_quit())

            self.set_title('GtkListStore demo')
            self.set_border_width(8)

            vbox = gtk.VBox(False, 8)
            self.add(vbox)

            label = gtk.Label('Double click a row to plot the data')

            vbox.pack_start(label, False, False)

            sw = gtk.ScrolledWindow()
            sw.set_shadow_type(gtk.SHADOW_ETCHED_IN)
            sw.set_policy(gtk.POLICY_NEVER,
                          gtk.POLICY_AUTOMATIC)
            vbox.pack_start(sw, True, True)

            model = self.create_model()

            self.treeview = gtk.TreeView(model)
            self.treeview.set_rules_hint(True)

            # matplotlib stuff
            fig = Figure(figsize=(6, 4))

            self.canvas = FigureCanvas(fig)  # a gtk.DrawingArea
            vbox.pack_start(self.canvas, True, True)
            ax = fig.add_subplot(111)
            self.line, = ax.plot(self.data[0, :], 'go')  # plot the first row

            self.treeview.connect('row-activated', self.plot_row)
            sw.add(self.treeview)

            self.add_columns()

            self.add_events(gdk.BUTTON_PRESS_MASK |
                            gdk.KEY_PRESS_MASK |
                            gdk.KEY_RELEASE_MASK)

        def plot_row(self, treeview, path, view_column):
            ind, = path  # get the index into data
            points = self.data[ind, :]
            self.line.set_ydata(points)
            self.canvas.draw()

        def add_columns(self):
            for i in range(self.numCols):
                column = gtk.TreeViewColumn('%d' % i, gtk.CellRendererText(), text=i)
                self.treeview.append_column(column)

        def create_model(self):
            types = [float]*self.numCols
            store = gtk.ListStore(*types)

            for row in self.data:
                store.append(row)
            return store

    manager = DataManager()
    manager.show_all()
    gtk.main()

Total running time of the script: ( 0 minutes 0.000 seconds)

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