GTK电子表格

在应用程序中嵌入matplotlib并与treeview交互以存储数据的示例。双击条目以更新绘图数据。

  1. import gi
  2. gi.require_version('Gtk', '3.0')
  3. gi.require_version('Gdk', '3.0')
  4. from gi.repository import Gtk, Gdk
  6. from matplotlib.backends.backend_gtk3agg import FigureCanvas
  7. # from matplotlib.backends.backend_gtk3cairo import FigureCanvas
  9. from numpy.random import random
  10. from matplotlib.figure import Figure
  13. class DataManager(Gtk.Window):
  14.     numRows, numCols = 20, 10
  16.     data = random((numRows, numCols))
  18.     def __init__(self):
  19.         Gtk.Window.__init__(self)
  20.         self.set_default_size(600, 600)
  21.         self.connect('destroy', lambda win: Gtk.main_quit())
  23.         self.set_title('GtkListStore demo')
  24.         self.set_border_width(8)
  26.         vbox = Gtk.VBox(False, 8)
  27.         self.add(vbox)
  29.         label = Gtk.Label('Double click a row to plot the data')
  31.         vbox.pack_start(label, False, False, 0)
  33.         sw = Gtk.ScrolledWindow()
  34.         sw.set_shadow_type(Gtk.ShadowType.ETCHED_IN)
  35.         sw.set_policy(Gtk.PolicyType.NEVER,
  36.                       Gtk.PolicyType.AUTOMATIC)
  37.         vbox.pack_start(sw, True, True, 0)
  39.         model = self.create_model()
  41.         self.treeview = Gtk.TreeView(model)
  42.         self.treeview.set_rules_hint(True)
  44.         # matplotlib stuff
  45.         fig = Figure(figsize=(6, 4))
  47.         self.canvas = FigureCanvas(fig)  # a Gtk.DrawingArea
  48.         vbox.pack_start(self.canvas, True, True, 0)
  49.         ax = fig.add_subplot(111)
  50.         self.line, = ax.plot(self.data[0, :], 'go')  # plot the first row
  52.         self.treeview.connect('row-activated', self.plot_row)
  53.         sw.add(self.treeview)
  55.         self.add_columns()
  57.         self.add_events(Gdk.EventMask.BUTTON_PRESS_MASK |
  58.                         Gdk.EventMask.KEY_PRESS_MASK |
  59.                         Gdk.EventMask.KEY_RELEASE_MASK)
  61.     def plot_row(self, treeview, path, view_column):
  62.         ind, = path  # get the index into data
  63.         points = self.data[ind, :]
  64.         self.line.set_ydata(points)
  65.         self.canvas.draw()
  67.     def add_columns(self):
  68.         for i in range(self.numCols):
  69.             column = Gtk.TreeViewColumn(str(i), Gtk.CellRendererText(), text=i)
  70.             self.treeview.append_column(column)
  72.     def create_model(self):
  73.         types = [float]*self.numCols
  74.         store = Gtk.ListStore(*types)
  76.         for row in self.data:
  77.             store.append(tuple(row))
  78.         return store
  81. manager = DataManager()
  82. manager.show_all()
  83. Gtk.main()

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