matplotlib · efiring · Mar 5, 2018 · Feb 12, 2018 · Feb 12, 2018 · Feb 12, 2018
diff --git a/INSTALL.rst b/INSTALL.rst
@@ -159,7 +159,6 @@ optional Matplotlib backends and the capabilities they provide.
   * `PyQt4 <https://pypi.python.org/pypi/PyQt4>`_ (>= 4.4) or
     `PySide <https://pypi.python.org/pypi/PySide>`_: for the Qt4Agg backend;
   * `PyQt5 <https://pypi.python.org/pypi/PyQt5>`_: for the Qt5Agg backend;
-  * :term:`pygtk` (>= 2.4): for the GTK and the GTKAgg backend;
   * :term:`wxpython` (>= 2.9 or later): for the WX or WXAgg backend;
   * `cairocffi <https://cairocffi.readthedocs.io/en/latest/>`__ (>=
     v0.8): for cairo based backends;

diff --git a/MANIFEST.in b/MANIFEST.in
@@ -4,7 +4,6 @@ include pytest.ini
 include Makefile MANIFEST.in
 include matplotlibrc.template setup.cfg.template
 include setupext.py setup.py distribute_setup.py
-include lib/matplotlib/mpl-data/lineprops.glade
 include lib/matplotlib/mpl-data/matplotlibrc
 include lib/matplotlib/mpl-data/images/*
 include lib/matplotlib/mpl-data/fonts/ttf/*

diff --git a/doc/api/backend_gtkagg_api.rst b/doc/api/backend_gtkagg_api.rst
diff --git a/doc/api/backend_gtkcairo_api.rst b/doc/api/backend_gtkcairo_api.rst
diff --git a/doc/api/index_backend_api.rst b/doc/api/index_backend_api.rst
@@ -10,8 +10,6 @@ backends
    backend_tools_api.rst
    backend_agg_api.rst
    backend_cairo_api.rst
-   backend_gtkagg_api.rst
-   backend_gtkcairo_api.rst
    backend_gtk3agg_api.rst
    backend_gtk3cairo_api.rst
    backend_nbagg_api.rst

diff --git a/doc/api/next_api_changes/2018-02-16-ES-removals.rst b/doc/api/next_api_changes/2018-02-16-ES-removals.rst
@@ -0,0 +1,9 @@
+Removal of deprecated backends
+------------------------------
+
+Deprecated backends have been removed:
+
+    * GTKAgg
+    * GTKCairo
+    * GTK
+    * GDK
diff --git a/doc/glossary/index.rst b/doc/glossary/index.rst
@@ -74,16 +74,9 @@ Glossary
       features of PyGObject.  However Matplotlib does not use any of these
       missing features.
 
-  pygtk
-      `pygtk <http://www.pygtk.org/>`_ provides python wrappers for
-      the :term:`GTK` widgets library for use with the GTK or GTKAgg
-      backend.  Widely used on linux, and is often packages as
-      'python-gtk2'
-
   PyGObject
-      Like :term:`pygtk`, `PyGObject <http://www.pygtk.org/>` provides
-      python wrappers for the :term:`GTK` widgets library; unlike pygtk,
-      PyGObject wraps GTK3 instead of the now obsolete GTK2.
+      `PyGObject <http://www.pygtk.org/>`_ provides Python wrappers for the
+      :term:`GTK` widgets library
 
   pyqt
       `pyqt <https://wiki.python.org/moin/PyQt>`_ provides python

diff --git a/doc/users/navigation_toolbar.rst b/doc/users/navigation_toolbar.rst
@@ -109,31 +109,34 @@ automatically for every figure.  If you are writing your own user
 interface code, you can add the toolbar as a widget.  The exact syntax
 depends on your UI, but we have examples for every supported UI in the
 ``matplotlib/examples/user_interfaces`` directory.  Here is some
-example code for GTK::
+example code for GTK+ 3::
 
 
-    import gtk
+    import gi
+    gi.require_version('Gtk', '3.0')
+    from gi.repository import Gtk
 
     from matplotlib.figure import Figure
-    from matplotlib.backends.backend_gtkagg import FigureCanvasGTKAgg as FigureCanvas
-    from matplotlib.backends.backend_gtkagg import NavigationToolbar2GTKAgg as NavigationToolbar
+    from matplotlib.backends.backend_gtk3agg import FigureCanvas
+    from matplotlib.backends.backend_gtk3 import (
+        NavigationToolbar2GTK3 as NavigationToolbar)
 
-    win = gtk.Window()
-    win.connect("destroy", lambda x: gtk.main_quit())
+    win = Gtk.Window()
+    win.connect("destroy", lambda x: Gtk.main_quit())
     win.set_default_size(400,300)
     win.set_title("Embedding in GTK")
 
-    vbox = gtk.VBox()
+    vbox = Gtk.VBox()
     win.add(vbox)
 
     fig = Figure(figsize=(5,4), dpi=100)
     ax = fig.add_subplot(111)
     ax.plot([1,2,3])
 
-    canvas = FigureCanvas(fig)  # a gtk.DrawingArea
-    vbox.pack_start(canvas)
+    canvas = FigureCanvas(fig)  # a Gtk.DrawingArea
+    vbox.pack_start(canvas, True, True, 0)
     toolbar = NavigationToolbar(canvas, win)
-    vbox.pack_start(toolbar, False, False)
+    vbox.pack_start(toolbar, False, False, 0)
 
     win.show_all()
-    gtk.main()
+    Gtk.main()
diff --git a/doc/users/shell.rst b/doc/users/shell.rst
@@ -100,7 +100,7 @@ up python.  Then::
   >>> xlabel('hi mom')
 
 should work out of the box.  This is also likely to work with recent
-versions of the qt4agg and gtkagg backends, and with the macosx backend
+versions of the qt4agg and gtk3agg backends, and with the macosx backend
 on the Macintosh. Note, in batch mode,
 i.e. when making
 figures from scripts, interactive mode can be slow since it redraws

diff --git a/examples/event_handling/ginput_manual_clabel_sgskip.py b/examples/event_handling/ginput_manual_clabel_sgskip.py
@@ -7,7 +7,7 @@
 waitforbuttonpress and manual clabel placement.
 
 This script must be run interactively using a backend that has a
-graphical user interface (for example, using GTKAgg backend, but not
+graphical user interface (for example, using GTK3Agg backend, but not
 PS backend).
 
 See also ginput_demo.py

diff --git a/examples/user_interfaces/embedding_in_gtk2_sgskip.py b/examples/user_interfaces/embedding_in_gtk2_sgskip.py
diff --git a/examples/user_interfaces/embedding_in_gtk3_panzoom_sgskip.py b/examples/user_interfaces/embedding_in_gtk3_panzoom_sgskip.py
@@ -6,6 +6,8 @@
 Demonstrate NavigationToolbar with GTK3 accessed via pygobject.
 """
 
+import gi
+gi.require_version('Gtk', '3.0')
 from gi.repository import Gtk
 
 from matplotlib.backends.backend_gtk3 import (

diff --git a/examples/user_interfaces/embedding_in_gtk3_sgskip.py b/examples/user_interfaces/embedding_in_gtk3_sgskip.py
@@ -7,6 +7,8 @@
 GTK3 accessed via pygobject.
 """
 
+import gi
+gi.require_version('Gtk', '3.0')
 from gi.repository import Gtk
 
 from matplotlib.backends.backend_gtk3agg import (

diff --git a/examples/user_interfaces/embedding_in_gtk_sgskip.py b/examples/user_interfaces/embedding_in_gtk_sgskip.py
diff --git a/examples/user_interfaces/gtk_spreadsheet_sgskip.py b/examples/user_interfaces/gtk_spreadsheet_sgskip.py
@@ -8,55 +8,54 @@
 data
 
 """
-import pygtk
-pygtk.require('2.0')
-import gtk
-from gtk import gdk
+import gi
+gi.require_version('Gtk', '3.0')
+gi.require_version('Gdk', '3.0')
+from gi.repository import Gtk, Gdk
 
-import matplotlib
-matplotlib.use('GTKAgg')  # or 'GTK'
-from matplotlib.backends.backend_gtk import FigureCanvasGTK as FigureCanvas
+from matplotlib.backends.backend_gtk3agg import FigureCanvas
+# from matplotlib.backends.backend_gtk3cairo import FigureCanvas
 
 from numpy.random import random
 from matplotlib.figure import Figure
 
 
-class DataManager(gtk.Window):
+class DataManager(Gtk.Window):
     numRows, numCols = 20, 10
 
     data = random((numRows, numCols))
 
     def __init__(self):
-        gtk.Window.__init__(self)
+        Gtk.Window.__init__(self)
         self.set_default_size(600, 600)
-        self.connect('destroy', lambda win: gtk.main_quit())
+        self.connect('destroy', lambda win: Gtk.main_quit())
 
         self.set_title('GtkListStore demo')
         self.set_border_width(8)
 
-        vbox = gtk.VBox(False, 8)
+        vbox = Gtk.VBox(False, 8)
         self.add(vbox)
 
-        label = gtk.Label('Double click a row to plot the data')
+        label = Gtk.Label('Double click a row to plot the data')
 
-        vbox.pack_start(label, False, False)
+        vbox.pack_start(label, False, False, 0)
 
-        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)
+        sw = Gtk.ScrolledWindow()
+        sw.set_shadow_type(Gtk.ShadowType.ETCHED_IN)
+        sw.set_policy(Gtk.PolicyType.NEVER,
+                      Gtk.PolicyType.AUTOMATIC)
+        vbox.pack_start(sw, True, True, 0)
 
         model = self.create_model()
 
-        self.treeview = gtk.TreeView(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)
+        self.canvas = FigureCanvas(fig)  # a Gtk.DrawingArea
+        vbox.pack_start(self.canvas, True, True, 0)
         ax = fig.add_subplot(111)
         self.line, = ax.plot(self.data[0, :], 'go')  # plot the first row
 
@@ -65,9 +64,9 @@ def __init__(self):
 
         self.add_columns()
 
-        self.add_events(gdk.BUTTON_PRESS_MASK |
-                        gdk.KEY_PRESS_MASK |
-                        gdk.KEY_RELEASE_MASK)
+        self.add_events(Gdk.EventMask.BUTTON_PRESS_MASK |
+                        Gdk.EventMask.KEY_PRESS_MASK |
+                        Gdk.EventMask.KEY_RELEASE_MASK)
 
     def plot_row(self, treeview, path, view_column):
         ind, = path  # get the index into data
@@ -77,18 +76,18 @@ def plot_row(self, treeview, path, view_column):
 
     def add_columns(self):
         for i in range(self.numCols):
-            column = gtk.TreeViewColumn('%d' % i, gtk.CellRendererText(), text=i)
+            column = Gtk.TreeViewColumn(str(i), Gtk.CellRendererText(), text=i)
             self.treeview.append_column(column)
 
     def create_model(self):
         types = [float]*self.numCols
-        store = gtk.ListStore(*types)
+        store = Gtk.ListStore(*types)
 
         for row in self.data:
-            store.append(row)
+            store.append(tuple(row))
         return store
 
 
 manager = DataManager()
 manager.show_all()
-gtk.main()
+Gtk.main()
diff --git a/examples/user_interfaces/lineprops_dialog_gtk_sgskip.py b/examples/user_interfaces/lineprops_dialog_gtk_sgskip.py