Remove deprecated backends.

Author: QuLogic

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;

doc/api/backend_gtkagg_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

doc/api/backend_gtkcairo_api.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

doc/api/index_backend_api.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

doc/glossary/index.rst

@@ -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

doc/users/shell.rst

@@ -20,7 +20,7 @@
 ax.set_xlim(-2, 2)
 ax.set_ylim(-2, 2)
 
-# set useblit = True on gtkagg for enhanced performance
+# Set useblit=True on some backends for enhanced performance.
 cursor = Cursor(ax, useblit=True, color='red', linewidth=2)
 
 plt.show()

examples/event_handling/ginput_manual_clabel_sgskip.py

@@ -38,7 +38,7 @@ def onselect(xmin, xmax):
     ax2.set_ylim(thisy.min(), thisy.max())
     fig.canvas.draw()
 
-# set useblit True on gtkagg for enhanced performance
+# Set useblit=True on some backends for enhanced performance.
 span = SpanSelector(ax1, onselect, 'horizontal', useblit=True,
                     rectprops=dict(alpha=0.5, facecolor='red'))
 

examples/widgets/cursor.py

@@ -1,6 +1,4 @@
 # TODO:
-# * Loop Delay is broken on GTKAgg. This is because source_remove() is not
-#   working as we want. PyGTK bug?
 # * Documentation -- this will need a new section of the User's Guide.
 #      Both for Animations and just timers.
 #   - Also need to update http://www.scipy.org/Cookbook/Matplotlib/Animations