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Commit3221c94

Browse files
lazkatimhoffm
authored andcommitted
Drop pgi support for the GTK3 backend (#13014)
It's incomplete and unmaintained and PyGObject is pip installable nowand supports Ubuntu Xenial which is used on Travis-CI.matplotlib should preferably test with things that are actually used by end users.
1 parent66b3b83 commit3221c94

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9 files changed

+34
-77
lines changed

9 files changed

+34
-77
lines changed

‎.travis.yml

Lines changed: 9 additions & 5 deletions
Original file line numberDiff line numberDiff line change
@@ -29,11 +29,14 @@ addons:
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-graphviz
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-inkscape
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-libcairo2
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-libcairo2-dev
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-libffi-dev
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-libgeos-dev
33-
-libgirepository-1.0.1
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-libgirepository1.0-dev
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-lmodern
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-otf-freefont
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-pgf
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-pkg-config
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-texlive-fonts-recommended
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-texlive-latex-base
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-texlive-latex-extra
@@ -132,10 +135,11 @@ install:
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# install was successful by trying to import the toolkit (sometimes, the
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# install appears to be successful but shared libraries cannot be loaded at
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# runtime, so an actual import is a better check).
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python -mpip install --upgrade cairocffi>=0.8 pgi>=0.0.11.2 &&
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python -c 'import pgi as gi; gi.require_version("Gtk", "3.0"); from pgi.repository import Gtk' &&
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echo 'pgi is available' ||
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echo 'pgi is not available'
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python -mpip install --upgrade pycairo cairocffi>=0.8
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python -mpip install --upgrade PyGObject &&
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python -c 'import gi; gi.require_version("Gtk", "3.0"); from gi.repository import Gtk' &&
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echo 'PyGObject is available' ||
142+
echo 'PyGObject is not available'
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python -mpip install --upgrade pyqt5 &&
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python -c 'import PyQt5.QtCore' &&
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echo 'PyQt5 is available' ||

‎INSTALL.rst

Lines changed: 1 addition & 2 deletions
Original file line numberDiff line numberDiff line change
@@ -152,8 +152,7 @@ optional Matplotlib backends and the capabilities they provide.
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`PySide<https://pypi.org/project/PySide>`_ (>= 1.0.3): for the Qt4-based
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backends;
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* `PyQt5<https://pypi.org/project/PyQt5>`_: for the Qt5-based backends;
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* `PyGObject<https://pypi.org/project/PyGObject/>`_ or
156-
`pgi<https://pypi.org/project/pgi/>`_ (>= 0.0.11.2): for the GTK3-based
155+
* `PyGObject<https://pypi.org/project/PyGObject/>`_: for the GTK3-based
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backends;
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*:term:`wxpython` (>= 4): for the WX-based backends;
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* `cairocffi<https://cairocffi.readthedocs.io/en/latest/>`_ (>= 0.8) or
Lines changed: 4 additions & 0 deletions
Original file line numberDiff line numberDiff line change
@@ -0,0 +1,4 @@
1+
Drop support for ``pgi`` in the GTK3 backends
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`````````````````````````````````````````````
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``pgi``, an alternative implementation to PyGObject, is no longer supported in
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the GTK3 backends. PyGObject should be used instead.

‎doc/glossary/index.rst

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Original file line numberDiff line numberDiff line change
@@ -67,13 +67,6 @@ Glossary
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channel. PDF was designed in part as a next-generation document
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format to replace postscript
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pgi
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`pgi <https://pypi.python.org/pypi/pgi/>` exists as a relatively
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new Python wrapper to GTK3 and acts as a pure python alternative to
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PyGObject. pgi still exists in its infancy, currently missing many
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features of PyGObject. However Matplotlib does not use any of these
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missing features.
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PyGObject
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`PyGObject<http://www.pygtk.org/>`_ provides Python wrappers for the
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:term:`GTK` widgets library

‎lib/matplotlib/backends/__init__.py

Lines changed: 1 addition & 2 deletions
Original file line numberDiff line numberDiff line change
@@ -33,8 +33,7 @@ def _get_running_interactive_framework():
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orsys.modules.get("PySide.QtGui"))
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ifQtGuiandQtGui.QApplication.instance():
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return"qt4"
36-
Gtk= (sys.modules.get("gi.repository.Gtk")
37-
orsys.modules.get("pgi.repository.Gtk"))
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Gtk=sys.modules.get("gi.repository.Gtk")
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ifGtkandGtk.main_level():
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return"gtk3"
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wx=sys.modules.get("wx")

‎lib/matplotlib/backends/_gtk3_compat.py

Lines changed: 0 additions & 55 deletions
This file was deleted.

‎lib/matplotlib/backends/backend_cairo.py

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Original file line numberDiff line numberDiff line change
@@ -11,8 +11,7 @@
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importnumpyasnp
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14-
# cairocffi is more widely compatible than pycairo (in particular pgi only
15-
# works with cairocffi) so try it first.
14+
# cairocffi is more widely compatible than pycairo so try it first.
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try:
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importcairocffiascairo
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exceptImportError:

‎lib/matplotlib/backends/backend_gtk3.py

Lines changed: 16 additions & 1 deletion
Original file line numberDiff line numberDiff line change
@@ -11,7 +11,22 @@
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frommatplotlib.backend_managersimportToolManager
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frommatplotlib.figureimportFigure
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frommatplotlib.widgetsimportSubplotTool
14-
from ._gtk3_compatimportGLib,GObject,Gtk,Gdk
14+
15+
try:
16+
importgi
17+
exceptImportError:
18+
raiseImportError("The GTK3 backends require PyGObject")
19+
20+
try:
21+
# :raises ValueError: If module/version is already loaded, already
22+
# required, or unavailable.
23+
gi.require_version("Gtk","3.0")
24+
exceptValueErrorase:
25+
# in this case we want to re-raise as ImportError so the
26+
# auto-backend selection logic correctly skips.
27+
raiseImportErrorfrome
28+
29+
fromgi.repositoryimportGLib,GObject,Gtk,Gdk
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_log=logging.getLogger(__name__)

‎lib/matplotlib/tests/test_backends_interactive.py

Lines changed: 2 additions & 3 deletions
Original file line numberDiff line numberDiff line change
@@ -19,9 +19,8 @@
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def_get_testable_interactive_backends():
2020
backends= []
2121
fordeps,backendin [
22-
# gtk3agg fails on Travis, needs to be investigated.
23-
# (["cairocffi", "pgi"], "gtk3agg"),
24-
(["cairocffi","pgi"],"gtk3cairo"),
22+
(["cairo","gi"],"gtk3agg"),
23+
(["cairo","gi"],"gtk3cairo"),
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(["PyQt5"],"qt5agg"),
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(["PyQt5","cairocffi"],"qt5cairo"),
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(["tkinter"],"tkagg"),

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