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Cairo rendering for Qt5 #8771

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2abdcea
Qt5Cairo backend.
anntzer Jun 15, 2017
d4957ec
Qt4Cairo backend.
anntzer Jun 18, 2017
d2f2bc0
Update backends docs.
anntzer Jun 18, 2017
f884ffa
Update backends API docs.
anntzer Jun 18, 2017
bcb08e9
Let cairo track surface size; fix Pyside refcnt bug.
anntzer Jun 19, 2017
2eac3fa
Fix mandelbrot example.
anntzer Jun 20, 2017
138ba58
Make sure only one cairo binding is ever used; fix docs.
anntzer Jun 20, 2017
d96d104
No need to process_updates in gtk3.
anntzer Jul 23, 2017
5087c05
Qt dpi handling should be renderer-agnostic.
anntzer Aug 1, 2017
89a87d0
Fix vector output from cairo.
anntzer Aug 3, 2017
56854ae
In QtCairo, also save figures using cairo.
anntzer Aug 3, 2017
ab61783
Fix doc builds.
anntzer Aug 26, 2017
8946c38
Fix hidpi in qt5cairo.
anntzer Dec 29, 2017
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Make sure only one cairo binding is ever used; fix docs.
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@anntzer
anntzer committed Jan 9, 2018
commit 138ba5850d184a0cd080bb6c8bc2cf1a2f9d0516
38 changes: 21 additions & 17 deletions lib/matplotlib/backends/backend_cairo.py
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Original file line number Diff line number Diff line change
Expand Up @@ -18,26 +18,30 @@

import numpy as np

try:
import cairocffi as cairo
except ImportError:
# In order to make it possible to pick the binding, use whichever has already
# been imported, if any. (The intermediate call to iter is just to placate
# Python2.)
cairo = next(
(mod for mod in (
sys.modules.get(name) for name in ["cairocffi", "cairo"]) if mod),
None)
if cairo is None:
try:
import cairo
import cairocffi as cairo
except ImportError:
raise ImportError("Cairo backend requires that cairocffi or pycairo "
"is installed.")
else:
HAS_CAIRO_CFFI = False
else:
HAS_CAIRO_CFFI = True

_version_required = (1, 2, 0)
if cairo.version_info < _version_required:
raise ImportError("Pycairo %d.%d.%d is installed\n"
"Pycairo %d.%d.%d or later is required"
% (cairo.version_info + _version_required))
try:
import cairo
except ImportError:
raise ImportError(
"The cairo backend requires cairocffi or pycairo")
# cairocffi can install itself as cairo (`install_as_pycairo`) -- don't get
# fooled!
HAS_CAIRO_CFFI = cairo.__name__ == "cairocffi"

if cairo.version_info < (1, 2, 0):
raise ImportError("cairo {} is installed; "
"cairo>=1.2.0 is required".format(cairo.version))
backend_version = cairo.version
del _version_required

from matplotlib.backend_bases import (
_Backend, FigureCanvasBase, FigureManagerBase, GraphicsContextBase,
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10 changes: 5 additions & 5 deletions tutorials/introductory/usage.py
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Expand Up @@ -432,23 +432,23 @@ def my_plotter(ax, data1, data2, param_dict):
# ``%matplotlib notebook``.
# WebAgg On ``show()`` will start a tornado server with an interactive
# figure.
# Qt5Cairo Cairo rendering in a :term:`Qt5` canvas (requires PyQt5_ and
# cairocffi_).
# Qt5Cairo Cairo rendering in a :term:`Qt5` canvas (requires PyQt5_, and
# pycairo_ or cairocffi_).
# GTK3Cairo Cairo rendering to a :term:`GTK` 3.x canvas (requires PyGObject_,
# and pycairo_ or cairocffi_).
# Qt4Agg Agg rendering to a :term:`Qt4` canvas (requires PyQt4_ or
# ``pyside``). This backend can be activated in IPython with
# ``%matplotlib qt4``.
# Qt4Cairo Cairo rendering in a :term:`Qt5` canvas (requires PyQt5_ and
# cairocffi_).
# Qt4Cairo Cairo rendering in a :term:`Qt4` canvas (requires PyQt4_, and
# pycairo_ or cairocffi_).
# GTKAgg Agg rendering to a :term:`GTK` 2.x canvas (requires PyGTK_, and
# pycairo_ or cairocffi_; Python2 only). This backend can be
# activated in IPython with ``%matplotlib gtk``.
# GTKCairo Cairo rendering to a :term:`GTK` 2.x canvas (requires PyGTK_,
# and pycairo_ or cairocffi_; Python2 only).
# WXAgg Agg rendering to a :term:`wxWidgets` canvas (requires wxPython_;
# v4.0 (in beta) is required for Python3). This backend can be
# activated in IPython with ``%matplotlib wx``.
# activated in IPython with ``%matplotlib wx``.#
# ========= ================================================================
#
# .. _`Anti-Grain Geometry`: http://antigrain.com/
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