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SF.net SVN: matplotlib:[7295] branches/mathtex/lib/matplotlib/backends
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From: <evi...@us...> - 2009-07-26 17:54:02
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Revision: 7295
http://matplotlib.svn.sourceforge.net/matplotlib/?rev=7295&view=rev
Author: evilguru
Date: 2009-07-26 17:53:54 +0000 (Sun, 26 Jul 2009)
Log Message:
-----------
Make mathtex an optional dependency. Warn when trying to render math when it is not available.
Modified Paths:
--------------
branches/mathtex/lib/matplotlib/backends/backend_agg.py
branches/mathtex/lib/matplotlib/backends/backend_cairo.py
branches/mathtex/lib/matplotlib/backends/backend_gdk.py
branches/mathtex/lib/matplotlib/backends/backend_macosx.py
branches/mathtex/lib/matplotlib/backends/backend_pdf.py
branches/mathtex/lib/matplotlib/backends/backend_ps.py
branches/mathtex/lib/matplotlib/backends/backend_svg.py
Modified: branches/mathtex/lib/matplotlib/backends/backend_agg.py
===================================================================
--- branches/mathtex/lib/matplotlib/backends/backend_agg.py 2009-07-26 00:06:34 UTC (rev 7294)
+++ branches/mathtex/lib/matplotlib/backends/backend_agg.py 2009-07-26 17:53:54 UTC (rev 7295)
@@ -21,6 +21,7 @@
* integrate screen dpi w/ ppi and text
"""
from __future__ import division
+import warnings
import numpy as npy
@@ -37,8 +38,12 @@
from _backend_agg import RendererAgg as _RendererAgg
from matplotlib import _png
-from mathtex.mathtex_main import Mathtex
-from mathtex.backends.backend_image import MathtexBackendImage
+try:
+ from mathtex.mathtex_main import Mathtex
+ from mathtex.backends.backend_image import MathtexBackendImage
+ HAVE_MATHTEX = True
+except ImportError:
+ HAVE_MATHTEX = False
backend_version = 'v2.2'
@@ -104,12 +109,13 @@
"""
if __debug__: verbose.report('RendererAgg.draw_mathtext',
'debug-annoying')
- m = Mathtex(s, rcParams['mathtext.fontset'], prop.get_size_in_points(), self.dpi)
- b = MathtexBackendImage()
+ if HAVE_MATHTEX:
+ m = Mathtex(s, rcParams['mathtext.fontset'], prop.get_size_in_points(), self.dpi)
+ b = MathtexBackendImage()
- m.render_to_backend(b)
+ m.render_to_backend(b)
- self._renderer.draw_text_image(b.image, int(x), int(y) + 1, angle, gc)
+ self._renderer.draw_text_image(b.image, int(x), int(y) + 1, angle, gc)
def draw_text(self, gc, x, y, s, prop, angle, ismath):
"""
@@ -153,8 +159,13 @@
return w, h, d
if ismath:
- m = Mathtex(s, rcParams['mathtext.fontset'], prop.get_size_in_points(), self.dpi)
- return m.width, m.height, m.depth
+ if not HAVE_MATHTEX:
+ warnings.warn('matplotlib was compiled without mathtex support. ' +
+ 'Math will not be rendered.')
+ return 0.0, 0.0, 0.0
+ else:
+ m = Mathtex(s, rcParams['mathtext.fontset'], prop.get_size_in_points(), self.dpi)
+ return m.width, m.height, m.depth
font = self._get_agg_font(prop)
font.set_text(s, 0.0, flags=LOAD_FORCE_AUTOHINT) # the width and height of unrotated string
w, h = font.get_width_height()
@@ -250,7 +261,7 @@
>>> x1, y1, x2, y2 = region.get_extents()
>>> renderer.restore_region(region, bbox=(x1+dx, y1, x2, y2),
xy=(x1-dx, y1))
-
+
"""
if bbox is not None or xy is not None:
if bbox is None:
Modified: branches/mathtex/lib/matplotlib/backends/backend_cairo.py
===================================================================
--- branches/mathtex/lib/matplotlib/backends/backend_cairo.py 2009-07-26 00:06:34 UTC (rev 7294)
+++ branches/mathtex/lib/matplotlib/backends/backend_cairo.py 2009-07-26 17:53:54 UTC (rev 7295)
@@ -47,8 +47,12 @@
from matplotlib.font_manager import ttfFontProperty
from matplotlib import rcParams
-from mathtex.mathtex_main import Mathtex
-from mathtex.backends.backend_cairo import MathtexBackendCairo
+try:
+ from mathtex.mathtex_main import Mathtex
+ from mathtex.backends.backend_cairo import MathtexBackendCairo
+ HAVE_MATHTEX = True
+except ImportError:
+ HAVE_MATHTEX = False
_debug = False
#_debug = True
@@ -202,6 +206,7 @@
def _draw_mathtext(self, gc, x, y, s, prop, angle):
if _debug: print '%s.%s()' % (self.__class__.__name__, _fn_name())
+ if not HAVE_MATHTEX: return
ctx = gc.ctx
@@ -234,8 +239,13 @@
def get_text_width_height_descent(self, s, prop, ismath):
if _debug: print '%s.%s()' % (self.__class__.__name__, _fn_name())
if ismath:
- m = Mathtex(s, rcParams['mathtext.fontset'], prop.get_size_in_points(), self.dpi)
- return m.width, m.height, m.depth
+ if HAVE_MATHTEX:
+ m = Mathtex(s, rcParams['mathtext.fontset'], prop.get_size_in_points(), self.dpi)
+ return m.width, m.height, m.depth
+ else:
+ warnings.warn('matplotlib was compiled without mathtex support. ' +
+ 'Math will not be rendered.')
+ return 0.0, 0.0, 0.0
ctx = self.text_ctx
ctx.save()
Modified: branches/mathtex/lib/matplotlib/backends/backend_gdk.py
===================================================================
--- branches/mathtex/lib/matplotlib/backends/backend_gdk.py 2009-07-26 00:06:34 UTC (rev 7294)
+++ branches/mathtex/lib/matplotlib/backends/backend_gdk.py 2009-07-26 17:53:54 UTC (rev 7295)
@@ -27,8 +27,12 @@
from matplotlib.transforms import Affine2D
from matplotlib.backends._backend_gdk import pixbuf_get_pixels_array
-from mathtex.mathtex_main import Mathtex
-from mathtex.backends.backend_image import MathtexBackendImage
+try:
+ from mathtex.mathtex_main import Mathtex
+ from mathtex.backends.backend_image import MathtexBackendImage
+ HAVE_MATHTEX = True
+except ImportError:
+ HAVE_MATHTEX = False
backend_version = "%d.%d.%d" % gtk.pygtk_version
_debug = False
@@ -159,6 +163,9 @@
def _draw_mathtext(self, gc, x, y, s, prop, angle):
+ if not HAVE_MATHTEX:
+ return
+
m = Mathtex(s, matplotlib.rcParams['mathtext.fontset'],
prop.get_size_in_points(), self.dpi)
b = MathtexBackendImage()
@@ -305,9 +312,14 @@
def get_text_width_height_descent(self, s, prop, ismath):
if ismath:
- m = Mathtex(s, matplotlib.rcParams['mathtext.fontset'],
- prop.get_size_in_points(), self.dpi)
- return m.width, m.height, m.depth
+ if not HAVE_MATHTEX:
+ warnings.warn('matplotlib was compiled without mathtex support. ' +
+ 'Math will not be rendered.')
+ return 0.0, 0.0, 0.0
+ else:
+ m = Mathtex(s, matplotlib.rcParams['mathtext.fontset'],
+ prop.get_size_in_points(), self.dpi)
+ return m.width, m.height, m.depth
layout, inkRect, logicalRect = self._get_pango_layout(s, prop)
l, b, w, h = inkRect
Modified: branches/mathtex/lib/matplotlib/backends/backend_macosx.py
===================================================================
--- branches/mathtex/lib/matplotlib/backends/backend_macosx.py 2009-07-26 00:06:34 UTC (rev 7294)
+++ branches/mathtex/lib/matplotlib/backends/backend_macosx.py 2009-07-26 17:53:54 UTC (rev 7295)
@@ -11,8 +11,12 @@
from matplotlib.path import Path
from matplotlib.colors import colorConverter
-from mathtex.mathtex_main import Mathtex
-from mathtex.backends.backend_image import MathtexBackendImage
+try:
+ from mathtex.mathtex_main import Mathtex
+ from mathtex.backends.backend_image import MathtexBackendImage
+ HAVE_MATHTEX = True
+except ImportError:
+ HAVE_MATHTEX = False
from matplotlib.widgets import SubplotTool
@@ -90,6 +94,9 @@
gc.draw_mathtext(x, y, angle, Z)
def _draw_mathtext(self, gc, x, y, s, prop, angle):
+ if not HAVE_MATHTEX:
+ return
+
m = Mathtex(s, rcParams['mathtext.fontset'], prop.get_size_in_points(), self.dpi)
b = MathtexBackendImage()
m.render_to_backend(b)
@@ -116,9 +123,14 @@
renderer=self)
return w, h, d
if ismath:
- m = Mathtex(s, rcParams['mathtext.fontset'],
- prop.get_size_in_points(), self.dpi)
- return m.width, m.height, m.depth
+ if HAVE_MATHTEX:
+ m = Mathtex(s, rcParams['mathtext.fontset'],
+ prop.get_size_in_points(), self.dpi)
+ return m.width, m.height, m.depth
+ else:
+ warnings.warn('matplotlib was compiled without mathtex support. ' +
+ 'Math will not be rendered.')
+ return 0.0, 0.0, 0.0
family = prop.get_family()
weight = prop.get_weight()
style = prop.get_style()
Modified: branches/mathtex/lib/matplotlib/backends/backend_pdf.py
===================================================================
--- branches/mathtex/lib/matplotlib/backends/backend_pdf.py 2009-07-26 00:06:34 UTC (rev 7294)
+++ branches/mathtex/lib/matplotlib/backends/backend_pdf.py 2009-07-26 17:53:54 UTC (rev 7295)
@@ -1,7 +1,7 @@
# -*- coding: iso-8859-1 -*-
"""
A PDF matplotlib backend (not yet complete)
-Author: Jouni K Sepp\xE4nen <jk...@ik...>
+Author: Jouni K Sepp�nen <jk...@ik...>
"""
from __future__ import division
@@ -42,7 +42,11 @@
from matplotlib.path import Path
from matplotlib import ttconv
-from mathtex.mathtex_main import Mathtex
+try:
+ from mathtex.mathtex_main import Mathtex
+ HAVE_MATHTEX = True
+except ImportError:
+ HAVE_MATHTEX = False
# Overview
#
@@ -1344,6 +1348,9 @@
def draw_mathtext(self, gc, x, y, s, prop, angle):
# TODO: fix positioning and encoding
+ if not HAVE_MATHTEX:
+ return
+
m = Mathtex(s, rcParams['mathtext.fontset'], prop.get_size_in_points(), 72.0)
# Generate the dict of used characters
@@ -1654,9 +1661,15 @@
return w, h, d
if ismath:
- m = Mathtex(s, rcParams['mathtext.fontset'],
- prop.get_size_in_points(), 72.0)
- w, h, d = m.width, m.height, m.depth
+ # Ensure mathtex is available
+ if not HAVE_MATHTEX:
+ warnings.warn('matplotlib was compiled without mathtex support. ' +
+ 'Math will not be rendered.')
+ w, h, d = 0.0, 0.0, 0.0
+ else:
+ m = Mathtex(s, rcParams['mathtext.fontset'],
+ prop.get_size_in_points(), 72.0)
+ w, h, d = m.width, m.height, m.depth
elif rcParams['pdf.use14corefonts']:
font = self._get_font_afm(prop)
Modified: branches/mathtex/lib/matplotlib/backends/backend_ps.py
===================================================================
--- branches/mathtex/lib/matplotlib/backends/backend_ps.py 2009-07-26 00:06:34 UTC (rev 7294)
+++ branches/mathtex/lib/matplotlib/backends/backend_ps.py 2009-07-26 17:53:54 UTC (rev 7295)
@@ -3,7 +3,7 @@
"""
from __future__ import division
-import glob, math, os, shutil, sys, time
+import glob, math, os, shutil, sys, time, warnings
def _fn_name(): return sys._getframe(1).f_code.co_name
try:
@@ -34,7 +34,11 @@
from matplotlib.backends.backend_mixed import MixedModeRenderer
-from mathtex.mathtex_main import Mathtex
+try:
+ from mathtex.mathtex_main import Mathtex
+ HAVE_MATHTEX = True
+except ImportError:
+ HAVE_MATHTEX = False
import numpy as npy
import binascii
@@ -277,8 +281,13 @@
return w, h, d
if ismath:
- m = Mathtex(s, rcParams['mathtext.fontset'], prop.get_size_in_points(), 72.0)
- return m.width, m.height, m.depth
+ if HAVE_MATHTEX:
+ m = Mathtex(s, rcParams['mathtext.fontset'], prop.get_size_in_points(), 72.0)
+ return m.width, m.height, m.depth
+ else:
+ warnings.warn('matplotlib was compiled without mathtex support. ' +
+ 'Math will not be rendered.')
+ return 0.0, 0.0, 0.0
if rcParams['ps.useafm']:
if ismath: s = s[1:-1]
@@ -738,6 +747,8 @@
"""
if debugPS:
self._pswriter.write("% mathtext\n")
+ if not HAVE_MATHTEX:
+ return
m = Mathtex(s, rcParams['mathtext.fontset'], prop.get_size_in_points(), 72.0)
Modified: branches/mathtex/lib/matplotlib/backends/backend_svg.py
===================================================================
--- branches/mathtex/lib/matplotlib/backends/backend_svg.py 2009-07-26 00:06:34 UTC (rev 7294)
+++ branches/mathtex/lib/matplotlib/backends/backend_svg.py 2009-07-26 17:53:54 UTC (rev 7295)
@@ -1,6 +1,6 @@
from __future__ import division
-import os, codecs, base64, tempfile, urllib, gzip, cStringIO
+import os, codecs, base64, tempfile, urllib, gzip, cStringIO, warnings
try:
from hashlib import md5
@@ -20,7 +20,11 @@
from matplotlib.transforms import Affine2D
from matplotlib import _png
-from mathtex.mathtex_main import Mathtex
+try:
+ from mathtex.mathtex_main import Mathtex
+ HAVE_MATHTEX = True
+except ImportError:
+ HAVE_MATHTEX = False
from xml.sax.saxutils import escape as escape_xml_text
@@ -487,6 +491,9 @@
"""
Draw math text using mathtex
"""
+ if not HAVE_MATHTEX:
+ return
+
m = Mathtex(s, rcParams['mathtext.fontset'], prop.get_size_in_points(), 72.0)
# Extract the glyphs and rects to render
@@ -592,9 +599,14 @@
def get_text_width_height_descent(self, s, prop, ismath):
if ismath:
- m = Mathtex(s, rcParams['mathtext.fontset'],
- prop.get_size_in_points(), 72.0)
- return m.width, m.height, m.depth
+ if HAVE_MATHTEX:
+ m = Mathtex(s, rcParams['mathtext.fontset'],
+ prop.get_size_in_points(), 72.0)
+ return m.width, m.height, m.depth
+ else:
+ warnings.warn('matplotlib was compiled without mathtex support. ' +
+ 'Math will not be rendered.')
+ return 0.0, 0.0, 0.0
font = self._get_font(prop)
font.set_text(s, 0.0, flags=LOAD_NO_HINTING)
w, h = font.get_width_height()
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