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Do not run Windows' file system convert tool #5460

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Do not run Windows' file system convert tool
cgohlke Nov 10, 2015
a30ec66
On Windows, initialize the animation.convert_path setting from the Re…
cgohlke Nov 25, 2015
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25 changes: 24 additions & 1 deletion lib/matplotlib/animation.py
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Original file line number Diff line number Diff line change
Expand Up @@ -33,7 +33,7 @@
from matplotlib.cbook import iterable, is_string_like
from matplotlib.compat import subprocess
from matplotlib import verbose
from matplotlib import rcParams
from matplotlib import rcParams, rcParamsDefault

# Process creation flag for subprocess to prevent it raising a terminal
# window. See for example:
Expand Down Expand Up @@ -262,6 +262,8 @@ def isAvailable(cls):
Check to see if a MovieWriter subclass is actually available by
running the commandline tool.
'''
if not cls.bin_path():
return False
try:
p = subprocess.Popen(cls.bin_path(),
shell=False,
Expand Down Expand Up @@ -545,6 +547,27 @@ def delay(self):
def output_args(self):
return [self.outfile]

@classmethod
def _init_from_registry(cls):
if sys.platform != 'win32' or rcParams[cls.exec_key] != 'convert':
return
from matplotlib.externals.six.moves import winreg
for flag in (0, winreg.KEY_WOW64_32KEY, winreg.KEY_WOW64_64KEY):
try:
hkey = winreg.OpenKeyEx(winreg.HKEY_LOCAL_MACHINE,
'Software\\Imagemagick\\Current',
0, winreg.KEY_QUERY_VALUE | flag)
binpath = winreg.QueryValueEx(hkey, 'BinPath')[0]
winreg.CloseKey(hkey)
binpath += '\\convert.exe'
break
except Exception:
binpath = ''
rcParams[cls.exec_key] = rcParamsDefault[cls.exec_key] = binpath


ImageMagickBase._init_from_registry()


@writers.register('imagemagick')
class ImageMagickWriter(MovieWriter, ImageMagickBase):
Expand Down