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StringToPng.py
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StringToPng.py
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# Mantid Repository : https://github.com/mantidproject/mantid
#
# Copyright © 2018 ISIS Rutherford Appleton Laboratory UKRI,
# NScD Oak Ridge National Laboratory, European Spallation Source,
# Institut Laue - Langevin & CSNS, Institute of High Energy Physics, CAS
# SPDX - License - Identifier: GPL - 3.0 +
#pylint: disable=no-init,invalid-name
import mantid
class StringToPng(mantid.api.PythonAlgorithm):
def category(self):
""" Category
"""
return "DataHandling\\Plots"
def seeAlso(self):
return [ "SavePlot1D" ]
def name(self):
""" Algorithm name
"""
return "StringToPng"
def summary(self):
return "Creates an image file containing a string."
def checkGroups(self):
return False
def PyInit(self):
#declare properties
self.declareProperty("String","", mantid.kernel.StringMandatoryValidator(),"String to plot")
self.declareProperty(mantid.api.FileProperty('OutputFilename', '', action=mantid.api.FileAction.Save, extensions = ["png"]),
doc='Name of the image file to savefile.')
def PyExec(self):
ok2run=''
try:
import matplotlib
except ImportError:
ok2run='Problem importing matplotlib'
from distutils.version import LooseVersion
if LooseVersion(matplotlib.__version__)<LooseVersion("1.2.0"):
ok2run='Wrong version of matplotlib. Required >= 1.2.0'
if ok2run!='':
raise RuntimeError(ok2run)
if 'backend_mtdqt4agg' not in matplotlib.get_backend():
matplotlib.use("agg")
import matplotlib.pyplot as plt
fig=plt.figure(figsize=(.1,.1))
ax1=plt.axes(frameon=False)
ax1.text(0.,1,bytearray(self.getProperty("String").valueAsStr, 'utf-8').decode('unicode_escape'),va="center",fontsize=16)
ax1.axes.get_xaxis().set_visible(False)
ax1.axes.get_yaxis().set_visible(False)
filename = self.getProperty("OutputFilename").value
fig.savefig(filename,bbox_inches='tight')
plt.close(fig)
mantid.api.AlgorithmFactory.subscribe(StringToPng)