def loadFromFile(cls, fileName):
'''
Load chamber and trajectory from file
'''
def stripeq(string):
'''
strip `=` if presented (new chamber format)
'''
pos = string.find('=')
if pos >= 0 : # New file format
return string[pos + 1:]
else :
return string
trajectoryFile = open(unicode(fileName), 'r')
if trajectoryFile.readline().strip() != cls.fileCaption.strip() :
#TODO: exception
print('This is not Trajectory')
return None
# Chamber position and size
x, y = [int(value) for value in stripeq(trajectoryFile.readline()).split()]
width, height = [int(value) for value in stripeq(trajectoryFile.readline()).split()]
# Creating chamber
chamber = cls(QtCore.QRect(x, y, width, height))
# TODO: Reading scale label and frame rate
scale = float(stripeq(trajectoryFile.readline()))
frameRate = float(stripeq(trajectoryFile.readline()))
chamber.sampleName = stripeq(unicode(trajectoryFile.readline())).strip()
chamber.threshold = float(stripeq(trajectoryFile.readline()))
if trajectoryFile.readline().strip() == cls.trajectoryCaption.strip() :
chamber.trajectory = LtTrajectory.loadFromFile(trajectoryFile)
else :
print("Error loading trajectory")
raise
trajectoryFile.close()
#Loading trajectory Image
if QtCore.QFileInfo(fileName+'.png').exists() :
chamber.trajectoryImage = QtGui.QImage(fileName+'.png')
return chamber, scale, frameRate
