def loadFile(self, filename=None):
"""Load the specified file, or the last opened file if None."""
self.resetState()
self.canvas.setEnabled(False)
if filename is None:
filename = self.settings.get('filename', '')
filename = str(filename)
if QFile.exists(filename):
if LabelFile.isLabelFile(filename):
try:
self.labelFile = LabelFile(filename)
# FIXME: PyQt4 installed via Anaconda fails to load JPEG
# and JSON encoded images.
# https://github.com/ContinuumIO/anaconda-issues/issues/131
if QImage.fromData(self.labelFile.imageData).isNull():
raise LabelFileError(
'Failed loading image data from label file.\n'
'Maybe this is a known issue of PyQt4 built on'
' Anaconda, and may be fixed by installing PyQt5.')
except LabelFileError as e:
self.errorMessage('Error opening file',
("<p><b>%s</b></p>"
"<p>Make sure <i>%s</i> is a valid label file.")\
% (e, filename))
self.status("Error reading %s" % filename)
return False
self.imageData = self.labelFile.imageData
self.lineColor = QColor(*self.labelFile.lineColor)
self.fillColor = QColor(*self.labelFile.fillColor)
else:
# Load image:
# read data first and store for saving into label file.
self.imageData = read(filename, None)
self.labelFile = None
image = QImage.fromData(self.imageData)
if image.isNull():
formats = ['*.{}'.format(fmt.data().decode())
for fmt in QImageReader.supportedImageFormats()]
self.errorMessage(
'Error opening file',
'<p>Make sure <i>{0}</i> is a valid image file.<br/>'
'Supported image formats: {1}</p>'
.format(filename, ','.join(formats)))
self.status("Error reading %s" % filename)
return False
self.status("Loaded %s" % os.path.basename(str(filename)))
self.image = image
self.filename = filename
self.canvas.loadPixmap(QPixmap.fromImage(image))
if self.labelFile:
self.loadLabels(self.labelFile.shapes)
self.setClean()
self.canvas.setEnabled(True)
self.adjustScale(initial=True)
self.paintCanvas()
self.addRecentFile(self.filename)
self.toggleActions(True)
return True
return False
def loadFile(self, filename=None):
"""Load the specified file, or the last opened file if None."""
# changing fileListWidget loads file
if (filename in self.imageList and self.fileListWidget.currentRow() !=
self.imageList.index(filename)):
self.fileListWidget.setCurrentRow(self.imageList.index(filename))
return
self.resetState()
self.canvas.setEnabled(False)
if filename is None:
filename = self.settings.value('filename', '')
filename = str(filename)
if not QtCore.QFile.exists(filename):
self.errorMessage('Error opening file',
'No such file: <b>%s</b>' % filename)
return False
# assumes same name, but json extension
self.status("Loading %s..." % os.path.basename(str(filename)))
label_file = os.path.splitext(filename)[0] + '.json'
if QtCore.QFile.exists(label_file) and \
LabelFile.isLabelFile(label_file):
try:
self.labelFile = LabelFile(label_file)
# FIXME: PyQt4 installed via Anaconda fails to load JPEG
# and JSON encoded images.
# https://github.com/ContinuumIO/anaconda-issues/issues/131
if QtGui.QImage.fromData(self.labelFile.imageData).isNull():
raise LabelFileError(
'Failed loading image data from label file.\n'
'Maybe this is a known issue of PyQt4 built on'
' Anaconda, and may be fixed by installing PyQt5.')
except LabelFileError as e:
self.errorMessage(
'Error opening file', "<p><b>%s</b></p>"
"<p>Make sure <i>%s</i> is a valid label file." %
(e, label_file))
self.status("Error reading %s" % label_file)
return False
self.imageData = self.labelFile.imageData
self.imagePath = os.path.join(os.path.dirname(label_file),
self.labelFile.imagePath)
self.lineColor = QtGui.QColor(*self.labelFile.lineColor)
self.fillColor = QtGui.QColor(*self.labelFile.fillColor)
self.otherData = self.labelFile.otherData
else:
# Load image:
# read data first and store for saving into label file.
self.imageData = read(filename, None)
if self.imageData is not None:
# the filename is image not JSON
self.imagePath = filename
self.labelFile = None
image = QtGui.QImage.fromData(self.imageData)
if image.isNull():
formats = [
'*.{}'.format(fmt.data().decode())
for fmt in QtGui.QImageReader.supportedImageFormats()
]
self.errorMessage(
'Error opening file',
'<p>Make sure <i>{0}</i> is a valid image file.<br/>'
'Supported image formats: {1}</p>'.format(
filename, ','.join(formats)))
self.status("Error reading %s" % filename)
return False
self.image = image
self.filename = filename
self.canvas.loadPixmap(QtGui.QPixmap.fromImage(image))
if self.labelFile:
self.loadLabels(self.labelFile.shapes)
self.setClean()
self.canvas.setEnabled(True)
self.adjustScale(initial=True)
self.paintCanvas()
self.addRecentFile(self.filename)
self.toggleActions(True)
self.status("Loaded %s" % os.path.basename(str(filename)))
return True