def transform(self, pixmap, orientation):
orientation = (orientation or 1) - 1
if not orientation:
return pixmap
# need to rotate and or reflect image
transform = QtGui.QTransform()
if orientation & 0b001:
# reflect left-right
transform = transform.scale(-1.0, 1.0)
if orientation & 0b010:
transform = transform.rotate(180.0)
if orientation & 0b100:
# transpose horizontal & vertical
transform = QtGui.QTransform(0, 1, 1, 0, 1, 1) * transform
return pixmap.transformed(transform)
def load_thumbnail(self):
if self.pixmap.isNull():
self.image.setText(self.tr('Can not\nload\nimage'))
else:
pixmap = self.pixmap
orientation = self.metadata.orientation
if orientation and orientation.value > 1:
# need to rotate and or reflect image
transform = QtGui.QTransform()
if orientation.value in (3, 4):
transform = transform.rotate(180.0)
elif orientation.value in (5, 6):
transform = transform.rotate(90.0)
elif orientation.value in (7, 8):
transform = transform.rotate(-90.0)
if orientation.value in (2, 4, 5, 7):
transform = transform.scale(-1.0, 1.0)
pixmap = pixmap.transformed(transform)
self.image.setPixmap(pixmap.scaled(
self.thumb_size, self.thumb_size,
Qt.KeepAspectRatio, Qt.SmoothTransformation))
def __init__(self, path, image_list, thumb_size=80, *arg, **kw):
super(Image, self).__init__(*arg, **kw)
self.path = path
self.image_list = image_list
self.name, ext = os.path.splitext(os.path.basename(self.path))
self.selected = False
self.thumb_size = thumb_size
# read image
with open(self.path, 'rb') as pf:
image_data = pf.read()
# read metadata
self.metadata = Metadata(
self.path, image_data, new_status=self.show_status)
# set file type
ext = ext.lower()
self.file_type = imghdr.what(self.path) or 'raw'
if self.file_type == 'tiff' and ext not in ('.tif', '.tiff'):
self.file_type = 'raw'
# make 'master' thumbnail
self.pixmap = QtGui.QPixmap()
self.pixmap.loadFromData(image_data)
unrotate = self.file_type == 'raw'
if self.pixmap.isNull():
# image read failed so attempt to use exif thumbnail
thumb = self.metadata.get_exif_thumbnail()
if thumb:
self.pixmap.loadFromData(bytearray(thumb))
unrotate = False
if not self.pixmap.isNull():
if max(self.pixmap.width(), self.pixmap.height()) > 450:
# store a scaled down version of image to save memory
self.pixmap = self.pixmap.scaled(
300, 300, Qt.KeepAspectRatio, Qt.SmoothTransformation)
if unrotate:
# loading preview which is already re-oriented
orientation = self.metadata.orientation
if orientation and orientation.value > 1:
# need to unrotate and or unreflect image
transform = QtGui.QTransform()
if orientation.value in (3, 4):
transform = transform.rotate(180.0)
elif orientation.value in (5, 6):
transform = transform.rotate(-90.0)
elif orientation.value in (7, 8):
transform = transform.rotate(90.0)
if orientation.value in (2, 4, 5, 7):
transform = transform.scale(-1.0, 1.0)
self.pixmap = self.pixmap.transformed(transform)
# sub widgets
layout = QtWidgets.QGridLayout()
layout.setSpacing(0)
layout.setContentsMargins(3, 3, 3, 3)
self.setLayout(layout)
self.setToolTip(self.path)
# label to display image
self.image = QtWidgets.QLabel()
self.image.setAlignment(Qt.AlignHCenter | Qt.AlignVCenter)
layout.addWidget(self.image, 0, 0, 1, 2)
# label to display file name
self.label = QtWidgets.QLabel()
self.label.setAlignment(Qt.AlignRight)
self.label.setStyleSheet("QLabel { font-size: 12px }")
layout.addWidget(self.label, 1, 1)
# label to display status
self.status = QtWidgets.QLabel()
self.status.setAlignment(Qt.AlignLeft)
self.status.setStyleSheet("QLabel { font-size: 12px }")
self.status.setFont(QtGui.QFont("Dejavu Sans"))
if not self.status.fontInfo().exactMatch():
# probably on Windows, try a different font
self.status.setFont(QtGui.QFont("Segoe UI Symbol"))
layout.addWidget(self.status, 1, 0)
self.setFrameStyle(QtWidgets.QFrame.Panel | QtWidgets.QFrame.Plain)
self.setObjectName("thumbnail")
self.set_selected(False)
self.show_status(False)
self._set_thumb_size(self.thumb_size)