class ImageEditor(FileEditor):
"""Editor to view and edit image files, this is a customized
implementation of a FileEditor"""
filter = """Image files (*.bmp *.jpg *.jpeg *.mng *.png *.pbm *.pgm *.ppm
*.tiff *.xbm *.xpm) All files (*)"""
def __init__(self,
parent=None,
storage=None,
preview_width=100,
preview_height=100,
field_name='image',
**kwargs):
self.preview_width = preview_width
self.preview_height = preview_height
FileEditor.__init__(self, parent=parent, storage=storage, **kwargs)
self.setObjectName(field_name)
def setup_widget(self):
layout = QtGui.QVBoxLayout()
layout.setSpacing(0)
label_button_layout = QtGui.QHBoxLayout()
#
# Setup label
#
self.label = QtGui.QLabel(self)
self.label.installEventFilter(self)
self.label.setAlignment(Qt.AlignHCenter | Qt.AlignVCenter)
label_button_layout.addWidget(self.label)
self.filename = DecoratedLineEdit(self)
self.filename.setVisible(False)
#
# Setup buttons
#
button_layout = QtGui.QVBoxLayout()
button_layout.setSpacing(0)
button_layout.setContentsMargins(0, 0, 0, 0)
self.save_as_button = QtGui.QToolButton()
self.save_as_button.setFocusPolicy(Qt.ClickFocus)
self.save_as_button.setIcon(self.save_as_icon.getQIcon())
self.save_as_button.setToolTip(_('Save file as'))
self.save_as_button.setAutoRaise(True)
self.save_as_button.clicked.connect(self.save_as_button_clicked)
self.open_button = QtGui.QToolButton()
self.open_button.setIcon(self.open_icon.getQIcon())
self.open_button.setAutoRaise(True)
self.open_button.setToolTip(unicode(_('open image')))
self.open_button.clicked.connect(self.open_button_clicked)
self.add_button = QtGui.QToolButton()
self.add_button.setFocusPolicy(Qt.StrongFocus)
self.add_button.setIcon(self.add_icon.getQIcon())
self.add_button.setToolTip(_('Attach file'))
self.add_button.clicked.connect(self.add_button_clicked)
self.add_button.setAutoRaise(True)
self.clear_button = QtGui.QToolButton()
self.clear_button.setIcon(self.clear_icon.getQIcon())
self.clear_button.setToolTip(unicode(_('delete image')))
self.clear_button.setAutoRaise(True)
self.clear_button.clicked.connect(self.clear_button_clicked)
self.clear_button.setFocusPolicy(Qt.ClickFocus)
copy_button = QtGui.QToolButton()
copy_button.setDefaultAction(
ActionFactory.copy(self, self.copy_to_clipboard))
copy_button.setAutoRaise(True)
copy_button.setFocusPolicy(Qt.ClickFocus)
paste_button = QtGui.QToolButton()
paste_button.setDefaultAction(
ActionFactory.paste(self, self.paste_from_clipboard))
paste_button.setAutoRaise(True)
paste_button.setObjectName('paste')
paste_button.setFocusPolicy(Qt.ClickFocus)
#button_layout.addStretch()
button_layout.addWidget(self.open_button)
button_layout.addWidget(self.save_as_button)
button_layout.addWidget(self.add_button)
button_layout.addWidget(self.clear_button)
button_layout.addWidget(copy_button)
button_layout.addWidget(paste_button)
label_button_layout.addLayout(button_layout)
label_button_layout.addStretch()
layout.addLayout(label_button_layout)
#layout.addStretch()
self.setLayout(layout)
self.clear_image()
QtGui.QApplication.clipboard().dataChanged.connect(
self.clipboard_data_changed)
self.clipboard_data_changed()
@QtCore.pyqtSlot()
def clipboard_data_changed(self):
paste_button = self.findChild(QtGui.QWidget, 'paste')
if paste_button:
mime_data = QtGui.QApplication.clipboard().mimeData()
paste_button.setVisible(mime_data.hasImage())
@QtCore.pyqtSlot()
def paste_from_clipboard(self):
"""Paste an image from the clipboard into the editor"""
mime_data = QtGui.QApplication.clipboard().mimeData()
if mime_data.hasImage():
byte_array = QtCore.QByteArray()
buffer = QtCore.QBuffer(byte_array)
image = QtGui.QImage(mime_data.imageData())
image.save(buffer, 'PNG')
def create_checkin(byte_array):
return lambda: self.checkin_byte_array(byte_array, '.png')
post(create_checkin(byte_array), self.stored_file_ready)
def checkin_byte_array(self, byte_array, suffix):
"""Check a byte_array into the storage"""
import cStringIO
stream = cStringIO.StringIO(byte_array.data())
return self.storage.checkin_stream('clipboard', suffix, stream)
def set_enabled(self, editable=True):
self.clear_button.setEnabled(editable)
self.open_button.setEnabled(editable)
self.add_button.setEnabled(editable)
self.label.setEnabled(editable)
def set_pixmap(self, pixmap):
self.label.setPixmap(pixmap)
self.draw_border()
def set_image(self, image):
self.set_pixmap(QtGui.QPixmap.fromImage(image))
@QtCore.pyqtSlot()
def copy_to_clipboard(self):
"""Copy the image to the clipboard"""
if self.value:
post(self.value.checkout_image, self.set_image_to_clipboard)
def set_image_to_clipboard(self, image):
clipboard = QtGui.QApplication.clipboard()
clipboard.setImage(image)
def clear_image(self):
dummy_image = Icon('tango/32x32/mimetypes/image-x-generic.png')
self.set_pixmap(dummy_image.getQPixmap())
def set_value(self, value):
old_value = self.value
value = super(ImageEditor, self).set_value(value)
if value:
if value != old_value:
post(
lambda: value.checkout_thumbnail(self.preview_width, self.
preview_height),
self.set_image)
else:
self.clear_image()
return value
def draw_border(self):
self.label.setFrameShape(QtGui.QFrame.Box)
self.label.setFrameShadow(QtGui.QFrame.Plain)
self.label.setLineWidth(1)
self.label.setFixedSize(self.preview_width, self.preview_height)
def show_fullscreen(self, image):
lite_box = LiteBoxView(self)
lite_box.show_fullscreen_image(image)
def eventFilter(self, object, event):
if not object.isWidgetType():
return False
if event.type() != QtCore.QEvent.MouseButtonPress:
return False
if event.modifiers() != QtCore.Qt.NoModifier:
return False
if event.buttons() == QtCore.Qt.LeftButton:
if self.value:
post(lambda: self.value.checkout_thumbnail(640, 480),
self.show_fullscreen)
return True
return False
class ImageEditor( FileEditor ):
"""Editor to view and edit image files, this is a customized
implementation of a FileEditor"""
filter = """Image files (*.bmp *.jpg *.jpeg *.mng *.png *.pbm *.pgm *.ppm
*.tiff *.xbm *.xpm) All files (*)"""
def __init__( self,
parent=None,
storage=None,
preview_width=100,
preview_height=100,
field_name = 'image',
**kwargs ):
self.preview_width = preview_width
self.preview_height = preview_height
FileEditor.__init__(
self, parent=parent, storage=storage,
**kwargs
)
self.setObjectName( field_name )
def setup_widget(self):
layout = QtGui.QVBoxLayout()
layout.setSpacing( 0 )
label_button_layout = QtGui.QHBoxLayout()
#
# Setup label
#
self.label = QtGui.QLabel(self)
self.label.installEventFilter(self)
self.label.setAlignment( Qt.AlignHCenter|Qt.AlignVCenter )
label_button_layout.addWidget(self.label)
self.filename = DecoratedLineEdit( self )
self.filename.setVisible( False )
#
# Setup buttons
#
button_layout = QtGui.QVBoxLayout()
button_layout.setSpacing( 0 )
button_layout.setContentsMargins( 0, 0, 0, 0)
self.save_as_button = QtGui.QToolButton()
self.save_as_button.setFocusPolicy( Qt.ClickFocus )
self.save_as_button.setIcon(self.save_as_icon.getQIcon())
self.save_as_button.setToolTip(_('Save file as'))
self.save_as_button.setAutoRaise(True)
self.save_as_button.clicked.connect(self.save_as_button_clicked)
self.open_button = QtGui.QToolButton()
self.open_button.setIcon(self.open_icon.getQIcon())
self.open_button.setAutoRaise(True)
self.open_button.setToolTip(unicode(_('open image')))
self.open_button.clicked.connect(self.open_button_clicked)
self.add_button = QtGui.QToolButton()
self.add_button.setFocusPolicy( Qt.StrongFocus )
self.add_button.setIcon(self.add_icon.getQIcon())
self.add_button.setToolTip(_('Attach file'))
self.add_button.clicked.connect(self.add_button_clicked)
self.add_button.setAutoRaise(True)
self.clear_button = QtGui.QToolButton()
self.clear_button.setIcon(self.clear_icon.getQIcon())
self.clear_button.setToolTip(unicode(_('delete image')))
self.clear_button.setAutoRaise(True)
self.clear_button.clicked.connect(self.clear_button_clicked)
self.clear_button.setFocusPolicy(Qt.ClickFocus)
copy_button = QtGui.QToolButton()
copy_button.setDefaultAction( ActionFactory.copy(self, self.copy_to_clipboard ) )
copy_button.setAutoRaise(True)
copy_button.setFocusPolicy(Qt.ClickFocus)
paste_button = QtGui.QToolButton()
paste_button.setDefaultAction( ActionFactory.paste(self, self.paste_from_clipboard ) )
paste_button.setAutoRaise(True)
paste_button.setObjectName('paste')
paste_button.setFocusPolicy(Qt.ClickFocus)
#button_layout.addStretch()
button_layout.addWidget(self.open_button)
button_layout.addWidget(self.save_as_button)
button_layout.addWidget(self.add_button)
button_layout.addWidget(self.clear_button)
button_layout.addWidget(copy_button)
button_layout.addWidget(paste_button)
label_button_layout.addLayout(button_layout)
label_button_layout.addStretch()
layout.addLayout( label_button_layout )
#layout.addStretch()
self.setLayout( layout )
self.clear_image()
QtGui.QApplication.clipboard().dataChanged.connect( self.clipboard_data_changed )
self.clipboard_data_changed()
@QtCore.pyqtSlot()
def clipboard_data_changed(self):
paste_button = self.findChild(QtGui.QWidget, 'paste')
if paste_button:
mime_data = QtGui.QApplication.clipboard().mimeData()
paste_button.setVisible( mime_data.hasImage() )
@QtCore.pyqtSlot()
def paste_from_clipboard(self):
"""Paste an image from the clipboard into the editor"""
mime_data = QtGui.QApplication.clipboard().mimeData()
if mime_data.hasImage():
byte_array = QtCore.QByteArray()
buffer = QtCore.QBuffer( byte_array )
image = QtGui.QImage( mime_data.imageData() )
image.save( buffer, 'PNG' )
def create_checkin( byte_array ):
return lambda:self.checkin_byte_array(byte_array, '.png')
post( create_checkin( byte_array ), self.stored_file_ready )
def checkin_byte_array(self, byte_array, suffix):
"""Check a byte_array into the storage"""
import cStringIO
stream = cStringIO.StringIO( byte_array.data() )
return self.storage.checkin_stream( 'clipboard', suffix, stream)
def set_enabled(self, editable=True):
self.clear_button.setEnabled(editable)
self.open_button.setEnabled(editable)
self.add_button.setEnabled(editable)
self.label.setEnabled(editable)
def set_pixmap(self, pixmap):
self.label.setPixmap(pixmap)
self.draw_border()
def set_image(self, image):
self.set_pixmap(QtGui.QPixmap.fromImage(image))
@QtCore.pyqtSlot()
def copy_to_clipboard(self):
"""Copy the image to the clipboard"""
if self.value:
post( self.value.checkout_image, self.set_image_to_clipboard )
def set_image_to_clipboard(self, image):
clipboard = QtGui.QApplication.clipboard()
clipboard.setImage( image )
def clear_image(self):
dummy_image = Icon('tango/32x32/mimetypes/image-x-generic.png')
self.set_pixmap(dummy_image.getQPixmap())
def set_value(self, value):
old_value = self.value
value = super( ImageEditor, self ).set_value( value )
if value:
if value != old_value:
post(
lambda:value.checkout_thumbnail(
self.preview_width,
self.preview_height
),
self.set_image
)
else:
self.clear_image()
return value
def draw_border(self):
self.label.setFrameShape(QtGui.QFrame.Box)
self.label.setFrameShadow(QtGui.QFrame.Plain)
self.label.setLineWidth(1)
self.label.setFixedSize(self.preview_width, self.preview_height)
def show_fullscreen(self, image):
lite_box = LiteBoxView(self)
lite_box.show_fullscreen_image(image)
def eventFilter(self, object, event):
if not object.isWidgetType():
return False
if event.type() != QtCore.QEvent.MouseButtonPress:
return False
if event.modifiers() != QtCore.Qt.NoModifier:
return False
if event.buttons() == QtCore.Qt.LeftButton:
if self.value:
post(
lambda:self.value.checkout_thumbnail(640,480),
self.show_fullscreen
)
return True
return False
class ImageEditor( FileEditor ):
"""Editor to view and edit image files, this is a customized
implementation of a FileEditor"""
filter = """Image files (*.bmp *.jpg *.jpeg *.mng *.png *.pbm *.pgm *.ppm *.tiff *.xbm *.xpm)
All files (*)"""
def __init__( self,
parent=None,
storage=None,
preview_width=100,
preview_height=100,
field_name = 'image',
**kwargs ):
self.preview_width = preview_width
self.preview_height = preview_height
FileEditor.__init__(
self, parent=parent, storage=storage,
**kwargs
)
self.setObjectName( field_name )
def setup_widget(self):
layout = QtWidgets.QHBoxLayout()
#
# Setup label
#
self.label = QtWidgets.QLabel(self)
self.label.installEventFilter(self)
self.label.setAlignment( Qt.AlignHCenter|Qt.AlignVCenter )
layout.addWidget(self.label)
self.filename = DecoratedLineEdit( self )
self.filename.setVisible( False )
#
# Setup buttons
#
button_layout = QtWidgets.QVBoxLayout()
button_layout.setSpacing( 0 )
button_layout.setContentsMargins( 0, 0, 0, 0)
copy_button = QtWidgets.QToolButton()
copy_button.setDefaultAction( ActionFactory.copy(self, self.copy_to_clipboard ) )
copy_button.setAutoRaise(True)
copy_button.setFocusPolicy(Qt.ClickFocus)
paste_button = QtWidgets.QToolButton()
paste_button.setDefaultAction( ActionFactory.paste(self, self.paste_from_clipboard ) )
paste_button.setAutoRaise(True)
paste_button.setObjectName('paste')
paste_button.setFocusPolicy(Qt.ClickFocus)
self.add_actions(self.actions, button_layout)
button_layout.addWidget(copy_button)
button_layout.addWidget(paste_button)
button_layout.addStretch()
layout.addLayout(button_layout)
#label_button_layout.addStretch()
self.setLayout( layout )
self.clear_image()
QtWidgets.QApplication.clipboard().dataChanged.connect( self.clipboard_data_changed )
self.clipboard_data_changed()
# horizontal policy is always expanding, to fill the width of a column
# in a form
vertical_size_policy = QtGui.QSizePolicy.Expanding
if self.preview_width != 0:
self.label.setMinimumWidth(self.preview_width)
if self.preview_height != 0:
self.label.setFixedHeight(self.preview_height)
vertical_size_policy = QtGui.QSizePolicy.Fixed
self.setSizePolicy(QtGui.QSizePolicy.Expanding, vertical_size_policy)
self.label.setSizePolicy(QtGui.QSizePolicy.Expanding, vertical_size_policy)
@QtCore.qt_slot()
def clipboard_data_changed(self):
paste_button = self.findChild(QtWidgets.QWidget, 'paste')
if paste_button:
mime_data = QtWidgets.QApplication.clipboard().mimeData()
paste_button.setVisible( mime_data.hasImage() )
@QtCore.qt_slot()
def paste_from_clipboard(self):
"""Paste an image from the clipboard into the editor"""
mime_data = QtWidgets.QApplication.clipboard().mimeData()
if mime_data.hasImage():
byte_array = QtCore.QByteArray()
buffer = QtCore.QBuffer( byte_array )
image = QtGui.QImage( mime_data.imageData() )
image.save( buffer, 'PNG' )
def create_checkin( byte_array ):
return lambda:self.checkin_byte_array(byte_array, '.png')
post( create_checkin( byte_array ), self.stored_file_ready )
def checkin_byte_array(self, byte_array, suffix):
"""Check a byte_array into the storage"""
stream = six.StringIO( byte_array.data() )
return self.storage.checkin_stream( 'clipboard', suffix, stream)
def set_enabled(self, editable=True):
self.setAcceptDrops(editable)
def set_pixmap(self, pixmap):
self.label.setPixmap(pixmap)
self.draw_border()
def set_image(self, image):
self.set_pixmap(QtGui.QPixmap.fromImage(image))
@QtCore.qt_slot()
def copy_to_clipboard(self):
"""Copy the image to the clipboard"""
if self.value:
post( self.value.checkout_image, self.set_image_to_clipboard )
def set_image_to_clipboard(self, image):
clipboard = QtWidgets.QApplication.clipboard()
clipboard.setImage( image )
def clear_image(self):
dummy_image = Icon('tango/32x32/mimetypes/image-x-generic.png')
self.set_pixmap(dummy_image.getQPixmap())
def set_value(self, value):
value = super( ImageEditor, self ).set_value( value )
if value is not None:
if value.name != self.file_name:
if self.preview_height and self.preview_width:
post(
lambda:value.checkout_thumbnail(
self.preview_width,
self.preview_height
),
self.set_image
)
else:
post(
lambda:value.checkout_image(),
self.set_image
)
# store the file name of which a previous is shown in the editor,
# to ensure the preview is updated when this changes
self.file_name = value.name
else:
self.clear_image()
return value
def draw_border(self):
self.label.setFrameShape(QtWidgets.QFrame.Box)
self.label.setFrameShadow(QtWidgets.QFrame.Plain)
self.label.setLineWidth(1)
def show_fullscreen(self, image):
lite_box = LiteBoxView(self)
lite_box.show_fullscreen_image(image)
def eventFilter(self, object, event):
if not object.isWidgetType():
return False
if event.type() != QtCore.QEvent.MouseButtonPress:
return False
if event.modifiers() != QtCore.Qt.NoModifier:
return False
if event.buttons() == QtCore.Qt.LeftButton:
if self.value:
post(
lambda:self.value.checkout_thumbnail(640,480),
self.show_fullscreen
)
return True
return False