class Window(QMainWindow):
def __init__(self):
QMainWindow.__init__(self)
self.images = []
self.index = -1
self.ratio = 1 # ratio for QLabel image
self.mouse_position = None
self.settings = None
# Extensions
self.extensions = []
for format in QImageReader.supportedImageFormats():
self.extensions.append(format.data().decode('utf-8'))
# Filters
self.filters = []
for extension in self.extensions:
self.filters.append('*.{0}'.format(str(extension)))
# UI
self.set_up_ui()
# settings
self.load_settings()
def on_message_received(self, msg):
""" on message received from single application
Args:
msg (string): file path
"""
self.create_images(msg)
self.display_image()
def set_up_ui(self):
# Status Bar
self.status_bar = self.statusBar()
self.label_name = QLabel()
self.label_numero = QLabel()
self.status_bar.addPermanentWidget(self.label_name, 1)
self.status_bar.addPermanentWidget(self.label_numero, 0)
# Main Window
self.setWindowTitle('BaloViewer')
self.setWindowIcon(QIcon('baloviewer.ico'))
# Label image
self.image = QLabel()
self.image.setScaledContents(True)
# Scroll area
self.scroll_area = QScrollArea()
self.scroll_area.setWidget(self.image)
self.scroll_area.showMaximized()
self.scroll_area.setFocusPolicy(Qt.FocusPolicy.NoFocus)
self.scroll_area.setAlignment(Qt.AlignmentFlag.AlignCenter)
self.scroll_area.viewport().installEventFilter(self)
# image list
self.image_gallery = ImageGallery()
self.image_gallery.itemClicked.connect(self.image_gallery_clicked)
self.image_gallery.viewport().installEventFilter(self)
self.dock_widget = QDockWidget('Image Gallery', self)
self.dock_widget.setWidget(self.image_gallery)
self.dock_widget.setFloating(False)
self.addDockWidget(Qt.LeftDockWidgetArea, self.dock_widget)
# central widget
self.setCentralWidget(self.scroll_area)
# Action bar
self.create_actions()
self.create_menubar()
self.create_toolbar()
# option parser
parser = OptionParser()
parser.add_option("-f", "--file", dest="filename", help="open a file")
(options, args) = parser.parse_args()
parser_file = options.filename
if parser_file is not None and os.path.isfile(parser_file):
self.create_images(parser_file)
self.display_image()
def create_actions(self):
# Action Open
self.action_open = QAction(QIcon.fromTheme('document-open'), 'Open',
self)
self.action_open.setShortcut('Ctrl+O')
self.action_open.setStatusTip('Open file')
self.action_open.triggered.connect(self.open)
# Action Save
self.action_save = QAction(QIcon.fromTheme('document-save'), 'Save',
self)
self.action_save.setShortcut('Ctrl+S')
self.action_save.setStatusTip('Save file')
self.action_save.triggered.connect(self.save)
# Action Copy
self.action_copy = QAction(QIcon.fromTheme('edit-copy'), 'Copy', self)
self.action_copy.setStatusTip('Copy')
self.action_copy.triggered.connect(self.copy)
# Action move
self.action_move = QAction(QIcon.fromTheme('edit-cut'), 'Move', self)
self.action_move.setStatusTip('Move')
self.action_move.triggered.connect(self.move)
# Action Delete
self.action_delete = QAction(QIcon.fromTheme('edit-delete'), 'Delete',
self)
self.action_delete.setStatusTip('Delete')
self.action_delete.triggered.connect(self.delete)
# Action Quit
self.action_quit = QAction(QIcon.fromTheme('application-exit'), 'Quit',
self)
self.action_quit.setShortcut('Ctrl+Q')
self.action_quit.setStatusTip('Quit')
self.action_quit.triggered.connect(self.close)
# Action Rotate left
self.action_rotate_left = QAction(
QIcon.fromTheme('object-rotate-left'), 'Rotate left', self)
self.action_rotate_left.setStatusTip('Rotate left')
self.action_rotate_left.triggered.connect(self.rotate_left)
# Action Rotate right
self.action_rotate_right = QAction(
QIcon.fromTheme('object-rotate-right'), 'Rotate right', self)
self.action_rotate_right.setStatusTip('Rotate right')
self.action_rotate_right.triggered.connect(self.rotate_right)
# Action Mirror
self.action_flip_horizontal = QAction(
QIcon.fromTheme('object-flip-horizontal'), 'Flip horizontally',
self)
self.action_flip_horizontal.setStatusTip('Flip horizontally')
self.action_flip_horizontal.triggered.connect(self.flip_horizontal)
# Action Flip vertical
self.action_flip_vertical = QAction(
QIcon.fromTheme('object-flip-vertical'), 'Flip vertically', self)
self.action_flip_vertical.setStatusTip('Flip vertically')
self.action_flip_vertical.triggered.connect(self.flip_vertical)
# Action Previous image
self.action_previous_image = QAction(QIcon.fromTheme('go-previous'),
'Previous image', self)
self.action_previous_image.setStatusTip('Previous image')
self.action_previous_image.triggered.connect(self.previous_image)
# Action Full screen
self.action_fullscreen = QAction(QIcon.fromTheme('view-fullscreen'),
'Full screen', self)
self.action_fullscreen.setStatusTip('Full screen')
self.action_fullscreen.triggered.connect(self.fullscreen)
# Action Normal size
self.action_normal_size = QAction(QIcon.fromTheme('zoom-original'),
'Normal size', self)
self.action_normal_size.setStatusTip('Normal Size')
self.action_normal_size.triggered.connect(self.normal_size)
# Action Fit Screen
self.action_fit_screen = QAction(QIcon.fromTheme('zoom-fit-best'),
'Fit to screen', self)
self.action_fit_screen.setStatusTip('Fit to screen')
self.action_fit_screen.setCheckable(True)
self.action_fit_screen.triggered.connect(self.fit_screen)
# Action Zoom in
self.action_zoom_in = QAction(QIcon.fromTheme('zoom-in'), 'Zoom in',
self)
self.action_zoom_in.setStatusTip('Zoom in')
self.action_zoom_in.triggered.connect(self.zoom_in)
# Action Zoom out
self.action_zoom_out = QAction(QIcon.fromTheme('zoom-out'), 'Zoom out',
self)
self.action_zoom_out.setStatusTip('Zoom out')
self.action_zoom_out.triggered.connect(self.zoom_out)
# Action Fit height
self.action_fit_vertical = QAction('Fit vertically', self)
self.action_fit_vertical.setStatusTip('Fit vertically')
self.action_fit_vertical.setCheckable(True)
self.action_fit_vertical.triggered.connect(self.fit_height)
# Action Fit width
self.action_fit_horizontal = QAction('Fit horizontally', self)
self.action_fit_horizontal.setStatusTip('Fit horizontally')
self.action_fit_horizontal.setCheckable(True)
self.action_fit_horizontal.triggered.connect(self.fit_width)
# Action Fit width
self.action_fit_horizontal = QAction('Fit horizontally', self)
self.action_fit_horizontal.setStatusTip('Fit horizontally')
self.action_fit_horizontal.setCheckable(True)
self.action_fit_horizontal.triggered.connect(self.fit_width)
# Action Image list
self.action_image_gallery = QAction('Image gallery', self)
self.action_image_gallery.setStatusTip('Image gallery')
self.action_image_gallery.setCheckable(True)
self.action_image_gallery.triggered.connect(
self.image_gallery_triggered)
# Action Next_image
self.action_next_image = QAction(QIcon.fromTheme('go-next'),
'Next image', self)
self.action_next_image.setStatusTip('Next image')
self.action_next_image.triggered.connect(self.next_image)
# Action First image
self.action_first_image = QAction(QIcon.fromTheme('go-first'),
'First image', self)
self.action_first_image.setStatusTip('First image')
self.action_first_image.triggered.connect(self.first_image)
# Action Last image
self.action_last_image = QAction(QIcon.fromTheme('go-last'),
'Last image', self)
self.action_last_image.setStatusTip('Last image')
self.action_last_image.triggered.connect(self.last_image)
# Action About
self.action_about = QAction(QIcon.fromTheme('help-about'), 'About',
self)
self.action_about.setStatusTip('About')
self.action_about.triggered.connect(self.about)
def create_menubar(self):
self.menubar = self.menuBar()
# File
self.menu_file = self.menubar.addMenu('File')
self.menu_file.addAction(self.action_open)
self.menu_file.addAction(self.action_save)
self.menu_file.addSeparator()
self.menu_file.addAction(self.action_copy)
self.menu_file.addAction(self.action_move)
self.menu_file.addAction(self.action_delete)
self.menu_file.addSeparator()
self.menu_file.addAction(self.action_quit)
# Edit
self.menu_edit = self.menubar.addMenu('Edit')
self.menu_edit.addAction(self.action_rotate_left)
self.menu_edit.addAction(self.action_rotate_right)
self.menu_edit.addSeparator()
self.menu_edit.addAction(self.action_flip_horizontal)
self.menu_edit.addAction(self.action_flip_vertical)
# View
self.menu_view = self.menubar.addMenu('View')
self.menu_view.addAction(self.action_fullscreen)
self.menu_view.addAction(self.action_normal_size)
self.menu_view.addAction(self.action_fit_screen)
self.menu_view.addSeparator()
self.menu_view.addAction(self.action_zoom_in)
self.menu_view.addAction(self.action_zoom_out)
self.menu_view.addSeparator()
self.menu_view.addAction(self.action_fit_vertical)
self.menu_view.addAction(self.action_fit_horizontal)
self.menu_view.addSeparator()
self.menu_view.addAction(self.action_image_gallery)
# Go
self.menu_go = self.menubar.addMenu('Go')
self.menu_go.addAction(self.action_previous_image)
self.menu_go.addAction(self.action_next_image)
self.menu_go.addSeparator()
self.menu_go.addAction(self.action_first_image)
self.menu_go.addAction(self.action_last_image)
# About
self.menu_about = self.menubar.addMenu('About')
self.menu_about.addAction(self.action_about)
def create_toolbar(self):
self.toolbar = self.addToolBar('Tool bar')
self.toolbar.addAction(self.action_open)
self.toolbar.addAction(self.action_save)
self.toolbar.addSeparator()
self.toolbar.addAction(self.action_fullscreen)
self.toolbar.addAction(self.action_normal_size)
self.toolbar.addAction(self.action_fit_screen)
self.toolbar.addSeparator()
self.toolbar.addAction(self.action_zoom_in)
self.toolbar.addAction(self.action_zoom_out)
self.toolbar.addSeparator()
self.toolbar.addAction(self.action_rotate_left)
self.toolbar.addAction(self.action_rotate_right)
self.toolbar.addSeparator()
self.toolbar.addAction(self.action_first_image)
self.toolbar.addAction(self.action_previous_image)
self.toolbar.addAction(self.action_next_image)
self.toolbar.addAction(self.action_last_image)
self.toolbar.addSeparator()
self.toolbar.addAction(self.action_copy)
self.toolbar.addAction(self.action_move)
def load_settings(self):
self.settings = QSettings()
check_state = self.settings.value('view/image_gallery',
True,
type=bool)
self.action_image_gallery.setChecked(check_state)
self.image_gallery_triggered()
def contextMenuEvent(self, QContextMenuEvent):
menu = QMenu()
menu.addAction(self.action_fullscreen)
menu.addSeparator()
menu.addAction(self.action_image_gallery)
menu.addSeparator()
menu.addAction(self.action_previous_image)
menu.addAction(self.action_next_image)
menu.addSeparator()
menu.addAction(self.action_normal_size)
menu.addAction(self.action_fit_screen)
menu.addAction(self.action_fit_vertical)
menu.addAction(self.action_fit_horizontal)
menu.addSeparator()
menu.addAction(self.action_zoom_in)
menu.addAction(self.action_zoom_out)
menu.addSeparator()
menu.addAction(self.action_copy)
menu.addAction(self.action_move)
menu.addSeparator()
menu.addAction(self.action_delete)
menu.exec_(QContextMenuEvent.globalPos())
def eventFilter(self, obj, event):
""" filter events for wheel events
Args:
obj (QWidget): scroll_area
event (QEvent): event
"""
# try:
if event.type() == QEvent.Wheel:
if event.angleDelta().y() < 0:
self.next_image()
else:
self.previous_image()
return True
elif event.type() == QEvent.MouseButtonPress and event.button(
) == Qt.RightButton:
index = self.image_gallery.select_row_pos()
if index > -1:
self.index = index
self.display_image()
return True
# pass the event on to the parent class
return super(QMainWindow, self).eventFilter(obj, event)
def keyPressEvent(self, event):
key = event.key()
if key == Qt.Key_Delete:
self.delete()
elif key == Qt.Key_Left:
self.previous_image()
elif key == Qt.Key_Right:
self.next_image()
elif key == Qt.Key_PageUp:
self.first_image()
elif key == Qt.Key_PageDown:
self.last_image()
elif key == Qt.Key_Escape and self.isFullScreen():
self.fullscreen()
else:
QWidget.keyPressEvent(self, event)
def mouseDoubleClickEvent(self, QMouseEvent):
self.fullscreen()
def mousePressEvent(self, QMouseEvent):
self.mouse_position = QMouseEvent.pos()
def mouseMoveEvent(self, QMouseEvent):
diff = QPoint(QMouseEvent.pos() - self.mouse_position)
self.mouse_position = QMouseEvent.pos()
self.scroll_area.verticalScrollBar().setValue(
self.scroll_area.verticalScrollBar().value() - diff.y())
self.scroll_area.horizontalScrollBar().setValue(
self.scroll_area.horizontalScrollBar().value() - diff.x())
def resizeEvent(self, event):
if not self.index == -1:
self.display_image()
def create_images(self, filename):
"""Create image list
Args:
filename (string): file from which to retrieve the list of images in the folder
"""
self.images.clear()
# get images only with an allowed extension
for ext in self.extensions:
self.images += glob.glob(
os.path.join(
glob.escape(os.path.dirname(filename)),
'*.' + ''.join('[%s%s]' % (e.lower(), e.upper())
for e in ext)))
self.images.sort()
if filename in self.images:
self.index = self.images.index(filename)
else:
self.index = -1
# iamge list
self.image_gallery.add_images(self.images)
def remove_index(self):
""" remove file from list images and display next or previous image
"""
del self.images[self.index]
self.image_gallery.remove_row(self.index)
if len(self.images) == 0:
self.images.clear()
self.index = -1
self.image.clear()
self.image.resize(self.image.minimumSizeHint())
elif self.index < len(self.images) - 1:
self.display_image()
else:
self.index = len(self.images) - 1
self.display_image()
def display_image(self):
if not self.index == -1:
self.image.clear()
self.image.resize(self.image.minimumSizeHint())
file = self.images[self.index]
if os.path.isfile(file):
self.label_name.setText(file)
self.label_numero.setText(
str(self.index + 1) + ' / ' + str(len(self.images)))
# image list
self.image_gallery.select_row(self.index)
image_reader = QImageReader(file)
if image_reader.imageCount() > 1:
# Animated image
movie = QMovie(file)
movie.setCacheMode(QMovie.CacheAll)
movie.jumpToFrame(0)
movie_size = movie.currentPixmap().size()
self.image.setMovie(movie)
self.image.resize(movie_size)
movie.start()
else:
self.image.setPixmap(QPixmap(file))
self.image.resize(self.image.pixmap().size())
# fit image
if self.action_fit_screen.isChecked():
self.fit_screen()
elif self.action_fit_horizontal.isChecked():
self.fit_width()
elif self.action_fit_vertical.isChecked():
self.fit_height()
else:
self.ratio = 1.0
self.action_zoom_in.setEnabled(True)
self.action_zoom_out.setEnabled(True)
# scrollbar position
self.scroll_area.verticalScrollBar().setSliderPosition(0)
self.scroll_area.horizontalScrollBar().setSliderPosition(0)
def resize_image(self):
if self.action_fit_screen.isChecked():
self.fit_screen()
elif self.action_fit_horizontal.isChecked():
self.fit_width()
elif self.action_fit_vertical.isChecked():
self.fit_height()
elif self.image.pixmap():
self.image.resize(self.ratio * self.image.pixmap().size())
elif movie := self.image.movie():
movie.jumpToFrame(0)
movie_size = movie.currentPixmap().size()
self.image.resize(self.ratio * movie_size)
