class FileProgressBar(QWidget):
"""Simple progress bar with a label"""
MAX_LABEL_LENGTH = 60
def __init__(self, parent, *args, **kwargs):
QWidget.__init__(self, parent)
self.pap = parent
self.status_text = QLabel(self)
self.bar = QProgressBar(self)
self.bar.setRange(0, 0)
layout = QVBoxLayout()
layout.addWidget(self.status_text)
layout.addWidget(self.bar)
self.setLayout(layout)
def __truncate(self, text):
ellipsis = '...'
part_len = (self.MAX_LABEL_LENGTH - len(ellipsis)) / 2.0
left_text = text[:int(math.ceil(part_len))]
right_text = text[-int(math.floor(part_len)):]
return left_text + ellipsis + right_text
@Slot(str, int)
def set_label_file(self, file, size):
text = self.__truncate(file)
status_str = 'Downloading file list: {0} ({1})'.format(
text, humanize.naturalsize(size))
self.status_text.setText(status_str)
def set_bounds(self, a, b):
self.bar.setRange(a, b)
def reset_files(self):
self.status_text.setText(" Downloading file(s)...")
self.bar.show()
def reset_status(self):
self.status_text.setText(" Download Complete!")
self.bar.hide()
@Slot(str, int, int, int)
def update_progress(self, file, num_chunks, bytes_recv, total_bytes):
text = " Downloading {0} - {1}/{2} (Chunk {3})"
self.status_text.setText(
text.format(file, humanize.naturalsize(bytes_recv),
humanize.naturalsize(total_bytes), num_chunks))
self.bar.setValue(bytes_recv)
def __on_reporter_created(reporter):
initial_geometry = self.geometry()
self.progress_bar_container_widget.setVisible(True)
self.progress_bar_divider_line.setVisible(True)
progress_bar = QProgressBar(self.progress_bar_container_widget)
progress_bar.setAlignment(Qt.AlignCenter)
reporter.progress_bar = progress_bar
self.__reporter_map[reporter] = progress_bar
self.progress_bar_container_layout.addWidget(progress_bar)
progress_bar.show()
current_geometry = self.geometry()
current_geometry.moveCenter(initial_geometry.center())
self.setGeometry(current_geometry)
class GcodeBackplot(QBackPlot):
line_selected = Signal(int)
gcode_error = Signal(str)
def __init__(self, parent=None, standalone=False):
super(GcodeBackplot, self).__init__(parent)
# This prevents doing unneeded initialization
# when QtDesginer loads the plugin.
if parent is None and not standalone:
return
self.show_overlay = False # no DRO or DRO overlay
self.program_alpha = True
self.grid_size = 1
self._reload_filename = None
# Add loading progress bar and abort button
self.progressBar = QProgressBar(visible=False)
self.progressBar.setFormat("Loading backplot: %p%")
self.abortButton = QPushButton('Abort', visible=False)
hBox = QHBoxLayout()
hBox.addWidget(self.progressBar)
hBox.addWidget(self.abortButton)
vBox = QVBoxLayout(self)
vBox.addStretch()
vBox.addLayout(hBox)
self.abortButton.clicked.connect(self.abort)
STATUS.actual_position.onValueChanged(self.update)
STATUS.joint_actual_position.onValueChanged(self.update)
STATUS.homed.onValueChanged(self.update)
STATUS.limit.onValueChanged(self.update)
STATUS.tool_in_spindle.onValueChanged(self.update)
STATUS.motion_mode.onValueChanged(self.update)
STATUS.current_vel.onValueChanged(self.update)
STATUS.g5x_offset.onValueChanged(self.reloadBackplot)
STATUS.g92_offset.onValueChanged(self.reloadBackplot)
# Connect status signals
STATUS.file.notify(self.loadBackplot)
# STATUS.reload_backplot.notify(self.reloadBackplot)
STATUS.program_units.notify(lambda v: self.setMetricUnits(v == 2))
def loadBackplot(self, fname):
LOG.debug('load the display: {}'.format(fname.encode('utf-8')))
self._reload_filename = fname
self.load(fname)
@Slot()
def reloadBackplot(self):
QTimer.singleShot(100, lambda: self._reloadBackplot())
def _reloadBackplot(self):
LOG.debug('reload the display: {}'.format(self._reload_filename))
dist = self.get_zoom_distance()
try:
self.load(self._reload_filename)
self.set_zoom_distance(dist)
except:
LOG.warning("Problem reloading backplot file: {}".format(self._reload_filename), exc_info=True)
# ==========================================================================
# Override QBackPlot methods
# ==========================================================================
def report_loading_started(self):
self.progressBar.show()
self.abortButton.show()
self.start = time.time()
def report_progress_percentage(self, percentage):
QApplication.processEvents()
self.progressBar.setValue(percentage)
def report_loading_finished(self):
print((time.time() - self.start))
self.progressBar.hide()
self.abortButton.hide()
# overriding functions
def report_gcode_error(self, result, seq, filename):
error = gcode.strerror(result)
file = os.path.basename(filename)
line = seq - 1
msg = "G-code error in '{}' near line {}: {}".format(file, line, error)
LOG.error(msg)
STATUS.backplot_gcode_error.emit(msg)
# Override gremlin's / glcannon.py function so we can emit a GObject signal
def update_highlight_variable(self, line):
self.highlight_line = line
if line is None:
line = -1
STATUS.backplot_line_selected.emit(line)
# ==============================================================================
# QtDesigner property setters/getters
# ==============================================================================
@Slot(str)
def setView(self, view):
view = view.lower()
if self.is_lathe:
if view not in ['p', 'y', 'y2']:
return False
elif view not in ['p', 'x', 'y', 'z', 'z2']:
return False
self.current_view = view
if self.initialised:
self.set_current_view()
def getView(self):
return self.current_view
defaultView = Property(str, getView, setView)
@Slot()
def setViewP(self):
self.setView('p')
@Slot()
def setViewX(self):
self.setView('x')
@Slot()
def setViewY(self):
self.setView('y')
@Slot()
def setViewZ(self):
self.setView('z')
@Slot()
def setViewZ2(self):
self.setView('z2')
@Slot()
def clearLivePlot(self):
self.clear_live_plotter()
@Slot()
def zoomIn(self):
self.zoomin()
@Slot()
def zoomOut(self):
self.zoomout()
@Slot(bool)
def alphaBlend(self, alpha):
self.program_alpha = alpha
self.update()
@Slot(bool)
def showGrid(self, grid):
self.grid_size = int(grid) # ugly hack for now
self.update()
# @Slot(str) Fixme check for the correct data type
def setdro(self, state):
self.enable_dro = state
self.updateGL()
def getdro(self):
return self.enable_dro
_dro = Property(bool, getdro, setdro)
# DTG
# @Slot(str) Fixme check for the correct data type
def setdtg(self, state):
self.show_dtg = state
self.updateGL()
def getdtg(self):
return self.show_dtg
_dtg = Property(bool, getdtg, setdtg)
# METRIC
# @Slot(str) Fixme check for the correct data type
def setMetricUnits(self, metric):
self.metric_units = metric
self.updateGL()
def getMetricUnits(self):
return self.metric_units
metricUnits = Property(bool, getMetricUnits, setMetricUnits)
# @Slot(str) Fixme check for the correct data type
def setProgramAlpha(self, alpha):
self.program_alpha = alpha
self.updateGL()
def getProgramAlpha(self):
return self.program_alpha
renderProgramAlpha = Property(bool, getProgramAlpha, setProgramAlpha)
# @Slot(str) Fixme check for the correct data type
def setBackgroundColor(self, color):
self.colors['back'] = color.getRgbF()[:3]
self.updateGL()
def getBackgroundColor(self):
r, g, b = self.colors['back']
color = QColor()
color.setRgbF(r, g, b, 1.0)
return color
backgroundColor = Property(QColor, getBackgroundColor, setBackgroundColor)
class MainWindow(QMainWindow):
def __init__(self, parent=None):
QMainWindow.__init__(self, parent)
uic.loadUi(f'{pathlib.Path(__file__).parent}/UI/mainwindow.ui', self)
self.setWindowTitle('BlastSightDM')
self.setWindowIcon(IconCollection.get('blastsight.png'))
self.toolbar.setWindowTitle('Toolbar')
self.setFocusPolicy(Qt.StrongFocus)
self.setAcceptDrops(True)
self.statusBar.showMessage('Ready')
# Attributes
self.filters_dict = {
'mesh': {
'load': 'Mesh Files (*.dxf *.off *.h5m);;'
'DXF Files (*.dxf);;'
'OFF Files (*.off);;'
'H5M Files (*.h5m);;'
'All Files (*.*)',
'export': 'BlastSight Mesh (*.h5m);;'
'OFF File (*.off);;'
},
'block': {
'load': 'Block Files (*.csv *.h5p *.out);;'
'CSV Files (*.csv);;'
'H5P Files (*.h5p);;'
'GSLib Files (*.out);;'
'All Files (*.*)',
'export': 'BlastSight Blocks (*.h5p);;'
'CSV File (*.csv);;'
},
'point': {
'load': 'Point Files (*.csv *.h5p *.out);;'
'CSV Files (*.csv);;'
'H5P Files (*.h5p);;'
'GSLib Files (*.out);;'
'All Files (*.*)',
'export': 'BlastSight Points (*.h5p);;'
'CSV File (*.csv);;'
},
'line': {
'load': 'Line Files (*.csv *.dxf);;'
'CSV Files (*.csv);;'
'DXF Files (*.dxf);;'
'All Files (*.*)',
'export': 'CSV File (*.csv);;'
},
'tube': {
'load': 'Line Files (*.csv *.dxf);;'
'CSV Files (*.csv);;'
'DXF Files (*.dxf);;'
'All Files (*.*)',
'export': 'CSV File (*.csv);;'
}
}
self.settings = QSettings('BlastSightDM', application='blastsight-dm', parent=self)
# Progress bar (hidden by default)
self.progress_bar = QProgressBar(self.statusBar)
self.progress_bar.setValue(0)
self.progress_bar.setMaximumWidth(self.width() / 5)
self.progress_bar.hide()
self.statusBar.addPermanentWidget(self.progress_bar)
# Grid Widget
self.grid_widget = GridWidget()
self.grid_widget.connect_viewer(self.viewer)
# XSection Widget
self.xsection_widget = XSectionWidget()
self.xsection_widget.connect_viewer(self.viewer)
# Extra actions
actions = self.toolbar.action_collection
self.toolbar.addAction(actions.action_quit)
self.setToolButtonStyle(Qt.ToolButtonTextUnderIcon)
self.generate_menubar()
self.connect_actions()
# Set auto-fit as True when starting the app
if not actions.action_autofit.isChecked():
actions.action_autofit.trigger()
# Set auto-rotate as True when starting the app
if not actions.action_autorotate.isChecked():
actions.action_autorotate.trigger()
# Set animated as True when starting the app
if not actions.action_animated.isChecked():
actions.action_animated.trigger()
# Set camera widget as hidden
self.dockWidget_camera.hide()
def generate_menubar(self) -> None:
actions = self.toolbar.action_collection
# File
self.menu_File.addAction(actions.action_load_mesh)
self.menu_File.addAction(actions.action_load_blocks)
self.menu_File.addAction(actions.action_load_points)
self.menu_File.addAction(actions.action_load_lines)
self.menu_File.addAction(actions.action_load_tubes)
self.menu_File.addSeparator()
self.menu_File.addAction(actions.action_load_mesh_folder)
self.menu_File.addAction(actions.action_load_blocks_folder)
self.menu_File.addAction(actions.action_load_points_folder)
self.menu_File.addAction(actions.action_load_lines_folder)
self.menu_File.addAction(actions.action_load_tubes_folder)
self.menu_File.addSeparator()
self.menu_File.addAction(actions.action_quit)
# View
self.menu_View.addAction(actions.action_viewer_properties)
self.menu_View.addAction(actions.action_plan_view)
self.menu_View.addAction(actions.action_north_view)
self.menu_View.addAction(actions.action_east_view)
self.menu_View.addAction(actions.action_fit_to_screen)
self.menu_View.addSeparator()
self.menu_View.addAction(actions.action_perspective_projection)
self.menu_View.addAction(actions.action_orthographic_projection)
self.menu_View.addSeparator()
self.menu_View.addAction(actions.action_grid)
self.menu_View.addAction(actions.action_take_screenshot)
# Tools
self.menu_Tools.addAction(actions.action_slice_meshes)
self.menu_Tools.addAction(actions.action_slice_blocks)
self.menu_Tools.addAction(actions.action_slice_points)
self.menu_Tools.addAction(actions.action_detection_controller)
self.menu_Tools.addAction(actions.action_measurement_controller)
self.menu_Tools.addSeparator()
self.menu_Tools.addAction(actions.action_xsection)
self.menu_Tools.addAction(actions.action_normal_controller)
# Settings
self.menu_Settings.addAction(actions.action_autofit)
self.menu_Settings.addAction(actions.action_animated)
self.menu_Settings.addAction(actions.action_autorotate)
self.menu_Settings.addAction(actions.action_turbo_rendering)
# Help
self.menu_Help.addAction(actions.action_help)
self.menu_Help.addAction(actions.action_about)
def connect_actions(self) -> None:
actions = self.toolbar.action_collection
# Toolbar/Tree/Camera
self.toolbar.connect_viewer(self.viewer)
self.toolbar.connect_tree(self.dockWidget_tree)
self.toolbar.connect_camera(self.dockWidget_camera)
self.toolbar.connect_xsection(self.xsection_widget)
self.toolbar.connect_grid(self.grid_widget)
self.cameraWidget.connect_viewer(self.viewer)
self.treeWidget.connect_viewer(self.viewer)
self.treeWidget.enable_exportability(True)
# File
actions.action_load_mesh.triggered.connect(self.dialog_load_mesh)
actions.action_load_blocks.triggered.connect(self.dialog_load_blocks)
actions.action_load_points.triggered.connect(self.dialog_load_points)
actions.action_load_lines.triggered.connect(self.dialog_load_lines)
actions.action_load_tubes.triggered.connect(self.dialog_load_tubes)
actions.action_load_mesh_folder.triggered.connect(self.dialog_load_mesh_folder)
actions.action_load_blocks_folder.triggered.connect(self.dialog_load_blocks_folder)
actions.action_load_points_folder.triggered.connect(self.dialog_load_points_folder)
actions.action_load_lines_folder.triggered.connect(self.dialog_load_lines_folder)
actions.action_load_tubes_folder.triggered.connect(self.dialog_load_tubes_folder)
actions.action_quit.triggered.connect(self.close)
# View
actions.action_take_screenshot.triggered.connect(self.slot_screenshot)
# Tools
actions.action_slice_meshes.triggered.connect(self.slot_slice_meshes)
actions.action_slice_blocks.triggered.connect(self.slot_slice_blocks)
actions.action_slice_points.triggered.connect(self.slot_slice_points)
actions.action_detection_controller.triggered.connect(self.slot_detection_controller)
actions.action_measurement_controller.triggered.connect(self.slot_measurement_controller)
actions.action_normal_controller.triggered.connect(self.slot_normal_controller)
# Help
actions.action_help.triggered.connect(self.slot_help)
actions.action_about.triggered.connect(self.slot_about)
# Viewer signals
self.viewer.signal_fps_updated.connect(self.print_fps)
self.viewer.signal_controller_updated.connect(self.slot_controller_updated)
self.viewer.signal_elements_detected.connect(self.slot_elements_detected)
self.viewer.signal_mesh_distances.connect(self.slot_mesh_distances)
self.viewer.signal_load_success.connect(self.slot_element_load_success)
self.viewer.signal_load_failure.connect(self.slot_element_load_failure)
self.viewer.signal_export_success.connect(self.slot_element_export_success)
self.viewer.signal_export_failure.connect(self.slot_element_export_failure)
self.viewer.signal_process_updated.connect(self.slot_process_updated)
self.viewer.signal_process_started.connect(self.slot_process_started)
self.viewer.signal_process_finished.connect(self.slot_process_finished)
# TreeWidget actions
self.treeWidget.signal_export_element.connect(self._dialog_export_element)
@property
def last_dir(self) -> str:
return self.settings.value('last_directory', '.')
@last_dir.setter
def last_dir(self, _last_dir: str) -> None:
self.settings.setValue('last_directory', _last_dir)
@staticmethod
def print_fps(fps) -> None:
print(f' \r', end='')
print(f'FPS: {fps:.1f} \r', end='')
"""
Status bar updates
"""
def slot_element_load_success(self, _id: int) -> None:
self.statusBar.showMessage(f'Load successful (id: {_id}).')
def slot_element_load_failure(self) -> None:
self.statusBar.showMessage(f'Failed to load.')
def slot_element_export_success(self, _id: int) -> None:
self.statusBar.showMessage(f'Export successful (id: {_id}).')
def slot_element_export_failure(self) -> None:
self.statusBar.showMessage(f'Failed to export.')
def slot_controller_updated(self, name: str) -> None:
self.statusBar.showMessage(f'Controller: {name}')
def slot_mesh_distances(self, distance_dict: dict) -> None:
self.statusBar.showMessage(f'Distance: {distance_dict.get("distance")}')
def slot_elements_detected(self, attributes: list) -> None:
id_list = sorted(map(lambda attr: attr.get('id', -1), attributes))
self.statusBar.showMessage(f'Detected elements: {id_list}')
"""
Slots for slices
"""
def handle_slices(self, description: dict, executer: callable) -> None:
# Retrieve description vectors
origin = description.get('origin')
normal = description.get('normal')
up = description.get('up')
# Execute the callable over the elements
executer(origin, normal)
# Auto-rotate camera to meet cross-section
actions = self.toolbar.action_collection
if actions.action_autorotate.isChecked():
self.viewer.set_camera_from_vectors(normal, up)
def slot_slice_meshes(self) -> None:
def executer(origin, normal) -> None:
slices = self.viewer.slice_meshes(origin, normal)
self.add_mesh_slices(slices)
def handler(description: dict) -> None:
self.handle_slices(description, executer)
# Disconnect
self.viewer.set_normal_controller()
self.viewer.signal_slice_description.disconnect()
self.viewer.set_slice_controller()
self.viewer.signal_slice_description.connect(handler)
def slot_slice_blocks(self) -> None:
def executer(origin, normal) -> None:
slices = self.viewer.slice_blocks(origin, normal)
self.add_block_slices(slices)
def handler(description: dict) -> None:
self.handle_slices(description, executer)
# Disconnect
self.viewer.set_normal_controller()
self.viewer.signal_slice_description.disconnect()
self.viewer.set_slice_controller()
self.viewer.signal_slice_description.connect(handler)
def slot_slice_points(self) -> None:
def executer(origin, normal) -> None:
slices = self.viewer.slice_points(origin, normal)
self.add_point_slices(slices)
def handler(description: dict) -> None:
self.handle_slices(description, executer)
# Disconnect
self.viewer.set_normal_controller()
self.viewer.signal_slice_description.disconnect()
self.viewer.set_slice_controller()
self.viewer.signal_slice_description.connect(handler)
def add_mesh_slices(self, slice_list: list) -> None:
def add_slice(description: dict) -> None:
slices = description.get('vertices')
mesh_id = description.get('element_id')
mesh = self.viewer.get_drawable(mesh_id)
def add_subslice(subslice, num: int) -> None:
self.viewer.lines(vertices=subslice,
color=mesh.color,
name=f'MESHSLICE_{num}_{mesh.name}',
extension='csv',
loop=True)
# Execute add_subslice for all subslices of the slice
for i, ssl in enumerate(slices):
add_subslice(ssl, i)
# Execute add_slice over all slice descriptions
for sl in slice_list:
add_slice(sl)
def add_block_slices(self, slice_list: list) -> None:
def add_slice(description: dict) -> None:
indices = description.get('indices')
block_id = description.get('element_id')
block = self.viewer.get_drawable(block_id)
if block.is_slice:
return
self.viewer.blocks(vertices=block.vertices[indices],
values=block.values[indices],
color=block.color[indices],
vmin=block.vmin,
vmax=block.vmax,
colormap=block.colormap,
block_size=block.block_size,
name=f'BLOCKSLICE_{block.name}',
extension='csv',
is_slice=True)
# Execute add_slice over all slice descriptions
for sl in slice_list:
add_slice(sl)
def add_point_slices(self, slice_list: list) -> None:
def add_slice(description: dict) -> None:
indices = description.get('indices')
point_id = description.get('element_id')
point = self.viewer.get_drawable(point_id)
if point.is_slice:
return
self.viewer.points(vertices=point.vertices[indices],
values=point.values[indices],
color=point.color[indices],
vmin=point.vmin,
vmax=point.vmax,
colormap=point.colormap,
point_size=point.point_size,
name=f'POINTSLICE_{point.name}',
extension='csv',
is_slice=True)
# Execute add_slice over all slice descriptions
for sl in slice_list:
add_slice(sl)
"""
Common functionality for loading
"""
@staticmethod
def _thread_runner(method: callable, *args, **kwargs) -> None:
worker = ThreadWorker(method, *args, **kwargs)
QThreadPool.globalInstance().start(worker)
def _dialog_load_element(self, loader: classmethod, hint: str, *args, **kwargs) -> None:
(paths, selected_filter) = QFileDialog.getOpenFileNames(
parent=self,
directory=self.last_dir,
filter=self.filters_dict.get(hint).get('load'))
# If path == '', then bool(path) is False
path_list = sorted(filter(bool, paths))
if len(path_list) > 0:
self.statusBar.showMessage(f'Loading {len(path_list)} element(s)...')
self._thread_runner(self.viewer.load_multiple, path_list, loader, *args, **kwargs)
self.last_dir = QFileInfo(path_list[-1]).absoluteDir().absolutePath()
def _dialog_load_folder(self, loader: classmethod, *args, **kwargs) -> None:
path = QFileDialog.getExistingDirectory(
parent=self,
directory=self.last_dir,
options=QFileDialog.ShowDirsOnly)
# Execute method
if bool(path):
self.statusBar.showMessage('Loading folder...')
self._thread_runner(loader, path, *args, **kwargs)
self.last_dir = path
"""
Slots for progress updates
"""
def slot_process_updated(self, value: int) -> None:
self.progress_bar.setValue(value)
def slot_process_started(self) -> None:
self.progress_bar.setValue(0)
self.progress_bar.show()
def slot_process_finished(self,) -> None:
self.progress_bar.hide()
"""
Slot for extra items in view
"""
def slot_screenshot(self) -> None:
(path, selected_filter) = QFileDialog.getSaveFileName(
parent=self.viewer,
directory=f'BlastSight Screenshot ({datetime.now().strftime("%Y%m%d-%H%M%S")})',
filter='PNG image (*.png);;')
self.viewer.take_screenshot(path)
"""
Slots for loading files
"""
def dialog_load_mesh(self) -> None:
self._dialog_load_element(loader=self.viewer.load_mesh, hint='mesh')
def dialog_load_blocks(self) -> None:
self._dialog_load_element(loader=self.viewer.load_blocks, hint='block')
def dialog_load_points(self) -> None:
self._dialog_load_element(loader=self.viewer.load_points, hint='point')
def dialog_load_lines(self) -> None:
self._dialog_load_element(loader=self.viewer.load_lines, hint='line')
def dialog_load_tubes(self) -> None:
self._dialog_load_element(loader=self.viewer.load_tubes, hint='tube')
def dialog_load_mesh_folder(self) -> None:
self._dialog_load_folder(loader=self.viewer.load_mesh_folder)
def dialog_load_blocks_folder(self) -> None:
self._dialog_load_folder(loader=self.viewer.load_blocks_folder)
def dialog_load_points_folder(self) -> None:
self._dialog_load_folder(loader=self.viewer.load_points_folder)
def dialog_load_lines_folder(self) -> None:
self._dialog_load_folder(loader=self.viewer.load_lines_folder)
def dialog_load_tubes_folder(self) -> None:
self._dialog_load_folder(loader=self.viewer.load_tubes_folder)
"""
Slots for exporting elements
"""
def _dialog_export_element(self, _id: int) -> None:
element = self.viewer.get_drawable(_id).element
proposed_path = QDir(self.last_dir).filePath(element.name)
# TODO Check hints by element type
filters = 'BlastSight Mesh (*.h5m);;'\
'BlastSight Blocks/Points (*.h5p);;'
(path, selected_filter) = QFileDialog.getSaveFileName(
parent=self,
directory=proposed_path,
filter=filters)
# Execute method
if bool(path):
self.statusBar.showMessage('Exporting...')
self._thread_runner(self.viewer.export_element, path, _id)
"""
Slots for modifying interaction controllers
"""
def slot_normal_controller(self) -> None:
self.viewer.set_normal_controller()
def slot_detection_controller(self) -> None:
self.viewer.set_detection_controller()
def slot_measurement_controller(self) -> None:
self.viewer.set_measurement_controller()
"""
Slots for showing help/about dialogs
"""
def slot_help(self) -> None:
HelpDialog(self).exec_()
def slot_about(self) -> None:
AboutDialog(self).exec_()
"""
Events pass-through
"""
def dragEnterEvent(self, event, *args, **kwargs) -> None:
self.viewer.dragEnterEvent(event, *args, **kwargs)
def dropEvent(self, event, *args, **kwargs) -> None:
self.viewer.dropEvent(event, *args, **kwargs)
