import argparse
import functools
import os.path
import subprocess
import sys
from qtpy import QT_VERSION
from qtpy import QtCore
from qtpy.QtCore import Qt
from qtpy import QtGui
from qtpy import QtWidgets
QT5 = QT_VERSION[0] == '5'
from labelme.canvas import Canvas
from labelme.colorDialog import ColorDialog
from labelme.labelDialog import LabelDialog
from labelme.labelFile import LabelFile
from labelme.labelFile import LabelFileError
from labelme.lib import addActions
from labelme.lib import fmtShortcut
from labelme.lib import newAction
from labelme.lib import newIcon
from labelme.lib import struct
from labelme.shape import DEFAULT_FILL_COLOR
from labelme.shape import DEFAULT_LINE_COLOR
from labelme.shape import Shape
from labelme.toolBar import ToolBar
from labelme.zoomWidget import ZoomWidget
__appname__ = 'labelme'
# FIXME
# - [medium] Set max zoom value to something big enough for FitWidth/Window
# TODO(unknown):
# - [high] Automatically add file suffix when saving.
# - [high] Add polygon movement with arrow keys
# - [high] Deselect shape when clicking and already selected(?)
# - [high] Sanitize shortcuts between beginner/advanced mode.
# - [medium] Zoom should keep the image centered.
# - [medium] Add undo button for vertex addition.
# - [low,maybe] Open images with drag & drop.
# - [low,maybe] Preview images on file dialogs.
# - [low,maybe] Sortable label list.
# - Zoom is too "steppy".
# Utility functions and classes.
class WindowMixin(object):
def menu(self, title, actions=None):
menu = self.menuBar().addMenu(title)
if actions:
addActions(menu, actions)
return menu
def toolbar(self, title, actions=None):
toolbar = ToolBar(title)
toolbar.setObjectName('%sToolBar' % title)
# toolbar.setOrientation(Qt.Vertical)
toolbar.setToolButtonStyle(Qt.ToolButtonTextUnderIcon)
if actions:
addActions(toolbar, actions)
self.addToolBar(Qt.LeftToolBarArea, toolbar)
return toolbar
class EscapableQListWidget(QtWidgets.QListWidget):
def keyPressEvent(self, event):
if event.key() == Qt.Key_Escape:
self.clearSelection()
class LabelQListWidget(QtWidgets.QListWidget):
def __init__(self, *args, **kwargs):
super(LabelQListWidget, self).__init__(*args, **kwargs)
self.canvas = None
self.itemsToShapes = []
def get_shape_from_item(self, item):
for index, (item_, shape) in enumerate(self.itemsToShapes):
if item_ is item:
return shape
def get_item_from_shape(self, shape):
for index, (item, shape_) in enumerate(self.itemsToShapes):
if shape_ is shape:
return item
def clear(self):
super(LabelQListWidget, self).clear()
self.itemsToShapes = []
def setParent(self, parent):
self.parent = parent
def dropEvent(self, event):
shapes = self.shapes
super(LabelQListWidget, self).dropEvent(event)
if self.shapes == shapes:
return
if self.canvas is None:
raise RuntimeError('self.canvas must be set beforehand.')
self.parent.setDirty()
self.canvas.shapes = self.shapes
@property
def shapes(self):
shapes = []
for i in range(self.count()):
item = self.item(i)
shape = self.get_shape_from_item(item)
shapes.append(shape)
return shapes
class MainWindow(QtWidgets.QMainWindow, WindowMixin):
FIT_WINDOW, FIT_WIDTH, MANUAL_ZOOM = 0, 1, 2
def __init__(self, filename=None, output=None, store_data=True,
labels=None, sort_labels=True):
super(MainWindow, self).__init__()
self.setWindowTitle(__appname__)
# Whether we need to save or not.
self.dirty = False
self._noSelectionSlot = False
self._beginner = True
self.screencastViewer = "firefox"
self.screencast = "screencast.ogv"
# Main widgets and related state.
self.labelDialog = LabelDialog(parent=self, labels=labels,
sort_labels=sort_labels)
self.labelList = LabelQListWidget()
self.lastOpenDir = None
self.labelList.itemActivated.connect(self.labelSelectionChanged)
self.labelList.itemSelectionChanged.connect(self.labelSelectionChanged)
self.labelList.itemDoubleClicked.connect(self.editLabel)
# Connect to itemChanged to detect checkbox changes.
self.labelList.itemChanged.connect(self.labelItemChanged)
self.labelList.setDragDropMode(
QtWidgets.QAbstractItemView.InternalMove)
self.labelList.setParent(self)
listLayout = QtWidgets.QVBoxLayout()
listLayout.setContentsMargins(0, 0, 0, 0)
self.editButton = QtWidgets.QToolButton()
self.editButton.setToolButtonStyle(Qt.ToolButtonTextBesideIcon)
listLayout.addWidget(self.editButton) # 0, Qt.AlignCenter)
listLayout.addWidget(self.labelList)
self.labelListContainer = QtWidgets.QWidget()
self.labelListContainer.setLayout(listLayout)
self.uniqLabelList = EscapableQListWidget()
self.uniqLabelList.setToolTip(
"Select label to start annotating for it. "
"Press 'Esc' to deselect.")
if labels:
self.uniqLabelList.addItems(labels)
self.uniqLabelList.sortItems()
self.labelsdock = QtWidgets.QDockWidget(u'Label List', self)
self.labelsdock.setObjectName(u'Label List')
self.labelsdock.setWidget(self.uniqLabelList)
self.dock = QtWidgets.QDockWidget('Polygon Labels', self)
self.dock.setObjectName('Labels')
self.dock.setWidget(self.labelListContainer)
self.fileListWidget = QtWidgets.QListWidget()
self.fileListWidget.itemSelectionChanged.connect(
self.fileSelectionChanged)
filelistLayout = QtWidgets.QVBoxLayout()
filelistLayout.setContentsMargins(0, 0, 0, 0)
filelistLayout.addWidget(self.fileListWidget)
fileListContainer = QtWidgets.QWidget()
fileListContainer.setLayout(filelistLayout)
self.filedock = QtWidgets.QDockWidget(u'File List', self)
self.filedock.setObjectName(u'Files')
self.filedock.setWidget(fileListContainer)
self.zoomWidget = ZoomWidget()
self.colorDialog = ColorDialog(parent=self)
self.canvas = self.labelList.canvas = Canvas()
self.canvas.zoomRequest.connect(self.zoomRequest)
scrollArea = QtWidgets.QScrollArea()
scrollArea.setWidget(self.canvas)
scrollArea.setWidgetResizable(True)
self.scrollBars = {
Qt.Vertical: scrollArea.verticalScrollBar(),
Qt.Horizontal: scrollArea.horizontalScrollBar(),
}
self.canvas.scrollRequest.connect(self.scrollRequest)
self.canvas.newShape.connect(self.newShape)
self.canvas.shapeMoved.connect(self.setDirty)
self.canvas.selectionChanged.connect(self.shapeSelectionChanged)
self.canvas.drawingPolygon.connect(self.toggleDrawingSensitive)
self.setCentralWidget(scrollArea)
self.addDockWidget(Qt.RightDockWidgetArea, self.labelsdock)
self.addDockWidget(Qt.RightDockWidgetArea, self.dock)
self.addDockWidget(Qt.RightDockWidgetArea, self.filedock)
self.filedock.setFeatures(QtWidgets.QDockWidget.DockWidgetFloatable)
self.dockFeatures = (QtWidgets.QDockWidget.DockWidgetClosable |
QtWidgets.QDockWidget.DockWidgetFloatable)
self.dock.setFeatures(self.dock.features() ^ self.dockFeatures)
# Actions
action = functools.partial(newAction, self)
quit = action('&Quit', self.close, 'Ctrl+Q', 'quit',
'Quit application')
open = action('&Open', self.openFile, 'Ctrl+O', 'open',
'Open image or label file')
opendir = action('&Open Dir', self.openDirDialog, 'Ctrl+u', 'open',
u'Open Dir')
openNextImg = action('&Next Image', self.openNextImg, 'd', 'next',
u'Open Next')
openPrevImg = action('&Prev Image', self.openPrevImg, 'a', 'prev',
u'Open Prev')
save = action('&Save', self.saveFile, 'Ctrl+S', 'save',
'Save labels to file', enabled=False)
saveAs = action('&Save As', self.saveFileAs, 'Ctrl+Shift+S', 'save-as',
'Save labels to a different file', enabled=False)
close = action('&Close', self.closeFile, 'Ctrl+W', 'close',
'Close current file')
color1 = action('Polygon &Line Color', self.chooseColor1, 'Ctrl+L',
'color_line', 'Choose polygon line color')
color2 = action('Polygon &Fill Color', self.chooseColor2,
'Ctrl+Shift+L', 'color', 'Choose polygon fill color')
createMode = action('Create\nPolygo&ns', self.setCreateMode, 'Ctrl+N',
'objects', 'Start drawing polygons', enabled=False)
editMode = action('&Edit\nPolygons', self.setEditMode, 'Ctrl+J',
'edit', 'Move and edit polygons', enabled=False)
create = action('Create\nPolygo&n', self.createShape, 'Ctrl+N',
'objects', 'Draw a new polygon', enabled=False)
delete = action('Delete\nPolygon', self.deleteSelectedShape, 'Delete',
'cancel', 'Delete', enabled=False)
copy = action('&Duplicate\nPolygon', self.copySelectedShape, 'Ctrl+D',
'copy', 'Create a duplicate of the selected polygon',
enabled=False)
undoLastPoint = action('Undo last point', self.canvas.undoLastPoint,
['Ctrl+Z', 'Backspace'], 'undoLastPoint',
'Undo last drawn point', enabled=False)
advancedMode = action('&Advanced Mode', self.toggleAdvancedMode,
'Ctrl+Shift+A', 'expert',
'Switch to advanced mode', checkable=True)
hideAll = action('&Hide\nPolygons',
functools.partial(self.togglePolygons, False),
'Ctrl+H', 'eye', 'Hide all polygons', enabled=False)
showAll = action('&Show\nPolygons',
functools.partial(self.togglePolygons, True),
'Ctrl+A', 'eye', 'Show all polygons', enabled=False)
help = action('&Tutorial', self.tutorial, 'Ctrl+T', 'help',
'Show screencast of introductory tutorial')
zoom = QtWidgets.QWidgetAction(self)
zoom.setDefaultWidget(self.zoomWidget)
self.zoomWidget.setWhatsThis(
"Zoom in or out of the image. Also accessible with"
" %s and %s from the canvas." %
(fmtShortcut("Ctrl+[-+]"), fmtShortcut("Ctrl+Wheel")))
self.zoomWidget.setEnabled(False)
zoomIn = action('Zoom &In', functools.partial(self.addZoom, 10),
QtGui.QKeySequence.ZoomIn, 'zoom-in',
'Increase zoom level', enabled=False)
zoomOut = action('&Zoom Out', functools.partial(self.addZoom, -10),
QtGui.QKeySequence.ZoomOut, 'zoom-out',
'Decrease zoom level', enabled=False)
zoomOrg = action('&Original size',
functools.partial(self.setZoom, 100),
'Ctrl+0', 'zoom', 'Zoom to original size',
enabled=False)
fitWindow = action('&Fit Window', self.setFitWindow, 'Ctrl+F',
'fit-window', 'Zoom follows window size',
checkable=True, enabled=False)
fitWidth = action('Fit &Width', self.setFitWidth, 'Ctrl+Shift+F',
'fit-width', 'Zoom follows window width',
checkable=True, enabled=False)
# Group zoom controls into a list for easier toggling.
zoomActions = (self.zoomWidget, zoomIn, zoomOut, zoomOrg,
fitWindow, fitWidth)
self.zoomMode = self.MANUAL_ZOOM
self.scalers = {
self.FIT_WINDOW: self.scaleFitWindow,
self.FIT_WIDTH: self.scaleFitWidth,
# Set to one to scale to 100% when loading files.
self.MANUAL_ZOOM: lambda: 1,
}
edit = action('&Edit Label', self.editLabel, 'Ctrl+E', 'edit',
'Modify the label of the selected polygon',
enabled=False)
self.editButton.setDefaultAction(edit)
shapeLineColor = action(
'Shape &Line Color', self.chshapeLineColor, icon='color-line',
tip='Change the line color for this specific shape', enabled=False)
shapeFillColor = action(
'Shape &Fill Color', self.chshapeFillColor, icon='color',
tip='Change the fill color for this specific shape', enabled=False)
labels = self.dock.toggleViewAction()
labels.setText('Show/Hide Label Panel')
labels.setShortcut('Ctrl+Shift+L')
# Lavel list context menu.
labelMenu = QtWidgets.QMenu()
addActions(labelMenu, (edit, delete))
self.labelList.setContextMenuPolicy(Qt.CustomContextMenu)
self.labelList.customContextMenuRequested.connect(
self.popLabelListMenu)
# Store actions for further handling.
self.actions = struct(
save=save, saveAs=saveAs, open=open, close=close,
lineColor=color1, fillColor=color2,
create=create, delete=delete, edit=edit, copy=copy,
undoLastPoint=undoLastPoint,
createMode=createMode, editMode=editMode,
advancedMode=advancedMode,
shapeLineColor=shapeLineColor, shapeFillColor=shapeFillColor,
zoom=zoom, zoomIn=zoomIn, zoomOut=zoomOut, zoomOrg=zoomOrg,
fitWindow=fitWindow, fitWidth=fitWidth,
zoomActions=zoomActions,
fileMenuActions=(open, opendir, save, saveAs, close, quit),
beginner=(), advanced=(),
editMenu=(edit, copy, delete, None, undoLastPoint,
None, color1, color2),
beginnerContext=(create, edit, copy, delete, undoLastPoint),
advancedContext=(
createMode, editMode, edit, copy,
delete, shapeLineColor, shapeFillColor,
undoLastPoint,
),
onLoadActive=(close, create, createMode, editMode),
onShapesPresent=(saveAs, hideAll, showAll),
)
self.menus = struct(
file=self.menu('&File'),
edit=self.menu('&Edit'),
view=self.menu('&View'),
help=self.menu('&Help'),
recentFiles=QtWidgets.QMenu('Open &Recent'),
labelList=labelMenu,
)
addActions(self.menus.file, (open, opendir, self.menus.recentFiles,
save, saveAs, close, None, quit))
addActions(self.menus.help, (help,))
addActions(self.menus.view, (
labels, advancedMode, None,
hideAll, showAll, None,
zoomIn, zoomOut, zoomOrg, None,
fitWindow, fitWidth))
self.menus.file.aboutToShow.connect(self.updateFileMenu)
# Custom context menu for the canvas widget:
addActions(self.canvas.menus[0], self.actions.beginnerContext)
addActions(self.canvas.menus[1], (
action('&Copy here', self.copyShape),
action('&Move here', self.moveShape)))
self.tools = self.toolbar('Tools')
self.actions.beginner = (
open, opendir, openNextImg, openPrevImg, save,
None, create, copy, delete, None,
zoomIn, zoom, zoomOut, fitWindow, fitWidth)
self.actions.advanced = (
open, opendir, openNextImg, openPrevImg, save, None,
createMode, editMode, None,
hideAll, showAll)
self.statusBar().showMessage('%s started.' % __appname__)
self.statusBar().show()
# Application state.
self.image = QtGui.QImage()
self.imagePath = None
self.labeling_once = output is not None
self.output = output
self._store_data = store_data
self.recentFiles = []
self.maxRecent = 7
self.lineColor = None
self.fillColor = None
self.zoom_level = 100
self.fit_window = False
if filename is not None and os.path.isdir(filename):
self.importDirImages(filename)
else:
self.filename = filename
# XXX: Could be completely declarative.
# Restore application settings.
self.settings = QtCore.QSettings('labelme', 'labelme')
self.recentFiles = self.settings.value('recentFiles', [])
size = self.settings.value('window/size', QtCore.QSize(600, 500))
position = self.settings.value('window/position', QtCore.QPoint(0, 0))
self.resize(size)
self.move(position)
# or simply:
# self.restoreGeometry(settings['window/geometry']
self.restoreState(
self.settings.value('window/state', QtCore.QByteArray()))
self.lineColor = QtGui.QColor(
self.settings.value('line/color', Shape.line_color))
self.fillColor = QtGui.QColor(
self.settings.value('fill/color', Shape.fill_color))
Shape.line_color = self.lineColor
Shape.fill_color = self.fillColor
if self.settings.value('advanced', False):
self.actions.advancedMode.setChecked(True)
self.toggleAdvancedMode()
# Populate the File menu dynamically.
self.updateFileMenu()
# Since loading the file may take some time,
# make sure it runs in the background.
if self.filename is not None:
self.queueEvent(functools.partial(self.loadFile, self.filename))
# Callbacks:
self.zoomWidget.valueChanged.connect(self.paintCanvas)
self.populateModeActions()
# self.firstStart = True
# if self.firstStart:
# QWhatsThis.enterWhatsThisMode()
# Support Functions
def noShapes(self):
return not self.labelList.itemsToShapes
def toggleAdvancedMode(self, value=True):
self._beginner = not value
self.canvas.setEditing(True)
self.populateModeActions()
self.editButton.setVisible(not value)
if value:
self.actions.createMode.setEnabled(True)
self.actions.editMode.setEnabled(False)
self.dock.setFeatures(self.dock.features() | self.dockFeatures)
else:
self.dock.setFeatures(self.dock.features() ^ self.dockFeatures)
def populateModeActions(self):
if self.beginner():
tool, menu = self.actions.beginner, self.actions.beginnerContext
else:
tool, menu = self.actions.advanced, self.actions.advancedContext
self.tools.clear()
addActions(self.tools, tool)
self.canvas.menus[0].clear()
addActions(self.canvas.menus[0], menu)
self.menus.edit.clear()
actions = (self.actions.create,) if self.beginner() else \
(self.actions.createMode, self.actions.editMode)
addActions(self.menus.edit, actions + self.actions.editMenu)
def setBeginner(self):
self.tools.clear()
addActions(self.tools, self.actions.beginner)
def setAdvanced(self):
self.tools.clear()
addActions(self.tools, self.actions.advanced)
def setDirty(self):
self.dirty = True
self.actions.save.setEnabled(True)
title = __appname__
if self.filename is not None:
title = '{} - {}*'.format(title, self.filename)
self.setWindowTitle(title)
def setClean(self):
self.dirty = False
self.actions.save.setEnabled(False)
self.actions.create.setEnabled(True)
title = __appname__
if self.filename is not None:
title = '{} - {}'.format(title, self.filename)
self.setWindowTitle(title)
def toggleActions(self, value=True):
"""Enable/Disable widgets which depend on an opened image."""
for z in self.actions.zoomActions:
z.setEnabled(value)
for action in self.actions.onLoadActive:
action.setEnabled(value)
def queueEvent(self, function):
QtCore.QTimer.singleShot(0, function)
def status(self, message, delay=5000):
self.statusBar().showMessage(message, delay)
def resetState(self):
self.labelList.clear()
self.filename = None
self.imageData = None
self.labelFile = None
self.canvas.resetState()
def currentItem(self):
items = self.labelList.selectedItems()
if items:
return items[0]
return None
def addRecentFile(self, filename):
if filename in self.recentFiles:
self.recentFiles.remove(filename)
elif len(self.recentFiles) >= self.maxRecent:
self.recentFiles.pop()
self.recentFiles.insert(0, filename)
def beginner(self):
return self._beginner
def advanced(self):
return not self.beginner()
# Callbacks
def tutorial(self):
subprocess.Popen([self.screencastViewer, self.screencast])
def createShape(self):
assert self.beginner()
self.canvas.setEditing(False)
self.actions.create.setEnabled(False)
def toggleDrawingSensitive(self, drawing=True):
"""Toggle drawing sensitive.
In the middle of drawing, toggling between modes should be disabled.
"""
self.actions.editMode.setEnabled(not drawing)
self.actions.undoLastPoint.setEnabled(drawing)
if not drawing and self.beginner():
# Cancel creation.
self.canvas.setEditing(True)
self.canvas.restoreCursor()
self.actions.create.setEnabled(True)
def toggleDrawMode(self, edit=True):
self.canvas.setEditing(edit)
self.actions.createMode.setEnabled(edit)
self.actions.editMode.setEnabled(not edit)
def setCreateMode(self):
assert self.advanced()
self.toggleDrawMode(False)
def setEditMode(self):
assert self.advanced()
self.toggleDrawMode(True)
def updateFileMenu(self):
current = self.filename
def exists(filename):
return os.path.exists(str(filename))
menu = self.menus.recentFiles
menu.clear()
files = [f for f in self.recentFiles if f != current and exists(f)]
for i, f in enumerate(files):
icon = newIcon('labels')
action = QtWidgets.QAction(
icon, '&%d %s' % (i + 1, QtCore.QFileInfo(f).fileName()), self)
action.triggered.connect(functools.partial(self.loadRecent, f))
menu.addAction(action)
def popLabelListMenu(self, point):
self.menus.labelList.exec_(self.labelList.mapToGlobal(point))
def editLabel(self, item=None):
if not self.canvas.editing():
return
item = item if item else self.currentItem()
text = self.labelDialog.popUp(item.text())
if text is None:
return
item.setText(text)
self.setDirty()
if not self.uniqLabelList.findItems(text, Qt.MatchExactly):
self.uniqLabelList.addItem(text)
self.uniqLabelList.sortItems()
def fileSelectionChanged(self):
items = self.fileListWidget.selectedItems()
if not items:
return
item = items[0]
if not self.mayContinue():
return
currIndex = self.imageList.index(str(item.text()))
if currIndex < len(self.imageList):
filename = self.imageList[currIndex]
if filename:
self.loadFile(filename)
# React to canvas signals.
def shapeSelectionChanged(self, selected=False):
if self._noSelectionSlot:
self._noSelectionSlot = False
else:
shape = self.canvas.selectedShape
if shape:
item = self.labelList.get_item_from_shape(shape)
item.setSelected(True)
else:
self.labelList.clearSelection()
self.actions.delete.setEnabled(selected)
self.actions.copy.setEnabled(selected)
self.actions.edit.setEnabled(selected)
self.actions.shapeLineColor.setEnabled(selected)
self.actions.shapeFillColor.setEnabled(selected)
def addLabel(self, shape):
item = QtWidgets.QListWidgetItem(shape.label)
item.setFlags(item.flags() | Qt.ItemIsUserCheckable)
item.setCheckState(Qt.Checked)
self.labelList.itemsToShapes.append((item, shape))
self.labelList.addItem(item)
if not self.uniqLabelList.findItems(shape.label, Qt.MatchExactly):
self.uniqLabelList.addItem(shape.label)
self.uniqLabelList.sortItems()
self.labelDialog.addLabelHistory(item.text())
for action in self.actions.onShapesPresent:
action.setEnabled(True)
def remLabel(self, shape):
item = self.labelList.get_item_from_shape(shape)
self.labelList.takeItem(self.labelList.row(item))
def loadLabels(self, shapes):
s = []
for label, points, line_color, fill_color in shapes:
shape = Shape(label=label)
for x, y in points:
shape.addPoint(QtCore.QPointF(x, y))
shape.close()
s.append(shape)
self.addLabel(shape)
if line_color:
shape.line_color = QtGui.QColor(*line_color)
if fill_color:
shape.fill_color = QtGui.QColor(*fill_color)
self.canvas.loadShapes(s)
def saveLabels(self, filename):
lf = LabelFile()
def format_shape(s):
return dict(label=str(s.label),
line_color=s.line_color.getRgb()
if s.line_color != self.lineColor else None,
fill_color=s.fill_color.getRgb()
if s.fill_color != self.fillColor else None,
points=[(p.x(), p.y()) for p in s.points])
shapes = [format_shape(shape) for shape in self.labelList.shapes]
try:
imagePath = os.path.relpath(
self.imagePath, os.path.dirname(filename))
imageData = self.imageData if self._store_data else None
lf.save(filename, shapes, imagePath, imageData,
self.lineColor.getRgb(), self.fillColor.getRgb())
self.labelFile = lf
# disable allows next and previous image to proceed
# self.filename = filename
return True
except LabelFileError as e:
self.errorMessage('Error saving label data', '<b>%s</b>' % e)
return False
def copySelectedShape(self):
self.addLabel(self.canvas.copySelectedShape())
# fix copy and delete
self.shapeSelectionChanged(True)
def labelSelectionChanged(self):
item = self.currentItem()
if item and self.canvas.editing():
self._noSelectionSlot = True
shape = self.labelList.get_shape_from_item(item)
self.canvas.selectShape(shape)
def labelItemChanged(self, item):
shape = self.labelList.get_shape_from_item(item)
label = str(item.text())
if label != shape.label:
shape.label = str(item.text())
self.setDirty()
else: # User probably changed item visibility
self.canvas.setShapeVisible(shape, item.checkState() == Qt.Checked)
# Callback functions:
def newShape(self):
"""Pop-up and give focus to the label editor.
position MUST be in global coordinates.
"""
items = self.uniqLabelList.selectedItems()
text = None
if items:
text = items[0].text()
text = self.labelDialog.popUp(text)
if text is not None:
self.addLabel(self.canvas.setLastLabel(text))
if self.beginner(): # Switch to edit mode.
self.canvas.setEditing(True)
self.actions.create.setEnabled(True)
else:
self.actions.editMode.setEnabled(True)
self.setDirty()
else:
self.canvas.undoLastLine()
def scrollRequest(self, delta, orientation):
units = - delta * 0.1 # natural scroll
bar = self.scrollBars[orientation]
bar.setValue(bar.value() + bar.singleStep() * units)
def setZoom(self, value):
self.actions.fitWidth.setChecked(False)
self.actions.fitWindow.setChecked(False)
self.zoomMode = self.MANUAL_ZOOM
self.zoomWidget.setValue(value)
def addZoom(self, increment=10):
self.setZoom(self.zoomWidget.value() + increment)
def zoomRequest(self, delta, pos):
canvas_width_old = self.canvas.width()
units = delta * 0.1
self.addZoom(units)
canvas_width_new = self.canvas.width()
if canvas_width_old != canvas_width_new:
canvas_scale_factor = canvas_width_new / canvas_width_old
x_shift = round(pos.x() * canvas_scale_factor) - pos.x()
y_shift = round(pos.y() * canvas_scale_factor) - pos.y()
self.scrollBars[Qt.Horizontal].setValue(
self.scrollBars[Qt.Horizontal].value() + x_shift)
self.scrollBars[Qt.Vertical].setValue(
self.scrollBars[Qt.Vertical].value() + y_shift)
def setFitWindow(self, value=True):
if value:
self.actions.fitWidth.setChecked(False)
self.zoomMode = self.FIT_WINDOW if value else self.MANUAL_ZOOM
self.adjustScale()
def setFitWidth(self, value=True):
if value:
self.actions.fitWindow.setChecked(False)
self.zoomMode = self.FIT_WIDTH if value else self.MANUAL_ZOOM
self.adjustScale()
def togglePolygons(self, value):
for item, shape in self.labelList.itemsToShapes:
item.setCheckState(Qt.Checked if value else Qt.Unchecked)
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.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)
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)))
if filename in self.imageList:
self.fileListWidget.setCurrentRow(self.imageList.index(filename))
return True
def resizeEvent(self, event):
if self.canvas and not self.image.isNull()\
and self.zoomMode != self.MANUAL_ZOOM:
self.adjustScale()
super(MainWindow, self).resizeEvent(event)
def paintCanvas(self):
assert not self.image.isNull(), "cannot paint null image"
self.canvas.scale = 0.01 * self.zoomWidget.value()
self.canvas.adjustSize()
self.canvas.update()
def adjustScale(self, initial=False):
value = self.scalers[self.FIT_WINDOW if initial else self.zoomMode]()
self.zoomWidget.setValue(int(100 * value))
def scaleFitWindow(self):
"""Figure out the size of the pixmap to fit the main widget."""
e = 2.0 # So that no scrollbars are generated.
w1 = self.centralWidget().width() - e
h1 = self.centralWidget().height() - e
a1 = w1 / h1
# Calculate a new scale value based on the pixmap's aspect ratio.
w2 = self.canvas.pixmap.width() - 0.0
h2 = self.canvas.pixmap.height() - 0.0
a2 = w2 / h2
return w1 / w2 if a2 >= a1 else h1 / h2
def scaleFitWidth(self):
# The epsilon does not seem to work too well here.
w = self.centralWidget().width() - 2.0
return w / self.canvas.pixmap.width()
def closeEvent(self, event):
if not self.mayContinue():
event.ignore()
s = self.settings
self.settings.setValue(
'filename', self.filename if self.filename else '')
self.settings.setValue('window/size', self.size())
self.settings.setValue('window/position', self.pos())
self.settings.setValue('window/state', self.saveState())
self.settings.setValue('line/color', self.lineColor)
self.settings.setValue('fill/color', self.fillColor)
self.settings.setValue('recentFiles', self.recentFiles)
self.settings.setValue('advanced', not self._beginner)
# ask the use for where to save the labels
# self.settings.setValue('window/geometry', self.saveGeometry())
# User Dialogs #
def loadRecent(self, filename):
if self.mayContinue():
self.loadFile(filename)
def openPrevImg(self, _value=False):
if not self.mayContinue():
return
if len(self.imageList) <= 0:
return
if self.filename is None:
return
currIndex = self.imageList.index(self.filename)
if currIndex - 1 >= 0:
filename = self.imageList[currIndex - 1]
if filename:
self.loadFile(filename)
def openNextImg(self, _value=False):
if not self.mayContinue():
return
if len(self.imageList) <= 0:
return
filename = None
if self.filename is None:
filename = self.imageList[0]
else:
currIndex = self.imageList.index(self.filename)
if currIndex + 1 < len(self.imageList):
filename = self.imageList[currIndex + 1]
if filename:
self.loadFile(filename)
def openFile(self, _value=False):
if not self.mayContinue():
return
path = os.path.dirname(str(self.filename)) if self.filename else '.'
formats = ['*.{}'.format(fmt.data().decode())
for fmt in QtGui.QImageReader.supportedImageFormats()]
filters = "Image & Label files (%s)" % ' '.join(
formats + ['*%s' % LabelFile.suffix])
filename = QtWidgets.QFileDialog.getOpenFileName(
self, '%s - Choose Image or Label file' % __appname__,
path, filters)
if QT5:
filename, _ = filename
filename = str(filename)
if filename:
self.loadFile(filename)
def saveFile(self, _value=False):
assert not self.image.isNull(), "cannot save empty image"
if self.hasLabels():
if self.labelFile:
# DL20180323 - overwrite when in directory
self._saveFile(self.labelFile.filename)
elif self.output:
self._saveFile(self.output)
else:
self._saveFile(self.saveFileDialog())
def saveFileAs(self, _value=False):
assert not self.image.isNull(), "cannot save empty image"
if self.hasLabels():
self._saveFile(self.saveFileDialog())
def saveFileDialog(self):
caption = '%s - Choose File' % __appname__
filters = 'Label files (*%s)' % LabelFile.suffix
dlg = QtWidgets.QFileDialog(self, caption, self.currentPath(), filters)
dlg.setDefaultSuffix(LabelFile.suffix[1:])
dlg.setAcceptMode(QtWidgets.QFileDialog.AcceptSave)
dlg.setOption(QtWidgets.QFileDialog.DontConfirmOverwrite, False)
dlg.setOption(QtWidgets.QFileDialog.DontUseNativeDialog, False)
basename = os.path.splitext(self.filename)[0]
default_labelfile_name = os.path.join(
self.currentPath(), basename + LabelFile.suffix)
filename = dlg.getSaveFileName(
self, 'Choose File', default_labelfile_name,
'Label files (*%s)' % LabelFile.suffix)
if QT5:
filename, _ = filename
filename = str(filename)
return filename
def _saveFile(self, filename):
if filename and self.saveLabels(filename):
self.addRecentFile(filename)
self.setClean()
if self.labeling_once:
self.close()
def closeFile(self, _value=False):
if not self.mayContinue():
return
self.resetState()
self.setClean()
self.toggleActions(False)
self.canvas.setEnabled(False)
self.actions.saveAs.setEnabled(False)
# Message Dialogs. #
def hasLabels(self):
if not self.labelList.itemsToShapes:
self.errorMessage(
'No objects labeled',
'You must label at least one object to save the file.')
return False
return True
def mayContinue(self):
if not self.dirty:
return True
mb = QtWidgets.QMessageBox
msg = 'Save annotations to "{}" before closing?'.format(self.filename)
answer = mb.question(self,
'Save annotations?',
msg,
mb.Save | mb.Discard | mb.Cancel,
mb.Save)
if answer == mb.Discard:
return True
elif answer == mb.Save:
self.saveFile()
return True
else: # answer == mb.Cancel
return False
def errorMessage(self, title, message):
return QtWidgets.QMessageBox.critical(
self, title, '<p><b>%s</b></p>%s' % (title, message))
def currentPath(self):
return os.path.dirname(str(self.filename)) if self.filename else '.'
def chooseColor1(self):
color = self.colorDialog.getColor(
self.lineColor, 'Choose line color', default=DEFAULT_LINE_COLOR)
if color:
self.lineColor = color
# Change the color for all shape lines:
Shape.line_color = self.lineColor
self.canvas.update()
self.setDirty()
def chooseColor2(self):
color = self.colorDialog.getColor(
self.fillColor, 'Choose fill color', default=DEFAULT_FILL_COLOR)
if color:
self.fillColor = color
Shape.fill_color = self.fillColor
self.canvas.update()
self.setDirty()
def deleteSelectedShape(self):
yes, no = QtWidgets.QMessageBox.Yes, QtWidgets.QMessageBox.No
msg = 'You are about to permanently delete this polygon, ' \
'proceed anyway?'
if yes == QtWidgets.QMessageBox.warning(self, 'Attention', msg,
yes | no):
self.remLabel(self.canvas.deleteSelected())
self.setDirty()
if self.noShapes():
for action in self.actions.onShapesPresent:
action.setEnabled(False)
def chshapeLineColor(self):
color = self.colorDialog.getColor(
self.lineColor, 'Choose line color', default=DEFAULT_LINE_COLOR)
if color:
self.canvas.selectedShape.line_color = color
self.canvas.update()
self.setDirty()
def chshapeFillColor(self):
color = self.colorDialog.getColor(
self.fillColor, 'Choose fill color', default=DEFAULT_FILL_COLOR)
if color:
self.canvas.selectedShape.fill_color = color
self.canvas.update()
self.setDirty()
def copyShape(self):
self.canvas.endMove(copy=True)
self.addLabel(self.canvas.selectedShape)
self.setDirty()
def moveShape(self):
self.canvas.endMove(copy=False)
self.setDirty()
def openDirDialog(self, _value=False, dirpath=None):
if not self.mayContinue():
return
defaultOpenDirPath = dirpath if dirpath else '.'
if self.lastOpenDir and os.path.exists(self.lastOpenDir):
defaultOpenDirPath = self.lastOpenDir
else:
defaultOpenDirPath = os.path.dirname(self.filename) \
if self.filename else '.'
targetDirPath = str(QtWidgets.QFileDialog.getExistingDirectory(
self, '%s - Open Directory' % __appname__, defaultOpenDirPath,
QtWidgets.QFileDialog.ShowDirsOnly |
QtWidgets.QFileDialog.DontResolveSymlinks))
self.importDirImages(targetDirPath)
@property
def imageList(self):
lst = []
for i in range(self.fileListWidget.count()):
item = self.fileListWidget.item(i)
lst.append(item.text())
return lst
def importDirImages(self, dirpath):
if not self.mayContinue() or not dirpath:
return
self.lastOpenDir = dirpath
self.filename = None
self.fileListWidget.clear()
for imgPath in self.scanAllImages(dirpath):
item = QtWidgets.QListWidgetItem(imgPath)
self.fileListWidget.addItem(item)
self.openNextImg()
def scanAllImages(self, folderPath):
extensions = ['.%s' % fmt.data().decode("ascii").lower()
for fmt in QtGui.QImageReader.supportedImageFormats()]
images = []
for root, dirs, files in os.walk(folderPath):
for file in files:
if file.lower().endswith(tuple(extensions)):
relativePath = os.path.join(root, file)
images.append(relativePath)
images.sort(key=lambda x: x.lower())
return images
def inverted(color):
return QtGui.QColor(*[255 - v for v in color.getRgb()])
def read(filename, default=None):
try:
with open(filename, 'rb') as f:
return f.read()
except Exception:
return default
def main():
"""Standard boilerplate Qt application code."""
parser = argparse.ArgumentParser()
parser.add_argument('filename', nargs='?', help='image or label filename')
parser.add_argument('--output', '-O', '-o', help='output label name')
parser.add_argument('--nodata', dest='store_data', action='store_false',
help='stop storing image data to JSON file')
parser.add_argument('--labels',
help='comma separated list of labels OR file '
'containing one label per line')
parser.add_argument('--nosortlabels', dest='sort_labels',
action='store_false', help='stop sorting labels')
args = parser.parse_args()
if args.labels is not None:
if os.path.isfile(args.labels):
args.labels = [l.strip() for l in open(args.labels, 'r')
if l.strip()]
else:
args.labels = [l for l in args.labels.split(',') if l]
app = QtWidgets.QApplication(sys.argv)
app.setApplicationName(__appname__)
app.setWindowIcon(newIcon("icon"))
win = MainWindow(
filename=args.filename,
output=args.output,
store_data=args.store_data,
labels=args.labels,
sort_labels=args.sort_labels,
)
win.show()
win.raise_()
sys.exit(app.exec_())