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labelme.py 34.14 KiB
#!/usr/bin/env python
# -*- coding: utf8 -*-
#
# Copyright (C) 2011 Michael Pitidis, Hussein Abdulwahid.
#
# This file is part of Labelme.
#
# Labelme is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# Labelme is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with Labelme. If not, see <http://www.gnu.org/licenses/>.
#
import os.path
import re
import sys
import subprocess
from functools import partial
from collections import defaultdict
from PyQt4.QtGui import *
from PyQt4.QtCore import *
import resources
from lib import struct, newAction, newIcon, addActions, fmtShortcut
from shape import Shape, DEFAULT_LINE_COLOR, DEFAULT_FILL_COLOR
from canvas import Canvas
from zoomWidget import ZoomWidget
from labelDialog import LabelDialog
from colorDialog import ColorDialog
from labelFile import LabelFile, LabelFileError
from toolBar import ToolBar
__appname__ = 'labelme'
# FIXME
# - [medium] Set max zoom value to something big enough for FitWidth/Window
# TODO:
# - [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(u'%sToolBar' % title)
#toolbar.setOrientation(Qt.Vertical)
toolbar.setToolButtonStyle(Qt.ToolButtonTextUnderIcon)
if actions:
addActions(toolbar, actions)
self.addToolBar(Qt.LeftToolBarArea, toolbar)
return toolbar
class MainWindow(QMainWindow, WindowMixin):
FIT_WINDOW, FIT_WIDTH, MANUAL_ZOOM = range(3)
def __init__(self, filename=None):
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)
self.labelList = QListWidget()
self.itemsToShapes = {}
self.shapesToItems = {}
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)
listLayout = QVBoxLayout()
listLayout.setContentsMargins(0, 0, 0, 0)
listLayout.addWidget(self.labelList)
self.editButton = QToolButton()
self.editButton.setToolButtonStyle(Qt.ToolButtonTextBesideIcon)
self.labelListContainer = QWidget()
self.labelListContainer.setLayout(listLayout)
listLayout.addWidget(self.editButton)#, 0, Qt.AlignCenter)
listLayout.addWidget(self.labelList)
self.dock = QDockWidget(u'Polygon Labels', self)
self.dock.setObjectName(u'Labels')
self.dock.setWidget(self.labelListContainer)
self.zoomWidget = ZoomWidget()
self.colorDialog = ColorDialog(parent=self)
self.canvas = Canvas()
self.canvas.zoomRequest.connect(self.zoomRequest)
scroll = QScrollArea()
scroll.setWidget(self.canvas)
scroll.setWidgetResizable(True)
self.scrollBars = {
Qt.Vertical: scroll.verticalScrollBar(),
Qt.Horizontal: scroll.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(scroll)
self.addDockWidget(Qt.RightDockWidgetArea, self.dock)
self.dockFeatures = QDockWidget.DockWidgetClosable\
| QDockWidget.DockWidgetFloatable
self.dock.setFeatures(self.dock.features() ^ self.dockFeatures)
# Actions
action = partial(newAction, self)
quit = action('&Quit', self.close,
'Ctrl+Q', 'quit', u'Quit application')
open = action('&Open', self.openFile,
'Ctrl+O', 'open', u'Open image or label file')
save = action('&Save', self.saveFile,
'Ctrl+S', 'save', u'Save labels to file', enabled=False)
saveAs = action('&Save As', self.saveFileAs,
'Ctrl+Shift+S', 'save-as', u'Save labels to a different file',
enabled=False)
close = action('&Close', self.closeFile,
'Ctrl+W', 'close', u'Close current file')
color1 = action('Polygon &Line Color', self.chooseColor1,
'Ctrl+L', 'color_line', u'Choose polygon line color')
color2 = action('Polygon &Fill Color', self.chooseColor2,
'Ctrl+Shift+L', 'color', u'Choose polygon fill color')
createMode = action('Create\nPolygo&ns', self.setCreateMode,
'Ctrl+N', 'new', u'Start drawing polygons', enabled=False)
editMode = action('&Edit\nPolygons', self.setEditMode,
'Ctrl+J', 'edit', u'Move and edit polygons', enabled=False)
create = action('Create\nPolygo&n', self.createShape,
'Ctrl+N', 'new', u'Draw a new polygon', enabled=False)
delete = action('Delete\nPolygon', self.deleteSelectedShape,
'Delete', 'delete', u'Delete', enabled=False)
copy = action('&Duplicate\nPolygon', self.copySelectedShape,
'Ctrl+D', 'copy', u'Create a duplicate of the selected polygon',
enabled=False)
advancedMode = action('&Advanced Mode', self.toggleAdvancedMode,
'Ctrl+Shift+A', 'expert', u'Switch to advanced mode',
checkable=True)
hideAll = action('&Hide\nPolygons', partial(self.togglePolygons, False),
'Ctrl+H', 'hide', u'Hide all polygons',
enabled=False)
showAll = action('&Show\nPolygons', partial(self.togglePolygons, True),
'Ctrl+A', 'hide', u'Show all polygons',
enabled=False)
help = action('&Tutorial', self.tutorial, 'Ctrl+T', 'help',
u'Show screencast of introductory tutorial')
zoom = QWidgetAction(self)
zoom.setDefaultWidget(self.zoomWidget)
self.zoomWidget.setWhatsThis(
u"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', partial(self.addZoom, 10),
'Ctrl++', 'zoom-in', u'Increase zoom level', enabled=False)
zoomOut = action('&Zoom Out', partial(self.addZoom, -10),
'Ctrl+-', 'zoom-out', u'Decrease zoom level', enabled=False)
zoomOrg = action('&Original size', partial(self.setZoom, 100),
'Ctrl+=', 'zoom', u'Zoom to original size', enabled=False)
fitWindow = action('&Fit Window', self.setFitWindow,
'Ctrl+F', 'fit-window', u'Zoom follows window size',
checkable=True, enabled=False)
fitWidth = action('Fit &Width', self.setFitWidth,
'Ctrl+Shift+F', 'fit-width', u'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', u'Modify the label of the selected polygon',
enabled=False)
self.editButton.setDefaultAction(edit)
shapeLineColor = action('Shape &Line Color', self.chshapeLineColor,
icon='color_line', tip=u'Change the line color for this specific shape',
enabled=False)
shapeFillColor = action('Shape &Fill Color', self.chshapeFillColor,
icon='color', tip=u'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 = 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,
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,save,saveAs,close,quit),
beginner=(), advanced=(),
editMenu=(edit, copy, delete, None, color1, color2),
beginnerContext=(create, edit, copy, delete),
advancedContext=(createMode, editMode, edit, copy,
delete, shapeLineColor, shapeFillColor),
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=QMenu('Open &Recent'),
labelList=labelMenu)
addActions(self.menus.file,
(open, 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, save, None, create, copy, delete, None,
zoomIn, zoom, zoomOut, fitWindow, fitWidth)
self.actions.advanced = (
open, save, None,
createMode, editMode, None,
hideAll, showAll)
self.statusBar().showMessage('%s started.' % __appname__)
self.statusBar().show()
# Application state.
self.image = QImage()
self.filename = filename
self.recentFiles = []
self.maxRecent = 7
self.lineColor = None
self.fillColor = None
self.zoom_level = 100
self.fit_window = False
# XXX: Could be completely declarative.
# Restore application settings.
types = {
'filename': QString,
'recentFiles': QStringList,
'window/size': QSize,
'window/position': QPoint,
'window/geometry': QByteArray,
# Docks and toolbars:
'window/state': QByteArray,
}
self.settings = settings = Settings(types)
self.recentFiles = list(settings['recentFiles'])
size = settings.get('window/size', QSize(600, 500))
position = settings.get('window/position', QPoint(0, 0))
self.resize(size)
self.move(position)
# or simply:
#self.restoreGeometry(settings['window/geometry']
self.restoreState(settings['window/state'])
self.lineColor = QColor(settings.get('line/color', Shape.line_color))
self.fillColor = QColor(settings.get('fill/color', Shape.fill_color))
Shape.line_color = self.lineColor
Shape.fill_color = self.fillColor
if settings.get('advanced', QVariant()).toBool():
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.
self.queueEvent(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.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)
def setClean(self):
self.dirty = False
self.actions.save.setEnabled(False)
self.actions.create.setEnabled(True)
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):
QTimer.singleShot(0, function)
def status(self, message, delay=5000):
self.statusBar().showMessage(message, delay)
def resetState(self):
self.itemsToShapes.clear()
self.shapesToItems.clear()
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):
"""In the middle of drawing, toggling between modes should be disabled."""
self.actions.editMode.setEnabled(not 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(unicode(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 = QAction(
icon, '&%d %s' % (i+1, QFileInfo(f).fileName()), self)
action.triggered.connect(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 not None:
item.setText(text)
self.setDirty()
# React to canvas signals.
def shapeSelectionChanged(self, selected=False):
if self._noSelectionSlot:
self._noSelectionSlot = False
else:
shape = self.canvas.selectedShape
if shape:
self.labelList.setItemSelected(self.shapesToItems[shape], 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 = QListWidgetItem(shape.label)
item.setFlags(item.flags() | Qt.ItemIsUserCheckable)
item.setCheckState(Qt.Checked)
self.itemsToShapes[item] = shape
self.shapesToItems[shape] = item
self.labelList.addItem(item)
for action in self.actions.onShapesPresent:
action.setEnabled(True)
def remLabel(self, shape):
item = self.shapesToItems[shape]
self.labelList.takeItem(self.labelList.row(item))
del self.shapesToItems[shape]
del self.itemsToShapes[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(QPointF(x, y))
shape.close()
s.append(shape)
self.addLabel(shape)
if line_color:
shape.line_color = QColor(*line_color)
if fill_color:
shape.fill_color = QColor(*fill_color)
self.canvas.loadShapes(s)
def saveLabels(self, filename):
lf = LabelFile()
def format_shape(s):
return dict(label=unicode(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.canvas.shapes]
try:
lf.save(filename, shapes, unicode(self.filename), self.imageData,
self.lineColor.getRgb(), self.fillColor.getRgb())
self.labelFile = lf
self.filename = filename
return True
except LabelFileError, e:
self.errorMessage(u'Error saving label data',
u'<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
self.canvas.selectShape(self.itemsToShapes[item])
def labelItemChanged(self, item):
shape = self.itemsToShapes[item]
label = unicode(item.text())
if label != shape.label:
shape.label = unicode(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.
"""
text = self.labelDialog.popUp()
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 / (8 * 15)
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):
units = delta / (8 * 15)
scale = 10
self.addZoom(scale * units)
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.itemsToShapes.iteritems():
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['filename']
filename = unicode(filename)
if QFile.exists(filename):
if LabelFile.isLabelFile(filename):
try:
self.labelFile = LabelFile(filename)
except LabelFileError, e:
self.errorMessage(u'Error opening file',
(u"<p><b>%s</b></p>"
u"<p>Make sure <i>%s</i> is a valid label file.")\
% (e, filename))
self.status("Error reading %s" % filename)
return False
self.imageData = self.labelFile.imageData
self.lineColor = QColor(*self.labelFile.lineColor)
self.fillColor = QColor(*self.labelFile.fillColor)
else:
# Load image:
# read data first and store for saving into label file.
self.imageData = read(filename, None)
self.labelFile = None
image = QImage.fromData(self.imageData)
if image.isNull():
self.errorMessage(u'Error opening file',
u"<p>Make sure <i>%s</i> is a valid image file." % filename)
self.status("Error reading %s" % filename)
return False
self.status("Loaded %s" % os.path.basename(unicode(filename)))
self.image = image
self.filename = filename
self.canvas.loadPixmap(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)
return True
return False
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 in order 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
s['filename'] = self.filename if self.filename else QString()
s['window/size'] = self.size()
s['window/position'] = self.pos()
s['window/state'] = self.saveState()
s['line/color'] = self.lineColor
s['fill/color'] = self.fillColor
s['recentFiles'] = self.recentFiles
s['advanced'] = not self._beginner
# ask the use for where to save the labels
#s['window/geometry'] = self.saveGeometry()
## User Dialogs ##
def loadRecent(self, filename):
if self.mayContinue():
self.loadFile(filename)
def openFile(self, _value=False):
if not self.mayContinue():
return
path = os.path.dirname(unicode(self.filename))\
if self.filename else '.'
formats = ['*.%s' % unicode(fmt).lower()\
for fmt in QImageReader.supportedImageFormats()]
filters = "Image & Label files (%s)" % \
' '.join(formats + ['*%s' % LabelFile.suffix])
filename = unicode(QFileDialog.getOpenFileName(self,
'%s - Choose Image or Label file' % __appname__, path, filters))
if filename:
self.loadFile(filename)
def saveFile(self, _value=False):
assert not self.image.isNull(), "cannot save empty image"
if self.hasLabels():
self._saveFile(self.filename if self.labelFile\
else 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 = QFileDialog(self, caption, self.currentPath(), filters)
dlg.setDefaultSuffix(LabelFile.suffix[1:])
dlg.setAcceptMode(QFileDialog.AcceptSave)
dlg.setConfirmOverwrite(True)
dlg.setOption(QFileDialog.DontUseNativeDialog, False)
if dlg.exec_():
return dlg.selectedFiles()[0]
return ''
#return unicode(QFileDialog.getSaveFileName(self,
# '%s - Choose File', self.currentPath(),
# 'Label files (*%s)' % LabelFile.suffix))
def _saveFile(self, filename):
if filename and self.saveLabels(filename):
self.addRecentFile(filename)
self.setClean()
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.itemsToShapes:
self.errorMessage(u'No objects labeled',
u'You must label at least one object to save the file.')
return False
return True
def mayContinue(self):
return not (self.dirty and not self.discardChangesDialog())
def discardChangesDialog(self):
yes, no = QMessageBox.Yes, QMessageBox.No
msg = u'You have unsaved changes, proceed anyway?'
return yes == QMessageBox.warning(self, u'Attention', msg, yes|no)
def errorMessage(self, title, message):
return QMessageBox.critical(self, title,
'<p><b>%s</b></p>%s' % (title, message))
def currentPath(self):
return os.path.dirname(unicode(self.filename)) if self.filename else '.'
def chooseColor1(self):
color = self.colorDialog.getColor(self.lineColor, u'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, u'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 = QMessageBox.Yes, QMessageBox.No
msg = u'You are about to permanently delete this polygon, proceed anyway?'
if yes == QMessageBox.warning(self, u'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, u'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, u'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()
class Settings(object):
"""Convenience dict-like wrapper around QSettings."""
def __init__(self, types=None):
self.data = QSettings()
self.types = defaultdict(lambda: QVariant, types if types else {})
def __setitem__(self, key, value):
t = self.types[key]
self.data.setValue(key,
t(value) if not isinstance(value, t) else value)
def __getitem__(self, key):
return self._cast(key, self.data.value(key))
def get(self, key, default=None):
return self._cast(key, self.data.value(key, default))
def _cast(self, key, value):
# XXX: Very nasty way of converting types to QVariant methods :P
t = self.types[key]
if t != QVariant:
method = getattr(QVariant, re.sub('^Q', 'to', t.__name__, count=1))
return method(value)
return value
def inverted(color):
return QColor(*[255 - v for v in color.getRgb()])
def read(filename, default=None):
try:
with open(filename, 'rb') as f:
return f.read()
except:
return default
def main(argv):
"""Standard boilerplate Qt application code."""
app = QApplication(argv)
app.setApplicationName(__appname__)
app.setWindowIcon(newIcon("app"))
win = MainWindow(argv[1] if len(argv) == 2 else None)
win.show()
return app.exec_()
if __name__ == '__main__':
sys.exit(main(sys.argv))