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from os import makedirs
from os.path import basename
import errno
from PyQt5.QtCore import QDir, QDirIterator, QItemSelectionModel, Qt
from PyQt5.QtGui import QPixmap
from PyQt5.QtWidgets import ( QAction, QComboBox, QFileDialog,
QListView, QMainWindow, QProgressBar, QSpinBox, QSplitter, QVBoxLayout,
QWidget, qApp )
from YOSO.Classes import Class, ClassListModel
from YOSO.Workspace import Workspace
import YOSO
class MainWindow(QMainWindow):
_classes_view = None
_current_images = []
_image_dirs_combo_box = None
_image_spinner = None
_next_image_action = None
_prev_image_action = None
_progress_bar = None
_top_images_dir = None
_top_labels_dir = None
_workspace = None
def openImages(self, directory):
image_it = QDirIterator(directory, YOSO.IMAGE_FILE_TEMPLATES,
QDir.Files, QDirIterator.Subdirectories)
self._current_images = []
while image_it.hasNext():
self._current_images.append(image_it.next())
self._current_images.sort()
self._image_spinner.setRange(0, 0)
self._image_spinner.setEnabled(False)
self._image_spinner.setValue(0)
image_total = len(self._current_images)
if image_total > 0:
self._progress_bar.setRange(1, image_total + 1)
self._image_spinner.setRange(1, image_total)
self._image_spinner.setEnabled(True)
self._image_spinner.setValue(1)
def openDataDir(self):
dialog = QFileDialog(self)
dialog.setFileMode(QFileDialog.Directory)
dialog.setOption(QFileDialog.ReadOnly)
if dialog.exec():
datadir = dialog.selectedFiles()[0]
classesdir = YOSO.classesDir(datadir)
classesdir_it = QDirIterator(classesdir, YOSO.IMAGE_FILE_TEMPLATES, QDir.Files)
classes = []
while classesdir_it.hasNext():
class_image = classesdir_it.next()
match = YOSO.CLASSES_RE.match(basename(class_image))
if match != None:
class_num = int(match.group('cls'))
class_name = match.group('name')
class_object = Class(class_num, class_name, QPixmap(class_image))
classes.append(class_object)
classes.sort(key = lambda c: c.number)
classes_model = ClassListModel(classes)
self._classes_view.setModel(classes_model)
self._workspace.setModel(classes_model)
self._classes_view.setEnabled(len(classes) > 0)
selMod = self._classes_view.selectionModel()
selMod.currentChanged.connect(self._workspace.setDefaultClass)
selMod.setCurrentIndex(classes_model.index(0, 0), QItemSelectionModel.Select)
self._top_images_dir = YOSO.imagesDir(datadir)
self._top_labels_dir = YOSO.labelsDir(datadir)
imagedir_it = QDirIterator(self._top_images_dir,
QDir.AllDirs | QDir.NoDotAndDotDot, QDirIterator.Subdirectories)
self._image_dirs_combo_box.clear()
self._image_dirs_combo_box.addItem(self._top_images_dir)
while imagedir_it.hasNext():
img_dir = imagedir_it.next()
self._image_dirs_combo_box.addItem(img_dir)
lbl_dir = img_dir.replace(self._top_images_dir, self._top_labels_dir)
try:
makedirs(lbl_dir)
except OSError as ex:
if ex.errno != errno.EEXIST:
raise
def loadImage(self, i):
self._prev_image_action.setEnabled(i > 1)
self._next_image_action.setEnabled(i < self._image_spinner.maximum())
if 1 <= i <= self._image_spinner.maximum():
image_path = self._current_images[i - 1]
label_path = image_path.replace(self._top_images_dir, self._top_labels_dir) + '.txt'
self._workspace.loadImage(image_path, label_path)
def nextImage(self):
self._image_spinner.setValue(self._image_spinner.value() + 1)
def prevImage(self):
self._image_spinner.setValue(self._image_spinner.value() - 1)
def __init__(self):
super().__init__()
self.setWindowTitle('YOSO - You Only Show Once')
self.resize(800, 600)
self.move(qApp.desktop().availableGeometry().center() - self.frameGeometry().center())
quit_action = QAction('&Quit', self)
quit_action.setShortcut('Q')
quit_action.setStatusTip('Quit application')
quit_action.triggered.connect(qApp.quit)
open_action = QAction('&Open', self)
open_action.setShortcut('O')
open_action.setStatusTip('Open data directory')
open_action.triggered.connect(self.openDataDir)
self._prev_image_action = QAction('Prev (&A)', self)
self._prev_image_action.setEnabled(False)
self._prev_image_action.setShortcut('A')
self._prev_image_action.setStatusTip('Show previous image')
self._prev_image_action.triggered.connect(self.prevImage)
self._next_image_action = QAction('Next (&D)', self)
self._next_image_action.setEnabled(False)
self._next_image_action.setShortcut('D')
self._next_image_action.setStatusTip('Show next image')
self._next_image_action.triggered.connect(self.nextImage)
menubar = self.menuBar()
menubar.addAction(open_action)
menubar.addSeparator()
menubar.addAction(self._prev_image_action)
menubar.addAction(self._next_image_action)
menubar.addSeparator()
menubar.addAction(quit_action)
statusbar = self.statusBar()
self._progress_bar = QProgressBar()
self._progress_bar.setFormat('%p% of %m')
self._image_spinner = QSpinBox()
self._image_spinner.setEnabled(False)
self._image_spinner.valueChanged.connect(self.loadImage)
self._image_spinner.valueChanged.connect(self._progress_bar.setValue)
statusbar.addWidget(self._image_spinner)
statusbar.addWidget(self._progress_bar)
statusbar.show()
main_split = QSplitter(Qt.Horizontal)
left_side = QWidget(main_split)
right_side = QWidget(main_split)
right_layout = QVBoxLayout()
left_layout = QVBoxLayout()
right_side.setLayout(right_layout)
left_side.setLayout(left_layout)
self._workspace = Workspace()
self._classes_view = QListView()
self._classes_view.setEnabled(False)
self._classes_view.setDragEnabled(True)
right_layout.addWidget(self._classes_view)
left_layout.addWidget(self._workspace)
self._image_dirs_combo_box = QComboBox()
left_layout.addWidget(self._image_dirs_combo_box)
self._image_dirs_combo_box.currentTextChanged.connect(self.openImages)
main_split.setStretchFactor(0, 1)
main_split.setStretchFactor(1, 0)
self.setCentralWidget(main_split)
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