class MainWindow(QMainWindow):
################################
# signals (aset ui --> aset api)
################################
create_document_base = pyqtSignal(str, list)
add_attribute = pyqtSignal(str, ASETDocumentBase)
remove_attribute = pyqtSignal(str, ASETDocumentBase)
forget_matches_for_attribute = pyqtSignal(str, ASETDocumentBase)
load_document_base_from_bson = pyqtSignal(str)
save_document_base_to_bson = pyqtSignal(str, ASETDocumentBase)
save_table_to_csv = pyqtSignal(str, ASETDocumentBase)
forget_matches = pyqtSignal(ASETDocumentBase)
load_preprocessing_phase_from_config = pyqtSignal(str)
save_preprocessing_phase_to_config = pyqtSignal(str, PreprocessingPhase)
load_matching_phase_from_config = pyqtSignal(str)
save_matching_phase_to_config = pyqtSignal(str, BaseMatchingPhase)
run_preprocessing_phase = pyqtSignal(ASETDocumentBase, PreprocessingPhase, Statistics)
run_matching_phase = pyqtSignal(ASETDocumentBase, BaseMatchingPhase, Statistics)
save_statistics_to_json = pyqtSignal(str, Statistics)
load_and_run_default_preprocessing_phase = pyqtSignal(ASETDocumentBase, Statistics)
load_and_run_default_matching_phase = pyqtSignal(ASETDocumentBase, Statistics)
##############################
# slots (aset api --> aset ui)
##############################
@pyqtSlot(str, float)
def status(self, message, progress):
logger.debug("Called slot 'status'.")
self.status_widget_message.setText(message)
if progress == -1:
self.status_widget_progress.setRange(0, 0)
else:
self.status_widget_progress.setRange(0, 100)
self.status_widget_progress.setValue(int(progress * 100))
@pyqtSlot(str)
def finished(self, message):
logger.debug("Called slot 'finished'.")
self.status_widget_message.setText(message)
self.status_widget_progress.setRange(0, 100)
self.status_widget_progress.setValue(100)
self.show_document_base_viewer_widget()
self.enable_global_input()
@pyqtSlot(str)
def error(self, message):
logger.debug("Called slot 'error'.")
self.status_widget_message.setText(message)
self.status_widget_progress.setRange(0, 100)
self.status_widget_progress.setValue(0)
self.show_document_base_viewer_widget()
self.enable_global_input()
@pyqtSlot(ASETDocumentBase)
def document_base_to_ui(self, document_base):
logger.debug("Called slot 'document_base_to_ui'.")
self.document_base = document_base
self.document_base_viewer_widget.update_document_base(self.document_base)
self._was_enabled.append(self.save_document_base_to_bson_action)
self._was_enabled.append(self.save_table_to_csv_action)
self._was_enabled.append(self.add_attribute_action)
self._was_enabled.append(self.remove_attribute_action)
self._was_enabled.append(self.forget_matches_for_attribute_action)
self._was_enabled.append(self.forget_matches_action)
self._was_enabled.append(self.load_and_run_default_preprocessing_phase_action)
self._was_enabled.append(self.load_and_run_default_matching_phase_action)
if self.preprocessing_phase is not None:
self._was_enabled.append(self.run_preprocessing_phase_action)
if self.matching_phase is not None:
self._was_enabled.append(self.run_matching_phase_action)
@pyqtSlot(PreprocessingPhase)
def preprocessing_phase_to_ui(self, preprocessing_phase):
logger.debug("Called slot 'preprocessing_phase_to_ui'.")
self.preprocessing_phase = preprocessing_phase
self._was_enabled.append(self.save_preprocessing_phase_to_config_action)
if self.document_base is not None:
self._was_enabled.append(self.run_preprocessing_phase_action)
@pyqtSlot(BaseMatchingPhase)
def matching_phase_to_ui(self, matching_phase):
logger.debug("Called slot 'matching_phase_to_ui'.")
self.matching_phase = matching_phase
self._was_enabled.append(self.save_matching_phase_to_config_action)
if self.document_base is not None:
self._was_enabled.append(self.run_preprocessing_phase_action)
@pyqtSlot(Statistics)
def statistics_to_ui(self, statistics):
logger.debug("Called slot 'statistics_to_ui'.")
self.statistics = statistics
@pyqtSlot(dict)
def feedback_request_to_ui(self, feedback_request):
logger.debug("Called slot 'feedback_request_to_ui'.")
self.interactive_matching_widget.handle_feedback_request(feedback_request)
# noinspection PyUnresolvedReferences
def _connect_slots_and_signals(self):
self.create_document_base.connect(self.api.create_document_base)
self.add_attribute.connect(self.api.add_attribute)
self.remove_attribute.connect(self.api.remove_attribute)
self.forget_matches_for_attribute.connect(self.api.forget_matches_for_attribute)
self.load_document_base_from_bson.connect(self.api.load_document_base_from_bson)
self.save_document_base_to_bson.connect(self.api.save_document_base_to_bson)
self.save_table_to_csv.connect(self.api.save_table_to_csv)
self.forget_matches.connect(self.api.forget_matches)
self.load_preprocessing_phase_from_config.connect(self.api.load_preprocessing_phase_from_config)
self.save_preprocessing_phase_to_config.connect(self.api.save_preprocessing_phase_to_config)
self.load_matching_phase_from_config.connect(self.api.load_matching_phase_from_config)
self.save_matching_phase_to_config.connect(self.api.save_matching_phase_to_config)
self.run_preprocessing_phase.connect(self.api.run_preprocessing_phase)
self.run_matching_phase.connect(self.api.run_matching_phase)
self.save_statistics_to_json.connect(self.api.save_statistics_to_json)
self.load_and_run_default_preprocessing_phase.connect(self.api.load_and_run_default_preprocessing_phase)
self.load_and_run_default_matching_phase.connect(self.api.load_and_run_default_matching_phase)
self.api.status.connect(self.status)
self.api.finished.connect(self.finished)
self.api.error.connect(self.error)
self.api.document_base_to_ui.connect(self.document_base_to_ui)
self.api.preprocessing_phase_to_ui.connect(self.preprocessing_phase_to_ui)
self.api.matching_phase_to_ui.connect(self.matching_phase_to_ui)
self.api.statistics_to_ui.connect(self.statistics_to_ui)
self.api.feedback_request_to_ui.connect(self.feedback_request_to_ui)
#######
# tasks
#######
def load_document_base_from_bson_task(self):
logger.info("Execute task 'load_document_base_from_bson_task'.")
path, ok = QFileDialog.getOpenFileName(self, "Choose a document collection .bson file!")
if ok:
self.disable_global_input()
# noinspection PyUnresolvedReferences
self.load_document_base_from_bson.emit(str(path))
def save_document_base_to_bson_task(self):
logger.info("Execute task 'save_document_base_to_bson_task'.")
if self.document_base is not None:
path, ok = QFileDialog.getSaveFileName(self, "Choose where to save the document collection .bson file!")
if ok:
self.disable_global_input()
# noinspection PyUnresolvedReferences
self.save_document_base_to_bson.emit(str(path), self.document_base)
def add_attribute_task(self):
logger.info("Execute task 'add_attribute_task'.")
if self.document_base is not None:
name, ok = QInputDialog.getText(self, "Create Attribute", "Attribute name:")
if ok:
self.disable_global_input()
# noinspection PyUnresolvedReferences
self.add_attribute.emit(str(name), self.document_base)
def remove_attribute_task(self):
logger.info("Execute task 'remove_attribute_task'.")
if self.document_base is not None:
name, ok = QInputDialog.getText(self, "Remove Attribute", "Attribute name:")
if ok:
self.disable_global_input()
# noinspection PyUnresolvedReferences
self.remove_attribute.emit(str(name), self.document_base)
def remove_attribute_with_given_name_task(self, attribute_name):
logger.info("Execute task 'remove_attribute_with_given_name_task'.")
if self.document_base is not None:
self.disable_global_input()
# noinspection PyUnresolvedReferences
self.remove_attribute.emit(str(attribute_name), self.document_base)
def forget_matches_for_attribute_task(self):
logger.info("Execute task 'forget_matches_for_attribute_task'.")
if self.document_base is not None:
name, ok = QInputDialog.getText(self, "Forget Matches for Attribute", "Attribute name:")
if ok:
self.disable_global_input()
# noinspection PyUnresolvedReferences
self.forget_matches_for_attribute.emit(str(name), self.document_base)
def forget_matches_for_attribute_with_given_name_task(self, attribute_name):
logger.info("Execute task 'forget_matches_for_attribute_with_given_name_task'.")
if self.document_base is not None:
self.disable_global_input()
# noinspection PyUnresolvedReferences
self.forget_matches_for_attribute.emit(attribute_name, self.document_base)
def forget_matches_task(self):
logger.info("Execute task 'forget_matches_task'.")
if self.document_base is not None:
self.disable_global_input()
# noinspection PyUnresolvedReferences
self.forget_matches.emit(self.document_base)
def enable_collect_statistics_task(self):
logger.info("Execute task 'task_enable_collect_statistics'.")
self.collect_statistics = True
self.enable_collect_statistics_action.setEnabled(False)
self.disable_collect_statistics_action.setEnabled(True)
def disable_collect_statistics_task(self):
logger.info("Execute task 'disable_collect_statistics_task'.")
self.collect_statistics = False
self.disable_collect_statistics_action.setEnabled(False)
self.enable_collect_statistics_action.setEnabled(True)
def save_statistics_to_json_task(self):
logger.info("Execute task 'save_statistics_to_json_task'.")
if self.statistics is not None:
path = str(QFileDialog.getSaveFileName(self, "Choose where to save the statistics .json file!")[0])
if path != "":
self.disable_global_input()
# noinspection PyUnresolvedReferences
self.save_statistics_to_json.emit(path, self.statistics)
def show_document_base_creator_widget_task(self):
logger.info("Execute task 'show_document_base_creator_widget_task'.")
self.disable_global_input()
self.document_base_creator_widget.enable_input()
self.document_base_creator_widget.initialize_for_new_document_base()
self.show_document_base_creator_widget()
self.document_base_creator_widget.path.setFocus()
def create_document_base_task(self, path, attribute_names):
logger.info("Execute task 'create_document_base_task'.")
self.disable_global_input()
# noinspection PyUnresolvedReferences
self.create_document_base.emit(path, attribute_names)
def save_table_to_csv_task(self):
logger.info("Execute task 'save_table_to_csv_task'.")
if self.document_base is not None:
path = str(QFileDialog.getSaveFileName(self, "Choose where to save the table .csv file!")[0])
if path != "":
self.disable_global_input()
# noinspection PyUnresolvedReferences
self.save_table_to_csv.emit(path, self.document_base)
def load_preprocessing_phase_from_config_task(self):
logger.info("Execute task 'load_preprocessing_phase_from_config_task'.")
path = str(QFileDialog.getOpenFileName(self, "Choose a configuration .json file!")[0])
if path != "":
self.disable_global_input()
# noinspection PyUnresolvedReferences
self.load_preprocessing_phase_from_config.emit(path)
def save_preprocessing_phase_to_config_task(self):
logger.info("Execute task 'save_preprocessing_phase_to_config_task'.")
if self.preprocessing_phase is not None:
path = str(QFileDialog.getSaveFileName(self, "Choose where to save the configuration .json file!")[0])
if path != "":
self.disable_global_input()
# noinspection PyUnresolvedReferences
self.save_preprocessing_phase_to_config.emit(path, self.preprocessing_phase)
def load_matching_phase_from_config_task(self):
logger.info("Execute task 'load_matching_phase_from_config_task'.")
path = str(QFileDialog.getOpenFileName(self, "Choose a configuration .json file!")[0])
if path != "":
self.disable_global_input()
# noinspection PyUnresolvedReferences
self.load_matching_phase_from_config.emit(path)
def save_matching_phase_to_config_task(self):
logger.info("Execute task 'save_matching_phase_to_config_task'.")
if self.matching_phase is not None:
path = str(QFileDialog.getSaveFileName(self, "Choose where to save the configuration .json file!")[0])
if path != "":
self.disable_global_input()
# noinspection PyUnresolvedReferences
self.save_matching_phase_to_config.emit(path, self.matching_phase)
def run_preprocessing_phase_task(self):
logger.info("Execute task 'run_preprocessing_phase_task'.")
if self.document_base is not None and self.preprocessing_phase is not None:
self.statistics = Statistics(self.collect_statistics)
self.save_statistics_to_json_action.setEnabled(self.collect_statistics)
self.disable_global_input()
# noinspection PyUnresolvedReferences
self.run_preprocessing_phase.emit(self.document_base, self.preprocessing_phase, self.statistics)
def run_matching_phase_task(self):
logger.info("Execute task 'run_matching_phase_task'.")
if self.document_base is not None and self.matching_phase is not None:
self.statistics = Statistics(self.collect_statistics)
self.save_statistics_to_json_action.setEnabled(self.collect_statistics)
self.disable_global_input()
self.interactive_matching_widget.enable_input()
self.show_interactive_matching_widget()
# noinspection PyUnresolvedReferences
self.run_matching_phase.emit(self.document_base, self.matching_phase, self.statistics)
def give_feedback_task(self, feedback):
logger.info("Execute task 'give_feedback_task'.")
self.api.feedback = feedback
self.feedback_cond.wakeAll()
def load_and_run_default_preprocessing_phase_task(self):
logger.info("Execute task 'load_and_run_default_preprocessing_phase_task'.")
if self.document_base is not None:
self.statistics = Statistics(self.collect_statistics)
self.save_statistics_to_json_action.setEnabled(self.collect_statistics)
self.disable_global_input()
# noinspection PyUnresolvedReferences
self.load_and_run_default_preprocessing_phase.emit(self.document_base, self.statistics)
def load_and_run_default_matching_phase_task(self):
logger.info("Execute task 'load_and_run_default_matching_phase_task'.")
if self.document_base is not None:
self.statistics = Statistics(self.collect_statistics)
self.save_statistics_to_json_action.setEnabled(self.collect_statistics)
self.disable_global_input()
self.interactive_matching_widget.enable_input()
self.show_interactive_matching_widget()
# noinspection PyUnresolvedReferences
self.load_and_run_default_matching_phase.emit(self.document_base, self.statistics)
##################
# controller logic
##################
def enable_global_input(self):
for action in self._was_enabled:
action.setEnabled(True)
self.document_base_creator_widget.enable_input()
self.document_base_viewer_widget.enable_input()
self.interactive_matching_widget.enable_input()
self._was_enabled = []
def disable_global_input(self):
for action in self._all_actions:
if action.isEnabled():
self._was_enabled.append(action)
action.setEnabled(False)
self.document_base_creator_widget.disable_input()
self.document_base_viewer_widget.disable_input()
self.interactive_matching_widget.disable_input()
def show_document_base_viewer_widget(self):
if self.document_base_viewer_widget.isHidden():
self.central_widget_layout.setAlignment(Qt.AlignmentFlag.AlignLeft)
self.start_menu_widget.hide()
self.interactive_matching_widget.hide()
self.document_base_creator_widget.hide()
self.central_widget_layout.removeWidget(self.start_menu_widget)
self.central_widget_layout.removeWidget(self.interactive_matching_widget)
self.central_widget_layout.removeWidget(self.document_base_creator_widget)
self.central_widget_layout.addWidget(self.document_base_viewer_widget)
self.document_base_viewer_widget.show()
self.central_widget_layout.update()
def show_interactive_matching_widget(self):
if self.interactive_matching_widget.isHidden():
self.central_widget_layout.setAlignment(Qt.AlignmentFlag.AlignLeft)
self.start_menu_widget.hide()
self.document_base_viewer_widget.hide()
self.document_base_creator_widget.hide()
self.central_widget_layout.removeWidget(self.start_menu_widget)
self.central_widget_layout.removeWidget(self.document_base_viewer_widget)
self.central_widget_layout.removeWidget(self.document_base_creator_widget)
self.central_widget_layout.addWidget(self.interactive_matching_widget)
self.interactive_matching_widget.show()
self.central_widget_layout.update()
def show_document_base_creator_widget(self):
if self.document_base_creator_widget.isHidden():
self.central_widget_layout.setAlignment(Qt.AlignmentFlag.AlignLeft)
self.start_menu_widget.hide()
self.document_base_viewer_widget.hide()
self.interactive_matching_widget.hide()
self.central_widget_layout.removeWidget(self.start_menu_widget)
self.central_widget_layout.removeWidget(self.document_base_viewer_widget)
self.central_widget_layout.removeWidget(self.interactive_matching_widget)
self.central_widget_layout.addWidget(self.document_base_creator_widget)
self.document_base_creator_widget.show()
self.central_widget_layout.update()
def show_start_menu_widget(self):
if self.start_menu_widget.isHidden():
self.central_widget_layout.setAlignment(Qt.AlignmentFlag.AlignCenter)
self.document_base_viewer_widget.hide()
self.document_base_creator_widget.hide()
self.interactive_matching_widget.hide()
self.central_widget_layout.removeWidget(self.document_base_viewer_widget)
self.central_widget_layout.removeWidget(self.document_base_creator_widget)
self.central_widget_layout.removeWidget(self.interactive_matching_widget)
self.central_widget_layout.addWidget(self.start_menu_widget)
self.start_menu_widget.show()
self.central_widget_layout.update()
def __init__(self) -> None:
super(MainWindow, self).__init__()
self.setWindowTitle("ASET")
self.document_base = None
self.preprocessing_phase = None
self.matching_phase = None
self.statistics = Statistics(True)
self.collect_statistics = True
# set up the api_thread and api and connect slots and signals
self.feedback_mutex = QMutex()
self.feedback_cond = QWaitCondition()
self.api = ASETAPI(self.feedback_mutex, self.feedback_cond)
self.api_thread = QThread()
self.api.moveToThread(self.api_thread)
self._connect_slots_and_signals()
self.api_thread.start()
# set up the status bar
self.status_bar = self.statusBar()
self.status_bar.setFont(STATUS_BAR_FONT)
self.status_widget = QWidget(self.status_bar)
self.status_widget_layout = QHBoxLayout(self.status_widget)
self.status_widget_layout.setContentsMargins(0, 0, 0, 0)
self.status_widget_message = QLabel()
self.status_widget_message.setFont(STATUS_BAR_FONT)
self.status_widget_message.setMinimumWidth(10)
self.status_widget_layout.addWidget(self.status_widget_message)
self.status_widget_progress = QProgressBar()
self.status_widget_progress.setMinimumWidth(10)
self.status_widget_progress.setMaximumWidth(200)
self.status_widget_progress.setTextVisible(False)
self.status_widget_progress.setMaximumHeight(20)
self.status_widget_layout.addWidget(self.status_widget_progress)
self.status_bar.addPermanentWidget(self.status_widget)
# set up the actions
self._all_actions = []
self._was_enabled = []
self.exit_action = QAction("&Exit", self)
self.exit_action.setIcon(QIcon("aset_ui/resources/leave.svg"))
self.exit_action.setStatusTip("Exit the application.")
self.exit_action.triggered.connect(QApplication.instance().quit)
self._all_actions.append(self.exit_action)
self.show_document_base_creator_widget_action = QAction("&Create new document base", self)
self.show_document_base_creator_widget_action.setIcon(QIcon("aset_ui/resources/two_documents.svg"))
self.show_document_base_creator_widget_action.setStatusTip(
"Create a new document base from a collection of .txt files and a list of attribute names."
)
self.show_document_base_creator_widget_action.triggered.connect(self.show_document_base_creator_widget_task)
self._all_actions.append(self.show_document_base_creator_widget_action)
self.add_attribute_action = QAction("&Add attribute", self)
self.add_attribute_action.setIcon(QIcon("aset_ui/resources/plus.svg"))
self.add_attribute_action.setStatusTip("Add a new attribute to the document base.")
self.add_attribute_action.triggered.connect(self.add_attribute_task)
self.add_attribute_action.setEnabled(False)
self._all_actions.append(self.add_attribute_action)
self.remove_attribute_action = QAction("&Remove attribute", self)
self.remove_attribute_action.setIcon(QIcon("aset_ui/resources/trash.svg"))
self.remove_attribute_action.setStatusTip("Remove an attribute from the document base.")
self.remove_attribute_action.triggered.connect(self.remove_attribute_task)
self.remove_attribute_action.setEnabled(False)
self._all_actions.append(self.remove_attribute_action)
self.forget_matches_for_attribute_action = QAction("&Forget matches for attribute", self)
self.forget_matches_for_attribute_action.setIcon(QIcon("aset_ui/resources/redo.svg"))
self.forget_matches_for_attribute_action.setStatusTip("Forget the matches for a single attribute.")
self.forget_matches_for_attribute_action.triggered.connect(self.forget_matches_for_attribute_task)
self.forget_matches_for_attribute_action.setEnabled(False)
self._all_actions.append(self.forget_matches_for_attribute_action)
self.load_document_base_from_bson_action = QAction("&Load document base", self)
self.load_document_base_from_bson_action.setIcon(QIcon("aset_ui/resources/folder.svg"))
self.load_document_base_from_bson_action.setStatusTip("Load an existing document base from a .bson file.")
self.load_document_base_from_bson_action.triggered.connect(self.load_document_base_from_bson_task)
self._all_actions.append(self.load_document_base_from_bson_action)
self.save_document_base_to_bson_action = QAction("&Save document base", self)
self.save_document_base_to_bson_action.setIcon(QIcon("aset_ui/resources/save.svg"))
self.save_document_base_to_bson_action.setStatusTip("Save the document base in a .bson file.")
self.save_document_base_to_bson_action.triggered.connect(self.save_document_base_to_bson_task)
self.save_document_base_to_bson_action.setEnabled(False)
self._all_actions.append(self.save_document_base_to_bson_action)
self.save_table_to_csv_action = QAction("&Export table to CSV", self)
self.save_table_to_csv_action.setIcon(QIcon("aset_ui/resources/table.svg"))
self.save_table_to_csv_action.setStatusTip("Save the table to a .csv file.")
self.save_table_to_csv_action.triggered.connect(self.save_table_to_csv_task)
self.save_table_to_csv_action.setEnabled(False)
self._all_actions.append(self.save_table_to_csv_action)
self.forget_matches_action = QAction("&Forget all matches", self)
self.forget_matches_action.setIcon(QIcon("aset_ui/resources/redo.svg"))
self.forget_matches_action.setStatusTip("Forget the matches for all attributes.")
self.forget_matches_action.triggered.connect(self.forget_matches_task)
self.forget_matches_action.setEnabled(False)
self._all_actions.append(self.forget_matches_action)
self.load_and_run_default_preprocessing_phase_action = QAction(
"&Load and run default preprocessing phase", self
)
self.load_and_run_default_preprocessing_phase_action.setStatusTip(
"Load the default preprocessing phase and run it on the document collection."
)
self.load_and_run_default_preprocessing_phase_action.setIcon(QIcon("aset_ui/resources/run_run.svg"))
self.load_and_run_default_preprocessing_phase_action.setDisabled(True)
self.load_and_run_default_preprocessing_phase_action.triggered.connect(
self.load_and_run_default_preprocessing_phase_task
)
self._all_actions.append(self.load_and_run_default_preprocessing_phase_action)
self.load_preprocessing_phase_from_config_action = QAction("&Load preprocessing phase", self)
self.load_preprocessing_phase_from_config_action.setStatusTip(
"Load a preprocessing phase from a .json configuration file."
)
self.load_preprocessing_phase_from_config_action.triggered.connect(
self.load_preprocessing_phase_from_config_task
)
self._all_actions.append(self.load_preprocessing_phase_from_config_action)
self.save_preprocessing_phase_to_config_action = QAction("&Save preprocessing phase", self)
self.save_preprocessing_phase_to_config_action.setStatusTip(
"Save the preprocessing phase in a .json configuration file."
)
self.save_preprocessing_phase_to_config_action.triggered.connect(self.save_preprocessing_phase_to_config_task)
self.save_preprocessing_phase_to_config_action.setEnabled(False)
self._all_actions.append(self.save_preprocessing_phase_to_config_action)
self.run_preprocessing_phase_action = QAction("Run preprocessing phase", self)
self.run_preprocessing_phase_action.setIcon(QIcon("aset_ui/resources/run.svg"))
self.run_preprocessing_phase_action.setStatusTip("Run the preprocessing phase on the document collection.")
self.run_preprocessing_phase_action.triggered.connect(self.run_preprocessing_phase_task)
self.run_preprocessing_phase_action.setEnabled(False)
self._all_actions.append(self.run_preprocessing_phase_action)
self.load_and_run_default_matching_phase_action = QAction(
"&Load and run default matching phase", self
)
self.load_and_run_default_matching_phase_action.setStatusTip(
"Load the default matching phase and run it on the document collection."
)
self.load_and_run_default_matching_phase_action.setIcon(QIcon("aset_ui/resources/run_run.svg"))
self.load_and_run_default_matching_phase_action.setDisabled(True)
self.load_and_run_default_matching_phase_action.triggered.connect(
self.load_and_run_default_preprocessing_phase_task
)
self._all_actions.append(self.load_and_run_default_matching_phase_action)
self.load_matching_phase_from_config_action = QAction("&Load matching phase", self)
self.load_matching_phase_from_config_action.setStatusTip(
"Load a matching phase from a .json configuration file."
)
self.load_matching_phase_from_config_action.triggered.connect(self.load_matching_phase_from_config_task)
self._all_actions.append(self.load_matching_phase_from_config_action)
self.save_matching_phase_to_config_action = QAction("&Save matching phase", self)
self.save_matching_phase_to_config_action.setStatusTip("Save the matching phase in a .json configuration file.")
self.save_matching_phase_to_config_action.triggered.connect(self.save_matching_phase_to_config_task)
self.save_matching_phase_to_config_action.setEnabled(False)
self._all_actions.append(self.save_matching_phase_to_config_action)
self.run_matching_phase_action = QAction("Run matching phase", self)
self.run_matching_phase_action.setIcon(QIcon("aset_ui/resources/run.svg"))
self.run_matching_phase_action.setStatusTip("Run the matching phase on the document collection.")
self.run_matching_phase_action.triggered.connect(self.run_matching_phase_task)
self.run_matching_phase_action.setEnabled(False)
self._all_actions.append(self.run_matching_phase_action)
self.enable_collect_statistics_action = QAction("&Enable statistics", self)
self.enable_collect_statistics_action.setIcon(QIcon("aset_ui/resources/statistics.svg"))
self.enable_collect_statistics_action.setStatusTip("Enable collecting statistics.")
self.enable_collect_statistics_action.triggered.connect(self.enable_collect_statistics_task)
self.enable_collect_statistics_action.setEnabled(False)
self._all_actions.append(self.enable_collect_statistics_action)
self.disable_collect_statistics_action = QAction("&Disable statistics", self)
self.disable_collect_statistics_action.setIcon(QIcon("aset_ui/resources/statistics_incorrect.svg"))
self.disable_collect_statistics_action.setStatusTip("Disable collecting statistics.")
self.disable_collect_statistics_action.triggered.connect(self.disable_collect_statistics_task)
self._all_actions.append(self.disable_collect_statistics_action)
self.save_statistics_to_json_action = QAction("&Save statistics", self)
self.save_statistics_to_json_action.setIcon(QIcon("aset_ui/resources/statistics_save.svg"))
self.save_statistics_to_json_action.setStatusTip("Save the statistics to a .json file.")
self.save_statistics_to_json_action.triggered.connect(self.save_statistics_to_json_task)
self.save_statistics_to_json_action.setEnabled(False)
self._all_actions.append(self.save_statistics_to_json_action)
# set up the menu bar
self.menubar = self.menuBar()
self.menubar.setFont(MENU_FONT)
self.file_menu = self.menubar.addMenu("&File")
self.file_menu.setFont(MENU_FONT)
self.file_menu.addAction(self.exit_action)
self.document_base_menu = self.menubar.addMenu("&Document Base")
self.document_base_menu.setFont(MENU_FONT)
self.document_base_menu.addAction(self.show_document_base_creator_widget_action)
self.document_base_menu.addSeparator()
self.document_base_menu.addAction(self.load_document_base_from_bson_action)
self.document_base_menu.addAction(self.save_document_base_to_bson_action)
self.document_base_menu.addSeparator()
self.document_base_menu.addAction(self.save_table_to_csv_action)
self.document_base_menu.addSeparator()
self.document_base_menu.addAction(self.add_attribute_action)
self.document_base_menu.addAction(self.remove_attribute_action)
self.document_base_menu.addSeparator()
self.document_base_menu.addAction(self.forget_matches_for_attribute_action)
self.document_base_menu.addAction(self.forget_matches_action)
self.preprocessing_menu = self.menubar.addMenu("&Preprocessing")
self.preprocessing_menu.setFont(MENU_FONT)
self.preprocessing_menu.addAction(self.load_and_run_default_preprocessing_phase_action)
self.preprocessing_menu.addSeparator()
self.preprocessing_menu.addAction(self.load_preprocessing_phase_from_config_action)
self.preprocessing_menu.addAction(self.save_preprocessing_phase_to_config_action)
self.preprocessing_menu.addSeparator()
self.preprocessing_menu.addAction(self.run_preprocessing_phase_action)
self.matching_menu = self.menubar.addMenu("&Matching")
self.matching_menu.setFont(MENU_FONT)
self.matching_menu.addAction(self.load_and_run_default_matching_phase_action)
self.matching_menu.addSeparator()
self.matching_menu.addAction(self.load_matching_phase_from_config_action)
self.matching_menu.addAction(self.save_matching_phase_to_config_action)
self.matching_menu.addSeparator()
self.matching_menu.addAction(self.run_matching_phase_action)
self.statistics_menu = self.menubar.addMenu("&Statistics")
self.statistics_menu.setFont(MENU_FONT)
self.statistics_menu.addAction(self.enable_collect_statistics_action)
self.statistics_menu.addAction(self.disable_collect_statistics_action)
self.statistics_menu.addSeparator()
self.statistics_menu.addAction(self.save_statistics_to_json_action)
# start menu
self.start_menu_widget = QWidget()
self.start_menu_layout = QVBoxLayout(self.start_menu_widget)
self.start_menu_layout.setContentsMargins(0, 0, 0, 0)
self.start_menu_layout.setSpacing(30)
self.start_menu_layout.setAlignment(Qt.AlignmentFlag.AlignTop)
self.start_menu_widget.setMaximumWidth(400)
self.start_menu_header = QLabel("Welcome to ASET!")
self.start_menu_header.setFont(HEADER_FONT)
self.start_menu_layout.addWidget(self.start_menu_header)
self.start_menu_create_new_document_base_widget = QWidget()
self.start_menu_create_new_document_base_layout = QVBoxLayout(self.start_menu_create_new_document_base_widget)
self.start_menu_create_new_document_base_layout.setContentsMargins(0, 0, 0, 0)
self.start_menu_create_new_document_base_layout.setSpacing(10)
self.start_menu_layout.addWidget(self.start_menu_create_new_document_base_widget)
self.start_menu_create_new_document_base_subheader = QLabel("Create a new document base.")
self.start_menu_create_new_document_base_subheader.setFont(SUBHEADER_FONT)
self.start_menu_create_new_document_base_layout.addWidget(self.start_menu_create_new_document_base_subheader)
self.start_menu_create_new_document_base_wrapper_widget = QWidget()
self.start_menu_create_new_document_base_wrapper_layout = QHBoxLayout(
self.start_menu_create_new_document_base_wrapper_widget)
self.start_menu_create_new_document_base_wrapper_layout.setContentsMargins(0, 0, 0, 0)
self.start_menu_create_new_document_base_wrapper_layout.setSpacing(20)
self.start_menu_create_new_document_base_wrapper_layout.setAlignment(Qt.AlignmentFlag.AlignLeft)
self.start_menu_create_new_document_base_layout.addWidget(
self.start_menu_create_new_document_base_wrapper_widget)
self.start_menu_create_document_base_button = QPushButton()
self.start_menu_create_document_base_button.setFixedHeight(45)
self.start_menu_create_document_base_button.setFixedWidth(45)
self.start_menu_create_document_base_button.setIcon(QIcon("aset_ui/resources/two_documents.svg"))
self.start_menu_create_document_base_button.clicked.connect(self.show_document_base_creator_widget_task)
self.start_menu_create_new_document_base_wrapper_layout.addWidget(self.start_menu_create_document_base_button)
self.start_menu_create_document_base_label = QLabel(
"Create a new document base from a directory\nof .txt files and a list of attribute names.")
self.start_menu_create_document_base_label.setFont(LABEL_FONT)
self.start_menu_create_new_document_base_wrapper_layout.addWidget(self.start_menu_create_document_base_label)
self.start_menu_load_document_base_widget = QWidget()
self.start_menu_load_document_base_layout = QVBoxLayout(self.start_menu_load_document_base_widget)
self.start_menu_load_document_base_layout.setContentsMargins(0, 0, 0, 0)
self.start_menu_load_document_base_layout.setSpacing(10)
self.start_menu_layout.addWidget(self.start_menu_load_document_base_widget)
self.start_menu_load_document_base_subheader = QLabel("Load an existing document base.")
self.start_menu_load_document_base_subheader.setFont(SUBHEADER_FONT)
self.start_menu_load_document_base_layout.addWidget(self.start_menu_load_document_base_subheader)
self.start_menu_load_document_base_wrapper_widget = QWidget()
self.start_menu_load_document_base_wrapper_layout = QHBoxLayout(
self.start_menu_load_document_base_wrapper_widget)
self.start_menu_load_document_base_wrapper_layout.setContentsMargins(0, 0, 0, 0)
self.start_menu_load_document_base_wrapper_layout.setSpacing(20)
self.start_menu_load_document_base_wrapper_layout.setAlignment(Qt.AlignmentFlag.AlignLeft)
self.start_menu_load_document_base_layout.addWidget(self.start_menu_load_document_base_wrapper_widget)
self.start_menu_load_document_base_button = QPushButton()
self.start_menu_load_document_base_button.setFixedHeight(45)
self.start_menu_load_document_base_button.setFixedWidth(45)
self.start_menu_load_document_base_button.setIcon(QIcon("aset_ui/resources/folder.svg"))
self.start_menu_load_document_base_button.clicked.connect(self.load_document_base_from_bson_task)
self.start_menu_load_document_base_wrapper_layout.addWidget(self.start_menu_load_document_base_button)
self.start_menu_load_document_base_label = QLabel("Load an existing document base\nfrom a .bson file.")
self.start_menu_load_document_base_label.setFont(LABEL_FONT)
self.start_menu_load_document_base_wrapper_layout.addWidget(self.start_menu_load_document_base_label)
# main UI
self.central_widget = QWidget(self)
self.central_widget_layout = QHBoxLayout(self.central_widget)
self.central_widget_layout.setAlignment(Qt.AlignmentFlag.AlignCenter)
self.setCentralWidget(self.central_widget)
self.document_base_creator_widget = DocumentBaseCreatorWidget(self)
self.document_base_viewer_widget = DocumentBaseViewerWidget(self)
self.interactive_matching_widget = InteractiveMatchingWidget(self)
self.document_base_creator_widget.hide()
self.document_base_viewer_widget.hide()
self.interactive_matching_widget.hide()
self.central_widget_layout.addWidget(self.start_menu_widget)
self.central_widget_layout.update()
self.resize(1400, 800)
self.show()
logger.info("Initialized MainWindow.")
class MainWindow(QMainWindow):
def __init__(self):
"""MainWindow Constructor for Image Manager"""
super().__init__() # Constructor for QMainWindow
self.initializeUI()
def initializeUI(self):
"""Set up the GUI's main window."""
self.setWindowTitle("Image Manager")
self.setObjectName("ImageManager")
# Set up the main window, menu, and dock widgets
self.setUpMainWindow()
self.displayImagePreviewDock()
self.createActions()
self.createMenus()
self.show() # Display the main window
def setUpMainWindow(self):
"""Set up the application's main window containing the QListWidget."""
self.image_view_lw = ImageViewerListWidget(self)
self.setCentralWidget(self.image_view_lw)
def createActions(self):
"""Create the application's menu actions."""
# Create actions for File menu
self.import_act = QAction("Import Images...", self, triggered=self.importImages)
self.import_act.setShortcut("Ctrl+I")
self.preferences_act = QAction("Preferences...", self, triggered=self.showPreferencesDialog)
self.quit_act = QAction("Quit Task Manager", self, triggered=self.close)
self.quit_act.setShortcut(QKeySequence.StandardKey.Quit) # Ctrl+Q
# Create actions for Edit menu
self.select_all_act = QAction("Select All", self, triggered=self.image_view_lw.selectAll)
self.select_all_act.setShortcut(QKeySequence.StandardKey.SelectAll) # Ctrl+A
self.delete_act = QAction("Delete Images", self, triggered=self.deleteImages)
self.delete_act.setShortcut(QKeySequence.StandardKey.Delete) # Del
self.delete_act.setEnabled(False)
# Create actions for View menu
# Handle the visibility of the dock widget
self.show_dock_act = self.image_preview_dock.toggleViewAction()
self.show_dock_act.setText("Show Image View")
self.sort_ascend_act = QAction("Sort Ascending", self,
triggered=lambda: self.sortListItems(Qt.SortOrder.AscendingOrder))
self.sort_ascend_act.setEnabled(False)
self.sort_descend_act = QAction("Sort Descending", self,
triggered=lambda: self.sortListItems(Qt.SortOrder.DescendingOrder))
self.sort_descend_act.setEnabled(False)
self.fullscreen_act = QAction("Show Fullscreen", self,
triggered=self.displayFullScreen, checkable=True)
# Create actions for Help menu
self.about_act = QAction("About Image Manager",
self, triggered=self.showAboutDialog)
def createMenus(self):
"""Create the application's menu."""
self.file_menu = self.menuBar().addMenu("&File")
self.file_menu.addAction(self.import_act)
self.file_menu.addSeparator()
self.file_menu.addAction(self.preferences_act)
self.file_menu.addSeparator()
self.file_menu.addAction(self.quit_act)
self.edit_menu = self.menuBar().addMenu("&Edit")
self.edit_menu.addAction(self.select_all_act)
self.edit_menu.addSeparator()
self.edit_menu.addAction(self.delete_act)
self.view_menu = self.menuBar().addMenu("&View")
self.view_menu.addAction(self.show_dock_act)
self.view_menu.addSeparator()
self.view_menu.addAction(self.sort_ascend_act)
self.view_menu.addAction(self.sort_descend_act)
self.view_menu.addSeparator()
self.view_menu.addAction(self.fullscreen_act)
self.help_menu = self.menuBar().addMenu("&Help")
self.help_menu.addAction(self.about_act)
def displayImagePreviewDock(self):
"""Dock widget that displays a selected image in a scrollable
area and uses its file name as the dock's title."""
self.image_preview_dock = QDockWidget()
self.image_preview_dock.setObjectName("PreviewDock")
self.image_preview_dock.setWindowTitle("Show Image View")
self.image_preview_dock.setAllowedAreas(Qt.DockWidgetArea.RightDockWidgetArea)
self.display_image_label = QLabel()
self.display_image_label.setAlignment(Qt.AlignmentFlag.AlignCenter)
self.view_scroll_area = QScrollArea()
self.view_scroll_area.setMinimumWidth(300)
self.view_scroll_area.setWidgetResizable(True)
self.image_preview_dock.setWidget(self.view_scroll_area)
# Set initial location of dock widget
self.addDockWidget(Qt.DockWidgetArea.RightDockWidgetArea, self.image_preview_dock)
def displayFullScreen(self, state):
"""Check the state of checkable fullscreen_act. If True, show the
main window as fullscreen."""
if state: self.showFullScreen()
else: self.showNormal()
def importImages(self):
"""Placeholder method."""
pass
def deleteImages(self):
"""Placeholder method."""
pass
def showPreferencesDialog(self):
"""Placeholder method."""
pass
def showAboutDialog(self):
"""Placeholder method."""
pass
class MainWindow(QMainWindow):
def __init__(self):
""" MainWindow Constructor """
super().__init__()
self.initializeUI()
def initializeUI(self):
"""Initialize settings, call functions that define
UI elements, and display the main window."""
self.setMinimumSize(700, 400)
self.setWindowTitle("GIF and Image Viewer")
# Set up the main window, menu, and dock widget
self.setUpMainWindow()
self.displayFilesDock()
self.createActions()
self.createMenus()
self.createToolbar()
self.show() # Display the main window
def setUpMainWindow(self):
"""Set up the application's main window and widgets."""
self.movie = QMovie() # Create movie object
self.movie.stateChanged.connect(self.changeButtonStates)
self.media_label = QLabel() # Create label to place images/GIFs on
self.media_label.setPixmap(QPixmap("icons/image_label.png"))
self.media_label.setFrameShape(QFrame.Shape.StyledPanel)
self.media_label.setAlignment(Qt.AlignmentFlag.AlignCenter)
self.setCentralWidget(self.media_label)
def createActions(self):
"""Create the application's menu actions."""
# Create actions for File menu
self.open_act = QAction("Open...", self, triggered=self.openDirectory)
self.open_act.setShortcut(QKeySequence.StandardKey.Open)
self.quit_act = QAction("Quit Viewer", self, triggered=self.close)
self.quit_act.setShortcut(QKeySequence.StandardKey.Quit) # Ctrl+Q
# Create actions for View menu
# Handle the visibility of the dock widget
self.show_dock_act = self.files_dock.toggleViewAction()
self.show_dock_act.setText("Show Media Folder")
# Create actions for the toolbar (These actions could also be
# added to the GUI's menu bar or to a context menu)
self.play_act = QAction(QIcon("icons/play.png"),
"Play",
self,
triggered=self.startMovie)
self.pause_act = QAction(QIcon("icons/pause.png"),
"Pause",
self,
triggered=self.pauseMovie)
self.stop_act = QAction(QIcon("icons/stop.png"),
"Stop/Reset",
self,
triggered=self.stopMovie)
self.disableMovieButtons()
def createMenus(self):
"""Create the application's menu."""
# Make the toolbar appear in the main window for macOS users.
# More information about this in Chapter 2 - Building the Foundation for GUIs
if QSysInfo.productType() == "macos" or "osx":
self.menuBar().setNativeMenuBar(False)
self.file_menu = self.menuBar().addMenu("&File")
self.file_menu.addAction(self.open_act)
self.file_menu.addSeparator()
self.file_menu.addAction(self.quit_act)
self.view_menu = self.menuBar().addMenu("&View")
self.view_menu.addAction(self.show_dock_act)
def createToolbar(self):
"""Create the application's toolbar for playing GIFs."""
toolbar = self.addToolBar("GIF Controls Toolbar")
toolbar.setIconSize(QSize(24, 24))
# Add actions to the toolbar
toolbar.addAction(self.play_act)
toolbar.addAction(self.pause_act)
toolbar.addAction(self.stop_act)
def displayFilesDock(self):
"""Dock widget that displays the movie file location in a QLineEdit
widget, provides a button for opening directories with images and GIFs,
and shows the media from the selected folder in a QTreeWidget."""
self.files_dock = QDockWidget()
self.files_dock.setWindowTitle("Media Folder")
self.files_dock.setAllowedAreas(Qt.DockWidgetArea.LeftDockWidgetArea)
folder_label = QLabel("Media Location:")
# The QLineEdit widget is set to read-only as a quick way to display
# the folder path
self.folder_line = QLineEdit()
self.folder_line.setMinimumWidth(100)
self.folder_line.setReadOnly(True)
open_button = QPushButton("Open...")
open_button.clicked.connect(self.openDirectory)
folder_h_box = QHBoxLayout()
folder_h_box.addWidget(folder_label)
folder_h_box.addWidget(self.folder_line)
folder_h_box.addWidget(open_button)
self.files_tree = QTreeWidget()
self.files_tree.setHeaderLabel("Media Files")
self.files_tree.setColumnCount(1)
# Set up the dock's layout
dock_v_box = QVBoxLayout()
dock_v_box.addLayout(folder_h_box)
dock_v_box.addWidget(self.files_tree)
dock_container = QWidget()
dock_container.setLayout(dock_v_box)
self.files_dock.setWidget(dock_container)
self.addDockWidget(Qt.DockWidgetArea.LeftDockWidgetArea,
self.files_dock)
def openDirectory(self):
"""Open a QFileDialog for selecting a local directory. Only display
image and GIF files."""
directory = QFileDialog.getExistingDirectory(
self, "Choose Directory", "", QFileDialog.Option.ShowDirsOnly
) # Specify the file mode to only select directories
if directory:
self.movie.setFileName(directory)
# Check if image data is valid before playing
if self.movie.isValid():
# Use setMovie() to set the label's contents as the selected GIF
self.media_label.setMovie(self.movie)
self.startMovie() # Call method to begin playing
def startMovie(self):
"""Start playing the movie."""
self.movie.start()
def pauseMovie(self):
"""Pause the movie."""
self.movie.setPaused(True)
def stopMovie(self):
"""Stop playing the movie and reset the movie back to
the first frame."""
self.movie.stop()
self.movie.jumpToFrame(0)
def changeButtonStates(self, state):
"""Slot that handles enabling/disabling buttons in the toolbar
based on the state of QMovie."""
if state == QMovie.MovieState.Running:
# The animation begins playing once control returns to the event loop
self.play_act.setEnabled(False)
self.pause_act.setEnabled(True)
self.stop_act.setEnabled(True)
if state == QMovie.MovieState.Paused:
self.play_act.setEnabled(True)
self.pause_act.setEnabled(False)
self.stop_act.setEnabled(False)
if state == QMovie.MovieState.NotRunning:
self.play_act.setEnabled(True)
self.pause_act.setEnabled(False)
self.stop_act.setEnabled(False)
def disableMovieButtons(self):
"""Simple method to disable the movie buttons in the toolbar."""
self.play_act.setEnabled(False)
self.pause_act.setEnabled(False)
self.stop_act.setEnabled(False)
class PhotoEditorGUI(QMainWindow):
def __init__(self):
super().__init__()
self.initializeUI()
self.image = QImage()
def initializeUI(self):
self.setMinimumSize(300, 200)
self.setWindowTitle("Photo Editor")
self.showMaximized()
self.zoom_factor = 1
self.createMainLabel()
self.createEditingBar()
self.createMenu()
self.createToolBar()
self.show()
def createMenu(self):
"""Set up the menubar."""
# Actions for Photo Editor menu
about_act = QAction('About', self)
about_act.triggered.connect(self.aboutDialog)
self.exit_act = QAction(QIcon(os.path.join(icon_path, "exit.png")),
'Quit Photo Editor', self)
self.exit_act.setShortcut('Ctrl+Q')
self.exit_act.triggered.connect(self.close)
# Actions for File menu
self.new_act = QAction(QIcon(os.path.join(icon_path, "new.png")),
'New...')
self.open_act = QAction(QIcon(os.path.join(icon_path, "open.png")),
'Open...', self)
self.open_act.setShortcut('Ctrl+O')
self.open_act.triggered.connect(self.image_label.openImage)
self.print_act = QAction(QIcon(os.path.join(icon_path, "print.png")),
"Print...", self)
self.print_act.setShortcut('Ctrl+P')
#self.print_act.triggered.connect(self.printImage)
self.print_act.setEnabled(False)
self.save_act = QAction(QIcon(os.path.join(icon_path, "save.png")),
"Save...", self)
self.save_act.setShortcut('Ctrl+S')
self.save_act.triggered.connect(self.image_label.saveImage)
self.save_act.setEnabled(False)
# Actions for Edit menu
self.revert_act = QAction("Revert to Original", self)
self.revert_act.triggered.connect(self.image_label.revertToOriginal)
self.revert_act.setEnabled(False)
# Actions for Tools menu
self.crop_act = QAction(QIcon(os.path.join(icon_path, "crop.png")),
"Crop", self)
self.crop_act.setShortcut('Shift+X')
self.crop_act.triggered.connect(self.image_label.cropImage)
self.resize_act = QAction(QIcon(os.path.join(icon_path, "resize.png")),
"Resize", self)
self.resize_act.setShortcut('Shift+Z')
self.resize_act.triggered.connect(self.image_label.resizeImage)
self.rotate90_cw_act = QAction(
QIcon(os.path.join(icon_path, "rotate90_cw.png")), 'Rotate 90º CW',
self)
self.rotate90_cw_act.triggered.connect(
lambda: self.image_label.rotateImage90("cw"))
self.rotate90_ccw_act = QAction(
QIcon(os.path.join(icon_path, "rotate90_ccw.png")),
'Rotate 90º CCW', self)
self.rotate90_ccw_act.triggered.connect(
lambda: self.image_label.rotateImage90("ccw"))
self.flip_horizontal = QAction(
QIcon(os.path.join(icon_path, "flip_horizontal.png")),
'Flip Horizontal', self)
self.flip_horizontal.triggered.connect(
lambda: self.image_label.flipImage("horizontal"))
self.flip_vertical = QAction(
QIcon(os.path.join(icon_path, "flip_vertical.png")),
'Flip Vertical', self)
self.flip_vertical.triggered.connect(
lambda: self.image_label.flipImage('vertical'))
self.zoom_in_act = QAction(
QIcon(os.path.join(icon_path, "zoom_in.png")), 'Zoom In', self)
self.zoom_in_act.setShortcut('Ctrl++')
self.zoom_in_act.triggered.connect(lambda: self.zoomOnImage(1.25))
self.zoom_in_act.setEnabled(False)
self.zoom_out_act = QAction(
QIcon(os.path.join(icon_path, "zoom_out.png")), 'Zoom Out', self)
self.zoom_out_act.setShortcut('Ctrl+-')
self.zoom_out_act.triggered.connect(lambda: self.zoomOnImage(0.8))
self.zoom_out_act.setEnabled(False)
self.normal_size_Act = QAction("Normal Size", self)
self.normal_size_Act.setShortcut('Ctrl+=')
self.normal_size_Act.triggered.connect(self.normalSize)
self.normal_size_Act.setEnabled(False)
# Actions for Views menu
#self.tools_menu_act = QAction(QIcon(os.path.join(icon_path, "edit.png")),'Tools View...', self, checkable=True)
# Create menubar
menu_bar = self.menuBar()
menu_bar.setNativeMenuBar(False)
# Create Photo Editor menu and add actions
main_menu = menu_bar.addMenu('Photo Editor')
main_menu.addAction(about_act)
main_menu.addSeparator()
main_menu.addAction(self.exit_act)
# Create file menu and add actions
file_menu = menu_bar.addMenu('File')
file_menu.addAction(self.open_act)
file_menu.addAction(self.save_act)
file_menu.addSeparator()
file_menu.addAction(self.print_act)
edit_menu = menu_bar.addMenu('Edit')
edit_menu.addAction(self.revert_act)
tool_menu = menu_bar.addMenu('Tools')
tool_menu.addAction(self.crop_act)
tool_menu.addAction(self.resize_act)
tool_menu.addSeparator()
tool_menu.addAction(self.rotate90_cw_act)
tool_menu.addAction(self.rotate90_ccw_act)
tool_menu.addAction(self.flip_horizontal)
tool_menu.addAction(self.flip_vertical)
tool_menu.addSeparator()
tool_menu.addAction(self.zoom_in_act)
tool_menu.addAction(self.zoom_out_act)
tool_menu.addAction(self.normal_size_Act)
views_menu = menu_bar.addMenu('Views')
views_menu.addAction(self.tools_menu_act)
def createToolBar(self):
"""Set up the toolbar."""
tool_bar = QToolBar("Main Toolbar")
tool_bar.setIconSize(QSize(26, 26))
self.addToolBar(tool_bar)
# Add actions to the toolbar
tool_bar.addAction(self.open_act)
tool_bar.addAction(self.save_act)
tool_bar.addAction(self.print_act)
tool_bar.addAction(self.exit_act)
tool_bar.addSeparator()
tool_bar.addAction(self.crop_act)
tool_bar.addAction(self.resize_act)
tool_bar.addSeparator()
tool_bar.addAction(self.rotate90_ccw_act)
tool_bar.addAction(self.rotate90_cw_act)
tool_bar.addAction(self.flip_horizontal)
tool_bar.addAction(self.flip_vertical)
tool_bar.addSeparator()
tool_bar.addAction(self.zoom_in_act)
tool_bar.addAction(self.zoom_out_act)
def createEditingBar(self):
"""Create dock widget for editing tools."""
#TODO: Add a tab widget for the different editing tools
self.editing_bar = QDockWidget("Tools")
self.editing_bar.setAllowedAreas(
Qt.DockWidgetAreas.LeftDockWidgetArea
| Qt.DockWidgetAreas.RightDockWidgetArea)
self.editing_bar.setMinimumWidth(90)
# Create editing tool buttons
filters_label = QLabel("Filters")
convert_to_grayscale = QToolButton()
convert_to_grayscale.setIcon(
QIcon(os.path.join(icon_path, "grayscale.png")))
convert_to_grayscale.clicked.connect(self.image_label.convertToGray)
convert_to_RGB = QToolButton()
convert_to_RGB.setIcon(QIcon(os.path.join(icon_path, "rgb.png")))
convert_to_RGB.clicked.connect(self.image_label.convertToRGB)
convert_to_sepia = QToolButton()
convert_to_sepia.setIcon(QIcon(os.path.join(icon_path, "sepia.png")))
convert_to_sepia.clicked.connect(self.image_label.convertToSepia)
change_hue = QToolButton()
change_hue.setIcon(QIcon(os.path.join(icon_path, "")))
change_hue.clicked.connect(self.image_label.changeHue)
brightness_label = QLabel("Brightness")
self.brightness_slider = QSlider(Qt.Orientations.Horizontal)
self.brightness_slider.setRange(-255, 255)
self.brightness_slider.setTickInterval(35)
self.brightness_slider.setTickPosition(QSlider.TickPosition.TicksAbove)
self.brightness_slider.valueChanged.connect(
self.image_label.changeBrighteness)
contrast_label = QLabel("Contrast")
self.contrast_slider = QSlider(Qt.Orientations.Horizontal)
self.contrast_slider.setRange(-255, 255)
self.contrast_slider.setTickInterval(35)
self.contrast_slider.setTickPosition(QSlider.TickPosition.TicksAbove)
self.contrast_slider.valueChanged.connect(
self.image_label.changeContrast)
# Set layout for dock widget
editing_grid = QGridLayout()
#editing_grid.addWidget(filters_label, 0, 0, 0, 2, Qt.AlignTop)
editing_grid.addWidget(convert_to_grayscale, 1, 0)
editing_grid.addWidget(convert_to_RGB, 1, 1)
editing_grid.addWidget(convert_to_sepia, 2, 0)
editing_grid.addWidget(change_hue, 2, 1)
editing_grid.addWidget(brightness_label, 3, 0)
editing_grid.addWidget(self.brightness_slider, 4, 0, 1, 0)
editing_grid.addWidget(contrast_label, 5, 0)
editing_grid.addWidget(self.contrast_slider, 6, 0, 1, 0)
editing_grid.setRowStretch(7, 10)
container = QWidget()
container.setLayout(editing_grid)
self.editing_bar.setWidget(container)
self.addDockWidget(Qt.DockWidgetAreas.LeftDockWidgetArea,
self.editing_bar)
self.tools_menu_act = self.editing_bar.toggleViewAction()
def createMainLabel(self):
"""Create an instance of the imageLabel class and set it
as the main window's central widget."""
self.image_label = imageLabel(self)
self.image_label.resize(self.image_label.pixmap().size())
self.scroll_area = QScrollArea()
self.scroll_area.setBackgroundRole(QPalette.ColorRole.Dark)
self.scroll_area.setAlignment(Qt.Alignment.AlignCenter)
#self.scroll_area.setWidgetResizable(False)
#scroll_area.setMinimumSize(800, 800)
self.scroll_area.setWidget(self.image_label)
#self.scroll_area.setVisible(False)
self.setCentralWidget(self.scroll_area)
#self.resize(QApplication.primaryScreen().availableSize() * 3 / 5)
def updateActions(self):
"""Update the values of menu and toolbar items when an image
is loaded."""
self.save_act.setEnabled(True)
self.revert_act.setEnabled(True)
self.zoom_in_act.setEnabled(True)
self.zoom_out_act.setEnabled(True)
self.normal_size_Act.setEnabled(True)
def zoomOnImage(self, zoom_value):
"""Zoom in and zoom out."""
self.zoom_factor *= zoom_value
self.image_label.resize(self.zoom_factor *
self.image_label.pixmap().size())
self.adjustScrollBar(self.scroll_area.horizontalScrollBar(),
zoom_value)
self.adjustScrollBar(self.scroll_area.verticalScrollBar(), zoom_value)
self.zoom_in_act.setEnabled(self.zoom_factor < 4.0)
self.zoom_out_act.setEnabled(self.zoom_factor > 0.333)
def normalSize(self):
"""View image with its normal dimensions."""
self.image_label.adjustSize()
self.zoom_factor = 1.0
def adjustScrollBar(self, scroll_bar, value):
"""Adjust the scrollbar when zooming in or out."""
scroll_bar.setValue(
int(value * scroll_bar.value()) +
((value - 1) * scroll_bar.pageStep() / 2))
def aboutDialog(self):
QMessageBox.about(
self, "About Photo Editor",
"Photo Editor\nVersion 0.2\n\nCreated by Joshua Willman")
def keyPressEvent(self, event):
"""Handle key press events."""
if event.key() == Qt.Key_Escape:
self.close()
if event.key() == Qt.Key_F1: # fn + F1 on Mac
if self.isMaximized():
self.showNormal()
else:
self.showMaximized()
def closeEvent(self, event):
pass
class VideoWindow(QMainWindow):
def __init__(self, parent=None):
super(VideoWindow, self).__init__(parent)
self.setWindowTitle("StudioProject")
self.statusBar = QStatusBar()
self.setStatusBar(self.statusBar)
self.gScene = QGraphicsScene(self)
self.gView = GraphicView(self.gScene, self)
self.gView.viewport().setAttribute(
Qt.WidgetAttribute.WA_AcceptTouchEvents, False)
# self.gView.setBackgroundBrush(QBrush(Qt.black))
self.videoStartDatetime = None
self.videoCurrentDatetime = None
self.projectFile = ''
self.graphicsFile = ''
self.videoFile = ''
self.obsTb = ObsToolbox(self)
# # ===================== Setting video item ==============================
# self.videoItem = QGraphicsVideoItem()
# self.videoItem.setAspectRatioMode(Qt.KeepAspectRatio)
# self.gScene.addItem(self.videoItem)
# self.videoItem.mouseMoveEvent = self.gView.mouseMoveEvent
self.mediaPlayer = QMediaPlayer(self)
# self.mediaPlayer.setVideoOutput(self.videoItem)
self.mediaPlayer.playbackStateChanged.connect(self.mediaStateChanged)
self.mediaPlayer.positionChanged.connect(self.positionChanged)
self.mediaPlayer.durationChanged.connect(self.durationChanged)
self.mediaPlayer.errorOccurred.connect(self.handleError)
# self.mediaPlayer.setMuted(True)
# self.mediaPlayer.setNotifyInterval(100)
self.playButton = QPushButton()
self.playButton.setEnabled(False)
self.playButton.setIcon(self.style().standardIcon(
QStyle.StandardPixmap.SP_MediaPlay))
self.playButton.clicked.connect(self.play)
self.changePlayRateBtn = QPushButton('1x')
self.changePlayRateBtn.setFixedWidth(40)
# self.incrPlayRateBtn.setEnabled(False)
self.changePlayRateBtn.clicked.connect(self.changePlayRate)
self.positionSlider = QSlider(Qt.Orientation.Horizontal)
self.positionSlider.setRange(0, 0)
self.positionSlider.sliderMoved.connect(self.setPosition)
self.timerLabel = QLabel()
self.timerLabel.setText('--:--:--')
self.timerLabel.setFixedWidth(58)
self.dateLabel = QLabel()
self.dateLabel.setText('Video date: --')
self.statusBar.addPermanentWidget(self.dateLabel)
# Create open action
self.openVideoAction = QAction(QIcon('icons/video-file.png'),
'Open video', self)
self.openVideoAction.setShortcut('Ctrl+O')
self.openVideoAction.setStatusTip('Open video file')
self.openVideoAction.triggered.connect(self.openVideoFile)
# Create observation action
obsTbAction = QAction(QIcon('icons/checklist.png'),
'Observation toolbox', self)
obsTbAction.setStatusTip('Open observation toolbox')
obsTbAction.triggered.connect(self.openObsToolbox)
self.drawPointAction = QAction(QIcon('icons/drawPoint.png'),
'Draw point', self)
self.drawPointAction.setStatusTip('Draw point over the video')
self.drawPointAction.setCheckable(True)
self.drawPointAction.setEnabled(False)
self.drawPointAction.triggered.connect(self.drawingClick)
self.drawLineAction = QAction(QIcon('icons/drawLine.png'), 'Draw line',
self)
self.drawLineAction.setStatusTip('Draw line over the video')
self.drawLineAction.setCheckable(True)
self.drawLineAction.setEnabled(False)
self.drawLineAction.triggered.connect(self.drawingClick)
self.drawZoneAction = QAction(QIcon('icons/drawZone.png'), 'Draw zone',
self)
self.drawZoneAction.setStatusTip('Draw zone over the video')
self.drawZoneAction.setCheckable(True)
self.drawZoneAction.setEnabled(False)
self.drawZoneAction.triggered.connect(self.drawingClick)
self.maskGenAction = QAction(QIcon('icons/mask.png'),
'Generate mask file', self)
self.maskGenAction.setStatusTip(
'Generate mask file for TrafficIntelligence')
self.maskGenAction.setCheckable(True)
self.maskGenAction.setEnabled(False)
self.maskGenAction.triggered.connect(self.generateMask)
actionGroup = QActionGroup(self)
actionGroup.addAction(self.drawPointAction)
actionGroup.addAction(self.drawLineAction)
actionGroup.addAction(self.drawZoneAction)
openProjectAction = QAction(QIcon('icons/open-project.png'),
'Open project', self)
openProjectAction.setStatusTip('Open project')
openProjectAction.triggered.connect(self.openProject)
self.saveProjectAction = QAction(QIcon('icons/save-project.png'),
'Save project', self)
self.saveProjectAction.setStatusTip('Save project')
self.saveProjectAction.setEnabled(False)
self.saveProjectAction.triggered.connect(self.saveProject)
self.saveGraphAction = QAction(QIcon('icons/save-graphics.png'),
'Save graphics', self)
self.saveGraphAction.setStatusTip('Save graphics to database')
self.saveGraphAction.setEnabled(False)
self.saveGraphAction.triggered.connect(self.saveGraphics)
self.loadGraphAction = QAction(QIcon('icons/folders.png'),
'Load graphics', self)
self.loadGraphAction.setStatusTip('Load graphics from database')
self.loadGraphAction.setEnabled(False)
self.loadGraphAction.triggered.connect(self.loadGraphics)
# Create exit action
exitAction = QAction(QIcon('icons/close.png'), 'Exit', self)
exitAction.setShortcut('Ctrl+Q')
exitAction.setStatusTip('Exit application')
exitAction.triggered.connect(self.exitCall) # self.exitCall
# Create menu bar and add action
# menuBar = self.menuBar()
# menuBar.setNativeMenuBar(False)
# fileMenu = menuBar.addMenu('&File')
# fileMenu.addAction(openVideoAction)
# fileMenu.addAction(obsTbAction)
# fileMenu.addAction(exitAction)
self.toolbar = self.addToolBar('Tools')
self.toolbar.setIconSize(QSize(24, 24))
self.toolbar.addAction(openProjectAction)
self.toolbar.addAction(self.saveProjectAction)
self.toolbar.addAction(self.openVideoAction)
# self.toolbar.insertSeparator(self.loadGraphAction)
# self.toolbar.addAction(self.loadGraphAction)
# self.toolbar.addAction(self.saveGraphAction)
# self.toolbar.addAction(self.drawPointAction)
# self.toolbar.addAction(self.drawLineAction)
# self.toolbar.addAction(self.drawZoneAction)
self.toolbar.addAction(self.maskGenAction)
# self.toolbar.insertSeparator(self.drawPointAction)
self.toolbar.insertSeparator(obsTbAction)
self.toolbar.addAction(obsTbAction)
self.toolbar.insertSeparator(exitAction)
self.toolbar.addAction(exitAction)
# Create a widget for window contents
wid = QWidget(self)
self.setCentralWidget(wid)
# Create layouts to place inside widget
controlLayout = QHBoxLayout()
controlLayout.setContentsMargins(0, 0, 0, 0)
# controlLayout.addWidget(self.decrPlayRateBtn)
controlLayout.addWidget(self.playButton)
controlLayout.addWidget(self.changePlayRateBtn)
controlLayout.addWidget(self.timerLabel)
controlLayout.addWidget(self.positionSlider)
# controlLayout.addWidget(self.durationLabel)
layout = QVBoxLayout()
layout.addWidget(self.gView)
layout.addLayout(controlLayout)
# Set widget to contain window contents
wid.setLayout(layout)
# def showEvent(self, event):
# self.gView.fitInView(self.videoItem, Qt.KeepAspectRatio)
def openVideoFile(self):
# self.mediaPlayer.setMedia(QMediaContent())
if self.sender() == self.openVideoAction:
self.videoFile, _ = QFileDialog.getOpenFileName(
self, "Open video", QDir.homePath())
# if self.videoFile != '':
# self.setWindowTitle('{} - {}'.format(os.path.basename(self.videoFile),
# os.path.basename(self.projectFile)))
if self.videoFile != '':
self.setWindowTitle('{} - {}'.format(
os.path.basename(self.videoFile),
os.path.basename(self.projectFile)))
self.saveProjectAction.setEnabled(True)
self.maskGenAction.setEnabled(True)
# self.loadGraphAction.setEnabled(True)
# self.saveGraphAction.setEnabled(True)
# self.drawPointAction.setEnabled(True)
# self.drawLineAction.setEnabled(True)
# self.drawZoneAction.setEnabled(True)
creation_datetime, width, height = getVideoMetadata(self.videoFile)
self.videoStartDatetime = self.videoCurrentDatetime = creation_datetime
self.dateLabel.setText(creation_datetime.strftime('%a, %b %d, %Y'))
self.gView.setSceneRect(0, 0, width, height)
self.videoItem = QGraphicsVideoItem()
self.videoItem.setAspectRatioMode(
Qt.AspectRatioMode.KeepAspectRatio)
self.gScene.addItem(self.videoItem)
self.videoItem.mouseMoveEvent = self.gView.mouseMoveEvent
self.videoItem.setSize(QSizeF(width, height))
self.mediaPlayer.setVideoOutput(self.videoItem)
self.mediaPlayer.setSource(QUrl.fromLocalFile(self.videoFile))
self.gView.labelSize = width / 50
self.playButton.setEnabled(True)
# self.gView.setViewport(QOpenGLWidget())
self.mediaPlayer.pause()
def exitCall(self):
# sys.exit(app.exec())
# self.mediaPlayer.pause()
self.close()
def play(self):
# self.gView.fitInView(self.videoItem, Qt.KeepAspectRatio)
if self.mediaPlayer.playbackState(
) == QMediaPlayer.PlaybackState.PlayingState:
self.mediaPlayer.pause()
else:
self.mediaPlayer.play()
def changePlayRate(self):
if self.mediaPlayer.playbackRate() < 2:
r = self.mediaPlayer.playbackRate() + 0.5
self.mediaPlayer.setPlaybackRate(r)
self.changePlayRateBtn.setText('{:g}x'.format(r))
self.statusBar.showMessage('Play back rate = {:g}x'.format(r),
2000)
elif self.mediaPlayer.playbackRate() == 2:
self.mediaPlayer.setPlaybackRate(1)
self.changePlayRateBtn.setText('{}x'.format(1))
self.statusBar.showMessage('Play back rate = {}x'.format(1), 2000)
def mediaStateChanged(self, state):
if self.mediaPlayer.playbackState(
) == QMediaPlayer.PlaybackState.PlayingState:
self.playButton.setIcon(self.style().standardIcon(
QStyle.StandardPixmap.SP_MediaPause))
else:
self.playButton.setIcon(self.style().standardIcon(
QStyle.StandardPixmap.SP_MediaPlay))
def positionChanged(self, position):
self.positionSlider.setValue(position)
s, m, h = self.convertMillis(position)
self.videoCurrentDatetime = self.videoStartDatetime + \
timedelta(hours=h, minutes=m, seconds=s)
self.timerLabel.setText('{:02d}:{:02d}:{:02d}'.format(
self.videoCurrentDatetime.time().hour,
self.videoCurrentDatetime.time().minute,
self.videoCurrentDatetime.time().second))
def durationChanged(self, duration):
self.positionSlider.setRange(0, duration)
# s, m, h = self.convertMillis(duration)
# self.durationLabel.setText('{:02d}:{:02d}'.format(m, s))
def setPosition(self, position):
self.mediaPlayer.setPosition(position)
def handleError(self):
self.playButton.setEnabled(False)
# self.errorLabel.setText("Error: " + self.mediaPlayer.errorString())
def openObsToolbox(self):
if not self.obsTb.isVisible():
self.obsTb.show()
def drawingClick(self):
# if self.sender() == self.drawLineAction:
# self.labelingAction.setChecked(False)
# else:
# self.drawLineAction.setChecked(False)
cursor = QCursor(Qt.CursorShape.CrossCursor)
self.gView.setCursor(cursor)
def generateMask(self):
if not self.sender().isChecked():
self.gView.unsetCursor()
return
cursor = QCursor(Qt.CursorShape.CrossCursor)
self.gView.setCursor(cursor)
# dbfilename = self.obsTb.dbFilename
# if dbfilename != None:
# self.session = connectDatabase(dbfilename)
# else:
# msg = QMessageBox()
# msg.setIcon(QMessageBox.Information)
# msg.setText('The database file is not defined.')
# msg.setInformativeText('In order to set the database file, open the Observation Toolbox')
# msg.setIcon(QMessageBox.Critical)
# msg.exec_()
# return
# if self.gView.unsavedLines == [] and self.gView.unsavedZones == [] and \
# self.gView.unsavedPoints == []:
# QMessageBox.information(self, 'Save', 'There is no polygon to generate mask!')
# return
def saveMaskFile(self):
creation_datetime, width, height = getVideoMetadata(self.videoFile)
item = self.gView.gPolyItem #self.gView.unsavedZones[0]
mask_polygon = item.polygon()
xy = []
for p in mask_polygon:
xy.append((p.x(), p.y()))
img = Image.new('RGB', (width, height), color='black')
img1 = ImageDraw.Draw(img)
img1.polygon(xy, fill="white", outline="white")
fileName, _ = QFileDialog.getSaveFileName(self, "Open database file",
QDir.homePath(),
"PNG files (*.png)")
if fileName != '':
img.save(fileName)
self.gView.scene().removeItem(item)
self.gView.unsavedZones = []
def openProject(self):
self.projectFile, _ = QFileDialog.getOpenFileName(
self, "Open project file", QDir.homePath(), "Project (*.prj)")
if self.projectFile == '':
return
self.saveProjectAction.setEnabled(True)
self.maskGenAction.setEnabled(True)
# self.loadGraphAction.setEnabled(True)
# self.saveGraphAction.setEnabled(True)
# self.drawPointAction.setEnabled(True)
# self.drawLineAction.setEnabled(True)
# self.drawZoneAction.setEnabled(True)
tree = ET.parse(self.projectFile)
root = tree.getroot()
gItems = []
for elem in root:
subEelTexts = {}
for subelem in elem:
subEelTexts[subelem.tag] = subelem.text
gItems.append([elem.tag, subEelTexts])
for key in gItems:
if key[0] == 'database':
item = key[1]
if item['fileName'] is not None:
self.obsTb.dbFilename = item['fileName']
self.obsTb.opendbFile()
elif key[0] == 'video':
item = key[1]
if item['fileName'] is not None:
self.videoFile = item['fileName']
self.openVideoFile()
self.mediaPlayer.setPosition(int(item['sliderValue']))
if item['fileName'] is not None:
self.loadGraphics()
elif key[0] == 'trajectory':
item = key[1]
if item['metadata'] != None:
self.obsTb.mdbFileLedit.setText(item['metadata'])
self.obsTb.openMdbFile()
self.obsTb.siteNameCombobx.setCurrentIndex(
int(item['site']))
self.obsTb.camViewCombobx.setCurrentIndex(
int(item['cam_view']))
self.obsTb.trjDbCombobx.setCurrentIndex(
int(item['traj_db']))
elif key[0] == 'window':
item = key[1]
x, y = item['mainWin_pos'].split(',')
w, h = item['mainWin_size'].split(',')
self.setGeometry(int(x), int(y), int(w), int(h))
if item['obsTbx_open'] == 'True':
self.obsTb.show()
x, y = item['obsTbx_pos'].split(',')
w, h = item['obsTbx_size'].split(',')
self.obsTb.setGeometry(int(x), int(y), int(w), int(h))
# self.setWindowTitle('{} - {}'.format(os.path.basename(self.videoFile),
# os.path.basename(self.projectFile)))
def saveProject(self):
if self.projectFile == '':
fileDir = QDir.homePath()
else:
fileDir = self.projectFile
self.projectFile, _ = QFileDialog.getSaveFileName(
self, "Save project file", fileDir, "Project (*.prj)")
# fileName = "/Users/Abbas/project.xml"
if self.projectFile == '':
return
file = QFile(self.projectFile)
if (not file.open(QIODevice.OpenModeFlag.WriteOnly
| QIODevice.OpenModeFlag.Text)):
return
xmlWriter = QXmlStreamWriter(file)
xmlWriter.setAutoFormatting(True)
xmlWriter.writeStartDocument()
xmlWriter.writeStartElement('project')
xmlWriter.writeStartElement('database')
xmlWriter.writeTextElement("fileName", self.obsTb.dbFilename)
xmlWriter.writeEndElement()
xmlWriter.writeStartElement('video')
xmlWriter.writeTextElement(
"fileName",
self.videoFile) #mediaPlayer.media().canonicalUrl().path())
xmlWriter.writeTextElement("sliderValue",
str(self.mediaPlayer.position()))
xmlWriter.writeEndElement()
xmlWriter.writeStartElement('trajectory')
xmlWriter.writeTextElement("metadata", self.obsTb.mdbFileLedit.text())
xmlWriter.writeTextElement(
"site", str(self.obsTb.siteNameCombobx.currentIndex()))
xmlWriter.writeTextElement(
"cam_view", str(self.obsTb.camViewCombobx.currentIndex()))
xmlWriter.writeTextElement("traj_db",
str(self.obsTb.trjDbCombobx.currentIndex()))
xmlWriter.writeEndElement()
xmlWriter.writeStartElement('window')
xmlWriter.writeTextElement(
"mainWin_size", "{},{}".format(int(self.width()),
int(self.height())))
xmlWriter.writeTextElement(
"mainWin_pos", "{},{}".format(int(self.x()), int(self.y())))
xmlWriter.writeTextElement("obsTbx_open", str(self.obsTb.isVisible()))
xmlWriter.writeTextElement(
"obsTbx_size", "{},{}".format(int(self.obsTb.width()),
int(self.obsTb.height())))
xmlWriter.writeTextElement(
"obsTbx_pos", "{},{}".format(int(self.obsTb.x()),
int(self.obsTb.y())))
xmlWriter.writeEndElement()
xmlWriter.writeEndElement()
self.setWindowTitle('{} - {}'.format(
os.path.basename(self.videoFile),
os.path.basename(self.projectFile)))
if self.obsTb.dbFilename != None:
self.obsTb.setWindowTitle('{} - {}'.format(
os.path.basename(self.obsTb.dbFilename),
os.path.basename(self.projectFile)))
def saveGraphics(self):
dbfilename = self.obsTb.dbFilename
if dbfilename != None:
self.session = connectDatabase(dbfilename)
else:
msg = QMessageBox()
msg.setIcon(QMessageBox.Information)
msg.setText('The database file is not defined.')
msg.setInformativeText(
'In order to set the database file, open the Observation Toolbox'
)
msg.setIcon(QMessageBox.Critical)
msg.exec_()
return
if self.gView.unsavedLines == [] and self.gView.unsavedZones == [] and \
self.gView.unsavedPoints == []:
QMessageBox.information(self, 'Save',
'No new graphical items to save!')
return
for item in self.gView.unsavedLines:
x1 = round(item.line().x1(), 2)
y1 = round(item.line().y1(), 2)
x2 = round(item.line().x2(), 2)
y2 = round(item.line().y2(), 2)
line = Line(None, None, x1, y1, x2, y2)
self.session.add(line)
self.session.flush()
label = self.generate_itemGroup([x1, x2], [y1, y2], line.idx)
self.gView.scene().addItem(label)
for item in self.gView.unsavedZones:
xs = []
ys = []
for p in item.polygon():
xs.append(round(p.x(), 2))
ys.append(round(p.y(), 2))
zone = Zone(None, None, xs, ys)
self.session.add(zone)
self.session.flush()
label = self.generate_itemGroup(xs, ys, zone.idx)
self.gView.scene().addItem(label)
for item in self.gView.unsavedPoints:
x = round(item.rect().center().x(), 2)
y = round(item.rect().center().y(), 2)
point = Point(x, y)
self.session.add(point)
self.session.flush()
label = self.generate_itemGroup([x], [y], point.idx)
self.gView.scene().removeItem(item)
self.gView.scene().addItem(label)
QMessageBox.information(
self, 'Save',
'{} point(s), {} line(s) and {} zone(s) saved to database successfully!'
.format(len(self.gView.unsavedPoints),
len(self.gView.unsavedLines),
len(self.gView.unsavedZones)))
self.gView.unsavedLines = []
self.gView.unsavedZones = []
self.gView.unsavedPoints = []
self.session.commit()
def generate_itemGroup(self, xs, ys, label, type):
gItemGroup = QGraphicsItemGroup()
pointBbx = QRectF()
pointBbx.setSize(QSizeF(self.gView.labelSize, self.gView.labelSize))
textLabel = QGraphicsTextItem(label)
if len(xs) == 1:
pointBbx.moveCenter(QPointF(xs[0], ys[0]))
textLabel.setPos(xs[0] - (textLabel.boundingRect().width() / 2),
ys[0] - (textLabel.boundingRect().height() / 2))
pointShape = QGraphicsEllipseItem(pointBbx)
shapeColor = Qt.GlobalColor.white
textColor = Qt.GlobalColor.black
tooltip = 'P{}:{}'
elif len(xs) == 2:
pointBbx.moveCenter(QPointF(xs[1], ys[1]))
textLabel.setPos(xs[1] - (textLabel.boundingRect().width() / 2),
ys[1] - (textLabel.boundingRect().height() / 2))
r, g, b = np.random.choice(range(256), size=3)
line_item = QGraphicsLineItem(xs[0], ys[0], xs[1], ys[1])
line_item.setPen(
QPen(QColor(r, g, b, 128), self.gView.labelSize / 6))
gItemGroup.addToGroup(line_item)
# line_end = QGraphicsEllipseItem(xs[1], ys[1],
# int(self.gView.labelSize/3), int(self.gView.labelSize/3))
# line_end.setPen(QPen(QColor(r, g, b), 0.5))
# line_end.setBrush(QBrush(QColor(r, g, b)))
# gItemGroup.addToGroup(line_end)
pointShape = QGraphicsEllipseItem(pointBbx)
shapeColor = QColor(r, g, b, 128)
textColor = Qt.GlobalColor.black
tooltip = 'L{}:{}'
# textLabel.setRotation(np.arctan((ys[1] - ys[0])/(xs[1] - xs[0]))*(180/3.14))
else:
pointBbx.moveCenter(QPointF(np.mean(xs), np.mean(ys)))
textLabel.setPos(
np.mean(xs) - (textLabel.boundingRect().width() / 2),
np.mean(ys) - (textLabel.boundingRect().height() / 2))
points = [QPointF(x, y) for x, y in zip(xs, ys)]
polygon = QPolygonF(points)
r, g, b = np.random.choice(range(256), size=3)
zone_item = QGraphicsPolygonItem(polygon)
zone_item.setPen(QPen(QColor(r, g, b), self.gView.labelSize / 10))
zone_item.setBrush(QBrush(QColor(r, g, b, 40)))
gItemGroup.addToGroup(zone_item)
pointShape = QGraphicsRectItem(pointBbx)
shapeColor = Qt.GlobalColor.darkBlue
textColor = Qt.GlobalColor.white
tooltip = 'Z{}:{}'
pointShape.setPen(QPen(Qt.GlobalColor.white, 0.5))
pointShape.setBrush(QBrush(shapeColor))
# self.gView.scene().addEllipse(pointBbx, QPen(Qt.white, 0.5), QBrush(Qt.black))
gItemGroup.setToolTip(tooltip.format(label, type))
gItemGroup.addToGroup(pointShape)
labelFont = QFont()
labelFont.setPointSize(round(self.gView.labelSize / 2))
labelFont.setBold(True)
textLabel.setFont(labelFont)
textLabel.setDefaultTextColor(textColor)
gItemGroup.addToGroup(textLabel)
return gItemGroup
def loadGraphics(self):
dbfilename = self.obsTb.dbFilename
if dbfilename != None:
self.session = connectDatabase(dbfilename)
else:
msg = QMessageBox()
# msg.setIcon(QMessageBox.Icon.Information)
msg.setText('The database file is not defined.')
msg.setInformativeText(
'In order to set the database file, open the Observation Toolbox'
)
msg.setIcon(QMessageBox.Icon.Critical)
msg.exec()
return
for gitem in self.gView.scene().items():
if isinstance(gitem, QGraphicsItemGroup):
self.gView.scene().removeItem(gitem)
q_line = self.session.query(Line)
q_zone = self.session.query(Zone)
if q_line.all() == [] and q_zone.all() == []:
QMessageBox.information(self, 'Warning!',
'There is no graphics to load!')
return
line_items = []
for line in q_line:
p1 = line.points[0]
p2 = line.points[1]
if line.type != None:
lineType = line.type.name
else:
lineType = None
gItmGroup = self.generate_itemGroup([p1.x, p2.x], [p1.y, p2.y],
str(line.idx), lineType)
self.gScene.addItem(gItmGroup)
line_items.append(str(line.idx))
self.obsTb.line_list_wdgt.clear()
self.obsTb.line_list_wdgt.addItems(line_items)
self.obsTb.line_list_wdgt.setCurrentRow(0)
self.obsTb.line_newRecButton.setEnabled(False)
self.obsTb.line_saveButton.setEnabled(True)
self.obsTb.line_saveButton.setText('Edit line(s)')
self.obsTb.line_saveButton.setIcon(QIcon('icons/edit.png'))
zone_items = []
for zone in q_zone:
if zone.type != None:
zoneType = zone.type.name
else:
zoneType = None
gItmGroup = self.generate_itemGroup(
[point.x for point in zone.points],
[point.y for point in zone.points], str(zone.idx), zoneType)
self.gScene.addItem(gItmGroup)
zone_items.append(str(zone.idx))
self.obsTb.zone_list_wdgt.clear()
self.obsTb.zone_list_wdgt.addItems(zone_items)
self.obsTb.zone_list_wdgt.setCurrentRow(0)
self.obsTb.zone_newRecButton.setEnabled(False)
self.obsTb.zone_saveButton.setEnabled(True)
self.obsTb.zone_saveButton.setText('Edit zone(s)')
self.obsTb.zone_saveButton.setIcon(QIcon('icons/edit.png'))
@staticmethod
def convertMillis(millis):
seconds = int(millis / 1000) % 60
minutes = int(millis / (1000 * 60)) % 60
hours = int(millis / (1000 * 60 * 60)) % 24
return seconds, minutes, hours
class MainWindow(QMainWindow):
# Create a QSettings object rather than storing values. Pass in a company
# name and an application name
settings = QSettings("Custom GUIs", "Image Manager GUI")
#print(settings.fileName()) # NOTE: Uncomment to print the path to settings
images_path = "Images" # File path to the Images directory
image_dir = QDir(images_path)
info_dialog = None # Create variable for modeless dialog
def __init__(self):
"""MainWindow Constructor for Image Manager"""
super().__init__() # Constructor for QMainWindow
self.initializeUI()
def initializeUI(self):
"""Set up the GUI's main window and load initial settings and data."""
self.setWindowTitle("Image Manager")
self.setObjectName("ImageManager")
# Set up the main window, menu, dock widgets, and initialize the GUI's settings
self.setUpMainWindow()
self.displayImagePreviewDock()
self.createActions()
self.createMenus()
self.loadStoredImageData()
self.getInitialSettings()
self.show() # Display the main window
def setUpMainWindow(self):
"""Set up the application's main window containing the QListWidget."""
self.image_view_lw = ImageViewerListWidget(self)
# Use signals/slots to interact with the list widget
self.image_view_lw.itemSelectionChanged.connect(self.updateDockInfo)
self.image_view_lw.itemDoubleClicked.connect(self.displayImageInfoDialog)
# Use the list widget's internal model to enable/disable menu items
self.image_view_lw.model().rowsInserted.connect(self.manageMenuItems)
self.image_view_lw.model().rowsRemoved.connect(self.manageMenuItems)
self.setCentralWidget(self.image_view_lw)
def createActions(self):
"""Create the application's menu actions."""
# Create actions for File menu
self.import_act = QAction("Import Images...", self, triggered=self.importImages)
self.import_act.setShortcut("Ctrl+I")
self.preferences_act = QAction("Preferences...", self, triggered=self.showPreferencesDialog)
self.quit_act = QAction("Quit Task Manager", self, triggered=self.close)
self.quit_act.setShortcut(QKeySequence.StandardKey.Quit) # Ctrl+Q
# Create actions for Edit menu
self.select_all_act = QAction("Select All", self, triggered=self.image_view_lw.selectAll)
self.select_all_act.setShortcut(QKeySequence.StandardKey.SelectAll) # Ctrl+A
self.delete_act = QAction("Delete Images", self, triggered=self.deleteImages)
self.delete_act.setShortcut(QKeySequence.StandardKey.Delete) # Del
self.delete_act.setEnabled(False)
# Create actions for View menu
# Handle the visibility of the dock widget that displays images
self.show_dock_act = self.image_preview_dock.toggleViewAction()
self.show_dock_act.setText("Show Image View")
self.sort_ascend_act = QAction("Sort Ascending", self,
triggered=lambda: self.sortListItems(Qt.SortOrder.AscendingOrder))
self.sort_ascend_act.setEnabled(False)
self.sort_descend_act = QAction("Sort Descending", self,
triggered=lambda: self.sortListItems(Qt.SortOrder.DescendingOrder))
self.sort_descend_act.setEnabled(False)
self.fullscreen_act = QAction("Show Fullscreen", self,
triggered=self.displayFullScreen, checkable=True)
# Create actions for Help menu
self.about_act = QAction("About Image Manager",
self, triggered=self.showAboutDialog)
def createMenus(self):
"""Create the application's menu."""
if QSysInfo.productType() == "macos" or "osx":
self.menuBar().setNativeMenuBar(False)
self.file_menu = self.menuBar().addMenu("&File")
self.file_menu.addAction(self.import_act)
self.file_menu.addSeparator()
self.file_menu.addAction(self.preferences_act)
self.file_menu.addSeparator()
self.file_menu.addAction(self.quit_act)
self.edit_menu = self.menuBar().addMenu("&Edit")
self.edit_menu.addAction(self.select_all_act)
self.edit_menu.addSeparator()
self.edit_menu.addAction(self.delete_act)
self.view_menu = self.menuBar().addMenu("&View")
self.view_menu.addAction(self.show_dock_act)
self.view_menu.addSeparator()
self.view_menu.addAction(self.sort_ascend_act)
self.view_menu.addAction(self.sort_descend_act)
self.view_menu.addSeparator()
self.view_menu.addAction(self.fullscreen_act)
self.help_menu = self.menuBar().addMenu("&Help")
self.help_menu.addAction(self.about_act)
def manageMenuItems(self, parent, first, last):
"""Slot to enable/disable menu items if rows have been
added/deleted to QListWidget. The rowsInserted() and
rowsRemoved() that trigger this slot return the 'parent',
'first', and 'last' values, but they are not used in
this method."""
if self.image_view_lw.count() == 0:
self.delete_act.setEnabled(False)
self.sort_ascend_act.setEnabled(False)
self.sort_descend_act.setEnabled(False)
elif self.image_view_lw.count() > 0:
self.delete_act.setEnabled(True)
self.sort_ascend_act.setEnabled(True)
self.sort_descend_act.setEnabled(True)
def displayImagePreviewDock(self):
"""Dock widget that displays a selected image in a scrollable
area and uses its file name as the dock's title."""
self.image_preview_dock = QDockWidget()
self.image_preview_dock.setObjectName("PreviewDock")
self.image_preview_dock.setWindowTitle("Show Image View")
self.image_preview_dock.setAllowedAreas(Qt.DockWidgetAreas.RightDockWidgetArea)
self.display_image_label = QLabel()
self.display_image_label.setAlignment(Qt.Alignment.AlignCenter)
self.view_scroll_area = QScrollArea()
self.view_scroll_area.setMinimumWidth(300)
self.view_scroll_area.setWidgetResizable(True)
self.image_preview_dock.setWidget(self.view_scroll_area)
# Set initial location of dock widget in the main window
self.addDockWidget(Qt.DockWidgetAreas.RightDockWidgetArea, self.image_preview_dock)
def updateDockInfo(self):
"""Slot to update the image that the dock widget displays."""
# Only display an image if one item is selected
if (len(self.image_view_lw.selectedItems()) == 0 or
len(self.image_view_lw.selectedItems()) > 1):
self.image_preview_dock.setWindowTitle("Show Image View")
self.display_image_label.clear()
else:
curr_item = self.image_view_lw.currentItem()
self.image_preview_dock.setWindowTitle(curr_item.text())
self.show_dock_act.setText("Show Image View")
# Get the current height of the dock widget
dock_height = self.image_preview_dock.height()
# Get the size of the original image/item
icon_size = curr_item.icon().availableSizes()[0]
icon_width = icon_size.width()
# Return a pixmap from the item's icon and display in the scroll area
pixmap = curr_item.icon().pixmap(QSize(icon_width, dock_height))
self.display_image_label.setPixmap(pixmap)
self.view_scroll_area.setWidget(self.display_image_label)
def importImages(self):
"""Import the images a user selects, remove duplicates, and add
items to the QListWidget."""
duplicate_images = [] # Store the names of duplicate images
image_paths, _ = QFileDialog.getOpenFileNames(self,
"Select Image Files", "", "Images (*.png *.xpm *.jpg *.jpeg)")
if image_paths:
if self.image_dir.exists():
for image_path in image_paths:
# Pass image path to QFileInfo object
image_info = QFileInfo(image_path)
file_name = image_info.fileName()
item_name = image_info.baseName()
# Copy the files into the Images directory, check for files
# with the same name
new_name = self.image_dir.absolutePath() + f"/{file_name}"
file_exists = QFile.copy(image_path, new_name)
if file_exists == False:
duplicate_images.append(image_path)
else:
self.createListItems(image_path, item_name, image_info, new_name)
if self.is_delete_checked == True: # Handle deleting images
QFile.moveToTrash(image_path)
else:
QMessageBox.warning(self, "Images Location Not Found",
"""<p>The Images Location cannot be found. Restart the application to
recreate the directory.</p>""")
# Display a custom dialog to inform the user of duplicate images
if len(duplicate_images) != 0:
duplicates_dialog = QMessageBox(self)
duplicates_dialog.setIcon(QMessageBox.Icon.Information)
duplicates_dialog.setWindowTitle("Duplicate Images")
duplicates_dialog.setText("""<p>Some images were not imported because
they already exist.</p>""")
details = '\n'.join([item for item in duplicate_images])
duplicates_dialog.setDetailedText(details)
duplicates_dialog.exec()
duplicate_images.clear() # Clear the list
# Check if window is still in focus. If not, give it focus
if self.isActiveWindow() == False:
self.activateWindow()
def createListItems(self, image_path, item_name, image_info, new_name=None):
"""Simple method for creating QListWidgetItem objects.
'image_path': the path to the file.
'item_name': the base name used for QListWidgetItem objects.
'image_info': the QFileInfo object.
'new_name': used when importing new photos, making sure the program
points to the new image location."""
list_item = QListWidgetItem(QIcon(image_path), item_name)
self.image_view_lw.setIconSize(QSize(80, 80))
self.image_view_lw.addItem(list_item)
if new_name != None:
image_info.setFile(new_name)
self.image_view_lw.images_info_list.append(image_info)
def sortListItems(self, order):
"""First, sort the items in the QListWidget using sortItems(). Then handle
sorting the QFileInfo objects in the images_info_list using Python's sort() to
match how the QListWidget sorts items."""
self.image_view_lw.sortItems(order)
if order == Qt.SortOrder.AscendingOrder:
self.image_view_lw.images_info_list.sort(key=lambda item: (item.baseName().upper(), item.baseName()[0].islower()))
elif order == Qt.SortOrder.DescendingOrder:
self.image_view_lw.images_info_list.sort(reverse=True, key=lambda item: (item.baseName().upper(), item.baseName()[0].islower()))
def deleteImages(self):
"""Delete images from the QListWidget and from where images
are stored on disk."""
number_of_photos = len(self.image_view_lw.selectedItems())
answer = QMessageBox.warning(self, "Delete Image(s)",
f"Are you sure you want to delete {number_of_photos} image(s)?",
QMessageBox.StandardButtons.No | QMessageBox.StandardButtons.Yes,
QMessageBox.StandardButtons.No)
if answer == QMessageBox.StandardButtons.Yes:
for item in self.image_view_lw.selectedItems():
index = self.image_view_lw.indexFromItem(item).row()
# Get the image's information before deletion
image_info = self.image_view_lw.images_info_list[index]
# Remove items from the Images directory, from the list widget,
# and the images_info_list that stores QFileInfo objects
QFile.moveToTrash(image_info.absoluteFilePath())
self.image_view_lw.takeItem(index)
del self.image_view_lw.images_info_list[index]
del item
def loadStoredImageData(self):
"""Load images from the Images directory. The Images directory is
created the first time running the application."""
if not(self.image_dir.exists()):
QDir().mkdir(self.images_path)
elif self.image_dir.exists():
# Create a list of the files in the Images directory
images = self.image_dir.entryInfoList(QDir.Filters.AllEntries | QDir.Filters.NoDotAndDotDot)
for image in images:
# Imported files are QFileInfo objects
item_name = image.baseName()
path = image.absoluteFilePath()
self.createListItems(path, item_name, image)
def displayImageInfoDialog(self, item):
"""Display image metadata in a modeless dialog box. 'index' is the index of
the item that is clicked on."""
index = self.image_view_lw.indexFromItem(item).row()
if self.info_dialog == None:
self.info_dialog = ImageInfoDialog(self, self.image_view_lw.images_info_list[index])
elif self.info_dialog != None:
self.info_dialog.close()
self.info_dialog = ImageInfoDialog(self, self.image_view_lw.images_info_list[index])
self.info_dialog.show()
def showPreferencesDialog(self):
"""Display the application's preferences dialog. Save the value of the
delete_images_checkbox in the settings."""
prefs_dialog = PreferencesDialog(self, self.image_dir, self.is_delete_checked)
response = prefs_dialog.exec()
if response == 1: # QDialog.DialogCode.Accepted == 1
self.settings.setValue("delete_images", prefs_dialog.delete_images_checkbox.isChecked())
self.is_delete_checked = self.settings.value("delete_images", type=bool)
def displayFullScreen(self, state):
"""Check the state of checkable fullscreen_act. If True, show the
main window as fullscreen."""
if state: self.showFullScreen()
else: self.showNormal()
def showAboutDialog(self):
"""Display the application's about dialog."""
QMessageBox.about(self, "Image Manager",
"""<h3 style='text-align:center'>Image Manager</h3>
<p style='font-weight: normal'>The <b><i>Image Manager GUI</i></b>
demonstrates how to build an application for managing photos. This
program also examines some of the common features found in many GUIs.</p>
<p style='font-weight: normal'>This application is part of
<b><i>Building Custom UIs with PyQt</i></b>.</p>
<p style='font-weight: normal'>Designed by: <b>Joshua Willman</b></p>
<p style='font-weight: normal'>Icons created by: <b>Joshua Willman</b></p>""")
def getInitialSettings(self):
"""Get initial settings of the application using QSettings upon startup."""
position = self.settings.value("position", QPoint(200, 0))
size = self.settings.value("size", QSize(800, 500))
self.is_delete_checked = self.settings.value("delete_images", type=bool)
# restoreState() is used here to restore the image_preview_dock widget
self.restoreState(self.settings.value("window_state", bytes(QByteArray())))
self.resize(size)
self.move(position)
return self.is_delete_checked
def saveSettings(self):
"""Save the settings of the application."""
self.settings.setValue("position", self.pos())
self.settings.setValue("size", self.size())
self.settings.setValue("window_state", self.saveState())
def closeEvent(self, event):
"""Save the application's settings in the closeEvent()."""
self.saveSettings()
event.setAccepted(True)
class MainWindow(QMainWindow):
def __init__(self):
""" MainWindow Constructor """
super().__init__()
self.initializeUI()
def initializeUI(self):
"""Set up the GUI's main window."""
self.setMinimumSize(700, 400)
self.setWindowTitle("GIF and Image Viewer")
# Set up the main window, menu, and dock widget
self.setUpMainWindow()
self.displayFilesDock()
self.createActions()
self.createMenus()
self.createToolbar()
self.show() # Display the main window
def setUpMainWindow(self):
"""Set up the application's main window and widgets."""
self.movie = QMovie() # Create movie object
self.movie.stateChanged.connect(self.changeButtonStates)
self.media_label = QLabel() # Create label to place images/GIFs on
self.media_label.setPixmap(QPixmap("icons/image_label.png"))
self.media_label.setFrameShape(QFrame.Shape.StyledPanel)
self.media_label.setAlignment(Qt.AlignmentFlag.AlignCenter)
# Prevent the label from resizing and affecting the
# dock widget when viewing images
self.media_label.setSizePolicy(QSizePolicy.Policy.Ignored, QSizePolicy.Policy.Expanding)
self.setCentralWidget(self.media_label)
def createActions(self):
"""Create the application's menu actions."""
# Create actions for File menu
self.open_act = QAction("Open...", self, triggered=self.openDirectory)
self.open_act.setShortcut(QKeySequence.StandardKey.Open)
self.quit_act = QAction("Quit Viewer", self, triggered=self.close)
self.quit_act.setShortcut(QKeySequence.StandardKey.Quit) # Ctrl+Q
# Create actions for View menu
# Handle the visibility of the dock widget
self.show_dock_act = self.files_dock.toggleViewAction()
self.show_dock_act.setText("Show Media Folder")
# Create actions for the toolbar (These actions could also be
# added to the GUI's menu bar or to a context menu)
self.play_act = QAction(QIcon("icons/play.png"), "Play", self, triggered=self.startMovie)
self.pause_act = QAction(QIcon("icons/pause.png"), "Pause", self, triggered=self.pauseMovie)
self.stop_act = QAction(QIcon("icons/stop.png"), "Stop/Reset", self, triggered=self.stopMovie)
self.disableMovieButtons()
def createMenus(self):
"""Create the application's menu."""
# Make the toolbar appear in the main window for macOS users.
# More information about this in Chapter 2 - Building the Foundation for GUIs
if QSysInfo.productType() == "macos" or "osx":
self.menuBar().setNativeMenuBar(False)
self.file_menu = self.menuBar().addMenu("&File")
self.file_menu.addAction(self.open_act)
self.file_menu.addSeparator()
self.file_menu.addAction(self.quit_act)
self.view_menu = self.menuBar().addMenu("&View")
self.view_menu.addAction(self.show_dock_act)
def createToolbar(self):
"""Create the application's toolbar for playing GIFs."""
toolbar = self.addToolBar("GIF Controls Toolbar")
toolbar.setIconSize(QSize(24, 24))
# Add actions to the toolbar
toolbar.addAction(self.play_act)
toolbar.addAction(self.pause_act)
toolbar.addAction(self.stop_act)
def displayFilesDock(self):
"""Dock widget that displays the movie file location in a QLineEdit
widget, provides a button for opening directories with images and GIFs,
and shows the media from the selected folder in a QTreeWidget."""
self.files_dock = QDockWidget()
self.files_dock.setWindowTitle("Media Folder")
self.files_dock.setAllowedAreas(Qt.DockWidgetArea.LeftDockWidgetArea)
folder_label = QLabel("Media Location:")
# The QLineEdit widget is set to read-only as a quick way to display
# the folder path
self.folder_line = QLineEdit()
self.folder_line.setMinimumWidth(100)
self.folder_line.setReadOnly(True)
open_button = QPushButton("Open...")
open_button.clicked.connect(self.openDirectory)
folder_h_box = QHBoxLayout()
folder_h_box.addWidget(folder_label)
folder_h_box.addWidget(self.folder_line)
folder_h_box.addWidget(open_button)
self.files_tree = QTreeWidget()
self.files_tree.setHeaderLabel("Media Files")
self.files_tree.setColumnCount(1)
self.files_tree.itemSelectionChanged.connect(self.displayMediaFile)
# Set up the dock's layout
dock_v_box = QVBoxLayout()
dock_v_box.addLayout(folder_h_box)
dock_v_box.addWidget(self.files_tree)
dock_container = QWidget()
dock_container.setLayout(dock_v_box)
self.files_dock.setWidget(dock_container)
self.addDockWidget(Qt.DockWidgetArea.LeftDockWidgetArea, self.files_dock)
def openDirectory(self):
"""Open a QFileDialog for selecting a local directory. Only display
image and GIF files."""
directory = QFileDialog.getExistingDirectory(self, "Choose Directory", "",
QFileDialog.Option.ShowDirsOnly) # Specify the file mode to only select directories
if directory:
# Display the selected folder text in the QLineEdit. There are other, and
# possibly better, ways to handle displaying the text, but for simplicity,
# this is the method used in this GUI
self.folder_line.setText(directory)
# Get the contents of the directory and only display files with
# specified extensions
file_dir = QDir(directory)
filters = ["*.gif", "*.png", "*.jpg", "*.jpeg"]
files_info = file_dir.entryInfoList(filters, QDir.Filter.Files)
# Clear the contents of the QTreeWidget
if self.files_tree.model().rowCount() > 0:
# NOTE: Since files_tree is connected to the itemSelectionChanged signal,
# using the clear() method below will also cause the signal to be emitted.
# This causes an undesired issue because of how the items are deleted. To avoid
# the signal being called, QObject.blockSignals() will halt files_tree from
# emitting signals while removing items
self.files_tree.blockSignals(True)
# Use the convenience method clear() provided by QTreeWidget to remove
# all items and selections
self.files_tree.clear()
self.files_tree.blockSignals(False)
# Reset the QLabel and its image, and disable the movie buttons (in case the
# last item selected was a GIF)
self.media_label.clear()
self.media_label.setPixmap(QPixmap("icons/image_label.png"))
self.disableMovieButtons()
# Create items for each file and add them to the tree
for file in files_info:
item = QTreeWidgetItem()
item.setText(0, file.fileName())
self.files_tree.addTopLevelItem(item)
def displayMediaFile(self):
"""Display the selected media file on the QLabel. Used instead of
the itemClicked signal to handle whether the user clicks on an item
or if arrow keys are used to navigate the items in the tree."""
# Check the state of the movie, i.e. check if a movie is playing. If it is,
# stop the movie
if self.movie.state() == QMovie.MovieState.Running:
self.stopMovie()
# Get the text from the QLineEdit, folder_line, and concatenate it with
# the selected item's text
column = self.files_tree.currentColumn()
media_location = self.folder_line.text() + "/" + self.files_tree.selectedItems()[0].text(column)
if media_location.split(".")[1] == "gif":
self.movie.setFileName(media_location)
# Check if image data is valid before playing
if self.movie.isValid():
# Use setMovie() to set the label's contents as the selected GIF
self.media_label.setMovie(self.movie)
self.startMovie() # Call method to begin playing
else:
# Disable all buttons when an image is selected
self.disableMovieButtons()
# Set the label's pixmap (have the image fit the current size of the image label)
self.media_label.setPixmap(QPixmap(media_location).scaled(self.media_label.size(),
Qt.AspectRatioMode.KeepAspectRatio, Qt.TransformationMode.SmoothTransformation))
def startMovie(self):
"""Start playing the movie."""
self.movie.start()
def pauseMovie(self):
"""Pause the movie."""
self.movie.setPaused(True)
def stopMovie(self):
"""Stop playing the movie and reset the movie back to
the first frame."""
self.movie.stop()
self.movie.jumpToFrame(0)
def changeButtonStates(self, state):
"""Slot that handles enabling/disabling buttons in the toolbar
based on the state of QMovie."""
if state == QMovie.MovieState.Running:
# The animation begins playing once control returns to the event loop
self.play_act.setEnabled(False)
self.pause_act.setEnabled(True)
self.stop_act.setEnabled(True)
if state == QMovie.MovieState.Paused:
self.play_act.setEnabled(True)
self.pause_act.setEnabled(False)
self.stop_act.setEnabled(False)
if state == QMovie.MovieState.NotRunning:
self.play_act.setEnabled(True)
self.pause_act.setEnabled(False)
self.stop_act.setEnabled(False)
def disableMovieButtons(self):
"""Simple method to disable the movie buttons in the toolbar."""
self.play_act.setEnabled(False)
self.pause_act.setEnabled(False)
self.stop_act.setEnabled(False)