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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -1,90 +1,146 @@ | ||
| import sys | ||
| from PyQt6.QtCore import Qt, QModelIndex, QSortFilterProxyModel | ||
| from PyQt6.QtGui import QStandardItemModel, QStandardItem | ||
| from PyQt6.QtWidgets import QApplication, QMainWindow, QWidget, QVBoxLayout, QPushButton, QListView | ||
|
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| class QDetailListView(QListView): | ||
| def __init__(self, parent=None): | ||
| super().__init__(parent) | ||
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| self.setSelectionMode(QListView.SelectionMode.SingleSelection) | ||
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| self.model = QStandardItemModel() | ||
| self.setModel(self.model) | ||
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| self.sort_proxy_model = QSortFilterProxyModel() | ||
| self.sort_proxy_model.setSourceModel(self.model) | ||
| self.sort_proxy_model.setSortRole(Qt.ItemDataRole.DisplayRole) | ||
| self.sort_proxy_model.sort(0, Qt.SortOrder.AscendingOrder) | ||
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| self.setModel(self.sort_proxy_model) | ||
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| self.items = set() | ||
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| def setSelectionChangedFunction(self, func): | ||
| self.selectionModel().selectionChanged.connect(func) | ||
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| def add_strings(self, string_list): | ||
| for string in [s for s in string_list if s not in self.items]: | ||
| self.items.add(string) | ||
| self.model.appendRow(QStandardItem(string)) | ||
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| def clear(self): | ||
| self.model.clear() | ||
| self.items.clear() | ||
| from PyQt6.QtGui import * | ||
| from PyQt6.QtWidgets import * | ||
| from PyQt6.QtCore import * | ||
|
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| import time | ||
| import traceback, sys | ||
|
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|
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| class WorkerSignals(QObject): | ||
| ''' | ||
| Defines the signals available from a running worker thread. | ||
| Supported signals are: | ||
| finished | ||
| No data | ||
| error | ||
| tuple (exctype, value, traceback.format_exc() ) | ||
| result | ||
| object data returned from processing, anything | ||
| progress | ||
| int indicating % progress | ||
| ''' | ||
| finished = pyqtSignal() | ||
| error = pyqtSignal(tuple) | ||
| result = pyqtSignal(object) | ||
| progress = pyqtSignal(int) | ||
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|
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| class Worker(QRunnable): | ||
| ''' | ||
| Worker thread | ||
| Inherits from QRunnable to handler worker thread setup, signals and wrap-up. | ||
| :param callback: The function callback to run on this worker thread. Supplied args and | ||
| kwargs will be passed through to the runner. | ||
| :type callback: function | ||
| :param args: Arguments to pass to the callback function | ||
| :param kwargs: Keywords to pass to the callback function | ||
| ''' | ||
|
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| def __init__(self, fn, *args, **kwargs): | ||
| super(Worker, self).__init__() | ||
|
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| # Store constructor arguments (re-used for processing) | ||
| self.fn = fn | ||
| self.args = args | ||
| self.kwargs = kwargs | ||
| self.signals = WorkerSignals() | ||
|
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| # Add the callback to our kwargs | ||
| self.kwargs['progress_callback'] = self.signals.progress | ||
|
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| @pyqtSlot() | ||
| def run(self): | ||
| ''' | ||
| Initialise the runner function with passed args, kwargs. | ||
| ''' | ||
|
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||
| # Retrieve args/kwargs here; and fire processing using them | ||
| try: | ||
| result = self.fn(*self.args, **self.kwargs) | ||
| except: | ||
| traceback.print_exc() | ||
| exctype, value = sys.exc_info()[:2] | ||
| self.signals.error.emit((exctype, value, traceback.format_exc())) | ||
| else: | ||
| self.signals.result.emit(result) # Return the result of the processing | ||
| finally: | ||
| self.signals.finished.emit() # Done | ||
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|
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| class MainWindow(QMainWindow): | ||
| def __init__(self): | ||
| super().__init__() | ||
| self.initUI() | ||
|
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| def initUI(self): | ||
| self.setWindowTitle("Detail List View Example") | ||
| self.setGeometry(100, 100, 500, 500) | ||
|
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| # create a central widget and layout | ||
| central_widget = QWidget() | ||
| self.setCentralWidget(central_widget) | ||
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|
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| def __init__(self, *args, **kwargs): | ||
| super(MainWindow, self).__init__(*args, **kwargs) | ||
|
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| self.counter = 0 | ||
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| layout = QVBoxLayout() | ||
| central_widget.setLayout(layout) | ||
|
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| # create the DetailListView object | ||
| self.browser_detailView = DetailListView(self) | ||
|
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| # set the data of the DetailListView to an initial set of strings | ||
| # data_set = {"apple", "banana", "orange", "pear"} | ||
| # self.browser_detailView.set_data(data_set) | ||
|
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| # create a button to add strings to the DetailListView | ||
| add_button = QPushButton("Add Strings") | ||
| add_button.clicked.connect(self.add_strings) | ||
|
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| # create a button to clear the contents of the DetailListView | ||
| clear_button = QPushButton("Clear") | ||
| clear_button.clicked.connect(self.browser_detailView.clear) | ||
|
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| # add the DetailListView and buttons to the layout | ||
| layout.addWidget(self.browser_detailView) | ||
| layout.addWidget(add_button) | ||
| layout.addWidget(clear_button) | ||
| self.x = 0 | ||
|
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| self.l = QLabel("Start") | ||
| b = QPushButton("DANGER!") | ||
| b.pressed.connect(self.oh_no) | ||
|
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| layout.addWidget(self.l) | ||
| layout.addWidget(b) | ||
|
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| w = QWidget() | ||
| w.setLayout(layout) | ||
|
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| self.setCentralWidget(w) | ||
|
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| self.show() | ||
|
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| def add_strings(self): | ||
| # create a large list of unique strings | ||
| if self.x == 0: | ||
| string_list = ["apple", "banana", "orange", "kiwi"] | ||
| else: | ||
| string_list = ["apple", "banana", "ass", "kiwi"] | ||
|
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|
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| # add the list of strings to the DetailListView | ||
| self.browser_detailView.add_strings(string_list) | ||
| self.x += 1 | ||
|
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| if __name__ == "__main__": | ||
| app = QApplication(sys.argv) | ||
| window = MainWindow() | ||
| window.show() | ||
| sys.exit(app.exec()) | ||
|
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| self.threadpool = QThreadPool() | ||
| print("Multithreading with maximum %d threads" % self.threadpool.maxThreadCount()) | ||
|
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| self.timer = QTimer() | ||
| self.timer.setInterval(1000) | ||
| self.timer.timeout.connect(self.recurring_timer) | ||
| self.timer.start() | ||
|
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| def progress_fn(self, n): | ||
| print("%d%% done" % n) | ||
|
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| def execute_this_fn(self, progress_callback): | ||
| for n in range(0, 5): | ||
| time.sleep(1) | ||
| progress_callback.emit(n*100/4) | ||
|
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| return "Done." | ||
|
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| def print_output(self, s): | ||
| print(s) | ||
|
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| def thread_complete(self): | ||
| print("THREAD COMPLETE!") | ||
|
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| def oh_no(self): | ||
| # Pass the function to execute | ||
| worker = Worker(self.execute_this_fn) # Any other args, kwargs are passed to the run function | ||
| worker.signals.result.connect(self.print_output) | ||
| worker.signals.finished.connect(self.thread_complete) | ||
| worker.signals.progress.connect(self.progress_fn) | ||
|
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| # Execute | ||
| self.threadpool.start(worker) | ||
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| def recurring_timer(self): | ||
| self.counter +=1 | ||
| self.l.setText("Counter: %d" % self.counter) | ||
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| app = QApplication([]) | ||
| window = MainWindow() | ||
| app.exec() |