Vladislav_Alekseev | 2021-03-24 11:48:38 UTC | #1
Hello everyone! I want to make the progress of the process (QProgressBar)in QTableView, it already worked, but now I want to add a color change when the process stops. I don't understand how to do this with a delegate, I tried installing a new delegate, but it doesn't work (it doesn't redraw the color), I tried installing a standard delegate, but there are no changes. There is no range in the delegate, i.e. SetRange(0, 0) the process is either running (green) or not (red).
Example:
python
from PySide2 import QtCore, QtWidgets, QtGui
class ProgressBarDelegate(QtWidgets.QStyledItemDelegate):
def __init__(self, parent, color):
super().__init__(parent)
self.color = color
def paint(self, painter, option, index):
if index.column() == 2:
if (isinstance(self.parent(), QtWidgets.QAbstractItemView)
and self.parent().model() is index.model()):
self.parent().openPersistentEditor(index)
QtWidgets.QStyledItemDelegate.paint(self, painter, option, index)
else:
QtWidgets.QStyledItemDelegate.paint(self, painter, option, index)
def createEditor(self, parent: QtWidgets.QWidget, option: QtWidgets.QStyleOptionViewItem,
index: QtCore.QModelIndex) -> QtWidgets.QWidget:
editor = QtWidgets.QProgressBar(parent)
editor.setRange(0, 0)
editor.setTextVisible(False)
editor.setStyleSheet("QProgressBar:chunk {background-color:" + self.color + "; width: 20px; margin: 0.5px}")
return editor
class PushButtonDelegate(QtWidgets.QStyledItemDelegate):
clicked = QtCore.Signal(QtCore.QModelIndex)
def paint(self, painter, option, index):
if (isinstance(self.parent(), QtWidgets.QAbstractItemView)
and self.parent().model() is index.model()):
self.parent().openPersistentEditor(index)
QtWidgets.QStyledItemDelegate.paint(self, painter, option, index)
def createEditor(self, parent, option, index):
button = QtWidgets.QPushButton(parent)
button.clicked.connect(lambda *args, ix=index: self.clicked.emit(ix))
return button
def setEditorData(self, editor, index):
editor.setText("Start/Stop")
def updateEditorGeometry(self, editor, option, index):
editor.setGeometry(option.rect)
class MyWidgetsForm(QtWidgets.QMainWindow):
def __init__(self, parent=None):
QtWidgets.QMainWindow.__init__(self, parent)
self.initUi()
self.initModel()
self.pbDelegate.clicked.connect(self.onPBDelegateClicked)
def onPBDelegateClicked(self, pushRow):
print(self.tableView.model().index(pushRow.row(), 2).data())
if self.tableView.model().index(pushRow.row(), 2).data() is None or self.tableView.model().index(pushRow.row(),
2).data() == 0:
prbarDelegate = ProgressBarDelegate(self.tableView, "green")
self.tableView.setItemDelegateForRow(pushRow.row(), prbarDelegate)
self.tableView.model().setData(self.tableView.model().index(pushRow.row(), 2), 1,
QtCore.Qt.DisplayRole)
elif self.tableView.model().index(pushRow.row(), 2).data() == 1:
prbarDelegate = ProgressBarDelegate(self.tableView, "red")
self.tableView.setItemDelegateForRow(pushRow.row(), prbarDelegate)
self.tableView.model().setData(self.tableView.model().index(pushRow.row(), 2), 0,
QtCore.Qt.DisplayRole)
def initUi(self):
self.setFixedSize(600, 300)
self.tableView = QtWidgets.QTableView()
layout = QtWidgets.QHBoxLayout()
layout.addWidget(self.tableView)
cw = QtWidgets.QWidget()
cw.setLayout(layout)
self.setCentralWidget(cw)
def initModel(self):
headers = ['Путь', 'Управление', 'Прогресс']
self.pbDelegate = PushButtonDelegate(self.tableView)
self.stm = QtGui.QStandardItemModel()
self.stm.setHorizontalHeaderLabels(headers)
for row in range(5):
self.stm.setItem(row, 0, QtGui.QStandardItem("some_path" + str(row)))
self.stm.setItem(row, 1, QtGui.QStandardItem())
self.tableView.setModel(self.stm)
self.tableView.clearSpans()
self.tableView.setItemDelegateForColumn(1, self.pbDelegate)
self.tableView.resizeColumnsToContents()
self.tableView.horizontalHeader().setSectionResizeMode(QtWidgets.QHeaderView.Stretch)
if __name__ == "__main__":
app = QtWidgets.QApplication()
myapp = MyWidgetsForm()
myapp.show()
app.exec_()
Packaging Python Applications with PyInstaller by Martin Fitzpatrick — This step-by-step guide walks you through packaging your own Python applications from simple examples to complete installers and signed executables.
