可以在 QTableView 中的委托小部件后面看到文本

Question

我有一个使用 QItemDelegate 和 QAbstractTableModel 的 QTableView。一行包含 QPushButton、QCheckBox、QCombobox 和 QTimeEdit。我的问题是文本出现在小部件后面。当包含 QPushButton 和 QCheckBox 的单元格被选中然后取消选中时，true 或 false 出现在小部件后面。为 QCombobox 和 QTimeEdit 提供的文本也在小部件后面可见。

最小示例：

import sys
from PySide2.QtWidgets import QApplication, QMainWindow, QWidget, QVBoxLayout, QPushButton, QItemDelegate, QTimeEdit, \
    QCheckBox, QComboBox, QTableView
from PySide2.QtCore import QAbstractTableModel, Qt, QTime
from PySide2.QtGui import QIcon


class Delegate(QItemDelegate):

    def __init__(self):
        QItemDelegate.__init__(self)

        self.type_items = ["Job", "Activity"]

    def createEditor(self, parent, option, index):

        # CHECKBOX, COMBOBOX, LINEEDIT, TIMEDIT
        if index.column() == 0:
            pushButton = QPushButton(parent)
            # icon = QIcon("Images/cross.png")
            # pushButton.setIcon(icon)
            return pushButton
        elif index.column() == 1:
            checkBox = QCheckBox(parent)
            return checkBox
        elif index.column() == 2:
            comboBox = QComboBox(parent)
            for text in self.type_items:
                comboBox.addItem(text, (index.row(), index.column()))
            return comboBox
        elif index.column() == 3:
            timeEdit = QTimeEdit(parent)
            timeEdit.setDisplayFormat('HH:mm')
            return timeEdit
        return super().createEditor(parent, option, index)


class TableModel(QAbstractTableModel):
    def __init__(self, data):
        super(TableModel, self).__init__()
        self._data = data

    def data(self, index, role):
        if role in (Qt.DisplayRole, Qt.EditRole):
            return self._data[index.row()][index.column()]

    def rowCount(self, index=None):
        return len(self._data)

    def columnCount(self, index=None):
        return len(self._data[0])

    def flags(self, index):
        return super().flags(index) | Qt.ItemIsEditable

    def setData(self, index, value, role=Qt.EditRole):
        if role == Qt.EditRole:
            self._data[index.row()][index.column()] = value
            self.dataChanged.emit(index, index)
            return True
        return False


class MainWindow(QMainWindow):
    def __init__(self, parent=None):
        super(MainWindow, self).__init__(parent)

        # PARENT WIDGET
        localWidget = QWidget()

        self.table = QTableView(localWidget)

        data = [["", Qt.CheckState.Checked, "Job", QTime(2, 1)], ["", Qt.CheckState.Unchecked, "Activity", QTime(3, 0)]]

        self.model = TableModel(data)
        self.table.setModel(self.model)
        self.table.setItemDelegate(Delegate())

        # VERTICAL LAYOUT
        layout_v = QVBoxLayout()
        layout_v.addWidget(self.table)
        localWidget.setLayout(layout_v)

        for row in range(self.model.rowCount()):
            for column in range(self.model.columnCount()):
                index = self.model.index(row, column)
                self.table.openPersistentEditor(index)

        col_widths = [40, 40, 90, 65]
        for col in range(self.model.columnCount()):
            self.table.setColumnWidth(col, col_widths[col])

        self.setCentralWidget(localWidget)
        self.show()


app = QApplication(sys.argv)
window = MainWindow()
window.show()
sys.exit(app.exec_())

如何停止在小部件后面显示文本？

Answer 1

一个可能的解决方案是绘制的文本是一个空字符串。

class Delegate(QItemDelegate):
    def __init__(self):
        QItemDelegate.__init__(self)

        self.type_items = ["Job", "Activity"]

    def drawDisplay(self, painter, option, rect, text):
        super().drawDisplay(painter, option, rect, "")

    def createEditor(self, parent, option, index):
        # ...

可以在 QTableView 中的委托小部件后面看到文本

Text can be seen behind delegate widgets in QTableView

python

qitemdelegate

qabstracttablemodel

python-3.x

pyside2