Details
-
Bug
-
Resolution: Unresolved
-
P2: Important
-
None
-
5.13.0, 5.13.1, 5.13.2, 5.14.1, 5.14.2, 5.15.0, 5.15.1, 5.15.2, 5.15.3, 5.15.4
-
None
Description
I am using beginMoveColumns to move a single column over in a QTableView, but cell selections get shuffled and column widths don't move correctly. Moving rows using the same logic seems to work fine.
Video: https://www.screencast.com/t/5UJ0iByZCEE
Below is a PyQt5 example in Python, I don't use C++ but maybe someone else can replicate it since I don't think this is a problem with the Python wrapper
from PyQt5 import QtWidgets, QtCore, QtGui import sys from PyQt5.QtCore import QModelIndex, Qt class MyTableModel(QtCore.QAbstractTableModel): def __init__(self, data=[[]], parent=None): super().__init__(parent) self.data = data def headerData(self, section: int, orientation: Qt.Orientation, role: int): if role == QtCore.Qt.DisplayRole: return "Header" def columnCount(self, parent=None): return len(self.data[0]) def rowCount(self, parent=None): return len(self.data) def data(self, index: QModelIndex, role: int): if role == QtCore.Qt.DisplayRole: row = index.row() col = index.column() return str(self.data[row][col]) def move_column(self, ix, new_ix): parent = QtCore.QModelIndex() if new_ix > ix: target = new_ix + 1 else: target = new_ix self.beginMoveColumns(parent, ix, ix, parent, target) # Shift column in each row for row in self.data: row.insert(new_ix, row.pop(ix)) self.endMoveColumns() def move_row(self, ix, new_ix): parent = QtCore.QModelIndex() if new_ix > ix: target = new_ix + 1 else: target = new_ix self.beginMoveRows(parent, ix, ix, parent, target) # Shift row self.data.insert(new_ix, self.data.pop(ix)) self.endMoveRows() if __name__ == '__main__': app = QtWidgets.QApplication(sys.argv) data = [] for i in range(12): row = [] data.append(row) for j in range(6): row.append(f"R{i}_C{j}") model = MyTableModel(data) view = QtWidgets.QTableView() view.setModel(model) view.setColumnWidth(0, 50) view.setColumnWidth(1, 100) view.setRowHeight(0, 50) view.setRowHeight(1, 100) container = QtWidgets.QWidget() layout = QtWidgets.QVBoxLayout() container.setLayout(layout) layout.addWidget(view) button = QtWidgets.QPushButton("Move 1st column right by 1") button.clicked.connect(lambda: model.move_column(0, 1)) layout.addWidget(button) button = QtWidgets.QPushButton("Move 1st column right by 2") button.clicked.connect(lambda: model.move_column(0, 2)) layout.addWidget(button) button = QtWidgets.QPushButton("Move 1st row down by 1") button.clicked.connect(lambda: model.move_row(0, 1)) layout.addWidget(button) button = QtWidgets.QPushButton("Move 1st row down by 2") button.clicked.connect(lambda: model.move_row(0, 2)) layout.addWidget(button) container.resize(800, 800) container.show() sys.exit(app.exec_())
All the versions listed below which I tested have cell selections not moving properly when moving columns, and every version EXCEPT 5.14.1 has column widths not being maintained properly when moving. In every version, moving rows with the same technique works fine.
5.13.2: https://www.screencast.com/t/mPXbeA8Rjp
5.14.1: https://www.screencast.com/t/d8lRFMuM04HJ
5.14.2: https://www.screencast.com/t/n1HXqvzr
5.15.2: https://www.screencast.com/t/kKAL4xiJJXuk
5.15.4: https://www.screencast.com/t/smLdJb8Tb