In a QTableView, how can I make horizontal header cells display vertical text?

Question

I wish to make horizontal header cells in a QTableView display text from top to bottom (i.e., vertically), how can I do this?

Example PyQt5 app which displays a QTableView with a horizontal header showing text in the normal direction:

from PyQt5.QtGui import *
from PyQt5.QtWidgets import *
from PyQt5.QtCore import *
import sys

class TableModel(QAbstractTableModel):
    def __init__(self, parent):
        super(TableModel, self).__init__(parent)

    def headerData(self, section, orientation, role):
        if orientation != Qt.Horizontal:
            return
        if role != Qt.DisplayRole:
            return

        return 'Header Data'

    def data(self, index, role):
        if role != Qt.DisplayRole:
            return

        return 'Row Data'

    def rowCount(self, parent):
        return 1

    def columnCount(self, parent):
        return 1


class Window(QMainWindow):
    def __init__(self):
        super(Window, self).__init__()

        main_widget = QWidget(self)
        self.setCentralWidget(main_widget)
        layout = QVBoxLayout(main_widget)

        view = QTableView(main_widget)
        view.horizontalHeader().setVisible(True)
        view.verticalHeader().setVisible(False)
        layout.addWidget(view)
        model = TableModel(view)
        view.setModel(model)
        view.resizeColumnsToContents()

app = QApplication(sys.argv)
window = Window()
window.show()
app.exec_()

Marek R · Accepted Answer · 2022-07-11T16:39:34.787

3

Simple use of delegate will not work here.

You need to subclass QHeaderView and override paintSection.
In implementation of it you need:

rotate and translate painter
calculate new rectange which wil take into acount above transformation
call old implementation of paintSection with new values
restore painter state (reverse transformation).

edited Jul 11 '22 at 16:39

answered Mar 25 '14 at 12:24

Marek R

32,568
6
55
140

score 2 · Answer 2 · answered Mar 25 '14 at 10:22

The easy solution is to insert newlines between each character in the text of header cells (see the model's headerData method):

from PyQt5.QtGui import *
from PyQt5.QtWidgets import *
from PyQt5.QtCore import *
import sys

class TableModel(QAbstractTableModel):
    def __init__(self, parent):
        super(TableModel, self).__init__(parent)

    def headerData(self, section, orientation, role):
        if orientation != Qt.Horizontal:
            return
        if role != Qt.DisplayRole:
            return

        # Make text appear flowing downwards
        return '\n'.join([x for x in 'Header Data']).replace(' ', '')

    def data(self, index, role):
        if role != Qt.DisplayRole:
            return

        return 'Row Data'

    def rowCount(self, parent):
        return 1

    def columnCount(self, parent):
        return 1


class Window(QMainWindow):
    def __init__(self):
        super(Window, self).__init__()

        main_widget = QWidget(self)
        self.setCentralWidget(main_widget)
        layout = QVBoxLayout(main_widget)

        view = QTableView(main_widget)
        view.horizontalHeader().setVisible(True)
        view.verticalHeader().setVisible(False)
        layout.addWidget(view)
        model = TableModel(view)
        view.setModel(model)
        view.resizeColumnsToContents()

app = QApplication(sys.argv)
window = Window()
window.show()
app.exec_()

In a QTableView, how can I make horizontal header cells display vertical text?

2 Answers2

Linked