pythonpyqtpyqt4qtabwidget

PyQt: Editable QTabWidget tab text


I can rename tab label programmatically.

With QInputDialog I can get new label text and set tab widget label.

But, I hope for a more user-friendly solution like double-clicking on label and get editing on the tab itself.

A QListWidgetItem with editable flag can show me the way, but I can't find the solution for tab label.


Solution

  • There are no built-in methods for achieving this. However, you could use a simple popup line-edit and position it over the tab. Here's a basic demo script:

    enter image description here

    PyQt5:

    import sys
    from PyQt5 import QtCore, QtWidgets
    
    class TabBar(QtWidgets.QTabBar):
        def __init__(self, parent):
            super().__init__(parent)
            self._editor = QtWidgets.QLineEdit(self)
            self._editor.setWindowFlags(QtCore.Qt.Popup)
            self._editor.setFocusProxy(self)
            self._editor.editingFinished.connect(self.handleEditingFinished)
            self._editor.installEventFilter(self)
    
        def eventFilter(self, widget, event):
            if ((event.type() == QtCore.QEvent.MouseButtonPress and
                 not self._editor.geometry().contains(event.globalPos())) or
                (event.type() == QtCore.QEvent.KeyPress and
                 event.key() == QtCore.Qt.Key_Escape)):
                self._editor.hide()
                return True
            return super().eventFilter(widget, event)
    
        def mouseDoubleClickEvent(self, event):
            index = self.tabAt(event.pos())
            if index >= 0:
                self.editTab(index)
    
        def editTab(self, index):
            rect = self.tabRect(index)
            self._editor.setFixedSize(rect.size())
            self._editor.move(self.parent().mapToGlobal(rect.topLeft()))
            self._editor.setText(self.tabText(index))
            if not self._editor.isVisible():
                self._editor.show()
    
        def handleEditingFinished(self):
            index = self.currentIndex()
            if index >= 0:
                self._editor.hide()
                self.setTabText(index, self._editor.text())
    
    class Window(QtWidgets.QTabWidget):
        def __init__(self):
            super().__init__()
            self.setTabBar(TabBar(self))
            self.addTab(QtWidgets.QWidget(self), 'Tab One')
            self.addTab(QtWidgets.QWidget(self), 'Tab Two')
    
    if __name__ == '__main__':
    
        app = QtWidgets.QApplication(sys.argv)
        window = Window()
        window.setWindowTitle('Test')
        window.setGeometry(600, 100, 200, 100)
        window.show()
        sys.exit(app.exec_())
    

    PyQt4:

    from PyQt4 import QtGui, QtCore
    
    class TabBar(QtGui.QTabBar):
        def __init__(self, parent):
            QtGui.QTabBar.__init__(self, parent)
            self._editor = QtGui.QLineEdit(self)
            self._editor.setWindowFlags(QtCore.Qt.Popup)
            self._editor.setFocusProxy(self)
            self._editor.editingFinished.connect(self.handleEditingFinished)
            self._editor.installEventFilter(self)
    
        def eventFilter(self, widget, event):
            if ((event.type() == QtCore.QEvent.MouseButtonPress and
                 not self._editor.geometry().contains(event.globalPos())) or
                (event.type() == QtCore.QEvent.KeyPress and
                 event.key() == QtCore.Qt.Key_Escape)):
                self._editor.hide()
                return True
            return QtGui.QTabBar.eventFilter(self, widget, event)
    
        def mouseDoubleClickEvent(self, event):
            index = self.tabAt(event.pos())
            if index >= 0:
                self.editTab(index)
    
        def editTab(self, index):
            rect = self.tabRect(index)
            self._editor.setFixedSize(rect.size())
            self._editor.move(self.parent().mapToGlobal(rect.topLeft()))
            self._editor.setText(self.tabText(index))
            if not self._editor.isVisible():
                self._editor.show()
    
        def handleEditingFinished(self):
            index = self.currentIndex()
            if index >= 0:
                self._editor.hide()
                self.setTabText(index, self._editor.text())
    
    class Window(QtGui.QTabWidget):
        def __init__(self):
            QtGui.QTabWidget.__init__(self)
            self.setTabBar(TabBar(self))
            self.addTab(QtGui.QWidget(self), 'Tab One')
            self.addTab(QtGui.QWidget(self), 'Tab Two')
    
    if __name__ == '__main__':
    
        import sys
        app = QtGui.QApplication(sys.argv)
        window = Window()
        window.setWindowTitle('Test')
        window.setGeometry(600, 100, 200, 100)
        window.show()
        sys.exit(app.exec_())