PyQt: Editable QTabWidget tab text
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13-04-2021 - |
Frage
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.
Lösung
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:
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_())
Andere Tipps
Update to the answer left by ekhumoro :
In PyQt5, the code now looks like this :
from PyQt5.QtCore import Qt, QEvent
from PyQt5.QtWidgets import QTabBar, QTabWidget, QApplication, QLineEdit, QWidget
class EditableTabBar(QTabBar):
def __init__(self, parent):
QTabBar.__init__(self, parent)
self._editor = QLineEdit(self)
self._editor.setWindowFlags(Qt.Popup)
self._editor.setFocusProxy(self)
self._editor.editingFinished.connect(self.handleEditingFinished)
self._editor.installEventFilter(self)
def eventFilter(self, widget, event):
if ((event.type() == QEvent.MouseButtonPress and not self._editor.geometry().contains(event.globalPos())) or (event.type() == QEvent.KeyPress and event.key() == Qt.Key_Escape)):
self._editor.hide()
return True
return 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(QTabWidget):
def __init__(self):
QTabWidget.__init__(self)
self.setTabBar(EditableTabBar(self))
self.addTab(QWidget(self), 'Tab One')
self.addTab(QWidget(self), 'Tab Two')
if __name__ == '__main__':
import sys
app = QApplication(sys.argv)
window = Window()
window.show()
sys.exit(app.exec_())
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