def mouseMoveEvent(self, event):
"""
Override the behaviour when the mouse is moved
Doing this we avoid that the tab is moved when tearing off the tab
"""
if self._select_tab_index < -1:
pass
else:
if event.modifiers() == Qt.ControlModifier:
self.setCursor(Qt.OpenHandCursor)
else:
self.setCursor(Qt.ArrowCursor)
if not event.buttons() == Qt.LeftButton:
return
if not self._drag_start_pos.isNull() and (
event.pos() - self._drag_start_pos
).manhattanLength() < QApplication.startDragDistance():
self._drag_initiated = True
if (event.buttons() == Qt.LeftButton
) and self._drag_initiated and not self.geometry().contains(
event.pos()):
finish_move_event = QMouseEvent(QEvent.MouseMove, event.pos(),
Qt.NoButton, Qt.NoButton,
Qt.NoModifier)
super(TearOffTabBar, self).mouseMoveEvent(finish_move_event)
drag = QDrag(self)
mime_data = QMimeData()
mime_data.setData('action', 'application/tab-detach')
drag.setMimeData(mime_data)
rect = self.tabRect(self.tabAt(event.pos()))
pixmap_big = QPixmap.grabWidget(
self.parentWidget().currentWidget()).scaled(
640, 480, Qt.KeepAspectRatio)
drag.setPixmap(pixmap_big)
drag.setDragCursor(QPixmap(), Qt.LinkAction)
dragged = drag.exec_(Qt.MoveAction)
if dragged == Qt.IgnoreAction:
# moved outside of tab widget
event.accept()
self.tabDetached.emit(self.tabAt(self._drag_start_pos),
QCursor.pos())
elif dragged == Qt.MoveAction:
# moved inside of tab widget
if not self._drag_dropped_pos.isNull():
event.accept()
self.tabMoved.emit(self.tabAt(self._drag_start_pos),
self.tabAt(self._drag_dropped_pos))
self._drag_dropped_pos = QPoint()
else:
super(TearOffTabBar, self).mouseMoveEvent(event)
def startDrag(self, supported_actions):
"""
Function that is called when we start dragging an item
This function set ups the mime data and creates a copy of the image
of the item that is show in cursor position while dragging action
is enabled
"""
index = self.currentIndex()
model = self.model()
item = model.itemFromIndex(index)
drag = QDrag(self)
mime_data = QMimeData()
mime_data.setData('item_text', QByteArray(str(item.text())))
mime_data.setData('item_size', QByteArray('%.1f %.1f' % (item.size.width(), item.size.height())))
url = QUrl.fromLocalFile(item.text())
mime_data.setUrls(url)
drag.setMimeData(mime_data)
pixmap = item.icon().pixmap(50, 50)
drag.setDragCursor(pixmap, Qt.CopyAction)
drag.start()