def eventFilter(self, obj, e):
'Redirect key presses from the popup to the widget'
widget = self.completer_widget()
if widget is None or sip.isdeleted(widget):
return False
etype = e.type()
if obj is not self:
return QObject.eventFilter(self, obj, e)
# self.debug_event(e)
if etype == e.KeyPress:
try:
key = e.key()
except AttributeError:
return QObject.eventFilter(self, obj, e)
if key == Qt.Key_Escape:
self.hide()
e.accept()
return True
if key == Qt.Key_F4 and e.modifiers() & Qt.AltModifier:
self.hide()
e.accept()
return True
if key in (Qt.Key_Enter, Qt.Key_Return):
# We handle this explicitly because on OS X activated() is
# not emitted on pressing Enter.
idx = self.currentIndex()
if idx.isValid():
self.item_chosen(idx)
self.hide()
e.accept()
return True
if key == Qt.Key_Tab:
idx = self.currentIndex()
if idx.isValid():
self.item_chosen(idx)
self.hide()
elif self.model().rowCount() > 0:
self.next_match()
e.accept()
return True
if key in (Qt.Key_PageUp, Qt.Key_PageDown):
# Let the list view handle these keys
return False
if key in (Qt.Key_Up, Qt.Key_Down):
self.next_match(previous=key == Qt.Key_Up)
e.accept()
return True
# Send to widget
widget.eat_focus_out = False
widget.keyPressEvent(e)
widget.eat_focus_out = True
if not widget.hasFocus():
# Widget lost focus hide the popup
self.hide()
if e.isAccepted():
return True
elif isosx and etype == e.InputMethodQuery and e.queries() == (
Qt.ImHints | Qt.ImEnabled) and self.isVisible():
# In Qt 5 the Esc key causes this event and the line edit does not
# handle it, which causes the parent dialog to be closed
# See https://bugreports.qt-project.org/browse/QTBUG-41806
e.accept()
return True
elif etype == e.MouseButtonPress and hasattr(
e, 'globalPos') and not self.rect().contains(
self.mapFromGlobal(e.globalPos())):
# A click outside the popup, close it
if isinstance(widget, QComboBox):
# This workaround is needed to ensure clicking on the drop down
# arrow of the combobox closes the popup
opt = QStyleOptionComboBox()
widget.initStyleOption(opt)
sc = widget.style().hitTestComplexControl(
QStyle.CC_ComboBox, opt,
widget.mapFromGlobal(e.globalPos()), widget)
if sc == QStyle.SC_ComboBoxArrow:
QTimer.singleShot(0, self.hide)
e.accept()
return True
self.hide()
e.accept()
return True
elif etype in (e.InputMethod, e.ShortcutOverride):
QApplication.sendEvent(widget, e)
return False
def updateEditorGeometry(self, editor, option, index):
if editor is None:
return
fm = editor.fontMetrics()
# get the original size of the edit widget
opt = QStyleOptionViewItem(option)
self.initStyleOption(opt, index)
opt.showDecorationSelected = True
opt.decorationSize = QSize(
0, 0) # We want the editor to cover the decoration
style = QApplication.style()
initial_geometry = style.subElementRect(style.SE_ItemViewItemText, opt,
None)
orig_width = initial_geometry.width()
# Compute the required width: the width that can show all of the current value
if hasattr(self, 'get_required_width'):
new_width = self.get_required_width(editor, style, fm)
else:
# The line edit box seems to extend by the space consumed by an 'M'.
# So add that to the text
text = self.displayText(index.data(Qt.DisplayRole),
QLocale()) + u'M'
srect = style.itemTextRect(fm, editor.geometry(), Qt.AlignLeft,
False, text)
new_width = srect.width()
# Now get the size of the combo/spinner arrows and add them to the needed width
if isinstance(editor, (QComboBox, QDateTimeEdit)):
r = style.subControlRect(QStyle.CC_ComboBox,
QStyleOptionComboBox(),
QStyle.SC_ComboBoxArrow, editor)
new_width += r.width()
elif isinstance(editor, (QSpinBox, QDoubleSpinBox)):
r = style.subControlRect(QStyle.CC_SpinBox, QStyleOptionSpinBox(),
QStyle.SC_SpinBoxUp, editor)
new_width += r.width()
# Compute the maximum we can show if we consume the entire viewport
max_width = (
self.table_widget.horizontalScrollBar().geometry().width() -
self.table_widget.verticalHeader().width())
# What we have to display might not fit. If so, adjust down
new_width = new_width if new_width < max_width else max_width
# See if we need to change the editor's geometry
if new_width <= orig_width:
delta_x = 0
delta_width = 0
else:
# Compute the space available from the left edge of the widget to
# the right edge of the displayed table (the viewport) and the left
# edge of the widget to the left edge of the viewport. These are
# used to position the edit box
space_left = initial_geometry.x()
space_right = max_width - space_left
if editor.layoutDirection() == Qt.RightToLeft:
# If language is RtL, align to the cell's right edge if possible
cw = initial_geometry.width()
consume_on_left = min(space_left, new_width - cw)
consume_on_right = max(0, new_width - (consume_on_left + cw))
delta_x = -consume_on_left
delta_width = consume_on_right
else:
# If language is LtR, align to the left if possible
consume_on_right = min(space_right, new_width)
consume_on_left = max(0, new_width - consume_on_right)
delta_x = -consume_on_left
delta_width = consume_on_right - initial_geometry.width()
initial_geometry.adjust(delta_x, 0, delta_width, 0)
editor.setGeometry(initial_geometry)
