def __updateGeometry(self):
"""
Update the shadow geometry to fit the widget's changed
geometry.
"""
widget = self.__widget
parent = self.__widgetParent
radius = self.radius_
pos = widget.pos()
if parent != widget.parentWidget():
pos = widget.parentWidget().mapTo(parent, pos)
geom = QRect(pos, widget.size())
geom.adjust(-radius, -radius, radius, radius)
if geom != self.geometry():
self.setGeometry(geom)
# Set the widget mask (punch a hole through to the `widget` instance.
rect = self.rect()
mask = QRegion(rect)
transparent = QRegion(rect.adjusted(radius, radius, -radius, -radius))
mask = mask.subtracted(transparent)
self.setMask(mask)
def __updateGeometry(self):
# type: () -> None
"""
Update the shadow geometry to fit the widget's changed
geometry.
"""
assert self.__widget is not None
widget = self.__widget
parent = self.__widgetParent
radius = self.radius_
offset = self.__offset
pos = widget.pos()
if parent is not None and parent != widget.parentWidget():
pos = widget.parentWidget().mapTo(parent, pos)
geom = QRect(pos, widget.size())
geom = geom.adjusted(-radius, -radius, radius, radius)
geom = geom.translated(offset)
if geom != self.geometry():
self.setGeometry(geom)
# Set the widget mask (punch a hole through to the `widget` instance.
rect = self.rect()
mask = QRegion(rect)
rect = rect.adjusted(radius, radius, -radius, -radius)
rect = rect.translated(-offset)
transparent = QRegion(rect)
mask = mask.subtracted(transparent)
self.setMask(mask)
def removeTab(self, index):
# type: (int) -> None
"""
Remove a tab at `index`.
"""
if 0 <= index < self.count():
tab = self.__tabs.pop(index)
layout_index = self.layout().indexOf(tab.button)
if layout_index != -1:
self.layout().takeAt(layout_index)
self.__group.removeButton(tab.button)
tab.button.removeEventFilter(self)
if tab.button is self.__sloppyButton:
self.__sloppyButton = None
self.__sloppyRegion = QRegion()
tab.button.deleteLater()
tab.button.setParent(None)
if self.currentIndex() == index:
if self.count():
self.setCurrentIndex(max(index - 1, 0))
else:
self.setCurrentIndex(-1)
def __init__(self, parent=None, **kwargs):
# type: (Optional[QWidget], Any) -> None
super().__init__(parent, **kwargs)
layout = QVBoxLayout()
layout.setContentsMargins(0, 0, 0, 0)
layout.setSpacing(0)
self.setLayout(layout)
self.setSizePolicy(QSizePolicy.Fixed, QSizePolicy.Expanding)
self.__tabs = [] # type: List[_Tab]
self.__currentIndex = -1
self.__changeOnHover = False
self.__iconSize = QSize(26, 26)
self.__group = QButtonGroup(self, exclusive=True)
self.__group.buttonPressed[QAbstractButton].connect(
self.__onButtonPressed)
self.setMouseTracking(True)
self.__sloppyButton = None # type: Optional[QAbstractButton]
self.__sloppyRegion = QRegion()
self.__sloppyTimer = QTimer(self, singleShot=True)
self.__sloppyTimer.timeout.connect(self.__onSloppyTimeout)
def __calcSloppyRegion(self, current):
# type: (QPoint) -> QRegion
"""
Given a current mouse cursor position return a region of the widget
where hover/move events should change the current tab only on a
timeout.
"""
p1 = current + QPoint(0, 2)
p2 = current + QPoint(0, -2)
p3 = self.pos() + QPoint(self.width() + 10, 0)
p4 = self.pos() + QPoint(self.width() + 10, self.height())
return QRegion(QPolygon([p1, p2, p3, p4]))
def setCurrentIndex(self, index):
"""
Set the current tab index.
"""
if self.__currentIndex != index:
self.__currentIndex = index
self.__sloppyRegion = QRegion()
self.__sloppyButton = None
if index != -1:
self.__tabs[index].button.setChecked(True)
self.currentChanged.emit(index)
def removeTab(self, index):
"""
Remove a tab at `index`.
"""
if index >= 0 and index < self.count():
self.layout().takeItem(index)
tab = self.__tabs.pop(index)
self.__group.removeButton(tab.button)
tab.button.removeEventFilter(self)
if tab.button is self.__sloppyButton:
self.__sloppyButton = None
self.__sloppyRegion = QRegion()
tab.button.deleteLater()
if self.currentIndex() == index:
if self.count():
self.setCurrentIndex(max(index - 1, 0))
else:
self.setCurrentIndex(-1)
def leaveEvent(self, event):
self.__sloppyButton = None
self.__sloppyRegion = QRegion()
return super().leaveEvent(event)
def leaveEvent(self, event):
self.__sloppyButton = None
self.__sloppyRegion = QRegion()
return QWidget.leaveEvent(self, event)
