widgets

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Classes to extend Qt GUI with widgets.

Classes

Name	Children	Inherits
GraphicsObjectMixin prettyqt.widgets.graphicsobject	GraphicsObject GraphicsTextItem GraphicsWidgetMixin GraphicsVideoItem GraphicsSvgItem	ObjectMixin GraphicsItemMixin
ToolBar prettyqt.widgets.toolbar	BreadCrumbsToolBar	ToolBarMixin QToolBar
GridLayout prettyqt.widgets.gridlayout		LayoutMixin QGridLayout
StyleOption prettyqt.widgets.styleoption		StyleOptionMixin QStyleOption
Application prettyqt.widgets.application		ApplicationMixin QApplication
StylePainter prettyqt.widgets.stylepainter		PainterMixin QStylePainter
GraphicsLayoutItem prettyqt.widgets.graphicslayoutitem		GraphicsLayoutItemMixin QGraphicsLayoutItem
GestureMixin prettyqt.widgets.gesture	Gesture TapGesture TapAndHoldGesture PanGesture PinchGesture SwipeGestureMixin	ObjectMixin
GraphicsPolygonItem prettyqt.widgets.graphicspolygonitem		AbstractGraphicsShapeItemMixin QGraphicsPolygonItem
AbstractButtonMixin prettyqt.widgets.abstractbutton Abstract button widget base class, providing functionality common to buttons.	AbstractButton PushButtonMixin ToolButton RadioButton CheckBox	WidgetMixin
TextEdit prettyqt.widgets.textedit	AutoResizeTextEdit	TextEditMixin QTextEdit
ColumnView prettyqt.widgets.columnview		AbstractItemViewMixin QColumnView
StyleOptionComplex prettyqt.widgets.styleoptioncomplex	StyleOptionGroupBox StyleOptionSpinBox StyleOptionTitleBar StyleOptionToolButton	StyleOptionComplexMixin QStyleOptionComplex
AbstractItemView prettyqt.widgets.abstractitemview		AbstractItemViewMixin QAbstractItemView
MdiSubWindow prettyqt.widgets.mdisubwindow		WidgetMixin QMdiSubWindow
TreeViewMixin prettyqt.widgets.treeview	TreeView TreeWidgetMixin HelpContentWidget	AbstractItemViewMixin
StyleOptionHeader prettyqt.widgets.styleoptionheader		StyleOptionMixin QStyleOptionHeader
GraphicsTransformMixin prettyqt.widgets.graphicstransform	GraphicsTransform GraphicsRotation GraphicsScale	ObjectMixin
StyleOptionSlider prettyqt.widgets.styleoptionslider		StyleOptionComplexMixin QStyleOptionSlider
SpinBox prettyqt.widgets.spinbox		AbstractSpinBoxMixin QSpinBox
ListView prettyqt.widgets.listview		ListViewMixin QListView
TreeView prettyqt.widgets.treeview	QObjectHierarchyTreeView ScrollAreaTocWidget FileTree	TreeViewMixin QTreeView
StyleOptionButton prettyqt.widgets.styleoptionbutton		StyleOptionMixin QStyleOptionButton
GraphicsTextItem prettyqt.widgets.graphicstextitem		GraphicsObjectMixin QGraphicsTextItem
MenuBar prettyqt.widgets.menubar		WidgetMixin QMenuBar
TextEditMixin prettyqt.widgets.textedit	TextEdit TextBrowser	AbstractScrollAreaMixin
ProgressDialog prettyqt.widgets.progressdialog		DialogMixin QProgressDialog
SizeGrip prettyqt.widgets.sizegrip		WidgetMixin QSizeGrip
StyleOptionFocusRect prettyqt.widgets.styleoptionfocusrect		StyleOptionMixin QStyleOptionFocusRect
StyleFactory prettyqt.widgets.stylefactory		QStyleFactory
AbstractGraphicsShapeItemMixin prettyqt.widgets.abstractgraphicsshapeitem	AbstractGraphicsShapeItem GraphicsRectItem GraphicsSimpleTextItem GraphicsPolygonItem GraphicsEllipseItem GraphicsPathItem	GraphicsItemMixin
TableViewMixin prettyqt.widgets.tableview	TableView TableWidgetMixin	AbstractItemViewMixin
TapGesture prettyqt.widgets.tapgesture		GestureMixin QTapGesture
GraphicsWidgetMixin prettyqt.widgets.graphicswidget	GraphicsWidget GraphicsProxyWidget Legend ChartMixin	GraphicsObjectMixin GraphicsLayoutItemMixin
Slider prettyqt.widgets.slider	SpanSlider	AbstractSliderMixin QSlider
DateTimeEditMixin prettyqt.widgets.datetimeedit Widget for editing dates and times.	DateTimeEdit DateEdit TimeEdit	AbstractSpinBoxMixin
ListViewMixin prettyqt.widgets.listview	ListView ListWidget UndoView HelpIndexWidget	AbstractItemViewMixin
FontDialog prettyqt.widgets.fontdialog		DialogMixin QFontDialog
StyleOptionFrame prettyqt.widgets.styleoptionframe		StyleOptionMixin QStyleOptionFrame
GraphicsItemMixin prettyqt.widgets.graphicsitem	GraphicsItem GraphicsItemGroup AbstractGraphicsShapeItemMixin GraphicsPixmapItem GraphicsObjectMixin GraphicsLineItem	object
AbstractItemDelegateMixin prettyqt.widgets.abstractitemdelegate	AbstractItemDelegate ItemDelegate StyledItemDelegate	ObjectMixin
Wizard prettyqt.widgets.wizard		WizardMixin QWizard
GraphicsLineItem prettyqt.widgets.graphicslineitem		GraphicsItemMixin QGraphicsLineItem
Dialog prettyqt.widgets.dialog	PopupInfo TracebackDialog	DialogMixin QDialog
ItemDelegate prettyqt.widgets.itemdelegate		AbstractItemDelegateMixin QItemDelegate
GraphicsEffect prettyqt.widgets.graphicseffect		GraphicsEffectMixin QGraphicsEffect
Frame prettyqt.widgets.frame	ElidedLabel CollapsibleFrame	FrameMixin QFrame
AbstractSlider prettyqt.widgets.abstractslider		AbstractSliderMixin QAbstractSlider
Label prettyqt.widgets.label	CPAlphaShowLabel ClickableLabel IconWidget	FrameMixin QLabel
LayoutItem prettyqt.widgets.layoutitem		LayoutItemMixin QLayoutItem
PlainTextDocumentLayout prettyqt.widgets.plaintextdocumentlayout		AbstractTextDocumentLayoutMixin QPlainTextDocumentLayout
GraphicsDropShadowEffect prettyqt.widgets.graphicsdropshadoweffect		GraphicsEffectMixin QGraphicsDropShadowEffect
StyleOptionSizeGrip prettyqt.widgets.styleoptionsizegrip		StyleOptionComplexMixin QStyleOptionSizeGrip
AbstractGraphicsShapeItem prettyqt.widgets.abstractgraphicsshapeitem		AbstractGraphicsShapeItemMixin QAbstractGraphicsShapeItem
Menu prettyqt.widgets.menu		MenuMixin QMenu
TableWidget prettyqt.widgets.tablewidget		TableWidgetMixin QTableWidget
Splitter prettyqt.widgets.splitter	AstViewer ProxyComparerWidget	SplitterMixin QSplitter
GraphicsPathItem prettyqt.widgets.graphicspathitem		AbstractGraphicsShapeItemMixin QGraphicsPathItem
LineEdit prettyqt.widgets.lineedit	ListInput IntLineEdit FloatLineEdit UrlLineEdit StringListEdit	WidgetMixin QLineEdit
StyleOptionToolButton prettyqt.widgets.styleoptiontoolbutton		StyleOptionComplex QStyleOptionToolButton
FileDialog prettyqt.widgets.filedialog		DialogMixin QFileDialog
ProxyStyle prettyqt.widgets.proxystyle	HollowHandleStyle	CommonStyleMixin QProxyStyle
StyleOptionGraphicsItem prettyqt.widgets.styleoptiongraphicsitem		StyleOptionMixin QStyleOptionGraphicsItem
GraphicsItem prettyqt.widgets.graphicsitem		GraphicsItemMixin QGraphicsItem
RadioButton prettyqt.widgets.radiobutton		AbstractButtonMixin QRadioButton
ScrollerProperties prettyqt.widgets.scrollerproperties		QScrollerProperties
WizardPage prettyqt.widgets.wizardpage		WizardPageMixin QWizardPage
GraphicsLinearLayout prettyqt.widgets.graphicslinearlayout		GraphicsLayoutMixin QGraphicsLinearLayout
MessageBox prettyqt.widgets.messagebox	ErrorMessageBox	DialogMixin QMessageBox
Style prettyqt.widgets.style		StyleMixin QStyle
MdiArea prettyqt.widgets.mdiarea		AbstractScrollAreaMixin QMdiArea
PlainTextEditMixin prettyqt.widgets.plaintextedit	PlainTextEdit	AbstractScrollAreaMixin
HBoxLayout prettyqt.widgets.hboxlayout		BoxLayoutMixin QHBoxLayout
GraphicsScene prettyqt.widgets.graphicsscene		ObjectMixin QGraphicsScene
HeaderView prettyqt.widgets.headerview	FilterHeader	HeaderViewMixin QHeaderView
FormLayout prettyqt.widgets.formlayout		LayoutMixin QFormLayout
PanGesture prettyqt.widgets.pangesture		GestureMixin QPanGesture
StyleOptionRubberBand prettyqt.widgets.styleoptionrubberband		StyleOptionMixin QStyleOptionRubberBand
StyleOptionGroupBox prettyqt.widgets.styleoptiongroupbox		StyleOptionComplex QStyleOptionGroupBox
GraphicsLayoutMixin prettyqt.widgets.graphicslayout	GraphicsLayout GraphicsGridLayout GraphicsLinearLayout GraphicsAnchorLayout	GraphicsLayoutItemMixin
StyledItemDelegate prettyqt.widgets.styleditemdelegate	ButtonDelegate BaseMarkupDelegate IconDelegate NoFocusDelegate ProgressBarDelegate RadioDelegate RenderLinkDelegate StarDelegate EditorDelegate WidgetDelegate ...	AbstractItemDelegateMixin QStyledItemDelegate
TapAndHoldGesture prettyqt.widgets.tapandholdgesture		GestureMixin QTapAndHoldGesture
GraphicsRectItem prettyqt.widgets.graphicsrectitem		AbstractGraphicsShapeItemMixin QGraphicsRectItem
AbstractItemViewMixin prettyqt.widgets.abstractitemview	AbstractItemView HeaderViewMixin ColumnView ListViewMixin TreeViewMixin TableViewMixin	AbstractScrollAreaMixin
Dial prettyqt.widgets.dial		AbstractSliderMixin QDial
StyleOptionTab prettyqt.widgets.styleoptiontab		StyleOptionMixin QStyleOptionTab
ComboBoxMixin prettyqt.widgets.combobox Combobox that lets the user select a font family.	ComboBox FontComboBox	WidgetMixin
GraphicsItemGroup prettyqt.widgets.graphicsitemgroup		GraphicsItemMixin QGraphicsItemGroup
LayoutItemMixin prettyqt.widgets.layoutitem	LayoutItem WidgetItem LayoutMixin SpacerItem	object
StackedWidget prettyqt.widgets.stackedwidget		FrameMixin QStackedWidget
StyleOptionDockWidget prettyqt.widgets.styleoptiondockwidget		StyleOptionMixin QStyleOptionDockWidget
FileIconProvider prettyqt.widgets.fileiconprovider		AbstractFileIconProviderMixin QFileIconProvider
StyleMixin prettyqt.widgets.style	Style CommonStyleMixin	ObjectMixin
ListWidgetItem prettyqt.widgets.listwidgetitem		SerializeMixin QListWidgetItem
ToolBox prettyqt.widgets.toolbox		FrameMixin QToolBox
GraphicsViewMixin prettyqt.widgets.graphicsview	GraphicsView ChartView	AbstractScrollAreaMixin
DoubleSpinBox prettyqt.widgets.doublespinbox		AbstractSpinBoxMixin QDoubleSpinBox
ScrollArea prettyqt.widgets.scrollarea		AbstractScrollAreaMixin QScrollArea
TreeWidget prettyqt.widgets.treewidget		TreeWidgetMixin QTreeWidget
PinchGesture prettyqt.widgets.pinchgesture		GestureMixin QPinchGesture
StyleOptionMixin prettyqt.widgets.styleoption	StyleOption StyleOptionButton StyleOptionComplexMixin StyleOptionDockWidget StyleOptionFocusRect StyleOptionFrame StyleOptionGraphicsItem StyleOptionHeader StyleOptionMenuItem StyleOptionProgressBar ...	object
CommonStyle prettyqt.widgets.commonstyle		CommonStyleMixin QCommonStyle
StyleOptionTitleBar prettyqt.widgets.styleoptiontitlebar		StyleOptionComplex QStyleOptionTitleBar
GraphicsLayout prettyqt.widgets.graphicslayout		GraphicsLayoutMixin QGraphicsLayout
BoxLayout prettyqt.widgets.boxlayout	MultiLineLayout	BoxLayoutMixin QBoxLayout
GraphicsWidget prettyqt.widgets.graphicswidget		GraphicsWidgetMixin QGraphicsWidget
ScrollBar prettyqt.widgets.scrollbar	AnnotatedScrollBar PreviewScrollBar SmoothScrollBar	ScrollBarMixin QScrollBar
InputDialog prettyqt.widgets.inputdialog		DialogMixin QInputDialog
StyleOptionTabBarBase prettyqt.widgets.styleoptiontabbarbase		StyleOptionMixin QStyleOptionTabBarBase
GraphicsObject prettyqt.widgets.graphicsobject		GraphicsObjectMixin QGraphicsObject
TableWidgetItem prettyqt.widgets.tablewidgetitem		QTableWidgetItem
UndoView prettyqt.widgets.undoview		ListViewMixin QUndoView
StyleOptionMenuItem prettyqt.widgets.styleoptionmenuitem		StyleOptionMixin QStyleOptionMenuItem
StyleOptionSpinBox prettyqt.widgets.styleoptionspinbox		StyleOptionComplex QStyleOptionSpinBox
DockWidget prettyqt.widgets.dockwidget		WidgetMixin QDockWidget
PlainTextEdit prettyqt.widgets.plaintextedit	AutoResizePlainTextEdit SingleLineTextEdit LogTextEdit CodeEditor	PlainTextEditMixin QPlainTextEdit
GraphicsView prettyqt.widgets.graphicsview		GraphicsViewMixin QGraphicsView
AbstractSliderMixin prettyqt.widgets.abstractslider	AbstractSlider ScrollBarMixin Slider Dial	WidgetMixin
StatusBar prettyqt.widgets.statusbar		WidgetMixin QStatusBar
SystemTrayIcon prettyqt.widgets.systemtrayicon		ObjectMixin QSystemTrayIcon
GraphicsColorizeEffect prettyqt.widgets.graphicscolorizeeffect		GraphicsEffectMixin QGraphicsColorizeEffect
PushButtonMixin prettyqt.widgets.pushbutton	PushButton CommandLinkButton	AbstractButtonMixin
WidgetAction prettyqt.widgets.widgetaction		ActionMixin QWidgetAction
LCDNumber prettyqt.widgets.lcdnumber		FrameMixin QLCDNumber
GraphicsEffectMixin prettyqt.widgets.graphicseffect	GraphicsEffect GraphicsBlurEffect GraphicsColorizeEffect GraphicsDropShadowEffect GraphicsOpacityEffect	ObjectMixin
GraphicsTransform prettyqt.widgets.graphicstransform		GraphicsTransformMixin QGraphicsTransform
TreeWidgetItem prettyqt.widgets.treewidgetitem		SerializeMixin QTreeWidgetItem
ColorDialog prettyqt.widgets.colordialog		DialogMixin QColorDialog
CommonStyleMixin prettyqt.widgets.commonstyle	CommonStyle ProxyStyle	StyleMixin
StyleOptionTabWidgetFrame prettyqt.widgets.styleoptiontabwidgetframe		StyleOptionMixin QStyleOptionTabWidgetFrame
AbstractSpinBox prettyqt.widgets.abstractspinbox		AbstractSpinBoxMixin QAbstractSpinBox
WidgetItem prettyqt.widgets.widgetitem		LayoutItemMixin QWidgetItem
Gesture prettyqt.widgets.gesture		GestureMixin QGesture
GraphicsAnchorLayout prettyqt.widgets.graphicsanchorlayout		GraphicsLayoutMixin QGraphicsAnchorLayout
TabBar prettyqt.widgets.tabbar		TabBarMixin QTabBar
TextBrowser prettyqt.widgets.textbrowser		TextEditMixin QTextBrowser
AbstractItemDelegate prettyqt.widgets.abstractitemdelegate		AbstractItemDelegateMixin QAbstractItemDelegate
Widget prettyqt.widgets.widget	CustomTitleBar StarEditor Separator IconLabel CrossFadeWidget FaderWidget ImageViewer WidgetEditor CommandPalette BrushEdit ...	WidgetMixin QWidget
AbstractSpinBoxMixin prettyqt.widgets.abstractspinbox	AbstractSpinBox SpinBox DoubleSpinBox DateTimeEditMixin	WidgetMixin
DateEdit prettyqt.widgets.dateedit		DateTimeEditMixin QDateEdit
TableWidgetSelectionRange prettyqt.widgets.tablewidgetselectionrange		QTableWidgetSelectionRange
SwipeGesture prettyqt.widgets.swipegesture		SwipeGestureMixin QSwipeGesture
StyleOptionToolBar prettyqt.widgets.styleoptiontoolbar		StyleOptionMixin QStyleOptionToolBar
AbstractButton prettyqt.widgets.abstractbutton		AbstractButtonMixin QAbstractButton
PushButton prettyqt.widgets.pushbutton		PushButtonMixin QPushButton
ToolTip prettyqt.widgets.tooltip		QToolTip
SplashScreen prettyqt.widgets.splashscreen		SplashScreenMixin QSplashScreen
GraphicsSimpleTextItem prettyqt.widgets.graphicssimpletextitem		AbstractGraphicsShapeItemMixin QGraphicsSimpleTextItem
FontComboBox prettyqt.widgets.fontcombobox		ComboBoxMixin QFontComboBox
GraphicsPixmapItem prettyqt.widgets.graphicspixmapitem		GraphicsItemMixin QGraphicsPixmapItem
ListWidget prettyqt.widgets.listwidget		ListViewMixin QListWidget
ButtonGroup prettyqt.widgets.buttongroup		ObjectMixin QButtonGroup
StyleOptionToolBox prettyqt.widgets.styleoptiontoolbox		StyleOptionMixin QStyleOptionToolBox
GraphicsRotation prettyqt.widgets.graphicsrotation		GraphicsTransformMixin QGraphicsRotation
TabWidget prettyqt.widgets.tabwidget		WidgetMixin QTabWidget
CalendarWidget prettyqt.widgets.calendarwidget		WidgetMixin QCalendarWidget
TreeWidgetItemIterator prettyqt.widgets.treewidgetitemiterator		QTreeWidgetItemIterator
DataWidgetMapper prettyqt.widgets.datawidgetmapper		ObjectMixin QDataWidgetMapper
StyleOptionProgressBar prettyqt.widgets.styleoptionprogressbar		StyleOptionMixin QStyleOptionProgressBar
AbstractScrollArea prettyqt.widgets.abstractscrollarea		AbstractScrollAreaMixin QAbstractScrollArea
ErrorMessage prettyqt.widgets.errormessage		DialogMixin QErrorMessage
CheckBox prettyqt.widgets.checkbox	MappedCheckBox	AbstractButtonMixin QCheckBox
Completer prettyqt.widgets.completer	SubsequenceCompleter	ObjectMixin QCompleter
VBoxLayout prettyqt.widgets.vboxlayout		BoxLayoutMixin QVBoxLayout
FrameMixin prettyqt.widgets.frame	Frame AbstractScrollAreaMixin Label LCDNumber ToolBox SplitterMixin StackedWidget	WidgetMixin
GraphicsBlurEffect prettyqt.widgets.graphicsblureffect		GraphicsEffectMixin QGraphicsBlurEffect
WhatsThis prettyqt.widgets.whatsthis		QWhatsThis
TimeEdit prettyqt.widgets.timeedit		DateTimeEditMixin QTimeEdit
Layout prettyqt.widgets.layout	FlowLayout BorderLayout	LayoutMixin QLayout
ItemEditorCreatorBase prettyqt.widgets.itemeditorcreatorbase		QItemEditorCreatorBase
GraphicsGridLayout prettyqt.widgets.graphicsgridlayout		GraphicsLayoutMixin QGraphicsGridLayout
AbstractScrollAreaMixin prettyqt.widgets.abstractscrollarea	AbstractScrollArea AbstractItemViewMixin ScrollArea GraphicsViewMixin MdiArea TextEditMixin PlainTextEditMixin PdfView	FrameMixin
DialogButtonBox prettyqt.widgets.dialogbuttonbox		WidgetMixin QDialogButtonBox
CommandLinkButton prettyqt.widgets.commandlinkbutton		PushButtonMixin QCommandLinkButton
SpacerItem prettyqt.widgets.spaceritem		LayoutItemMixin QSpacerItem
GraphicsEllipseItem prettyqt.widgets.graphicsellipseitem		AbstractGraphicsShapeItemMixin QGraphicsEllipseItem
KeySequenceEdit prettyqt.widgets.keysequenceedit		WidgetMixin QKeySequenceEdit
RubberBand prettyqt.widgets.rubberband		RubberBandMixin QRubberBand
DateTimeEdit prettyqt.widgets.datetimeedit		DateTimeEditMixin QDateTimeEdit
LayoutMixin prettyqt.widgets.layout	Layout FormLayout BoxLayoutMixin StackedLayout GridLayout	ObjectMixin LayoutItemMixin
GroupBox prettyqt.widgets.groupbox	OptionalWidget FlagSelectionWidget StringOrNumberWidget SelectionWidget	WidgetMixin QGroupBox
SizePolicy prettyqt.widgets.sizepolicy		QSizePolicy
StyleOptionViewItem prettyqt.widgets.styleoptionviewitem		StyleOptionMixin QStyleOptionViewItem
GraphicsLayoutItemMixin prettyqt.widgets.graphicslayoutitem	GraphicsLayoutItem GraphicsLayoutMixin GraphicsWidgetMixin	object
MainWindow prettyqt.widgets.mainwindow	DetachedTab IconBrowser ObjectBrowser SidebarWidget QObjectDetailsDialog	WidgetMixin QMainWindow
ProgressBar prettyqt.widgets.progressbar		WidgetMixin QProgressBar
Scroller prettyqt.widgets.scroller Enables kinetic scrolling for any scrolling widget or graphics item.		ObjectMixin
GraphicsProxyWidget prettyqt.widgets.graphicsproxywidget		GraphicsWidgetMixin QGraphicsProxyWidget
FileSystemModel prettyqt.widgets.filesystemmodel		FileSystemModelMixin AbstractItemModelMixin QFileSystemModel
WidgetMixin prettyqt.widgets.widget	Widget FrameMixin FocusFrame AbstractSliderMixin AbstractButtonMixin LineEdit AbstractSpinBoxMixin RubberBandMixin DialogButtonBox DialogMixin ...	ObjectMixin PaintDeviceMixin
StackedLayout prettyqt.widgets.stackedlayout		LayoutMixin QStackedLayout
StyleOptionComplexMixin prettyqt.widgets.styleoptioncomplex	StyleOptionComplex StyleOptionComboBox StyleOptionSizeGrip StyleOptionSlider	StyleOptionMixin
GraphicsScale prettyqt.widgets.graphicsscale		GraphicsTransformMixin QGraphicsScale
ToolButton prettyqt.widgets.toolbutton	BoolDictToolButton EnumFlagWidget	AbstractButtonMixin QToolButton
SplitterHandle prettyqt.widgets.splitterhandle		WidgetMixin QSplitterHandle
ItemEditorFactory prettyqt.widgets.itemeditorfactory		QItemEditorFactory
StyleOptionComboBox prettyqt.widgets.styleoptioncombobox		StyleOptionComplexMixin QStyleOptionComboBox
DialogMixin prettyqt.widgets.dialog	Dialog MessageBox ErrorMessage ProgressDialog FontDialog FileDialog ColorDialog InputDialog WizardMixin AbstractPrintDialogMixin ...	WidgetMixin
FocusFrame prettyqt.widgets.focusframe		WidgetMixin QFocusFrame
ComboBox prettyqt.widgets.combobox	EnumComboBox LocaleEdit ColorComboBox MultiComboBox	ComboBoxMixin QComboBox
TableView prettyqt.widgets.tableview	OrientedTableView QObjectPropertiesTableView LogRecordTableView CommandTable	TableViewMixin QTableView
GraphicsOpacityEffect prettyqt.widgets.graphicsopacityeffect		GraphicsEffectMixin QGraphicsOpacityEffect