CopperSpice API  1.7.2
QGraphicsWidget Class Reference

The QGraphicsWidget class is the base class for all widget items in a QGraphicsScene. More...

Inheritance diagram for QGraphicsWidget:
QGraphicsObject QGraphicsLayoutItem QObject QGraphicsItem QGraphicsProxyWidget QGraphicsWebView

Public Signals

void geometryChanged ()
 
- Public Signals inherited from QGraphicsObject
void enabledChanged ()
 
void opacityChanged ()
 
void parentChanged ()
 
void rotationChanged ()
 
void scaleChanged ()
 
void visibleChanged ()
 
void xChanged ()
 
void yChanged ()
 
void zChanged ()
 
- Public Signals inherited from QObject
void destroyed (QObject *obj=nullptr)
 
void objectNameChanged (const QString &objectName)
 

Public Slots

bool close ()
 
- Public Slots inherited from QObject
void deleteLater ()
 

Public Methods

 QGraphicsWidget (QGraphicsItem *parent=nullptr, Qt::WindowFlags flags=Qt::EmptyFlag)
 
 ~QGraphicsWidget ()
 
QList< QAction * > actions () const
 
void addAction (QAction *action)
 
void addActions (const QList< QAction * > &actions)
 
void adjustSize ()
 
bool autoFillBackground () const
 
QRectF boundingRect () const override
 
const QList< QObject * > & children () const
 
Qt::FocusPolicy focusPolicy () const
 
QGraphicsWidget * focusWidget () const
 
QFont font () const
 
void getContentsMargins (qreal *left, qreal *top, qreal *right, qreal *bottom) const override
 
void getWindowFrameMargins (qreal *left, qreal *top, qreal *right, qreal *bottom) const
 
int grabShortcut (const QKeySequence &sequence, Qt::ShortcutContext context=Qt::WindowShortcut)
 
void insertAction (QAction *before, QAction *action)
 
void insertActions (QAction *before, QList< QAction * > actions)
 
bool isActiveWindow () const
 
QGraphicsLayoutlayout () const
 
Qt::LayoutDirection layoutDirection () const
 
void paint (QPainter *painter, const QStyleOptionGraphicsItem *option, QWidget *widget=nullptr) override
 
virtual void paintWindowFrame (QPainter *painter, const QStyleOptionGraphicsItem *option, QWidget *widget=nullptr)
 
QPalette palette () const
 
QRectF rect () const
 
void releaseShortcut (int id)
 
void removeAction (QAction *action)
 
void resize (const QSizeF &size)
 
void resize (qreal width, qreal height)
 
void setAttribute (Qt::WidgetAttribute attribute, bool on=true)
 
void setAutoFillBackground (bool enabled)
 
void setContentsMargins (qreal left, qreal top, qreal right, qreal bottom)
 
void setFocusPolicy (Qt::FocusPolicy policy)
 
void setFont (const QFont &font)
 
void setGeometry (const QRectF &rect) override
 
void setGeometry (qreal x, qreal y, qreal width, qreal height)
 
void setLayout (QGraphicsLayout *layout)
 
void setLayoutDirection (Qt::LayoutDirection direction)
 
void setPalette (const QPalette &palette)
 
void setShortcutAutoRepeat (int id, bool enabled=true)
 
void setShortcutEnabled (int id, bool enabled=true)
 
void setStyle (QStyle *style)
 
void setWindowFlags (Qt::WindowFlags flags)
 
void setWindowFrameMargins (qreal left, qreal top, qreal right, qreal bottom)
 
void setWindowTitle (const QString &title)
 
QPainterPath shape () const override
 
QSizeF size () const
 
QStylestyle () const
 
bool testAttribute (Qt::WidgetAttribute attribute) const
 
int type () const override
 
void unsetLayoutDirection ()
 
void unsetWindowFrameMargins ()
 
Qt::WindowFlags windowFlags () const
 
QRectF windowFrameGeometry () const
 
QRectF windowFrameRect () const
 
QString windowTitle () const
 
Qt::WindowType windowType () const
 
- Public Methods inherited from QGraphicsObject
 QGraphicsObject (QGraphicsItem *parent=nullptr)
 
const QList< QObject * > & children () const
 
void grabGesture (Qt::GestureType gesture, Qt::GestureFlags flags=Qt::GestureFlags ())
 
void ungrabGesture (Qt::GestureType gesture)
 
- Public Methods inherited from QObject
 QObject (QObject *parent=nullptr)
 
 ~QObject ()
 
bool blockSignals (bool block)
 
const QList< QObject * > & children () const
 
bool connect (const QObject *sender, const QString &signalMethod, const QString &location, const QString &slotMethod, Qt::ConnectionType type=Qt::AutoConnection)
 
bool connect (const QObject *sender, const QString &signalMethod, const QString &slotMethod, Qt::ConnectionType type=Qt::AutoConnection)
 
bool disconnect (const QObject *receiver, const QString &slotMethod=QString ()) const
 
bool disconnect (const QString &signalMethod, const QString &location, const QObject *receiver=nullptr, const QString &slotMethod=QString ()) const
 
bool disconnect (const QString &signalMethod=QString (), const QObject *receiver=nullptr, const QString &slotMethod=QString ()) const
 
void dumpObjectInfo ()
 
void dumpObjectTree ()
 
QList< QStringdynamicPropertyNames () const
 
virtual bool event (QEvent *event)
 
virtual bool eventFilter (QObject *watched, QEvent *event)
 
template<typename T >
findChild (const QString &childName=QString ()) const
 
template<class T >
QList< T > findChildren (const QRegularExpression &regExp, Qt::FindChildOptions options=Qt::FindChildrenRecursively) const
 
template<class T >
QList< T > findChildren (const QString &objName=QString (), Qt::FindChildOptions options=Qt::FindChildrenRecursively) const
 
bool inherits (const QString &className) const
 
void installEventFilter (QObject *filterObj)
 
bool isWidgetType () const
 
bool isWindowType () const
 
void killTimer (int id)
 
const QMetaObjectmetaObject () const
 
void moveToThread (QThread *targetThread)
 
QString objectName () const
 
QObject * parent () const
 
template<class T = QVariant>
property (const QString &name) const
 
void removeEventFilter (QObject *obj)
 
void setObjectName (const QString &name)
 
void setParent (QObject *parent)
 
bool setProperty (const QString &name, const QVariant &value)
 
bool signalsBlocked () const
 
int startTimer (int interval, Qt::TimerType timerType=Qt::CoarseTimer)
 
QThreadthread () const
 
- Public Methods inherited from QGraphicsItem
 QGraphicsItem (QGraphicsItem *parent=nullptr)
 
virtual ~QGraphicsItem ()
 
bool acceptDrops () const
 
Qt::MouseButtons acceptedMouseButtons () const
 
bool acceptHoverEvents () const
 
bool acceptTouchEvents () const
 
virtual void advance (int phase)
 
virtual QRectF boundingRect () const = 0
 
QRegion boundingRegion (const QTransform &itemToDeviceTransform) const
 
qreal boundingRegionGranularity () const
 
CacheMode cacheMode () const
 
QList< QGraphicsItem * > childItems () const
 
QRectF childrenBoundingRect () const
 
void clearFocus ()
 
QPainterPath clipPath () const
 
virtual bool collidesWithItem (const QGraphicsItem *graphicsItem, Qt::ItemSelectionMode mode=Qt::IntersectsItemShape) const
 
virtual bool collidesWithPath (const QPainterPath &path, Qt::ItemSelectionMode mode=Qt::IntersectsItemShape) const
 
QList< QGraphicsItem * > collidingItems (Qt::ItemSelectionMode mode=Qt::IntersectsItemShape) const
 
QGraphicsItem * commonAncestorItem (const QGraphicsItem *graphicsItem) const
 
virtual bool contains (const QPointF &point) const
 
QCursor cursor () const
 
QVariant data (int key) const
 
QTransform deviceTransform (const QTransform &viewportTransform) const
 
qreal effectiveOpacity () const
 
void ensureVisible (const QRectF &rectF=QRectF (), int xmargin=50, int ymargin=50)
 
void ensureVisible (qreal x, qreal y, qreal width, qreal height, int xmargin=50, int ymargin=50)
 
bool filtersChildEvents () const
 
GraphicsItemFlags flags () const
 
QGraphicsItem * focusItem () const
 
QGraphicsItem * focusProxy () const
 
void grabKeyboard ()
 
void grabMouse ()
 
QGraphicsEffectgraphicsEffect () const
 
QGraphicsItemGroupgroup () const
 
bool handlesChildEvents () const
 
bool hasCursor () const
 
bool hasFocus () const
 
void hide ()
 
Qt::InputMethodHints inputMethodHints () const
 
void installSceneEventFilter (QGraphicsItem *filterItem)
 
bool isActive () const
 
bool isAncestorOf (const QGraphicsItem *graphicsItem) const
 
bool isBlockedByModalPanel (QGraphicsItem **blockingPanel=nullptr) const
 
bool isClipped () const
 
bool isEnabled () const
 
bool isObscured (const QRectF &rectF=QRectF ()) const
 
bool isObscured (qreal x, qreal y, qreal width, qreal height) const
 
virtual bool isObscuredBy (const QGraphicsItem *graphicsItem) const
 
bool isPanel () const
 
bool isSelected () const
 
bool isUnderMouse () const
 
bool isVisible () const
 
bool isVisibleTo (const QGraphicsItem *graphicsItem) const
 
bool isWidget () const
 
bool isWindow () const
 
QTransform itemTransform (const QGraphicsItem *graphicsItem, bool *ok=nullptr) const
 
QPainterPath mapFromItem (const QGraphicsItem *graphicsItem, const QPainterPath &path) const
 
QPointF mapFromItem (const QGraphicsItem *graphicsItem, const QPointF &point) const
 
QPolygonF mapFromItem (const QGraphicsItem *graphicsItem, const QPolygonF &polygon) const
 
QPolygonF mapFromItem (const QGraphicsItem *graphicsItem, const QRectF &rectF) const
 
QPointF mapFromItem (const QGraphicsItem *graphicsItem, qreal x, qreal y) const
 
QPolygonF mapFromItem (const QGraphicsItem *graphicsItem, qreal x, qreal y, qreal width, qreal height) const
 
QPainterPath mapFromParent (const QPainterPath &path) const
 
QPointF mapFromParent (const QPointF &point) const
 
QPolygonF mapFromParent (const QPolygonF &polygon) const
 
QPolygonF mapFromParent (const QRectF &rectF) const
 
QPointF mapFromParent (qreal x, qreal y) const
 
QPolygonF mapFromParent (qreal x, qreal y, qreal width, qreal height) const
 
QPainterPath mapFromScene (const QPainterPath &path) const
 
QPointF mapFromScene (const QPointF &point) const
 
QPolygonF mapFromScene (const QPolygonF &polygon) const
 
QPolygonF mapFromScene (const QRectF &rectF) const
 
QPointF mapFromScene (qreal x, qreal y) const
 
QPolygonF mapFromScene (qreal x, qreal y, qreal width, qreal height) const
 
QRectF mapRectFromItem (const QGraphicsItem *graphicsItem, const QRectF &rectF) const
 
QRectF mapRectFromItem (const QGraphicsItem *graphicsItem, qreal x, qreal y, qreal width, qreal height) const
 
QRectF mapRectFromParent (const QRectF &rectF) const
 
QRectF mapRectFromParent (qreal x, qreal y, qreal width, qreal height) const
 
QRectF mapRectFromScene (const QRectF &rectF) const
 
QRectF mapRectFromScene (qreal x, qreal y, qreal width, qreal height) const
 
QRectF mapRectToItem (const QGraphicsItem *graphicsItem, const QRectF &rectF) const
 
QRectF mapRectToItem (const QGraphicsItem *graphicsItem, qreal x, qreal y, qreal width, qreal height) const
 
QRectF mapRectToParent (const QRectF &rectF) const
 
QRectF mapRectToParent (qreal x, qreal y, qreal width, qreal height) const
 
QRectF mapRectToScene (const QRectF &rectF) const
 
QRectF mapRectToScene (qreal x, qreal y, qreal width, qreal height) const
 
QPainterPath mapToItem (const QGraphicsItem *graphicsItem, const QPainterPath &path) const
 
QPointF mapToItem (const QGraphicsItem *graphicsItem, const QPointF &point) const
 
QPolygonF mapToItem (const QGraphicsItem *graphicsItem, const QPolygonF &polygon) const
 
QPolygonF mapToItem (const QGraphicsItem *graphicsItem, const QRectF &rectF) const
 
QPointF mapToItem (const QGraphicsItem *graphicsItem, qreal x, qreal y) const
 
QPolygonF mapToItem (const QGraphicsItem *graphicsItem, qreal x, qreal y, qreal width, qreal height) const
 
QPainterPath mapToParent (const QPainterPath &path) const
 
QPointF mapToParent (const QPointF &point) const
 
QPolygonF mapToParent (const QPolygonF &polygon) const
 
QPolygonF mapToParent (const QRectF &rectF) const
 
QPointF mapToParent (qreal x, qreal y) const
 
QPolygonF mapToParent (qreal x, qreal y, qreal width, qreal height) const
 
QPainterPath mapToScene (const QPainterPath &path) const
 
QPointF mapToScene (const QPointF &point) const
 
QPolygonF mapToScene (const QPolygonF &polygon) const
 
QPolygonF mapToScene (const QRectF &rectF) const
 
QPointF mapToScene (qreal x, qreal y) const
 
QPolygonF mapToScene (qreal x, qreal y, qreal width, qreal height) const
 
QMatrix matrix () const
 
void moveBy (qreal dx, qreal dy)
 
qreal opacity () const
 
virtual QPainterPath opaqueArea () const
 
virtual void paint (QPainter *painter, const QStyleOptionGraphicsItem *option, QWidget *widget=nullptr) = 0
 
QGraphicsItem * panel () const
 
PanelModality panelModality () const
 
QGraphicsItem * parentItem () const
 
QGraphicsObjectparentObject () const
 
QGraphicsWidgetparentWidget () const
 
QPointF pos () const
 
void removeSceneEventFilter (QGraphicsItem *filterItem)
 
void resetMatrix ()
 
void resetTransform ()
 
qreal rotation () const
 
qreal scale () const
 
QGraphicsScenescene () const
 
QRectF sceneBoundingRect () const
 
QMatrix sceneMatrix () const
 
QPointF scenePos () const
 
QTransform sceneTransform () const
 
void scroll (qreal dx, qreal dy, const QRectF &rectF=QRectF ())
 
void setAcceptDrops (bool on)
 
void setAcceptedMouseButtons (Qt::MouseButtons buttons)
 
void setAcceptHoverEvents (bool enabled)
 
void setAcceptTouchEvents (bool enabled)
 
void setActive (bool active)
 
void setBoundingRegionGranularity (qreal granularity)
 
void setCacheMode (CacheMode mode, const QSize &cacheSize=QSize ())
 
void setCursor (const QCursor &cursor)
 
void setData (int key, const QVariant &value)
 
void setEnabled (bool enabled)
 
void setFiltersChildEvents (bool enabled)
 
void setFlag (GraphicsItemFlag flag, bool enabled=true)
 
void setFlags (GraphicsItemFlags flags)
 
void setFocus (Qt::FocusReason focusReason=Qt::OtherFocusReason)
 
void setFocusProxy (QGraphicsItem *graphicsItem)
 
void setGraphicsEffect (QGraphicsEffect *effect)
 
void setGroup (QGraphicsItemGroup *group)
 
void setHandlesChildEvents (bool enabled)
 
void setInputMethodHints (Qt::InputMethodHints hints)
 
void setMatrix (const QMatrix &matrix, bool combine=false)
 
void setOpacity (qreal opacity)
 
void setPanelModality (PanelModality panelModality)
 
void setParentItem (QGraphicsItem *parent)
 
void setPos (const QPointF &pos)
 
void setPos (qreal x, qreal y)
 
void setRotation (qreal angle)
 
void setScale (qreal factor)
 
void setSelected (bool selected)
 
void setToolTip (const QString &toolTip)
 
void setTransform (const QTransform &matrix, bool combine=false)
 
void setTransformations (const QList< QGraphicsTransform * > &transformations)
 
void setTransformOriginPoint (const QPointF &origin)
 
void setTransformOriginPoint (qreal x, qreal y)
 
void setVisible (bool visible)
 
void setX (qreal x)
 
void setY (qreal y)
 
void setZValue (qreal z)
 
virtual QPainterPath shape () const
 
void show ()
 
void stackBefore (const QGraphicsItem *graphicsItem)
 
QGraphicsObjecttoGraphicsObject ()
 
const QGraphicsObjecttoGraphicsObject () const
 
QString toolTip () const
 
QGraphicsItem * topLevelItem () const
 
QGraphicsWidgettopLevelWidget () const
 
QTransform transform () const
 
QList< QGraphicsTransform * > transformations () const
 
QPointF transformOriginPoint () const
 
virtual int type () const
 
void ungrabKeyboard ()
 
void ungrabMouse ()
 
void unsetCursor ()
 
void update (const QRectF &rectF=QRectF ())
 
void update (qreal x, qreal y, qreal width, qreal height)
 
QGraphicsWidgetwindow () const
 
qreal x () const
 
qreal y () const
 
qreal zValue () const
 
- Public Methods inherited from QGraphicsLayoutItem
 QGraphicsLayoutItem (QGraphicsLayoutItem *parent=nullptr, bool isLayout=false)
 
virtual ~QGraphicsLayoutItem ()
 
QRectF contentsRect () const
 
QSizeF effectiveSizeHint (Qt::SizeHint which, const QSizeF &constraint=QSizeF ()) const
 
QRectF geometry () const
 
QGraphicsItemgraphicsItem () const
 
bool isLayout () const
 
qreal maximumHeight () const
 
QSizeF maximumSize () const
 
qreal maximumWidth () const
 
qreal minimumHeight () const
 
QSizeF minimumSize () const
 
qreal minimumWidth () const
 
bool ownedByLayout () const
 
QGraphicsLayoutItem * parentLayoutItem () const
 
qreal preferredHeight () const
 
QSizeF preferredSize () const
 
qreal preferredWidth () const
 
void setMaximumHeight (qreal height)
 
void setMaximumSize (const QSizeF &size)
 
void setMaximumSize (qreal w, qreal h)
 
void setMaximumWidth (qreal width)
 
void setMinimumHeight (qreal height)
 
void setMinimumSize (const QSizeF &size)
 
void setMinimumSize (qreal w, qreal h)
 
void setMinimumWidth (qreal width)
 
void setParentLayoutItem (QGraphicsLayoutItem *parent)
 
void setPreferredHeight (qreal height)
 
void setPreferredSize (const QSizeF &size)
 
void setPreferredSize (qreal w, qreal h)
 
void setPreferredWidth (qreal width)
 
void setSizePolicy (const QSizePolicy &policy)
 
void setSizePolicy (QSizePolicy::Policy hPolicy, QSizePolicy::Policy vPolicy, QSizePolicy::ControlType controlType=QSizePolicy::DefaultType)
 
QSizePolicy sizePolicy () const
 

Static Public Methods

static void setTabOrder (QGraphicsWidget *first, QGraphicsWidget *second)
 
- Static Public Methods inherited from QObject
static bool connect (const QObject *sender, const QMetaMethod &signalMethod, const QObject *receiver, const QMetaMethod &slotMethod, Qt::ConnectionType type=Qt::AutoConnection)
 
static bool connect (const QObject *sender, const QString &signalMethod, const QObject *receiver, const QString &slotMethod, Qt::ConnectionType type=Qt::AutoConnection, const QString &location=QString ())
 
static bool connect (const QObject *sender, const QString &signalMethod, const QString &location, const QObject *receiver, const QString &slotMethod, Qt::ConnectionType type=Qt::AutoConnection)
 
template<class Sender , class SignalClass , class... SignalArgs, class Receiver , class SlotClass , class... SlotArgs, class SlotReturn >
static bool connect (const Sender *sender, void (SignalClass::*signalMethod)(SignalArgs...), const Receiver *receiver, SlotReturn (SlotClass::*slotMethod)(SlotArgs...), Qt::ConnectionType type=Qt::AutoConnection)
 
template<class Sender , class SignalClass , class... SignalArgs, class Receiver , class T >
static bool connect (const Sender *sender, void (SignalClass::*signalMethod)(SignalArgs...), const Receiver *receiver, T slotLambda, Qt::ConnectionType type=Qt::AutoConnection)
 
static bool disconnect (const QObject *sender, const QMetaMethod &signalMethod, const QObject *receiver, const QMetaMethod &slotMethod)
 
static bool disconnect (const QObject *sender, const QString &signalMethod, const QObject *receiver, const QString &slotMethod)
 
static bool disconnect (const QObject *sender, const QString &signalMethod, const QString &location, const QObject *receiver, const QString &slotMethod)
 
template<class Sender , class SignalClass , class... SignalArgs, class Receiver , class SlotClass , class... SlotArgs, class SlotReturn >
static bool disconnect (const Sender *sender, void (SignalClass::*signalMethod)(SignalArgs...), const Receiver *receiver, SlotReturn (SlotClass::*slotMethod)(SlotArgs...))
 
template<class Sender , class SignalClass , class... SignalArgs, class Receiver >
static bool disconnect (const Sender *sender, void (SignalClass::*signalMethod)(SignalArgs...), const Receiver *receiver, std::nullptr_t slotMethod=nullptr)
 
template<class Sender , class SignalClass , class... SignalArgs, class Receiver , class T >
static bool disconnect (const Sender *sender, void (SignalClass::*signalMethod)(SignalArgs...), const Receiver *receiver, T slotMethod)
 
static QMetaObjectstaticMetaObject ()
 
static QString tr (const char *text, const char *comment=nullptr, std::optional< int > numArg=std::optional< int >())
 

Protected Methods

virtual void changeEvent (QEvent *event)
 
virtual void closeEvent (QCloseEvent *event)
 
bool event (QEvent *event) override
 
void focusInEvent (QFocusEvent *event) override
 
virtual bool focusNextPrevChild (bool next)
 
void focusOutEvent (QFocusEvent *event) override
 
virtual void grabKeyboardEvent (QEvent *event)
 
virtual void grabMouseEvent (QEvent *event)
 
virtual void hideEvent (QHideEvent *event)
 
void hoverLeaveEvent (QGraphicsSceneHoverEvent *event) override
 
void hoverMoveEvent (QGraphicsSceneHoverEvent *event) override
 
virtual void initStyleOption (QStyleOption *option) const
 
QVariant itemChange (GraphicsItemChange change, const QVariant &value) override
 
virtual void moveEvent (QGraphicsSceneMoveEvent *event)
 
virtual void polishEvent ()
 
virtual void resizeEvent (QGraphicsSceneResizeEvent *event)
 
bool sceneEvent (QEvent *event) override
 
virtual void showEvent (QShowEvent *event)
 
QSizeF sizeHint (Qt::SizeHint which, const QSizeF &constraint=QSizeF ()) const override
 
virtual void ungrabKeyboardEvent (QEvent *event)
 
virtual void ungrabMouseEvent (QEvent *event)
 
void updateGeometry () override
 
virtual bool windowFrameEvent (QEvent *event)
 
virtual Qt::WindowFrameSection windowFrameSectionAt (const QPointF &pos) const
 
- Protected Methods inherited from QObject
virtual void childEvent (QChildEvent *event)
 
virtual void connectNotify (const QMetaMethod &signalMethod) const
 
virtual void customEvent (QEvent *event)
 
virtual void disconnectNotify (const QMetaMethod &signalMethod) const
 
bool isSignalConnected (const QMetaMethod &signalMethod) const
 
int receivers (const QString &signal) const
 
QObject * sender () const
 
int senderSignalIndex () const
 
virtual void timerEvent (QTimerEvent *event)
 
- Protected Methods inherited from QGraphicsItem
virtual void contextMenuEvent (QGraphicsSceneContextMenuEvent *event)
 
virtual void dragEnterEvent (QGraphicsSceneDragDropEvent *event)
 
virtual void dragLeaveEvent (QGraphicsSceneDragDropEvent *event)
 
virtual void dragMoveEvent (QGraphicsSceneDragDropEvent *event)
 
virtual void dropEvent (QGraphicsSceneDragDropEvent *event)
 
virtual void focusInEvent (QFocusEvent *event)
 
virtual void focusOutEvent (QFocusEvent *event)
 
virtual void hoverEnterEvent (QGraphicsSceneHoverEvent *event)
 
virtual void hoverLeaveEvent (QGraphicsSceneHoverEvent *event)
 
virtual void hoverMoveEvent (QGraphicsSceneHoverEvent *event)
 
virtual void inputMethodEvent (QInputMethodEvent *event)
 
virtual QVariant inputMethodQuery (Qt::InputMethodQuery query) const
 
virtual QVariant itemChange (GraphicsItemChange change, const QVariant &value)
 
virtual void keyPressEvent (QKeyEvent *event)
 
virtual void keyReleaseEvent (QKeyEvent *event)
 
virtual void mouseDoubleClickEvent (QGraphicsSceneMouseEvent *event)
 
virtual void mouseMoveEvent (QGraphicsSceneMouseEvent *event)
 
virtual void mousePressEvent (QGraphicsSceneMouseEvent *event)
 
virtual void mouseReleaseEvent (QGraphicsSceneMouseEvent *event)
 
void prepareGeometryChange ()
 
virtual bool sceneEvent (QEvent *event)
 
virtual bool sceneEventFilter (QGraphicsItem *watched, QEvent *event)
 
void updateMicroFocus ()
 
virtual void wheelEvent (QGraphicsSceneWheelEvent *event)
 
- Protected Methods inherited from QGraphicsLayoutItem
void setGraphicsItem (QGraphicsItem *item)
 
void setOwnedByLayout (bool owner)
 

Properties

 autoFillBackground
 
 focusPolicy
 
 font
 
 geometry
 
 layout
 
 layoutDirection
 
 maximumSize
 
 minimumSize
 
 palette
 
 preferredSize
 
 size
 
 sizePolicy
 
 windowFlags
 
 windowTitle
 
- Properties inherited from QGraphicsObject
 effect
 
 enabled
 
 opacity
 
 parent
 
 pos
 
 rotation
 
 scale
 
 transformOriginPoint
 
 visible
 
 x
 
 y
 
 z
 
- Properties inherited from QObject
 objectName
 

Friends

class QApplication
 
class QGraphicsItem
 
class QGraphicsLayout
 
class QGraphicsScene
 
class QGraphicsView
 
class QWidget
 

Additional Inherited Members

- Public Typedefs inherited from QGraphicsItem
using GraphicsItemFlags = QFlags< GraphicsItemFlag >
 
- Public Types inherited from QGraphicsItem
enum  CacheMode
 
enum  GraphicsItemChange
 
enum  GraphicsItemFlag
 
enum  PanelModality
 
- Protected Slots inherited from QGraphicsObject
void updateMicroFocus ()
 

Detailed Description

The QGraphicsWidget class is the base class for all widget items in a QGraphicsScene.

QGraphicsWidget is an extended base item that provides extra functionality over QGraphicsItem. It is similar to QWidget in many ways:

Unlike QGraphicsItem, QGraphicsWidget is not an abstract class; you can create instances of a QGraphicsWidget without having to subclass it. This approach is useful for widgets that only serve the purpose of organizing child widgets into a layout.

QGraphicsWidget can be used as a base item for your own custom item if you require advanced input focus handling, e.g., tab focus and activation, or layouts.

Since QGraphicsWidget resembles QWidget and has similar API, it is easier to port a widget from QWidget to QGraphicsWidget, instead of QGraphicsItem.

Note
QWidget-based widgets can be directly embedded into a QGraphicsScene using QGraphicsProxyWidget.

Noticeable differences between QGraphicsWidget and QWidget are:

QGraphicsWidgetQWidget
Coordinates and geometry are defined with qreals (doubles or floats, depending on the platform). QWidget uses integer geometry (QPoint, QRect).
The widget is already visible by default; you do not have to call show() to display the widget. QWidget is hidden by default until you call show().
A subset of widget attributes are supported. All widget attributes are supported.
A top-level item's style defaults to QGraphicsScene::style A top-level widget's style defaults to QApplication::style
Graphics View provides a custom drag and drop system which is different from QWidget. Standard drag and drop.
Widget items do not support modality. Full modality support.

QGraphicsWidget only supports some of the CopperSpice widget attributes, as shown in the table below. Any attributes not listed in this table are unsupported, or otherwise unused.

Widget AttributeUsage
Qt::WA_SetLayoutDirection Set by setLayoutDirection(), cleared by unsetLayoutDirection(). You can test this attribute to check if the widget has been explicitly assigned a layoutDirection. If the attribute is not set, the layoutDirection() is inherited.
Qt::WA_RightToLeft Toggled by setLayoutDirection(). Inherited from the parent/scene. If set, the widget's layout will order horizontally arranged widgets from right to left.
Qt::WA_SetStyle Set and cleared by setStyle(). If this attribute is set, the widget has been explicitly assigned a style. If it is unset, the widget will use the scene's or the application's style.
Qt::WA_ResizedSet by setGeometry() and resize().
Qt::WA_SetPaletteSet by setPalette().
Qt::WA_SetFontSet by setFont().
Qt::WA_WindowPropagationEnables propagation to window widgets.

Although QGraphicsWidget inherits from both QObject and QGraphicsItem, you should use the functions provided by QGraphicsItem, not QObject, to manage the relationships between parent and child items. These functions control the stacking order of items as well as their ownership.

Note
The QObject::parent() should always return a nullptr for QGraphicsWidgets, but this policy is not strictly defined.
See also
QGraphicsProxyWidget, QGraphicsItem, Widgets, Layouts

Constructor & Destructor Documentation

QGraphicsWidget::QGraphicsWidget ( QGraphicsItem parent = nullptr,
Qt::WindowFlags  flags = Qt::EmptyFlag 
)

Constructs a QGraphicsWidget instance. The optional parent argument is passed to QGraphicsItem's constructor. The optional flags argument specifies the widget's window flags (e.g., whether the widget should be a window, a tool, a popup, etc).

QGraphicsWidget::~QGraphicsWidget ( )

Destroys the QGraphicsWidget instance.

Method Documentation

QList< QAction * > QGraphicsWidget::actions ( ) const

Returns the (possibly empty) list of this widget's actions.

See also
insertAction(), removeAction(), QWidget::actions(), QAction::associatedWidgets(), QAction::associatedGraphicsWidgets()
void QGraphicsWidget::addAction ( QAction action)

Appends the action action to this widget's list of actions.

All QGraphicsWidgets have a list of QActions, however they can be represented graphically in many different ways. The default use of the QAction list (as returned by actions()) is to create a context QMenu.

A QGraphicsWidget should only have one of each action and adding an action it already has will not cause the same action to be in the widget twice.

See also
removeAction(), insertAction(), actions(), QWidget::addAction()
void QGraphicsWidget::addActions ( const QList< QAction * > &  actions)

Appends the actions actions to this widget's list of actions.

See also
removeAction(), QMenu, addAction(), QWidget::addActions()
void QGraphicsWidget::adjustSize ( )

Adjusts the size of the widget to its effective preferred size hint.

This function is called implicitly when the item is shown for the first time.

See also
effectiveSizeHint(), Qt::MinimumSize
bool QGraphicsWidget::autoFillBackground ( ) const

Property documentation pending.

QRectF QGraphicsWidget::boundingRect ( ) const
override

Reimplemented from QGraphicsItem::boundingRect().

void QGraphicsWidget::changeEvent ( QEvent event)
protectedvirtual

This event handler can be reimplemented to handle state changes.

The state being changed in this event can be retrieved through event.

Change events include: QEvent::ActivationChange, QEvent::EnabledChange, QEvent::FontChange, QEvent::StyleChange, QEvent::PaletteChange, QEvent::ParentChange, QEvent::LayoutDirectionChange, and QEvent::ContentsRectChange.

const QList< QObject * > & QObject::children ( ) const
using

Returns a list of child objects. The first child added is the first object in the list and the last child added is the last object in the list. New children are appended at the end.

The list order changes whenever QWidget children are moved in the Z order, causing them to be raised or lowered. A widget that is raised becomes the last object in the list and a widget that is lowered becomes the first object in the list.

See also
findChild(), findChildren(), parent(), setParent()
bool QGraphicsWidget::close ( )
slot

Call this function to close the widget.

Returns true if the widget was closed, otherwise returns false. This slot will first send a QCloseEvent to the widget, which may or may not accept the event. If the event was ignored, nothing happens. If the event was accepted, it will hide() the widget.

If the widget has the Qt::WA_DeleteOnClose attribute set it will be deleted.

void QGraphicsWidget::closeEvent ( QCloseEvent event)
protectedvirtual

This event handler, for event, can be reimplemented in a subclass to receive widget close events. The default implementation accepts the event.

See also
close(), QCloseEvent
bool QGraphicsWidget::event ( QEvent event)
overrideprotected

Reimplemented from QObject::event().

Handles the event. QGraphicsWidget handles the following events:

PolishDelivered to the widget some time after it has been shown.
GraphicsSceneMoveDelivered to the widget after its local position has changed.
GraphicsSceneResizeDelivered to the widget after its size has changed.
ShowDelivered to the widget before it has been shown.
HideDelivered to the widget after it has been hidden.
PaletteChangeDelivered to the widget after its palette has changed.
FontChangeDelivered to the widget after its font has changed.
EnabledChangeDelivered to the widget after its enabled state has changed.
StyleChangeDelivered to the widget after its style has changed.
LayoutDirectionChangeDelivered to the widget after its layout direction has changed.
ContentsRectChangeDelivered to the widget after its contents margins/ contents rect has changed.
void QGraphicsWidget::focusInEvent ( QFocusEvent event)
overrideprotected

Reimplemented from QGraphicsItem::focusInEvent().

bool QGraphicsWidget::focusNextPrevChild ( bool  next)
protectedvirtual

Finds a new widget to give the keyboard focus to, as appropriate for Tab and Shift+Tab, and returns true if it can find a new widget; returns false otherwise. If next is true, this function searches forward; if next is false, it searches backward.

Sometimes, you will want to reimplement this function to provide special focus handling for your widget and its subwidgets. For example, a web browser might reimplement it to move its current active link forward or backward, and call the base implementation only when it reaches the last or first link on the page.

Child widgets call focusNextPrevChild() on their parent widgets, but only the window that contains the child widgets decides where to redirect focus. By reimplementing this function for an object, you gain control of focus traversal for all child widgets.

See also
focusPolicy()

Reimplemented in QGraphicsWebView, and QGraphicsProxyWidget.

void QGraphicsWidget::focusOutEvent ( QFocusEvent event)
overrideprotected

Reimplemented from QGraphicsItem::focusOutEvent().

Qt::FocusPolicy QGraphicsWidget::focusPolicy ( ) const

Property documentation pending.Property documentation pending.

QGraphicsWidget * QGraphicsWidget::focusWidget ( ) const

If this widget, a child or descendant of this widget currently has input focus, this function will return a pointer to that widget. If no descendant widget has input focus, 0 is returned.

See also
QGraphicsItem::focusItem(), QWidget::focusWidget()
QFont QGraphicsWidget::font ( ) const

Property documentation pending.

void QGraphicsWidget::geometryChanged ( )
signal

This signal gets emitted whenever the geometry is changed in setGeometry().

void QGraphicsWidget::getContentsMargins ( qreal left,
qreal top,
qreal right,
qreal bottom 
) const
overridevirtual

Reimplemented from QGraphicsLayoutItem::getContentsMargins().

Gets the widget's contents margins. The margins are stored in left, top, right and bottom, as pointers to qreals. Each argument can be omitted by passing 0.

See also
setContentsMargins()

Reimplemented from QGraphicsLayoutItem.

void QGraphicsWidget::getWindowFrameMargins ( qreal left,
qreal top,
qreal right,
qreal bottom 
) const

Gets the widget's window frame margins. The margins are stored in left, top, right and bottom as pointers to qreals. Each argument can be omitted by passing 0.

See also
setWindowFrameMargins(), windowFrameRect()
void QGraphicsWidget::grabKeyboardEvent ( QEvent event)
protectedvirtual

This event handler, for event, can be reimplemented in a subclass to receive notifications for QEvent::GrabKeyboard events.

See also
grabKeyboard(), grabMouse()
void QGraphicsWidget::grabMouseEvent ( QEvent event)
protectedvirtual

This event handler, for event, can be reimplemented in a subclass to receive notifications for QEvent::GrabMouse events.

See also
grabMouse(), grabKeyboard()

Reimplemented in QGraphicsProxyWidget.

int QGraphicsWidget::grabShortcut ( const QKeySequence sequence,
Qt::ShortcutContext  context = Qt::WindowShortcut 
)

Adds a shortcut to the CopperSpice shortcut system that watches for the given key sequence in the given context. If the context is Qt::ApplicationShortcut, the shortcut applies to the application as a whole. Otherwise, it is either local to this widget, Qt::WidgetShortcut, or to the window itself, Qt::WidgetShortcut. For widgets that are not part of a window (i.e., top-level widgets and their children), Qt::WidgetShortcut shortcuts apply to the scene.

If the same key sequence has been grabbed by several widgets, when the key sequence occurs a QEvent::Shortcut event is sent to all the widgets to which it applies in a non-deterministic order, but with the `‘ambiguous’' flag set to true.

Warning
You should not normally need to use this function; instead create QActions with the shortcut key sequences you require (if you also want equivalent menu options and toolbar buttons), or create QShortcuts if you just need key sequences. Both QAction and QShortcut handle all the event filtering for you, and provide signals which are triggered when the user triggers the key sequence, so are much easier to use than this low-level function.
See also
releaseShortcut(), setShortcutEnabled(), QWidget::grabShortcut()
void QGraphicsWidget::hideEvent ( QHideEvent event)
protectedvirtual

This event handler, for Hide events, is delivered after the widget has been hidden, for example, setVisible(false) has been called for the widget or one of its ancestors when the widget was previously shown.

You can reimplement this event handler to detect when your widget is hidden. Calling QEvent::accept() or QEvent::ignore() on event has no effect.

See also
showEvent(), QWidget::hideEvent(), ItemVisibleChange

Reimplemented in QGraphicsProxyWidget.

void QGraphicsWidget::hoverLeaveEvent ( QGraphicsSceneHoverEvent event)
overrideprotected

Reimplemented from QGraphicsItem::hoverLeaveEvent().

void QGraphicsWidget::hoverMoveEvent ( QGraphicsSceneHoverEvent event)
overrideprotected

Reimplemented from QGraphicsItem::hoverMoveEvent().

void QGraphicsWidget::initStyleOption ( QStyleOption option) const
protectedvirtual

Populates a style option object for this widget based on its current state, and stores the output in option. The default implementation populates option with the following properties.

Style Option PropertyValue
state & QStyle::State_EnabledCorresponds to QGraphicsItem::isEnabled().
state & QStyle::State_HasFocusCorresponds to QGraphicsItem::hasFocus().
state & QStyle::State_MouseOverCorresponds to QGraphicsItem::isUnderMouse().
directionCorresponds to QGraphicsWidget::layoutDirection().
rectCorresponds to QGraphicsWidget::rect().toRect().
paletteCorresponds to QGraphicsWidget::palette().
fontMetricsCorresponds to QFontMetrics(QGraphicsWidget::font()).

Subclasses of QGraphicsWidget should call the base implementation, and then test the type of option using qstyleoption_cast<>() or test QStyleOption::Type before storing widget-specific options.

void MyGroupBoxWidget::initStyleOption(QStyleOption *option) const
{
if (QStyleOptionGroupBox *box = qstyleoption_cast<QStyleOptionGroupBox *>(option)) {
// Add group box specific state.
box->flat = isFlat();
...
}
}
See also
QStyleOption::initFrom()
void QGraphicsWidget::insertAction ( QAction before,
QAction action 
)

Inserts the action action to this widget's list of actions, before the action before. It appends the action if before is 0 or before is not a valid action for this widget.

A QGraphicsWidget should only have one of each action.

See also
removeAction(), addAction(), QMenu, actions(), QWidget::insertActions()
void QGraphicsWidget::insertActions ( QAction before,
QList< QAction * >  actions 
)

Inserts the actions actions to this widget's list of actions, before the action before. It appends the action if before is 0 or before is not a valid action for this widget.

A QGraphicsWidget can have at most one of each action.

See also
removeAction(), QMenu, insertAction(), QWidget::insertActions()
bool QGraphicsWidget::isActiveWindow ( ) const

Returns true if this widget's window is in the active window, or if the widget does not have a window but is in an active scene (i.e., a scene that currently has focus).

The active window is the window that either contains a child widget that currently has input focus, or that itself has input focus.

See also
QGraphicsScene::activeWindow(), QGraphicsScene::setActiveWindow(), isActive()
QVariant QGraphicsWidget::itemChange ( GraphicsItemChange  change,
const QVariant value 
)
overrideprotected

Reimplemented from QGraphicsItem::itemChange().

QGraphicsWidget uses the base implementation of this function to catch and deliver events related to state changes in the item. Because of this, it is very important that subclasses call the base implementation.

change specifies the type of change, and value is the new value.

For example, QGraphicsWidget uses ItemVisibleChange to deliver Show and Hide events, ItemPositionHasChanged to deliver Move events, and ItemParentChange both to deliver ParentChange events, and for managing the focus chain.

QGraphicsWidget enables the ItemSendsGeometryChanges flag by default in order to track position changes.

See also
QGraphicsItem::itemChange()
QGraphicsLayout * QGraphicsWidget::layout ( ) const

Property documentation pending.

Qt::LayoutDirection QGraphicsWidget::layoutDirection ( ) const

Property documentation pending.

void QGraphicsWidget::moveEvent ( QGraphicsSceneMoveEvent event)
protectedvirtual

This event handler, for GraphicsSceneMove events, is delivered after the widget has moved (e.g., its local position has changed).

This event is only delivered when the item is moved locally. Calling setTransform() or moving any of the item's ancestors does not affect the item's local position.

You can reimplement this event handler to detect when your widget has moved. Calling QEvent::accept() or QEvent::ignore() on event has no effect.

See also
ItemPositionChange, ItemPositionHasChanged
void QGraphicsWidget::paint ( QPainter painter,
const QStyleOptionGraphicsItem option,
QWidget widget = nullptr 
)
override

Reimplemented from QGraphicsItem::paint().

void QGraphicsWidget::paintWindowFrame ( QPainter painter,
const QStyleOptionGraphicsItem option,
QWidget widget = nullptr 
)
virtual

This virtual function is called by QGraphicsScene to draw the window frame for windows using painter, option, and widget, in local coordinates. The base implementation uses the current style to render the frame and title bar.

You can reimplement this function in a subclass of QGraphicsWidget to provide custom rendering of the widget's window frame.

See also
QGraphicsItem::paint()
QPalette QGraphicsWidget::palette ( ) const

Property documentation pending.

void QGraphicsWidget::polishEvent ( )
protectedvirtual

This event is delivered to the item by the scene at some point after it has been constructed, but before it is shown or otherwise accessed through the scene. You can use this event handler to do last-minute initializations of the widget which require the item to be fully constructed.

The base implementation does nothing.

QRectF QGraphicsWidget::rect ( ) const
inline

Returns the item's local rect as a QRectF. This function is equivalent to QRectF(QPointF(), size()).

See also
setGeometry(), resize()
void QGraphicsWidget::releaseShortcut ( int  id)

Removes the shortcut with the given id from the CopperSpice shortcut system. The widget will no longer receive QEvent::Shortcut events for the shortcut's key sequence (unless it has other shortcuts with the same key sequence).

Warning
You should not normally need to use this function since the CopperSpice shortcut system removes shortcuts automatically when their parent widget is destroyed. It is best to use QAction or QShortcut to handle shortcuts, since they are easier to use than this low-level function. Note also that this is an expensive operation.
See also
grabShortcut(), setShortcutEnabled(), QWidget::releaseShortcut()
void QGraphicsWidget::removeAction ( QAction action)

Removes the action action from this widget's list of actions.

See also
insertAction(), actions(), insertAction(), QWidget::removeAction()
void QGraphicsWidget::resize ( const QSizeF size)

Property documentation pending.

void QGraphicsWidget::resize ( qreal  width,
qreal  height 
)
inline

Property documentation pending.

void QGraphicsWidget::resizeEvent ( QGraphicsSceneResizeEvent event)
protectedvirtual

This event handler, for GraphicsSceneResize events, is delivered after the widget has been resized (i.e., its local size has changed). event contains both the old and the new size.

This event is only delivered when the widget is resized locally; calling setTransform() on the widget or any of its ancestors or view, does not affect the widget's local size.

You can reimplement this event handler to detect when your widget has been resized. Calling QEvent::accept() or QEvent::ignore() on event has no effect.

See also
geometry(), setGeometry()

Reimplemented in QGraphicsProxyWidget.

bool QGraphicsWidget::sceneEvent ( QEvent event)
overrideprotected

Reimplemented from QGraphicsItem::sceneEvent().

QGraphicsWidget's implementation of sceneEvent() simply passes event to QGraphicsWidget::event(). You can handle all events for your widget in event() or in any of the convenience functions; you should not have to reimplement this function in a subclass of QGraphicsWidget.

See also
QGraphicsItem::sceneEvent()
void QGraphicsWidget::setAttribute ( Qt::WidgetAttribute  attribute,
bool  on = true 
)

If on is true, this function enables attribute, otherwise attribute is disabled.

See the class documentation for QGraphicsWidget for a complete list of which attributes are supported, and what they are for.

See also
testAttribute(), QWidget::setAttribute()
void QGraphicsWidget::setAutoFillBackground ( bool  enabled)

Property documentation pending.

void QGraphicsWidget::setContentsMargins ( qreal  left,
qreal  top,
qreal  right,
qreal  bottom 
)

Sets the widget's contents margins to left, top, right and bottom.

Contents margins are used by the assigned layout to define the placement of subwidgets and layouts. Margins are particularly useful for widgets that constrain subwidgets to only a section of its own geometry. For example, a group box with a layout will place subwidgets inside its frame, but below the title.

Changing a widget's contents margins will always trigger an update(), and any assigned layout will be activated automatically. The widget will then receive a ContentsRectChange event.

See also
getContentsMargins(), setGeometry()
void QGraphicsWidget::setFocusPolicy ( Qt::FocusPolicy  policy)

Property documentation pending.

void QGraphicsWidget::setFont ( const QFont font)

Property documentation pending.

void QGraphicsWidget::setGeometry ( const QRectF rect)
overridevirtual

This virtual function sets the geometry of the QGraphicsLayoutItem to rect, which is in parent coordinates (e.g., the top-left corner of rect is equivalent to the item's position in parent coordinates).

You must reimplement this function in a subclass of QGraphicsLayoutItem to receive geometry updates. The layout will call this function when it does a rearrangement.

If rect is outside of the bounds of minimumSize and maximumSize, it will be adjusted to its closest size so that it is within the legal bounds.

See also
geometry()

Reimplemented from QGraphicsLayoutItem.

Reimplemented in QGraphicsWebView.

void QGraphicsWidget::setGeometry ( qreal  x,
qreal  y,
qreal  width,
qreal  height 
)
inline

Property documentation pending.

void QGraphicsWidget::setLayout ( QGraphicsLayout layout)

Property documentation pending.

void QGraphicsWidget::setLayoutDirection ( Qt::LayoutDirection  direction)

Property documentation pending.

void QGraphicsWidget::setPalette ( const QPalette palette)

Property documentation pending.

void QGraphicsWidget::setShortcutAutoRepeat ( int  id,
bool  enabled = true 
)

If enabled is true, auto repeat of the shortcut with the given id is enabled, otherwise it is disabled.

See also
grabShortcut(), releaseShortcut(), QWidget::setShortcutAutoRepeat()
void QGraphicsWidget::setShortcutEnabled ( int  id,
bool  enabled = true 
)

If enabled is true, the shortcut with the given id is enabled, otherwise the shortcut is disabled.

Warning
You should not normally need to use this function since the CopperSpice shortcut system enables/disables shortcuts automatically as widgets become hidden/visible and gain or lose focus. It is best to use QAction or QShortcut to handle shortcuts, since they are easier to use than this low-level function.
See also
grabShortcut(), releaseShortcut(), QWidget::setShortcutEnabled()
void QGraphicsWidget::setStyle ( QStyle style)

Sets the widget's style to style. QGraphicsWidget does not take ownership of style.

If no style is assigned, or style is 0, the widget will use QGraphicsScene::style() (if this has been set). Otherwise the widget will use QApplication::style().

This function sets the Qt::WA_SetStyle attribute if style is not 0, otherwise it clears the attribute.

See also
style()
void QGraphicsWidget::setTabOrder ( QGraphicsWidget *  first,
QGraphicsWidget *  second 
)
static

Moves the second widget around the ring of focus widgets so that keyboard focus moves from the first widget to the second widget when the Tab key is pressed.

Note that since the tab order of the second widget is changed, you should order a chain like this:

setTabOrder(a, b); // a to b
setTabOrder(b, c); // a to b to c
setTabOrder(c, d); // a to b to c to d

not like this:

// WRONG
setTabOrder(c, d); // c to d
setTabOrder(a, b); // a to b AND c to d
setTabOrder(b, c); // a to b to c, but not c to d

If first is 0, this indicates that second should be the first widget to receive input focus should the scene gain Tab focus (i.e., the user hits Tab so that focus passes into the scene). If second is 0, this indicates that first should be the first widget to gain focus if the scene gained BackTab focus.

By default, tab order is defined implicitly using widget creation order.

See also
focusPolicy, Keyboard Focus
void QGraphicsWidget::setWindowFlags ( Qt::WindowFlags  flags)

Property documentation pending.

void QGraphicsWidget::setWindowFrameMargins ( qreal  left,
qreal  top,
qreal  right,
qreal  bottom 
)

Sets the widget's window frame margins to left, top, right and bottom. The default frame margins are provided by the style, and they depend on the current window flags. If you would like to draw your own window decoration, you can set your own frame margins to override the default margins.

See also
unsetWindowFrameMargins(), getWindowFrameMargins(), windowFrameRect()
void QGraphicsWidget::setWindowTitle ( const QString title)

Property documentation pending.

QPainterPath QGraphicsWidget::shape ( ) const
override

Reimplemented from QGraphicsItem::shape().

void QGraphicsWidget::showEvent ( QShowEvent event)
protectedvirtual

This event handler, for Show events, is delivered before the widget has been shown, for example, setVisible(true) has been called for the widget or one of its ancestors when the widget was previously hidden.

You can reimplement this event handler to detect when your widget is shown. Calling QEvent::accept() or QEvent::ignore() on event has no effect.

See also
hideEvent(), QWidget::showEvent(), ItemVisibleChange

Reimplemented in QGraphicsProxyWidget.

QSizeF QGraphicsWidget::size ( ) const

Property documentation pending.

QSizeF QGraphicsWidget::sizeHint ( Qt::SizeHint  which,
const QSizeF constraint = QSizeF() 
) const
overrideprotectedvirtual

Reimplemented from QGraphicsLayoutItem::sizeHint().

Implements QGraphicsLayoutItem.

Reimplemented in QGraphicsWebView.

QStyle * QGraphicsWidget::style ( ) const

Returns a pointer to the widget's style. If this widget does not have any explicitly assigned style, the scene's style is returned instead. In turn, if the scene does not have any assigned style, this function returns QApplication::style().

See also
setStyle()
bool QGraphicsWidget::testAttribute ( Qt::WidgetAttribute  attribute) const

Returns true if attribute is enabled for this widget, otherwise returns false.

See also
setAttribute()
int QGraphicsWidget::type ( ) const
override

Reimplemented from QGraphicsItem::type().

void QGraphicsWidget::ungrabKeyboardEvent ( QEvent event)
protectedvirtual

This event handler, for event, can be reimplemented in a subclass to receive notifications for QEvent::UngrabKeyboard events.

See also
ungrabKeyboard(), ungrabMouse()
void QGraphicsWidget::ungrabMouseEvent ( QEvent event)
protectedvirtual

This event handler, for event, can be reimplemented in a subclass to receive notifications for QEvent::UngrabMouse events.

See also
ungrabMouse(), ungrabKeyboard()

Reimplemented in QGraphicsProxyWidget.

void QGraphicsWidget::unsetLayoutDirection ( )

Property documentation pending.

void QGraphicsWidget::unsetWindowFrameMargins ( )

Resets the window frame margins to the default value, provided by the style.

See also
setWindowFrameMargins(), getWindowFrameMargins(), windowFrameRect()
void QGraphicsWidget::updateGeometry ( )
overrideprotectedvirtual

Reimplemented from QGraphicsLayoutItem::updateGeometry().

If this widget is currently managed by a layout, this function notifies the layout that the widget's size hints have changed and the layout may need to resize and reposition the widget accordingly.

Call this function if the widget's sizeHint() has changed.

See also
QGraphicsLayout::invalidate()

Reimplemented from QGraphicsLayoutItem.

Reimplemented in QGraphicsWebView.

Qt::WindowFlags QGraphicsWidget::windowFlags ( ) const

Property documentation pending.

bool QGraphicsWidget::windowFrameEvent ( QEvent event)
protectedvirtual

This event handler, for event, receives events for the window frame if this widget is a window. Its base implementation provides support for default window frame interaction such as moving, resizing, etc.

You can reimplement this handler in a subclass of QGraphicsWidget to provide your own custom window frame interaction support.

Returns true if event has been recognized and processed, otherwise returns false.

See also
event()
QRectF QGraphicsWidget::windowFrameGeometry ( ) const

Returns the widget's geometry in parent coordinates including any window frame.

See also
windowFrameRect(), getWindowFrameMargins(), setWindowFrameMargins()
QRectF QGraphicsWidget::windowFrameRect ( ) const

Returns the widget's local rect including any window frame.

See also
windowFrameGeometry(), getWindowFrameMargins(), setWindowFrameMargins()
Qt::WindowFrameSection QGraphicsWidget::windowFrameSectionAt ( const QPointF pos) const
protectedvirtual

Returns the window frame section at position pos, or Qt::NoSection if there is no window frame section at this position.

This function is used in QGraphicsWidget's base implementation for window frame interaction.

You can reimplement this function if you want to customize how a window can be interactively moved or resized. For instance, if you only want to allow a window to be resized by the bottom right corner, you can reimplement this function to return Qt::NoSection for all sections except Qt::BottomRightSection.

See also
windowFrameEvent(), paintWindowFrame(), windowFrameGeometry()
QString QGraphicsWidget::windowTitle ( ) const

Property documentation pending.

Qt::WindowType QGraphicsWidget::windowType ( ) const

Returns the widgets window type.

See also
windowFlags(), isWindow(), isPanel()

Property Documentation

QGraphicsWidget::autoFillBackground

This property holds whether the widget background is filled automatically.

If enabled, this property will cause CopperSpice to fill the background of the widget before invoking the paint() method. The color used is defined by the QPalette::Window color role from the widget's palette.

In addition, Windows are always filled with QPalette::Window, unless the WA_OpaquePaintEvent or WA_NoSystemBackground attributes are set.

By default, this property is false.

See also
Qt::WA_OpaquePaintEvent, Qt::WA_NoSystemBackground
PropertiesClass Methods
read autoFillBackground
write setAutoFillBackground
QGraphicsWidget::focusPolicy

This property holds the way the widget accepts keyboard focus.

The focus policy is Qt::TabFocus if the widget accepts keyboard focus by tabbing, Qt::ClickFocus if the widget accepts focus by clicking, Qt::StrongFocus if it accepts both, and Qt::NoFocus (the default) if it does not accept focus at all.

You must enable keyboard focus for a widget if it processes keyboard events. This is normally done from the widget's constructor. For instance, the QLineEdit constructor calls setFocusPolicy(Qt::StrongFocus).

If you enable a focus policy (i.e., not Qt::NoFocus), QGraphicsWidget will automatically enable the ItemIsFocusable flag. Setting Qt::NoFocus on a widget will clear the ItemIsFocusable flag. If the widget currently has keyboard focus, the widget will automatically lose focus.

See also
focusInEvent(), focusOutEvent(), keyPressEvent(), keyReleaseEvent(), enabled
PropertiesClass Methods
read focusPolicy
write setFocusPolicy
QGraphicsWidget::font

This property holds the widgets' font.

This property provides the widget's font.

QFont consists of font properties that have been explicitly defined and properties implicitly inherited from the widget's parent. Hence, font() can return a different font compared to the one set with setFont(). This scheme allows you to define single entries in a font without affecting the font's inherited entries.

When a widget's font changes, it resolves its entries against its parent widget. If the widget does not have a parent widget, it resolves its entries against the scene. The widget then sends itself a FontChange event and notifies all its descendants so that they can resolve their fonts as well.

By default, this property contains the application's default font.

See also
QApplication::font(), QGraphicsScene::font, QFont::resolve()
PropertiesClass Methods
read font
write setFont
QGraphicsWidget::geometry

This property holds the geometry of the widget.

Sets the item's geometry to rect. The item's position and size are modified as a result of calling this function. The item is first moved, then resized.

A side effect of calling this function is that the widget will receive a move event and a resize event. Also, if the widget has a layout assigned, the layout will activate.

See also
geometry(), resize()
PropertiesClass Methods
read geometry
write cs_setGeometry
notify geometryChanged
QGraphicsWidget::layout

This property holds the layout of the widget.

Any existing layout manager is deleted before the new layout is assigned. If layout is a nullptr, the widget is left without a layout. Existing subwidgets' geometries will remain unaffected. QGraphicsWidget takes ownership of layout.

All widgets that are currently managed by layout or all of its sublayouts, are automatically reparented to this item. The layout is then invalidated, and the child widget geometries are adjusted according to this item's geometry() and contentsMargins(). Children who are not explicitly managed by layout remain unaffected by the layout after it has been assigned to this widget.

If no layout is currently managing this widget, layout() will return a nullptr.

PropertiesClass Methods
read layout
write setLayout
notify layoutChanged
QGraphicsWidget::layoutDirection

This property holds the layout direction for this widget.

This property modifies this widget's and all of its descendants' Qt::WA_RightToLeft attribute. It also sets this widget's Qt::WA_SetLayoutDirection attribute.

The widget's layout direction determines the order in which the layout manager horizontally arranges subwidgets of this widget. The default value depends on the language and locale of the application, and is typically in the same direction as words are read and written. With Qt::LeftToRight, the layout starts placing subwidgets from the left side of this widget towards the right. Qt::RightToLeft does the opposite, the layout will place widgets starting from the right edge moving towards the left.

Subwidgets inherit their layout direction from the parent. Top-level widget items inherit their layout direction from QGraphicsScene::layoutDirection. If you change a widget's layout direction by calling setLayoutDirection(), the widget will send itself a LayoutDirectionChange event, and then propagate the new layout direction to all its descendants.

See also
QWidget::layoutDirection, QApplication::layoutDirection
PropertiesClass Methods
read layoutDirection
write setLayoutDirection
reset unsetLayoutDirection
QGraphicsWidget::maximumSize

This property holds the maximum size of the widget.

See also
setMaximumSize(), maximumSize(), minimumSize, preferredSize
PropertiesClass Methods
read maximumSize
write cs_setMaximumSize
QGraphicsWidget::minimumSize

This property holds the minimum size of the widget.

See also
setMinimumSize(), minimumSize(), preferredSize, maximumSize
PropertiesClass Methods
read minimumSize
write cs_setMinimumSize
QGraphicsWidget::palette

This property holds the widget's palette.

This property provides the widget's palette. The palette provides colors and brushes for color groups (e.g., QPalette::Button) and states (e.g., QPalette::Inactive), loosely defining the general look of the widget and its children.

QPalette consists of color groups that have been explicitly defined, and groups that are implicitly inherited from the widget's parent. Because of this, palette() can return a different palette than what has been set with setPalette(). This scheme allows you to define single entries in a palette without affecting the palette's inherited entries.

When a widget's palette changes, it resolves its entries against its parent widget, or if it does not have a parent widget, it resolves against the scene. It then sends itself a PaletteChange event, and notifies all its descendants so they can resolve their palettes as well.

By default, this property contains the application's default palette.

See also
QApplication::palette(), QGraphicsScene::palette, QPalette::resolve()
PropertiesClass Methods
read palette
write setPalette
QGraphicsWidget::preferredSize

This property holds the preferred size of the widget.

See also
setPreferredSize(), preferredSize(), minimumSize, maximumSize
PropertiesClass Methods
read preferredSize
write cs_setPreferredSize
QGraphicsWidget::size

This property holds the size of the widget.

Calling resize() resizes the widget to a size bounded by minimumSize() and maximumSize(). This property only affects the widget's width and height (e.g., its right and bottom edges); the widget's position and top-left corner remains unaffected.

Resizing a widget triggers the widget to immediately receive a GraphicsSceneResize event with the widget's old and new size. If the widget has a layout assigned when this event arrives, the layout will be activated and it will automatically update any child widget's geometry.

This property does not affect any layout of the parent widget. If the widget itself is managed by a parent layout; e.g., it has a parent widget with a layout assigned, that layout will not activate.

By default, this property contains a size with zero width and height.

See also
setGeometry(), QGraphicsSceneResizeEvent, QGraphicsLayout
PropertiesClass Methods
read size
write cs_resize
notify geometryChanged
QGraphicsWidget::sizePolicy

This property holds the size policy for the widget.

See also
sizePolicy(), setSizePolicy(), QWidget::sizePolicy()
PropertiesClass Methods
read sizePolicy
write cs_setSizePolicy
QGraphicsWidget::windowFlags

This property holds the widget's window flags.

Window flags are a combination of a window type (e.g., Qt::Dialog) and several flags giving hints on the behavior of the window. The behavior is platform-dependent.

By default, this property contains no window flags.

Windows are panels. If you set the Qt::Window flag, the ItemIsPanel flag will be set automatically. If you clear the Qt::Window flag, the ItemIsPanel flag is also cleared. Note that the ItemIsPanel flag can be set independently of Qt::Window.

See also
isWindow(), isPanel()
PropertiesClass Methods
read windowFlags
write setWindowFlags
QGraphicsWidget::windowTitle

This property holds this property holds the window title (caption).

This property is only used for windows.

By default, if no title has been set, this property contains an empty string.

PropertiesClass Methods
read windowTitle
write setWindowTitle