QGraphicsProxyWidget Class

  int main(int argc, char **argv)
  {
      QApplication app(argc, argv);

      QTabWidget *tabWidget = new QTabWidget;

      QGraphicsScene scene;
      QGraphicsProxyWidget *proxy = scene.addWidget(tabWidget);

      QGraphicsView view(&scene);
      view.show();

      return app.exec();
  }

  QGroupBox *groupBox = new QGroupBox("Contact Details");
  QLabel *numberLabel = new QLabel("Telephone number");
  QLineEdit *numberEdit = new QLineEdit;

  QFormLayout *layout = new QFormLayout;
  layout->addRow(numberLabel, numberEdit);
  groupBox->setLayout(layout);

  QGraphicsScene scene;
  QGraphicsProxyWidget *proxy = scene.addWidget(groupBox);

  QGraphicsView view(&scene);
  view.show();

  QGraphicsScene scene;

  QLineEdit *edit = new QLineEdit;
  QGraphicsProxyWidget *proxy = scene.addWidget(edit);

  edit->isVisible();  // returns true
  proxy->isVisible(); // also returns true

  edit->hide();

  edit->isVisible();  // returns false
  proxy->isVisible(); // also returns false

Member Function Documentation

QGraphicsProxyWidget::QGraphicsProxyWidget(QGraphicsItem *parent = Q_NULLPTR, Qt::WindowFlags wFlags = Qt::WindowFlags())

Constructs a new QGraphicsProxy widget. parent and wFlags are passed to QGraphicsItem's constructor.

QGraphicsProxyWidget::~QGraphicsProxyWidget()

Destroys the proxy widget and any embedded widget.

[virtual protected] void QGraphicsProxyWidget::contextMenuEvent(QGraphicsSceneContextMenuEvent *event)

Reimplemented from QGraphicsItem::contextMenuEvent().

QGraphicsProxyWidget *QGraphicsProxyWidget::createProxyForChildWidget(QWidget *child)

Creates a proxy widget for the given child of the widget contained in this proxy.

This function makes it possible to acquire proxies for non top-level widgets. For instance, you can embed a dialog, and then transform only one of its widgets.

If the widget is already embedded, return the existing proxy widget.

This function was introduced in Qt 4.5.

See also newProxyWidget() and QGraphicsScene::addWidget().

[virtual protected] void QGraphicsProxyWidget::dragEnterEvent(QGraphicsSceneDragDropEvent *event)

Reimplemented from QGraphicsItem::dragEnterEvent().

[virtual protected] void QGraphicsProxyWidget::dragLeaveEvent(QGraphicsSceneDragDropEvent *event)

Reimplemented from QGraphicsItem::dragLeaveEvent().

[virtual protected] void QGraphicsProxyWidget::dragMoveEvent(QGraphicsSceneDragDropEvent *event)

Reimplemented from QGraphicsItem::dragMoveEvent().

[virtual protected] void QGraphicsProxyWidget::dropEvent(QGraphicsSceneDragDropEvent *event)

Reimplemented from QGraphicsItem::dropEvent().

[virtual protected] bool QGraphicsProxyWidget::event(QEvent *event)

Reimplemented from QObject::event().

[virtual protected] bool QGraphicsProxyWidget::eventFilter(QObject *object, QEvent *event)

Reimplemented from QObject::eventFilter().

[virtual protected] void QGraphicsProxyWidget::focusInEvent(QFocusEvent *event)

Reimplemented from QGraphicsItem::focusInEvent().

[virtual protected] bool QGraphicsProxyWidget::focusNextPrevChild(bool next)

Reimplemented from QGraphicsWidget::focusNextPrevChild().

[virtual protected] void QGraphicsProxyWidget::focusOutEvent(QFocusEvent *event)

Reimplemented from QGraphicsItem::focusOutEvent().

[virtual protected] void QGraphicsProxyWidget::grabMouseEvent(QEvent *event)

Reimplemented from QGraphicsWidget::grabMouseEvent().

[virtual protected] void QGraphicsProxyWidget::hideEvent(QHideEvent *event)

Reimplemented from QGraphicsWidget::hideEvent().

[virtual protected] void QGraphicsProxyWidget::hoverEnterEvent(QGraphicsSceneHoverEvent *event)

Reimplemented from QGraphicsItem::hoverEnterEvent().

[virtual protected] void QGraphicsProxyWidget::hoverLeaveEvent(QGraphicsSceneHoverEvent *event)

Reimplemented from QGraphicsItem::hoverLeaveEvent().

[virtual protected] void QGraphicsProxyWidget::hoverMoveEvent(QGraphicsSceneHoverEvent *event)

Reimplemented from QGraphicsItem::hoverMoveEvent().

[virtual protected] void QGraphicsProxyWidget::inputMethodEvent(QInputMethodEvent *event)

Reimplemented from QGraphicsItem::inputMethodEvent().

[virtual protected] QVariant QGraphicsProxyWidget::inputMethodQuery(Qt::InputMethodQuery query) const

Reimplemented from QGraphicsItem::inputMethodQuery().

[virtual protected] QVariant QGraphicsProxyWidget::itemChange(GraphicsItemChange change, const QVariant &value)

Reimplemented from QGraphicsItem::itemChange().

[virtual protected] void QGraphicsProxyWidget::keyPressEvent(QKeyEvent *event)

Reimplemented from QGraphicsItem::keyPressEvent().

[virtual protected] void QGraphicsProxyWidget::keyReleaseEvent(QKeyEvent *event)

Reimplemented from QGraphicsItem::keyReleaseEvent().

[virtual protected] void QGraphicsProxyWidget::mouseDoubleClickEvent(QGraphicsSceneMouseEvent *event)

Reimplemented from QGraphicsItem::mouseDoubleClickEvent().

[virtual protected] void QGraphicsProxyWidget::mouseMoveEvent(QGraphicsSceneMouseEvent *event)

Reimplemented from QGraphicsItem::mouseMoveEvent().

[virtual protected] void QGraphicsProxyWidget::mousePressEvent(QGraphicsSceneMouseEvent *event)

Reimplemented from QGraphicsItem::mousePressEvent().

[virtual protected] void QGraphicsProxyWidget::mouseReleaseEvent(QGraphicsSceneMouseEvent *event)

Reimplemented from QGraphicsItem::mouseReleaseEvent().

[protected slot] QGraphicsProxyWidget *QGraphicsProxyWidget::newProxyWidget(const QWidget *child)

Creates a proxy widget for the given child of the widget contained in this proxy.

You should not call this function directly; use QGraphicsProxyWidget::createProxyForChildWidget() instead.

This function is a fake virtual slot that you can reimplement in your subclass in order to control how new proxy widgets are created. The default implementation returns a proxy created with the QGraphicsProxyWidget() constructor with this proxy widget as the parent.

This function was introduced in Qt 4.5.

See also createProxyForChildWidget().

[virtual] void QGraphicsProxyWidget::paint(QPainter *painter, const QStyleOptionGraphicsItem *option, QWidget *widget)

Reimplemented from QGraphicsItem::paint().

[virtual protected] void QGraphicsProxyWidget::resizeEvent(QGraphicsSceneResizeEvent *event)

Reimplemented from QGraphicsWidget::resizeEvent().

[virtual] void QGraphicsProxyWidget::setGeometry(const QRectF &rect)

Reimplemented from QGraphicsLayoutItem::setGeometry().

void QGraphicsProxyWidget::setWidget(QWidget *widget)

Embeds widget into this proxy widget. The embedded widget must reside exclusively either inside or outside of Graphics View. You cannot embed a widget as long as it is is visible elsewhere in the UI, at the same time.

widget must be a top-level widget whose parent is 0.

When the widget is embedded, its state (e.g., visible, enabled, geometry, size hints) is copied into the proxy widget. If the embedded widget is explicitly hidden or disabled, the proxy widget will become explicitly hidden or disabled after embedding is complete. The class documentation has a full overview over the shared state.

QGraphicsProxyWidget's window flags determine whether the widget, after embedding, will be given window decorations or not.

After this function returns, QGraphicsProxyWidget will keep its state synchronized with that of widget whenever possible.

If a widget is already embedded by this proxy when this function is called, that widget will first be automatically unembedded. Passing 0 for the widget argument will only unembed the widget, and the ownership of the currently embedded widget will be passed on to the caller. Every child widget that are embedded will also be embedded and their proxy widget destroyed.

Note that widgets with the Qt::WA_PaintOnScreen widget attribute set and widgets that wrap an external application or controller cannot be embedded. Examples are QGLWidget and QAxWidget.

See also widget().

[virtual protected] void QGraphicsProxyWidget::showEvent(QShowEvent *event)

Reimplemented from QGraphicsWidget::showEvent().

[virtual protected] QSizeF QGraphicsProxyWidget::sizeHint(Qt::SizeHint which, const QSizeF &constraint = QSizeF()) const

Reimplemented from QGraphicsLayoutItem::sizeHint().

QRectF QGraphicsProxyWidget::subWidgetRect(const QWidget *widget) const

Returns the rectangle for widget, which must be a descendant of widget(), or widget() itself, in this proxy item's local coordinates.

If no widget is embedded, widget is 0, or widget is not a descendant of the embedded widget, this function returns an empty QRectF.

See also widget().

[virtual] int QGraphicsProxyWidget::type() const

Reimplemented from QGraphicsItem::type().

[virtual protected] void QGraphicsProxyWidget::ungrabMouseEvent(QEvent *event)

Reimplemented from QGraphicsWidget::ungrabMouseEvent().

[virtual protected] void QGraphicsProxyWidget::wheelEvent(QGraphicsSceneWheelEvent *event)

Reimplemented from QGraphicsItem::wheelEvent().

QWidget *QGraphicsProxyWidget::widget() const

Returns a pointer to the embedded widget.

See also setWidget().