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NAME

       QwtLegend -

       The legend widget.

SYNOPSIS

       #include <qwt_legend.h>

   Public Types
       enum LegendItemMode { ReadOnlyItem, ClickableItem, CheckableItem }

   Public Member Functions
       QwtLegend (QWidget *parent=NULL)
       virtual ~QwtLegend ()
       void setItemMode (LegendItemMode)
       LegendItemMode itemMode () const
       QWidget * contentsWidget ()
       const QWidget * contentsWidget () const
       void insert (const QwtLegendItemManager *, QWidget *)
       void remove (const QwtLegendItemManager *)
       QWidget * find (const QwtLegendItemManager *) const
       QwtLegendItemManager * find (const QWidget *) const
       virtual QList< QWidget * > legendItems () const
       void clear ()
       bool isEmpty () const
       uint itemCount () const
       virtual bool eventFilter (QObject *, QEvent *)
       virtual QSize sizeHint () const
       virtual int heightForWidth (int w) const
       QScrollBar * horizontalScrollBar () const
       QScrollBar * verticalScrollBar () const

   Protected Member Functions
       virtual void layoutContents ()

Detailed Description

       The legend widget.

       The QwtLegend widget is a tabular arrangement of legend items. Legend items might be any
       type of widget, but in general they will be a QwtLegendItem.

       See also:
           QwtLegendItem, QwtLegendItemManager QwtPlot

Member Enumeration Documentation

   enum QwtLegend::LegendItemMode
       Interaction mode for the legend items. The default is QwtLegend::ReadOnlyItem.

       See also:
           setItemMode(), itemMode(), QwtLegendItem::IdentifierMode QwtLegendItem::clicked(),
           QwtLegendItem::checked(), QwtPlot::legendClicked(), QwtPlot::legendChecked()

       Enumerator:

       ReadOnlyItem
              The legend item is not interactive, like a label.

       ClickableItem
              The legend item is clickable, like a push button.

       CheckableItem
              The legend item is checkable, like a checkable button.

Constructor & Destructor Documentation

   QwtLegend::QwtLegend (QWidget *parent = NULL) [explicit] Constructor
       Parameters:
           parent Parent widget

   QwtLegend::~QwtLegend () [virtual]
       Destructor.

Member Function Documentation

   void QwtLegend::clear ()
       Remove all items.

   QWidget * QwtLegend::contentsWidget () The contents widget is the only child of the viewport
       of the internal QScrollArea and the parent widget of all legend items.
       Returns:
           Container widget of the legend items

   const QWidget * QwtLegend::contentsWidget () const The contents widget is the only child of
       the viewport of the internal QScrollArea and the parent widget of all legend items.
       Returns:
           Container widget of the legend items

   bool QwtLegend::eventFilter (QObject *object, QEvent *event) [virtual] Handle
       QEvent::ChildRemoved andQEvent::LayoutRequest events for the contentsWidget().
       Parameters:
           object Object to be filtered
           event Event

   QwtLegendItemManager * QwtLegend::find (const QWidget *legendItem) const Find the widget that
       represents a plot item
       Parameters:
           legendItem Legend item

       Returns:
           Widget on the legend, or NULL

   QWidget * QwtLegend::find (const QwtLegendItemManager *plotItem) const Find the widget that
       represents a plot item
       Parameters:
           plotItem Plot item

       Returns:
           Widget on the legend, or NULL

   int QwtLegend::heightForWidth (intwidth) const [virtual] Returns:
           The preferred height, for the width w.

       Parameters:
           width Width

   QScrollBar * QwtLegend::horizontalScrollBar () const Returns:
           Horizontal scrollbar

       See also:
           verticalScrollBar()

   void QwtLegend::insert (const QwtLegendItemManager *plotItem, QWidget *legendItem) Insert a
       new item for a plot item
       Parameters:
           plotItem Plot item
           legendItem New legend item

       Note:
           The parent of item will be changed to contentsWidget()

   bool QwtLegend::isEmpty () const
       Return true, if there are no legend items.

   uint QwtLegend::itemCount () const
       Return the number of legend items.

   QwtLegend::LegendItemMode QwtLegend::itemMode () const See also:
           LegendItemMode

   void QwtLegend::layoutContents () [protected, virtual] Adjust contents widget and item layout
       to the size of the viewport().
   QList< QWidget * > QwtLegend::legendItems () const [virtual]
       Return a list of all legend items.

   void QwtLegend::remove (const QwtLegendItemManager *plotItem) Find the corresponding item for
       a plotItem and remove it from the item list.
       Parameters:
           plotItem Plot item

   void QwtLegend::setItemMode (LegendItemModemode) See also:
           LegendItemMode

   QSize QwtLegend::sizeHint () const [virtual]
       Return a size hint.

   QScrollBar * QwtLegend::verticalScrollBar () const Returns:
           Vertical scrollbar

       See also:
           horizontalScrollBar()

Author

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