QwtPlotZoneItem(3) Qwt User's Guide QwtPlotZoneItem(3) NAME QwtPlotZoneItem - A plot item, which displays a zone. SYNOPSIS #include Inherits QwtPlotItem. Public Member Functions QwtPlotZoneItem () Constructor. virtual ~QwtPlotZoneItem () Destructor. virtual int rtti () const override void setOrientation (Qt::Orientation) Set the orientation of the zone. Qt::Orientation orientation () const void setInterval (double min, double max) void setInterval (const QwtInterval &) QwtInterval interval () const void setPen (const QColor &, qreal width=0.0, Qt::PenStyle=Qt::SolidLine) void setPen (const QPen &) Assign a pen. const QPen & pen () const void setBrush (const QBrush &) Assign a brush. const QBrush & brush () const virtual void draw (QPainter *, const QwtScaleMap &, const QwtScaleMap &, const QRectF &canvasRect) const override virtual QRectF boundingRect () const override Additional Inherited Members Detailed Description A plot item, which displays a zone. A horizontal zone highlights an interval of the y axis - a vertical zone an interval of the x axis - and is unbounded in the opposite direction. It is filled with a brush and its border lines are optionally displayed with a pen. Note For displaying an area that is bounded for x and y coordinates use QwtPlotShapeItem Definition at line 33 of file qwt_plot_zoneitem.h. Constructor & Destructor Documentation QwtPlotZoneItem::QwtPlotZoneItem () [explicit] Constructor. Initializes the zone with no pen and a semi transparent gray brush Sets the following item attributes: o QwtPlotItem::AutoScale: false o QwtPlotItem::Legend: false The z value is initialized by 5 See also QwtPlotItem::setItemAttribute(), QwtPlotItem::setZ() Definition at line 50 of file qwt_plot_zoneitem.cpp. Member Function Documentation QRectF QwtPlotZoneItem::boundingRect () const [override], [virtual] The bounding rectangle is build from the interval in one direction and something invalid for the opposite direction. Returns An invalid rectangle with valid boundaries in one direction Reimplemented from QwtPlotItem. Definition at line 297 of file qwt_plot_zoneitem.cpp. const QBrush & QwtPlotZoneItem::brush () const Returns Brush used to fill the zone See also setPen(), brush() Definition at line 138 of file qwt_plot_zoneitem.cpp. void QwtPlotZoneItem::draw (QPainter * painter, const QwtScaleMap & xMap, const QwtScaleMap & yMap, const QRectF & canvasRect) const [override], [virtual] Draw the zone Parameters painter Painter xMap x Scale Map yMap y Scale Map canvasRect Contents rectangle of the canvas in painter coordinates Implements QwtPlotItem. Definition at line 223 of file qwt_plot_zoneitem.cpp. QwtInterval QwtPlotZoneItem::interval () const Returns Zone interval See also setInterval(), orientation() Definition at line 209 of file qwt_plot_zoneitem.cpp. Qt::Orientation QwtPlotZoneItem::orientation () const Returns Orientation of the zone See also setOrientation() Definition at line 165 of file qwt_plot_zoneitem.cpp. const QPen & QwtPlotZoneItem::pen () const Returns Pen used to draw the border lines See also setPen(), brush() Definition at line 112 of file qwt_plot_zoneitem.cpp. int QwtPlotZoneItem::rtti () const [override], [virtual] Returns QwtPlotItem::Rtti_PlotZone Reimplemented from QwtPlotItem. Definition at line 68 of file qwt_plot_zoneitem.cpp. void QwtPlotZoneItem::setBrush (const QBrush & brush) Assign a brush. The brush is used to fill the zone Parameters brush Brush See also pen(), setBrush() Definition at line 125 of file qwt_plot_zoneitem.cpp. void QwtPlotZoneItem::setInterval (const QwtInterval & interval) Set the interval of the zone For a horizontal zone the interval is related to the y axis, for a vertical zone it is related to the x axis. Parameters interval Zone interval See also interval(), setOrientation() Definition at line 196 of file qwt_plot_zoneitem.cpp. void QwtPlotZoneItem::setInterval (double min, double max) Set the interval of the zone For a horizontal zone the interval is related to the y axis, for a vertical zone it is related to the x axis. Parameters min Minimum of the interval max Maximum of the interval See also interval(), setOrientation() Definition at line 181 of file qwt_plot_zoneitem.cpp. void QwtPlotZoneItem::setOrientation (Qt::Orientation orientation) Set the orientation of the zone. A horizontal zone highlights an interval of the y axis, a vertical zone of the x axis. It is unbounded in the opposite direction. See also orientation(), QwtPlotItem::setAxes() Definition at line 152 of file qwt_plot_zoneitem.cpp. void QwtPlotZoneItem::setPen (const QColor & color, qreal width = 0.0, Qt::PenStyle style = Qt::SolidLine) Build and assign a pen In Qt5 the default pen width is 1.0 ( 0.0 in Qt4 ) what makes it non cosmetic ( see QPen::isCosmetic() ). This method has been introduced to hide this incompatibility. Parameters color Pen color width Pen width style Pen style See also pen(), brush() Definition at line 86 of file qwt_plot_zoneitem.cpp. void QwtPlotZoneItem::setPen (const QPen & pen) Assign a pen. The pen is used to draw the border lines of the zone Parameters pen Pen See also pen(), setBrush() Definition at line 99 of file qwt_plot_zoneitem.cpp. Author Generated automatically by Doxygen for Qwt User's Guide from the source code. Version 6.2.0 Sun Jul 18 2021 QwtPlotZoneItem(3)