Other Alias
A plot itemSYNOPSIS
#include <qwt_plot_zoneitem.h>
Inherits QwtPlotItem.
Public Member Functions
QwtPlotZoneItem ()
Constructor.
virtual ~QwtPlotZoneItem ()
Destructor.
virtual int rtti () const
void setOrientation (Qt::Orientation)
Set the orientation of the zone.
Qt::Orientation orientation ()
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 &) const
virtual QRectF boundingRect () const
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
Constructor & Destructor Documentation
QwtPlotZoneItem::QwtPlotZoneItem () [explicit]
Constructor. Initializes the zone with no pen and a semi transparent gray brush
Sets the following item attributes:
- QwtPlotItem::AutoScale: false
- QwtPlotItem::Legend: false
The z value is initialized by 5
See Also:
- QwtPlotItem::setItemAttribute(), QwtPlotItem::setZ()
Member Function Documentation
QRectF QwtPlotZoneItem::boundingRect () const [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.
const QBrush & QwtPlotZoneItem::brush () const
Returns:
- Brush used to fill the zone
See Also:
- setPen(), brush()
void QwtPlotZoneItem::draw (QPainter *painter, const QwtScaleMap &xMap, const QwtScaleMap &yMap, const QRectF &canvasRect) const [virtual]
Draw the zoneParameters:
-
painter Painter
xMap x Scale Map
yMap y Scale Map
canvasRect Contents rectangle of the canvas in painter coordinates
Implements QwtPlotItem.
QwtInterval QwtPlotZoneItem::interval () const
Returns:
- Zone interval
See Also:
- setInterval(), orientation()
Qt::Orientation QwtPlotZoneItem::orientation ()
Returns:
- Orientation of the zone
See Also:
- setOrientation()
const QPen & QwtPlotZoneItem::pen () const
Returns:
- Pen used to draw the border lines
See Also:
- setPen(), brush()
int QwtPlotZoneItem::rtti () const [virtual]
Returns:
- QwtPlotItem::Rtti_PlotZone
Reimplemented from QwtPlotItem.
void QwtPlotZoneItem::setBrush (const QBrush &brush)
Assign a brush. The brush is used to fill the zone
Parameters:
- brush Brush
See Also:
- pen(), setBrush()
void QwtPlotZoneItem::setInterval (doublemin, doublemax)
Set the interval of the zoneFor 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()
void QwtPlotZoneItem::setInterval (const QwtInterval &interval)
Set the interval of the zoneFor 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()
void QwtPlotZoneItem::setOrientation (Qt::Orientationorientation)
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()
void QwtPlotZoneItem::setPen (const QColor &color, qrealwidth = 0.0, Qt::PenStylestyle = Qt::SolidLine)
Build and assign a penIn 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()
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()
Author
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