Man page - qwtplotzoneitem(3)

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Manual

QwtPlotZoneItem

NAME
SYNOPSIS
Public Member Functions
Additional Inherited Members
Detailed Description
Constructor & Destructor Documentation
QwtPlotZoneItem::QwtPlotZoneItem () [explicit]
Member Function Documentation
QRectF QwtPlotZoneItem::boundingRect () const [virtual]
const QBrush & QwtPlotZoneItem::brush () const
void QwtPlotZoneItem::draw (QPainter * painter, const QwtScaleMap & xMap,const QwtScaleMap & yMap, const QRectF & canvasRect) const [virtual]
QwtInterval QwtPlotZoneItem::interval () const
Qt::Orientation QwtPlotZoneItem::orientation ()
const QPen & QwtPlotZoneItem::pen () const
int QwtPlotZoneItem::rtti () const [virtual]
void QwtPlotZoneItem::setBrush (const QBrush & brush)
void QwtPlotZoneItem::setInterval (double min, double max)
void QwtPlotZoneItem::setInterval (const QwtInterval & interval)
void QwtPlotZoneItem::setOrientation (Qt::Orientation orientation)
void QwtPlotZoneItem::setPen (const QColor & color, qreal width = 0.0,Qt::PenStyle style = Qt::SolidLine)
void QwtPlotZoneItem::setPen (const QPen & pen)
Author

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NAME

QwtPlotZoneItem - A plot item, which displays a zone.

SYNOPSIS

#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 zone

Parameters:

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 (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()

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()

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()

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()

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

Generated automatically by Doxygen for Qwt User’s Guide from the source code.

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