Qwt User's Guide
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A plot item, which displays a zone. More...
#include <qwt_plot_zoneitem.h>
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 |
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.
QwtPlotZoneItem::QwtPlotZoneItem | ( | ) | [explicit] |
Constructor.
Initializes the zone with no pen and a semi transparent gray brush
Sets the following item attributes:
The z value is initialized by 5
QRectF QwtPlotZoneItem::boundingRect | ( | ) | const [virtual] |
The bounding rectangle is build from the interval in one direction and something invalid for the opposite direction.
Reimplemented from QwtPlotItem.
const QBrush & QwtPlotZoneItem::brush | ( | ) | const |
void QwtPlotZoneItem::draw | ( | QPainter * | painter, |
const QwtScaleMap & | xMap, | ||
const QwtScaleMap & | yMap, | ||
const QRectF & | canvasRect | ||
) | const [virtual] |
Draw the zone
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 |
Qt::Orientation QwtPlotZoneItem::orientation | ( | ) |
const QPen & QwtPlotZoneItem::pen | ( | ) | const |
int QwtPlotZoneItem::rtti | ( | ) | const [virtual] |
Reimplemented from QwtPlotItem.
void QwtPlotZoneItem::setBrush | ( | const QBrush & | brush | ) |
Assign a brush.
The brush is used to fill the zone
brush | Brush |
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.
min | Minimum of the interval |
max | Maximum of the interval |
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.
interval | Zone interval |
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.
void QwtPlotZoneItem::setPen | ( | const QColor & | color, |
qreal | width = 0.0 , |
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Qt::PenStyle | style = Qt::SolidLine |
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) |
void QwtPlotZoneItem::setPen | ( | const QPen & | pen | ) |
Assign a pen.
The pen is used to draw the border lines of the zone
pen | Pen |