Sources_For_Linux/Qwt/doc/man/man3/QwtPlotZoneItem.3

.TH "QwtPlotZoneItem" 3 "Mon Dec 28 2020" "Version 6.1.6" "Qwt User's Guide" \" -*- nroff -*-
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.SH NAME
QwtPlotZoneItem \- A plot item, which displays a zone\&.  

.SH SYNOPSIS
.br
.PP
.PP
\fC#include <qwt_plot_zoneitem\&.h>\fP
.PP
Inherits \fBQwtPlotItem\fP\&.
.SS "Public Member Functions"

.in +1c
.ti -1c
.RI "\fBQwtPlotZoneItem\fP ()"
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.RI "Constructor\&. "
.ti -1c
.RI "virtual \fB~QwtPlotZoneItem\fP ()"
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.RI "Destructor\&. "
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.RI "virtual int \fBrtti\fP () const"
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.ti -1c
.RI "void \fBsetOrientation\fP (Qt::Orientation)"
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.RI "Set the orientation of the zone\&. "
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.RI "Qt::Orientation \fBorientation\fP ()"
.br
.ti -1c
.RI "void \fBsetInterval\fP (double min, double max)"
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.RI "void \fBsetInterval\fP (const \fBQwtInterval\fP &)"
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.RI "\fBQwtInterval\fP \fBinterval\fP () const"
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.RI "void \fBsetPen\fP (const QColor &, qreal width=0\&.0, Qt::PenStyle=Qt::SolidLine)"
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.RI "void \fBsetPen\fP (const QPen &)"
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.RI "Assign a pen\&. "
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.RI "const QPen & \fBpen\fP () const"
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.RI "void \fBsetBrush\fP (const QBrush &)"
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.RI "Assign a brush\&. "
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.RI "const QBrush & \fBbrush\fP () const"
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.RI "virtual void \fBdraw\fP (QPainter *, const \fBQwtScaleMap\fP &, const \fBQwtScaleMap\fP &, const QRectF &) const"
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.RI "virtual QRectF \fBboundingRect\fP () const"
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.SS "Additional Inherited Members"
.SH "Detailed Description"
.PP 
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\&.
.PP
\fBNote\fP
.RS 4
For displaying an area that is bounded for x and y coordinates use \fBQwtPlotShapeItem\fP 
.RE
.PP

.SH "Constructor & Destructor Documentation"
.PP 
.SS "QwtPlotZoneItem::QwtPlotZoneItem ()\fC [explicit]\fP"

.PP
Constructor\&. Initializes the zone with no pen and a semi transparent gray brush
.PP
Sets the following item attributes:
.PP
.IP "\(bu" 2
\fBQwtPlotItem::AutoScale\fP: false
.IP "\(bu" 2
\fBQwtPlotItem::Legend\fP: false
.PP
.PP
The z value is initialized by 5
.PP
\fBSee also\fP
.RS 4
\fBQwtPlotItem::setItemAttribute()\fP, \fBQwtPlotItem::setZ()\fP 
.RE
.PP

.SH "Member Function Documentation"
.PP 
.SS "QRectF QwtPlotZoneItem::boundingRect () const\fC [virtual]\fP"
The bounding rectangle is build from the interval in one direction and something invalid for the opposite direction\&.
.PP
\fBReturns\fP
.RS 4
An invalid rectangle with valid boundaries in one direction 
.RE
.PP

.PP
Reimplemented from \fBQwtPlotItem\fP\&.
.SS "const QBrush & QwtPlotZoneItem::brush () const"

.PP
\fBReturns\fP
.RS 4
Brush used to fill the zone 
.RE
.PP
\fBSee also\fP
.RS 4
\fBsetPen()\fP, \fBbrush()\fP 
.RE
.PP

.SS "void QwtPlotZoneItem::draw (QPainter * painter, const \fBQwtScaleMap\fP & xMap, const \fBQwtScaleMap\fP & yMap, const QRectF & canvasRect) const\fC [virtual]\fP"
Draw the zone
.PP
\fBParameters\fP
.RS 4
\fIpainter\fP Painter 
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\fIxMap\fP x Scale Map 
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\fIyMap\fP y Scale Map 
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\fIcanvasRect\fP Contents rectangle of the canvas in painter coordinates 
.RE
.PP

.PP
Implements \fBQwtPlotItem\fP\&.
.SS "\fBQwtInterval\fP QwtPlotZoneItem::interval () const"

.PP
\fBReturns\fP
.RS 4
Zone interval 
.RE
.PP
\fBSee also\fP
.RS 4
\fBsetInterval()\fP, \fBorientation()\fP 
.RE
.PP

.SS "Qt::Orientation QwtPlotZoneItem::orientation ()"

.PP
\fBReturns\fP
.RS 4
Orientation of the zone 
.RE
.PP
\fBSee also\fP
.RS 4
\fBsetOrientation()\fP 
.RE
.PP

.SS "const QPen & QwtPlotZoneItem::pen () const"

.PP
\fBReturns\fP
.RS 4
Pen used to draw the border lines 
.RE
.PP
\fBSee also\fP
.RS 4
\fBsetPen()\fP, \fBbrush()\fP 
.RE
.PP

.SS "int QwtPlotZoneItem::rtti () const\fC [virtual]\fP"

.PP
\fBReturns\fP
.RS 4
\fBQwtPlotItem::Rtti_PlotZone\fP 
.RE
.PP

.PP
Reimplemented from \fBQwtPlotItem\fP\&.
.SS "void QwtPlotZoneItem::setBrush (const QBrush & brush)"

.PP
Assign a brush\&. The brush is used to fill the zone
.PP
\fBParameters\fP
.RS 4
\fIbrush\fP Brush 
.RE
.PP
\fBSee also\fP
.RS 4
\fBpen()\fP, \fBsetBrush()\fP 
.RE
.PP

.SS "void QwtPlotZoneItem::setInterval (const \fBQwtInterval\fP & interval)"
Set the interval of the zone
.PP
For a horizontal zone the interval is related to the y axis, for a vertical zone it is related to the x axis\&.
.PP
\fBParameters\fP
.RS 4
\fIinterval\fP Zone interval
.RE
.PP
\fBSee also\fP
.RS 4
\fBinterval()\fP, \fBsetOrientation()\fP 
.RE
.PP

.SS "void QwtPlotZoneItem::setInterval (double min, double max)"
Set the interval of the zone
.PP
For a horizontal zone the interval is related to the y axis, for a vertical zone it is related to the x axis\&.
.PP
\fBParameters\fP
.RS 4
\fImin\fP Minimum of the interval 
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\fImax\fP Maximum of the interval
.RE
.PP
\fBSee also\fP
.RS 4
\fBinterval()\fP, \fBsetOrientation()\fP 
.RE
.PP

.SS "void QwtPlotZoneItem::setOrientation (Qt::Orientation orientation)"

.PP
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\&.
.PP
\fBSee also\fP
.RS 4
\fBorientation()\fP, \fBQwtPlotItem::setAxes()\fP 
.RE
.PP

.SS "void QwtPlotZoneItem::setPen (const QColor & color, qreal width = \fC0\&.0\fP, Qt::PenStyle style = \fCQt::SolidLine\fP)"
Build and assign a pen
.PP
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\&.
.PP
\fBParameters\fP
.RS 4
\fIcolor\fP Pen color 
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\fIwidth\fP Pen width 
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\fIstyle\fP Pen style
.RE
.PP
\fBSee also\fP
.RS 4
\fBpen()\fP, \fBbrush()\fP 
.RE
.PP

.SS "void QwtPlotZoneItem::setPen (const QPen & pen)"

.PP
Assign a pen\&. The pen is used to draw the border lines of the zone
.PP
\fBParameters\fP
.RS 4
\fIpen\fP Pen 
.RE
.PP
\fBSee also\fP
.RS 4
\fBpen()\fP, \fBsetBrush()\fP 
.RE
.PP


.SH "Author"
.PP 
Generated automatically by Doxygen for Qwt User's Guide from the source code\&.