332 lines
7.0 KiB
Groff
332 lines
7.0 KiB
Groff
.TH "QwtPlotZoneItem" 3 "Sun Jul 18 2021" "Version 6.2.0" "Qwt User's Guide" \" -*- nroff -*-
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.ad l
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.nh
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.SH NAME
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QwtPlotZoneItem \- A plot item, which displays a zone\&.
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.SH SYNOPSIS
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.br
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.PP
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.PP
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\fC#include <qwt_plot_zoneitem\&.h>\fP
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.PP
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Inherits \fBQwtPlotItem\fP\&.
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.SS "Public Member Functions"
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.in +1c
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.ti -1c
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.RI "\fBQwtPlotZoneItem\fP ()"
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.br
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.RI "Constructor\&. "
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.ti -1c
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.RI "virtual \fB~QwtPlotZoneItem\fP ()"
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.br
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.RI "Destructor\&. "
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.ti -1c
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.RI "virtual int \fBrtti\fP () const override"
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.br
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.ti -1c
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.RI "void \fBsetOrientation\fP (Qt::Orientation)"
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.br
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.RI "Set the orientation of the zone\&. "
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.ti -1c
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.RI "Qt::Orientation \fBorientation\fP () const"
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.br
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.ti -1c
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.RI "void \fBsetInterval\fP (double min, double max)"
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.br
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.ti -1c
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.RI "void \fBsetInterval\fP (const \fBQwtInterval\fP &)"
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.br
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.ti -1c
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.RI "\fBQwtInterval\fP \fBinterval\fP () const"
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.br
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.ti -1c
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.RI "void \fBsetPen\fP (const QColor &, qreal width=0\&.0, Qt::PenStyle=Qt::SolidLine)"
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.br
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.ti -1c
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.RI "void \fBsetPen\fP (const QPen &)"
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.br
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.RI "Assign a pen\&. "
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.ti -1c
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.RI "const QPen & \fBpen\fP () const"
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.br
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.ti -1c
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.RI "void \fBsetBrush\fP (const QBrush &)"
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.br
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.RI "Assign a brush\&. "
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.ti -1c
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.RI "const QBrush & \fBbrush\fP () const"
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.br
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.ti -1c
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.RI "virtual void \fBdraw\fP (QPainter *, const \fBQwtScaleMap\fP &, const \fBQwtScaleMap\fP &, const QRectF &canvasRect) const override"
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.br
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.ti -1c
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.RI "virtual QRectF \fBboundingRect\fP () const override"
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.br
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.in -1c
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.SS "Additional Inherited Members"
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.SH "Detailed Description"
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.PP
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A plot item, which displays a zone\&.
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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\&.
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.PP
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\fBNote\fP
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.RS 4
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For displaying an area that is bounded for x and y coordinates use \fBQwtPlotShapeItem\fP
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.RE
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.PP
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.PP
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Definition at line 33 of file qwt_plot_zoneitem\&.h\&.
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.SH "Constructor & Destructor Documentation"
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.PP
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.SS "QwtPlotZoneItem::QwtPlotZoneItem ()\fC [explicit]\fP"
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.PP
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Constructor\&. Initializes the zone with no pen and a semi transparent gray brush
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.PP
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Sets the following item attributes:
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.PP
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.IP "\(bu" 2
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\fBQwtPlotItem::AutoScale\fP: false
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.IP "\(bu" 2
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\fBQwtPlotItem::Legend\fP: false
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.PP
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.PP
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The z value is initialized by 5
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.PP
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\fBSee also\fP
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.RS 4
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\fBQwtPlotItem::setItemAttribute()\fP, \fBQwtPlotItem::setZ()\fP
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.RE
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.PP
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.PP
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Definition at line 50 of file qwt_plot_zoneitem\&.cpp\&.
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.SH "Member Function Documentation"
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.PP
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.SS "QRectF QwtPlotZoneItem::boundingRect () const\fC [override]\fP, \fC [virtual]\fP"
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The bounding rectangle is build from the interval in one direction and something invalid for the opposite direction\&.
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.PP
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\fBReturns\fP
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.RS 4
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An invalid rectangle with valid boundaries in one direction
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.RE
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.PP
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.PP
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Reimplemented from \fBQwtPlotItem\fP\&.
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.PP
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Definition at line 297 of file qwt_plot_zoneitem\&.cpp\&.
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.SS "const QBrush & QwtPlotZoneItem::brush () const"
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.PP
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\fBReturns\fP
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.RS 4
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Brush used to fill the zone
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.RE
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.PP
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\fBSee also\fP
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.RS 4
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\fBsetPen()\fP, \fBbrush()\fP
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.RE
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.PP
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.PP
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Definition at line 138 of file qwt_plot_zoneitem\&.cpp\&.
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.SS "void QwtPlotZoneItem::draw (QPainter * painter, const \fBQwtScaleMap\fP & xMap, const \fBQwtScaleMap\fP & yMap, const QRectF & canvasRect) const\fC [override]\fP, \fC [virtual]\fP"
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Draw the zone
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.PP
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\fBParameters\fP
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.RS 4
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\fIpainter\fP Painter
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.br
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\fIxMap\fP x Scale Map
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.br
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\fIyMap\fP y Scale Map
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.br
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\fIcanvasRect\fP Contents rectangle of the canvas in painter coordinates
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.RE
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.PP
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.PP
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Implements \fBQwtPlotItem\fP\&.
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.PP
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Definition at line 223 of file qwt_plot_zoneitem\&.cpp\&.
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.SS "\fBQwtInterval\fP QwtPlotZoneItem::interval () const"
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.PP
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\fBReturns\fP
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.RS 4
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Zone interval
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.RE
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.PP
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\fBSee also\fP
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.RS 4
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\fBsetInterval()\fP, \fBorientation()\fP
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.RE
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.PP
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.PP
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Definition at line 209 of file qwt_plot_zoneitem\&.cpp\&.
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.SS "Qt::Orientation QwtPlotZoneItem::orientation () const"
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.PP
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\fBReturns\fP
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.RS 4
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Orientation of the zone
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.RE
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.PP
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\fBSee also\fP
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.RS 4
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\fBsetOrientation()\fP
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.RE
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.PP
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.PP
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Definition at line 165 of file qwt_plot_zoneitem\&.cpp\&.
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.SS "const QPen & QwtPlotZoneItem::pen () const"
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.PP
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\fBReturns\fP
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.RS 4
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Pen used to draw the border lines
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.RE
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.PP
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\fBSee also\fP
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.RS 4
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\fBsetPen()\fP, \fBbrush()\fP
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.RE
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.PP
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.PP
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Definition at line 112 of file qwt_plot_zoneitem\&.cpp\&.
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.SS "int QwtPlotZoneItem::rtti () const\fC [override]\fP, \fC [virtual]\fP"
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.PP
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\fBReturns\fP
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.RS 4
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\fBQwtPlotItem::Rtti_PlotZone\fP
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.RE
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.PP
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.PP
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Reimplemented from \fBQwtPlotItem\fP\&.
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.PP
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Definition at line 68 of file qwt_plot_zoneitem\&.cpp\&.
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.SS "void QwtPlotZoneItem::setBrush (const QBrush & brush)"
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.PP
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Assign a brush\&. The brush is used to fill the zone
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.PP
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\fBParameters\fP
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.RS 4
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\fIbrush\fP Brush
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.RE
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.PP
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\fBSee also\fP
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.RS 4
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\fBpen()\fP, \fBsetBrush()\fP
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.RE
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.PP
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.PP
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Definition at line 125 of file qwt_plot_zoneitem\&.cpp\&.
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.SS "void QwtPlotZoneItem::setInterval (const \fBQwtInterval\fP & interval)"
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Set the interval of the zone
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.PP
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For a horizontal zone the interval is related to the y axis, for a vertical zone it is related to the x axis\&.
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.PP
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\fBParameters\fP
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.RS 4
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\fIinterval\fP Zone interval
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.RE
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.PP
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\fBSee also\fP
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.RS 4
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\fBinterval()\fP, \fBsetOrientation()\fP
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.RE
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.PP
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.PP
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Definition at line 196 of file qwt_plot_zoneitem\&.cpp\&.
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.SS "void QwtPlotZoneItem::setInterval (double min, double max)"
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Set the interval of the zone
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.PP
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For a horizontal zone the interval is related to the y axis, for a vertical zone it is related to the x axis\&.
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.PP
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\fBParameters\fP
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.RS 4
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\fImin\fP Minimum of the interval
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.br
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\fImax\fP Maximum of the interval
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.RE
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.PP
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\fBSee also\fP
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.RS 4
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\fBinterval()\fP, \fBsetOrientation()\fP
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.RE
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.PP
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.PP
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Definition at line 181 of file qwt_plot_zoneitem\&.cpp\&.
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.SS "void QwtPlotZoneItem::setOrientation (Qt::Orientation orientation)"
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.PP
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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\&.
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.PP
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\fBSee also\fP
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.RS 4
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\fBorientation()\fP, \fBQwtPlotItem::setAxes()\fP
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.RE
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.PP
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.PP
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Definition at line 152 of file qwt_plot_zoneitem\&.cpp\&.
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.SS "void QwtPlotZoneItem::setPen (const QColor & color, qreal width = \fC0\&.0\fP, Qt::PenStyle style = \fCQt::SolidLine\fP)"
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Build and assign a pen
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.PP
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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\&.
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.PP
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\fBParameters\fP
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.RS 4
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\fIcolor\fP Pen color
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.br
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\fIwidth\fP Pen width
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.br
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\fIstyle\fP Pen style
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.RE
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.PP
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\fBSee also\fP
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.RS 4
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\fBpen()\fP, \fBbrush()\fP
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.RE
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.PP
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.PP
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Definition at line 86 of file qwt_plot_zoneitem\&.cpp\&.
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.SS "void QwtPlotZoneItem::setPen (const QPen & pen)"
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.PP
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Assign a pen\&. The pen is used to draw the border lines of the zone
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.PP
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\fBParameters\fP
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.RS 4
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\fIpen\fP Pen
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.RE
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.PP
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\fBSee also\fP
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.RS 4
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\fBpen()\fP, \fBsetBrush()\fP
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.RE
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.PP
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.PP
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Definition at line 99 of file qwt_plot_zoneitem\&.cpp\&.
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.SH "Author"
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.PP
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Generated automatically by Doxygen for Qwt User's Guide from the source code\&.
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