.TH "QwtPolarPicker" 3 "Sun Jul 18 2021" "Version 6.2.0" "Qwt User's Guide" \" -*- nroff -*-
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.SH NAME
QwtPolarPicker \- \fBQwtPolarPicker\fP provides selections on a plot canvas\&.  

.SH SYNOPSIS
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.PP
.PP
\fC#include <qwt_polar_picker\&.h>\fP
.PP
Inherits \fBQwtPicker\fP\&.
.SS "Signals"

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.ti -1c
.RI "void \fBselected\fP (const \fBQwtPointPolar\fP &pos)"
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.RI "void \fBselected\fP (const \fBQVector\fP< \fBQwtPointPolar\fP > &points)"
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.RI "void \fBappended\fP (const \fBQwtPointPolar\fP &pos)"
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.RI "void \fBmoved\fP (const \fBQwtPointPolar\fP &pos)"
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.SS "Public Member Functions"

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.RI "\fBQwtPolarPicker\fP (\fBQwtPolarCanvas\fP *)"
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.RI "Create a polar plot picker\&. "
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.RI "virtual \fB~QwtPolarPicker\fP ()"
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.RI "Destructor\&. "
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.RI "\fBQwtPolarPicker\fP (\fBRubberBand\fP \fBrubberBand\fP, \fBDisplayMode\fP \fBtrackerMode\fP, \fBQwtPolarCanvas\fP *)"
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.RI "\fBQwtPolarPlot\fP * \fBplot\fP ()"
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.RI "const \fBQwtPolarPlot\fP * \fBplot\fP () const"
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.RI "\fBQwtPolarCanvas\fP * \fBcanvas\fP ()"
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.RI "const \fBQwtPolarCanvas\fP * \fBcanvas\fP () const"
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.RI "virtual QRect \fBpickRect\fP () const"
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.SS "Protected Member Functions"

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.RI "\fBQwtPointPolar\fP \fBinvTransform\fP (const QPoint &) const"
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.RI "virtual \fBQwtText\fP \fBtrackerText\fP (const QPoint &) const override"
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.RI "virtual \fBQwtText\fP \fBtrackerTextPolar\fP (const \fBQwtPointPolar\fP &) const"
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.RI "Translate a position into a position string\&. "
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.RI "virtual void \fBmove\fP (const QPoint &) override"
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.RI "virtual void \fBappend\fP (const QPoint &) override"
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.RI "virtual bool \fBend\fP (bool ok=true) override"
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.SS "Private Member Functions"

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.RI "virtual QPainterPath \fBpickArea\fP () const override"
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.SS "Additional Inherited Members"
.SH "Detailed Description"
.PP 
\fBQwtPolarPicker\fP provides selections on a plot canvas\&. 

\fBQwtPolarPicker\fP is a \fBQwtPicker\fP tailored for selections on a polar plot canvas\&. 
.PP
Definition at line 28 of file qwt_polar_picker\&.h\&.
.SH "Constructor & Destructor Documentation"
.PP 
.SS "QwtPolarPicker::QwtPolarPicker (\fBQwtPolarCanvas\fP * canvas)\fC [explicit]\fP"

.PP
Create a polar plot picker\&. 
.PP
\fBParameters\fP
.RS 4
\fIcanvas\fP Plot canvas to observe, also the parent object 
.RE
.PP

.PP
Definition at line 25 of file qwt_polar_picker\&.cpp\&.
.SS "QwtPolarPicker::QwtPolarPicker (\fBRubberBand\fP rubberBand, \fBDisplayMode\fP trackerMode, \fBQwtPolarCanvas\fP * canvas)\fC [explicit]\fP"
Create a plot picker
.PP
\fBParameters\fP
.RS 4
\fIrubberBand\fP Rubberband style 
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\fItrackerMode\fP Tracker mode 
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\fIcanvas\fP Plot canvas to observe, also the parent object
.RE
.PP
\fBSee also\fP
.RS 4
\fBQwtPicker\fP, QwtPicker::setSelectionFlags(), \fBQwtPicker::setRubberBand()\fP, \fBQwtPicker::setTrackerMode\fP
.PP
\fBQwtPolarPlot::autoReplot()\fP, \fBQwtPolarPlot::replot()\fP, scaleRect() 
.RE
.PP

.PP
Definition at line 43 of file qwt_polar_picker\&.cpp\&.
.SH "Member Function Documentation"
.PP 
.SS "void QwtPolarPicker::append (const QPoint & pos)\fC [override]\fP, \fC [protected]\fP, \fC [virtual]\fP"
Append a point to the selection and update rubberband and tracker\&.
.PP
\fBParameters\fP
.RS 4
\fIpos\fP Additional point 
.RE
.PP
\fBSee also\fP
.RS 4
\fBisActive\fP, \fBbegin()\fP, \fBend()\fP, \fBmove()\fP, \fBappended()\fP
.RE
.PP
\fBNote\fP
.RS 4
The \fBappended(const QPoint &)\fP, appended(const QDoublePoint &) signals are emitted\&. 
.RE
.PP

.PP
Reimplemented from \fBQwtPicker\fP\&.
.PP
Definition at line 128 of file qwt_polar_picker\&.cpp\&.
.SS "void QwtPolarPicker::appended (const \fBQwtPointPolar\fP & pos)\fC [signal]\fP"
A signal emitted when a point has been appended to the selection
.PP
\fBParameters\fP
.RS 4
\fIpos\fP Position of the appended point\&. 
.RE
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\fBSee also\fP
.RS 4
\fBappend()\fP\&. \fBmoved()\fP 
.RE
.PP

.SS "\fBQwtPolarCanvas\fP * QwtPolarPicker::canvas ()"

.PP
\fBReturns\fP
.RS 4
Observed plot canvas 
.RE
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.PP
Definition at line 56 of file qwt_polar_picker\&.cpp\&.
.SS "const \fBQwtPolarCanvas\fP * QwtPolarPicker::canvas () const"

.PP
\fBReturns\fP
.RS 4
Observed plot canvas 
.RE
.PP

.PP
Definition at line 62 of file qwt_polar_picker\&.cpp\&.
.SS "bool QwtPolarPicker::end (bool ok = \fCtrue\fP)\fC [override]\fP, \fC [protected]\fP, \fC [virtual]\fP"
Close a selection setting the state to inactive\&.
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\fBParameters\fP
.RS 4
\fIok\fP If true, complete the selection and emit selected signals otherwise discard the selection\&. 
.RE
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\fBReturns\fP
.RS 4
true if the selection is accepted, false otherwise 
.RE
.PP

.PP
Reimplemented from \fBQwtPicker\fP\&.
.PP
Definition at line 157 of file qwt_polar_picker\&.cpp\&.
.SS "\fBQwtPointPolar\fP QwtPolarPicker::invTransform (const QPoint & pos) const\fC [protected]\fP"
Translate a point from widget into plot coordinates
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\fBParameters\fP
.RS 4
\fIpos\fP Point in widget coordinates of the plot canvas 
.RE
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\fBReturns\fP
.RS 4
Point in plot coordinates 
.RE
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\fBSee also\fP
.RS 4
transform(), \fBcanvas()\fP 
.RE
.PP

.PP
Definition at line 208 of file qwt_polar_picker\&.cpp\&.
.SS "void QwtPolarPicker::move (const QPoint & pos)\fC [override]\fP, \fC [protected]\fP, \fC [virtual]\fP"
Move the last point of the selection
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\fBParameters\fP
.RS 4
\fIpos\fP New position 
.RE
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\fBSee also\fP
.RS 4
\fBisActive\fP, \fBbegin()\fP, \fBend()\fP, \fBappend()\fP
.RE
.PP
\fBNote\fP
.RS 4
The \fBmoved(const QPoint &)\fP, moved(const QDoublePoint &) signals are emitted\&. 
.RE
.PP

.PP
Reimplemented from \fBQwtPicker\fP\&.
.PP
Definition at line 143 of file qwt_polar_picker\&.cpp\&.
.SS "void QwtPolarPicker::moved (const \fBQwtPointPolar\fP & pos)\fC [signal]\fP"
A signal emitted whenever the last appended point of the selection has been moved\&.
.PP
\fBParameters\fP
.RS 4
\fIpos\fP Position of the moved last point of the selection\&. 
.RE
.PP
\fBSee also\fP
.RS 4
\fBmove()\fP, \fBappended()\fP 
.RE
.PP

.SS "QPainterPath QwtPolarPicker::pickArea () const\fC [override]\fP, \fC [private]\fP, \fC [virtual]\fP"
Find the area of the observed widget, where selection might happen\&.
.PP
\fBReturns\fP
.RS 4
\fBparentWidget()\fP->contentsRect() 
.RE
.PP

.PP
Reimplemented from \fBQwtPicker\fP\&.
.PP
Definition at line 229 of file qwt_polar_picker\&.cpp\&.
.SS "QRect QwtPolarPicker::pickRect () const\fC [virtual]\fP"

.PP
\fBReturns\fP
.RS 4
Bounding rectangle of the region, where picking is supported\&. 
.RE
.PP

.PP
Definition at line 221 of file qwt_polar_picker\&.cpp\&.
.SS "\fBQwtPolarPlot\fP * QwtPolarPicker::plot ()"

.PP
\fBReturns\fP
.RS 4
Plot widget, containing the observed plot canvas 
.RE
.PP

.PP
Definition at line 68 of file qwt_polar_picker\&.cpp\&.
.SS "const \fBQwtPolarPlot\fP * QwtPolarPicker::plot () const"

.PP
\fBReturns\fP
.RS 4
Plot widget, containing the observed plot canvas 
.RE
.PP

.PP
Definition at line 78 of file qwt_polar_picker\&.cpp\&.
.SS "void QwtPolarPicker::selected (const \fBQVector\fP< \fBQwtPointPolar\fP > & points)\fC [signal]\fP"
A signal emitting the selected points, at the end of a selection\&.
.PP
\fBParameters\fP
.RS 4
\fIpoints\fP Selected points 
.RE
.PP

.SS "void QwtPolarPicker::selected (const \fBQwtPointPolar\fP & pos)\fC [signal]\fP"
A signal emitted in case of selectionFlags() & PointSelection\&. 
.PP
\fBParameters\fP
.RS 4
\fIpos\fP Selected point 
.RE
.PP

.SS "\fBQwtText\fP QwtPolarPicker::trackerText (const QPoint & pos) const\fC [override]\fP, \fC [protected]\fP, \fC [virtual]\fP"
Translate a pixel position into a position string
.PP
\fBParameters\fP
.RS 4
\fIpos\fP Position in pixel coordinates 
.RE
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\fBReturns\fP
.RS 4
Position string 
.RE
.PP

.PP
Reimplemented from \fBQwtPicker\fP\&.
.PP
Definition at line 93 of file qwt_polar_picker\&.cpp\&.
.SS "\fBQwtText\fP QwtPolarPicker::trackerTextPolar (const \fBQwtPointPolar\fP & pos) const\fC [protected]\fP, \fC [virtual]\fP"

.PP
Translate a position into a position string\&. In case of HLineRubberBand the label is the value of the y position, in case of VLineRubberBand the value of the x position\&. Otherwise the label contains x and y position separated by a ',' \&.
.PP
The format for the double to string conversion is '%\&.4f'\&.
.PP
\fBParameters\fP
.RS 4
\fIpos\fP Position 
.RE
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\fBReturns\fP
.RS 4
Position string 
.RE
.PP

.PP
Definition at line 111 of file qwt_polar_picker\&.cpp\&.

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