.TH "QwtPlotPicker" 3 "Tue Nov 20 2012" "Version 5.2.3" "Qwt User's Guide" \" -*- nroff -*-
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.SH NAME
QwtPlotPicker \- 
.SH SYNOPSIS
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.PP
.PP
\fC#include <qwt_plot_picker\&.h>\fP
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Inherits \fBQwtPicker\fP\&.
.PP
Inherited by \fBQwtPlotZoomer\fP\&.
.SS "Signals"

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.RI "void \fBappended\fP (const QwtDoublePoint &pos)"
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.RI "void \fBmoved\fP (const QwtDoublePoint &pos)"
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.RI "void \fBselected\fP (const QwtDoublePoint &pos)"
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.RI "void \fBselected\fP (const QwtDoubleRect &rect)"
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.RI "void \fBselected\fP (const QwtArray< QwtDoublePoint > &pa)"
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.SS "Public Member Functions"

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.RI "\fBQwtPlotPicker\fP (\fBQwtPlotCanvas\fP *)"
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.RI "\fBQwtPlotPicker\fP (int \fBxAxis\fP, int \fByAxis\fP, \fBQwtPlotCanvas\fP *)"
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.RI "\fBQwtPlotPicker\fP (int \fBxAxis\fP, int \fByAxis\fP, int \fBselectionFlags\fP, \fBRubberBand\fP \fBrubberBand\fP, \fBDisplayMode\fP \fBtrackerMode\fP, \fBQwtPlotCanvas\fP *)"
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.RI "virtual \fB~QwtPlotPicker\fP ()"
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.RI "\fBQwtPlotCanvas\fP * \fBcanvas\fP ()"
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.RI "const \fBQwtPlotCanvas\fP * \fBcanvas\fP () const "
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.RI "\fBQwtPlot\fP * \fBplot\fP ()"
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.RI "const \fBQwtPlot\fP * \fBplot\fP () const "
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.RI "virtual void \fBsetAxis\fP (int \fBxAxis\fP, int \fByAxis\fP)"
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.RI "int \fBxAxis\fP () const "
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.RI "int \fByAxis\fP () const "
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.SS "Protected Member Functions"

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.RI "virtual void \fBappend\fP (const QPoint &)"
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.RI "virtual bool \fBend\fP (bool ok=true)"
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.RI "QwtDoubleRect \fBinvTransform\fP (const QRect &) const "
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.RI "QwtDoublePoint \fBinvTransform\fP (const QPoint &) const "
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.RI "virtual void \fBmove\fP (const QPoint &)"
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.RI "QwtDoubleRect \fBscaleRect\fP () const "
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.RI "virtual \fBQwtText\fP \fBtrackerText\fP (const QPoint &) const "
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.RI "virtual \fBQwtText\fP \fBtrackerText\fP (const QwtDoublePoint &) const "
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.RI "QRect \fBtransform\fP (const QwtDoubleRect &) const "
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.RI "QPoint \fBtransform\fP (const QwtDoublePoint &) const "
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.SS "Additional Inherited Members"
.SH "Detailed Description"
.PP 
\fBQwtPlotPicker\fP provides selections on a plot canvas\&. 

\fBQwtPlotPicker\fP is a \fBQwtPicker\fP tailored for selections on a plot canvas\&. It is set to a x-Axis and y-Axis and translates all pixel coordinates into this coodinate system\&. 
.SH "Constructor & Destructor Documentation"
.PP 
.SS "QwtPlotPicker::QwtPlotPicker (\fBQwtPlotCanvas\fP *canvas)\fC [explicit]\fP"

.PP
Create a plot picker\&. The picker is set to those x- and y-axis of the plot that are enabled\&. If both or no x-axis are enabled, the picker is set to QwtPlot::xBottom\&. If both or no y-axis are enabled, it is set to QwtPlot::yLeft\&.
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\fBParameters:\fP
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\fIcanvas\fP Plot canvas to observe, also the parent object
.RE
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\fBSee also:\fP
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\fBQwtPlot::autoReplot()\fP, \fBQwtPlot::replot()\fP, \fBQwtPlotPicker::scaleRect()\fP 
.RE
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.SS "QwtPlotPicker::QwtPlotPicker (intxAxis, intyAxis, \fBQwtPlotCanvas\fP *canvas)\fC [explicit]\fP"
Create a plot picker
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\fBParameters:\fP
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\fIxAxis\fP Set the x axis of the picker 
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\fIyAxis\fP Set the y axis of the picker 
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\fIcanvas\fP Plot canvas to observe, also the parent object
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\fBSee also:\fP
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\fBQwtPlot::autoReplot()\fP, \fBQwtPlot::replot()\fP, \fBQwtPlotPicker::scaleRect()\fP 
.RE
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.SS "QwtPlotPicker::QwtPlotPicker (intxAxis, intyAxis, intselectionFlags, \fBRubberBand\fPrubberBand, \fBDisplayMode\fPtrackerMode, \fBQwtPlotCanvas\fP *canvas)\fC [explicit]\fP"
Create a plot picker
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\fBParameters:\fP
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\fIxAxis\fP X axis of the picker 
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\fIyAxis\fP Y axis of the picker 
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\fIselectionFlags\fP Or'd value of SelectionType, RectSelectionType and SelectionMode 
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\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
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\fBSee also:\fP
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\fBQwtPicker\fP, \fBQwtPicker::setSelectionFlags()\fP, \fBQwtPicker::setRubberBand()\fP, \fBQwtPicker::setTrackerMode\fP
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\fBQwtPlot::autoReplot()\fP, \fBQwtPlot::replot()\fP, \fBQwtPlotPicker::scaleRect()\fP 
.RE
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.SH "Member Function Documentation"
.PP 
.SS "void QwtPlotPicker::append (const QPoint &pos)\fC [protected]\fP, \fC [virtual]\fP"
Append a point to the selection and update rubberband and tracker\&.
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\fBParameters:\fP
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\fIpos\fP Additional point 
.RE
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\fBSee also:\fP
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\fBisActive\fP, \fBbegin()\fP, \fBend()\fP, \fBmove()\fP, \fBappended()\fP
.RE
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\fBNote:\fP
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The \fBappended(const QPoint &)\fP, appended(const QDoublePoint &) signals are emitted\&. 
.RE
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Reimplemented from \fBQwtPicker\fP\&.
.SS "void QwtPlotPicker::appended (const QwtDoublePoint &pos)\fC [signal]\fP"
A signal emitted when a point has been appended to the selection
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\fBParameters:\fP
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\fIpos\fP Position of the appended point\&. 
.RE
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\fBSee also:\fP
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\fBappend()\fP\&. \fBmoved()\fP 
.RE
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.SS "bool QwtPlotPicker::end (boolok = \fCtrue\fP)\fC [protected]\fP, \fC [virtual]\fP"
Close a selection setting the state to inactive\&.
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\fBParameters:\fP
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\fIok\fP If true, complete the selection and emit selected signals otherwise discard the selection\&. 
.RE
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\fBReturns:\fP
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true if the selection is accepted, false otherwise 
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Reimplemented from \fBQwtPicker\fP\&.
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Reimplemented in \fBQwtPlotZoomer\fP\&.
.SS "QwtDoubleRect QwtPlotPicker::invTransform (const QRect &rect) const\fC [protected]\fP"
Translate a rectangle from pixel into plot coordinates
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\fBReturns:\fP
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Rectangle in plot coordinates 
.RE
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\fBSee also:\fP
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\fBQwtPlotPicker::transform()\fP 
.RE
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.SS "QwtDoublePoint QwtPlotPicker::invTransform (const QPoint &pos) const\fC [protected]\fP"
Translate a point from pixel into plot coordinates 
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\fBReturns:\fP
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Point in plot coordinates 
.RE
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\fBSee also:\fP
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\fBQwtPlotPicker::transform()\fP 
.RE
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.SS "void QwtPlotPicker::move (const QPoint &pos)\fC [protected]\fP, \fC [virtual]\fP"
Move the last point of the selection
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\fBParameters:\fP
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\fIpos\fP New position 
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\fBSee also:\fP
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\fBisActive\fP, \fBbegin()\fP, \fBend()\fP, \fBappend()\fP
.RE
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\fBNote:\fP
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The \fBmoved(const QPoint &)\fP, moved(const QDoublePoint &) signals are emitted\&. 
.RE
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.PP
Reimplemented from \fBQwtPicker\fP\&.
.SS "void QwtPlotPicker::moved (const QwtDoublePoint &pos)\fC [signal]\fP"
A signal emitted whenever the last appended point of the selection has been moved\&.
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\fBParameters:\fP
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\fIpos\fP Position of the moved last point of the selection\&. 
.RE
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\fBSee also:\fP
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\fBmove()\fP, \fBappended()\fP 
.RE
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.SS "QwtDoubleRect QwtPlotPicker::scaleRect () const\fC [protected]\fP"
Return normalized bounding rect of the axes
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\fBSee also:\fP
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\fBQwtPlot::autoReplot()\fP, \fBQwtPlot::replot()\fP\&. 
.RE
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.SS "void QwtPlotPicker::selected (const QwtDoublePoint &pos)\fC [signal]\fP"
A signal emitted in case of \fBselectionFlags()\fP & PointSelection\&. 
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\fBParameters:\fP
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\fIpos\fP Selected point 
.RE
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.SS "void QwtPlotPicker::selected (const QwtDoubleRect &rect)\fC [signal]\fP"
A signal emitted in case of \fBselectionFlags()\fP & RectSelection\&. 
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\fBParameters:\fP
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\fIrect\fP Selected rectangle 
.RE
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.SS "void QwtPlotPicker::selected (const QwtArray< QwtDoublePoint > &pa)\fC [signal]\fP"
A signal emitting the selected points, at the end of a selection\&.
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\fBParameters:\fP
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\fIpa\fP Selected points 
.RE
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.SS "void QwtPlotPicker::setAxis (intxAxis, intyAxis)\fC [virtual]\fP"
Set the x and y axes of the picker
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\fBParameters:\fP
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\fIxAxis\fP X axis 
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\fIyAxis\fP Y axis 
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.PP
Reimplemented in \fBQwtPlotZoomer\fP\&.
.SS "\fBQwtText\fP QwtPlotPicker::trackerText (const QPoint &pos) const\fC [protected]\fP, \fC [virtual]\fP"
Translate a pixel position into a position string
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\fBParameters:\fP
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\fIpos\fP Position in pixel coordinates 
.RE
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\fBReturns:\fP
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Position string 
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Reimplemented from \fBQwtPicker\fP\&.
.SS "\fBQwtText\fP QwtPlotPicker::trackerText (const QwtDoublePoint &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 ',' \&.
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The format for the double to string conversion is '%\&.4f'\&.
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\fBParameters:\fP
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\fIpos\fP Position 
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\fBReturns:\fP
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Position string 
.RE
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.SS "QRect QwtPlotPicker::transform (const QwtDoubleRect &rect) const\fC [protected]\fP"
Translate a rectangle from plot into pixel coordinates 
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\fBReturns:\fP
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Rectangle in pixel coordinates 
.RE
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\fBSee also:\fP
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\fBQwtPlotPicker::invTransform()\fP 
.RE
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.SS "QPoint QwtPlotPicker::transform (const QwtDoublePoint &pos) const\fC [protected]\fP"
Translate a point from plot into pixel coordinates 
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\fBReturns:\fP
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Point in pixel coordinates 
.RE
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\fBSee also:\fP
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\fBQwtPlotPicker::invTransform()\fP 
.RE
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.SH "Author"
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Generated automatically by Doxygen for Qwt User's Guide from the source code\&.