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.TH "QwtPolarMagnifier" 3 "Sun Jul 18 2021" "Version 6.2.0" "Qwt User's Guide" \" -*- nroff -*-
.ad l
.nh
.SH NAME
QwtPolarMagnifier \- \fBQwtPolarMagnifier\fP provides zooming, by magnifying in steps\&.
.SH SYNOPSIS
.br
.PP
.PP
\fC#include <qwt_polar_magnifier\&.h>\fP
.PP
Inherits \fBQwtMagnifier\fP\&.
.SS "Public Slots"
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.ti -1c
.RI "virtual void \fBrescale\fP (double factor) override"
.br
.ti -1c
.RI "void \fBunzoom\fP ()"
.br
.RI "Unzoom the plot widget\&. "
.in -1c
.SS "Public Member Functions"
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.RI "\fBQwtPolarMagnifier\fP (\fBQwtPolarCanvas\fP *)"
.br
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.RI "virtual \fB~QwtPolarMagnifier\fP ()"
.br
.RI "Destructor\&. "
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.RI "void \fBsetUnzoomKey\fP (int key, int modifiers)"
.br
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.RI "void \fBgetUnzoomKey\fP (int &key, int &modifiers) const"
.br
.ti -1c
.RI "\fBQwtPolarPlot\fP * \fBplot\fP ()"
.br
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.RI "const \fBQwtPolarPlot\fP * \fBplot\fP () const"
.br
.ti -1c
.RI "\fBQwtPolarCanvas\fP * \fBcanvas\fP ()"
.br
.ti -1c
.RI "const \fBQwtPolarCanvas\fP * \fBcanvas\fP () const"
.br
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.SS "Protected Member Functions"
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.RI "virtual void \fBwidgetKeyPressEvent\fP (QKeyEvent *) override"
.br
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.SH "Detailed Description"
.PP
\fBQwtPolarMagnifier\fP provides zooming, by magnifying in steps\&.
Using \fBQwtPlotMagnifier\fP a plot can be zoomed in/out in steps using keys, the mouse wheel or moving a mouse button in vertical direction\&.
.PP
Together with \fBQwtPolarPanner\fP it is possible to implement an individual navigation of the plot canvas\&.
.PP
\fBSee also\fP
.RS 4
\fBQwtPolarPanner\fP, \fBQwtPolarPlot\fP, \fBQwtPolarCanvas\fP
.RE
.PP
.PP
Definition at line 30 of file qwt_polar_magnifier\&.h\&.
.SH "Constructor & Destructor Documentation"
.PP
.SS "QwtPolarMagnifier::QwtPolarMagnifier (\fBQwtPolarCanvas\fP * canvas)\fC [explicit]\fP"
Constructor
.PP
\fBParameters\fP
.RS 4
\fIcanvas\fP Plot canvas to be magnified
.RE
.PP
.PP
Definition at line 34 of file qwt_polar_magnifier\&.cpp\&.
.SH "Member Function Documentation"
.PP
.SS "\fBQwtPolarCanvas\fP * QwtPolarMagnifier::canvas ()"
.PP
\fBReturns\fP
.RS 4
Observed plot canvas
.RE
.PP
.PP
Definition at line 74 of file qwt_polar_magnifier\&.cpp\&.
.SS "const \fBQwtPolarCanvas\fP * QwtPolarMagnifier::canvas () const"
.PP
\fBReturns\fP
.RS 4
Observed plot canvas
.RE
.PP
.PP
Definition at line 80 of file qwt_polar_magnifier\&.cpp\&.
.SS "void QwtPolarMagnifier::getUnzoomKey (int & key, int & modifiers) const"
.PP
\fBReturns\fP
.RS 4
Key, and modifiers that are used for unzooming
.RE
.PP
\fBParameters\fP
.RS 4
\fIkey\fP Key code
.br
\fImodifiers\fP Modifiers
.RE
.PP
\fBSee also\fP
.RS 4
\fBsetUnzoomKey()\fP, \fBQwtPolarPlot::unzoom()\fP
.RE
.PP
.PP
Definition at line 67 of file qwt_polar_magnifier\&.cpp\&.
.SS "\fBQwtPolarPlot\fP * QwtPolarMagnifier::plot ()"
.PP
\fBReturns\fP
.RS 4
Observed plot
.RE
.PP
.PP
Definition at line 86 of file qwt_polar_magnifier\&.cpp\&.
.SS "const \fBQwtPolarPlot\fP * QwtPolarMagnifier::plot () const"
.PP
\fBReturns\fP
.RS 4
observed plot
.RE
.PP
.PP
Definition at line 96 of file qwt_polar_magnifier\&.cpp\&.
.SS "void QwtPolarMagnifier::rescale (double factor)\fC [override]\fP, \fC [virtual]\fP, \fC [slot]\fP"
Zoom in/out the zoomed area
.PP
\fBParameters\fP
.RS 4
\fIfactor\fP A value < 1\&.0 zooms in, a value > 1\&.0 zooms out\&.
.RE
.PP
.PP
Definition at line 129 of file qwt_polar_magnifier\&.cpp\&.
.SS "void QwtPolarMagnifier::setUnzoomKey (int key, int modifiers)"
Assign key and modifiers, that are used for unzooming The default combination is Qt::Key_Home + Qt::NoModifier\&.
.PP
\fBParameters\fP
.RS 4
\fIkey\fP Key code
.br
\fImodifiers\fP Modifiers
.RE
.PP
\fBSee also\fP
.RS 4
\fBgetUnzoomKey()\fP, \fBQwtPolarPlot::unzoom()\fP
.RE
.PP
.PP
Definition at line 54 of file qwt_polar_magnifier\&.cpp\&.
.SS "void QwtPolarMagnifier::widgetKeyPressEvent (QKeyEvent * event)\fC [override]\fP, \fC [protected]\fP, \fC [virtual]\fP"
Handle a key press event for the observed widget\&.
.PP
\fBParameters\fP
.RS 4
\fIevent\fP Key event
.RE
.PP
.PP
Reimplemented from \fBQwtMagnifier\fP\&.
.PP
Definition at line 110 of file qwt_polar_magnifier\&.cpp\&.
.SH "Author"
.PP
Generated automatically by Doxygen for Qwt User's Guide from the source code\&.