.TH "QwtPlotMagnifier" 3 "Sun Jul 18 2021" "Version 6.2.0" "Qwt User's Guide" \" -*- nroff -*-
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.SH NAME
QwtPlotMagnifier \- \fBQwtPlotMagnifier\fP provides zooming, by magnifying in steps\&.  

.SH SYNOPSIS
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.PP
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\fC#include <qwt_plot_magnifier\&.h>\fP
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Inherits \fBQwtMagnifier\fP\&.
.SS "Public Slots"

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.RI "virtual void \fBrescale\fP (double factor) override"
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.SS "Public Member Functions"

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.RI "\fBQwtPlotMagnifier\fP (QWidget *)"
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.RI "virtual \fB~QwtPlotMagnifier\fP ()"
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.RI "Destructor\&. "
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.RI "void \fBsetAxisEnabled\fP (QwtAxisId, bool on)"
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.RI "En/Disable an axis\&. "
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.RI "bool \fBisAxisEnabled\fP (QwtAxisId) const"
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.RI "QWidget * \fBcanvas\fP ()"
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.RI "Return observed plot canvas\&. "
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.RI "const QWidget * \fBcanvas\fP () const"
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.RI "Return Observed plot canvas\&. "
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.RI "\fBQwtPlot\fP * \fBplot\fP ()"
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.RI "Return plot widget, containing the observed plot canvas\&. "
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.RI "const \fBQwtPlot\fP * \fBplot\fP () const"
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.RI "Return plot widget, containing the observed plot canvas\&. "
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.SS "Additional Inherited Members"
.SH "Detailed Description"
.PP 
\fBQwtPlotMagnifier\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\&.
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Together with \fBQwtPlotZoomer\fP and \fBQwtPlotPanner\fP it is possible to implement individual and powerful navigation of the plot canvas\&.
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\fBSee also\fP
.RS 4
\fBQwtPlotZoomer\fP, \fBQwtPlotPanner\fP, \fBQwtPlot\fP 
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Definition at line 30 of file qwt_plot_magnifier\&.h\&.
.SH "Constructor & Destructor Documentation"
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.SS "QwtPlotMagnifier::QwtPlotMagnifier (QWidget * canvas)\fC [explicit]\fP"
Constructor 
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\fBParameters\fP
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\fIcanvas\fP Plot canvas to be magnified 
.RE
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Definition at line 30 of file qwt_plot_magnifier\&.cpp\&.
.SH "Member Function Documentation"
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.SS "bool QwtPlotMagnifier::isAxisEnabled (QwtAxisId axisId) const"
Test if an axis is enabled
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\fBParameters\fP
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\fIaxisId\fP Axis 
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\fBReturns\fP
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True, if the axis is enabled
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\fBSee also\fP
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\fBsetAxisEnabled()\fP 
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Definition at line 67 of file qwt_plot_magnifier\&.cpp\&.
.SS "void QwtPlotMagnifier::rescale (double factor)\fC [override]\fP, \fC [virtual]\fP, \fC [slot]\fP"
Zoom in/out the axes scales 
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\fBParameters\fP
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\fIfactor\fP A value < 1\&.0 zooms in, a value > 1\&.0 zooms out\&. 
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Definition at line 111 of file qwt_plot_magnifier\&.cpp\&.
.SS "void QwtPlotMagnifier::setAxisEnabled (QwtAxisId axisId, bool on)"

.PP
En/Disable an axis\&. Only Axes that are enabled will be zoomed\&. All other axes will remain unchanged\&.
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\fBParameters\fP
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\fIaxisId\fP Axis 
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\fIon\fP On/Off
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\fBSee also\fP
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\fBisAxisEnabled()\fP 
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Definition at line 53 of file qwt_plot_magnifier\&.cpp\&.

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