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<h1>QwtPlotMagnifier Class Reference</h1><!-- doxytag: class="QwtPlotMagnifier" --><!-- doxytag: inherits="QwtMagnifier" --><a class="el" href="class_qwt_plot_magnifier.html" title="QwtPlotMagnifier provides zooming, by magnifying in steps.">QwtPlotMagnifier</a> provides zooming, by magnifying in steps.
<a href="#_details">More...</a>
<p>
<code>#include <<a class="el" href="qwt__plot__magnifier_8h-source.html">qwt_plot_magnifier.h</a>></code>
<p>
<div class="dynheader">
Inheritance diagram for QwtPlotMagnifier:</div>
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<p><center><img src="class_qwt_plot_magnifier__inherit__graph.png" border="0" usemap="#_qwt_plot_magnifier__inherit__map" alt="Inheritance graph"></center>
<map name="_qwt_plot_magnifier__inherit__map">
<area shape="rect" href="class_qwt_magnifier.html" title="QwtMagnifier provides zooming, by magnifying in steps." alt="" coords="19,8,120,32"></map>
<center><font size="2">[<a href="graph_legend.html">legend</a>]</font></center></div>
<p>
<a href="class_qwt_plot_magnifier-members.html">List of all members.</a><table border="0" cellpadding="0" cellspacing="0">
<tr><td></td></tr>
<tr><td colspan="2"><br><h2>Public Member Functions</h2></td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top"> </td><td class="memItemRight" valign="bottom"><a class="el" href="class_qwt_plot_magnifier.html#b60fc56ac5a3f2e9ab879f0a9be0fdb9">QwtPlotMagnifier</a> (<a class="el" href="class_qwt_plot_canvas.html">QwtPlotCanvas</a> *)</td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top">virtual </td><td class="memItemRight" valign="bottom"><a class="el" href="class_qwt_plot_magnifier.html#38c0508241885ea49542cc0f11c740df">~QwtPlotMagnifier</a> ()</td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top">void </td><td class="memItemRight" valign="bottom"><a class="el" href="class_qwt_plot_magnifier.html#c8806df408b5ed9eac79cd38e5fc1508">setAxisEnabled</a> (int axis, bool on)</td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top">bool </td><td class="memItemRight" valign="bottom"><a class="el" href="class_qwt_plot_magnifier.html#cb4c33465bdd3c19c07ea3fa836c1f8d">isAxisEnabled</a> (int axis) const </td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top"><a class="el" href="class_qwt_plot_canvas.html">QwtPlotCanvas</a> * </td><td class="memItemRight" valign="bottom"><a class="el" href="class_qwt_plot_magnifier.html#947d94f9517bb096851738b5c2bf4b7d">canvas</a> ()</td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top">const <a class="el" href="class_qwt_plot_canvas.html">QwtPlotCanvas</a> * </td><td class="memItemRight" valign="bottom"><a class="el" href="class_qwt_plot_magnifier.html#adc3279e94ae3aad04824377b2d93829">canvas</a> () const </td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top"><a class="el" href="class_qwt_plot.html">QwtPlot</a> * </td><td class="memItemRight" valign="bottom"><a class="el" href="class_qwt_plot_magnifier.html#e0197fb4f393e149585ff62f8e29cea6">plot</a> ()</td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top">const <a class="el" href="class_qwt_plot.html">QwtPlot</a> * </td><td class="memItemRight" valign="bottom"><a class="el" href="class_qwt_plot_magnifier.html#2cc4ae00009f34f54880aea9e9837826">plot</a> () const </td></tr>
<tr><td colspan="2"><br><h2>Protected Member Functions</h2></td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top">virtual void </td><td class="memItemRight" valign="bottom"><a class="el" href="class_qwt_plot_magnifier.html#271ae5ad42c3dd12812246d2dee687ea">rescale</a> (double factor)</td></tr>
</table>
<hr><a name="_details"></a><h2>Detailed Description</h2>
<a class="el" href="class_qwt_plot_magnifier.html" title="QwtPlotMagnifier provides zooming, by magnifying in steps.">QwtPlotMagnifier</a> provides zooming, by magnifying in steps.
<p>
Using <a class="el" href="class_qwt_plot_magnifier.html" title="QwtPlotMagnifier provides zooming, by magnifying in steps.">QwtPlotMagnifier</a> a plot can be zoomed in/out in steps using keys, the mouse wheel or moving a mouse button in vertical direction.<p>
Together with <a class="el" href="class_qwt_plot_zoomer.html" title="QwtPlotZoomer provides stacked zooming for a plot widget.">QwtPlotZoomer</a> and <a class="el" href="class_qwt_plot_panner.html" title="QwtPlotPanner provides panning of a plot canvas.">QwtPlotPanner</a> it is possible to implement individual and powerful navigation of the plot canvas.<p>
<dl class="see" compact><dt><b>See also:</b></dt><dd><a class="el" href="class_qwt_plot_zoomer.html" title="QwtPlotZoomer provides stacked zooming for a plot widget.">QwtPlotZoomer</a>, <a class="el" href="class_qwt_plot_panner.html" title="QwtPlotPanner provides panning of a plot canvas.">QwtPlotPanner</a>, <a class="el" href="class_qwt_plot.html" title="A 2-D plotting widget.">QwtPlot</a> </dd></dl>
<hr><h2>Constructor & Destructor Documentation</h2>
<a class="anchor" name="b60fc56ac5a3f2e9ab879f0a9be0fdb9"></a><!-- doxytag: member="QwtPlotMagnifier::QwtPlotMagnifier" ref="b60fc56ac5a3f2e9ab879f0a9be0fdb9" args="(QwtPlotCanvas *)" -->
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<td class="memname">QwtPlotMagnifier::QwtPlotMagnifier </td>
<td>(</td>
<td class="paramtype"><a class="el" href="class_qwt_plot_canvas.html">QwtPlotCanvas</a> * </td>
<td class="paramname"> <em>canvas</em> </td>
<td> ) </td>
<td><code> [explicit]</code></td>
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<p>
Constructor <dl compact><dt><b>Parameters:</b></dt><dd>
<table border="0" cellspacing="2" cellpadding="0">
<tr><td valign="top"></td><td valign="top"><em>canvas</em> </td><td>Plot canvas to be magnified </td></tr>
</table>
</dl>
</div>
</div><p>
<a class="anchor" name="38c0508241885ea49542cc0f11c740df"></a><!-- doxytag: member="QwtPlotMagnifier::~QwtPlotMagnifier" ref="38c0508241885ea49542cc0f11c740df" args="()" -->
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<td class="memname">QwtPlotMagnifier::~QwtPlotMagnifier </td>
<td>(</td>
<td class="paramname"> </td>
<td> ) </td>
<td><code> [virtual]</code></td>
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<p>
Destructor.
<p>
</div>
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<hr><h2>Member Function Documentation</h2>
<a class="anchor" name="adc3279e94ae3aad04824377b2d93829"></a><!-- doxytag: member="QwtPlotMagnifier::canvas" ref="adc3279e94ae3aad04824377b2d93829" args="() const " -->
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<td class="memname">const <a class="el" href="class_qwt_plot_canvas.html">QwtPlotCanvas</a> * QwtPlotMagnifier::canvas </td>
<td>(</td>
<td class="paramname"> </td>
<td> ) </td>
<td> const</td>
</tr>
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<p>
Return Observed plot canvas.
<p>
</div>
</div><p>
<a class="anchor" name="947d94f9517bb096851738b5c2bf4b7d"></a><!-- doxytag: member="QwtPlotMagnifier::canvas" ref="947d94f9517bb096851738b5c2bf4b7d" args="()" -->
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<td class="memname"><a class="el" href="class_qwt_plot_canvas.html">QwtPlotCanvas</a> * QwtPlotMagnifier::canvas </td>
<td>(</td>
<td class="paramname"> </td>
<td> ) </td>
<td></td>
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<p>
Return observed plot canvas.
<p>
</div>
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<a class="anchor" name="cb4c33465bdd3c19c07ea3fa836c1f8d"></a><!-- doxytag: member="QwtPlotMagnifier::isAxisEnabled" ref="cb4c33465bdd3c19c07ea3fa836c1f8d" args="(int axis) const " -->
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<td class="memname">bool QwtPlotMagnifier::isAxisEnabled </td>
<td>(</td>
<td class="paramtype">int </td>
<td class="paramname"> <em>axis</em> </td>
<td> ) </td>
<td> const</td>
</tr>
</table>
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<p>
Test if an axis is enabled<p>
<dl compact><dt><b>Parameters:</b></dt><dd>
<table border="0" cellspacing="2" cellpadding="0">
<tr><td valign="top"></td><td valign="top"><em>axis</em> </td><td>Axis, see <a class="el" href="class_qwt_plot.html#81df699dcf9dde0752c0726b5f31e271">QwtPlot::Axis</a> </td></tr>
</table>
</dl>
<dl class="return" compact><dt><b>Returns:</b></dt><dd>True, if the axis is enabled</dd></dl>
<dl class="see" compact><dt><b>See also:</b></dt><dd><a class="el" href="class_qwt_plot_magnifier.html#c8806df408b5ed9eac79cd38e5fc1508" title="En/Disable an axis.">setAxisEnabled()</a> </dd></dl>
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<a class="anchor" name="2cc4ae00009f34f54880aea9e9837826"></a><!-- doxytag: member="QwtPlotMagnifier::plot" ref="2cc4ae00009f34f54880aea9e9837826" args="() const " -->
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<td class="memname">const <a class="el" href="class_qwt_plot.html">QwtPlot</a> * QwtPlotMagnifier::plot </td>
<td>(</td>
<td class="paramname"> </td>
<td> ) </td>
<td> const</td>
</tr>
</table>
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<div class="memdoc">
<p>
Return plot widget, containing the observed plot canvas.
<p>
</div>
</div><p>
<a class="anchor" name="e0197fb4f393e149585ff62f8e29cea6"></a><!-- doxytag: member="QwtPlotMagnifier::plot" ref="e0197fb4f393e149585ff62f8e29cea6" args="()" -->
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<td class="memname"><a class="el" href="class_qwt_plot.html">QwtPlot</a> * QwtPlotMagnifier::plot </td>
<td>(</td>
<td class="paramname"> </td>
<td> ) </td>
<td></td>
</tr>
</table>
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<div class="memdoc">
<p>
Return plot widget, containing the observed plot canvas.
<p>
</div>
</div><p>
<a class="anchor" name="271ae5ad42c3dd12812246d2dee687ea"></a><!-- doxytag: member="QwtPlotMagnifier::rescale" ref="271ae5ad42c3dd12812246d2dee687ea" args="(double factor)" -->
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<td class="memname">void QwtPlotMagnifier::rescale </td>
<td>(</td>
<td class="paramtype">double </td>
<td class="paramname"> <em>factor</em> </td>
<td> ) </td>
<td><code> [protected, virtual]</code></td>
</tr>
</table>
</div>
<div class="memdoc">
<p>
Zoom in/out the axes scales <dl compact><dt><b>Parameters:</b></dt><dd>
<table border="0" cellspacing="2" cellpadding="0">
<tr><td valign="top"></td><td valign="top"><em>factor</em> </td><td>A value < 1.0 zooms in, a value > 1.0 zooms out. </td></tr>
</table>
</dl>
<p>Implements <a class="el" href="class_qwt_magnifier.html#5c3d5bda10412a50bd403afe84e2ccee">QwtMagnifier</a>.</p>
</div>
</div><p>
<a class="anchor" name="c8806df408b5ed9eac79cd38e5fc1508"></a><!-- doxytag: member="QwtPlotMagnifier::setAxisEnabled" ref="c8806df408b5ed9eac79cd38e5fc1508" args="(int axis, bool on)" -->
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<td class="memname">void QwtPlotMagnifier::setAxisEnabled </td>
<td>(</td>
<td class="paramtype">int </td>
<td class="paramname"> <em>axis</em>, </td>
</tr>
<tr>
<td class="paramkey"></td>
<td></td>
<td class="paramtype">bool </td>
<td class="paramname"> <em>on</em></td><td> </td>
</tr>
<tr>
<td></td>
<td>)</td>
<td></td><td></td><td></td>
</tr>
</table>
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<div class="memdoc">
<p>
En/Disable an axis.
<p>
Axes that are enabled will be synchronized to the result of panning. All other axes will remain unchanged.<p>
<dl compact><dt><b>Parameters:</b></dt><dd>
<table border="0" cellspacing="2" cellpadding="0">
<tr><td valign="top"></td><td valign="top"><em>axis</em> </td><td>Axis, see <a class="el" href="class_qwt_plot.html#81df699dcf9dde0752c0726b5f31e271">QwtPlot::Axis</a> </td></tr>
<tr><td valign="top"></td><td valign="top"><em>on</em> </td><td>On/Off</td></tr>
</table>
</dl>
<dl class="see" compact><dt><b>See also:</b></dt><dd><a class="el" href="class_qwt_plot_magnifier.html#cb4c33465bdd3c19c07ea3fa836c1f8d">isAxisEnabled()</a> </dd></dl>
</div>
</div><p>
</div>
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