<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/xhtml;charset=UTF-8"/>
<title>Qwt Polar User's Guide: QwtPolarMagnifier Class Reference</title>
<link href="tabs.css" rel="stylesheet" type="text/css"/>
<link href="doxygen.css" rel="stylesheet" type="text/css"/>
</head>
<body>
<!-- Generated by Doxygen 1.7.4 -->
<div id="top">
<div id="titlearea">
<table cellspacing="0" cellpadding="0">
<tbody>
<tr style="height: 56px;">
<td style="padding-left: 0.5em;">
<div id="projectname">Qwt Polar User's Guide <span id="projectnumber">0.1.0</span></div>
</td>
</tr>
</tbody>
</table>
</div>
<div id="navrow1" class="tabs">
<ul class="tablist">
<li><a href="index.html"><span>Main Page</span></a></li>
<li><a href="pages.html"><span>Related Pages</span></a></li>
<li class="current"><a href="annotated.html"><span>Classes</span></a></li>
<li><a href="files.html"><span>Files</span></a></li>
</ul>
</div>
<div id="navrow2" class="tabs2">
<ul class="tablist">
<li><a href="annotated.html"><span>Class List</span></a></li>
<li><a href="classes.html"><span>Class Index</span></a></li>
<li><a href="inherits.html"><span>Class Hierarchy</span></a></li>
<li><a href="functions.html"><span>Class Members</span></a></li>
</ul>
</div>
</div>
<div class="header">
<div class="summary">
<a href="#pub-methods">Public Member Functions</a> |
<a href="#pro-methods">Protected Member Functions</a> </div>
<div class="headertitle">
<div class="title">QwtPolarMagnifier Class Reference</div> </div>
</div>
<div class="contents">
<!-- doxytag: class="QwtPolarMagnifier" -->
<p><a class="el" href="class_qwt_polar_magnifier.html" title="QwtPolarMagnifier provides zooming, by magnifying in steps.">QwtPolarMagnifier</a> provides zooming, by magnifying in steps.
<a href="class_qwt_polar_magnifier.html#details">More...</a></p>
<p><code>#include <<a class="el" href="qwt__polar__magnifier_8h_source.html">qwt_polar_magnifier.h</a>></code></p>
<p><a href="class_qwt_polar_magnifier-members.html">List of all members.</a></p>
<table class="memberdecls">
<tr><td colspan="2"><h2><a name="pub-methods"></a>
Public Member Functions</h2></td></tr>
<tr><td class="memItemLeft" align="right" valign="top"> </td><td class="memItemRight" valign="bottom"><a class="el" href="class_qwt_polar_magnifier.html#ae18757a8ee2be73c4cf264720cb37d18">QwtPolarMagnifier</a> (<a class="el" href="class_qwt_polar_canvas.html">QwtPolarCanvas</a> *)</td></tr>
<tr><td class="memItemLeft" align="right" valign="top">virtual </td><td class="memItemRight" valign="bottom"><a class="el" href="class_qwt_polar_magnifier.html#ae8e07b7b25186ef3db390f2792e960d5">~QwtPolarMagnifier</a> ()</td></tr>
<tr><td class="memItemLeft" align="right" valign="top">void </td><td class="memItemRight" valign="bottom"><a class="el" href="class_qwt_polar_magnifier.html#a87548a332156609548d036bce63239cf">setUnzoomKey</a> (int key, int modifiers)</td></tr>
<tr><td class="memItemLeft" align="right" valign="top">void </td><td class="memItemRight" valign="bottom"><a class="el" href="class_qwt_polar_magnifier.html#a6a68d42d2b1d56576408f07dbb197f32">getUnzoomKey</a> (int &key, int &modifiers) const </td></tr>
<tr><td class="memItemLeft" align="right" valign="top"><a class="el" href="class_qwt_polar_plot.html">QwtPolarPlot</a> * </td><td class="memItemRight" valign="bottom"><a class="el" href="class_qwt_polar_magnifier.html#aabb702a524ca685d410005003c6fdf52">plot</a> ()</td></tr>
<tr><td class="memItemLeft" align="right" valign="top">const <a class="el" href="class_qwt_polar_plot.html">QwtPolarPlot</a> * </td><td class="memItemRight" valign="bottom"><a class="el" href="class_qwt_polar_magnifier.html#a183034e5548f07d71e46984c1b5591fb">plot</a> () const </td></tr>
<tr><td class="memItemLeft" align="right" valign="top"><a class="el" href="class_qwt_polar_canvas.html">QwtPolarCanvas</a> * </td><td class="memItemRight" valign="bottom"><a class="el" href="class_qwt_polar_magnifier.html#ab7542ea6d40639e29fd5e802220922eb">canvas</a> ()</td></tr>
<tr><td class="memItemLeft" align="right" valign="top">const <a class="el" href="class_qwt_polar_canvas.html">QwtPolarCanvas</a> * </td><td class="memItemRight" valign="bottom"><a class="el" href="class_qwt_polar_magnifier.html#a8f27d27d30efeb717daea14d8d9228f9">canvas</a> () const </td></tr>
<tr><td colspan="2"><h2><a name="pro-methods"></a>
Protected Member Functions</h2></td></tr>
<tr><td class="memItemLeft" align="right" valign="top">virtual void </td><td class="memItemRight" valign="bottom"><a class="el" href="class_qwt_polar_magnifier.html#a5baa0adfe77369414a52941d4b894b7f">rescale</a> (double factor)</td></tr>
<tr><td class="memItemLeft" align="right" valign="top">void </td><td class="memItemRight" valign="bottom"><a class="el" href="class_qwt_polar_magnifier.html#a7785d799a0fd09225baaefaa36de9671">unzoom</a> ()</td></tr>
<tr><td class="memItemLeft" align="right" valign="top">virtual void </td><td class="memItemRight" valign="bottom"><a class="el" href="class_qwt_polar_magnifier.html#a5276d05e09936f608d6e7d06d5f58ace">widgetKeyPressEvent</a> (QKeyEvent *)</td></tr>
</table>
<hr/><a name="details" id="details"></a><h2>Detailed Description</h2>
<div class="textblock"><p><a class="el" href="class_qwt_polar_magnifier.html" title="QwtPolarMagnifier provides zooming, by magnifying in steps.">QwtPolarMagnifier</a> provides zooming, by magnifying in steps. </p>
<p>Using QwtPlotMagnifier a plot can be zoomed in/out in steps using keys, the mouse wheel or moving a mouse button in vertical direction.</p>
<p>Together with <a class="el" href="class_qwt_polar_panner.html" title="QwtPolarPanner provides panning of a polar plot canvas.">QwtPolarPanner</a> it is possible to implement an individual navigation of the plot canvas.</p>
<dl class="see"><dt><b>See also:</b></dt><dd><a class="el" href="class_qwt_polar_panner.html" title="QwtPolarPanner provides panning of a polar plot canvas.">QwtPolarPanner</a>, <a class="el" href="class_qwt_polar_plot.html" title="A plotting widget, displaying a polar coordinate system.">QwtPolarPlot</a>, <a class="el" href="class_qwt_polar_canvas.html" title="Canvas of a QwtPolarPlot.">QwtPolarCanvas</a> </dd></dl>
</div><hr/><h2>Constructor & Destructor Documentation</h2>
<a class="anchor" id="ae18757a8ee2be73c4cf264720cb37d18"></a><!-- doxytag: member="QwtPolarMagnifier::QwtPolarMagnifier" ref="ae18757a8ee2be73c4cf264720cb37d18" args="(QwtPolarCanvas *)" -->
<div class="memitem">
<div class="memproto">
<table class="memname">
<tr>
<td class="memname">QwtPolarMagnifier::QwtPolarMagnifier </td>
<td>(</td>
<td class="paramtype"><a class="el" href="class_qwt_polar_canvas.html">QwtPolarCanvas</a> * </td>
<td class="paramname"><em>canvas</em></td><td>)</td>
<td><code> [explicit]</code></td>
</tr>
</table>
</div>
<div class="memdoc">
<p>Constructor </p>
<dl><dt><b>Parameters:</b></dt><dd>
<table class="params">
<tr><td class="paramname">canvas</td><td>Plot canvas to be magnified </td></tr>
</table>
</dd>
</dl>
</div>
</div>
<a class="anchor" id="ae8e07b7b25186ef3db390f2792e960d5"></a><!-- doxytag: member="QwtPolarMagnifier::~QwtPolarMagnifier" ref="ae8e07b7b25186ef3db390f2792e960d5" args="()" -->
<div class="memitem">
<div class="memproto">
<table class="memname">
<tr>
<td class="memname">QwtPolarMagnifier::~QwtPolarMagnifier </td>
<td>(</td>
<td class="paramname"></td><td>)</td>
<td><code> [virtual]</code></td>
</tr>
</table>
</div>
<div class="memdoc">
<p>Destructor. </p>
</div>
</div>
<hr/><h2>Member Function Documentation</h2>
<a class="anchor" id="ab7542ea6d40639e29fd5e802220922eb"></a><!-- doxytag: member="QwtPolarMagnifier::canvas" ref="ab7542ea6d40639e29fd5e802220922eb" args="()" -->
<div class="memitem">
<div class="memproto">
<table class="memname">
<tr>
<td class="memname"><a class="el" href="class_qwt_polar_canvas.html">QwtPolarCanvas</a> * QwtPolarMagnifier::canvas </td>
<td>(</td>
<td class="paramname"></td><td>)</td>
<td></td>
</tr>
</table>
</div>
<div class="memdoc">
<p>Return observed plot canvas. </p>
</div>
</div>
<a class="anchor" id="a8f27d27d30efeb717daea14d8d9228f9"></a><!-- doxytag: member="QwtPolarMagnifier::canvas" ref="a8f27d27d30efeb717daea14d8d9228f9" args="() const " -->
<div class="memitem">
<div class="memproto">
<table class="memname">
<tr>
<td class="memname">const <a class="el" href="class_qwt_polar_canvas.html">QwtPolarCanvas</a> * QwtPolarMagnifier::canvas </td>
<td>(</td>
<td class="paramname"></td><td>)</td>
<td> const</td>
</tr>
</table>
</div>
<div class="memdoc">
<dl class="return"><dt><b>Returns:</b></dt><dd>observed plot canvas </dd></dl>
</div>
</div>
<a class="anchor" id="a6a68d42d2b1d56576408f07dbb197f32"></a><!-- doxytag: member="QwtPolarMagnifier::getUnzoomKey" ref="a6a68d42d2b1d56576408f07dbb197f32" args="(int &key, int &modifiers) const " -->
<div class="memitem">
<div class="memproto">
<table class="memname">
<tr>
<td class="memname">void QwtPolarMagnifier::getUnzoomKey </td>
<td>(</td>
<td class="paramtype">int & </td>
<td class="paramname"><em>key</em>, </td>
</tr>
<tr>
<td class="paramkey"></td>
<td></td>
<td class="paramtype">int & </td>
<td class="paramname"><em>modifiers</em> </td>
</tr>
<tr>
<td></td>
<td>)</td>
<td></td><td> const</td>
</tr>
</table>
</div>
<div class="memdoc">
<dl class="return"><dt><b>Returns:</b></dt><dd>Key, and modifiers that are used for unzooming</dd></dl>
<dl><dt><b>Parameters:</b></dt><dd>
<table class="params">
<tr><td class="paramname">key</td><td>Key code </td></tr>
<tr><td class="paramname">modifiers</td><td>Modifiers </td></tr>
</table>
</dd>
</dl>
<dl class="see"><dt><b>See also:</b></dt><dd><a class="el" href="class_qwt_polar_magnifier.html#a87548a332156609548d036bce63239cf">setUnzoomKey()</a>, <a class="el" href="class_qwt_polar_plot.html#a43f40adc59f7acb4f609e48be2327ade">QwtPolarPlot::unzoom()</a> </dd></dl>
</div>
</div>
<a class="anchor" id="a183034e5548f07d71e46984c1b5591fb"></a><!-- doxytag: member="QwtPolarMagnifier::plot" ref="a183034e5548f07d71e46984c1b5591fb" args="() const " -->
<div class="memitem">
<div class="memproto">
<table class="memname">
<tr>
<td class="memname">const <a class="el" href="class_qwt_polar_plot.html">QwtPolarPlot</a> * QwtPolarMagnifier::plot </td>
<td>(</td>
<td class="paramname"></td><td>)</td>
<td> const</td>
</tr>
</table>
</div>
<div class="memdoc">
<p>Return observed plot. </p>
</div>
</div>
<a class="anchor" id="aabb702a524ca685d410005003c6fdf52"></a><!-- doxytag: member="QwtPolarMagnifier::plot" ref="aabb702a524ca685d410005003c6fdf52" args="()" -->
<div class="memitem">
<div class="memproto">
<table class="memname">
<tr>
<td class="memname"><a class="el" href="class_qwt_polar_plot.html">QwtPolarPlot</a> * QwtPolarMagnifier::plot </td>
<td>(</td>
<td class="paramname"></td><td>)</td>
<td></td>
</tr>
</table>
</div>
<div class="memdoc">
<p>Return observed plot. </p>
</div>
</div>
<a class="anchor" id="a5baa0adfe77369414a52941d4b894b7f"></a><!-- doxytag: member="QwtPolarMagnifier::rescale" ref="a5baa0adfe77369414a52941d4b894b7f" args="(double factor)" -->
<div class="memitem">
<div class="memproto">
<table class="memname">
<tr>
<td class="memname">void QwtPolarMagnifier::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 zoomed area </p>
<dl><dt><b>Parameters:</b></dt><dd>
<table class="params">
<tr><td class="paramname">factor</td><td>A value < 1.0 zooms in, a value > 1.0 zooms out. </td></tr>
</table>
</dd>
</dl>
</div>
</div>
<a class="anchor" id="a87548a332156609548d036bce63239cf"></a><!-- doxytag: member="QwtPolarMagnifier::setUnzoomKey" ref="a87548a332156609548d036bce63239cf" args="(int key, int modifiers)" -->
<div class="memitem">
<div class="memproto">
<table class="memname">
<tr>
<td class="memname">void QwtPolarMagnifier::setUnzoomKey </td>
<td>(</td>
<td class="paramtype">int </td>
<td class="paramname"><em>key</em>, </td>
</tr>
<tr>
<td class="paramkey"></td>
<td></td>
<td class="paramtype">int </td>
<td class="paramname"><em>modifiers</em> </td>
</tr>
<tr>
<td></td>
<td>)</td>
<td></td><td></td>
</tr>
</table>
</div>
<div class="memdoc">
<p>Assign key and modifiers, that are used for unzooming The default combination is Qt::Key_Home + Qt::NoModifier.</p>
<dl><dt><b>Parameters:</b></dt><dd>
<table class="params">
<tr><td class="paramname">key</td><td>Key code </td></tr>
<tr><td class="paramname">modifiers</td><td>Modifiers </td></tr>
</table>
</dd>
</dl>
<dl class="see"><dt><b>See also:</b></dt><dd><a class="el" href="class_qwt_polar_magnifier.html#a6a68d42d2b1d56576408f07dbb197f32">getUnzoomKey()</a>, <a class="el" href="class_qwt_polar_plot.html#a43f40adc59f7acb4f609e48be2327ade">QwtPolarPlot::unzoom()</a> </dd></dl>
</div>
</div>
<a class="anchor" id="a7785d799a0fd09225baaefaa36de9671"></a><!-- doxytag: member="QwtPolarMagnifier::unzoom" ref="a7785d799a0fd09225baaefaa36de9671" args="()" -->
<div class="memitem">
<div class="memproto">
<table class="memname">
<tr>
<td class="memname">void QwtPolarMagnifier::unzoom </td>
<td>(</td>
<td class="paramname"></td><td>)</td>
<td><code> [protected]</code></td>
</tr>
</table>
</div>
<div class="memdoc">
<p>Unzoom the plot widget. </p>
</div>
</div>
<a class="anchor" id="a5276d05e09936f608d6e7d06d5f58ace"></a><!-- doxytag: member="QwtPolarMagnifier::widgetKeyPressEvent" ref="a5276d05e09936f608d6e7d06d5f58ace" args="(QKeyEvent *)" -->
<div class="memitem">
<div class="memproto">
<table class="memname">
<tr>
<td class="memname">void QwtPolarMagnifier::widgetKeyPressEvent </td>
<td>(</td>
<td class="paramtype">QKeyEvent * </td>
<td class="paramname"><em>ke</em></td><td>)</td>
<td><code> [protected, virtual]</code></td>
</tr>
</table>
</div>
<div class="memdoc">
<p>Handle a key press event for the observed widget.</p>
<dl><dt><b>Parameters:</b></dt><dd>
<table class="params">
<tr><td class="paramname">ke</td><td>Key event </td></tr>
</table>
</dd>
</dl>
</div>
</div>
</div>
<hr class="footer"/><address class="footer"><small>Generated on Sun Jul 17 2011 for Qwt Polar User's Guide by 
<a href="http://www.doxygen.org/index.html">
<img class="footer" src="doxygen.png" alt="doxygen"/></a> 1.7.4 </small></address>
</body>
</html>
