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<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"><html><head><meta http-equiv="Content-Type" content="text/html;charset=iso-8859-1"><title>Qwt User's Guide: QwtAbstractScale Class Reference</title><link href="doxygen.css" rel="stylesheet" type="text/css"><link href="tabs.css" rel="stylesheet" type="text/css"></head><body><!-- Generated by Doxygen 1.4.6 --><div class="tabs"> <ul> <li><a href="index.html"><span>Main Page</span></a></li> <li id="current"><a href="classes.html"><span>Classes</span></a></li> <li><a href="files.html"><span>Files</span></a></li> <li><a href="pages.html"><span>Related Pages</span></a></li> </ul></div><div class="tabs"> <ul> <li><a href="classes.html"><span>Alphabetical List</span></a></li> <li><a href="annotated.html"><span>Class List</span></a></li> <li><a href="hierarchy.html"><span>Class Hierarchy</span></a></li> <li><a href="functions.html"><span>Class Members</span></a></li> </ul></div><h1>QwtAbstractScale Class Reference</h1><!-- doxytag: class="QwtAbstractScale" -->Inheritance diagram for QwtAbstractScale:<p><center><img src="class_qwt_abstract_scale__inherit__graph.png" border="0" usemap="#_qwt_abstract_scale__inherit__map" alt="Inheritance graph"></center><map name="_qwt_abstract_scale__inherit__map"><area href="class_qwt_knob.html" shape="rect" coords="7,83,84,107" alt=""><area href="class_qwt_slider.html" shape="rect" coords="108,83,188,107" alt=""><area href="class_qwt_thermo.html" shape="rect" coords="212,83,303,107" alt=""></map><center><font size="2">[<a href="graph_legend.html">legend</a>]</font></center><a href="class_qwt_abstract_scale-members.html">List of all members.</a><hr><a name="_details"></a><h2>Detailed Description</h2>An abstract base class for classes containing a scale. <p><a class="el" href="class_qwt_abstract_scale.html">QwtAbstractScale</a> is used to provide classes with a <a class="el" href="class_qwt_scale_draw.html">QwtScaleDraw</a>, and a <a class="el" href="class_qwt_scale_div.html">QwtScaleDiv</a>. The <a class="el" href="class_qwt_scale_div.html">QwtScaleDiv</a> might be set explicitely or calculated by a <a class="el" href="class_qwt_scale_engine.html">QwtScaleEngine</a>. <p><p>Definition at line <a class="el" href="qwt__abstract__scale_8h-source.html#l00029">29</a> of file <a class="el" href="qwt__abstract__scale_8h-source.html">qwt_abstract_scale.h</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_abstract_scale.html#a12aff84cebf3ace4f1b5e61737e0051">QwtAbstractScale</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_abstract_scale.html#73890593efff11427ea7a42a3ebadefd">~QwtAbstractScale</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_abstract_scale.html#91af529248b556ef130add4bcfc60bb2">setScale</a> (double vmin, double vmax, double step=0.0)</td></tr><tr><td class="memItemLeft" nowrap align="right" valign="top">void </td><td class="memItemRight" valign="bottom"><a class="el" href="class_qwt_abstract_scale.html#71a5d086aa003f62edb225b3b64024d7">setScale</a> (const <a class="el" href="class_qwt_double_interval.html">QwtDoubleInterval</a> &, double step=0.0)</td></tr><tr><td class="memItemLeft" nowrap align="right" valign="top">void </td><td class="memItemRight" valign="bottom"><a class="el" href="class_qwt_abstract_scale.html#bfb499364716be91dbbc03879fc171ab">setScale</a> (const <a class="el" href="class_qwt_scale_div.html">QwtScaleDiv</a> &s)</td></tr><tr><td class="memItemLeft" nowrap align="right" valign="top">void </td><td class="memItemRight" valign="bottom"><a class="el" href="class_qwt_abstract_scale.html#de952bd5cbde1dba015bc16b880e3a28">setAutoScale</a> ()</td></tr><tr><td class="memItemLeft" nowrap align="right" valign="top">bool </td><td class="memItemRight" valign="bottom"><a class="el" href="class_qwt_abstract_scale.html#01f1f43502a8ba14988a0bd3142d94b1">autoScale</a> () const </td></tr><tr><td class="memItemLeft" nowrap align="right" valign="top">void </td><td class="memItemRight" valign="bottom"><a class="el" href="class_qwt_abstract_scale.html#40fdb4572ad8fdec8b93766ff5f8eda8">setScaleMaxMajor</a> (int ticks)</td></tr><tr><td class="memItemLeft" nowrap align="right" valign="top">int </td><td class="memItemRight" valign="bottom"><a class="el" href="class_qwt_abstract_scale.html#5b23fafbb56bb43fd241c1839256357f">scaleMaxMinor</a> () const </td></tr><tr><td class="memItemLeft" nowrap align="right" valign="top">void </td><td class="memItemRight" valign="bottom"><a class="el" href="class_qwt_abstract_scale.html#6520bb1e52571f865b21b3710786a4db">setScaleMaxMinor</a> (int ticks)</td></tr><tr><td class="memItemLeft" nowrap align="right" valign="top">int </td><td class="memItemRight" valign="bottom"><a class="el" href="class_qwt_abstract_scale.html#4cfbcd9880297b1ca28fa824e3f4c3e6">scaleMaxMajor</a> () const </td></tr><tr><td class="memItemLeft" nowrap align="right" valign="top">void </td><td class="memItemRight" valign="bottom"><a class="el" href="class_qwt_abstract_scale.html#a00f44140af3f2b7595cb6e23371198f">setScaleEngine</a> (<a class="el" href="class_qwt_scale_engine.html">QwtScaleEngine</a> *)</td></tr><tr><td class="memItemLeft" nowrap align="right" valign="top">const <a class="el" href="class_qwt_scale_engine.html">QwtScaleEngine</a> * </td><td class="memItemRight" valign="bottom"><a class="el" href="class_qwt_abstract_scale.html#5b8084cc735933ce9338fd2df1126f0e">scaleEngine</a> () const </td></tr><tr><td class="memItemLeft" nowrap align="right" valign="top"><a class="el" href="class_qwt_scale_engine.html">QwtScaleEngine</a> * </td><td class="memItemRight" valign="bottom"><a class="el" href="class_qwt_abstract_scale.html#ea3b9d4912f1c28671f232e4100936d7">scaleEngine</a> ()</td></tr><tr><td class="memItemLeft" nowrap align="right" valign="top">const <a class="el" href="class_qwt_scale_map.html">QwtScaleMap</a> & </td><td class="memItemRight" valign="bottom"><a class="el" href="class_qwt_abstract_scale.html#68f120e12e373796b5d74199a9b8a4b0">scaleMap</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">void </td><td class="memItemRight" valign="bottom"><a class="el" href="class_qwt_abstract_scale.html#bd7c6b312b41882a3b509aadc9ada46e">rescale</a> (double vmin, double vmax, double step=0.0)</td></tr><tr><td class="memItemLeft" nowrap align="right" valign="top">void </td><td class="memItemRight" valign="bottom"><a class="el" href="class_qwt_abstract_scale.html#950c5bf521dc704b78f76c7951346288">setAbstractScaleDraw</a> (<a class="el" href="class_qwt_abstract_scale_draw.html">QwtAbstractScaleDraw</a> *)</td></tr><tr><td class="memItemLeft" nowrap align="right" valign="top">const <a class="el" href="class_qwt_abstract_scale_draw.html">QwtAbstractScaleDraw</a> * </td><td class="memItemRight" valign="bottom"><a class="el" href="class_qwt_abstract_scale.html#b3c5f30892792e5ca3d84f4409ef6216">abstractScaleDraw</a> () const </td></tr><tr><td class="memItemLeft" nowrap align="right" valign="top"><a class="el" href="class_qwt_abstract_scale_draw.html">QwtAbstractScaleDraw</a> * </td><td class="memItemRight" valign="bottom"><a class="el" href="class_qwt_abstract_scale.html#a61afdff037ef745a6dad686537cdb96">abstractScaleDraw</a> ()</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_abstract_scale.html#0dbb7bdc557c0a7b163643e41970ed6a">scaleChange</a> ()</td></tr></table><hr><h2>Constructor & Destructor Documentation</h2><a class="anchor" name="a12aff84cebf3ace4f1b5e61737e0051"></a><!-- doxytag: member="QwtAbstractScale::QwtAbstractScale" ref="a12aff84cebf3ace4f1b5e61737e0051" args="()" --><p><table class="mdTable" cellpadding="2" cellspacing="0"> <tr> <td class="mdRow"> <table cellpadding="0" cellspacing="0" border="0"> <tr> <td class="md" nowrap valign="top">QwtAbstractScale::QwtAbstractScale </td> <td class="md" valign="top">( </td> <td class="mdname1" valign="top" nowrap> </td> <td class="md" valign="top"> ) </td> <td class="md" nowrap></td> </tr> </table> </td> </tr></table><table cellspacing="5" cellpadding="0" border="0"> <tr> <td> </td> <td><p>Constructor<p>Creates a default <a class="el" href="class_qwt_scale_draw.html">QwtScaleDraw</a> and a <a class="el" href="class_qwt_linear_scale_engine.html">QwtLinearScaleEngine</a>. Autoscaling is enabled, and the stepSize is initialized by 0.0. <p>Definition at line <a class="el" href="qwt__abstract__scale_8cpp-source.html#l00053">53</a> of file <a class="el" href="qwt__abstract__scale_8cpp-source.html">qwt_abstract_scale.cpp</a>.<p>References <a class="el" href="qwt__abstract__scale_8cpp-source.html#l00127">rescale()</a>. </td> </tr></table><a class="anchor" name="73890593efff11427ea7a42a3ebadefd"></a><!-- doxytag: member="QwtAbstractScale::~QwtAbstractScale" ref="73890593efff11427ea7a42a3ebadefd" args="()" --><p><table class="mdTable" cellpadding="2" cellspacing="0"> <tr> <td class="mdRow"> <table cellpadding="0" cellspacing="0" border="0"> <tr> <td class="md" nowrap valign="top">QwtAbstractScale::~QwtAbstractScale </td> <td class="md" valign="top">( </td> <td class="mdname1" valign="top" nowrap> </td> <td class="md" valign="top"> ) </td> <td class="md" nowrap><code> [virtual]</code></td> </tr> </table> </td> </tr></table><table cellspacing="5" cellpadding="0" border="0"> <tr> <td> </td> <td><p>Destructor. <p><p>Definition at line <a class="el" href="qwt__abstract__scale_8cpp-source.html#l00060">60</a> of file <a class="el" href="qwt__abstract__scale_8cpp-source.html">qwt_abstract_scale.cpp</a>. </td> </tr></table><hr><h2>Member Function Documentation</h2><a class="anchor" name="a61afdff037ef745a6dad686537cdb96"></a><!-- doxytag: member="QwtAbstractScale::abstractScaleDraw" ref="a61afdff037ef745a6dad686537cdb96" args="()" --><p><table class="mdTable" cellpadding="2" cellspacing="0"> <tr> <td class="mdRow"> <table cellpadding="0" cellspacing="0" border="0"> <tr> <td class="md" nowrap valign="top"><a class="el" href="class_qwt_abstract_scale_draw.html">QwtAbstractScaleDraw</a> * QwtAbstractScale::abstractScaleDraw </td> <td class="md" valign="top">( </td> <td class="mdname1" valign="top" nowrap> </td> <td class="md" valign="top"> ) </td> <td class="md" nowrap><code> [protected]</code></td> </tr> </table> </td> </tr></table><table cellspacing="5" cellpadding="0" border="0"> <tr> <td> </td> <td><p><dl compact><dt><b>Returns:</b></dt><dd>Scale draw </dd></dl><dl compact><dt><b>See also:</b></dt><dd><a class="el" href="class_qwt_abstract_scale.html#950c5bf521dc704b78f76c7951346288">setAbstractScaleDraw()</a> </dd></dl><p>Definition at line <a class="el" href="qwt__abstract__scale_8cpp-source.html#l00237">237</a> of file <a class="el" href="qwt__abstract__scale_8cpp-source.html">qwt_abstract_scale.cpp</a>. </td> </tr></table><a class="anchor" name="b3c5f30892792e5ca3d84f4409ef6216"></a><!-- doxytag: member="QwtAbstractScale::abstractScaleDraw" ref="b3c5f30892792e5ca3d84f4409ef6216" args="() const " --><p><table class="mdTable" cellpadding="2" cellspacing="0"> <tr> <td class="mdRow"> <table cellpadding="0" cellspacing="0" border="0"> <tr> <td class="md" nowrap valign="top">const <a class="el" href="class_qwt_abstract_scale_draw.html">QwtAbstractScaleDraw</a> * QwtAbstractScale::abstractScaleDraw </td> <td class="md" valign="top">( </td> <td class="mdname1" valign="top" nowrap> </td> <td class="md" valign="top"> ) </td> <td class="md" nowrap> const<code> [protected]</code></td> </tr> </table> </td> </tr></table><table cellspacing="5" cellpadding="0" border="0"> <tr> <td> </td> <td><p><dl compact><dt><b>Returns:</b></dt><dd>Scale draw </dd></dl><dl compact><dt><b>See also:</b></dt><dd><a class="el" href="class_qwt_abstract_scale.html#950c5bf521dc704b78f76c7951346288">setAbstractScaleDraw()</a> </dd></dl><p>Definition at line <a class="el" href="qwt__abstract__scale_8cpp-source.html#l00246">246</a> of file <a class="el" href="qwt__abstract__scale_8cpp-source.html">qwt_abstract_scale.cpp</a>.<p>Referenced by <a class="el" href="qwt__thermo_8cpp-source.html#l00155">QwtThermo::scaleDraw()</a>, <a class="el" href="qwt__slider_8cpp-source.html#l00294">QwtSlider::scaleDraw()</a>, and <a class="el" href="qwt__knob_8cpp-source.html#l00170">QwtKnob::scaleDraw()</a>. </td> </tr></table><a class="anchor" name="01f1f43502a8ba14988a0bd3142d94b1"></a><!-- doxytag: member="QwtAbstractScale::autoScale" ref="01f1f43502a8ba14988a0bd3142d94b1" args="() const " --><p><table class="mdTable" cellpadding="2" cellspacing="0"> <tr> <td class="mdRow"> <table cellpadding="0" cellspacing="0" border="0"> <tr> <td class="md" nowrap valign="top">bool QwtAbstractScale::autoScale </td> <td class="md" valign="top">( </td> <td class="mdname1" valign="top" nowrap> </td> <td class="md" valign="top"> ) </td> <td class="md" nowrap> const</td> </tr> </table> </td> </tr></table><table cellspacing="5" cellpadding="0" border="0"> <tr> <td> </td> <td><p><dl compact><dt><b>Returns:</b></dt><dd><code>true</code> if autoscaling is enabled </dd></dl><p>Definition at line <a class="el" href="qwt__abstract__scale_8cpp-source.html#l00159">159</a> of file <a class="el" href="qwt__abstract__scale_8cpp-source.html">qwt_abstract_scale.cpp</a>.<p>Referenced by <a class="el" href="qwt__slider_8cpp-source.html#l00692">QwtSlider::rangeChange()</a>, and <a class="el" href="qwt__thermo_8cpp-source.html#l00626">QwtThermo::setRange()</a>. </td> </tr></table><a class="anchor" name="bd7c6b312b41882a3b509aadc9ada46e"></a><!-- doxytag: member="QwtAbstractScale::rescale" ref="bd7c6b312b41882a3b509aadc9ada46e" args="(double vmin, double vmax, double step=0.0)" --><p><table class="mdTable" cellpadding="2" cellspacing="0"> <tr> <td class="mdRow"> <table cellpadding="0" cellspacing="0" border="0"> <tr> <td class="md" nowrap valign="top">void QwtAbstractScale::rescale </td> <td class="md" valign="top">( </td> <td class="md" nowrap valign="top">double </td> <td class="mdname" nowrap> <em>vmin</em>, </td> </tr> <tr> <td class="md" nowrap align="right"></td> <td class="md"></td> <td class="md" nowrap>double </td> <td class="mdname" nowrap> <em>vmax</em>, </td> </tr> <tr> <td class="md" nowrap align="right"></td> <td class="md"></td> <td class="md" nowrap>double </td> <td class="mdname" nowrap> <em>stepSize</em> = <code>0.0</code></td> </tr> <tr> <td class="md"></td> <td class="md">) </td> <td class="md" colspan="2"><code> [protected]</code></td> </tr> </table> </td> </tr></table><table cellspacing="5" cellpadding="0" border="0"> <tr> <td> ⌨️ 快捷键说明
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