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<title>Qwt User's Guide: QwtMathMLTextEngine Class Reference</title>
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<h1>QwtMathMLTextEngine Class Reference</h1><!-- doxytag: class="QwtMathMLTextEngine" --><!-- doxytag: inherits="QwtTextEngine" -->Inheritance diagram for QwtMathMLTextEngine:<p><center><img src="class_qwt_math_m_l_text_engine__inherit__graph.png" border="0" usemap="#_qwt_math_m_l_text_engine__inherit__map" alt="Inheritance graph"></center>
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<center><font size="2">[<a href="graph_legend.html">legend</a>]</font></center>Collaboration diagram for QwtMathMLTextEngine:<p><center><img src="class_qwt_math_m_l_text_engine__coll__graph.png" border="0" usemap="#_qwt_math_m_l_text_engine__coll__map" alt="Collaboration graph"></center>
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<center><font size="2">[<a href="graph_legend.html">legend</a>]</font></center><a href="class_qwt_math_m_l_text_engine-members.html">List of all members.</a><hr><a name="_details"></a><h2>Detailed Description</h2>
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Text Engine for the MathML renderer of the Qt solutions package.
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The Qt Solution package includes a renderer for MathML <a href="http://www.trolltech.com/products/qt/addon/solutions/catalog/4/Widgets/qtmmlwidget">http://www.trolltech.com/products/qt/addon/solutions/catalog/4/Widgets/qtmmlwidget</a> that is available for owners of a commercial Qt license. You need a version >= 2.1, that is only available for Qt4.<p>
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To enable MathML support the following code needs to be added to the application: <div class="fragment"><pre class="fragment">#include <qwt_mathml_text_engine.h>
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QwtText::setTextEngine(QwtText::MathMLText, new QwtMathMLTextEngine());
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<dl compact><dt><b>See also:</b></dt><dd><a class="el" href="class_qwt_text_engine.html">QwtTextEngine</a>, <a class="el" href="class_qwt_text.html#ef6a1e71b1feba3116ce69f6c9de70ad">QwtText::setTextEngine</a> </dd></dl>
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<dl compact><dt><b>Warning:</b></dt><dd>Unfortunately the MathML renderer doesn't support rotating of texts. </dd></dl>
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Definition at line <a class="el" href="qwt__mathml__text__engine_8h-source.html#l00039">39</a> of file <a class="el" href="qwt__mathml__text__engine_8h-source.html">qwt_mathml_text_engine.h</a>.<table border="0" cellpadding="0" cellspacing="0">
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<tr><td colspan="2"><br><h2>Public Member Functions</h2></td></tr>
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<tr><td class="memItemLeft" nowrap align="right" valign="top"> </td><td class="memItemRight" valign="bottom"><a class="el" href="class_qwt_math_m_l_text_engine.html#f88b085974808e0497d120044672f721">QwtMathMLTextEngine</a> ()</td></tr>
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<tr><td class="memItemLeft" nowrap align="right" valign="top">virtual </td><td class="memItemRight" valign="bottom"><a class="el" href="class_qwt_math_m_l_text_engine.html#864d4265a7621e7389b21d419e6503ff">~QwtMathMLTextEngine</a> ()</td></tr>
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<tr><td class="memItemLeft" nowrap align="right" valign="top">virtual int </td><td class="memItemRight" valign="bottom"><a class="el" href="class_qwt_math_m_l_text_engine.html#2af5e9efb10eee9c28cce50699cdfdab">heightForWidth</a> (const QFont &font, int flags, const QString &text, int width) const </td></tr>
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<tr><td class="memItemLeft" nowrap align="right" valign="top">virtual QSize </td><td class="memItemRight" valign="bottom"><a class="el" href="class_qwt_math_m_l_text_engine.html#ecb16b442a1ff15418dc31860e11c27b">textSize</a> (const QFont &font, int flags, const QString &text) const </td></tr>
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<tr><td class="memItemLeft" nowrap align="right" valign="top">virtual void </td><td class="memItemRight" valign="bottom"><a class="el" href="class_qwt_math_m_l_text_engine.html#476c19642bf2c69a1abf0021547a1d7e">draw</a> (QPainter *painter, const QRect &rect, int flags, const QString &text) const </td></tr>
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<tr><td class="memItemLeft" nowrap align="right" valign="top">virtual bool </td><td class="memItemRight" valign="bottom"><a class="el" href="class_qwt_math_m_l_text_engine.html#59ca5842c32fd12cfd2aeeef5c985600">mightRender</a> (const QString &) const </td></tr>
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<tr><td class="memItemLeft" nowrap align="right" valign="top">virtual void </td><td class="memItemRight" valign="bottom"><a class="el" href="class_qwt_math_m_l_text_engine.html#21ae25c70e4ff79cde60072e4bd75a29">textMargins</a> (const QFont &, const QString &, int &left, int &right, int &top, int &bottom) const </td></tr>
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<hr><h2>Constructor & Destructor Documentation</h2>
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<a class="anchor" name="f88b085974808e0497d120044672f721"></a><!-- doxytag: member="QwtMathMLTextEngine::QwtMathMLTextEngine" ref="f88b085974808e0497d120044672f721" args="()" --><p>
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<table class="mdTable" cellpadding="2" cellspacing="0">
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<table cellpadding="0" cellspacing="0" border="0">
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<td class="md" nowrap valign="top">QwtMathMLTextEngine::QwtMathMLTextEngine </td>
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<td class="md" valign="top">( </td>
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<td class="mdname1" valign="top" nowrap> </td>
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<td class="md" valign="top"> ) </td>
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<td class="md" nowrap></td>
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<table cellspacing="5" cellpadding="0" border="0">
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Definition at line <a class="el" href="qwt__mathml__text__engine_8cpp-source.html#l00022">22</a> of file <a class="el" href="qwt__mathml__text__engine_8cpp-source.html">qwt_mathml_text_engine.cpp</a>. </td>
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<a class="anchor" name="864d4265a7621e7389b21d419e6503ff"></a><!-- doxytag: member="QwtMathMLTextEngine::~QwtMathMLTextEngine" ref="864d4265a7621e7389b21d419e6503ff" args="()" --><p>
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<table class="mdTable" cellpadding="2" cellspacing="0">
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<table cellpadding="0" cellspacing="0" border="0">
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<td class="md" nowrap valign="top">QwtMathMLTextEngine::~QwtMathMLTextEngine </td>
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<td class="md" valign="top">( </td>
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<td class="mdname1" valign="top" nowrap> </td>
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<td class="md" valign="top"> ) </td>
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<td class="md" nowrap><code> [virtual]</code></td>
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<table cellspacing="5" cellpadding="0" border="0">
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Definition at line <a class="el" href="qwt__mathml__text__engine_8cpp-source.html#l00027">27</a> of file <a class="el" href="qwt__mathml__text__engine_8cpp-source.html">qwt_mathml_text_engine.cpp</a>. </td>
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<hr><h2>Member Function Documentation</h2>
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<a class="anchor" name="476c19642bf2c69a1abf0021547a1d7e"></a><!-- doxytag: member="QwtMathMLTextEngine::draw" ref="476c19642bf2c69a1abf0021547a1d7e" args="(QPainter *painter, const QRect &rect, int flags, const QString &text) const " --><p>
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<table class="mdTable" cellpadding="2" cellspacing="0">
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<table cellpadding="0" cellspacing="0" border="0">
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<td class="md" nowrap valign="top">void QwtMathMLTextEngine::draw </td>
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<td class="md" valign="top">( </td>
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<td class="md" nowrap valign="top">QPainter * </td>
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<td class="mdname" nowrap> <em>painter</em>, </td>
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<td class="md" nowrap align="right"></td>
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<td class="md" nowrap>const QRect & </td>
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<td class="mdname" nowrap> <em>rect</em>, </td>
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<td class="md" nowrap align="right"></td>
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<td class="md" nowrap>int </td>
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<td class="mdname" nowrap> <em>flags</em>, </td>
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<td class="md" nowrap align="right"></td>
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<td class="md" nowrap>const QString & </td>
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<td class="mdname" nowrap> <em>text</em></td>
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<td class="md">) </td>
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<td class="md" colspan="2"> const<code> [virtual]</code></td>
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<table cellspacing="5" cellpadding="0" border="0">
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Draw the text in a clipping rectangle<p>
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<dl compact><dt><b>Parameters:</b></dt><dd>
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<table border="0" cellspacing="2" cellpadding="0">
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<tr><td valign="top"></td><td valign="top"><em>painter</em> </td><td>Painter </td></tr>
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<tr><td valign="top"></td><td valign="top"><em>rect</em> </td><td>Clipping rectangle </td></tr>
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<tr><td valign="top"></td><td valign="top"><em>flags</em> </td><td>Bitwise OR of the flags like in for QPainter::drawText </td></tr>
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<tr><td valign="top"></td><td valign="top"><em>text</em> </td><td>Text to be rendered </td></tr>
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Implements <a class="el" href="class_qwt_text_engine.html#cf750dd01aa35f5c9fc836460c30d663">QwtTextEngine</a>.
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Definition at line <a class="el" href="qwt__mathml__text__engine_8cpp-source.html#l00097">97</a> of file <a class="el" href="qwt__mathml__text__engine_8cpp-source.html">qwt_mathml_text_engine.cpp</a>. </td>
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<a class="anchor" name="2af5e9efb10eee9c28cce50699cdfdab"></a><!-- doxytag: member="QwtMathMLTextEngine::heightForWidth" ref="2af5e9efb10eee9c28cce50699cdfdab" args="(const QFont &font, int flags, const QString &text, int width) const " --><p>
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<table class="mdTable" cellpadding="2" cellspacing="0">
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<table cellpadding="0" cellspacing="0" border="0">
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<td class="md" nowrap valign="top">int QwtMathMLTextEngine::heightForWidth </td>
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<td class="md" valign="top">( </td>
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<td class="md" nowrap valign="top">const QFont & </td>
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<td class="mdname" nowrap> <em>font</em>, </td>
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<td class="md" nowrap align="right"></td>
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<td class="md" nowrap>int </td>
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<td class="mdname" nowrap> <em>flags</em>, </td>
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<td class="md" nowrap align="right"></td>
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<td class="md" nowrap>const QString & </td>
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<td class="mdname" nowrap> <em>text</em>, </td>
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<td class="md" nowrap align="right"></td>
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<td class="md" nowrap>int </td>
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<td class="mdname" nowrap> <em>width</em></td>
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<td class="md">) </td>
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<td class="md" colspan="2"> const<code> [virtual]</code></td>
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<table cellspacing="5" cellpadding="0" border="0">
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Find the height for a given width<p>
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<dl compact><dt><b>Parameters:</b></dt><dd>
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<table border="0" cellspacing="2" cellpadding="0">
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<tr><td valign="top"></td><td valign="top"><em>font</em> </td><td>Font of the text </td></tr>
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<tr><td valign="top"></td><td valign="top"><em>flags</em> </td><td>Bitwise OR of the flags used like in QPainter::drawText </td></tr>
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<tr><td valign="top"></td><td valign="top"><em>text</em> </td><td>Text to be rendered </td></tr>
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<tr><td valign="top"></td><td valign="top"><em>width</em> </td><td>Width</td></tr>
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<dl compact><dt><b>Returns:</b></dt><dd>Calculated height </dd></dl>
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Implements <a class="el" href="class_qwt_text_engine.html#ac1112e5b1005d020d596dd174bbabf6">QwtTextEngine</a>.
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Definition at line <a class="el" href="qwt__mathml__text__engine_8cpp-source.html#l00041">41</a> of file <a class="el" href="qwt__mathml__text__engine_8cpp-source.html">qwt_mathml_text_engine.cpp</a>.
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References <a class="el" href="qwt__mathml__text__engine_8cpp-source.html#l00056">textSize()</a>. </td>
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<a class="anchor" name="59ca5842c32fd12cfd2aeeef5c985600"></a><!-- doxytag: member="QwtMathMLTextEngine::mightRender" ref="59ca5842c32fd12cfd2aeeef5c985600" args="(const QString &) const " --><p>
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<table class="mdTable" cellpadding="2" cellspacing="0">
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<table cellpadding="0" cellspacing="0" border="0">
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<td class="md" nowrap valign="top">bool QwtMathMLTextEngine::mightRender </td>
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<td class="md" valign="top">( </td>
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<td class="md" nowrap valign="top">const QString & </td>
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<td class="mdname1" valign="top" nowrap> <em>text</em> </td>
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<td class="md" valign="top"> ) </td>
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<td class="md" nowrap> const<code> [virtual]</code></td>
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<table cellspacing="5" cellpadding="0" border="0">
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Test if a string can be rendered by <a class="el" href="class_qwt_math_m_l_text_engine.html">QwtMathMLTextEngine</a><p>
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<dl compact><dt><b>Parameters:</b></dt><dd>
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<table border="0" cellspacing="2" cellpadding="0">
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<tr><td valign="top"></td><td valign="top"><em>text</em> </td><td>Text to be tested </td></tr>
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<dl compact><dt><b>Returns:</b></dt><dd>true, if text begins with "<math>". </dd></dl>
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Implements <a class="el" href="class_qwt_text_engine.html#98316f2f6f4f50216ceffbe9babe2901">QwtTextEngine</a>.
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Definition at line <a class="el" href="qwt__mathml__text__engine_8cpp-source.html#l00131">131</a> of file <a class="el" href="qwt__mathml__text__engine_8cpp-source.html">qwt_mathml_text_engine.cpp</a>. </td>
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<a class="anchor" name="21ae25c70e4ff79cde60072e4bd75a29"></a><!-- doxytag: member="QwtMathMLTextEngine::textMargins" ref="21ae25c70e4ff79cde60072e4bd75a29" args="(const QFont &, const QString &, int &left, int &right, int &top, int &bottom) const " --><p>
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<table class="mdTable" cellpadding="2" cellspacing="0">
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<table cellpadding="0" cellspacing="0" border="0">
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<td class="md" nowrap valign="top">void QwtMathMLTextEngine::textMargins </td>
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<td class="md" valign="top">( </td>
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<td class="md" nowrap valign="top">const QFont & </td>
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<td class="mdname" nowrap>, </td>
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<td class="md" nowrap align="right"></td>
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<td class="md" nowrap>const QString & </td>
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<td class="mdname" nowrap>, </td>
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<td class="md" nowrap align="right"></td>
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<td class="md" nowrap>int & </td>
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<td class="mdname" nowrap> <em>left</em>, </td>
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<td class="md" nowrap align="right"></td>
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<td class="md" nowrap>int & </td>
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<td class="mdname" nowrap> <em>right</em>, </td>
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<td class="md" nowrap align="right"></td>
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<td class="md" nowrap>int & </td>
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<td class="mdname" nowrap> <em>top</em>, </td>
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<td class="md" nowrap align="right"></td>
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<td class="md" nowrap>int & </td>
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<td class="mdname" nowrap> <em>bottom</em></td>
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<td class="md">) </td>
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<td class="md" colspan="2"> const<code> [virtual]</code></td>
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<table cellspacing="5" cellpadding="0" border="0">
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Return margins around the texts<p>
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<dl compact><dt><b>Parameters:</b></dt><dd>
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<table border="0" cellspacing="2" cellpadding="0">
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<tr><td valign="top"></td><td valign="top"><em>left</em> </td><td>Return 0 </td></tr>
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<tr><td valign="top"></td><td valign="top"><em>right</em> </td><td>Return 0 </td></tr>
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<tr><td valign="top"></td><td valign="top"><em>top</em> </td><td>Return 0 </td></tr>
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<tr><td valign="top"></td><td valign="top"><em>bottom</em> </td><td>Return 0 </td></tr>
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Implements <a class="el" href="class_qwt_text_engine.html#d84ebda640e65f23ebd758cd545a5b9a">QwtTextEngine</a>.
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Definition at line <a class="el" href="qwt__mathml__text__engine_8cpp-source.html#l00083">83</a> of file <a class="el" href="qwt__mathml__text__engine_8cpp-source.html">qwt_mathml_text_engine.cpp</a>. </td>
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<a class="anchor" name="ecb16b442a1ff15418dc31860e11c27b"></a><!-- doxytag: member="QwtMathMLTextEngine::textSize" ref="ecb16b442a1ff15418dc31860e11c27b" args="(const QFont &font, int flags, const QString &text) const " --><p>
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<table class="mdTable" cellpadding="2" cellspacing="0">
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<table cellpadding="0" cellspacing="0" border="0">
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<td class="md" nowrap valign="top">QSize QwtMathMLTextEngine::textSize </td>
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<td class="md" valign="top">( </td>
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<td class="md" nowrap valign="top">const QFont & </td>
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<td class="mdname" nowrap> <em>font</em>, </td>
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<td class="md" nowrap align="right"></td>
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<td class="md" nowrap>int </td>
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<td class="mdname" nowrap> <em>flags</em>, </td>
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<td class="md" nowrap align="right"></td>
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<td class="md" nowrap>const QString & </td>
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<td class="mdname" nowrap> <em>text</em></td>
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<td class="md">) </td>
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<td class="md" colspan="2"> const<code> [virtual]</code></td>
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<table cellspacing="5" cellpadding="0" border="0">
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Returns the size, that is needed to render text<p>
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<dl compact><dt><b>Parameters:</b></dt><dd>
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<table border="0" cellspacing="2" cellpadding="0">
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<tr><td valign="top"></td><td valign="top"><em>font</em> </td><td>Font of the text </td></tr>
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<tr><td valign="top"></td><td valign="top"><em>flags</em> </td><td>Bitwise OR of the flags used like in QPainter::drawText </td></tr>
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<tr><td valign="top"></td><td valign="top"><em>text</em> </td><td>Text to be rendered</td></tr>
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<dl compact><dt><b>Returns:</b></dt><dd>Caluclated size </dd></dl>
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Implements <a class="el" href="class_qwt_text_engine.html#73214e1778edf6eb870fc96bf9c5091e">QwtTextEngine</a>.
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Definition at line <a class="el" href="qwt__mathml__text__engine_8cpp-source.html#l00056">56</a> of file <a class="el" href="qwt__mathml__text__engine_8cpp-source.html">qwt_mathml_text_engine.cpp</a>.
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Referenced by <a class="el" href="qwt__mathml__text__engine_8cpp-source.html#l00041">heightForWidth()</a>. </td>
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<hr size="1"><address style="align: right;"><small>Generated on Mon Jun 11 07:42:16 2007 for Qwt User's Guide by
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