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+<title>chart/element.h Example File</title>
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+ | <a href="classes.html">
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+<td align="right" valign="center"><img src="logo32.png" align="right" width="64" height="32" border="0"></td></tr></table><h1 align=center>chart/element.h Example File</h1>
+
+
+<pre>#ifndef ELEMENT_H
+#define ELEMENT_H
+
+#include &lt;<a href="qcolor-h.html">qcolor.h</a>&gt;
+#include &lt;<a href="qnamespace-h.html">qnamespace.h</a>&gt;
+#include &lt;<a href="qstring-h.html">qstring.h</a>&gt;
+#include &lt;<a href="qvaluevector-h.html">qvaluevector.h</a>&gt;
+
+class Element;
+
+typedef QValueVector&lt;Element&gt; ElementVector;
+
+/*
+ Elements are valid if they have a value which is &gt; EPSILON.
+*/
+const double EPSILON = 0.0000001; // Must be &gt; INVALID.
+
+
+class Element
+{
+public:
+ enum { INVALID = -1 };
+ enum { NO_PROPORTION = -1 };
+ enum { MAX_PROPOINTS = 3 }; // One proportional point per chart type
+
+ Element( double value = INVALID, QColor valueColor = Qt::gray,
+ int valuePattern = Qt::SolidPattern,
+ const <a href="qstring.html">QString</a>&amp; label = QString::null,
+ <a href="qcolor.html">QColor</a> labelColor = Qt::black ) {
+ init( value, valueColor, valuePattern, label, labelColor );
+ for ( int i = 0; i &lt; MAX_PROPOINTS * 2; ++i )
+ m_propoints[i] = NO_PROPORTION;
+ }
+ ~Element() {}
+
+ bool isValid() const { return m_value &gt; EPSILON; }
+
+ double value() const { return m_value; }
+ <a href="qcolor.html">QColor</a> valueColor() const { return m_valueColor; }
+ int valuePattern() const { return m_valuePattern; }
+ <a href="qstring.html">QString</a> label() const { return m_label; }
+ <a href="qcolor.html">QColor</a> labelColor() const { return m_labelColor; }
+ double proX( int index ) const;
+ double proY( int index ) const;
+
+ void set( double value = INVALID, QColor valueColor = Qt::gray,
+ int valuePattern = Qt::SolidPattern,
+ const <a href="qstring.html">QString</a>&amp; label = QString::null,
+ <a href="qcolor.html">QColor</a> labelColor = Qt::black ) {
+ init( value, valueColor, valuePattern, label, labelColor );
+ }
+ void setValue( double value ) { m_value = value; }
+ void setValueColor( <a href="qcolor.html">QColor</a> valueColor ) { m_valueColor = valueColor; }
+ void setValuePattern( int valuePattern );
+ void setLabel( const <a href="qstring.html">QString</a>&amp; label ) { m_label = label; }
+ void setLabelColor( <a href="qcolor.html">QColor</a> labelColor ) { m_labelColor = labelColor; }
+ void setProX( int index, double value );
+ void setProY( int index, double value );
+
+#ifdef Q_FULL_TEMPLATE_INSTANTIATION
+ // xlC 3.x workaround
+ Q_DUMMY_COMPARISON_OPERATOR(Element)
+ bool operator!=( const Element&amp; e) const {
+ return ( !(e == *this) );
+ }
+#endif
+
+private:
+ void init( double value, QColor valueColor, int valuePattern,
+ const <a href="qstring.html">QString</a>&amp; label, QColor labelColor );
+
+ double m_value;
+ <a href="qcolor.html">QColor</a> m_valueColor;
+ int m_valuePattern;
+ <a href="qstring.html">QString</a> m_label;
+ <a href="qcolor.html">QColor</a> m_labelColor;
+ double m_propoints[2 * MAX_PROPOINTS];
+};
+
+
+QTextStream &amp;operator&lt;&lt;( <a href="qtextstream.html">QTextStream</a>&amp;, const Element&amp; );
+QTextStream &amp;operator&gt;&gt;( <a href="qtextstream.html">QTextStream</a>&amp;, Element&amp; );
+
+#endif
+</pre><!-- eof -->
+<p><address><hr><div align=center>
+<table width=100% cellspacing=0 border=0><tr>
+<td>Copyright &copy; 2007
+<a href="troll.html">Trolltech</a><td align=center><a href="trademarks.html">Trademarks</a>
+<td align=right><div align=right>Qt 3.3.8</div>
+</table></div></address></body>
+</html>