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127 lines
4.7 KiB
127 lines
4.7 KiB
14 years ago
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<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN">
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<!-- /home/espenr/tmp/qt-3.3.8-espenr-2499/qt-x11-free-3.3.8/doc/tutorial2.doc:2 -->
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<html>
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<head>
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<meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1">
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<title>chart/element.h Example File</title>
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<font color="#004faf">Home</font></a>
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<font color="#004faf">All Classes</font></a>
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<font color="#004faf">Functions</font></a>
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</td>
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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>
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<pre>#ifndef ELEMENT_H
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#define ELEMENT_H
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#include <<a href="qcolor-h.html">qcolor.h</a>>
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#include <<a href="qnamespace-h.html">qnamespace.h</a>>
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#include <<a href="qstring-h.html">qstring.h</a>>
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#include <<a href="qvaluevector-h.html">qvaluevector.h</a>>
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class Element;
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typedef QValueVector<Element> ElementVector;
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/*
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Elements are valid if they have a value which is > EPSILON.
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*/
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const double EPSILON = 0.0000001; // Must be > INVALID.
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class Element
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{
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public:
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enum { INVALID = -1 };
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enum { NO_PROPORTION = -1 };
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enum { MAX_PROPOINTS = 3 }; // One proportional point per chart type
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Element( double value = INVALID, QColor valueColor = Qt::gray,
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int valuePattern = Qt::SolidPattern,
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const <a href="qstring.html">QString</a>& label = QString::null,
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<a href="qcolor.html">QColor</a> labelColor = Qt::black ) {
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init( value, valueColor, valuePattern, label, labelColor );
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for ( int i = 0; i < MAX_PROPOINTS * 2; ++i )
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m_propoints[i] = NO_PROPORTION;
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}
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~Element() {}
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bool isValid() const { return m_value > EPSILON; }
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double value() const { return m_value; }
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<a href="qcolor.html">QColor</a> valueColor() const { return m_valueColor; }
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int valuePattern() const { return m_valuePattern; }
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<a href="qstring.html">QString</a> label() const { return m_label; }
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<a href="qcolor.html">QColor</a> labelColor() const { return m_labelColor; }
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double proX( int index ) const;
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double proY( int index ) const;
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void set( double value = INVALID, QColor valueColor = Qt::gray,
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int valuePattern = Qt::SolidPattern,
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const <a href="qstring.html">QString</a>& label = QString::null,
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<a href="qcolor.html">QColor</a> labelColor = Qt::black ) {
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init( value, valueColor, valuePattern, label, labelColor );
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}
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void setValue( double value ) { m_value = value; }
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void setValueColor( <a href="qcolor.html">QColor</a> valueColor ) { m_valueColor = valueColor; }
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void setValuePattern( int valuePattern );
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void setLabel( const <a href="qstring.html">QString</a>& label ) { m_label = label; }
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void setLabelColor( <a href="qcolor.html">QColor</a> labelColor ) { m_labelColor = labelColor; }
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void setProX( int index, double value );
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void setProY( int index, double value );
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#ifdef Q_FULL_TEMPLATE_INSTANTIATION
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// xlC 3.x workaround
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Q_DUMMY_COMPARISON_OPERATOR(Element)
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bool operator!=( const Element& e) const {
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return ( !(e == *this) );
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}
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#endif
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private:
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void init( double value, QColor valueColor, int valuePattern,
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const <a href="qstring.html">QString</a>& label, QColor labelColor );
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double m_value;
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<a href="qcolor.html">QColor</a> m_valueColor;
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int m_valuePattern;
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<a href="qstring.html">QString</a> m_label;
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<a href="qcolor.html">QColor</a> m_labelColor;
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double m_propoints[2 * MAX_PROPOINTS];
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};
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QTextStream &operator<<( <a href="qtextstream.html">QTextStream</a>&, const Element& );
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QTextStream &operator>>( <a href="qtextstream.html">QTextStream</a>&, Element& );
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#endif
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</pre><!-- eof -->
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<p><address><hr><div align=center>
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<table width=100% cellspacing=0 border=0><tr>
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<td>Copyright © 2007
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<a href="troll.html">Trolltech</a><td align=center><a href="trademarks.html">Trademarks</a>
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<td align=right><div align=right>Qt 3.3.8</div>
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</table></div></address></body>
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</html>
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