qt3-doc 3:3.3.8-b-8ubuntu3 / usr / share / qt3 / doc / html / chart-element-h.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
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