source: trunk/doc/html/chart-element-h.html

Last change on this file was 190, checked in by rudi, 14 years ago

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32<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>
33
34
35<pre>#ifndef ELEMENT_H
36#define ELEMENT_H
37
38#include &lt;<a href="qcolor-h.html">qcolor.h</a>&gt;
39#include &lt;<a href="qnamespace-h.html">qnamespace.h</a>&gt;
40#include &lt;<a href="qstring-h.html">qstring.h</a>&gt;
41#include &lt;<a href="qvaluevector-h.html">qvaluevector.h</a>&gt;
42
43class Element;
44
45typedef QValueVector&lt;Element&gt; ElementVector;
46
47/*
48 Elements are valid if they have a value which is &gt; EPSILON.
49*/
50const double EPSILON = 0.0000001; // Must be &gt; INVALID.
51
52
53class Element
54{
55public:
56 enum { INVALID = -1 };
57 enum { NO_PROPORTION = -1 };
58 enum { MAX_PROPOINTS = 3 }; // One proportional point per chart type
59
60 Element( double value = INVALID, QColor valueColor = Qt::gray,
61 int valuePattern = Qt::SolidPattern,
62 const <a href="qstring.html">QString</a>&amp; label = QString::null,
63 <a href="qcolor.html">QColor</a> labelColor = Qt::black ) {
64 init( value, valueColor, valuePattern, label, labelColor );
65 for ( int i = 0; i &lt; MAX_PROPOINTS * 2; ++i )
66 m_propoints[i] = NO_PROPORTION;
67 }
68 ~Element() {}
69
70 bool isValid() const { return m_value &gt; EPSILON; }
71
72 double value() const { return m_value; }
73 <a href="qcolor.html">QColor</a> valueColor() const { return m_valueColor; }
74 int valuePattern() const { return m_valuePattern; }
75 <a href="qstring.html">QString</a> label() const { return m_label; }
76 <a href="qcolor.html">QColor</a> labelColor() const { return m_labelColor; }
77 double proX( int index ) const;
78 double proY( int index ) const;
79
80 void set( double value = INVALID, QColor valueColor = Qt::gray,
81 int valuePattern = Qt::SolidPattern,
82 const <a href="qstring.html">QString</a>&amp; label = QString::null,
83 <a href="qcolor.html">QColor</a> labelColor = Qt::black ) {
84 init( value, valueColor, valuePattern, label, labelColor );
85 }
86 void setValue( double value ) { m_value = value; }
87 void setValueColor( <a href="qcolor.html">QColor</a> valueColor ) { m_valueColor = valueColor; }
88 void setValuePattern( int valuePattern );
89 void setLabel( const <a href="qstring.html">QString</a>&amp; label ) { m_label = label; }
90 void setLabelColor( <a href="qcolor.html">QColor</a> labelColor ) { m_labelColor = labelColor; }
91 void setProX( int index, double value );
92 void setProY( int index, double value );
93
94#ifdef Q_FULL_TEMPLATE_INSTANTIATION
95 // xlC 3.x workaround
96 Q_DUMMY_COMPARISON_OPERATOR(Element)
97 bool operator!=( const Element&amp; e) const {
98 return ( !(e == *this) );
99 }
100#endif
101
102private:
103 void init( double value, QColor valueColor, int valuePattern,
104 const <a href="qstring.html">QString</a>&amp; label, QColor labelColor );
105
106 double m_value;
107 <a href="qcolor.html">QColor</a> m_valueColor;
108 int m_valuePattern;
109 <a href="qstring.html">QString</a> m_label;
110 <a href="qcolor.html">QColor</a> m_labelColor;
111 double m_propoints[2 * MAX_PROPOINTS];
112};
113
114
115QTextStream &amp;operator&lt;&lt;( <a href="qtextstream.html">QTextStream</a>&amp;, const Element&amp; );
116QTextStream &amp;operator&gt;&gt;( <a href="qtextstream.html">QTextStream</a>&amp;, Element&amp; );
117
118#endif
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123<a href="troll.html">Trolltech</a><td align=center><a href="trademarks.html">Trademarks</a>
124<td align=right><div align=right>Qt 3.3.8</div>
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