| [190] | 1 | <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN">
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| 6 | <title>chart/element.cpp Example File</title>
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| 20 | <font color="#004faf">Home</font></a>
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| 22 | <font color="#004faf">All Classes</font></a>
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| 24 | <font color="#004faf">Main Classes</font></a>
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| 26 | <font color="#004faf">Annotated</font></a>
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| 28 | <font color="#004faf">Grouped Classes</font></a>
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| 30 | <font color="#004faf">Functions</font></a>
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| 31 | </td>
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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.cpp Example File</h1>
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| 33 |
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| 34 |
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| 35 | <pre>#include "element.h"
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| 36 |
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| 37 | #include <<a href="qstringlist-h.html">qstringlist.h</a>>
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| 38 | #include <<a href="qtextstream-h.html">qtextstream.h</a>>
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| 39 |
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| 40 | const char FIELD_SEP = ':';
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| 41 | const char PROPOINT_SEP = ';';
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| 42 | const char XY_SEP = ',';
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| 43 |
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| 44 |
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| 45 | void Element::init( double value, QColor valueColor, int valuePattern,
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| 46 | const <a href="qstring.html">QString</a>& label, QColor labelColor )
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| 47 | {
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| 48 | m_value = value;
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| 49 | m_valueColor = valueColor;
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| 50 | if ( valuePattern < Qt::SolidPattern || valuePattern > Qt::DiagCrossPattern )
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| 51 | valuePattern = Qt::SolidPattern;
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| 52 | m_valuePattern = valuePattern;
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| 53 | m_label = label;
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| 54 | m_labelColor = labelColor;
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| 55 | }
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| 56 |
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| 57 |
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| 58 | void Element::setValuePattern( int valuePattern )
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| 59 | {
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| 60 | if ( valuePattern < Qt::SolidPattern || valuePattern > Qt::DiagCrossPattern )
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| 61 | valuePattern = Qt::SolidPattern;
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| 62 | m_valuePattern = valuePattern;
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| 63 | }
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| 64 |
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| 65 |
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| 66 | double Element::proX( int index ) const
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| 67 | {
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| 68 | <a href="qapplication.html#Q_ASSERT">Q_ASSERT</a>(index >= 0 && index < MAX_PROPOINTS);
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| 69 | return m_propoints[2 * index];
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| 70 | }
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| 71 |
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| 72 |
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| 73 | double Element::proY( int index ) const
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| 74 | {
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| 75 | <a href="qapplication.html#Q_ASSERT">Q_ASSERT</a>(index >= 0 && index < MAX_PROPOINTS);
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| 76 | return m_propoints[(2 * index) + 1];
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| 77 | }
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| 78 |
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| 79 |
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| 80 | void Element::setProX( int index, double value )
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| 81 | {
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| 82 | <a href="qapplication.html#Q_ASSERT">Q_ASSERT</a>(index >= 0 && index < MAX_PROPOINTS);
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| 83 | m_propoints[2 * index] = value;
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| 84 | }
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| 85 |
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| 86 |
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| 87 | void Element::setProY( int index, double value )
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| 88 | {
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| 89 | <a href="qapplication.html#Q_ASSERT">Q_ASSERT</a>(index >= 0 && index < MAX_PROPOINTS);
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| 90 | m_propoints[(2 * index) + 1] = value;
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| 91 | }
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| 92 |
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| 93 |
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| 94 | QTextStream &operator<<( <a href="qtextstream.html">QTextStream</a> &s, const Element &element )
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| 95 | {
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| 96 | s << element.value() << FIELD_SEP
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| 97 | << element.valueColor().name() << FIELD_SEP
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| 98 | << element.valuePattern() << FIELD_SEP
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| 99 | << element.labelColor().name() << FIELD_SEP;
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| 100 |
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| 101 | for ( int i = 0; i < Element::MAX_PROPOINTS; ++i ) {
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| 102 | s << element.proX( i ) << XY_SEP << element.proY( i );
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| 103 | s << ( i == Element::MAX_PROPOINTS - 1 ? FIELD_SEP : PROPOINT_SEP );
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| 104 | }
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| 105 |
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| 106 | s << element.label() << '\n';
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| 107 |
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| 108 | return s;
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| 109 | }
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| 110 |
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| 111 |
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| 112 | QTextStream &operator>>( <a href="qtextstream.html">QTextStream</a> &s, Element &element )
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| 113 | {
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| 114 | <a href="qstring.html">QString</a> data = s.<a href="qtextstream.html#readLine">readLine</a>();
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| 115 | element.setValue( Element::INVALID );
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| 116 |
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| 117 | int errors = 0;
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| 118 | bool ok;
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| 119 |
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| 120 | <a href="qstringlist.html">QStringList</a> fields = QStringList::<a href="qstringlist.html#split">split</a>( FIELD_SEP, data );
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| 121 | if ( fields.<a href="qvaluelist.html#count">count</a>() >= 4 ) {
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| 122 | double value = fields[0].toDouble( &ok );
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| 123 | if ( !ok )
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| 124 | errors++;
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| 125 | <a href="qcolor.html">QColor</a> valueColor = QColor( fields[1] );
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| 126 | if ( !valueColor.<a href="qcolor.html#isValid">isValid</a>() )
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| 127 | errors++;
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| 128 | int valuePattern = fields[2].toInt( &ok );
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| 129 | if ( !ok )
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| 130 | errors++;
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| 131 | <a href="qcolor.html">QColor</a> labelColor = QColor( fields[3] );
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| 132 | if ( !labelColor.<a href="qcolor.html#isValid">isValid</a>() )
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| 133 | errors++;
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| 134 | <a href="qstringlist.html">QStringList</a> propoints = QStringList::<a href="qstringlist.html#split">split</a>( PROPOINT_SEP, fields[4] );
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| 135 | <a href="qstring.html">QString</a> label = data.<a href="qstring.html#section">section</a>( FIELD_SEP, 5 );
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| 136 |
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| 137 | if ( !errors ) {
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| 138 | element.set( value, valueColor, valuePattern, label, labelColor );
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| 139 | int i = 0;
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| 140 | for ( QStringList::iterator point = propoints.<a href="qvaluelist.html#begin">begin</a>();
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| 141 | i < Element::MAX_PROPOINTS && point != propoints.<a href="qvaluelist.html#end">end</a>();
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| 142 | ++i, ++point ) {
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| 143 | errors = 0;
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| 144 | <a href="qstringlist.html">QStringList</a> xy = QStringList::<a href="qstringlist.html#split">split</a>( XY_SEP, *point );
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| 145 | double x = xy[0].toDouble( &ok );
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| 146 | if ( !ok || x <= 0.0 || x >= 1.0 )
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| 147 | errors++;
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| 148 | double y = xy[1].toDouble( &ok );
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| 149 | if ( !ok || y <= 0.0 || y >= 1.0 )
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| 150 | errors++;
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| 151 | if ( errors )
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| 152 | x = y = Element::NO_PROPORTION;
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| 153 | element.setProX( i, x );
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| 154 | element.setProY( i, y );
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| 155 | }
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| 156 | }
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| 157 | }
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| 158 |
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| 159 | return s;
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| 160 | }
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| 161 |
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| 162 | </pre><!-- eof -->
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| 163 | <p><address><hr><div align=center>
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| 164 | <table width=100% cellspacing=0 border=0><tr>
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| 165 | <td>Copyright © 2007
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| 166 | <a href="troll.html">Trolltech</a><td align=center><a href="trademarks.html">Trademarks</a>
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| 167 | <td align=right><div align=right>Qt 3.3.8</div>
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| 168 | </table></div></address></body>
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| 169 | </html>
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