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<title>chart/element.cpp Example File</title>
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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.cpp Example File</h1>
<pre>#include "element.h"
#include <<a href="qstringlist-h.html">qstringlist.h</a>>
#include <<a href="qtextstream-h.html">qtextstream.h</a>>
const char FIELD_SEP = ':';
const char PROPOINT_SEP = ';';
const char XY_SEP = ',';
void Element::init( double value, QColor valueColor, int valuePattern,
const <a href="qstring.html">QString</a>& label, QColor labelColor )
{
m_value = value;
m_valueColor = valueColor;
if ( valuePattern < Qt::SolidPattern || valuePattern > Qt::DiagCrossPattern )
valuePattern = Qt::SolidPattern;
m_valuePattern = valuePattern;
m_label = label;
m_labelColor = labelColor;
}
void Element::setValuePattern( int valuePattern )
{
if ( valuePattern < Qt::SolidPattern || valuePattern > Qt::DiagCrossPattern )
valuePattern = Qt::SolidPattern;
m_valuePattern = valuePattern;
}
double Element::proX( int index ) const
{
<a href="qapplication.html#Q_ASSERT">Q_ASSERT</a>(index >= 0 && index < MAX_PROPOINTS);
return m_propoints[2 * index];
}
double Element::proY( int index ) const
{
<a href="qapplication.html#Q_ASSERT">Q_ASSERT</a>(index >= 0 && index < MAX_PROPOINTS);
return m_propoints[(2 * index) + 1];
}
void Element::setProX( int index, double value )
{
<a href="qapplication.html#Q_ASSERT">Q_ASSERT</a>(index >= 0 && index < MAX_PROPOINTS);
m_propoints[2 * index] = value;
}
void Element::setProY( int index, double value )
{
<a href="qapplication.html#Q_ASSERT">Q_ASSERT</a>(index >= 0 && index < MAX_PROPOINTS);
m_propoints[(2 * index) + 1] = value;
}
QTextStream &operator<<( <a href="qtextstream.html">QTextStream</a> &s, const Element &element )
{
s << element.value() << FIELD_SEP
<< element.valueColor().name() << FIELD_SEP
<< element.valuePattern() << FIELD_SEP
<< element.labelColor().name() << FIELD_SEP;
for ( int i = 0; i < Element::MAX_PROPOINTS; ++i ) {
s << element.proX( i ) << XY_SEP << element.proY( i );
s << ( i == Element::MAX_PROPOINTS - 1 ? FIELD_SEP : PROPOINT_SEP );
}
s << element.label() << '\n';
return s;
}
QTextStream &operator>>( <a href="qtextstream.html">QTextStream</a> &s, Element &element )
{
<a href="qstring.html">QString</a> data = s.<a href="qtextstream.html#readLine">readLine</a>();
element.setValue( Element::INVALID );
int errors = 0;
bool ok;
<a href="qstringlist.html">QStringList</a> fields = QStringList::<a href="qstringlist.html#split">split</a>( FIELD_SEP, data );
if ( fields.<a href="qvaluelist.html#count">count</a>() >= 4 ) {
double value = fields[0].toDouble( &ok );
if ( !ok )
errors++;
<a href="qcolor.html">QColor</a> valueColor = QColor( fields[1] );
if ( !valueColor.<a href="qcolor.html#isValid">isValid</a>() )
errors++;
int valuePattern = fields[2].toInt( &ok );
if ( !ok )
errors++;
<a href="qcolor.html">QColor</a> labelColor = QColor( fields[3] );
if ( !labelColor.<a href="qcolor.html#isValid">isValid</a>() )
errors++;
<a href="qstringlist.html">QStringList</a> propoints = QStringList::<a href="qstringlist.html#split">split</a>( PROPOINT_SEP, fields[4] );
<a href="qstring.html">QString</a> label = data.<a href="qstring.html#section">section</a>( FIELD_SEP, 5 );
if ( !errors ) {
element.set( value, valueColor, valuePattern, label, labelColor );
int i = 0;
for ( QStringList::iterator point = propoints.<a href="qvaluelist.html#begin">begin</a>();
i < Element::MAX_PROPOINTS && point != propoints.<a href="qvaluelist.html#end">end</a>();
++i, ++point ) {
errors = 0;
<a href="qstringlist.html">QStringList</a> xy = QStringList::<a href="qstringlist.html#split">split</a>( XY_SEP, *point );
double x = xy[0].toDouble( &ok );
if ( !ok || x <= 0.0 || x >= 1.0 )
errors++;
double y = xy[1].toDouble( &ok );
if ( !ok || y <= 0.0 || y >= 1.0 )
errors++;
if ( errors )
x = y = Element::NO_PROPORTION;
element.setProX( i, x );
element.setProY( i, y );
}
}
}
return s;
}
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