1 files changed, 127 insertions, 0 deletions
diff --git a/examples/chart/element.cpp b/examples/chart/element.cpp
new file mode 100644
index 0000000..c29b238
--- /dev/null
+++ b/examples/chart/element.cpp
@@ -0,0 +1,127 @@
+#include "element.h"
+
+#include <qstringlist.h>
+#include <qtextstream.h>
+
+const char FIELD_SEP = ':';
+const char PROPOINT_SEP = ';';
+const char XY_SEP = ',';
+
+
+void Element::init( double value, QColor valueColor, int valuePattern,
+		    const QString& 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
+{
+    Q_ASSERT(index >= 0 && index < MAX_PROPOINTS);
+    return m_propoints[2 * index];
+}
+
+
+double Element::proY( int index ) const
+{
+    Q_ASSERT(index >= 0 && index < MAX_PROPOINTS);
+    return m_propoints[(2 * index) + 1];
+}
+
+
+void Element::setProX( int index, double value )
+{
+    Q_ASSERT(index >= 0 && index < MAX_PROPOINTS);
+    m_propoints[2 * index] = value;
+}
+
+
+void Element::setProY( int index, double value )
+{
+    Q_ASSERT(index >= 0 && index < MAX_PROPOINTS);
+    m_propoints[(2 * index) + 1] = value;
+}
+
+
+QTextStream &operator<<( QTextStream &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>>( QTextStream &s, Element &element )
+{
+    QString data = s.readLine();
+    element.setValue( Element::INVALID );
+
+    int errors = 0;
+    bool ok;
+
+    QStringList fields = QStringList::split( FIELD_SEP, data );
+    if ( fields.count() >= 4 ) {
+	double value = fields[0].toDouble( &ok );
+	if ( !ok )
+	    errors++;
+	QColor valueColor = QColor( fields[1] );
+	if ( !valueColor.isValid() )
+	    errors++;
+	int valuePattern = fields[2].toInt( &ok );
+	if ( !ok )
+	    errors++;
+	QColor labelColor = QColor( fields[3] );
+	if ( !labelColor.isValid() )
+	    errors++;
+	QStringList propoints = QStringList::split( PROPOINT_SEP, fields[4] );
+	QString label = data.section( FIELD_SEP, 5 );
+
+	if ( !errors ) {
+	    element.set( value, valueColor, valuePattern, label, labelColor );
+	    int i = 0;
+	    for ( QStringList::iterator point = propoints.begin();
+		i < Element::MAX_PROPOINTS && point != propoints.end();
+		++i, ++point ) {
+		errors = 0;
+		QStringList xy = QStringList::split( 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;
+}
+