1 files changed, 84 insertions, 0 deletions
diff --git a/examples/chart/element.h b/examples/chart/element.h
new file mode 100644
index 0000000..f6b2b5b
--- /dev/null
+++ b/examples/chart/element.h
@@ -0,0 +1,84 @@
+#ifndef ELEMENT_H
+#define ELEMENT_H
+
+#include <qcolor.h>
+#include <qnamespace.h>
+#include <qstring.h>
+#include <qvaluevector.h>
+
+class Element;
+
+typedef QValueVector<Element> ElementVector;
+
+/*
+    Elements are valid if they have a value which is > EPSILON.
+*/
+const double EPSILON = 0.0000001; // Must be > 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 QString& label = QString::null,
+	     QColor labelColor = Qt::black ) {
+	init( value, valueColor, valuePattern, label, labelColor );
+	for ( int i = 0; i < MAX_PROPOINTS * 2; ++i )
+	    m_propoints[i] = NO_PROPORTION;
+    }
+    ~Element() {}
+
+    bool isValid() const { return m_value > EPSILON; }
+
+    double value() const { return m_value; }
+    QColor valueColor() const { return m_valueColor; }
+    int valuePattern() const { return m_valuePattern; }
+    QString label() const { return m_label; }
+    QColor 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 QString& label = QString::null,
+	      QColor labelColor = Qt::black ) {
+	init( value, valueColor, valuePattern, label, labelColor );
+    }
+    void setValue( double value ) { m_value = value; }
+    void setValueColor( QColor valueColor ) { m_valueColor = valueColor; }
+    void setValuePattern( int valuePattern );
+    void setLabel( const QString& label ) { m_label = label; }
+    void setLabelColor( QColor 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& e) const {
+	return ( !(e == *this) );
+    }
+#endif
+
+private:
+    void init( double value, QColor valueColor, int valuePattern,
+	       const QString& label, QColor labelColor );
+
+    double m_value;
+    QColor m_valueColor;
+    int m_valuePattern;
+    QString m_label;
+    QColor m_labelColor;
+    double m_propoints[2 * MAX_PROPOINTS];
+};
+
+
+QTextStream &operator<<( QTextStream&, const Element& );
+QTextStream &operator>>( QTextStream&, Element& );
+
+#endif