Added support for label shields

src/map/IMG/label.h

@@ -0,0 +1,74 @@
+#ifndef LABEL_H
+#define LABEL_H
+
+#include <QString>
+#include <QDebug>
+
+class Label {
+public:
+	class Shield
+	{
+	public:
+		enum Type {
+			None,
+			USInterstate,
+			USShield,
+			USRound,
+			Hbox,
+			Box,
+			Oval
+		};
+
+		Shield() : _type(None) {}
+		Shield(Type type, const QString &name) : _type(type), _text(name) {}
+
+		Type type() const {return _type;}
+		const QString &text() const {return _text;}
+		bool isValid() const {return _type > None && !_text.isEmpty();}
+
+		bool operator==(const Shield &other) const
+		  {return _type == other._type && _text == other._text;}
+
+	private:
+		Type _type;
+		QString _text;
+	};
+
+	Label() {}
+	Label(const QString &text, const Shield &shield = Shield())
+	  : _text(text), _shield(shield) {}
+
+	const Shield &shield() const {return _shield;}
+	const QString &text() const {return _text;}
+	bool isValid() const {return _shield.isValid() || !_text.isEmpty();}
+
+	void setText(const QString &text) {_text = text;}
+
+private:
+	QString _text;
+	Shield _shield;
+};
+
+inline uint qHash(const Label::Shield &shield)
+{
+	return qHash(shield.text()) ^ shield.type();
+}
+
+#ifndef QT_NO_DEBUG
+inline QDebug operator<<(QDebug dbg, const Label::Shield &shield)
+{
+	dbg.nospace() << "Shield(" << shield.type() << ", " << shield.text() << ")";
+	return dbg.space();
+}
+
+inline QDebug operator<<(QDebug dbg, const Label &label)
+{
+	dbg.nospace() << "Label(";
+	if (label.shield().isValid())
+		dbg << label.shield() << ", ";
+	dbg << label.text() << ")";
+	return dbg.space();
+}
+#endif // QT_NO_DEBUG
+
+#endif // LABEL_H