Started working on Qt types packers/unpackers

QColor implemented
cmake will fail with Qt4 for now

src/private/qt_types_p.cpp

@@ -0,0 +1,46 @@
+#include "qt_types_p.h"
+#include "pack_p.h"
+#include "unpack_p.h"
+
+#include <QDebug>
+
+#ifdef QT_GUI_LIB
+#include <QColor>
+#endif
+#define NO_QTGUI_WARNING "Library built without QtGui, hence some types are not available"
+
+bool MsgPackPrivate::register_qtype(QMetaType::Type q_type, quint8 msgpack_type)
+{
+	if (q_type == QMetaType::QColor) {
+		#ifdef QT_GUI_LIB
+		qRegisterMetaType<QColor>("QColor");
+    	MsgPackPrivate::register_packer((QMetaType::Type)qMetaTypeId<QColor>(), msgpack_type, pack_qcolor);
+    	MsgPackPrivate::register_unpacker(msgpack_type, unpack_qcolor);
+    	return true;
+    	#else
+    	qWarning() << NO_QTGUI_WARNING;
+    	return false;
+    	#endif //QT_GUI_LIB
+	}
+}
+
+#ifdef QT_GUI_LIB
+quint32 MsgPackPrivate::pack_qcolor(const QVariant &variant, QByteArray &data, bool write)
+{
+    if (write) {
+        QColor color = variant.value<QColor>();
+        data.resize(4);
+        data[0] = color.red();
+        data[1] = color.green();
+        data[2] = color.blue();
+        data[3] = color.alpha();
+    }
+    return 4; // 4 bytes: r,g,b,a
+}
+
+QVariant MsgPackPrivate::unpack_qcolor(const QByteArray &data)
+{
+    return QColor((quint8)data[0], (quint8)data[1],
+                  (quint8)data[2], (quint8)data[3]);
+}
+#endif //MsgPackPrivate

src/private/qt_types_p.h

@@ -0,0 +1,18 @@
+#ifndef QT_TYPES_P_H
+#define QT_TYPES_P_H
+
+#include <QVariant>
+#include <QByteArray>
+
+namespace MsgPackPrivate
+{
+bool register_qtype(QMetaType::Type q_type, quint8 msgpack_type);
+
+#ifdef QT_GUI_LIB
+quint32 pack_qcolor(const QVariant &variant, QByteArray &data, bool write);
+QVariant unpack_qcolor(const QByteArray &data);
+#endif //QT_GUI_LIB
+
+} // MsgPackPrivate
+
+#endif // QT_TYPES_P_H