Add implicit conversions from math3d classes to QVariant

Existing QVariant-capable classes in QtGui like QColor, QPixmap,
etc have "operator QVariant()".  This change adds the same operators
for QVector2D, QVector3D, QVector4D, QQuaternion, and QMatrix4x4.

Reviewed-by: Justin McPherson

10 files changed, 58 insertions, 0 deletions

diff --git a/src/gui/math3d/qmatrix4x4.cpp b/src/gui/math3d/qmatrix4x4.cpp
index ed0802b..36ffcbe 100644
--- a/src/gui/math3d/qmatrix4x4.cpp
+++ b/src/gui/math3d/qmatrix4x4.cpp
@@ -41,6 +41,7 @@
 
 #include "qmatrix4x4.h"
 #include <QtCore/qmath.h>
+#include <QtCore/qvariant.h>
 #include <QtGui/qmatrix.h>
 #include <QtGui/qtransform.h>
 
@@ -1817,6 +1818,14 @@ void QMatrix4x4::inferSpecialType()
         flagBits = Scale;
 }
 
+/*!
+    Returns the matrix as a QVariant.
+*/
+QMatrix4x4::operator QVariant() const
+{
+    return QVariant(QVariant::Matrix4x4, this);
+}
+
 #ifndef QT_NO_DEBUG_STREAM
 
 QDebug operator<<(QDebug dbg, const QMatrix4x4 &m)
diff --git a/src/gui/math3d/qmatrix4x4.h b/src/gui/math3d/qmatrix4x4.h
index 04a4216..10e628b 100644
--- a/src/gui/math3d/qmatrix4x4.h
+++ b/src/gui/math3d/qmatrix4x4.h
@@ -58,6 +58,7 @@ QT_MODULE(Gui)
 
 class QMatrix;
 class QTransform;
+class QVariant;
 
 class Q_GUI_EXPORT QMatrix4x4
 {
@@ -182,6 +183,8 @@ public:
 
     void inferSpecialType();
 
+    operator QVariant() const;
+
 #ifndef QT_NO_DEBUG_STREAM
     friend Q_GUI_EXPORT QDebug operator<<(QDebug dbg, const QMatrix4x4 &m);
 #endif
diff --git a/src/gui/math3d/qquaternion.cpp b/src/gui/math3d/qquaternion.cpp
index b2c598f..f279388 100644
--- a/src/gui/math3d/qquaternion.cpp
+++ b/src/gui/math3d/qquaternion.cpp
@@ -41,6 +41,7 @@
 
 #include "qquaternion.h"
 #include <QtCore/qmath.h>
+#include <QtCore/qvariant.h>
 #include <QtCore/qdebug.h>
 
 QT_BEGIN_NAMESPACE
@@ -560,6 +561,14 @@ QQuaternion QQuaternion::nlerp
     return (q1 * (1.0f - t) + q2b * t).normalized();
 }
 
+/*!
+    Returns the quaternion as a QVariant.
+*/
+QQuaternion::operator QVariant() const
+{
+    return QVariant(QVariant::Quaternion, this);
+}
+
 #ifndef QT_NO_DEBUG_STREAM
 
 QDebug operator<<(QDebug dbg, const QQuaternion &q)
diff --git a/src/gui/math3d/qquaternion.h b/src/gui/math3d/qquaternion.h
index a2fb29f..af60b61 100644
--- a/src/gui/math3d/qquaternion.h
+++ b/src/gui/math3d/qquaternion.h
@@ -54,6 +54,7 @@ QT_MODULE(Gui)
 #ifndef QT_NO_QUATERNION
 
 class QMatrix4x4;
+class QVariant;
 
 class Q_GUI_EXPORT QQuaternion
 {
@@ -118,6 +119,8 @@ public:
     QVector4D toVector4D() const;
 #endif
 
+    operator QVariant() const;
+
 #ifndef QT_NO_VECTOR3D
     static QQuaternion fromAxisAndAngle(const QVector3D& axis, qreal angle);
 #endif
diff --git a/src/gui/math3d/qvector2d.cpp b/src/gui/math3d/qvector2d.cpp
index 1662020..35c86a1 100644
--- a/src/gui/math3d/qvector2d.cpp
+++ b/src/gui/math3d/qvector2d.cpp
@@ -43,6 +43,7 @@
 #include "qvector3d.h"
 #include "qvector4d.h"
 #include <QtCore/qdebug.h>
+#include <QtCore/qvariant.h>
 #include <QtCore/qmath.h>
 
 QT_BEGIN_NAMESPACE
@@ -402,6 +403,14 @@ QVector4D QVector2D::toVector4D() const
     \sa toPoint(), toVector3D()
 */
 
+/*!
+    Returns the 2D vector as a QVariant.
+*/
+QVector2D::operator QVariant() const
+{
+    return QVariant(QVariant::Vector2D, this);
+}
+
 #ifndef QT_NO_DEBUG_STREAM
 
 QDebug operator<<(QDebug dbg, const QVector2D &vector)
diff --git a/src/gui/math3d/qvector2d.h b/src/gui/math3d/qvector2d.h
index 93052f6..d9727e2 100644
--- a/src/gui/math3d/qvector2d.h
+++ b/src/gui/math3d/qvector2d.h
@@ -53,6 +53,7 @@ QT_MODULE(Gui)
 
 class QVector3D;
 class QVector4D;
+class QVariant;
 
 #ifndef QT_NO_VECTOR2D
 
@@ -114,6 +115,8 @@ public:
     QPoint toPoint() const;
     QPointF toPointF() const;
 
+    operator QVariant() const;
+
 private:
     float xp, yp;
 
diff --git a/src/gui/math3d/qvector3d.cpp b/src/gui/math3d/qvector3d.cpp
index 0e3f4e1..5c96979 100644
--- a/src/gui/math3d/qvector3d.cpp
+++ b/src/gui/math3d/qvector3d.cpp
@@ -43,6 +43,7 @@
 #include "qvector2d.h"
 #include "qvector4d.h"
 #include <QtCore/qmath.h>
+#include <QtCore/qvariant.h>
 #include <QtCore/qdebug.h>
 
 QT_BEGIN_NAMESPACE
@@ -530,6 +531,14 @@ QVector4D QVector3D::toVector4D() const
 */
 
 /*!
+    Returns the 3D vector as a QVariant.
+*/
+QVector3D::operator QVariant() const
+{
+    return QVariant(QVariant::Vector3D, this);
+}
+
+/*!
     Returns the length of the vector from the origin.
 
     \sa lengthSquared(), normalized()
diff --git a/src/gui/math3d/qvector3d.h b/src/gui/math3d/qvector3d.h
index 36292d2..d1370fb 100644
--- a/src/gui/math3d/qvector3d.h
+++ b/src/gui/math3d/qvector3d.h
@@ -127,6 +127,8 @@ public:
     QPoint toPoint() const;
     QPointF toPointF() const;
 
+    operator QVariant() const;
+
 private:
     float xp, yp, zp;
 
diff --git a/src/gui/math3d/qvector4d.cpp b/src/gui/math3d/qvector4d.cpp
index a2efff7..11eb4c4 100644
--- a/src/gui/math3d/qvector4d.cpp
+++ b/src/gui/math3d/qvector4d.cpp
@@ -43,6 +43,7 @@
 #include "qvector3d.h"
 #include "qvector2d.h"
 #include <QtCore/qdebug.h>
+#include <QtCore/qvariant.h>
 #include <QtCore/qmath.h>
 
 QT_BEGIN_NAMESPACE
@@ -500,6 +501,14 @@ QVector3D QVector4D::toVector3DAffine() const
     \sa toPoint(), toVector2D()
 */
 
+/*!
+    Returns the 4D vector as a QVariant.
+*/
+QVector4D::operator QVariant() const
+{
+    return QVariant(QVariant::Vector4D, this);
+}
+
 #ifndef QT_NO_DEBUG_STREAM
 
 QDebug operator<<(QDebug dbg, const QVector4D &vector)
diff --git a/src/gui/math3d/qvector4d.h b/src/gui/math3d/qvector4d.h
index 42db45b..69ccd30 100644
--- a/src/gui/math3d/qvector4d.h
+++ b/src/gui/math3d/qvector4d.h
@@ -124,6 +124,8 @@ public:
     QPoint toPoint() const;
     QPointF toPointF() const;
 
+    operator QVariant() const;
+
 private:
     float xp, yp, zp, wp;