Change default RotationAnimation direction.

Shortest as default too often led to unintuitive behavior. For example,
RotationAnimation { from: 0; to: 360 } will not animate at all. Numerical
gives the least surprising results.

3 files changed, 10 insertions, 9 deletions

diff --git a/src/declarative/util/qdeclarativeanimation.cpp b/src/declarative/util/qdeclarativeanimation.cpp
index f644917..1fb3d99 100644
--- a/src/declarative/util/qdeclarativeanimation.cpp
+++ b/src/declarative/util/qdeclarativeanimation.cpp
@@ -1136,9 +1136,10 @@ void QDeclarativeVector3dAnimation::setTo(QVector3D t)
     \brief The RotationAnimation element allows you to animate rotations.
 
     RotationAnimation is a specialized PropertyAnimation that gives control
-    over the direction of rotation. By default, it will rotate
-    via the shortest path; for example, a rotation from 20 to 340 degrees will
-    rotation 40 degrees counterclockwise.
+    over the direction of rotation. By default, it will rotate in the direction
+    of the numerical change; a rotation from 0 to 240 will rotate 220 degrees
+    clockwise, while a rotation from 240 to 0 will rotate 220 degrees
+    counterclockwise.
 
     When used in a transition RotationAnimation will rotate all
     properties named "rotation" or "angle". You can override this by providing
@@ -1153,7 +1154,7 @@ void QDeclarativeVector3dAnimation::setTo(QVector3D t)
         State { name: "-90"; PropertyChanges { target: myItem; rotation: -90 } }
     }
     transition: Transition {
-        RotationAnimation { }
+        RotationAnimation { direction: RotationAnimation.Shortest }
     }
     \endqml
 */
@@ -1205,7 +1206,7 @@ QDeclarativeRotationAnimation::QDeclarativeRotationAnimation(QObject *parent)
 {
     Q_D(QDeclarativeRotationAnimation);
     d->interpolatorType = QMetaType::QReal;
-    d->interpolator = reinterpret_cast<QVariantAnimation::Interpolator>(&_q_interpolateShortestRotation);
+    d->interpolator = QVariantAnimationPrivate::getInterpolator(d->interpolatorType);
     d->defaultProperties = QLatin1String("rotation,angle");
 }
 
@@ -1268,7 +1269,7 @@ void QDeclarativeRotationAnimation::setTo(qreal t)
            A rotation from 10 to 350 will rotate 20 degrees counterclockwise.
     \endtable
 
-    The default direction is Shortest.
+    The default direction is Numerical.
 */
 QDeclarativeRotationAnimation::RotationDirection QDeclarativeRotationAnimation::direction() const
 {
diff --git a/src/declarative/util/qdeclarativeanimation_p_p.h b/src/declarative/util/qdeclarativeanimation_p_p.h
index 8ed745d..55aacfa 100644
--- a/src/declarative/util/qdeclarativeanimation_p_p.h
+++ b/src/declarative/util/qdeclarativeanimation_p_p.h
@@ -353,7 +353,7 @@ class QDeclarativeRotationAnimationPrivate : public QDeclarativePropertyAnimatio
 {
     Q_DECLARE_PUBLIC(QDeclarativeRotationAnimation)
 public:
-    QDeclarativeRotationAnimationPrivate() : direction(QDeclarativeRotationAnimation::Shortest) {}
+    QDeclarativeRotationAnimationPrivate() : direction(QDeclarativeRotationAnimation::Numerical) {}
 
     QDeclarativeRotationAnimation::RotationDirection direction;
 };
diff --git a/tests/auto/declarative/qdeclarativeanimations/tst_qdeclarativeanimations.cpp b/tests/auto/declarative/qdeclarativeanimations/tst_qdeclarativeanimations.cpp
index 076afea..bce7166 100644
--- a/tests/auto/declarative/qdeclarativeanimations/tst_qdeclarativeanimations.cpp
+++ b/tests/auto/declarative/qdeclarativeanimations/tst_qdeclarativeanimations.cpp
@@ -180,7 +180,7 @@ void tst_qdeclarativeanimations::simpleRotation()
     QVERIFY(animation.target() == &rect);
     QVERIFY(animation.property() == "rotation");
     QVERIFY(animation.to() == 270);
-    QVERIFY(animation.direction() == QDeclarativeRotationAnimation::Shortest);
+    QVERIFY(animation.direction() == QDeclarativeRotationAnimation::Numerical);
     animation.start();
     QVERIFY(animation.isRunning());
     QTest::qWait(animation.duration());
@@ -193,7 +193,7 @@ void tst_qdeclarativeanimations::simpleRotation()
     QVERIFY(animation.isPaused());
     animation.setCurrentTime(125);
     QVERIFY(animation.currentTime() == 125);
-    QCOMPARE(rect.rotation(), qreal(-45));
+    QCOMPARE(rect.rotation(), qreal(135));
 }
 
 void tst_qdeclarativeanimations::alwaysRunToEnd()