Add an example spinner.

Also add missing increment/decrementCurrentIndex() slots to PathView,
and tweak the number of points cached along a Path.

3 files changed, 38 insertions, 3 deletions

diff --git a/src/declarative/graphicsitems/qdeclarativepath.cpp b/src/declarative/graphicsitems/qdeclarativepath.cpp
index 3d0df87..2d08c7c 100644
--- a/src/declarative/graphicsitems/qdeclarativepath.cpp
+++ b/src/declarative/graphicsitems/qdeclarativepath.cpp
@@ -377,7 +377,9 @@ void QDeclarativePath::createPointCache() const
 {
     Q_D(const QDeclarativePath);
     qreal pathLength = d->_path.length();
-    const int points = int(pathLength*2);
+    // more points means less jitter between items as they move along the
+    // path, but takes longer to generate
+    const int points = int(pathLength*5);
     const int lastElement = d->_path.elementCount() - 1;
     d->_pointCache.resize(points+1);
 
diff --git a/src/declarative/graphicsitems/qdeclarativepathview.cpp b/src/declarative/graphicsitems/qdeclarativepathview.cpp
index 503d096..207cc25 100644
--- a/src/declarative/graphicsitems/qdeclarativepathview.cpp
+++ b/src/declarative/graphicsitems/qdeclarativepathview.cpp
@@ -49,6 +49,7 @@
 #include <qlistmodelinterface_p.h>
 #include <QGraphicsSceneEvent>
 
+#include <qmath.h>
 #include <math.h>
 
 QT_BEGIN_NAMESPACE
@@ -279,8 +280,8 @@ void QDeclarativePathViewPrivate::updateItem(QDeclarativeItem *item, qreal perce
             att->setValue(attr.toUtf8(), path->attributeAt(attr, percent));
     }
     QPointF pf = path->pointAt(percent);
-    item->setX(pf.x() - item->width()*item->scale()/2);
-    item->setY(pf.y() - item->height()*item->scale()/2);
+    item->setX(qRound(pf.x() - item->width()*item->scale()/2));
+    item->setY(qRound(pf.y() - item->height()*item->scale()/2));
 }
 
 void QDeclarativePathViewPrivate::regenerate()
@@ -527,6 +528,33 @@ void QDeclarativePathView::setCurrentIndex(int idx)
 }
 
 /*!
+    \qmlmethod PathView::incrementCurrentIndex()
+
+    Increments the current index.
+*/
+void QDeclarativePathView::incrementCurrentIndex()
+{
+    setCurrentIndex(currentIndex()+1);
+}
+
+
+/*!
+    \qmlmethod PathView::decrementCurrentIndex()
+
+    Decrements the current index.
+*/
+void QDeclarativePathView::decrementCurrentIndex()
+{
+    Q_D(QDeclarativePathView);
+    if (d->model && d->model->count()) {
+        int idx = currentIndex()-1;
+        if (idx < 0)
+            idx = d->model->count() - 1;
+        setCurrentIndex(idx);
+    }
+}
+
+/*!
     \qmlproperty real PathView::offset
 
     The offset specifies how far along the path the items are from their initial positions.
@@ -1312,6 +1340,7 @@ int QDeclarativePathViewPrivate::calcCurrentIndex()
         if (offset < 0)
             offset += model->count();
         current = qRound(qAbs(qmlMod(model->count() - offset, model->count())));
+        current = current % model->count();
     }
 
     return current;
diff --git a/src/declarative/graphicsitems/qdeclarativepathview_p.h b/src/declarative/graphicsitems/qdeclarativepathview_p.h
index 85f47fd..349a01c 100644
--- a/src/declarative/graphicsitems/qdeclarativepathview_p.h
+++ b/src/declarative/graphicsitems/qdeclarativepathview_p.h
@@ -132,6 +132,10 @@ public:
 
     static QDeclarativePathViewAttached *qmlAttachedProperties(QObject *);
 
+public Q_SLOTS:
+    void incrementCurrentIndex();
+    void decrementCurrentIndex();
+
 Q_SIGNALS:
     void currentIndexChanged();
     void offsetChanged();