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Diffstat (limited to 'src/declarative/graphicsitems/qdeclarativeflickable.cpp')
-rw-r--r--src/declarative/graphicsitems/qdeclarativeflickable.cpp19
1 files changed, 9 insertions, 10 deletions
diff --git a/src/declarative/graphicsitems/qdeclarativeflickable.cpp b/src/declarative/graphicsitems/qdeclarativeflickable.cpp
index 65bc233..a40546f 100644
--- a/src/declarative/graphicsitems/qdeclarativeflickable.cpp
+++ b/src/declarative/graphicsitems/qdeclarativeflickable.cpp
@@ -971,20 +971,19 @@ void QDeclarativeFlickable::viewportMoved()
{
Q_D(QDeclarativeFlickable);
- int elapsed = QDeclarativeItemPrivate::restart(d->velocityTime);
- if (!elapsed)
- return;
-
qreal prevY = d->lastFlickablePosition.x();
qreal prevX = d->lastFlickablePosition.y();
d->velocityTimeline.clear();
if (d->pressed) {
- qreal horizontalVelocity = (prevX - d->hData.move.value()) * 1000 / elapsed;
- qreal verticalVelocity = (prevY - d->vData.move.value()) * 1000 / elapsed;
- d->velocityTimeline.move(d->hData.smoothVelocity, horizontalVelocity, d->reportedVelocitySmoothing);
- d->velocityTimeline.move(d->hData.smoothVelocity, 0, d->reportedVelocitySmoothing);
- d->velocityTimeline.move(d->vData.smoothVelocity, verticalVelocity, d->reportedVelocitySmoothing);
- d->velocityTimeline.move(d->vData.smoothVelocity, 0, d->reportedVelocitySmoothing);
+ int elapsed = QDeclarativeItemPrivate::restart(d->velocityTime);
+ if (elapsed > 0) {
+ qreal horizontalVelocity = (prevX - d->hData.move.value()) * 1000 / elapsed;
+ qreal verticalVelocity = (prevY - d->vData.move.value()) * 1000 / elapsed;
+ d->velocityTimeline.move(d->hData.smoothVelocity, horizontalVelocity, d->reportedVelocitySmoothing);
+ d->velocityTimeline.move(d->hData.smoothVelocity, 0, d->reportedVelocitySmoothing);
+ d->velocityTimeline.move(d->vData.smoothVelocity, verticalVelocity, d->reportedVelocitySmoothing);
+ d->velocityTimeline.move(d->vData.smoothVelocity, 0, d->reportedVelocitySmoothing);
+ }
} else {
if (d->timeline.time() > d->vTime) {
qreal horizontalVelocity = (prevX - d->hData.move.value()) * 1000 / (d->timeline.time() - d->vTime);