fix horizontal kinetic scrolling
svn path=/trunk/KDE/kdelibs/; revision=1026072
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@ -46,7 +46,7 @@ class KineticScrollingPrivate
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{
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public:
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KineticScrollingPrivate(): mScrollVelocity(0), timerID(0),
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overshoot(40), bounceFlag(0)
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overshoot(40), bounceFlag(0), hasOvershoot(true)
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{ }
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void count()
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@ -81,6 +81,7 @@ public:
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int timerID, overshoot, direction;
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QPoint cposition, minimalPos, maximumPos;
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char bounceFlag;
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bool hasOvershoot;
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QGraphicsWidget *widget;
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QGraphicsWidget *scrollingWidget;
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@ -159,7 +160,7 @@ void KineticScrolling::mouseReleaseEvent(QGraphicsSceneMouseEvent *event)
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d->direction = KineticScrollingPrivate::Down;
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} else {
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d->direction = KineticScrollingPrivate::None;
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d->mScrollVelocity = (d->kinMovement.x() + d->kinMovement.y())>>2;
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d->mScrollVelocity = d->kinMovement.x() + d->kinMovement.y();
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startAnimationTimer(30);
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return;
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}
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@ -231,13 +232,13 @@ void KineticScrolling::setKineticScrollValue(QPoint value)
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d->widget->setPos(d->cposition);
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if (d->cposition.y() == d->overshoot) {
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if ((d->cposition.y() == d->overshoot) && d->hasOvershoot) {
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d->direction = KineticScrollingPrivate::Up;
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killTimer(d->timerID);
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d->mScrollVelocity = 5;
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startAnimationTimer(30);
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} else if (d->cposition.y() == d->minimalPos.y()) {
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} else if ((d->cposition.y() == d->minimalPos.y()) && d->hasOvershoot) {
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d->direction = KineticScrollingPrivate::Down;
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killTimer(d->timerID);
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d->mScrollVelocity = 5;
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@ -289,7 +290,6 @@ void KineticScrolling::bounceTimer()
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}
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}
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void KineticScrolling::doneOvershoot(void)
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{
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d->direction = KineticScrollingPrivate::None;
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@ -303,6 +303,32 @@ void KineticScrolling::setWidgets(QGraphicsWidget *widget,
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{
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d->widget = widget;
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d->scrollingWidget = scrolling;
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if(d->widget->size().height() <= d->scrollingWidget->size().height()) {
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d->hasOvershoot = false;
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d->overshoot = 0;
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}
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d->widget->installEventFilter(this);
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}
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bool KineticScrolling::eventFilter(QObject *watched, QEvent *event)
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{
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const int threashold = 10;
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if (!d->widget) {
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return false;
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}
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if (watched == d->widget && event->type() == QEvent::GraphicsSceneResize) {
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if(d->widget->size().height() <= d->scrollingWidget->size().height()+threashold) {
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d->hasOvershoot = false;
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d->overshoot = 0;
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} else {
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d->hasOvershoot = true;
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d->overshoot = 40;
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}
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}
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return false;
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}
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} // namespace Plasma
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@ -47,6 +47,7 @@ class KineticScrolling: public QObject
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private:
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KineticScrollingPrivate *d;
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void timerEvent(QTimerEvent *event);
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bool eventFilter(QObject *watched, QEvent *event);
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void bounceTimer();
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qreal duration();
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QPoint movement();
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