void ScrollView::handleReleaseLogic(Touch *touch)
{
// Gather the last touch information when released
{
Vec2 touchPositionInNodeSpace = this->convertToNodeSpace(touch->getLocation());
Vec2 previousTouchPositionInNodeSpace = this->convertToNodeSpace(touch->getPreviousLocation());
Vec2 delta = touchPositionInNodeSpace - previousTouchPositionInNodeSpace;
gatherTouchMove(delta);
}
_bePressed = false;
bool bounceBackStarted = startBounceBackIfNeeded();
if(!bounceBackStarted && _inertiaScrollEnabled)
{
Vec2 touchMoveVelocity = calculateTouchMoveVelocity();
if(touchMoveVelocity != Vec2::ZERO)
{
startInertiaScroll(touchMoveVelocity);
}
}
if(_verticalScrollBar != nullptr)
{
_verticalScrollBar->onTouchEnded();
}
if(_horizontalScrollBar != nullptr)
{
_horizontalScrollBar->onTouchEnded();
}
}
void ScrollView::processInertiaScrolling(float dt)
{
_inertiaScrollElapsedTime += dt;
if(isOutOfBoundaryLeftOrRight() || isOutOfBoundaryTopOrBottom())
{
// If the inner container is out of boundary, shorten the inertia time.
_inertiaScrollElapsedTime += dt * (45000 / INERTIA_DEACCELERATION);
}
float percentage = _inertiaScrollElapsedTime / _inertiaScrollExpectedTime;
if(percentage >= 1)
{
_inertiaScrolling = false;
startBounceBackIfNeeded();
return;
}
percentage = tweenfunc::quartEaseOut(percentage);
Vec2 inertiaVelocity = _inertiaInitiVelocity * (1 - percentage);
Vec2 displacement = inertiaVelocity * dt;
if(!_bounceEnabled)
{
Vec2 outOfBoundary = getHowMuchOutOfBoundary(displacement);
if(outOfBoundary != Vec2::ZERO)
{
// Don't allow to go out of boundary
displacement += outOfBoundary;
_inertiaScrolling = false;
}
}
moveChildren(displacement.x, displacement.y);
}
void ScrollView::handleReleaseLogic(Touch *touch)
{
// Gather the last touch information when released
{
Vec3 currPt, prevPt;
if(calculateCurrAndPrevTouchPoints(touch, &currPt, &prevPt))
{
Vec3 delta3 = currPt - prevPt;
Vec2 delta(delta3.x, delta3.y);
gatherTouchMove(delta);
}
}
_bePressed = false;
bool bounceBackStarted = startBounceBackIfNeeded();
if(!bounceBackStarted && _inertiaScrollEnabled)
{
Vec2 touchMoveVelocity = calculateTouchMoveVelocity();
if(touchMoveVelocity != Vec2::ZERO)
{
startInertiaScroll(touchMoveVelocity);
}
}
if(_verticalScrollBar != nullptr)
{
_verticalScrollBar->onTouchEnded();
}
if(_horizontalScrollBar != nullptr)
{
_horizontalScrollBar->onTouchEnded();
}
}
void ScrollView::endRecordSlidAction()
{
bool bounceBackStarted = startBounceBackIfNeeded();
if(!bounceBackStarted && _inertiaScrollEnabled)
{
startInertiaScroll();
}
}
void ScrollView::moveInnerContainer(const Vec2& deltaMove, bool canStartBounceBack)
{
Vec2 adjustedMove = flattenVectorByDirection(deltaMove);
setInnerContainerPosition(getInnerContainerPosition() + adjustedMove);
Vec2 outOfBoundary = getHowMuchOutOfBoundary();
updateScrollBar(outOfBoundary);
if(_bounceEnabled && canStartBounceBack)
{
startBounceBackIfNeeded();
}
}