public override void OnScrolled(RecyclerView recyclerView, int dx, int dy)
{
_pos = ((LinearLayoutManager)recyclerView.GetLayoutManager()).FindFirstVisibleItemPosition();
var lastPos = ((LinearLayoutManager)recyclerView.GetLayoutManager()).FindLastVisibleItemPosition();
ScrolledToPosition?.Invoke(lastPos);
// TODO: temporary solution
if (lastPos > _prevPos && lastPos != _prevPos)
{
if (lastPos >= _prevPos + packSize / 2)
{
ScrolledToBottom?.Invoke();
_prevPos = _prevPos + packSize;
}
}
/*if (lastPos > _prevPos && lastPos != _prevPos)
* {
* if (lastPos == recyclerView.GetAdapter().ItemCount - 1)
* {
* if (lastPos < recyclerView.GetAdapter().ItemCount)
* {
* ScrolledToBottom?.Invoke();
* _prevPos = lastPos;
* }
* }
* }*/
}
private void OnScrollChanged(object sender, ScrollChangedEventArgs e)
{
double offset = PackagesListView.ScrollViewer.VerticalOffset;
if (offset >= PackagesListView.ScrollViewer.ScrollableHeight)
{
ScrolledToBottom?.Invoke(this, EventArgs.Empty);
PackagesListView.ScrollViewer.ScrollToVerticalOffset(offset);
}
}
public override void OnScrolled(RecyclerView recyclerView, int dx, int dy)
{
_pos = ((LinearLayoutManager)recyclerView.GetLayoutManager()).FindFirstVisibleItemPosition();
var lastPos = ((LinearLayoutManager)recyclerView.GetLayoutManager()).FindLastVisibleItemPosition();
if (lastPos > _prevPos && lastPos != _prevPos)
{
if (lastPos == recyclerView.GetAdapter().ItemCount - 1)
{
if (lastPos < recyclerView.GetAdapter().ItemCount)
{
ScrolledToBottom?.Invoke();
_prevPos = lastPos;
}
}
}
}
private void Scroll()
{
var point = GetCursorPoint();
if (point.Y < btnScrollUp.Height ||
point.Y > btnScrollDown.Y)
{
return;
}
if (point.Y <= buttonMinY)
{
ViewTop = 0;
RefreshButtonY();
Scrolled?.Invoke(this, EventArgs.Empty);
return;
}
if (point.Y >= buttonMaxY)
{
ViewTop = Length - DisplayedPixelCount;
RefreshButtonY();
Scrolled?.Invoke(this, EventArgs.Empty);
ScrolledToBottom?.Invoke(this, EventArgs.Empty);
return;
}
double difference = buttonMaxY - buttonMinY;
double location = point.Y - buttonMinY;
int nonDisplayedLines = Length - DisplayedPixelCount;
ViewTop = (int)(location / difference * nonDisplayedLines);
RefreshButtonY();
Scrolled?.Invoke(this, EventArgs.Empty);
}