private void Carousel_OnSelectionChanged(object sender, SelectionChangedEventArgs e)
{
item = (PetProfileViewModel)e.SelectedItem;
//item.BackgroundColor=Color.DarkBlue;
//SfBadgeView badgeView = (SfBadgeView) item.ItemContent;
//SfAvatarView avatar = (SfAvatarView)badgeView.Content;
}
private void Carousel_SelectionChanged(object sender, Syncfusion.SfCarousel.XForms.SelectionChangedEventArgs e)
{
int count = (sender as SfCarousel).SelectedIndex + 1;
DisplayAlert("SelectionChanged", "Carousel item:" + count + " has Selected", "Ok");
}
async void OnSelectionChanged(object sender, Syncfusion.SfCarousel.XForms.SelectionChangedEventArgs e)
{
try
{
busyIndicator.IsBusy = true;
if (e.SelectedIndex > last_index)
{
if ((e.SelectedIndex + first_load) == (last_load - 4) && last_load < _files.Count)
{
var index = e.SelectedIndex;
var start = last_load + 1;
m_carousel.BindingContext = null;
for (int idx = start; idx < (_files.Count > (start + _load_block) ? (start + _load_block) : _files.Count); idx++)
{
if (idx > last_load)
{
last_load = idx;
}
var item = new CarouselModel(_files[idx].Path);
carouselList.ImageCollection.Add(item);
carouselList.ImageCollection.RemoveAt(0);
first_load++;
index--;
}
m_carousel.BindingContext = carouselList;
last_index = index;
if (index != e.SelectedIndex)
{
m_carousel.SelectedIndex = index;
}
}
}
else if (e.SelectedIndex < last_index)
{
if ((e.SelectedIndex + first_load) == (first_load + 4))
{
var index = e.SelectedIndex;
var start = first_load - 1;
var xxx = (start - _load_block) > -1 ? start - _load_block : -1;
m_carousel.BindingContext = null;
for (int idx = start; idx > xxx; idx--)
{
if (idx < first_load)
{
first_load = idx;
}
var item = new CarouselModel(_files[idx].Path);
carouselList.ImageCollection.Insert(0, item);
carouselList.ImageCollection.RemoveAt(carouselList.ImageCollection.Count - 1);
last_load--;
index++;
}
m_carousel.BindingContext = carouselList;
last_index = index;
if (index != e.SelectedIndex)
{
m_carousel.SelectedIndex = index;
}
}
}
else
{
last_index = e.SelectedIndex;
}
}
catch (OutOfMemoryException)
{
await DisplayAlert("Errore!", "Memoria non sufficiente per eseguire l'operazione", "OK");
}
busyIndicator.IsBusy = false;
m_desc.Text = $"Immagini caricate : Memory {first_load}-{last_load} {e.SelectedIndex}+{first_load} == {e.SelectedIndex + first_load} == {last_load - 4}/{_files.Count} - Corrente : {e.SelectedIndex}";
}
