private void Toolbar_ContainerContentChanging(ListViewBase sender, ContainerContentChangingEventArgs args)
{
if (args.InRecycleQueue)
{
return;
}
if (args.Item is SupergroupStickerSetViewModel supergroup)
{
var chat = ViewModel.CacheService.GetChat(supergroup.ChatId);
if (chat == null)
{
return;
}
var content = args.ItemContainer.ContentTemplateRoot as ProfilePicture;
if (content == null)
{
return;
}
content.Source = PlaceholderHelper.GetChat(ViewModel.ProtoService, chat, 36);
}
else if (args.Item is StickerSetViewModel sticker)
{
var content = args.ItemContainer.ContentTemplateRoot as Grid;
var photo = content?.Children[0] as Image;
if (content == null || sticker == null || (sticker.Thumbnail == null && sticker.Covers == null))
{
return;
}
var cover = sticker.Thumbnail ?? sticker.Covers.FirstOrDefault()?.Thumbnail;
if (cover == null)
{
photo.Source = null;
return;
}
var file = cover.File;
if (file.Local.IsDownloadingCompleted)
{
if (sticker.IsAnimated)
{
photo.Source = PlaceholderHelper.GetLottieFrame(file.Local.Path, 0, 36, 36);
}
else
{
photo.Source = PlaceholderHelper.GetWebPFrame(file.Local.Path);
}
}
else if (file.Local.CanBeDownloaded && !file.Local.IsDownloadingActive)
{
photo.Source = null;
DownloadFile(_stickerSets, file.Id, sticker);
}
}
}
private void OnContainerContentChanging(ListViewBase sender, ContainerContentChangingEventArgs args)
{
if (args.InRecycleQueue)
{
return;
}
var content = args.ItemContainer.ContentTemplateRoot as Grid;
var stickerSet = args.Item as StickerSetInfo;
content.Tag = stickerSet;
if (args.Phase == 0)
{
var title = content.Children[1] as TextBlock;
title.Text = stickerSet.Title;
}
else if (args.Phase == 1)
{
var subtitle = content.Children[2] as TextBlock;
subtitle.Text = Locale.Declension("Stickers", stickerSet.Size);
}
else if (args.Phase == 2)
{
var photo = content.Children[0] as Image;
var cover = stickerSet.Thumbnail ?? stickerSet.Covers.FirstOrDefault()?.Thumbnail;
if (cover == null)
{
return;
}
var file = cover.File;
if (file.Local.IsDownloadingCompleted)
{
if (cover.Format is ThumbnailFormatTgs)
{
photo.Source = PlaceholderHelper.GetLottieFrame(file.Local.Path, 0, 48, 48);
}
else
{
photo.Source = PlaceholderHelper.GetWebPFrame(file.Local.Path);
}
}
else if (file.Local.CanBeDownloaded && !file.Local.IsDownloadingActive)
{
photo.Source = null;
ViewModel.ProtoService.DownloadFile(file.Id, 1);
}
}
if (args.Phase < 2)
{
args.RegisterUpdateCallback(OnContainerContentChanging);
}
args.Handled = true;
}
private async void Grid_DataContextChanged(FrameworkElement sender, DataContextChangedEventArgs args)
{
var content = sender as Grid;
var stickerSet = args.NewValue as StickerSetInfo;
var title = content.Children[1] as TextBlock;
var subtitle = content.Children[2] as TextBlock;
var photo = content.Children[0] as Image;
if (stickerSet == null)
{
title.Text = Strings.Resources.ChooseStickerSetNotFound;
subtitle.Text = Strings.Resources.ChooseStickerSetNotFoundInfo;
photo.Source = null;
return;
}
title.Text = stickerSet.Title;
subtitle.Text = Locale.Declension("Stickers", stickerSet.Size);
var cover = stickerSet.Thumbnail ?? stickerSet.Covers.FirstOrDefault()?.Thumbnail;
if (cover == null)
{
return;
}
var file = cover.Photo;
if (file.Local.IsDownloadingCompleted)
{
if (stickerSet.IsAnimated)
{
var bitmap = PlaceholderHelper.GetLottieFrame(file.Local.Path, 0, 48, 48);
if (bitmap == null)
{
bitmap = await PlaceholderHelper.GetWebpAsync(file.Local.Path);
}
photo.Source = bitmap;
}
else
{
photo.Source = await PlaceholderHelper.GetWebpAsync(file.Local.Path);
}
}
else if (file.Local.CanBeDownloaded && !file.Local.IsDownloadingActive)
{
photo.Source = null;
ViewModel.ProtoService.DownloadFile(file.Id, 1);
}
}
public void UpdateFile(File file)
{
if (_stickers.TryGetValue(file.Id, out List <StickerViewModel> items) && items.Count > 0)
{
foreach (var item in items)
{
item.UpdateFile(file);
if (item.Thumbnail?.File.Id == file.Id)
{
var container = Stickers.ContainerFromItem(item) as SelectorItem;
if (container == null)
{
continue;
}
var content = container.ContentTemplateRoot as Grid;
var photo = content.Children[0] as Image;
photo.Source = PlaceholderHelper.GetWebPFrame(file.Local.Path);
}
else if (item.StickerValue.Id == file.Id)
{
_handler.ThrottleVisibleItems();
}
}
}
if (_stickerSets.TryGetValue(file.Id, out List <StickerSetViewModel> sets) && sets.Count > 0)
{
foreach (var item in sets)
{
var cover = item.Thumbnail ?? item.Covers.FirstOrDefault()?.Thumbnail;
if (cover == null)
{
continue;
}
cover.UpdateFile(file);
var container = Toolbar.ContainerFromItem(item) as SelectorItem;
if (container == null)
{
continue;
}
var content = container.ContentTemplateRoot as Grid;
var photo = content?.Children[0] as Image;
if (content == null)
{
continue;
}
if (item.IsAnimated)
{
photo.Source = PlaceholderHelper.GetLottieFrame(file.Local.Path, 0, 36, 36);
}
else
{
photo.Source = PlaceholderHelper.GetWebPFrame(file.Local.Path);
}
}
}
_zoomer.UpdateFile(file);
}