private void OnGetWallpapers(TLVector <TLWallPaperBase> results, int skip, int take)
{
var currentItem = StateService.CurrentBackground;
foreach (var result in results.Skip(skip).Take(take))
{
var wallpaper = result as TLWallPaper;
if (wallpaper == null)
{
continue;
}
var size = BackgroundImageConverter.GetPhotoSize(wallpaper.Sizes, 480.0);
if (size != null)
{
var location = size.Location as TLFileLocation;
if (location != null)
{
var fileName = String.Format("{0}_{1}_{2}.jpg",
location.VolumeId,
location.LocalId,
location.Secret);
BackgroundItem item;
var isSelected = currentItem != null && "telegram" + wallpaper.Id == currentItem.Name;
if (isSelected)
{
item = currentItem;
item.IsSelected = true;
}
else
{
item = new BackgroundItem
{
Name = "telegram" + wallpaper.Id,
Wallpaper = wallpaper,
IsoFileName = fileName
};
}
Static.Add(item);
}
}
}
}
private void ReplaceBackgroundItem(BackgroundItem item)
{
var currentItem = StateService.CurrentBackground;
if (currentItem != null)
{
currentItem.IsSelected = false;
currentItem.NotifyOfPropertyChange("IsSelected");
}
else
{
_emptyBackground.IsSelected = false;
_emptyBackground.NotifyOfPropertyChange("IsSelected");
}
item.IsSelected = true;
item.NotifyOfPropertyChange("IsSelected");
StateService.CurrentBackground = item;
}
/// <summary>
/// Add a finalizer to check for memory leaks
/// </summary>
//~ChooseBackgroundViewModel()
//{
// TLUtils.WritePerformance("++ChooseBackgroundViewModel dstr");
//}
#endif
public void Choose(BackgroundItem item)
{
if (item == null)
{
return;
}
if (item == _libraryBackground)
{
var task = new PhotoChooserTask
{
PixelHeight = 800,
PixelWidth = 480,
ShowCamera = true
};
task.Completed += (sender, result) =>
{
if (result.TaskResult != TaskResult.OK)
{
return;
}
byte[] bytes;
var sourceStream = result.ChosenPhoto;
var fileName = Path.GetFileName(result.OriginalFileName);
if (string.IsNullOrEmpty(fileName))
{
return;
}
using (var memoryStream = new MemoryStream())
{
sourceStream.CopyTo(memoryStream);
bytes = memoryStream.ToArray();
}
using (var store = IsolatedStorageFile.GetUserStoreForApplication())
{
using (var file = store.OpenFile(fileName, FileMode.CreateNew))
{
file.Write(bytes, 0, bytes.Length);
}
}
_libraryBackground.IsoFileName = fileName;
ReplaceBackgroundItem(_libraryBackground);
};
task.Show();
return;
}
if (item == AnimatedBackground1)
{
MessageBox.Show(AppResources.PleaseNoteThatAnimatedBackgroundConsumesMoreBatteryResources);
}
ReplaceBackgroundItem(item);
}
public ChooseBackgroundViewModel(ICacheService cacheService, ICommonErrorHandler errorHandler, IStateService stateService, INavigationService navigationService, IMTProtoService mtProtoService, ITelegramEventAggregator eventAggregator)
: base(cacheService, errorHandler, stateService, navigationService, mtProtoService, eventAggregator)
{
Static = new ObservableCollection <BackgroundItem>();
var currentBackground = StateService.CurrentBackground;
if (currentBackground != null &&
currentBackground.Name == Constants.EmptyBackgroundString)
{
_emptyBackground = currentBackground;
_emptyBackground.IsSelected = true;
}
else
{
_emptyBackground = new BackgroundItem
{
Name = Constants.EmptyBackgroundString,
SourceString = string.Empty,
IsSelected = currentBackground == null
};
}
if (currentBackground != null &&
currentBackground.Name == Constants.LibraryBackgroundString)
{
_libraryBackground = currentBackground;
_libraryBackground.IsSelected = true;
}
else
{
_libraryBackground = new BackgroundItem
{
Name = Constants.LibraryBackgroundString,
SourceString = "/Images/Backgrounds/gallery_WXGA.png"
};
}
_userCachedWallpapers = _cachedWallpapers != null;
if (!_userCachedWallpapers)
{
IsWorking = true;
MTProtoService.GetWallpapersAsync(
results =>
{
IsWorking = false;
_cachedWallpapers = results;
Telegram.Api.Helpers.Execute.BeginOnUIThread(() =>
{
if (_forwardInAnimationComplete)
{
OnGetWallpapers(results, 0, results.Count);
}
else
{
_wallpapers = results;
//OnGetWallpapers(results, 0, 4);
}
});
},
error =>
{
IsWorking = false;
Telegram.Api.Helpers.Execute.ShowDebugMessage("account.getWallpapers error " + error);
});
}
else
{
OnGetWallpapers(_cachedWallpapers, 0, 4);
}
eventAggregator.Subscribe(this);
}
