public static event EventHandler <WallpaperChangedEventArgs> NewWallpaperIssued; //This event notifies listeners the Wallpaper that has been issued.
//For now the only listener of this event is 'LockScreen'
public static void ChangeWallpaper(WallpaperChangedEventArgs e)
{
//It works please refactor because im sure it can be improved:
//maybe we can use LinkedLists to keep a queue of Wallpapers and its posters?
if (CurrentWallpaperPoster != e.WallpaperPoster) //This validation is because is invalid to the same entity to be at the same time the current wallpaper poster and also the previous one.
{
PreviousWallpaperPoster = CurrentWallpaperPoster;
CurrentWallpaperPoster = e.WallpaperPoster;
}
bool alreadywaiting = false;
//The seconds of attention Property is to indicate for how long should the Lockscreen (or any listener of NewWallpaperIssued event) show this Wallpaper.
//After the time has passed we notify that the wallpaper is now cleared (which means that any caller can now set another wallpaper)
if (e.SecondsOfAttention > 0)
{
if (alreadywaiting == false)
{
ThreadPool.QueueUserWorkItem(method =>
{
alreadywaiting = true;
Thread.Sleep(e.SecondsOfAttention * 1000);
CurrentWallpaperCleared?.Invoke(null, new CurrentWallpaperClearedEventArgs {
PreviousWallpaperPoster = PreviousWallpaperPoster
});
alreadywaiting = false;
}
);
}
}
if (e.BlurLevel >= 0 && e.BlurLevel <= 25)
{
if (e.Wallpaper?.Bitmap != null)
{
try
{
BlurImage blurImage = new BlurImage(Application.Context);
blurImage.Load(e.Wallpaper.Bitmap).Intensity(e.BlurLevel);
e.Wallpaper = new BitmapDrawable(Application.Context.Resources, blurImage.GetImageBlur());
}
catch (Exception ex)
{
Log.Error("LiveDisplay", "Failed to blur wallpaper: " + ex.Message);
}
}
}
if (e.OpacityLevel >= 0 || e.OpacityLevel <= 255)
{
if (e.Wallpaper?.Bitmap != null)
{
e.Wallpaper.Alpha = e.OpacityLevel;
}
}
NewWallpaperIssued?.Invoke(null, e);
}