/// <summary>
/// MainViewModel constructor
/// </summary>
public MainViewModel(double titleHeight)
{
this.Pages = new ObservableCollection<ImagesPage>();
// Add spacer to top of page
var spacerPage = new ImagesPage(null);
spacerPage.Grid.Height = titleHeight;
this.Pages.Add(spacerPage);
// Initiail load if pages
this.LoadPages(2, true);
}
/// <summary>
/// Loads image page that contains four rows and four columns and can contain up to 16 images
/// </summary>
/// <param name="isPopular">If this is set to true, page will be marked as popular</param>
public void LoadNextPage(bool isPopular = false)
{
// Work around for known _bug in the media framework. Hits the static constructors
// so the user does not need to go to the picture hub first.
// ReSharper disable ReturnValueOfPureMethodIsNotUsed
MediaPlayer.Queue.ToString();
// ReSharper restore ReturnValueOfPureMethodIsNotUsed
var mediaLib = new MediaLibrary();
var models = new List<ImageModel>();
var pictures = mediaLib.Pictures
.OrderByDescending(p => p.Date)
.Skip(this.imagesLoaded)
.Take(isPopular ? ImagesPerPagePopular : ImagesPerPage);
// Go through all pictures
foreach (var picture in pictures) {
// Create image model
var model = new ImageModel() {
Name = picture.Name,
Picture = picture
};
// Create bitmap image and set source to thumbnail stream
var bitmap = new BitmapImage();
bitmap.SetSource(picture.GetThumbnail());
model.ImageSource = bitmap;
// Add mdoel to current list
models.Add(model);
}
if (models.Count > 0) {
// Increase loaded images number to match real count and add model to the pages list
this.imagesLoaded += isPopular ? ImagesPerPagePopular : ImagesPerPage;
var imagesPage = new ImagesPage(models, isPopular);
imagesPage.OnImageTap += ImagesPageImageTap;
this.Pages.Add(imagesPage);
}
}