public async void OnGlobalLayout()
{
productImage.ViewTreeObserver.RemoveGlobalOnLayoutListener(this);
const int DeltaX = 100;
var img1 = Images.FromUrl(Product.ImageForSize(images [0], Images.ScreenWidth));
var img2 = Images.FromUrl(Product.ImageForSize(images [1], Images.ScreenWidth));
productDrawable = new KenBurnsDrawable(Color.DarkBlue);
productDrawable.FirstBitmap = await img1;
productDrawable.SecondBitmap = await img2;
productImage.SetImageDrawable(productDrawable);
currentIndex++;
var evaluator = new MatrixEvaluator();
var finalMatrix = new Matrix();
finalMatrix.SetTranslate(-DeltaX, -(float)productDrawable.FirstBitmap.Height / 1.3f + (float)productImage.Height);
finalMatrix.PostScale(1.27f, 1.27f);
kenBurnsMovement = ValueAnimator.OfObject(evaluator, new Matrix(), finalMatrix);
kenBurnsMovement.Update += (sender, e) => productDrawable.SetMatrix((Matrix)e.Animation.AnimatedValue);
kenBurnsMovement.SetDuration(14000);
kenBurnsMovement.RepeatMode = ValueAnimatorRepeatMode.Reverse;
kenBurnsMovement.RepeatCount = ValueAnimator.Infinite;
kenBurnsMovement.Start();
kenBurnsAlpha = ObjectAnimator.OfInt(productDrawable, "alpha", 0, 0, 0, 255, 255, 255);
kenBurnsAlpha.SetDuration(kenBurnsMovement.Duration);
kenBurnsAlpha.RepeatMode = ValueAnimatorRepeatMode.Reverse;
kenBurnsAlpha.RepeatCount = ValueAnimator.Infinite;
kenBurnsAlpha.AnimationRepeat += (sender, e) => NextImage();
kenBurnsAlpha.Start();
}
async void NextImage()
{
currentIndex = (currentIndex + 1) % images.Length;
var image = images [currentIndex];
await Images.SetImageFromUrlAsync(productDrawable, Product.ImageForSize(image, Images.ScreenWidth));
PrecacheNextImage();
}
async void LoadProductImage(View mainView, ProgressBar progressView, ImageView imageView, Product product)
{
var currentId = mainView.Id;
progressView.Visibility = ViewStates.Visible;
imageView.SetImageResource(Android.Resource.Color.Transparent);
await Images.SetImageFromUrlAsync(imageView, product.ImageForSize(Images.ScreenWidth));
progressView.Visibility = ViewStates.Invisible;
}
public async Task PreloadImages(float imageWidth)
{
if (hasPreloadedImages)
{
return;
}
hasPreloadedImages = true;
//Lets precach the countries too
#pragma warning disable 4014
GetCountries();
#pragma warning restore 4014
await Task.Factory.StartNew(() => {
var imagUrls = products.SelectMany(x => x.ImageUrls.Select(y => Product.ImageForSize(y, imageWidth))).ToList();
imagUrls.ForEach(async(x) => await FileCache.Download(x));
});
}
public async Task Update(Product product)
{
NameLabel.Text = product.Name;
SizeLabel.Text = product.Size.Description;
ColorLabel.Text = product.Color.Name;
PriceLabel.Text = product.PriceDescription;
var imageTask = FileCache.Download(product.ImageForSize(320));
if (!imageTask.IsCompleted)
{
//Put default before doing the web request;
ImageView.Image = Image.Value;
}
var image = await imageTask;
ImageView.Image = UIImage.FromFile(image);
}
void AnimateImages()
{
if (images.Length < 1)
{
return;
}
if (images.Length == 1)
{
//No need to await the change
#pragma warning disable 4014
Images.SetImageFromUrlAsync(productImage, Product.ImageForSize(images [0], Images.ScreenWidth));
#pragma warning restore 4014
return;
}
productImage.ViewTreeObserver.AddOnGlobalLayoutListener(this);
}
void PrecacheNextImage()
{
if (currentIndex + 1 >= images.Length)
{
cached = true;
}
if (cached)
{
return;
}
var next = currentIndex + 1;
var image = images [next];
//No need to await the precache to finish
#pragma warning disable 4014
FileCache.Download(Product.ImageForSize(image, Images.ScreenWidth));
#pragma warning restore 4014
}
public override View GetView(int position, View convertView, ViewGroup parent)
{
Product product = items [position];
View view = convertView; // re-use an existing view, if one is available
if (view == null) // otherwise create a new one
{
view = LayoutInflater.From(context).Inflate(Resource.Layout.BasketItem, parent, false);
var swipper = ((SwipableListItem)view).SwipeListener;
swipper.SwipeGestureBegin += (sender, e) => ((ListView)parent).RequestDisallowInterceptTouchEvent(true);
swipper.SwipeGestureEnd += (sender, e) => ((ListView)parent).RequestDisallowInterceptTouchEvent(false);
swipper.ItemSwipped += (sender, e) => {
// If view has already been processed, do nothing
if (view.Parent == null)
{
return;
}
var p = ((ListView)parent).GetPositionForView(view);
var order = WebService.Shared.CurrentOrder;
order.Remove(order.Products [p]);
NotifyDataSetChanged();
};
}
view.FindViewById <TextView> (Resource.Id.productTitle).Text = product.Name;
view.FindViewById <TextView> (Resource.Id.productPrice).Text = product.PriceDescription;
view.FindViewById <TextView> (Resource.Id.productColor).Text = product.Color.ToString();
view.FindViewById <TextView> (Resource.Id.productSize).Text = product.Size.Description;
var orderImage = view.FindViewById <ImageView> (Resource.Id.productImage);
orderImage.SetImageResource(Resource.Drawable.blue_shirt);
//No need to wait for the async download to return the view
#pragma warning disable 4014
orderImage.SetImageFromUrlAsync(product.ImageForSize(Images.ScreenWidth));
#pragma warning restore 4014
return(view);
}
public async Task Update (Product product)
{
NameLabel.Text = product.Name;
SizeLabel.Text = product.Size.Description;
ColorLabel.Text = product.Color.Name;
PriceLabel.Text = product.PriceDescription;
var imageTask = FileCache.Download (product.ImageForSize (320));
if(!imageTask.IsCompleted)
//Put default before doing the web request;
ImageView.Image = Image.Value;
var image = await imageTask;
ImageView.Image = UIImage.FromFile (image);
}
public async Task Update (Product product)
{
var isSurprise = product.GetType () == typeof(SurpriseProduct);
NameLabel.Text = isSurprise ? SurpriseProduct.SurpriseProductName : product.Name;
SizeLabel.Text = isSurprise ? "???" : product.Size.Description;
ColorLabel.Text = isSurprise ? "???" : product.Color.Name;
PriceLabel.Text = product.PriceDescription;
if (!isSurprise)
{
var imageTask = FileCache.Download (product.ImageForSize (320));
if (!imageTask.IsCompleted)
//Put default before doing the web request;
ImageView.Image = Image.Value;
var image = await imageTask;
ImageView.Image = UIImage.FromFile (image);
}
}
async void LoadProductImage (View mainView, ProgressBar progressView, ImageView imageView, Product product)
{
var currentId = mainView.Id;
progressView.Visibility = ViewStates.Visible;
imageView.SetImageResource (Android.Resource.Color.Transparent);
await Images.SetImageFromUrlAsync (imageView,product.ImageForSize (Images.ScreenWidth));
progressView.Visibility = ViewStates.Invisible;
}