public static async Task <Uri> CacheIllustrationAsync(Uri internetUri, string fileName = null)
{
if (string.IsNullOrEmpty(fileName))
{
fileName = internetUri.LocalPath;
fileName = Path.GetFileName(fileName);
}
if (IllustrationFolder == null)
{
IllustrationFolder = await ApplicationData.Current.LocalFolder.CreateFolderAsync("illustration", CreationCollisionOption.OpenIfExists);
}
StorageFile file = null;
var localUri = new Uri(string.Format("ms-appdata:///local/illustration/{0}", fileName));
try
{
file = await IllustrationFolder.GetFileAsync(fileName);
return(localUri);
}
catch (FileNotFoundException)
{
}
try
{
using (var response = await System.Net.HttpWebRequest.CreateHttp(internetUri).GetResponseAsync())
{
using (var stream = response.GetResponseStream())
{
file = await IllustrationFolder.CreateFileAsync(fileName);
using (var filestream = await file.OpenStreamForWriteAsync())
{
await stream.CopyToAsync(filestream);
return(localUri);
}
}
}
}
catch (Exception)
{
}
return(null);
}
public static async Task <Uri> CreateTileImageAsync(Uri imageUri, string fileName = null, TileSize tileSize = TileSize.Square150x150)
{
//BitmapImage bitmap = new BitmapImage(imageUri);
Size imgSize;
if (string.IsNullOrEmpty(fileName))
{
fileName = imageUri.LocalPath;
fileName = Path.GetFileName(fileName);
string sizeSuffix = "-150";
switch (tileSize)
{
default:
case TileSize.Default:
case TileSize.Square150x150:
sizeSuffix = "-150";
imgSize.Height = 150;
imgSize.Width = 150;
break;
case TileSize.Square30x30:
sizeSuffix = "-30";
imgSize.Width = 30;
imgSize.Height = 30;
break;
case TileSize.Square310x310:
sizeSuffix = "-310";
imgSize.Width = 310;
imgSize.Height = 310;
break;
//case TileSize.Square70x70:
// sizeSuffix = "-70";
// imgSize.Width = 70;
// imgSize.Height = 70;
// break;
case TileSize.Wide310x150:
sizeSuffix = "-310x150";
imgSize.Width = 310;
imgSize.Height = 150;
break;
}
fileName = Path.GetFileNameWithoutExtension(fileName) + sizeSuffix + Path.GetExtension(fileName);
}
var localUri = new Uri(string.Format("ms-appdata:///local/illustration/{0}", fileName));
if (IllustrationFolder == null)
{
IllustrationFolder = await ApplicationData.Current.LocalFolder.CreateFolderAsync("illustration", CreationCollisionOption.OpenIfExists);
}
StorageFile file = null;
try
{
file = await IllustrationFolder.GetFileAsync(fileName);
return(localUri);
}
catch (FileNotFoundException)
{
}
try
{
using (var client = new HttpClient())
{
using (var stream = await client.GetInputStreamAsync(imageUri))
{
using (var memstream = new InMemoryRandomAccessStream())
{
await stream.AsStreamForRead().CopyToAsync(memstream.AsStreamForWrite());
BitmapDecoder decoder = await BitmapDecoder.CreateAsync(memstream);
file = await IllustrationFolder.CreateFileAsync(fileName);
using (var targetStream = await file.OpenAsync(FileAccessMode.ReadWrite))
{
BitmapEncoder encoder = await BitmapEncoder.CreateForTranscodingAsync(targetStream, decoder);
var transform = CreateUniformToFillTransform(new Size(decoder.PixelWidth, decoder.PixelHeight), imgSize);
encoder.BitmapTransform.InterpolationMode = BitmapInterpolationMode.Cubic;
encoder.BitmapTransform.ScaledHeight = transform.ScaledHeight;
encoder.BitmapTransform.ScaledWidth = transform.ScaledWidth;
encoder.BitmapTransform.Bounds = transform.Bounds;
await encoder.FlushAsync();
//WriteableBitmap wbp = new WriteableBitmap(150,150);
//await wbp.SetSourceAsync(memstream);
//await wbp.SaveToFile(Current.IllustrationFolder, fileName);
return(localUri);
}
}
}
}
}
catch (Exception exception)
{
Debug.WriteLine(exception.Message);
}
return(null);
}
