private static void WriteWebConfig(IStorageFile webConfigFile)
{
using (var stream = webConfigFile.OpenWrite()) {
using (var tw = new StreamWriter(stream)) {
tw.Write(WebConfig);
}
}
}
/// <summary>
/// Creates an images thumbnail.
/// </summary>
/// <param name="image">The image full path on the media storage.</param>
/// <param name="thumbnailFolderPath">The media path to thumbnails folder.</param>
/// <param name="imageName">The image name.</param>
/// <param name="thumbnailWidth">The thumbnail width in pixels.</param>
/// <param name="thumbnailHeight">The thumbnail height in pixels.</param>
/// <param name="keepAspectRatio">Indicates whether to keep the original image aspect ratio</param>
/// <param name="expandToFill">Indicates whether to expand the thumbnail to fill the bounds specified by width and height</param>
/// <returns>The thumbnail file media path.</returns>
protected Thumbnail CreateThumbnail(string image, string thumbnailFolderPath, string imageName, int thumbnailWidth,
int thumbnailHeight, bool keepAspectRatio, bool expandToFill)
{
if (thumbnailWidth <= 0)
{
throw new ArgumentException("Thumbnail width must be greater than zero", "thumbnailWidth");
}
if (thumbnailHeight <= 0)
{
throw new ArgumentException("Thumbnail height must be greater than zero", "thumbnailHeight");
}
string thumbnailFilePath = _storageProvider.Combine(thumbnailFolderPath, imageName);
IStorageFile imageFile = _storageProvider.GetFile(image);
using (Stream imageStream = imageFile.OpenRead()) {
using (Image drawingImage = Image.FromStream(imageStream))
{
bool shouldCreateImage = true;
// Verify if the image already has a Thumbnail
var thumbnailName = _mediaService.GetMediaFiles(thumbnailFolderPath)
.Select(o => o.Name).SingleOrDefault(o => o == imageName);
if (thumbnailName != null)
{
// Verify if the existing thumbnail has the correct size (in case the thumbnail settings have been changed)
IStorageFile thumbnailFile = _storageProvider.GetFile(thumbnailFilePath);
using (Stream thumnailFileStream = thumbnailFile.OpenRead()) {
using (Image thumbnailImage = Image.FromStream(thumnailFileStream)) {
if (ImageHasCorrectThumbnail(drawingImage, thumbnailImage, thumbnailWidth, thumbnailHeight, keepAspectRatio, expandToFill))
{
shouldCreateImage = false;
thumbnailWidth = thumbnailImage.Width;
thumbnailHeight = thumbnailImage.Height;
}
}
}
}
if (shouldCreateImage)
{
using (Image thumbDrawing = CreateThumbnail(drawingImage, thumbnailWidth, thumbnailHeight, keepAspectRatio, expandToFill)) {
if (_storageProvider.ListFiles(thumbnailFolderPath).Select(o => o.GetName()).Contains(imageName))
{
_storageProvider.DeleteFile(thumbnailFilePath);
}
IStorageFile thumbFile = _storageProvider.CreateFile(thumbnailFilePath);
using (Stream thumbStream = thumbFile.OpenWrite())
{
thumbDrawing.Save(thumbStream, _thumbnailImageFormat);
thumbnailWidth = thumbDrawing.Width;
thumbnailHeight = thumbDrawing.Height;
}
}
}
}
}
string thumbnailPublicUrl = _mediaService.GetMediaPublicUrl(Path.GetDirectoryName(thumbnailFilePath), Path.GetFileName(thumbnailFilePath));
return(new Thumbnail {
PublicUrl = thumbnailPublicUrl, Width = thumbnailWidth, Height = thumbnailHeight
});
}
private static void WriteWebConfig(IStorageFile webConfigFile)
{
using (var stream = webConfigFile.OpenWrite()) {
using (var tw = new StreamWriter(stream)) {
tw.Write(WebConfig);
}
}
}