private bool TryProcessRequestFromCache(HttpResponse response)
{
bool retVal = false;
byte[] imageBytes = ImageCacheBroker.GetImageBytes();
if (imageBytes != null && imageBytes.Length > 0)
{
response.ContentType = ImageMetadata.ContentType;
response.AppendHeader("Content-Disposition", string.Concat("inline; filename=\"", ImageMetadata.SaveName, "\""));
response.AppendHeader("Content-Length", imageBytes.Length.ToString(CultureInfo.InvariantCulture));
response.Cache.SetCacheability(HttpCacheability.Public);
response.Cache.SetAllowResponseInBrowserHistory(true);
response.Cache.SetLastModified(ImageMetadata.LastModifiedDate);
response.Cache.SetValidUntilExpires(true);
response.Cache.SetExpires(DateTime.UtcNow.AddMinutes(ImageSettings.ClientCacheTimeout));
response.OutputStream.Write(imageBytes, 0, imageBytes.Length);
retVal = true;
}
return(retVal);
}
private void ProcessFullRequest(HttpResponse response)
{
using (MemoryStream memoryStream = new MemoryStream()) {
ImageTransformer imageTransformer = new ImageTransformer();
imageTransformer.GraphicsQuality = ImageSettings.GraphicsQuality;
imageTransformer.Copyright = ImageSettings.Copyright;
imageTransformer.CopyrightSize = ImageSettings.CopyrightSize;
imageTransformer.MaxWidth = ImageSettings.MaxWidth;
imageTransformer.MaxHeight = ImageSettings.MaxHeight;
imageTransformer.Grayscale = ImageSettings.Grayscale;
imageTransformer.Negative = ImageSettings.Negative;
imageTransformer.Sepia = ImageSettings.Sepia;
imageTransformer.Clip = ImageSettings.Clip;
imageTransformer.Quantize = ImageSettings.Quantize;
imageTransformer.MaintainPalette = ImageSettings.MaintainPalette;
imageTransformer.Brightness = ImageSettings.Brightness;
imageTransformer.Contrast = ImageSettings.Contrast;
imageTransformer.Opacity = ImageSettings.Opacity;
string customTransform = ImageSettings.CustomTransform;
if (!string.IsNullOrEmpty(customTransform))
{
string customTransformClassName = config.GetImageTransformClassName(customTransform);
ImageTransform customTransformClass = ImageTransformFactory.Create(customTransformClassName);
ICustomDataConsumer customTransFormClassAsCustomDataConsumer = customTransformClass as ICustomDataConsumer;
if (customTransFormClassAsCustomDataConsumer != null)
{
customTransFormClassAsCustomDataConsumer.SetCustomData(ImageSettings.CustomData);
}
imageTransformer.CustomTransforms.Add(customTransformClass);
}
ImageRetriever.EnsureImage();
using (Image originalImage = ImageRetriever.GetImage())
using (Image resizedBitmap = imageTransformer.Transform(originalImage)) {
long outputQuality = ImageSettings.OutputQuality;
ImageFormat imageFormat = ImageMetadata.ImageFormat;
resizedBitmap.SaveToMemoryStream(memoryStream, imageFormat, outputQuality);
}
memoryStream.Capacity = (int)memoryStream.Position;
if (memoryStream.Capacity > 0)
{
if (ImageSettings.ServerCacheTimeout > 0)
{
ImageCacheBroker.AddImageBytes(memoryStream.ToArray());
}
response.ContentType = ImageMetadata.ContentType;
response.AppendHeader("Content-Disposition", string.Concat("inline; filename=\"", ImageMetadata.SaveName, "\""));
response.AppendHeader("Content-Length", memoryStream.Capacity.ToString(CultureInfo.InvariantCulture));
response.Cache.SetCacheability(HttpCacheability.Public);
response.Cache.SetAllowResponseInBrowserHistory(true);
response.Cache.SetLastModified(ImageMetadata.LastModifiedDate);
response.Cache.SetValidUntilExpires(true);
response.Cache.SetExpires(DateTime.UtcNow.AddMinutes(ImageSettings.ClientCacheTimeout));
memoryStream.WriteTo(response.OutputStream);
}
}
}
