public bool GenerateThumbnail(GenerateThumbnailRequest request)
{
var masterFilePath = request.MasterFilePath;
var thumbNailFilePath = request.ThumbnailFilePath;
using (FileStream pngStream = new FileStream(request.MasterFilePath, FileMode.Open, FileAccess.Read))
{
using (var image = new Bitmap(pngStream))
{
request.MasterFileWidth = image.Width;
request.MasterFileHeight = image.Height;
double ratio = ImageHelpers.CalculateRatioResizingOfImage(request);
int thumbnailCalculatedHeight = Convert.ToInt32(image.Height * ratio);
int thumbnailCalculatedWidth = Convert.ToInt32(image.Width * ratio);
var thumbNailImage = new Bitmap(thumbnailCalculatedWidth, thumbnailCalculatedHeight);
using (var graphics = Graphics.FromImage(thumbNailImage))
{
graphics.CompositingQuality = CompositingQuality.HighSpeed;
graphics.InterpolationMode = InterpolationMode.HighQualityBicubic;
graphics.CompositingMode = CompositingMode.SourceCopy;
graphics.DrawImage(image, 0, 0, thumbnailCalculatedWidth, thumbnailCalculatedHeight);
thumbNailImage.Save(request.ThumbnailFilePath);
}
}
}
return(true);
}