public void Test_IsSupported()
{
ImageOptimizer optimizer = new ImageOptimizer();
ExceptionAssert.Throws<ArgumentNullException>(delegate ()
{
optimizer.IsSupported((FileInfo)null);
});
ExceptionAssert.Throws<ArgumentNullException>(delegate ()
{
optimizer.IsSupported((string)null);
});
ExceptionAssert.Throws<ArgumentException>(delegate ()
{
optimizer.IsSupported("");
});
Assert.IsTrue(optimizer.IsSupported(Files.FujiFilmFinePixS1ProGIF));
Assert.IsTrue(optimizer.IsSupported(Files.ImageMagickJPG));
Assert.IsTrue(optimizer.IsSupported(Files.SnakewarePNG));
Assert.IsTrue(optimizer.IsSupported(Files.Missing));
Assert.IsFalse(optimizer.IsSupported(Files.InvitationTif));
}
public static void MakeGooglePageSpeedInsightsHappy()
{
FileInfo snakewareLogo = new FileInfo(SampleFiles.OutputDirectory + "OptimizeTest.jpg");
File.Copy(SampleFiles.SnakewareJpg, snakewareLogo.FullName, true);
Console.WriteLine("Bytes before: " + snakewareLogo.Length);
ImageOptimizer optimizer = new ImageOptimizer();
optimizer.LosslessCompress(snakewareLogo);
snakewareLogo.Refresh();
Console.WriteLine("Bytes after: " + snakewareLogo.Length);
}
public async Task <string> OptimizeImage(IFormFile inputImage, int endHeight, int endWidth)
{
double aspectRatioCoeff = endHeight / endWidth;
var imageName = Guid.NewGuid() + ".jpg";
var inputFileName = Path.Combine(hostingEnvironment.WebRootPath, "images/") + imageName;
using (var initialImageStream = new MemoryStream())
{
inputImage.CopyTo(initialImageStream);
//Compress
initialImageStream.Position = 0;
var optimizer = new ImageMagick.ImageOptimizer();
optimizer.LosslessCompress(initialImageStream);
initialImageStream.Position = 0;
//Resize
using (MagickImage image = new MagickImage(initialImageStream))
{
double tempWidth = 0;
double tempHeight = 0;
double imgHeight = image.Height;
double imgWidth = image.Width;
double aspectRatio = imgHeight / imgWidth;
var scale = Math.Max(endWidth / imgWidth, endHeight / imgHeight);
tempWidth = imgWidth * scale;
tempHeight = imgHeight * scale;
int resultedSize = (int)Math.Max(tempWidth, tempHeight);
MagickGeometry size = new MagickGeometry(resultedSize)
{
IgnoreAspectRatio = false
};
image.Resize(size);
var resizedImageByteArr = image.ToByteArray();
using (var finalImageStream = new MemoryStream(resizedImageByteArr))
{
//Crop
var cropRect = new Rectangle(0, 0, endWidth, endHeight);
using (Bitmap src = new Bitmap(finalImageStream))
{
using (Bitmap target = new Bitmap(cropRect.Width, cropRect.Height))
{
var result = new Rectangle(0, 0, target.Width, target.Height);
Graphics g = Graphics.FromImage(target);
g.DrawImage(src, result, cropRect, GraphicsUnit.Pixel);
target.Save(inputFileName, System.Drawing.Imaging.ImageFormat.Jpeg);
}
}
}
}
}
return(imageName);
}
