GetEncoder(SaveFormat saveFormat)
{
SixLabors.ImageSharp.Formats.IImageEncoder enc = null;
switch (saveFormat)
{
case SaveFormat.Png:
enc = new SixLabors.ImageSharp.Formats.Png.PngEncoder();
break;
case SaveFormat.Jpg:
enc = new SixLabors.ImageSharp.Formats.Jpeg.JpegEncoder();
break;
case SaveFormat.Gif:
enc = new SixLabors.ImageSharp.Formats.Gif.GifEncoder();
break;
case SaveFormat.Bmp:
enc = new SixLabors.ImageSharp.Formats.Bmp.BmpEncoder();
break;
default:
enc = new SixLabors.ImageSharp.Formats.Png.PngEncoder();
break;
}
return(enc);
} // End Function GetEncoder
public static void fooo(string fileName, SaveFormat saveFormat)
{
//var imagePath = Microsoft.AspNetCore.Http.PathString.FromUriComponent("/" + url);
//var fileInfo = _fileProvider.GetFileInfo(imagePath);
var fileInfo = new System.IO.FileInfo(fileName);
//if (!fileInfo.Exists) { return NotFound(); }
int width = 100;
int height = 100;
byte[] data = null;
using (MemoryStream outputStream = new MemoryStream())
{
using (System.IO.Stream inputStream = fileInfo.OpenRead())
{
using (Image <Rgba32> image = Image.Load(inputStream))
{
image.Mutate(
delegate(IImageProcessingContext <Rgba32> mutant)
{
mutant.Resize(image.Width / 2, image.Height / 2);
}
);
IImageEncoder enc = null;
if (saveFormat == SaveFormat.Jpg)
{
enc = new SixLabors.ImageSharp.Formats.Jpeg.JpegEncoder();
}
else if (saveFormat == SaveFormat.Png)
{
enc = new SixLabors.ImageSharp.Formats.Png.PngEncoder();
}
else if (saveFormat == SaveFormat.Png)
{
enc = new SixLabors.ImageSharp.Formats.Gif.GifEncoder();
}
else if (saveFormat == SaveFormat.Bmp)
{
enc = new SixLabors.ImageSharp.Formats.Bmp.BmpEncoder();
}
image.Save(outputStream, enc);
} // End Using image
data = outputStream.ToArray();
} // End Using inputStream
} // End Using outputStream
} // End Sub fooo
public static byte[] ResizeImage(string fileName, SaveFormat saveFormat)
{
byte[] data = null;
using (MemoryStream outputStream = new MemoryStream())
{
using (Image <Rgba32> image = Image.Load(fileName))
{
image.Mutate(
delegate(IImageProcessingContext <Rgba32> mutant)
{
mutant.Resize(image.Width / 22, image.Height / 22);
}
);
IImageEncoder enc = null;
if (saveFormat == SaveFormat.Jpg)
{
enc = new SixLabors.ImageSharp.Formats.Jpeg.JpegEncoder();
}
else if (saveFormat == SaveFormat.Png)
{
enc = new SixLabors.ImageSharp.Formats.Png.PngEncoder();
}
else if (saveFormat == SaveFormat.GIF)
{
enc = new SixLabors.ImageSharp.Formats.Gif.GifEncoder();
}
else if (saveFormat == SaveFormat.Bmp)
{
enc = new SixLabors.ImageSharp.Formats.Bmp.BmpEncoder();
}
image.Save(@"D:\myfileformat." + saveFormat.ToString().ToLowerInvariant(), enc);
image.SaveAsJpeg(outputStream);
} // End Using image
data = outputStream.ToArray();
} // End Using outputStream
System.IO.File.WriteAllBytes(@"d:\myfile.jpg", data);
return(data);
} // End Sub ResizeImage
public bool SaveGif(Image <Rgba32> image, string filename, int attempts)
{
try
{
string fname = filename;
if (attempts != 0)
{
fname += "(" + attempts + ")";
}
var outputStream = File.Open(fname + ".gif", FileMode.OpenOrCreate);
var gifEncoder = new SixLabors.ImageSharp.Formats.Gif.GifEncoder();
image.Save(outputStream, gifEncoder);
outputStream.Close();
return(true);
}
catch (IOException e)
{
System.Console.WriteLine("Image saving failed.");
System.Console.WriteLine(e);
return(false);
}
}
public void Save(System.IO.Stream strm, System.Drawing.Imaging.ImageFormat format)
{
SixLabors.ImageSharp.Formats.IImageEncoder enc = null;
if (format == System.Drawing.Imaging.ImageFormat.Jpeg)
{
enc = new SixLabors.ImageSharp.Formats.Jpeg.JpegEncoder();
}
else if (format == System.Drawing.Imaging.ImageFormat.Png)
{
enc = new SixLabors.ImageSharp.Formats.Png.PngEncoder();
}
else if (format == System.Drawing.Imaging.ImageFormat.Gif)
{
enc = new SixLabors.ImageSharp.Formats.Gif.GifEncoder();
}
else if (format == System.Drawing.Imaging.ImageFormat.Bmp)
{
enc = new SixLabors.ImageSharp.Formats.Bmp.BmpEncoder();
}
this.m_image.Save(strm, enc);
}
public static MemoryStream Mark(MemoryStream inStream, string text, string fontPath)
{
text = $"···甘井子区重点车辆管理系统·{text}···";
//首先先判断该图片是否是 gif动画，如果为gif动画不对图片进行改动
using (Image <Rgba32> img = Image.Load(inStream.ToArray(), out IImageFormat format))
{
FontCollection fonts = new FontCollection();
FontFamily fontFamily = fonts.Install(fontPath);
if (fontFamily == null)
{
SystemFonts.TryFind("DejaVu Sans", out fontFamily);
}
if (fontFamily == null)
{
SystemFonts.TryFind("Book", out fontFamily);
}
if (fontFamily == null)
{
SystemFonts.TryFind("DengXian", out fontFamily);
}
if (fontFamily == null)
{
SystemFonts.TryFind("SimSun", out fontFamily);
}
if (fontFamily == null)
{
SystemFonts.TryFind("Arial", out fontFamily);
}
if (fontFamily == null)
{
fontFamily = SystemFonts.Families.First(t => t.Name.Contains("Hei") || t.Name.Contains("黑"));
}
if (fontFamily == null)
{
fontFamily = SystemFonts.Families.First();
}
var font = fontFamily.CreateFont(14f);
using (var img2 = img.Clone(ctx => ctx.ApplyScalingWaterMark(font, text, Rgba32.FromHex("ffffffdd"), 20, false)))
{
IImageEncoder encoder = null;
if (format == ImageFormats.Bmp)
{
encoder = new SixLabors.ImageSharp.Formats.Bmp.BmpEncoder();
}
else if (format == ImageFormats.Jpeg)
{
encoder = new SixLabors.ImageSharp.Formats.Jpeg.JpegEncoder();
}
else if (format == ImageFormats.Png)
{
encoder = new SixLabors.ImageSharp.Formats.Png.PngEncoder();
}
else if (format == ImageFormats.Gif)
{
encoder = new SixLabors.ImageSharp.Formats.Gif.GifEncoder();
}
MemoryStream outStream = new MemoryStream();
img2.Save(outStream, encoder);
outStream.Close();
return(outStream);
}
}
}
