public static string GetResizedImage(string imageFile, int width, int height, bool stretch = false, ImageType imageType = ImageType.JPG, bool fillArea = false, HAlignment_Enum hAlignment = HAlignment_Enum.Center, VAlignment_Enum vAlignment = VAlignment_Enum.Center, int jpegQuality = 100)
{
var finImage = "";
var cDir = Directory.GetCurrentDirectory();
var fi = new FileInfo(Path.Combine(cDir, imageFile));
if (fi.Exists)
{
var fin = WebPathAndNameCached(fi, width, height, stretch, imageType, fillArea, hAlignment, vAlignment, jpegQuality);
//Dim fi2 = GetFileInfo(fi, fi.Directory.FullName & "\TempFiles\" & fi.FileNameWithoutExtension() & "_thumbnail_" & width & "_" & height, "png")
//If Not fi2.Directory.Exists Then
// fi2.Directory.Create()
//End If
//If Not fi2.Exists OrElse fi2.LastWriteTime.AddMinutes(15) < fi.LastWriteTime Then
// SaveResizedImage(fi, fi2, width, height, False, False, HAlignment_Enum.Center, VAlignment_Enum.Center)
//End If
var f = fi.FullName.Replace(imageFile.Replace("//", "/").Replace("/", "\\"), "");
var f2 = fin.FullName.Replace(f, "");
finImage = f2.Replace("\\", "/");
}
return(finImage);
}
public static System.IO.FileInfo WebPathAndNameCached(FileInfo BaseFile, int Width, int Height, bool Stretch, ImageType ImageType, bool FillArea, HAlignment_Enum HAlignment, VAlignment_Enum VAlignment, int jpegQuality = 100)
{
System.IO.FileInfo FI2 = default(System.IO.FileInfo);
var FI = BaseFile;
var Fname = FileNameWithoutExtension(FI);
var Extension = FI.Extension;
if (ImageType != ImageType.None)
{
Extension = ImageType.ToString();
}
else
{
try
{
ImageType = (ImageType)Enum.Parse(typeof(ImageType), Extension.Replace(".", "").ToUpper());
}
catch (Exception exp)
{
}
}
if (ImageType == ImageType.None)
{
ImageType = ImageType.JPG;
}
if (Width > 0)
{
//If Width > 1024 Then Width = 1024
Fname = Fname + "_" + Width;
}
else if (Height > 0)
{
//If Height > 1024 Then Height = 1024
Fname = Fname + "_0_" + Height;
}
if (Height > 0 && Width > 0)
{
//If Height > 1024 Then Height = 1024
Fname = Fname + "_" + Height;
}
//If Not Stretch.HasValue Then
// Stretch = False
//End If
if (Stretch)
{
Fname = Fname + "_Stretch";
}
if (FillArea)
{
Fname = Fname + "_FillArea";
}
if (HAlignment != HAlignment_Enum.Center)
{
Fname = Fname + "_H_" + HAlignment.ToString();
}
if (VAlignment != VAlignment_Enum.Center)
{
Fname = Fname + "_V_" + VAlignment.ToString();
}
if (ImageType != ImageType.None)
{
Extension = "." + ImageType.ToString();
}
FI2 = new System.IO.FileInfo(FI.DirectoryName + "/Temp/" + Fname + Extension);
if (!FI2.Directory.Exists)
{
FI2.Directory.Create();
}
if (!(FI2.Exists && (FI.LastWriteTime <= FI2.LastWriteTime || FI.FullName.ToUpper() == FI2.FullName.ToUpper())))
{
SaveResizedImage(FI, FI2, (Width > 0 ? (int?)Width : null), (Height > 0 ? (int?)Height : null), Stretch, FillArea, HAlignment, VAlignment, jpegQuality);
FI2.Refresh();
}
return(FI2);
}
public static void SaveResizedImage(System.IO.FileInfo FromFile, System.IO.FileInfo ToFile, Nullable <int> Width, Nullable <int> Height, bool Stretch, bool FillArea, HAlignment_Enum HAlignment, VAlignment_Enum VAlignment, int jpegQuality = 100)
{
try
{
if (ToFile.Exists && ToFile.FullName.ToUpper() != FromFile.FullName.ToUpper())
{
ToFile.Delete();
}
var Extension = ToFile.Extension.Replace(".", "");
bool UseTransparent = false;
if (Extension.ToUpper() == "SVG")
{
FromFile.CopyTo(ToFile.FullName);
return;
}
if (Extension.ToUpper() == "PNG")
{
UseTransparent = true;
}
if ((Extension.ToUpper() == "GIF"))
{
UseTransparent = true;
var img = Image.Load(FromFile.FullName);
var frames = img.Frames.Count;
if ((frames > 1))
{
FromFile.CopyTo(ToFile.FullName);
return;
}
}
if (!Width.HasValue && !Height.HasValue)
{
FromFile.CopyTo(ToFile.FullName);
return;
}
using (var Ti = Image.Load(FromFile.FullName)) {
bool BothSet = true;
if (Width.HasValue & !Height.HasValue)
{
Height = Ti.Height / Ti.Width * Width;
BothSet = false;
}
if (Height.HasValue & !Width.HasValue)
{
Width = Ti.Width / Ti.Height * Height;
BothSet = false;
}
using (var FT = new Image <Rgba32>(Width ?? 0, Height ?? 0))
{
if (UseTransparent)
{
FT.Mutate(ctx => ctx.Fill(Color.Transparent));
}
else
{
FT.Mutate(ctx => ctx.Fill(Color.WhiteSmoke));
}
if (BothSet)
{
var NWidth = Width;
var NHeight = Height;
var dx = Width / Ti.Width;
var dy = Height / Ti.Height;
bool Comp = (dx < dy);
var Ratio = Ti.Width / Ti.Height;
//If Ratio > 1 Then Ratio = 1 / Ratio
if (!Stretch)
{
if (FillArea)
{
Comp = !Comp;
}
if (Comp)
{
var y = (int)(dx * Ti.Height);
var T = (int)((Height - y) / 2);
if (VAlignment == VAlignment_Enum.Top)
{
T = 0;
}
if (VAlignment == VAlignment_Enum.Bottom)
{
T = (Height ?? 0) - y;
}
Ti.Mutate((ctx) => ctx.Resize(new Size(Width ?? 0, y)));
FT.Mutate(ctx => ctx.DrawImage(Ti, new Point(0, T), 1));
//Gr = System.Drawing.Graphics.FromImage(FT);
//Gr.DrawImage(Ti, new Drawing.Rectangle(0, T, Width, y));
//Gr.Dispose();
//Ti = FT;
}
else
{
var x = (int)(dy * Ti.Width);
var L = (int)((Width - x) / 2);
if (HAlignment == HAlignment_Enum.Left)
{
L = 0;
}
if (HAlignment == HAlignment_Enum.Right)
{
L = (Width ?? 0) - x;
}
Ti.Mutate((ctx) => ctx.Resize(new Size(x, Height ?? 0)));
FT.Mutate(ctx => ctx.DrawImage(Ti, new Point(L, 0), 1));
//FT.Mutate(ctx => ctx.DrawImage(Ti, 1, new Size(x, Height ?? 0), new Point(L, 0)));
//Gr = System.Drawing.Graphics.FromImage(FT);
//Gr.DrawImage(Ti, new Drawing.Rectangle(L, 0, x, Height));
////Gr.DrawImageUnscaled(Ti, New Drawing.Point(0, 0))
//Gr.Dispose();
//Ti = FT;
}
}
else
{
Ti.Mutate((ctx) => ctx.Resize(new Size(Width ?? 0, Height ?? 0)));
FT.Mutate(ctx => ctx.DrawImage(Ti, new Point(0, 0), 1));
//FT.Mutate(ctx => ctx.DrawImage(Ti, 1, new Size(Width ?? 0, Height ?? 0), new Point(0, 0)));
//Gr = System.Drawing.Graphics.FromImage(FT);
//Gr.DrawImage(Ti, new Drawing.Rectangle(0, 0, Width, Height));
//Gr.Dispose();
//Ti = FT;
}
}
else
{
Ti.Mutate((ctx) => ctx.Resize(new Size(Width ?? 0, Height ?? 0)));
FT.Mutate(ctx => ctx.DrawImage(Ti, new Point(0, 0), 1));
//FT.Mutate(ctx => ctx.DrawImage(Ti, 1, new Size(Width ?? 0, Height ?? 0), new Point(0, 0)));
//Gr = System.Drawing.Graphics.FromImage(FT);
//Gr.DrawImage(Ti, new Drawing.Rectangle(0, 0, Width, Height));
//Gr.Dispose();
//Ti = FT;
}
if (ToFile.Exists && ToFile.FullName.ToUpper() == FromFile.FullName.ToUpper())
{
ToFile.Delete();
}
//FT.Save(ToFile.FullName);
if (Extension.ToUpper() == "JPG" | Extension.ToUpper() == "JPEG")
{
//// Encoder parameter for image quality
//EncoderParameter qualityParam = new EncoderParameter(Encoder.Quality, jpegQuality);
//// Jpeg image codec
//ImageCodecInfo jpegCodec = GetEncoderInfo("image/jpeg");
//EncoderParameters encoderParams = new EncoderParameters(1);
//encoderParams.Param(0) = qualityParam;
var encoder = new JpegEncoder()
{
Quality = jpegQuality
};
FT.Save(ToFile.FullName, encoder);
//Ti.Save(ToFile.FullName, Drawing.Imaging.ImageFormat.Jpeg)
}
if (Extension.ToUpper() == "PNG")
{
FT.Save(ToFile.FullName);
}
if (Extension.ToUpper() == "BMP")
{
FT.Save(ToFile.FullName);
}
if (Extension.ToUpper() == "GIF")
{
FT.Save(ToFile.FullName);
}
if (Extension.ToUpper() == "TGA")
{
FT.Save(ToFile.FullName);
}
}
}
}
catch (Exception ex)
{
int i = 1;
}
}
