public static bool MakeThumbnailImage(
string fileName,
string newFileName,
int maxWidth,
int maxHeight,
int cropWidth,
int cropHeight,
int X,
int Y)
{
Image image = Image.FromStream((Stream) new MemoryStream(System.IO.File.ReadAllBytes(fileName)));
Bitmap bitmap = new Bitmap(cropWidth, cropHeight);
try
{
using (Graphics graphics = Graphics.FromImage((Image)bitmap))
{
graphics.InterpolationMode = InterpolationMode.HighQualityBicubic;
graphics.SmoothingMode = SmoothingMode.AntiAlias;
graphics.PixelOffsetMode = PixelOffsetMode.HighQuality;
graphics.Clear(Color.Transparent);
graphics.DrawImage(image, new Rectangle(0, 0, cropWidth, cropHeight), X, Y, cropWidth, cropHeight, GraphicsUnit.Pixel);
Thumbnail.SaveImage((Image) new Bitmap((Image)bitmap, maxWidth, maxHeight), newFileName, Thumbnail.GetCodecInfo("image/" + Thumbnail.GetFormat(newFileName).ToString().ToLower()));
return(true);
}
}
catch (Exception ex)
{
throw ex;
}
finally
{
image.Dispose();
bitmap.Dispose();
}
}
public static void MakeSquareImage(string fileName, string newFileName, int newSize)
{
Thumbnail.MakeSquareImage(Image.FromFile(fileName), newFileName, newSize);
}
public static void MakeThumbnailImage(
string fileName,
string newFileName,
int width,
int height,
string mode)
{
Image image = Image.FromFile(fileName);
int width1 = width;
int height1 = height;
int x = 0;
int y = 0;
int width2 = image.Width;
int height2 = image.Height;
switch (mode)
{
case "HW":
if ((double)image.Width / (double)image.Height > (double)width1 / (double)height1)
{
width2 = image.Width;
height2 = image.Width * height / width1;
x = 0;
y = (image.Height - height2) / 2;
break;
}
height2 = image.Height;
width2 = image.Height * width1 / height1;
y = 0;
x = (image.Width - width2) / 2;
break;
case "W":
height1 = image.Height * width / image.Width;
break;
case "H":
width1 = image.Width * height / image.Height;
break;
case "Cut":
if ((double)image.Width / (double)image.Height > (double)width1 / (double)height1)
{
height2 = image.Height;
width2 = image.Height * width1 / height1;
y = 0;
x = (image.Width - width2) / 2;
break;
}
width2 = image.Width;
height2 = image.Width * height / width1;
x = 0;
y = (image.Height - height2) / 2;
break;
}
Bitmap bitmap = new Bitmap(width1, height1);
try
{
Graphics graphics = Graphics.FromImage((Image)bitmap);
graphics.InterpolationMode = InterpolationMode.HighQualityBicubic;
graphics.SmoothingMode = SmoothingMode.AntiAlias;
graphics.PixelOffsetMode = PixelOffsetMode.HighQuality;
graphics.Clear(Color.White);
graphics.DrawImage(image, new Rectangle(0, 0, width1, height1), new Rectangle(x, y, width2, height2), GraphicsUnit.Pixel);
Thumbnail.SaveImage((Image)bitmap, newFileName, Thumbnail.GetCodecInfo("image/" + Thumbnail.GetFormat(newFileName).ToString().ToLower()));
}
catch (Exception ex)
{
throw ex;
}
finally
{
image.Dispose();
bitmap.Dispose();
}
}
public static void MakeSquareImage(Image image, string newFileName, int newSize)
{
int num = 0;
int width = image.Width;
int height = image.Height;
num = width <= height ? width : height;
Bitmap bitmap = new Bitmap(newSize, newSize);
try
{
Graphics graphics = Graphics.FromImage((Image)bitmap);
graphics.InterpolationMode = InterpolationMode.HighQualityBicubic;
graphics.SmoothingMode = SmoothingMode.AntiAlias;
graphics.PixelOffsetMode = PixelOffsetMode.HighQuality;
graphics.Clear(Color.Transparent);
if (width < height)
{
graphics.DrawImage(image, new Rectangle(0, 0, newSize, newSize), new Rectangle(0, (height - width) / 2, width, width), GraphicsUnit.Pixel);
}
else
{
graphics.DrawImage(image, new Rectangle(0, 0, newSize, newSize), new Rectangle((width - height) / 2, 0, height, height), GraphicsUnit.Pixel);
}
Thumbnail.SaveImage((Image)bitmap, newFileName, Thumbnail.GetCodecInfo("image/" + Thumbnail.GetFormat(newFileName).ToString().ToLower()));
}
finally
{
image.Dispose();
bitmap.Dispose();
}
}
