using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Drawing;
using System.IO;
using System.Drawing.Imaging;
using System.Drawing.Drawing2D;
namespace Skynet.ImageProsses
{
public class ImageProsses
{
//Overload for crop that default starts top left of the image.
public static Image CropImage(System.Drawing.Image Image, int Height, int Width)
{
return CropImage(Image, Height, Width, 0, 0);
}
//The crop image sub
public static System.Drawing.Image CropImage(System.Drawing.Image Image, int Height, int Width, int StartAtX, int StartAtY)
{
Image outimage;
MemoryStream mm = null;
try
{
//check the image height against our desired image height
if (Image.Height < Height)
{
Height = Image.Height;
}
if (Image.Width < Width)
{
Width = Image.Width;
}
//create a bitmap window for cropping
Bitmap bmPhoto = new Bitmap(Width, Height, PixelFormat.Format24bppRgb);
bmPhoto.SetResolution(72, 72);
//create a new graphics object from our image and set properties
Graphics grPhoto = Graphics.FromImage(bmPhoto);
grPhoto.SmoothingMode = SmoothingMode.AntiAlias;
grPhoto.InterpolationMode = InterpolationMode.HighQualityBicubic;
grPhoto.PixelOffsetMode = PixelOffsetMode.HighQuality;
//now do the crop
grPhoto.DrawImage(Image, new Rectangle(0, 0, Width, Height), StartAtX, StartAtY, Width, Height, GraphicsUnit.Pixel);
// Save out to memory and get an image from it to send back out the method.
mm = new MemoryStream();
bmPhoto.Save(mm, System.Drawing.Imaging.ImageFormat.Jpeg);
Image.Dispose();
bmPhoto.Dispose();
grPhoto.Dispose();
outimage = Image.FromStream(mm);
return outimage;
}
catch (Exception ex)
{
throw new Exception("Error cropping image, the error was: " + ex.Message);
}
}
//Hard resize attempts to resize as close as it can to the desired size and then crops the excess
public static System.Drawing.Image HardResizeImage(int Width, int Height, System.Drawing.Image Image)
{
int width = Image.Width;
int height = Image.Height;
Image resized = null;
if (Width > Height)
{
resized = ResizeImage(Width, Width, Image);
}
else
{
resized = ResizeImage(Height, Height, Image);
}
Image output = CropImage(resized, Height, Width);
//return the original resized image
return output;
}
//Image resizing
public static System.Drawing.Image ResizeImage(int maxWidth, int maxHeight, System.Drawing.Image Image)
{
int width = Image.Width;
int height = Image.Height;
if (width > maxWidth || height > maxHeight)
{
//The flips are in here to prevent any embedded image thumbnails -- usually from cameras
//from displaying as the thumbnail image later, in other words, we want a clean
//resize, not a grainy one.
Image.RotateFlip(System.Drawing.RotateFlipType.Rotate180FlipX);
Image.RotateFlip(System.Drawing.RotateFlipType.Rotate180FlipX);
float ratio = 0;
if (width > height)
{
ratio = (float)width / (float)height;
width = maxWidth;
height = Convert.ToInt32(Math.Round((float)width / ratio));
}
else
{
ratio = (float)height / (float)width;
height = maxHeight;
width = Convert.ToInt32(Math.Round((float)height / ratio));
}
//return the resized image
return Image.GetThumbnailImage(width, height, null, IntPtr.Zero);
}
//return the original resized image
return Image;
}
public Image ResizeImage(Image FullsizeImage, int NewWidth, int MaxHeight, bool OnlyResizeIfWider = true)
{
// Prevent using images internal thumbnail
FullsizeImage.RotateFlip(System.Drawing.RotateFlipType.Rotate180FlipNone);
FullsizeImage.RotateFlip(System.Drawing.RotateFlipType.Rotate180FlipNone);
if (OnlyResizeIfWider)
{
if (FullsizeImage.Width <= NewWidth)
{
NewWidth = FullsizeImage.Width;
}
}
int NewHeight = FullsizeImage.Height * NewWidth / FullsizeImage.Width;
if (NewHeight > MaxHeight)
{
// Resize with height instead
NewWidth = FullsizeImage.Width * MaxHeight / FullsizeImage.Height;
NewHeight = MaxHeight;
}
Image NewImage = FullsizeImage.GetThumbnailImage(NewWidth, NewHeight, null, IntPtr.Zero);
// Clear handle to original file so that we can overwrite it if necessary
FullsizeImage.Dispose();
// Save resized picture
return NewImage;
}
}
}
meka dakkama chain paninwa.thnkz macho.but mage eke me widiyata neme system eka yanne.eke aniwa image eka save karalai wada karanna ganne.bt samahara than nm similar ynwa
