/// <summary>
/// Обрезка IImage прямоугольной областью
/// </summary>
/// <param name="img"></param>
/// <param name="destRect"></param>
/// <returns></returns>
public static GDI.IImage CropIImage(GDI.IImage img, Rectangle destRect)
{
GDI.IImage retImg;
var srcBmp = CreateBitmapFromIImage((IImage)img);
var destBmp = new Bitmap(destRect.Width, destRect.Height);
var gR = Graphics.FromImage(destBmp);
gR.DrawImage(srcBmp, 0, 0, destRect, GraphicsUnit.Pixel);
gR.Dispose();
srcBmp.Dispose();
var mStream = new MemoryStream();
destBmp.Save(mStream, ImageFormat.Png);
destBmp.Dispose();
var bufSize = (uint)mStream.Length;
byte[] buffer = mStream.GetBuffer();
IntPtr bytes = Marshal.AllocHGlobal(buffer.Length);
Marshal.Copy(buffer, 0, bytes, buffer.Length);
ImagingFactory.CreateImageFromBuffer(bytes, (uint)buffer.Length, GDI.BufferDisposalFlag.BufferDisposalFlagGlobalFree, out retImg);
return(retImg);
}
/// <summary>
/// Загрузка IImage из файла
/// </summary>
/// <param name="file"></param>
/// <param name="image"></param>
/// <param name="imageSize"></param>
public static void LoadImageFromFile(string file, out GDI.IImage image, out Size imageSize)
{
GDI.ImageInfo newImageInfo;
ImagingFactory.CreateImageFromFile(file, out image);
image.GetImageInfo(out newImageInfo);
imageSize = new Size((int)newImageInfo.Width, (int)newImageInfo.Height);
}
/// <summary>
/// Загрузка IImage из файла в память (без привязки к файлу)
/// </summary>
/// <param name="file"></param>
/// <param name="image"></param>
public static void LoadImageFromFileIntoMemory(string file, out GDI.IImage image)
{
FileStream newFileStream = new FileStream(file, FileMode.Open);
MemoryStream newMemoryStream = new MemoryStream((int)newFileStream.Length);
CopyStream(newFileStream, newMemoryStream);
byte[] buffer = newMemoryStream.GetBuffer();
IntPtr bytes = Marshal.AllocHGlobal(buffer.Length);
Marshal.Copy(buffer, 0, bytes, buffer.Length);
ImagingFactory.CreateImageFromBuffer(bytes, (uint)buffer.Length, GDI.BufferDisposalFlag.BufferDisposalFlagGlobalFree, out image);
newFileStream.Close();
}
/// <summary>
/// Сохраняет данные IImage в файл
/// </summary>
/// <param name="image"></param>
/// <param name="file"></param>
public static void SaveImageFromMemory(GDI.IImage image, string file)
{
GDI.ImageInfo newImageInfo;
GDI.IBitmapImage newIBitmapImage;
Bitmap newBitmap;
image.GetImageInfo(out newImageInfo);
ImagingFactory.CreateBitmapFromImage(image, newImageInfo.Width, newImageInfo.Height, PixelFormatID.PixelFormat24bppRGB, DefaultInterpolation, out newIBitmapImage);
newBitmap = ImageUtils.IBitmapImageToBitmap((IBitmapImage)newIBitmapImage);
newBitmap.Save(file, ImageFormat.Jpeg);
Marshal.FinalReleaseComObject(newIBitmapImage);
newBitmap.Dispose();
}
/// <summary>
/// Загрузка IImage из файла
/// </summary>
/// <param name="file"></param>
/// <param name="image"></param>
public static void LoadImageFromFile(string file, out GDI.IImage image)
{
ImagingFactory.CreateImageFromFile(file, out image);
}
