public GD(FileType type, string filename)
{
IntPtr imageHandle;
IntPtr fileHandle = GDImport.fopen(filename, "rb");
if (fileHandle == IntPtr.Zero)
{
throw new ApplicationException(filename + " not found.");
}
switch (type)
{
case FileType.Jpeg:
imageHandle = GDImport.gdImageCreateFromJpeg(fileHandle);
break;
case FileType.Png:
imageHandle = GDImport.gdImageCreateFromPng(fileHandle);
break;
case FileType.Gd:
imageHandle = GDImport.gdImageCreateFromGd(fileHandle);
break;
case FileType.Gd2:
imageHandle = GDImport.gdImageCreateFromGd2(fileHandle);
break;
case FileType.WBMP:
imageHandle = GDImport.gdImageCreateFromWBMP(fileHandle);
break;
case FileType.Xbm:
imageHandle = GDImport.gdImageCreateFromXbm(fileHandle);
break;
case FileType.Xpm:
imageHandle = GDImport.gdImageCreateFromXpm(fileHandle);
break;
case FileType.Gif:
imageHandle = GDImport.gdImageCreateFromGif(fileHandle);
break;
default:
GDImport.fclose(fileHandle);
throw new ApplicationException(type + " is unknown import type.");
}
GDImport.fclose(fileHandle);
if (imageHandle == IntPtr.Zero)
{
throw new ApplicationException("ImageCreateFrom failed.");
}
this.handle = new HandleRef(this, imageHandle);
//this.imageData = (GDImage) Marshal.PtrToStructure( this.Handle, typeof( GDImage ) );
}
// Parameter:
// PNG - level of compression ( 0 - no compression ... )
// Jpeg - quality
public bool Save(FileType type, string filename, int parameter)
{
IntPtr fileHandle = GDImport.fopen(filename, "wb");
if (fileHandle == IntPtr.Zero)
{
return(false);
}
switch (type)
{
case FileType.Jpeg:
GDImport.gdImageJpeg(this.Handle, fileHandle, parameter);
break;
case FileType.Png:
GDImport.gdImagePngEx(this.Handle, fileHandle, parameter);
break;
case FileType.Gd:
GDImport.gdImageGd(this.Handle, fileHandle);
break;
case FileType.Gd2:
GDImport.gdImageGd2(this.Handle, fileHandle);
break;
case FileType.WBMP:
GDImport.gdImageWBMP(this.Handle, parameter, fileHandle);
break;
case FileType.Gif:
GDImport.gdImageGif(this.Handle, fileHandle);
break;
case FileType.Xbm:
//gdImageXbm( this.Handle, fileHandle );
//break;
case FileType.Xpm:
//gdImageXpm( this.Handle, fileHandle );
//break;
throw new ApplicationException(type + " not implemented.");
default:
GDImport.fclose(fileHandle);
throw new ApplicationException(type + " is an unknown file type.");
}
GDImport.fclose(fileHandle);
return(true);
}