// ---------------------------------------------------------------------------
/**
* @see com.itextpdf.text.pdf.parser.RenderListener#renderImage(
* com.itextpdf.text.pdf.parser.ImageRenderInfo)
*/
public void RenderImage(ImageRenderInfo renderInfo)
{
PdfImageObject image = renderInfo.GetImage();
//PdfName filter = (PdfName)image.Get(PdfName.FILTER);
string imageName = string.Format("{0:0000}_{1:0000}.{2}", PageIndex, ImagesList.Count, image.GetImageBytesType().FileExtension);
var pageImageIndex = new PageImageIndex
{
ImageName = imageName,
ImageIndex = ImagesList.Count,
PageIndex = PageIndex
};
var imageType = image.GetImageBytesType();
//if (imageType != PdfImageObject.ImageBytesType.JBIG2)
//{
//var bmp = image.GetDrawingImage();
// Write image to file
string pathToSave = string.Format(@"{0}\{1}", OutputPath, imageName);
//bmp.Save(string.Format(pathToSave));
// bmp.Dispose();
// Sometime gdi+ error happen. We must write byte directly to disk
if (!Directory.Exists(OutputPath))
{
Directory.CreateDirectory(OutputPath);
}
var bytes = image.GetImageAsBytes();
File.WriteAllBytes(pathToSave, bytes);
ImagesList.Add(pageImageIndex, null);
//}
}
// ---------------------------------------------------------------------------
/**
* @see com.itextpdf.text.pdf.parser.RenderListener#renderImage(
* com.itextpdf.text.pdf.parser.ImageRenderInfo)
*/
public void RenderImage(ImageRenderInfo renderInfo)
{
try {
PdfImageObject image = renderInfo.GetImage();
if (image == null
/*
* do not attempt to parse => jbig2 decoder not fully implemented.
* THE JAVA EXAMPLE INCORRECTLY CREATES A CORRUPT JBIG2 IMAGE
* BECAUSE THERE IS NO EXPLICIT CHECK. I POSTED TWICE TO THE MAILING
* LIST, SINCE VERSION 5.1.3 BUT THE ERROR HAS NOT BEEN CORRECTED.
*/
|| image.GetImageBytesType() == PdfImageObject.ImageBytesType.JBIG2
)
{
return;
}
_imageNames.Add(string.Format(
"Image{0}.{1}",
renderInfo.GetRef().Number, image.GetFileType()
));
_myImages.Add(image.GetImageAsBytes());
}
catch {
// pass through any other unsupported image types
}
}
public void RenderImage(ImageRenderInfo renderInfo)
{
try {
PdfImageObject image = renderInfo.GetImage();
if (image == null || image.GetImageBytesType() == PdfImageObject.ImageBytesType.JBIG2)
{
return;
}
_imageNames.Add(string.Format("Image{0}.{1}", renderInfo.GetRef().Number, image.GetFileType()));
_myImages.Add(image.GetImageAsBytes());
}
catch
{
}
}
public void RenderImage(ImageRenderInfo renderInfo)
{
PdfImageObject pdfimage = renderInfo.GetImage();
string pp = pdfimage.GetImageBytesType().FileExtension;
string imgtp = pdfimage.GetFileType();
if ("jpg".Equals(imgtp, StringComparison.OrdinalIgnoreCase) ||
"png".Equals(imgtp, StringComparison.OrdinalIgnoreCase) ||
"gif".Equals(imgtp, StringComparison.OrdinalIgnoreCase))
{
}
else
{
imgtp = pp;
imgtp = "png";
}
String imageFileName = String.Format("{0}_{1:000}_{2}.{3}", _imgname, _currentPage, _imgNo, imgtp);
// imageFileName= _outputFolder+"\\"+_imgname+_currentPage.ToString("_000")+"_"+_imgNo+".png";
imageFileName = _outputFolder + "\\" + imageFileName;
try{
using (Image dotnetImg = pdfimage.GetDrawingImage())
{
if (dotnetImg != null)
{
if (_pageRotation == 270)
{
dotnetImg.RotateFlip(RotateFlipType.Rotate270FlipNone);
}
else if (_pageRotation == 90)
{
dotnetImg.RotateFlip(RotateFlipType.Rotate90FlipNone);
}
else if (_pageRotation == 180)
{
dotnetImg.RotateFlip(RotateFlipType.Rotate180FlipNone);
}
dotnetImg.Save(imageFileName);
}
}
}catch (Exception ee) {
System.Diagnostics.Debug.WriteLine(ee.StackTrace);
}
_imgNo++;
}
/// <summary>
/// Gets image from PDF and compresses it - Found on StackOverflow - asis
/// </summary>
/// <param name="reader"></param>
/// <param name="quality"></param>
public static void ReduceResolution(PdfReader reader, long quality)
{
int n = reader.XrefSize;
for (int i = 0; i < n; i++)
{
PdfObject obj = reader.GetPdfObject(i);
if (obj == null || !obj.IsStream())
{
continue;
}
PdfDictionary dict = (PdfDictionary)PdfReader.GetPdfObject(obj);
PdfName subType = (PdfName)PdfReader.GetPdfObject(
dict.Get(PdfName.SUBTYPE)
);
if (!PdfName.IMAGE.Equals(subType))
{
continue;
}
PRStream stream = (PRStream)obj;
try
{
PdfImageObject image = new PdfImageObject(stream);
//PdfName filter = (PdfName)image.Get(PdfName.FILTER);
//if (
// PdfName.JBIG2DECODE.Equals(filter)
// || PdfName.JPXDECODE.Equals(filter)
// || PdfName.CCITTFAXDECODE.Equals(filter)
// || PdfName.FLATEDECODE.Equals(filter)
//) continue;
System.Drawing.Image img = image.GetDrawingImage();
if (img == null)
{
continue;
}
var ll = image.GetImageBytesType();
int width = img.Width;
int height = img.Height;
using (System.Drawing.Bitmap dotnetImg =
new System.Drawing.Bitmap(img))
{
// set codec to jpeg type => jpeg index codec is "1"
System.Drawing.Imaging.ImageCodecInfo codec =
System.Drawing.Imaging.ImageCodecInfo.GetImageEncoders()[1];
// set parameters for image quality
System.Drawing.Imaging.EncoderParameters eParams =
new System.Drawing.Imaging.EncoderParameters(1);
eParams.Param[0] =
new System.Drawing.Imaging.EncoderParameter(
System.Drawing.Imaging.Encoder.Quality, quality
);
using (MemoryStream msImg = new MemoryStream())
{
dotnetImg.Save(msImg, codec, eParams);
msImg.Position = 0;
stream.SetData(msImg.ToArray());
stream.SetData(
msImg.ToArray(), false, PRStream.BEST_COMPRESSION
);
stream.Put(PdfName.TYPE, PdfName.XOBJECT);
stream.Put(PdfName.SUBTYPE, PdfName.IMAGE);
stream.Put(PdfName.FILTER, image.Get(PdfName.FILTER));
stream.Put(PdfName.FILTER, PdfName.DCTDECODE);
stream.Put(PdfName.WIDTH, new PdfNumber(width));
stream.Put(PdfName.HEIGHT, new PdfNumber(height));
stream.Put(PdfName.BITSPERCOMPONENT, new PdfNumber(8));
stream.Put(PdfName.COLORSPACE, PdfName.DEVICERGB);
}
}
}
catch
{
// throw;
// iText[Sharp] can't handle all image types...
}
finally
{
// may or may not help
reader.RemoveUnusedObjects();
}
}
}
// ---------------------------------------------------------------------------
/**
* @see com.itextpdf.text.pdf.parser.RenderListener#renderImage(
* com.itextpdf.text.pdf.parser.ImageRenderInfo)
*/
public void RenderImage(ImageRenderInfo renderInfo)
{
PdfImageObject image = renderInfo.GetImage();
//PdfName filter = (PdfName)image.Get(PdfName.FILTER);
_imageNames.Add(string.Format("{0:0000}_{1:0000}.{2}", PageIndex, _imageNames.Count, image.GetImageBytesType().FileExtension));
_ImageBytes.Add(image.GetImageAsBytes());
}