static void ExtractImages(Content content)
{
for (int i = 0; i < content.NumElements; i++)
{
Element e = content.GetElement(i);
if (e is Datalogics.PDFL.Image)
{
Console.WriteLine("Saving an image");
Datalogics.PDFL.Image img = (Datalogics.PDFL.Image)e;
Bitmap bitmap = img.Bitmap;
bitmap.Save("ImageExtraction-extract-out" + (next) + ".bmp", ImageFormat.Bmp);
Datalogics.PDFL.Image newimg = img.ChangeResolution(500);
bitmap = newimg.Bitmap;
bitmap.Save("ImageExtraction-extracted-out" + (next) + ".bmp", ImageFormat.Bmp);
next++;
// The bitmap may be saved in any supported ImageFormat, e.g.:
//bitmap.Save("extract" + i + ".gif", ImageFormat.Gif);
//bitmap.Save("extract" + i + ".png", ImageFormat.Png);
}
else if (e is Container)
{
ExtractImages((e as Container).Content);
}
else if (e is Group)
{
ExtractImages((e as Group).Content);
}
else if (e is Form)
{
ExtractImages((e as Form).Content);
}
}
}
static void Main(string[] args)
{
Console.WriteLine("WriteNChannelTiff Sample:");
using (Library lib = new Library())
{
Console.WriteLine("Initialized the library.");
String sInput = "../../Resources/Sample_Input/sample.pdf";
String sOutput = "../WriteNChannelTiff-out.tif";
if (args.Length > 0)
{
sInput = args[0];
}
if (args.Length > 1)
{
sOutput = args[1];
}
Console.WriteLine("Input file: " + sInput + " writing to " + sOutput);
Document doc = new Document(sInput);
Page pg = doc.GetPage(0);
// Get all inks that are present on the page
List <Ink> inks = (List <Ink>)pg.ListInks();
List <SeparationColorSpace> colorants = new List <SeparationColorSpace>();
// Here we decide, which inks should be drawn
foreach (Ink theInk in inks)
{
// note: if the Ink can't be found in page's resources,
// default tintTransform and alternate will be used
colorants.Add(new SeparationColorSpace(pg, theInk));
}
PageImageParams pip = new PageImageParams();
pip.HorizontalResolution = 300;
pip.VerticalResolution = 300;
Datalogics.PDFL.Image images = pg.GetImage(pg.CropBox, pip, colorants);
// Save images as multi-channeled tiff.
images.Save(sOutput, ImageType.TIFF);
}
}
static void ResampleImages(Content content)
{
int i = 0;
while (i < content.NumElements)
{
Element e = content.GetElement(i);
Console.WriteLine(i + " / " + content.NumElements + " = " + e.GetType().ToString());
if (e is Datalogics.PDFL.Image)
{
Datalogics.PDFL.Image img = (Datalogics.PDFL.Image)e;
try
{
Datalogics.PDFL.Image newimg = img.ChangeResolution(400);
Console.WriteLine("Replacing an image...");
content.AddElement((Element)newimg, i);
content.RemoveElement(i);
Console.WriteLine("Replaced.");
numreplaced++;
}
catch (ApplicationException ex)
{
Console.WriteLine(ex.Message);
}
}
else if (e is Container)
{
Console.WriteLine("Recursing through a Container");
ResampleImages((e as Container).Content);
}
else if (e is Group)
{
Console.WriteLine("Recursing through a Group");
ResampleImages((e as Group).Content);
}
else if (e is Form)
{
Console.WriteLine("Recursing through a Form");
Content formcontent = (e as Form).Content;
ResampleImages(formcontent);
(e as Form).Content = formcontent;
}
i++;
}
}
public static void CreatePageImageBasedOnPhysicalSize(Page pg, string filename, ImageType imgtype, ColorSpace cspace)
{
// Get the dimensions, in pixels, of an image that is
// half the physical size of the page at a resolution of 96 DPI.
// The dimensions will be stored in the PixelWidth and
// PixelHeight fields of the PageImageParams object.
double scalefactor = 0.5;
double resolution = 96.0;
PageImageParams pip = ScalePage(pg, scalefactor, resolution);
pip.ImageColorSpace = cspace;
// Create the image and save it to a file.
// We want to create an image of the entire page, so we'll use the
// page's CropBox as the exportRect.
Datalogics.PDFL.Image img = pg.GetImage(pg.CropBox, pip);
img.Save(filename, imgtype);
Console.WriteLine("Created " + filename + "...");
}
public void Export_Image(Content content, ColorSpace csp, Page pg, int pNum)
{
ImageSaveParams isp;
try
{
isp = new ImageSaveParams();
isp.Compression = CompressionCode.LZW;
PageImageParams pip = new PageImageParams();
pip.ImageColorSpace = csp;
Datalogics.PDFL.Image outImage = pg.GetImage(pg.CropBox, pip);
String filenamevar = "";
pip.RenderIntent = RenderIntent.Saturation;
outImage = pg.GetImage(pg.CropBox, pip);
filenamevar = "ImageEmbedICCProfile-out_sat" + pNum + ".tif";
outImage.Save(filenamevar, exporttype, isp);
pip.RenderIntent = RenderIntent.AbsColorimetric;
outImage = pg.GetImage(pg.CropBox, pip);
filenamevar = "ImageEmbedICCProfile-out_abs" + pNum + ".tif";
outImage.Save(filenamevar, exporttype, isp);
pip.RenderIntent = RenderIntent.Perceptual;
outImage = pg.GetImage(pg.CropBox, pip);
filenamevar = "ImageEmbedICCProfile-out_per" + pNum + ".tif";
outImage.Save(filenamevar, exporttype, isp);
pip.RenderIntent = RenderIntent.RelColorimetric;
outImage = pg.GetImage(pg.CropBox, pip);
filenamevar = "ImageEmbedICCProfile-out_rel" + pNum + ".tif";
outImage.Save(filenamevar, exporttype, isp);
}
catch (Exception ex)
{
Console.WriteLine("Cannot write file: " + ex.Message);
}
}
static void Main(string[] args)
{
Console.WriteLine("RasterizePage Sample:");
using (Library lib = new Library())
{
Console.WriteLine("Initialized the library.");
String sInput = Library.ResourceDirectory + "Sample_Input/ducky.pdf";
String sOutput = "../RasterizePage.pdf";
if (args.Length > 0)
{
sInput = args[0];
}
if (args.Length > 1)
{
sOutput = args[1];
}
Console.WriteLine("Using input file " + sInput + " writing to output with prefix " + sOutput);
Document doc = new Document(sInput);
Page pg = doc.GetPage(0);
/////////////////////////////////////////////////////////
//
// First, we'll make an image that is exactly 400 pixels
// wide at a resolution of 300 DPI.
//
////////////////////////////////////////////////////////
// Create a PageImageParams with the default settings.
PageImageParams pip = new PageImageParams();
pip.PageDrawFlags = DrawFlags.UseAnnotFaces;
// Set the PixelWidth to be exactly 400 pixels.
// We don't need to set the PixelHeight, as the Library will calculate
// this for us automatically based on the PixelWidth and resolution.
//
// If you'd like a specific height, you can specify that too.
// Be aware that the image may end up looking warped if the aspect ratio
// of the specified PixelWidth and PixelHeight don't match the
// aspect ratio of the original.
pip.PixelWidth = 400;
// Since the default resolution is 300 DPI, we don't need to explicitly
// set the HorizontalResolution and VerticalResolution in this case.
//
// Again, we'll create an image of the entire page using the page's
// CropBox as the exportRect. The default ColorSpace is DeviceRGB,
// so the image will be DeviceRGB.
Datalogics.PDFL.Image inputImage = pg.GetImage(pg.CropBox, pip);
inputImage.Save(sOutput + "-400pixel-width.jpg", ImageType.JPEG);
Console.WriteLine("Created " + sOutput + "-400pixel-width.jpg...");
/////////////////////////////////////////////////////////
//
// Next, we'll make a grayscale image that is half the
// physical size of the page at 96 DPI.
//
////////////////////////////////////////////////////////
CreatePageImageBasedOnPhysicalSize(pg, sOutput + "-grayscale-halfsize.jpg", ImageType.JPEG, ColorSpace.DeviceGray);
/////////////////////////////////////////////////////////
//
// Next, we'll make an image that contains just the
// top half of the page at a resolution of 300 DPI.
//
// We'll also use GetBitmap intead of GetImage. If the
// final result is to be a System.Drawing.Bitmap, use
// GetBitmap instead of GetImage. GetBitmap is faster
// because it draws directly into a new System.Drawing.Bitmap
// object and does not incur the time and memory overhead
// of creating a PDF Image object.
//
////////////////////////////////////////////////////////
System.Drawing.Bitmap halfImage = CreateBitmapWithTopHalfOfPage(pg, sOutput + "-tophalf.jpg",
System.Drawing.Imaging.ImageFormat.Jpeg, ColorSpace.DeviceRGB);
}
}
static void Main(string[] args)
{
Console.WriteLine("ImageFromStream Sample:");
using (Library lib = new Library())
{
Console.WriteLine("Initialized the library.");
String bitmapInput = Library.ResourceDirectory + "Sample_Input/Datalogics.bmp";
String jpegInput = Library.ResourceDirectory + "Sample_Input/ducky.jpg";
String docOutput = "../ImageFromStream-out2.pdf";
if (args.Length > 0)
{
bitmapInput = args[0];
}
if (args.Length > 1)
{
jpegInput = args[1];
}
if (args.Length > 2)
{
docOutput = args[2];
}
Console.WriteLine("using bitmap input " + bitmapInput + " and jpeg input " + jpegInput + ". Writing to output " + docOutput);
// Create a .NET MemoryStream object.
// A MemoryStream is used here for demonstration only, but the technique
// works just as well for other streams which support seeking.
System.IO.MemoryStream BitmapStream = new System.IO.MemoryStream();
// Load a bitmap image into the MemoryStream.
System.Drawing.Bitmap BitmapImage = new System.Drawing.Bitmap(bitmapInput);
BitmapImage.Save(BitmapStream, System.Drawing.Imaging.ImageFormat.Bmp);
// Reset the MemoryStream's seek position before handing it to the DLE API,
// which expects the seek position to be at the beginning of the stream.
BitmapStream.Seek(0, System.IO.SeekOrigin.Begin);
// Create the DLE Image object.
Datalogics.PDFL.Image DLEBitmapImage = new Datalogics.PDFL.Image(BitmapStream);
// Save the image to a PNG file.
DLEBitmapImage.Save("ImageFromStream-out.png", ImageType.PNG);
// The following demonstrates reading an image from a Stream and placing it into a document.
// First, create a new Document and add a Page to it.
Document doc = new Document();
doc.CreatePage(Document.BeforeFirstPage, new Rect(0, 0, 612, 792));
// Create a new MemoryStream for a new image file.
System.IO.MemoryStream JpegStream = new System.IO.MemoryStream();
// Load a JPEG image into the MemoryStream.
System.Drawing.Image JpegImage = System.Drawing.Image.FromFile(jpegInput);
JpegImage.Save(JpegStream, System.Drawing.Imaging.ImageFormat.Jpeg);
// An alternative method for resetting the MemoryStream's seek position.
JpegStream.Position = 0;
// Create the DLE Image object and put it in the Document.
// Since the image will be placed in a Document, use the constructor with the optional
// Document parameter to optimize data usage for this image within the Document.
Datalogics.PDFL.Image DLEJpegImage = new Datalogics.PDFL.Image(JpegStream, doc);
Page pg = doc.GetPage(0);
pg.Content.AddElement(DLEJpegImage);
pg.UpdateContent();
doc.Save(SaveFlags.Full, docOutput);
}
}
