static void Main(string[] args)
{
Console.WriteLine("FlattenTransparency sample:");
using (Library lib = new Library())
{
String sInput1 = "../../Resources/Sample_Input/trans_1page.pdf";
String sOutput1 = "../FlattenTransparency-out1.pdf";
String sInput2 = "../../Resources/Sample_Input/trans_multipage.pdf";
String sOutput2 = "../FlattenTransparency-out2.pdf";
if (args.Length > 0)
{
sInput1 = args[0];
}
if (args.Length > 1)
{
sInput2 = args[1];
}
if (args.Length > 2)
{
sOutput1 = args[2];
}
if (args.Length > 3)
{
sOutput2 = args[3];
}
// Open a document with a single page.
Document doc1 = new Document(sInput1);
// Verify that the page has transparency. The parameter indicates
// whether to include the appearances of annotations or not when
// checking for transparency.
Page pg1 = doc1.GetPage(0);
bool isTransparent = pg1.HasTransparency(true);
// If there is transparency, flatten the document.
if (isTransparent)
{
// Flattening the document will check each page for transparency.
// If a page has transparency, DLE will create a new, flattened
// version of the page and replace the original page with the
// new one. Because of this, make sure to dispose of outstanding Page objects
// that refer to pages in the Document before calling flattenTransparency.
pg1.Dispose();
doc1.FlattenTransparency();
Console.WriteLine("Flattened single page document " + sInput1 + " as " + sOutput1 + ".");
doc1.Save(SaveFlags.Full, sOutput1);
}
// Open a document with multiple pages.
Document doc2 = new Document(sInput2);
// Iterate over the pages of the document and find the first page that has
// transparency.
isTransparent = false;
int totalPages = doc2.NumPages;
int pageCounter = 0;
while (!isTransparent && pageCounter <= totalPages)
{
Page pg = doc2.GetPage(pageCounter);
if (pg.HasTransparency(true))
{
isTransparent = true;
// Explicitly delete the page here, to ensure the reference is gone before we
// attempt to flatten the document.
pg.Dispose();
break;
}
pageCounter++;
}
if (isTransparent)
{
// Set up some parameters for the flattening.
FlattenTransparencyParams ftParams = new FlattenTransparencyParams();
// The Quality setting indicates the percentage (0%-100%) of vector information
// that is preserved. Lower values result in higher rasterization of vectors.
ftParams.Quality = 50;
// Flatten transparency in the document, starting from the first page
// that has transparency.
doc2.FlattenTransparency(ftParams, pageCounter, Document.LastPage);
Console.WriteLine("Flattened a multi-page document " + sInput2 + " as " + sOutput2 + ".");
doc2.Save(SaveFlags.Full, sOutput2);
}
}
}
static void Main(string[] args)
{
Console.WriteLine("ConvertTextToOutlines sample:");
using (Library lib = new Library())
{
String sInput1 = Library.ResourceDirectory + "Sample_Input/TextSearch.pdf";
String sOutput1 = "../TextSearch-converted.pdf";
if (args.Length > 0)
{
sInput1 = args[0];
}
if (args.Length > 1)
{
sOutput1 = args[1];
}
// Open a document with multiple pages.
Document doc = new Document(sInput1);
// Iterate over the pages of the document and add a translucent element to the pages
int totalPages = doc.NumPages;
int pageCounter = 0;
while (pageCounter < totalPages)
{
Page pg = doc.GetPage(pageCounter);
Path tinyLine = new Path();
GraphicState gs = tinyLine.GraphicState;
gs.FillColor = new Color(1.0, 1.0, 1.0); // White
gs.StrokeColor = new Color(1.0, 1.0, 1.0); // white
tinyLine.PaintOp = PathPaintOpFlags.Stroke;; // PathPaintOpFlags.EoFill
gs.Width = 1.0;
ExtendedGraphicState xgs = new ExtendedGraphicState();
xgs.BlendMode = BlendMode.Normal;
xgs.OpacityForStroking = 0.5;
xgs.OpacityForOtherThanStroking = 0.5;
gs.ExtendedGraphicState = xgs;
tinyLine.GraphicState = gs;
Point Origin = new Point(0.0, 0.0);
Point Point1 = new Point(1.0, 1.0); // line that goes from 0,0 to 1,1
tinyLine.MoveTo(Origin);
tinyLine.AddLine(Point1);
tinyLine.ClosePath();
pg.Content.AddElement(tinyLine); // Add the new element to the Content of the page.
pg.UpdateContent(); // Update the PDF page with the changed content
pg.Dispose();
pageCounter++;
}
// Set up some parameters for the flattening.
FlattenTransparencyParams ftParams = new FlattenTransparencyParams();
// The Quality setting indicates the percentage (0%-100%) of vector information
// that is preserved. Lower values result in higher rasterization of vectors.
ftParams.Quality = 100;
ftParams.UseTextOutlines = true;
doc.FlattenTransparency(ftParams, 0, Document.LastPage);
Console.WriteLine("Flattened a multi-page document " + sInput1 + " as " + sOutput1 + ".");
doc.Save(SaveFlags.Full, sOutput1);
}
}
