/// <summary>
/// resave first page.
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
private async void resavePageButton_Click(object sender, RoutedEventArgs e)
{
using (var pdfDoc = new PDFDoc())
{
var doc = mPdfViewCtrl.GetDoc();
var firstPage = doc.GetPage(1);
pdfDoc.PagePushFront(firstPage);
doc.PageRemove(doc.GetPageIterator(1));
doc.InsertPages(1, pdfDoc, 1, pdfDoc.GetPageCount(), PDFDocInsertFlag.e_none);
mPdfViewCtrl.Update();
mPdfViewCtrl.UpdateLayout();
}
}
/// <summary>
/// The main entry point for the application.
/// </summary>
static void Main(string[] args)
{
// The first step in every application using PDFNet is to initialize the
// library and set the path to common PDF resources. The library is usually
// initialized only once, but calling Initialize() multiple times is also fine.
PDFNet.Initialize();
// Relative path to the folder containing test files.
string input_path = "../../TestFiles/";
string output_path = "../../TestFiles/Output/";
try
{
// Open the PDF document.
using (PDFDoc doc = new PDFDoc(input_path + "newsletter.pdf"))
using (ElementBuilder bld = new ElementBuilder()) // Used to build new Element objects
using (ElementWriter writer = new ElementWriter()) // Used to write Elements to the page
{
UndoManager undo_manager = doc.GetUndoManager();
// Take a snapshot to which we can undo after making changes.
ResultSnapshot snap0 = undo_manager.TakeSnapshot();
DocSnapshot snap0_state = snap0.CurrentState();
Page page = doc.PageCreate(); // Start a new page
writer.Begin(page); // Begin writing to this page
// ----------------------------------------------------------
// Add JPEG image to the file
Image img = Image.Create(doc, input_path + "peppers.jpg");
Element element = bld.CreateImage(img, new Matrix2D(200, 0, 0, 250, 50, 500));
writer.WritePlacedElement(element);
writer.End(); // Finish writing to the page
doc.PagePushFront(page);
// Take a snapshot after making changes, so that we can redo later (after undoing first).
ResultSnapshot snap1 = undo_manager.TakeSnapshot();
if (snap1.PreviousState().Equals(snap0_state))
{
Console.WriteLine("snap1 previous state equals snap0_state; previous state is correct");
}
DocSnapshot snap1_state = snap1.CurrentState();
doc.Save(output_path + "addimage.pdf", SDFDoc.SaveOptions.e_incremental);
if (undo_manager.CanUndo())
{
ResultSnapshot undo_snap = undo_manager.Undo();
doc.Save(output_path + "addimage_undone.pdf", SDFDoc.SaveOptions.e_incremental);
DocSnapshot undo_snap_state = undo_snap.CurrentState();
if (undo_snap_state.Equals(snap0_state))
{
Console.WriteLine("undo_snap_state equals snap0_state; undo was successful");
}
if (undo_manager.CanRedo())
{
ResultSnapshot redo_snap = undo_manager.Redo();
doc.Save(output_path + "addimage_redone.pdf", SDFDoc.SaveOptions.e_incremental);
if (redo_snap.PreviousState().Equals(undo_snap_state))
{
Console.WriteLine("redo_snap previous state equals undo_snap_state; previous state is correct");
}
DocSnapshot redo_snap_state = redo_snap.CurrentState();
if (redo_snap_state.Equals(snap1_state))
{
Console.WriteLine("Snap1 and redo_snap are equal; redo was successful");
}
}
else
{
Console.WriteLine("Problem encountered - cannot redo.");
}
}
else
{
Console.WriteLine("Problem encountered - cannot undo.");
}
}
}
catch (PDFNetException e)
{
Console.WriteLine(e.Message);
}
}
static void Main(string[] args)
{
PDFNet.Initialize();
// Relative path to the folder containing test files.
string input_path = "../../TestFiles/";
string output_path = "../../TestFiles/Output/";
// Sample 1 - Split a PDF document into multiple pages
try
{
Console.WriteLine("_______________________________________________");
Console.WriteLine("Sample 1 - Split a PDF document into multiple pages...");
Console.WriteLine("Opening the input pdf...");
using (PDFDoc in_doc = new PDFDoc(input_path + "newsletter.pdf"))
{
in_doc.InitSecurityHandler();
int page_num = in_doc.GetPageCount();
for (int i = 1; i <= page_num; ++i)
{
using (PDFDoc new_doc = new PDFDoc())
{
new_doc.InsertPages(0, in_doc, i, i, PDFDoc.InsertFlag.e_none);
new_doc.Save(output_path + "newsletter_split_page_" + i + ".pdf", SDFDoc.SaveOptions.e_remove_unused);
Console.WriteLine("Done. Result saved in newsletter_split_page_" + i + ".pdf");
}
}
}
}
catch (Exception e)
{
Console.WriteLine("Exception caught:\n{0}", e);
}
// Sample 2 - Merge several PDF documents into one
try
{
Console.WriteLine("_______________________________________________");
Console.WriteLine("Sample 2 - Merge several PDF documents into one...");
using (PDFDoc new_doc = new PDFDoc())
{
new_doc.InitSecurityHandler();
int page_num = 15;
for (int i = 1; i <= page_num; ++i)
{
Console.WriteLine("Opening newsletter_split_page_" + i + ".pdf");
using (PDFDoc in_doc = new PDFDoc(output_path + "newsletter_split_page_" + i + ".pdf"))
{
new_doc.InsertPages(i, in_doc, 1, in_doc.GetPageCount(), PDFDoc.InsertFlag.e_none);
}
}
new_doc.Save(output_path + "newsletter_merge_pages.pdf", SDFDoc.SaveOptions.e_remove_unused);
}
Console.WriteLine("Done. Result saved in newsletter_merge_pages.pdf");
}
catch (Exception e)
{
Console.WriteLine("Exception caught:\n{0}", e);
}
// Sample 3 - Delete every second page
try
{
Console.WriteLine("_______________________________________________");
Console.WriteLine("Sample 3 - Delete every second page...");
Console.WriteLine("Opening the input pdf...");
using (PDFDoc in_doc = new PDFDoc(input_path + "newsletter.pdf"))
{
in_doc.InitSecurityHandler();
int page_num = in_doc.GetPageCount();
PageIterator itr;
while (page_num >= 1)
{
itr = in_doc.GetPageIterator(page_num);
in_doc.PageRemove(itr);
page_num -= 2;
}
in_doc.Save(output_path + "newsletter_page_remove.pdf", 0);
}
Console.WriteLine("Done. Result saved in newsletter_page_remove.pdf...");
}
catch (Exception e)
{
Console.WriteLine("Exception caught:\n{0}", e);
}
// Sample 4 - Inserts a page from one document at different
// locations within another document
try
{
Console.WriteLine("_______________________________________________");
Console.WriteLine("Sample 4 - Insert a page at different locations...");
Console.WriteLine("Opening the input pdf...");
using (PDFDoc in1_doc = new PDFDoc(input_path + "newsletter.pdf"))
using (PDFDoc in2_doc = new PDFDoc(input_path + "fish.pdf"))
{
in1_doc.InitSecurityHandler();
in2_doc.InitSecurityHandler();
Page src_page = in2_doc.GetPage(1);
PageIterator dst_page = in1_doc.GetPageIterator(1);
int page_num = 1;
while (dst_page.HasNext())
{
if (page_num++ % 3 == 0)
{
in1_doc.PageInsert(dst_page, src_page);
}
dst_page.Next();
}
in1_doc.Save(output_path + "newsletter_page_insert.pdf", 0);
Console.WriteLine("Done. Result saved in newsletter_page_insert.pdf...");
}
}
catch (Exception e)
{
Console.WriteLine("Exception caught:\n{0}", e);
}
// Sample 5 - Replicate pages within a single document
try
{
Console.WriteLine("_______________________________________________");
Console.WriteLine("Sample 5 - Replicate pages within a single document...");
Console.WriteLine("Opening the input pdf...");
using (PDFDoc doc = new PDFDoc(input_path + "newsletter.pdf"))
{
doc.InitSecurityHandler();
// Replicate the cover page three times (copy page #1 and place it before the
// seventh page in the document page sequence)
Page cover = doc.GetPage(1);
PageIterator p7 = doc.GetPageIterator(7);
doc.PageInsert(p7, cover);
doc.PageInsert(p7, cover);
doc.PageInsert(p7, cover);
// Replicate the cover page two more times by placing it before and after
// existing pages.
doc.PagePushFront(cover);
doc.PagePushBack(cover);
doc.Save(output_path + "newsletter_page_clone.pdf", 0);
Console.WriteLine("Done. Result saved in newsletter_page_clone.pdf...");
}
}
catch (Exception e)
{
Console.WriteLine("Exception caught:\n{0}", e);
}
// Sample 6 - Use ImportPages() in order to copy multiple pages at once
// in order to preserve shared resources between pages (e.g. images, fonts,
// colorspaces, etc.)
try
{
Console.WriteLine("_______________________________________________");
Console.WriteLine("Sample 6 - Preserving shared resources using ImportPages...");
Console.WriteLine("Opening the input pdf...");
using (PDFDoc in_doc = new PDFDoc(input_path + "newsletter.pdf"))
{
in_doc.InitSecurityHandler();
using (PDFDoc new_doc = new PDFDoc())
{
ArrayList copy_pages = new ArrayList();
for (PageIterator itr = in_doc.GetPageIterator(); itr.HasNext(); itr.Next())
{
copy_pages.Add(itr.Current());
}
ArrayList imported_pages = new_doc.ImportPages(copy_pages);
for (int i = 0; i != imported_pages.Count; ++i)
{
new_doc.PagePushFront((Page)imported_pages[i]); // Order pages in reverse order.
// Use PagePushBack() if you would like to preserve the same order.
}
new_doc.Save(output_path + "newsletter_import_pages.pdf", 0);
Console.WriteLine("Done. Result saved in newsletter_import_pages.pdf...");
Console.WriteLine();
Console.WriteLine("Note that the output file size is less than half the size");
Console.WriteLine("of the file produced using individual page copy operations");
Console.WriteLine("between two documents");
}
}
}
catch (Exception e)
{
Console.WriteLine("Exception caught:\n{0}", e);
}
}