// Copyright (C) 2003-2026, Foxit Software Inc..
// All Rights Reserved.
//
// http://www.foxitsoftware.com
//
// The following code is copyrighted and contains proprietary information and trade secrets of Foxit Software Inc..
// You cannot distribute any part of Foxit PDF SDK to any third party or general public,
// unless there is a separate license agreement with Foxit Software Inc. which explicitly grants you such rights.
//
// This file contains an example to demonstrate how to use Foxit PDF SDK to edit paragraph in a PDF document.

using System;
using System.IO;

using foxit;
using foxit.common;
using foxit.common.fxcrt;
using foxit.pdf;
using foxit.addon.pageeditor;

class FxParagraphEditingProviderCallback : ParagraphEditingProviderCallback
{
  private int page_index  = 0;

  public FxParagraphEditingProviderCallback(int  index)
  {
    page_index = index;
  }

  public override void Release()
  {
  }

  public override void AddUndoItem(ParagraphEditingUndoItem undo_item) {

  }
  public override RectF GetClientRect(PDFDoc document) {
    return new RectF();
  }
  public override int GetCurrentPageIndex(PDFDoc document) {
    return 0;
  }
  public override RectF GetPageRect(PDFDoc document, int page_index) {
    PDFPage page = document.GetPage(page_index);
    int width = (int)(page.GetWidth());
    int height = (int)(page.GetHeight());
    RectF rect = new RectF(); ;
    rect.left = 0;
    rect.bottom = height;
    rect.right = width;
    rect.top = 0;
    page.Dispose();
    return rect;
  }
  public override IntPtr GetPageViewHandle(PDFDoc document, int page_index) {
    return IntPtr.Zero; ;
  }
  public override RectF GetPageVisibleRect(PDFDoc document, int page_index) {
    return new RectF();
  }
  public override Matrix2D GetRenderMatrix(PDFDoc document, int page_index) {
    PDFPage page = document.GetPage(page_index);
    int width = (int)page.GetWidth();
    int height = (int)page.GetHeight();
    Matrix2D matrix = page.GetDisplayMatrix(0, 0, width, height, page.GetRotation());
    page.Dispose();
    return matrix;
  }
  public override Rotation GetRotation(PDFDoc document, int page_index) {
    return Rotation.e_Rotation0;

  }
  public override float GetScale(PDFDoc document, int page_index) {
    return 1;
  }
  public override Int32Array GetVisiblePageIndexArray(PDFDoc document ) {
    Int32Array page_array = new Int32Array();
    page_array.Add(0);
    return page_array;
  }
  public override bool GotoPageView(PDFDoc document, int page_index, float left, float top) {
    return true;
  }
  public override void InvalidateRect(PDFDoc document, int page_index, RectFArray invalid_rects) {
  }
  public override void NotifyTextInputReachLimit(PDFDoc document, int page_index) {
  }
  public override void SetDocChangeMark(PDFDoc document) {
  }
};

namespace paragraph_editingCS
{
  class paragraph_editing
  {

    static void Main(String[] args)
    {
      string input_path = "../input_files/";
      string output_path = "../output_files/paragraph_editing/";
      System.IO.Directory.CreateDirectory(output_path);

      string sn = "Rew1vB0TqoMIxX444UcpScARWdhgJpsJfzmyMLR32a0+EgrCjp2NaQ==";
      string key = "8f3g1sFttW8NAgfSNv+BvaJWy4Pp8flcm7ncNDkdvCCO4JwUFbGLyZdujReMaiplbYJwwxam3lr7uHtQaEf0xTSu8j2ZBdrZ8FS4OQkEUjOI9UEGb3Ic0GqmlP9T9OnSItOYqoZZA/OnYg5EaVP+c/ha32nUquOk+5riEdhYgINAZDdgJkPc+YSWsrfixOIROf6t34j3eRcyFnOY0MS7tSXi1AEPE0VZdyu+5bfmBSGvLI+WR5lQ+oOQR5hRGwqf990WEdBelNO7dxhZELVhEZ+/L60PpDf5y9A8qmrY6PiEU8nhqIyLpks0BxeIsYyZ3Cr82jjfbItPGyEARsIVzluBSgVMD4oGjojz8T6wGDEXUbmZH/pra94XAs8wZ28mzbmIEppWnhBqX0c6Ov8iXCfFfUZr4KNuPxMEgk4VOYTMOd70GEjGnylivw18hbn7ZpkWh2Zql+uU2HejvOgn+WHvT0HF9NhK0Xb5vH8aFkgBP92PJx8obIbxBVeeExczxvsqWufuPdXS2sPNIgMYZ2TtvqVVsiUToeGB2FQo09fzZOSH5Vi18u/siyvC3FmjeMf4+OYWPuDPNCcrb21NgcHam7XI8AAoGLTGtLLWR+fxynbBBcg2d2ZPcZ5CMFIfOBHRWCkcA0sDT3cl9nsBppHNJze/jVxHy+lREeQEA/etSIgohTGAWW3ZlpibRXqMxlmVWEPifCubbWTzQ6U54mRMpW2UghH3gvCNFNgdday3Av7EtlIJOdUuiMq3zmmd5J4Jt4C82CKnVewA0DtZ4EEtwRG9IYuLrfpuZlnjBAtoeXRV1lqUZ6BcCe0E3m9jO28sGkALuIeJQ74XG7X8lMC7lMWWQYiYD7D6G9QT6X3qV4vXJwNKRKpYc/rI+amEawTSnDYAMEaYPwtZ0rb/7BL+atsZZaI+ncebdfVfjDJZbCZAc+JnkuNlUn2xrNRuObw8h/G0lm2pNOEJ10S8R4+yplo5B1QmC2dCDhaTaW67QJPqnJPKbVmjw7i6KGBi+CDP3JnAKlOX/YUu8uk56JfeQUuGcQg/KaBMGctnchH2n1i3+oGbibhurQj22+OO66Q6mijKoCRP/QJm5WTGcO4c0iVX0B8dIlai/uv/pGU8Wps9MxysH5ViVIj56LWKuNfy1FNO9+wx4iHYnUxfW0Iccq3YJYAlOBkMv8VZIJl9aTEEFJ626LJEw/UbEBdR9CdlwnylPf4RuNW/lcGYMgq3xNVpp/bzYKwZivvQOFgMdX1tv8D33SHvAm3zrRCU+v94BJXnBi9k25fnKsc705IMwv+I6bueXA+mDnagj1oTqsWXZ0WnPAYI3WUO7sBf7XUH230wfYXnTSVhujJxiEP/2oWqi2813gtQkKwz9N2p6yT8Vsh3+BaAwwDvtOZMJKUFcabTBSL6NoouzmzwItJ4mIboT6KXaef66rs8jCU=";
      // Initialize library
      ErrorCode error_code = Library.Initialize(sn, key);
      if (error_code != ErrorCode.e_ErrSuccess)
        Console.WriteLine("Library Initialize Error: {0}\n", error_code);

      try
      {
        string input_file = input_path + "AboutFoxit.pdf";
        using (PDFDoc doc = new PDFDoc(input_file))
        {
          error_code = doc.Load(null);
          if (error_code != ErrorCode.e_ErrSuccess)
          {
            Console.WriteLine("The PDFDoc " + input_file + " Error: " + error_code);
            Library.Release();
            return;
          }
          using (PDFPage page = doc.GetPage(0)) {

          page.StartParse(0, null, false);
          float height = page.GetHeight();
          string output_dir = output_path;
          int index = page.GetIndex();
          using (FxParagraphEditingProviderCallback callback = new FxParagraphEditingProviderCallback(index))
          {
            using (ParagraphEditingMgr editingMgr = new ParagraphEditingMgr(callback, doc))
            {
              //Paragraph_editing
              ParagraphEditing editing = editingMgr.GetParagraphEditing();
              if (editing.IsEmpty() == true)
                return;
              editing.Activate();
              editing.StartEditing(0, new PointF(95, height - 728), new PointF(95, height - 728));
              editing.SetFontSize(24);
              editing.SetUnderline(true);
              editing.InsertText("InsertText_Paragraph_editing");
              editing.Deactivate();
              output_path = output_dir + "Paragraph_editing.pdf";
              doc.SaveAs(output_path, (int)PDFDoc.SaveFlags.e_SaveFlagNoOriginal);

              //Join&split
              JoinSplit joinSplit = editingMgr.GetJoinSplit();
              joinSplit.Activate();
              joinSplit.OnLButtonDown(0, new PointF(289, 659));
              joinSplit.OnLButtonUp(0, new PointF(289, 659));
              joinSplit.SplitBoxes();
              joinSplit.Deactivate();
              output_path = output_dir + "Split_Boxes.pdf";
              doc.SaveAs(output_path, (int)PDFDoc.SaveFlags.e_SaveFlagNoOriginal);

              joinSplit.Activate();
              joinSplit.OnLButtonDown(0, new PointF(307, height - 637));
              joinSplit.OnLButtonUp(0, new PointF(307, height - 637));
              joinSplit.OnLButtonDown(0, new PointF(307, height - 453));
              joinSplit.OnLButtonUp(0, new PointF(307, height - 453));
              joinSplit.JoinBoxes();
              joinSplit.Deactivate();
              output_path = output_dir + "Join_Boxes.pdf";
              doc.SaveAs(output_path, (int)PDFDoc.SaveFlags.e_SaveFlagNoOriginal);
            }
          }
        }
        }
        Console.WriteLine("Paragraph editing successfully.");
      }
      catch (System.Exception e)
      {
        Console.WriteLine(e.Message);
      }
      Library.Release();
    }
  }
}
