// Copyright 2010 ESRI
// 
// All rights reserved under the copyright laws of the United States
// and applicable international laws, treaties, and conventions.
// 
// You may freely redistribute and use this sample code, with or
// without modification, provided you include the original copyright
// notice and use restrictions.
// 
// See the use restrictions.
// 

using System;
using System.Drawing;
using System.Runtime.InteropServices;
using System.Drawing.Printing;
using System.Diagnostics;
using ESRI.ArcGIS.Carto;
using ESRI.ArcGIS.Display;
using ESRI.ArcGIS.esriSystem;
using ESRI.ArcGIS.Geometry;
using ESRI.ArcGIS.Output;
using System.Collections;
using System.Windows.Forms;

namespace PrintMultiPagesCS_NET_Addin
{
  public class PrintMultiPagesCS_NET_Addin : ESRI.ArcGIS.Desktop.AddIns.Button
  {

    /* GDI callback to GetDeviceCaps and CreateDC function */
    [DllImport("GDI32.dll")]
    public static extern int GetDeviceCaps(int hdc, int nIndex);

    [DllImport("GDI32.dll")]
    public static extern int CreateDC(string strDriver, string strDevice, string strOutput, IntPtr pData);

    [DllImport("User32.dll")]
    public static extern int ReleaseDC(int hWnd, int hDC);

    public PrintMultiPagesCS_NET_Addin()
    {
    }

    protected override void OnClick()
    {
      PrintMultiPageParameterized(3);
    }
    protected override void OnUpdate()
    {
      Enabled = ArcMap.Application != null;
    }

    public void PrintMultiPageParameterized(long iResampleRatio)
    {

      /* Prints tiled map by using IPrinterMPage. */
        
      IActiveView docActiveView = ArcMap.Document.ActiveView;
      IPrinter docPrinter;
      long iPrevOutputImageQuality;
      IOutputRasterSettings docOutputRasterSettings;
      tagRECT deviceRECT;
      IPaper docPaper;
      /* printdocument is from the .NET assembly system.drawing.printing */
      System.Drawing.Printing.PrintDocument sysPrintDocumentDocument;


      short iNumPages;
      IEnvelope docPrinterBounds;
      IEnvelope VisibleBounds;


      docPrinterBounds = new EnvelopeClass();
      VisibleBounds = new EnvelopeClass();

      // save the previous output image quality, so that when the export is complete it will be set back.
      docOutputRasterSettings = docActiveView.ScreenDisplay.DisplayTransformation as IOutputRasterSettings;
      iPrevOutputImageQuality = docOutputRasterSettings.ResampleRatio;

      SetOutputQuality(docActiveView, iResampleRatio);


      /* Now we need to get the default printer name.  Since this is a generic command,
       * we can't use the printername property of the document.  So instead, we use the 
       * System.Drawing.Printing objects to find the default printer.
       */
      docPrinter = new EmfPrinterClass();
      sysPrintDocumentDocument = new System.Drawing.Printing.PrintDocument();
      docPaper = new PaperClass();

      /* testing to see if printer instantiated in sysPrintDocumentDocument is the 
       * default printer.  It SHOULD be, but this is just a reality check.
       */
      bool isDefault = sysPrintDocumentDocument.PrinterSettings.IsDefaultPrinter;

      if (isDefault)
      {
        //Set docPaper's printername to the printername of the default printer
        docPaper.PrinterName = sysPrintDocumentDocument.PrinterSettings.PrinterName;

      }
      else
      {
        //if we get an unexpected result, return.
        MessageBox.Show("Error getting default printer info, exiting...");
        return;
      }


      //make sure the paper orientation is set to the orientation matching the current view.
      docPaper.Orientation = ArcMap.Document.PageLayout.Page.Orientation;

      /* Now assign docPrinter the paper and with it the printername.  This process is two steps
       * because you cannot change an IPrinter's printer except by passing it as a part of 
       * the IPaper.  That's why we setup docPrinter.Paper.PrinterName first.
       */
      docPrinter.Paper = docPaper;

      //set the spoolfilename (this is the job name that shows up in the print queue)
      docPrinter.SpoolFileName = "PrintActiveViewSample";

      // Get the printer's hDC, so we can use the Win32 GetDeviceCaps function to
      //  get Printer's Physical Printable Area x and y margins
      int hInfoDC;
      hInfoDC = CreateDC(docPrinter.DriverName, docPrinter.Paper.PrinterName, "", IntPtr.Zero);

      // Find out how many printer pages the output will cover. 
      if (ArcMap.Document.ActiveView is IPageLayout)
      {
        ArcMap.Document.PageLayout.Page.PrinterPageCount(docPrinter, 0, out iNumPages);
      }
      else
      {
        iNumPages = 1;
      }
      
      if (iNumPages < 2)
      {
        MessageBox.Show("Sample requires map in Layout View and map to be tiled to printer paper");
        return;
      }

      IPrinterMPage PrintMPage;
      int intPageHandle;
      
      PrintMPage = docPrinter as IPrinterMPage;

      // Code inside StartMapDocument <-----> EndMapDocument is hard coded to print the first two pages of the tiled print
      // Printer and Page Bounds need to be calculated for each corresponding tile that gets printed

      PrintMPage.StartMapDocument();  

          //calculate printer bounds for the first page
          ArcMap.Document.PageLayout.Page.GetDeviceBounds(docPrinter, 1, 0, docPrinter.Resolution, docPrinterBounds); // get device bounds of the first page

          //Transfer PrinterBounds envelope, offsetting by PHYSICALOFFSETX
          // the Win32 constant for PHYSICALOFFSETX is 112
          // the Win32 constant for PHYSICALOFFSETY is 113
          deviceRECT.bottom = (int)(docPrinterBounds.YMax - GetDeviceCaps(hInfoDC, 113));
          deviceRECT.left = (int)(docPrinterBounds.XMin - GetDeviceCaps(hInfoDC, 112));
          deviceRECT.right = (int)(docPrinterBounds.XMax - GetDeviceCaps(hInfoDC, 112));
          deviceRECT.top = (int)(docPrinterBounds.YMin - GetDeviceCaps(hInfoDC, 113));

          // Transfer offsetted PrinterBounds envelope back to the deviceRECT
          docPrinterBounds.PutCoords(0, 0, deviceRECT.right - deviceRECT.left, deviceRECT.bottom - deviceRECT.top);

          if (ArcMap.Document.ActiveView is IPageLayout)
          {
            //get the visible bounds for this layout, based on the current page number.
            ArcMap.Document.PageLayout.Page.GetPageBounds(docPrinter, 1, 0, VisibleBounds); // get visible bounds of the first page
          }
          else
          {
            MessageBox.Show("Please Use Map Layout View for this Sample");
            return;
          }

          // start printing the first page bracket, returns handle of the current page.  
          // handle is then passed to the ActiveView.Output()
          intPageHandle = PrintMPage.StartPage(docPrinterBounds, hInfoDC);
                
                ArcMap.Document.ActiveView.Output(intPageHandle, docPrinter.Resolution, ref deviceRECT, VisibleBounds, null);
          
          PrintMPage.EndPage(); //end printing the first page bracket

          
          // calculate printer bounds for the second page
          ArcMap.Document.PageLayout.Page.GetDeviceBounds(docPrinter, 2, 0, docPrinter.Resolution, docPrinterBounds); // get device bounds of the first page
          
          //Transfer PrinterBounds envelope, offsetting by PHYSICALOFFSETX
          // the Win32 constant for PHYSICALOFFSETX is 112
          // the Win32 constant for PHYSICALOFFSETY is 113
          deviceRECT.bottom = (int)(docPrinterBounds.YMax - GetDeviceCaps(hInfoDC, 113));
          deviceRECT.left = (int)(docPrinterBounds.XMin - GetDeviceCaps(hInfoDC, 112));
          deviceRECT.right = (int)(docPrinterBounds.XMax - GetDeviceCaps(hInfoDC, 112));
          deviceRECT.top = (int)(docPrinterBounds.YMin - GetDeviceCaps(hInfoDC, 113));

          // Transfer offsetted PrinterBounds envelope back to the deviceRECT
          docPrinterBounds.PutCoords(0, 0, deviceRECT.right - deviceRECT.left, deviceRECT.bottom - deviceRECT.top);

          if (ArcMap.Document.ActiveView is IPageLayout)
          {
            //get the visible bounds for this layout, based on the current page number.
            ArcMap.Document.PageLayout.Page.GetPageBounds(docPrinter, 2, 0, VisibleBounds); // get visible bounds of the first page
          }
          else
          {
            MessageBox.Show("Please Use Map Layout View for this Sample");
            return;
          }

          // start printing the second page bracket, returns handle of the current page.  
          // handle is then passed to the ActiveView.Output()
          intPageHandle = PrintMPage.StartPage(VisibleBounds, hInfoDC);
              
              ArcMap.Document.ActiveView.Output(intPageHandle, docPrinter.Resolution, ref deviceRECT, VisibleBounds, null);

              PrintMPage.EndPage(); //end printing the second page bracket

       

      PrintMPage.EndMapDocument();


      //now set the output quality back to the previous output quality.
      SetOutputQuality(docActiveView, iPrevOutputImageQuality);

      //release the DC...
      ReleaseDC(0, hInfoDC);
    }

    private void SetOutputQuality(IActiveView docActiveView, long iResampleRatio)
    {
      /* This function sets OutputImageQuality for the active view.  If the active view is a pagelayout, then
       * it must also set the output image quality for EACH of the Maps in the pagelayout.
       */
      IGraphicsContainer docGraphicsContainer;
      IElement docElement;
      IOutputRasterSettings docOutputRasterSettings;
      IMapFrame docMapFrame;
      IActiveView tmpActiveView;

      if (docActiveView is IMap)
      {
        docOutputRasterSettings = docActiveView.ScreenDisplay.DisplayTransformation as IOutputRasterSettings;
        docOutputRasterSettings.ResampleRatio = (int)iResampleRatio;
      }
      else if (docActiveView is IPageLayout)
      {
        //assign ResampleRatio for PageLayout
        docOutputRasterSettings = docActiveView.ScreenDisplay.DisplayTransformation as IOutputRasterSettings;
        docOutputRasterSettings.ResampleRatio = (int)iResampleRatio;
        //and assign ResampleRatio to the Maps in the PageLayout
        docGraphicsContainer = docActiveView as IGraphicsContainer;
        docGraphicsContainer.Reset();

        docElement = docGraphicsContainer.Next();
        while (docElement != null)
        {
          if (docElement is IMapFrame)
          {
            docMapFrame = docElement as IMapFrame;
            tmpActiveView = docMapFrame.Map as IActiveView;
            docOutputRasterSettings = tmpActiveView.ScreenDisplay.DisplayTransformation as IOutputRasterSettings;
            docOutputRasterSettings.ResampleRatio = (int)iResampleRatio;
          }
          docElement = docGraphicsContainer.Next();
        }

        docMapFrame = null;
        docGraphicsContainer = null;
        tmpActiveView = null;
      }
      docOutputRasterSettings = null;

    }

  }

}