reportdocument.cs

c#源代码

//
// SharpDevelop ReportEditor
//
// Copyright (C) 2005 Peter Forstmeier
//
// This program is free software; you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation; either version 2 of the License, or
// (at your option) any later version.
//
// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
// GNU General Public License for more details.
//
// You should have received a copy of the GNU General Public License
// along with this program; if not, write to the Free Software
// Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
//
// Peter Forstmeier ([e-mail])

using System;
using System.Drawing;
using System.Windows.Forms;
using System.Drawing.Printing;
	
using SharpReportCore;
/// <summary>
/// Derived from printDocument to have more control about printing
/// </summary>
/// <remarks>
/// 	created by - Forstmeier Peter
/// 	created on - 21.11.2004 14:47:20
/// </remarks>
	
namespace SharpReportCore {
	public delegate void ReportPageEventHandler (object sender,
	                                             ReportPageEventArgs rpea);
	
	public class ReportDocument : PrintDocument {
		
		public event QueryPageSettingsEventHandler QueryPage;
		
		public event ReportPageEventHandler ReportBegin;
		
		public event ReportPageEventHandler PrintPageBegin;
		public event ReportPageEventHandler PrintPageBodyStart;
		public event ReportPageEventHandler PrintPageBodyEnd;
		public event ReportPageEventHandler PrintPageEnd;
		public event ReportPageEventHandler ReportEnd;
		
		
		int pageNr;
		
		
		public ReportDocument():base() {
			base.BeginPrint += new PrintEventHandler (ReportDocumentBeginPrint);
			
			base.PrintPage += new PrintPageEventHandler (ReportDocumentPrintPage);
			
			base.EndPrint += new PrintEventHandler (ReportDocumentEndPrint);
			base.QueryPageSettings += new QueryPageSettingsEventHandler (ReportDocumentQueryPage);
		}
		
		void GeneratePage (SharpReportCore.ReportPageEventArgs page) {		
			if (PrintPageBegin != null) {
				PrintPageBegin (this,page);
			}
			
			if (page.ForceNewPage == true) {
				page.PrintPageEventArgs.HasMorePages = true;
				return;
			}
			// print PageFooter before DetailSection
			//so it's much easyer to calculate size of DetailSection
			if (PrintPageEnd != null) {
				PrintPageEnd (this,page);
			}
			
			
			if (PrintPageBodyStart != null) {
				PrintPageBodyStart (this,page);
			}
			
			if (PrintPageBodyEnd != null) {
				PrintPageBodyEnd (this,page);
			}
		}
		
		#region events
		//this events are also used by PrintPreviewControl
		public  void ReportDocumentBeginPrint (object sender,PrintEventArgs e) {
			pageNr = 0;
//			if (ReportBegin != null) {
//				ReportBegin (this,null);
//			}
		}
		
		public void ReportDocumentQueryPage (object sender, QueryPageSettingsEventArgs e) {
			if (QueryPage != null) {
				QueryPage (this,e);
			}
		}
		
		public void ReportDocumentPrintPage (object sender, PrintPageEventArgs e) {
			pageNr ++;
			ReportPageEventArgs pea = new ReportPageEventArgs (e,pageNr,false,new PointF (0,0));
			
			if (pageNr == 1) {
				if (ReportBegin != null) {
					ReportBegin (this,pea);
				}
			}
			
			GeneratePage (pea);
			
			if ((pea.ForceNewPage == true) && (pea.PrintPageEventArgs.HasMorePages == true)) {
				pea.ForceNewPage = false;
			    	return;
			}
			if (pea.PrintPageEventArgs.HasMorePages == false) {
				if (ReportEnd != null) {
					ReportEnd (this,pea);
				}
			}
			
		}
		public void  ReportDocumentEndPrint (object sender,PrintEventArgs e) {
			pageNr = 0;
			if (ReportEnd != null) {
				ReportEnd (this,null);
			}
			
		}
		#endregion
		
		
	}
}