#region MigraDoc - Creating Documents on the Fly
//
// Authors:
// Stefan Lange (mailto:Stefan.Lange@pdfsharp.com)
//
// Copyright (c) 2001-2013 empira Software GmbH, Cologne Area (Germany)
//
// http://www.pdfsharp.com
// http://www.migradoc.com
// http://sourceforge.net/projects/pdfsharp
//
// Permission is hereby granted, free of charge, to any person obtaining a
// copy of this software and associated documentation files (the "Software"),
// to deal in the Software without restriction, including without limitation
// the rights to use, copy, modify, merge, publish, distribute, sublicense,
// and/or sell copies of the Software, and to permit persons to whom the
// Software is furnished to do so, subject to the following conditions:
//
// The above copyright notice and this permission notice shall be included
// in all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
// THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
// FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
// DEALINGS IN THE SOFTWARE.
#endregion
using System;
using System.Diagnostics;
using System.Runtime.InteropServices;
using System.Drawing;
using System.Drawing.Printing;
using PdfSharp;
using PdfSharp.Drawing;
using MigraDoc.DocumentObjectModel.publics;
using MigraDoc.DocumentObjectModel.Visitors;
using MigraDoc.DocumentObjectModel.IO;
namespace MigraDoc.Rendering.Printing
{
///
/// Represents a specialized System.Drawing.Printing.PrintDocument for MigraDoc documents.
/// This component knows about MigraDoc and simplifies printing of MigraDoc documents.
///
public class MigraDocPrintDocument : PrintDocument
{
///
/// Initializes a new instance of the class.
///
public MigraDocPrintDocument()
{
DefaultPageSettings.Margins = new Margins(0, 0, 0, 0);
OriginAtMargins = false;
}
///
/// Initializes a new instance of the class
/// with the specified object.
///
public MigraDocPrintDocument(DocumentRenderer renderer)
{
_renderer = renderer;
DefaultPageSettings.Margins = new Margins(0, 0, 0, 0);
OriginAtMargins = false;
}
///
/// Gets or sets the DocumentRenderer that prints the pages of the document.
///
public DocumentRenderer Renderer
{
get { return _renderer; }
set { _renderer = value; }
}
DocumentRenderer _renderer;
///
/// Gets or sets the page number that identifies the selected page. It it used on printing when
/// PrintRange.Selection is set.
///
public int SelectedPage
{
get { return _selectedPage; }
set { _selectedPage = value; }
}
int _selectedPage;
///
/// Raises the event. It is called after the method is called and before the first page of the document prints.
///
/// A that contains the event data.
protected override void OnBeginPrint(PrintEventArgs e)
{
Debug.Assert(_renderer != null, "Cannot print without a MigraDoc.Rendering.DocumentRenderer.");
base.OnBeginPrint(e);
if (!e.Cancel)
{
switch (PrinterSettings.PrintRange)
{
case PrintRange.AllPages:
_pageNumber = 1;
_pageCount = _renderer.FormattedDocument.PageCount;
break;
case PrintRange.SomePages:
_pageNumber = PrinterSettings.FromPage;
_pageCount = PrinterSettings.ToPage - PrinterSettings.FromPage + 1;
break;
case PrintRange.Selection:
_pageNumber = _selectedPage;
_pageCount = 1;
break;
default:
Debug.Assert(false, "Invalid PrinterRange.");
e.Cancel = true;
break;
}
}
}
int _pageNumber = -1;
int _pageCount;
///
/// Raises the event. It is called immediately before each event.
///
/// A that contains the event data.
protected override void OnQueryPageSettings(QueryPageSettingsEventArgs e)
{
base.OnQueryPageSettings(e);
if (!e.Cancel)
{
PageSettings settings = e.PageSettings;
PageInfo pageInfo = _renderer.FormattedDocument.GetPageInfo(_pageNumber);
// set portrait/landscape
settings.Landscape = pageInfo.Orientation == PageOrientation.Landscape;
}
}
///
/// Raises the event. It is called before a page prints.
///
/// A that contains the event data.
protected override void OnPrintPage(PrintPageEventArgs e)
{
base.OnPrintPage(e);
if (!e.Cancel)
{
PageSettings settings = e.PageSettings;
try
{
Graphics graphics = e.Graphics;
IntPtr hdc = graphics.GetHdc();
int xOffset = GetDeviceCaps(hdc, PHYSICALOFFSETX);
int yOffset = GetDeviceCaps(hdc, PHYSICALOFFSETY);
graphics.ReleaseHdc(hdc);
graphics.TranslateTransform(-xOffset * 100 / graphics.DpiX, -yOffset * 100 / graphics.DpiY);
// Recall: Width and Height are exchanged when settings.Landscape is true.
XSize size = new XSize(e.PageSettings.Bounds.Width / 100.0 * 72, e.PageSettings.Bounds.Height / 100.0 * 72);
const float scale = 100f / 72f;
graphics.ScaleTransform(scale, scale);
// draw line A4 portrait
//graphics.DrawLine(Pens.Red, 0, 0, 21f / 2.54f * 72, 29.7f / 2.54f * 72);
}
catch
{
e.Cancel = true;
}
_pageNumber++;
_pageCount--;
e.HasMorePages = _pageCount > 0;
}
}
///
/// Raises the event. It is called when the last page of the document has printed.
///
/// A that contains the event data.
protected override void OnEndPrint(PrintEventArgs e)
{
base.OnEndPrint(e);
_pageNumber = -1;
}
[DllImport("gdi32.dll")]
static extern int GetDeviceCaps(IntPtr hdc, int capability);
const int PHYSICALOFFSETX = 112; // Physical Printable Area x margin
const int PHYSICALOFFSETY = 113; // Physical Printable Area y margin
}
}