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