PrintDocument.cs :  » 2.6.4-mono-.net-core » System.Drawing » System » Drawing » Printing » C# / CSharp Open Source

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C# / CSharp Open Source » 2.6.4 mono .net core » System.Drawing 
System.Drawing » System » Drawing » Printing » PrintDocument.cs
//
// System.Drawing.PrintDocument.cs
//
// Authors:
//   Dennis Hayes (dennish@Raytek.com)
//   Herve Poussineau (hpoussineau@fr.st)
//   Andreas Nahr (ClassDevelopment@A-SoftTech.com)
//
// (C) 2002 Ximian, Inc
//

//
// Copyright (C) 2004 Novell, Inc (http://www.novell.com)
//
// 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.
//

using System;
using System.ComponentModel;

namespace System.Drawing.Printing{
  [DefaultEvent ("PrintPage"), DefaultProperty ("DocumentName")]
  [ToolboxItemFilter ("System.Drawing.Printing", ToolboxItemFilterType.Allow)]
  public class PrintDocument : System.ComponentModel.Component
  {
    private PageSettings defaultpagesettings;
    private PrinterSettings printersettings;
    private PrintController printcontroller;
    private string documentname;
#if !(NET_1_0)
    private bool originAtMargins = false; // .NET V1.1 Beta
#endif

    public PrintDocument() {
      documentname = "document"; //offical default.
      printersettings = new PrinterSettings(); // use default values
      defaultpagesettings = (PageSettings) printersettings.DefaultPageSettings.Clone ();
      printcontroller = new StandardPrintController();
    }

    // properties
    [DesignerSerializationVisibility (DesignerSerializationVisibility.Hidden)]
    [Browsable (false)]
    [SRDescription ("The settings for the current page.")]
    public PageSettings DefaultPageSettings{
      get{
        return defaultpagesettings;
      }
      set{
        defaultpagesettings = value;
      }
    }

    // Name of the document, not the file!
    [DefaultValue ("document")]
    [SRDescription ("The name of the document.")]
    public string DocumentName{
      get{
        return documentname;
      }
      set{
        documentname = value;
      }
    }

    [DesignerSerializationVisibility (DesignerSerializationVisibility.Hidden)]
    [Browsable (false)]
    [SRDescription ("The print controller object.")]
    public PrintController PrintController{
      get{
        return printcontroller;
      }
      set{
        printcontroller = value;
      }
    }

    [DesignerSerializationVisibility (DesignerSerializationVisibility.Hidden)]
    [Browsable (false)]
    [SRDescription ("The current settings for the active printer.")]
    public PrinterSettings PrinterSettings{
      get{
        return printersettings;
      }
      set{
        printersettings = value == null ? new PrinterSettings () : value;
      }
    }

#if !(NET_1_0)
    [DefaultValue (false)]
    [SRDescription ("Determines if the origin is set at the specified margins.")]
    public bool OriginAtMargins{
      get{
        return originAtMargins;
      }
      set{
        originAtMargins = value;
      }
    }
#endif

    // methods
    public void Print(){
      PrintEventArgs printArgs = new PrintEventArgs();
      this.OnBeginPrint(printArgs);
      if (printArgs.Cancel)
        return;
      PrintController.OnStartPrint(this, printArgs);
      if (printArgs.Cancel)
        return;      
        
      Graphics g = null;
      
      if (printArgs.GraphicsContext != null) {
        g = Graphics.FromHdc (printArgs.GraphicsContext.Hdc);
        printArgs.GraphicsContext.Graphics = g;
      }

      // while there are more pages
      PrintPageEventArgs printPageArgs;
      do
      {
        QueryPageSettingsEventArgs queryPageSettingsArgs = new QueryPageSettingsEventArgs (
            DefaultPageSettings.Clone () as PageSettings);
        OnQueryPageSettings (queryPageSettingsArgs);
        
        PageSettings pageSettings = queryPageSettingsArgs.PageSettings;
        printPageArgs = new PrintPageEventArgs(
            g,
            pageSettings.Bounds,
            new Rectangle(0, 0, pageSettings.PaperSize.Width, pageSettings.PaperSize.Height),
            pageSettings);
              
        // TODO: We should create a graphics context for each page since they can have diferent paper
        // size, orientation, etc. We use a single graphic for now to keep Cairo using a single PDF file.
        
        printPageArgs.GraphicsContext = printArgs.GraphicsContext;
        Graphics pg = PrintController.OnStartPage(this, printPageArgs);

        // assign Graphics in printPageArgs
        printPageArgs.SetGraphics(pg);
        
        if (!printPageArgs.Cancel)
          this.OnPrintPage(printPageArgs);        
        
        PrintController.OnEndPage(this, printPageArgs);        
        if (printPageArgs.Cancel)
          break;        
      } while (printPageArgs.HasMorePages);      

      this.OnEndPrint(printArgs);
      PrintController.OnEndPrint(this, printArgs);      
    }

    public override string ToString(){
      return "[PrintDocument " + this.DocumentName + "]";
    }
    
    // events
    protected virtual void OnBeginPrint(PrintEventArgs e){
      //fire the event
      if (BeginPrint != null)
        BeginPrint(this, e);
    }
    
    protected virtual void OnEndPrint(PrintEventArgs e){
      //fire the event
      if (EndPrint != null)
        EndPrint(this, e);
    }
    
    protected virtual void OnPrintPage(PrintPageEventArgs e){
      //fire the event
      if (PrintPage != null)
        PrintPage(this, e);
    }
    
    protected virtual void OnQueryPageSettings(QueryPageSettingsEventArgs e){
      //fire the event
      if (QueryPageSettings != null)
        QueryPageSettings(this, e);
    }

    [SRDescription ("Raised when printing begins")]
    public event PrintEventHandler BeginPrint;

    [SRDescription ("Raised when printing ends")]
    public event PrintEventHandler EndPrint;

    [SRDescription ("Raised when printing of a new page begins")]
    public event PrintPageEventHandler PrintPage;

    [SRDescription ("Raised before printing of a new page begins")]
    public event QueryPageSettingsEventHandler QueryPageSettings;
  }
}
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