mcs/class/System.Drawing/System.Drawing.Printing/PreviewPrintController.cs

   1 //
   2 // System.Drawing.PreviewPrintController.cs
   3 //
   4 // Author:
   5 //   Dennis Hayes (dennish@Raytek.com)
   6 //
   7 // (C) 2002 Ximian, Inc
   8 //
   9
  10 //
  11 // Copyright (C) 2004 Novell, Inc (http://www.novell.com)
  12 //
  13 // Permission is hereby granted, free of charge, to any person obtaining
  14 // a copy of this software and associated documentation files (the
  15 // "Software"), to deal in the Software without restriction, including
  16 // without limitation the rights to use, copy, modify, merge, publish,
  17 // distribute, sublicense, and/or sell copies of the Software, and to
  18 // permit persons to whom the Software is furnished to do so, subject to
  19 // the following conditions:
  20 //
  21 // The above copyright notice and this permission notice shall be
  22 // included in all copies or substantial portions of the Software.
  23 //
  24 // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
  25 // EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  26 // MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
  27 // NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
  28 // LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
  29 // OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
  30 // WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  31 //
  32
  33 using System;
  34 using System.Collections;
  35 using System.Drawing.Imaging;
  36
  37 namespace System.Drawing.Printing
  38 {
  39         public class PreviewPrintController : PrintController
  40         {
  41                 bool useantialias;
  42                 ArrayList pageInfoList;
  43
  44                 public PreviewPrintController()
  45                 {
  46                         useantialias = false;
  47                         pageInfoList = new ArrayList ();
  48                 }
  49 #if NET_2_0
  50                 public virtual bool IsPreview {
  51                         get { return true; }
  52                 }
  53 #endif
  54
  55                 [MonoTODO]
  56                 public override void OnEndPage(PrintDocument document, PrintPageEventArgs e)
  57                 {
  58                 }
  59
  60                 [MonoTODO]
  61                 public override void OnStartPrint(PrintDocument document, PrintEventArgs e)
  62                 {
  63                         if (!document.PrinterSettings.IsValid)
  64                                 throw new InvalidPrinterException(document.PrinterSettings);
  65
  66                         /* maybe we should reuse the images, and clear them? */
  67                         foreach (PreviewPageInfo pi in pageInfoList)
  68                                 pi.Image.Dispose ();
  69
  70                         pageInfoList.Clear ();
  71                 }
  72
  73                 [MonoTODO]
  74                 public override void OnEndPrint(PrintDocument document, PrintEventArgs e)
  75                 {
  76                 }
  77
  78                 [MonoTODO]
  79                 public override Graphics OnStartPage(PrintDocument document, PrintPageEventArgs e)
  80                 {
  81                         Image image = new Bitmap (e.PageSettings.PaperSize.Width * e.PageSettings.PrinterResolution.X / 100,
  82                                                   e.PageSettings.PaperSize.Height * e.PageSettings.PrinterResolution.Y / 100);
  83
  84                         PreviewPageInfo info = new PreviewPageInfo (image, new Size (e.PageSettings.PaperSize.Width,
  85                                                                                      e.PageSettings.PaperSize.Height));
  86
  87                         pageInfoList.Add (info);
  88
  89                         Graphics g = Graphics.FromImage (info.Image);
  90                         g.FillRectangle (new SolidBrush (Color.White), new Rectangle (new Point (0,0), new Size (image.Width, image.Height)));
  91
  92                         g.ScaleTransform (e.PageSettings.PrinterResolution.X / 100.0f, e.PageSettings.PrinterResolution.Y / 100.0f);
  93
  94                         return g;
  95                 }
  96
  97                 public virtual bool UseAntiAlias {
  98                         get{ return useantialias; }
  99                         set{ useantialias = value; }
 100                 }
 101
 102                 public PreviewPageInfo [] GetPreviewPageInfo()
 103                 {
 104                         PreviewPageInfo [] pi = new PreviewPageInfo[pageInfoList.Count];
 105                         pageInfoList.CopyTo (pi);
 106                         return pi;
 107                 }
 108
 109         }
 110 }