class/System.Drawing/System.Drawing.Text/PrivateFontCollection.cs

   1 //
   2 // System.Drawing.Text.PrivateFontCollection.cs
   3 //
   4 // (C) 2002 Ximian, Inc.  http://www.ximian.com
   5 // Author: Everaldo Canuto everaldo.canuto@bol.com.br
   6 //              Sanjay Gupta (gsanjay@novell.com)
   7 //              Peter Dennis Bartok (pbartok@novell.com)
   8 //
   9 //
  10 // Copyright (C) 2004 - 2006 Novell, Inc (http://www.novell.com)
  11 //
  12 // Permission is hereby granted, free of charge, to any person obtaining
  13 // a copy of this software and associated documentation files (the
  14 // "Software"), to deal in the Software without restriction, including
  15 // without limitation the rights to use, copy, modify, merge, publish,
  16 // distribute, sublicense, and/or sell copies of the Software, and to
  17 // permit persons to whom the Software is furnished to do so, subject to
  18 // the following conditions:
  19 //
  20 // The above copyright notice and this permission notice shall be
  21 // included in all copies or substantial portions of the Software.
  22 //
  23 // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
  24 // EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  25 // MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
  26 // NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
  27 // LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
  28 // OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
  29 // WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  30 //
  31
  32 using System.IO;
  33 using System.Security.Permissions;
  34 using System.Runtime.InteropServices;
  35
  36 namespace System.Drawing.Text {
  37
  38 #if !NET_2_0
  39         [ComVisible(false)]
  40 #endif
  41         public sealed class PrivateFontCollection : FontCollection {
  42
  43                 // constructors
  44
  45                 public PrivateFontCollection ()
  46                 {
  47                         Status status = GDIPlus.GdipNewPrivateFontCollection (out nativeFontCollection);
  48                         GDIPlus.CheckStatus (status);
  49                 }
  50
  51                 // methods
  52                 public void AddFontFile (string filename)
  53                 {
  54                         if (filename == null)
  55                                 throw new ArgumentNullException ("filename");
  56
  57                         // this ensure the filename is valid (or throw the correct exception)
  58                         string fname = Path.GetFullPath (filename);
  59
  60                         if (!File.Exists (fname))
  61                                 throw new FileNotFoundException ();
  62
  63                         // note: MS throw the same exception FileNotFoundException if the file exists but isn't a valid font file
  64                         Status status = GDIPlus.GdipPrivateAddFontFile (nativeFontCollection, fname);
  65                         GDIPlus.CheckStatus (status);
  66                 }
  67
  68                 [SecurityPermission (SecurityAction.Demand, UnmanagedCode = true)]
  69                 public void AddMemoryFont (IntPtr memory, int length)
  70                 {
  71                         // note: MS throw FileNotFoundException if something is bad with the data (except for a null pointer)
  72                         Status status = GDIPlus.GdipPrivateAddMemoryFont (nativeFontCollection, memory, length);
  73                         GDIPlus.CheckStatus (status);
  74                 }
  75
  76                 // methods
  77                 protected override void Dispose (bool disposing)
  78                 {
  79                         if (nativeFontCollection!=IntPtr.Zero) {
  80                                 GDIPlus.GdipDeletePrivateFontCollection (ref nativeFontCollection);
  81
  82                                 // This must be zeroed out, otherwise our base will also call
  83                                 // the GDI+ delete method on unix platforms. We're keeping the
  84                                 // base.Dispose() call in case other cleanup ever gets added there
  85                                 nativeFontCollection = IntPtr.Zero;
  86                         }
  87
  88                         base.Dispose (disposing);
  89                 }
  90         }
  91 }