mcs/class/System.Drawing/System.Drawing.Text/FontCollection.cs

   1 //
   2 // System.Drawing.Text.FontCollection.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 //
   8
   9 //
  10 // Copyright (C) 2004 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 using System;
  32 using System.Drawing;
  33 using System.Runtime.InteropServices;
  34
  35 namespace System.Drawing.Text {
  36
  37         public abstract class FontCollection : IDisposable {
  38
  39                 internal IntPtr nativeFontCollection = IntPtr.Zero;
  40
  41                 internal FontCollection ()
  42                 {
  43                 }
  44
  45                 internal FontCollection (IntPtr ptr)
  46                 {
  47                         nativeFontCollection = ptr;
  48                 }
  49
  50                 // methods
  51                 public void Dispose()
  52                 {
  53                         Dispose (true);
  54                         GC.SuppressFinalize (true);
  55                 }
  56
  57                 protected virtual void Dispose (bool disposing)
  58                 {
  59                 }
  60
  61                 // properties
  62                 public FontFamily[] Families
  63                 {
  64                         get {
  65                                 int found;
  66                                 int returned;
  67                                 Status status;
  68                                 FontFamily[] families;
  69
  70                                 status = GDIPlus.GdipGetFontCollectionFamilyCount (nativeFontCollection, out found);
  71                                 GDIPlus.CheckStatus (status);
  72
  73                                 int nSize =  Marshal.SizeOf (IntPtr.Zero);
  74                                 IntPtr dest = Marshal.AllocHGlobal (nSize * found);
  75
  76                                 status = GDIPlus.GdipGetFontCollectionFamilyList(nativeFontCollection, found, dest, out returned);
  77
  78                                 IntPtr[] ptrAr = new IntPtr [returned];
  79                                 int pos = dest.ToInt32 ();
  80                                 for ( int i = 0; i < returned ; i++, pos+=nSize)
  81                                         ptrAr[i] = (IntPtr)Marshal.PtrToStructure ((IntPtr)pos, typeof(IntPtr));
  82
  83                                 Marshal.FreeHGlobal (dest);
  84
  85                                 families = new FontFamily [returned];
  86                                 for ( int i = 0; i < returned; i++ )
  87                                         families[i] = new FontFamily (ptrAr[i]);
  88
  89                                 return families;
  90                         }
  91                 }
  92
  93                 ~FontCollection()
  94                 {
  95                         Dispose (false);
  96                 }
  97
  98         }
  99
 100 }