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 using System;
   9 using System.Drawing;
  10 using System.Runtime.InteropServices;
  11
  12 namespace System.Drawing.Text {
  13
  14         public abstract class FontCollection : IDisposable {
  15
  16                 internal IntPtr nativeFontCollection = IntPtr.Zero;
  17
  18                 internal FontCollection ()
  19                 {
  20                 }
  21
  22         internal FontCollection ( IntPtr ptr )
  23                 {
  24                         nativeFontCollection = ptr;
  25                 }
  26
  27                 // methods
  28                 public void Dispose()
  29                 {
  30                 }
  31
  32
  33                 protected virtual void Dispose (bool disposing)
  34                 {
  35                 }
  36
  37                 // properties
  38                 public FontFamily[] Families
  39                 {
  40                         get {
  41                                 int found;
  42                                 int returned;
  43                                 Status status;
  44                                 FontFamily[] families;
  45
  46                                 Console.WriteLine("nativeFontCollection " + nativeFontCollection);
  47
  48                                 status = GDIPlus.GdipGetFontCollectionFamilyCount (nativeFontCollection, out found);
  49
  50                                 int nSize =  Marshal.SizeOf (IntPtr.Zero);
  51                                 IntPtr dest = Marshal.AllocHGlobal (nSize * found);
  52
  53                                 status = GDIPlus.GdipGetFontCollectionFamilyList(nativeFontCollection, found, dest, out returned);
  54
  55                                 IntPtr[] ptrAr = new IntPtr [returned];
  56                                 int pos = dest.ToInt32 ();
  57                                 for ( int i = 0; i < returned ; i++, pos+=nSize)
  58                                         ptrAr[i] = (IntPtr)Marshal.PtrToStructure ((IntPtr)pos, typeof(IntPtr));
  59
  60                                 Marshal.FreeHGlobal (dest);
  61
  62                                 families = new FontFamily [returned];
  63                                 for ( int i = 0; i < returned; i++ )
  64                                         families[i] = new FontFamily (ptrAr[i]);
  65
  66                                 return families;
  67                         }
  68                 }
  69
  70                 ~FontCollection()
  71                 {
  72                         Dispose (false);
  73                 }
  74
  75         }
  76
  77 }