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 IFontCollection implementation;
  17                 internal IntPtr nativeFontCollection = IntPtr.Zero;
  18
  19                 internal FontCollection ()
  20                 {
  21                 }
  22
  23         internal FontCollection (IntPtr ptr)
  24                 {
  25                         nativeFontCollection = ptr;
  26                 }
  27
  28                 // methods
  29                 public void Dispose()
  30                 {
  31                         Dispose (true);
  32                         System.GC.SuppressFinalize (this);
  33                 }
  34
  35                 [MonoTODO]
  36                 protected virtual void Dispose (bool disposing)
  37                 {
  38                         //Nothing for now
  39                 }
  40
  41                 // properties
  42                 public FontFamily[] Families
  43                 {
  44                         get {
  45                                 int found;
  46                                 int returned;
  47                                 Status status;
  48
  49                                 Console.WriteLine("came to Families method of FontCollection");
  50
  51                                 status = GDIPlus.GdipGetFontCollectionFamilyCount( nativeFontCollection, out found);
  52                                 if (status != Status.Ok){
  53                                         throw new Exception ("Error calling GDIPlus.GdipGetFontCollectionFamilyCount: " +status);
  54                                 }
  55
  56                                 Console.WriteLine("FamilyFont count returned in Families method of FontCollection " + found);
  57
  58                                 int nSize =  Marshal.SizeOf(IntPtr.Zero);
  59                                 IntPtr dest = Marshal.AllocHGlobal(nSize* found);
  60
  61                                 status = GDIPlus.GdipGetFontCollectionFamilyList( nativeFontCollection, found, dest, out returned);
  62                                 if (status != Status.Ok){
  63                                         Console.WriteLine("Error calling GDIPlus.GdipGetFontCollectionFamilyList: " +status);
  64                                         throw new Exception ("Error calling GDIPlus.GdipGetFontCollectionFamilyList: " +status);
  65                                 }
  66
  67                                 IntPtr[] ptrAr = new IntPtr[returned];
  68
  69                                 int pos = dest.ToInt32();
  70                                 for (int i=0; i<returned; i++, pos+=nSize)
  71                                         ptrAr[i] = (IntPtr) Marshal.PtrToStructure((IntPtr)pos, typeof(IntPtr));
  72
  73                                 Marshal.FreeHGlobal(dest);
  74
  75                                 FontFamily [] familyList = new FontFamily[returned];
  76                                 Console.WriteLine("No of FontFamilies returned in Families method of FontCollection " + returned);
  77                                 for( int i = 0 ; i < returned ; i++ )
  78                                 {
  79                                         Console.WriteLine("Handle returned " + ptrAr[i]);
  80                                         familyList [i] = new FontFamily(ptrAr[i]);
  81                                 }
  82
  83                                 return familyList;
  84                         }
  85                 }
  86
  87                 ~FontCollection()
  88                 {
  89                         Dispose (false);
  90                 }
  91
  92         }
  93
  94 }