mcs/class/Mono.Cairo/Mono.Cairo/Pattern.cs

   1 //
   2 // Mono.Cairo.Pattern.cs
   3 //
   4 // Author: Jordi Mas (jordi@ximian.com)
   5 //         Hisham Mardam Bey (hisham.mardambey@gmail.com)
   6 // (C) Ximian Inc, 2004.
   7 //
   8 // Copyright (C) 2004 Novell, Inc (http://www.novell.com)
   9 //
  10 // Permission is hereby granted, free of charge, to any person obtaining
  11 // a copy of this software and associated documentation files (the
  12 // "Software"), to deal in the Software without restriction, including
  13 // without limitation the rights to use, copy, modify, merge, publish,
  14 // distribute, sublicense, and/or sell copies of the Software, and to
  15 // permit persons to whom the Software is furnished to do so, subject to
  16 // the following conditions:
  17 //
  18 // The above copyright notice and this permission notice shall be
  19 // included in all copies or substantial portions of the Software.
  20 //
  21 // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
  22 // EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  23 // MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
  24 // NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
  25 // LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
  26 // OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
  27 // WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  28 //
  29
  30 using System;
  31 using System.Collections;
  32
  33 namespace Cairo {
  34
  35         public class Pattern : IDisposable
  36         {
  37                 protected IntPtr pattern = IntPtr.Zero;
  38
  39                 internal static Pattern Lookup (IntPtr pattern)
  40                 {
  41                         if (pattern == IntPtr.Zero)
  42                                 return null;
  43
  44                         object x = patterns [pattern];
  45                         if (x != null)
  46                                 return (Pattern) x;
  47
  48                         PatternType pt = NativeMethods.cairo_pattern_get_type (pattern);
  49                         switch (pt) {
  50                         case PatternType.Solid:
  51                                 return new SolidPattern (pattern);
  52                         case PatternType.Surface:
  53                                 return new SurfacePattern (pattern);
  54                         case PatternType.Linear:
  55                                 return new LinearGradient (pattern);
  56                         case PatternType.Radial:
  57                                 return new RadialGradient (pattern);
  58                         default:
  59                                 return new Pattern (pattern);
  60                         }
  61                 }
  62
  63                 protected Pattern ()
  64                 {
  65                 }
  66
  67                 static Hashtable patterns = new Hashtable ();
  68
  69                 internal Pattern (IntPtr handle)
  70                 {
  71                         lock (patterns){
  72                                 patterns [ptr] = this;
  73                         }
  74
  75                         Handle = handle;
  76                         if (CairoDebug.Enabled)
  77                                 CairoDebug.OnAllocated (handle);
  78                 }
  79
  80                 ~Pattern ()
  81                 {
  82                         Dispose (false);
  83                 }
  84
  85                 [Obsolete ("Use the SurfacePattern constructor")]
  86                 public Pattern (Surface surface)
  87                 {
  88                         pattern = NativeMethods.cairo_pattern_create_for_surface (surface.Handle);
  89                 }
  90
  91                 protected void Reference ()
  92                 {
  93                         NativeMethods.cairo_pattern_reference (pattern);
  94                 }
  95
  96                 public void Dispose ()
  97                 {
  98                         Dispose (true);
  99                         GC.SuppressFinalize (this);
 100                 }
 101
 102                 protected virtual void Dispose (bool disposing)
 103                 {
 104                         if (!disposing || CairoDebug.Enabled)
 105                                 CairoDebug.OnDisposed<Pattern> (Handle, disposing);
 106
 107                         if (!disposing|| Handle == IntPtr.Zero)
 108                                 return;
 109
 110                         NativeMethods.cairo_pattern_destroy (Handle);
 111                         Handle = IntPtr.Zero;
 112                         lock (patterns){
 113                                 patterns.Remove (this);
 114                         }
 115                 }
 116
 117                 [Obsolete ("Use Dispose()")]
 118                 public void Destroy ()
 119                 {
 120                         NativeMethods.cairo_pattern_destroy (pattern);
 121                 }
 122
 123                 public Status Status
 124                 {
 125                         get { return NativeMethods.cairo_pattern_status (pattern); }
 126                 }
 127
 128                 public Extend Extend
 129                 {
 130                         get { return NativeMethods.cairo_pattern_get_extend (pattern); }
 131                         set { NativeMethods.cairo_pattern_set_extend (pattern, value); }
 132                 }
 133
 134                 public Matrix Matrix {
 135                         set {
 136                                 NativeMethods.cairo_pattern_set_matrix (pattern, value);
 137                         }
 138
 139                         get {
 140                                 Matrix m = new Matrix ();
 141                                 NativeMethods.cairo_pattern_get_matrix (pattern, m);
 142                                 return m;
 143                         }
 144                 }
 145
 146                 public IntPtr Handle {
 147                         get { return pattern; }
 148                         private set { pattern = value; }
 149                 }
 150                 public IntPtr Pointer {
 151                         get { return pattern; }
 152                 }
 153
 154                 public PatternType PatternType {
 155                         get { return NativeMethods.cairo_pattern_get_type (pattern); }
 156                 }
 157         }
 158 }
 159