mcs/class/Mono.Cairo/Mono.Cairo/Surface.cs

   1 //
   2 // Mono.Cairo.CairoSurfaceObject.cs
   3 //
   4 // Authors:
   5 //    Duncan Mak
   6 //    Miguel de Icaza.
   7 //
   8 // (C) Ximian Inc, 2003.
   9 // (C) Novell, Inc. 2003.
  10 //
  11 // This is an OO wrapper API for the Cairo API
  12 //
  13 // Copyright (C) 2004 Novell, Inc (http://www.novell.com)
  14 //
  15 // Permission is hereby granted, free of charge, to any person obtaining
  16 // a copy of this software and associated documentation files (the
  17 // "Software"), to deal in the Software without restriction, including
  18 // without limitation the rights to use, copy, modify, merge, publish,
  19 // distribute, sublicense, and/or sell copies of the Software, and to
  20 // permit persons to whom the Software is furnished to do so, subject to
  21 // the following conditions:
  22 //
  23 // The above copyright notice and this permission notice shall be
  24 // included in all copies or substantial portions of the Software.
  25 //
  26 // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
  27 // EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  28 // MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
  29 // NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
  30 // LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
  31 // OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
  32 // WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  33 //
  34
  35 using System;
  36 using System.Collections;
  37
  38 namespace Cairo {
  39
  40         public class ImageSurface : Surface
  41         {
  42                 public ImageSurface (Format format, int width, int height)
  43                 {
  44                         surface = CairoAPI.cairo_image_surface_create (format, width, height);
  45                         lock (surfaces.SyncRoot){
  46                                 surfaces [surface] = this;
  47                         }
  48                 }
  49
  50                 public ImageSurface (string data, Cairo.Format format, int width, int height, int stride)
  51                 {
  52                         surface = CairoAPI.cairo_image_surface_create_for_data (data, format, width, height, stride);
  53                         lock (surfaces.SyncRoot){
  54                                 surfaces [surface] = this;
  55                         }
  56                 }
  57
  58                 public ImageSurface (string filename)
  59                 {
  60                         surface = CairoAPI.cairo_image_surface_create_from_png (filename);
  61                         lock (surfaces.SyncRoot){
  62                                 surfaces [surface] = this;
  63                         }
  64                 }
  65
  66                 public int Width {
  67                         get { return CairoAPI.cairo_image_surface_get_width (surface); }
  68                 }
  69
  70                 public int Height {
  71                         get { return CairoAPI.cairo_image_surface_get_height (surface); }
  72                 }
  73
  74         }
  75
  76         #if UNSTABLE
  77         public class PdfSurface : Surface
  78         {
  79                 public PdfSurface (string filename, double width, double height)
  80                 {
  81                         surface = CairoAPI.cairo_pdf_surface_create (filename, width, height);
  82                         lock (surfaces.SyncRoot){
  83                                 surfaces [surface] = this;
  84                         }
  85                 }
  86
  87                 public void SetDPI (double x_dpi, double y_dpi)
  88                 {
  89                         CairoAPI.cairo_pdf_surface_set_dpi (surface, x_dpi, y_dpi);
  90                 }
  91         }
  92
  93         public class PostscriptSurface : Surface
  94         {
  95                 public PostscriptSurface (string filename, double width, double height)
  96                 {
  97                         surface = CairoAPI.cairo_ps_surface_create (filename, width, height);
  98                         lock (surfaces.SyncRoot){
  99                                 surfaces [surface] = this;
 100                         }
 101                 }
 102
 103                 public void SetDPI (double x_dpi, double y_dpi)
 104                 {
 105                         CairoAPI.cairo_ps_surface_set_dpi (surface, x_dpi, y_dpi);
 106                 }
 107         }
 108         #endif
 109
 110         public class Win32Surface : Surface
 111         {
 112                 public Win32Surface (IntPtr hdc)
 113                 {
 114                         surface = CairoAPI.cairo_win32_surface_create (hdc);
 115                         lock (surfaces.SyncRoot){
 116                                 surfaces [surface] = this;
 117                         }
 118                 }
 119         }
 120
 121         public class XlibSurface : Surface
 122         {
 123                 public XlibSurface (IntPtr display, IntPtr drawable, IntPtr visual, int width, int height)
 124                 {
 125                         surface = CairoAPI.cairo_xlib_surface_create (display, drawable, visual, width, height);
 126                         lock (surfaces.SyncRoot){
 127                                 surfaces [surface] = this;
 128                         }
 129                 }
 130
 131                 /* FIXME: has the same parameters as above
 132                 public XlibSurface (IntPtr display, IntPtr bitmap, IntPtr screen, int width, int height)
 133                 {
 134                         surface = CairoAPI.cairo_xlib_surface_create_for_bitmap (display, bitmap, screen, width, height);
 135                         lock (surfaces.SyncRoot){
 136                                 surfaces [surface] = this;
 137                         }
 138                 }
 139                 */
 140
 141                 public void SetDrawable (IntPtr drawable, int width, int height)
 142                 {
 143                         CairoAPI.cairo_xlib_surface_set_drawable (surface, drawable, width, height);
 144                 }
 145
 146                 public void SetSize (int width, int height)
 147                 {
 148                         CairoAPI.cairo_xlib_surface_set_size (surface, width, height);
 149                 }
 150         }
 151
 152         public class Surface : IDisposable
 153         {
 154                 protected static Hashtable surfaces = new Hashtable ();
 155                 internal IntPtr surface = IntPtr.Zero;
 156
 157                 protected Surface()
 158                 {
 159                         Console.WriteLine (Environment.StackTrace);
 160                 }
 161
 162                 private Surface (IntPtr ptr, bool owns)
 163                 {
 164                         surface = ptr;
 165                         lock (surfaces.SyncRoot){
 166                                 surfaces [ptr] = this;
 167                         }
 168                         if (!owns)
 169                                 CairoAPI.cairo_surface_reference (ptr);
 170                 }
 171
 172                 static internal Surface LookupExternalSurface (IntPtr p)
 173                 {
 174                         lock (surfaces.SyncRoot){
 175                                 object o = surfaces [p];
 176                                 if (o == null){
 177                                         return new Surface (p, false);
 178                                 }
 179                                 return (Surface) o;
 180                         }
 181                 }
 182
 183                 [Obsolete ("Use an ImageSurface constructor instead.")]
 184                 public static Cairo.Surface CreateForImage (
 185                         string data, Cairo.Format format, int width, int height, int stride)
 186                 {
 187                         IntPtr p = CairoAPI.cairo_image_surface_create_for_data (
 188                                 data, format, width, height, stride);
 189
 190                         return new Cairo.Surface (p, true);
 191                 }
 192
 193                 [Obsolete ("Use an ImageSurface constructor instead.")]
 194                 public static Cairo.Surface CreateForImage (
 195                         Cairo.Format format, int width, int height)
 196                 {
 197                         IntPtr p = CairoAPI.cairo_image_surface_create (
 198                                 format, width, height);
 199
 200                         return new Cairo.Surface (p, true);
 201                 }
 202
 203
 204                 public Cairo.Surface CreateSimilar (
 205                         Cairo.Content content, int width, int height)
 206                 {
 207                         IntPtr p = CairoAPI.cairo_surface_create_similar (
 208                                 this.Handle, content, width, height);
 209
 210                         return new Cairo.Surface (p, true);
 211                 }
 212
 213                 ~Surface ()
 214                 {
 215                         Dispose (false);
 216                 }
 217
 218                 public void Show (Graphics gr, int width, int height)
 219                 {
 220                         CairoAPI.cairo_set_source_surface (gr.Handle, surface, width, height);
 221                         CairoAPI.cairo_paint (gr.Handle);
 222                 }
 223
 224                 void IDisposable.Dispose ()
 225                 {
 226                         Dispose (true);
 227                         GC.SuppressFinalize (this);
 228                 }
 229
 230                 protected virtual void Dispose (bool disposing)
 231                 {
 232                         if (surface == (IntPtr) 0)
 233                                 return;
 234
 235                         lock (surfaces.SyncRoot)
 236                                 surfaces.Remove (surface);
 237
 238                         CairoAPI.cairo_surface_destroy (surface);
 239                         surface = (IntPtr) 0;
 240                 }
 241
 242                 public Cairo.Status Finish ()
 243                 {
 244                         return CairoAPI.cairo_surface_finish (surface);
 245                 }
 246
 247                 public IntPtr Handle {
 248                         get {
 249                                 return surface;
 250                         }
 251                 }
 252
 253                 public PointD DeviceOffset {
 254                         set {
 255                                 CairoAPI.cairo_surface_set_device_offset (surface, value.X, value.Y);
 256                         }
 257                 }
 258
 259                 public void Destroy()
 260                 {
 261                         CairoAPI.cairo_surface_destroy (surface);
 262                 }
 263
 264                 public void WriteToPng (string filename)
 265                 {
 266                         CairoAPI.cairo_surface_write_to_png (surface, filename);
 267                 }
 268
 269                 public IntPtr Pointer {
 270                         get {
 271                                 return surface;
 272                         }
 273                 }
 274
 275                 public Status Status {
 276                         get { return CairoAPI.cairo_surface_status (surface); }
 277                 }
 278
 279         }
 280 }