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
  43                 public ImageSurface (string filename)
  44                 {
  45                         surface = CairoAPI.cairo_image_surface_create_from_png (filename);
  46                         lock (surfaces.SyncRoot){
  47                                 surfaces [surface] = this;
  48                         }
  49                 }
  50
  51                 public int Width {
  52                         get { return CairoAPI.cairo_image_surface_get_width (surface); }
  53                 }
  54
  55                 public int Height {
  56                         get { return CairoAPI.cairo_image_surface_get_height (surface); }
  57                 }
  58
  59         }
  60
  61         #if UNSTABLE
  62         public class PdfSurface : Surface
  63         {
  64                 public PdfSurface (string filename, double width, double height)
  65                 {
  66                         surface = CairoAPI.cairo_pdf_surface_create (filename, width, height);
  67                         lock (surfaces.SyncRoot){
  68                                 surfaces [surface] = this;
  69                         }
  70                 }
  71
  72                 public void SetDPI (double x_dpi, double y_dpi)
  73                 {
  74                         CairoAPI.cairo_pdf_surface_set_dpi (surface, x_dpi, y_dpi);
  75                 }
  76         }
  77
  78         public class PostscriptSurface : Surface
  79         {
  80                 public PostscriptSurface (string filename, double width, double height)
  81                 {
  82                         surface = CairoAPI.cairo_ps_surface_create (filename, width, height);
  83                         lock (surfaces.SyncRoot){
  84                                 surfaces [surface] = this;
  85                         }
  86                 }
  87
  88                 public void SetDPI (double x_dpi, double y_dpi)
  89                 {
  90                         CairoAPI.cairo_ps_surface_set_dpi (surface, x_dpi, y_dpi);
  91                 }
  92         }
  93         #endif
  94
  95         public class Win32Surface : Surface
  96         {
  97                 public Win32Surface (IntPtr hdc)
  98                 {
  99                         surface = CairoAPI.cairo_win32_surface_create (hdc);
 100                         lock (surfaces.SyncRoot){
 101                                 surfaces [surface] = this;
 102                         }
 103                 }
 104         }
 105
 106         public class XlibSurface : Surface
 107         {
 108                 public XlibSurface (IntPtr display, IntPtr drawable, IntPtr visual, int width, int height)
 109                 {
 110                         surface = CairoAPI.cairo_xlib_surface_create (display, drawable, visual, width, height);
 111                         lock (surfaces.SyncRoot){
 112                                 surfaces [surface] = this;
 113                         }
 114                 }
 115
 116                 /* FIXME: has the same parameters as above
 117                 public XlibSurface (IntPtr display, IntPtr bitmap, IntPtr screen, int width, int height)
 118                 {
 119                         surface = CairoAPI.cairo_xlib_surface_create_for_bitmap (display, bitmap, screen, width, height);
 120                         lock (surfaces.SyncRoot){
 121                                 surfaces [surface] = this;
 122                         }
 123                 }
 124                 */
 125
 126                 public void SetDrawable (IntPtr drawable, int width, int height)
 127                 {
 128                         CairoAPI.cairo_xlib_surface_set_drawable (surface, drawable, width, height);
 129                 }
 130
 131                 public void SetSize (int width, int height)
 132                 {
 133                         CairoAPI.cairo_xlib_surface_set_size (surface, width, height);
 134                 }
 135         }
 136
 137         public class Surface : IDisposable
 138         {
 139                 protected static Hashtable surfaces = new Hashtable ();
 140                 internal IntPtr surface = IntPtr.Zero;
 141
 142                 protected Surface()
 143                 {}
 144
 145                 private Surface (IntPtr ptr, bool owns)
 146                 {
 147                         surface = ptr;
 148                         lock (surfaces.SyncRoot){
 149                                 surfaces [ptr] = this;
 150                         }
 151                         if (!owns)
 152                                 CairoAPI.cairo_surface_reference (ptr);
 153                 }
 154
 155                 static internal Surface LookupExternalSurface (IntPtr p)
 156                 {
 157                         lock (surfaces.SyncRoot){
 158                                 object o = surfaces [p];
 159                                 if (o == null){
 160                                         return new Surface (p, false);
 161                                 }
 162                                 return (Surface) o;
 163                         }
 164                 }
 165
 166                 public static Cairo.Surface CreateForImage (
 167                         string data, Cairo.Format format, int width, int height, int stride)
 168                 {
 169                         IntPtr p = CairoAPI.cairo_image_surface_create_for_data (
 170                                 data, format, width, height, stride);
 171
 172                         return new Cairo.Surface (p, true);
 173                 }
 174
 175                 public static Cairo.Surface CreateForImage (
 176                         Cairo.Format format, int width, int height)
 177                 {
 178                         IntPtr p = CairoAPI.cairo_image_surface_create (
 179                                 format, width, height);
 180
 181                         return new Cairo.Surface (p, true);
 182                 }
 183
 184
 185                 public Cairo.Surface CreateSimilar (
 186                         Cairo.Content content, int width, int height)
 187                 {
 188                         IntPtr p = CairoAPI.cairo_surface_create_similar (
 189                                 this.Handle, content, width, height);
 190
 191                         return new Cairo.Surface (p, true);
 192                 }
 193
 194                 ~Surface ()
 195                 {
 196                         Dispose (false);
 197                 }
 198
 199                 public void Show (Graphics gr, int width, int height)
 200                 {
 201                         CairoAPI.cairo_set_source_surface (gr.Handle, surface, width, height);
 202                         CairoAPI.cairo_paint (gr.Handle);
 203                 }
 204
 205                 void IDisposable.Dispose ()
 206                 {
 207                         Dispose (true);
 208                         GC.SuppressFinalize (this);
 209                 }
 210
 211                 protected virtual void Dispose (bool disposing)
 212                 {
 213                         if (surface == (IntPtr) 0)
 214                                 return;
 215                         lock (surfaces.SyncRoot){
 216                                 surfaces.Remove (surface);
 217                         }
 218                         CairoAPI.cairo_surface_destroy (surface);
 219                         surface = (IntPtr) 0;
 220                 }
 221
 222                 public Cairo.Status Finish ()
 223                 {
 224                         return CairoAPI.cairo_surface_finish (surface);
 225                 }
 226
 227                 public IntPtr Handle {
 228                         get { return surface; }
 229                 }
 230
 231                 public PointD DeviceOffset {
 232                         set { CairoAPI.cairo_surface_set_device_offset (surface,
 233                                                                     value.X,
 234                                                                     value.Y);
 235                         }
 236                 }
 237
 238                 public void Destroy()
 239                 {
 240                         CairoAPI.cairo_surface_destroy (surface);
 241                 }
 242
 243                 public void WriteToPng (string filename)
 244                 {
 245                         CairoAPI.cairo_surface_write_to_png (surface, filename);
 246                 }
 247
 248                 public IntPtr Pointer {
 249                         get { return surface; }
 250                 }
 251
 252                                 public Status Status {
 253                                         get { return CairoAPI.cairo_surface_status (surface); }
 254                                 }
 255
 256         }
 257 }