basis/gdk/pixbuf/ffi/ffi.factor

   1 ! Copyright (C) 2010 Anton Gorenko.
   2 ! See http://factorcode.org/license.txt for BSD license.
   3 USING: alien alien.c-types alien.data alien.libraries
   4 alien.syntax combinators gio.ffi glib.ffi gobject-introspection
   5 gobject-introspection.standard-types kernel libc sequences
   6 system vocabs ;
   7 IN: gdk.pixbuf.ffi
   8
   9 << "gio.ffi" require >>
  10
  11 LIBRARY: gdk.pixbuf
  12
  13 LIBRARY-UNIX: gdk.pixbuf cdecl "libgdk_pixbuf-2.0.so"
  14 LIBRARY-MACOSX: gdk.pixbuf cdecl "libgdk_pixbuf-2.0.dylib"
  15 LIBRARY-WINDOWS: gdk.pixbuf cdecl "libgdk_pixbuf-2.0-0.dll"
  16
  17 GIR: vocab:gdk/pixbuf/GdkPixbuf-2.0.gir
  18
  19 ! <workaround incorrect return-values in gir
  20
  21 FORGET: gdk_pixbuf_get_pixels
  22 FUNCTION: guint8* gdk_pixbuf_get_pixels ( GdkPixbuf* pixbuf )
  23
  24 FORGET: gdk_pixbuf_new_from_data
  25 FUNCTION: GdkPixbuf* gdk_pixbuf_new_from_data ( guint8* data,
  26                                                 GdkColorspace colorspace,
  27                                                 gboolean has_alpha,
  28                                                 int bits_per_sample,
  29                                                 int width,
  30                                                 int height,
  31                                                 int rowstride,
  32                                                 GdkPixbufDestroyNotify destroy_fn,
  33                                                 gpointer destroy_fn_data )
  34
  35 FORGET: gdk_pixbuf_save_to_bufferv
  36 FUNCTION: gboolean gdk_pixbuf_save_to_bufferv ( GdkPixbuf* pixbuf,
  37                                                 guint8** data,
  38                                                 gsize* buffer_size,
  39                                                 c-string type,
  40                                                 char **option_keys,
  41                                                 char **option_values,
  42                                                 GError **error )
  43
  44
  45 ! workaround>
  46
  47 : data>GInputStream ( data -- GInputStream )
  48     [ malloc-byte-array &free ] [ length ] bi
  49     f g_memory_input_stream_new_from_data ;
  50
  51 : GInputStream>GdkPixbuf ( GInputStream -- GdkPixbuf )
  52     f { { pointer: GError initial: f } }
  53     [ gdk_pixbuf_new_from_stream ] with-out-parameters
  54     handle-GError ;