Class: Cairo::RasterSourcePattern

Inherits:
Pattern
  • Object
show all
Defined in:
ext/cairo/rb_cairo_pattern.c

Instance Method Summary collapse

Methods inherited from Pattern

#extend, #filter, gradient_supported?, linear_supported?, #matrix, mesh_supported?, radial_supported?, raster_source_supported?, #set_extend, #set_filter, #set_matrix, solid_supported?, supported?, surface_supported?

Constructor Details

#initialize ⇒ Object 



900
901
902
903
904
905
906
907
908
909
910
911
912
913
914
915
916
917
918
919
920
921
922
923
924
925
926
927
928
929
930
931
932
933
934
935
936
937
938
939
940
941
942
943
944
945
 
# File 'ext/cairo/rb_cairo_pattern.c', line 900

static VALUE
cr_raster_source_pattern_initialize (int argc, VALUE *argv, VALUE self)
{
  cairo_pattern_t *pattern;
  cairo_content_t content;
  int width, height;
  VALUE arg1, arg2, arg3;

  rb_scan_args (argc, argv, "21", &arg1, &arg2, &arg3);

  if (argc == 2)
    {
      content = CAIRO_CONTENT_COLOR_ALPHA;
      width = NUM2INT (arg1);
      height = NUM2INT (arg2);
    }
  else
    {
      content = RVAL2CRCONTENT (arg1);
      width = NUM2INT (arg2);
      height = NUM2INT (arg3);
    }

  pattern = cairo_pattern_create_raster_source (RVAL2POINTER (self),
                                                content, width, height);
  cr_pattern_check_status (pattern);

  RTYPEDDATA_DATA (self) = pattern;
  rb_iv_set (self, "@acquire", Qnil);
  rb_iv_set (self, "@release", Qnil);
  rb_iv_set (self, "@snapshot", Qnil);
  rb_iv_set (self, "@copy", Qnil);
  rb_iv_set (self, "@finish", Qnil);

  cairo_raster_source_pattern_set_acquire (pattern,
                                           cr_raster_source_acquire_callback,
                                           cr_raster_source_release_callback);
  cairo_raster_source_pattern_set_snapshot (pattern,
                                            cr_raster_source_snapshot_callback);
  cairo_raster_source_pattern_set_copy (pattern,
                                        cr_raster_source_copy_callback);
  cairo_raster_source_pattern_set_finish (pattern,
                                          cr_raster_source_finish_callback);

  return Qnil;
}

Instance Method Details

#acquire ⇒ Object 



947
948
949
950
951
952
953
954
955
956
957
958
959
960
961
962
 
# File 'ext/cairo/rb_cairo_pattern.c', line 947

static VALUE
cr_raster_source_pattern_acquire (VALUE self)
{
  if (!rb_block_given_p ())
    {
      VALUE inspected;

      inspected = rb_funcall (self, id_inspect, 0);
      rb_raise (rb_eArgError, "acquire block is missing: %s",
                RVAL2CSTR (inspected));
    }

  rb_iv_set (self, "@acquire", rb_block_proc ());

  return self;
}

#copy ⇒ Object 



998
999
1000
1001
1002
1003
1004
1005
1006
1007
1008
1009
1010
1011
1012
1013
 
# File 'ext/cairo/rb_cairo_pattern.c', line 998

static VALUE
cr_raster_source_pattern_copy (VALUE self)
{
  if (!rb_block_given_p ())
    {
      VALUE inspected;

      inspected = rb_funcall (self, id_inspect, 0);
      rb_raise (rb_eArgError, "copy block is missing: %s",
                RVAL2CSTR (inspected));
    }

  rb_iv_set (self, "@copy", rb_block_proc ());

  return self;
}

#finish ⇒ Object 



1015
1016
1017
1018
1019
1020
1021
1022
1023
1024
1025
1026
1027
1028
1029
1030
 
# File 'ext/cairo/rb_cairo_pattern.c', line 1015

static VALUE
cr_raster_source_pattern_finish (VALUE self)
{
  if (!rb_block_given_p ())
    {
      VALUE inspected;

      inspected = rb_funcall (self, id_inspect, 0);
      rb_raise (rb_eArgError, "finish block is missing: %s",
                RVAL2CSTR (inspected));
    }

  rb_iv_set (self, "@finish", rb_block_proc ());

  return self;
}

#release ⇒ Object 



964
965
966
967
968
969
970
971
972
973
974
975
976
977
978
979
 
# File 'ext/cairo/rb_cairo_pattern.c', line 964

static VALUE
cr_raster_source_pattern_release (VALUE self)
{
  if (!rb_block_given_p ())
    {
      VALUE inspected;

      inspected = rb_funcall (self, id_inspect, 0);
      rb_raise (rb_eArgError, "release block is missing: %s",
                RVAL2CSTR (inspected));
    }

  rb_iv_set (self, "@release", rb_block_proc ());

  return self;
}

#snapshot ⇒ Object 



981
982
983
984
985
986
987
988
989
990
991
992
993
994
995
996
 
# File 'ext/cairo/rb_cairo_pattern.c', line 981

static VALUE
cr_raster_source_pattern_snapshot (VALUE self)
{
  if (!rb_block_given_p ())
    {
      VALUE inspected;

      inspected = rb_funcall (self, id_inspect, 0);
      rb_raise (rb_eArgError, "snapshot block is missing: %s",
                RVAL2CSTR (inspected));
    }

  rb_iv_set (self, "@snapshot", rb_block_proc ());

  return self;
}