static VALUE
cr_push_group (int argc, VALUE *argv, VALUE self)
{
VALUE result = Qnil;
VALUE content, pop_to_source;
rb_scan_args (argc, argv, "02", &content, &pop_to_source);
if (NIL_P(content))
cairo_push_group (_SELF);
else
cairo_push_group_with_content (_SELF, RVAL2CRCONTENT(content));
cr_check_status (_SELF);
if (rb_block_given_p ())
{
int state = 0;
if (NIL_P (pop_to_source))
pop_to_source = Qtrue;
result = rb_protect (rb_yield, self, &state);
if (cairo_status(_SELF) == CAIRO_STATUS_SUCCESS)
{
if (RVAL2CBOOL (pop_to_source))
cr_pop_group_to_source (self);
else
result = cr_pop_group (self);
}
if (state)
rb_jump_tag (state);
}
return result;
}
static VALUE
cr_surface_create_similar (VALUE self, VALUE content, VALUE width, VALUE height)
{
cairo_surface_t *surface;
surface = cairo_surface_create_similar (RVAL2CRSURFACE (self),
RVAL2CRCONTENT (content),
NUM2INT (width), NUM2INT (height));
cr_surface_check_status (surface);
return CRSURFACE2RVAL_WITH_DESTROY (surface);
}
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);
DATA_PTR (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;
}
