Class: Cairo::Region

Inherits:
Object
  • Object
show all
Defined in:
lib/cairo/region.rb,
ext/cairo/rb_cairo_region.c

Instance Method Summary collapse

Constructor Details

#initialize ⇒ Object 



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# File 'ext/cairo/rb_cairo_region.c', line 68

static VALUE
cr_region_initialize (int argc, VALUE *argv, VALUE self)
{
  cairo_region_t *region;

  if (argc == 0)
    {
      region = cairo_region_create ();
    }
  else
    {
      int i;
      cairo_rectangle_int_t *rectangles;

      rectangles = ALLOCA_N (cairo_rectangle_int_t, argc);
      for (i = 0; i < argc; i++)
        {
          VALUE rb_rectangle;

          rb_rectangle = rb_check_array_type (argv[i]);
          if (RARRAY_LEN (rb_rectangle) != 4)
            rb_raise (rb_eArgError,
                      "invalid argument (expect "
                      "() or ([x, y, width, height], ...): %s",
                      rb_cairo__inspect (rb_ary_new4 (argc, argv)));
          rectangles[i].x = NUM2INT (RARRAY_PTR (rb_rectangle)[0]);
          rectangles[i].y = NUM2INT (RARRAY_PTR (rb_rectangle)[1]);
          rectangles[i].width = NUM2INT (RARRAY_PTR (rb_rectangle)[2]);
          rectangles[i].height = NUM2INT (RARRAY_PTR (rb_rectangle)[3]);
        }
      region = cairo_region_create_rectangles (rectangles, argc);
    }
  cr_region_check_status (region);
  DATA_PTR (self) = region;
  return Qnil;
}

Instance Method Details

#== ⇒ Object 



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# File 'ext/cairo/rb_cairo_region.c', line 118

static VALUE
cr_region_equal (VALUE self, VALUE other)
{
  cairo_region_t *region, *other_region;

  if (!rb_cairo__is_kind_of (other, rb_cCairo_Region))
    return Qfalse;

  region = _SELF;
  other_region = RVAL2CRREGION (other);
  return CBOOL2RVAL (cairo_region_equal (region, other_region));
}

#[] ⇒ Object 



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# File 'ext/cairo/rb_cairo_region.c', line 157

static VALUE
cr_region_get_rectangle (VALUE self, VALUE index)
{
  cairo_region_t *region;
  cairo_rectangle_int_t extents;

  region = _SELF;
  cairo_region_get_rectangle (region, NUM2INT (index), &extents);
  cr_region_check_status (region);
  return rb_ary_new3 (4,
                      INT2NUM (extents.x), INT2NUM (extents.y),
                      INT2NUM (extents.width), INT2NUM (extents.height));
}

#contains_point? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'ext/cairo/rb_cairo_region.c', line 222

static VALUE
cr_region_containts_point (int argc, VALUE *argv, VALUE self)
{
  cairo_region_t *region;
  int x, y;
  VALUE arg1, arg2;
  const char *error_message =
    "invalid argument (expect "
    "(x, y) or ([x, y])): %s";

  rb_scan_args (argc, argv, "11", &arg1, &arg2);

  region = _SELF;
  if (argc == 1)
    {
      VALUE point;

      point = rb_check_array_type (arg1);
      if (RARRAY_LEN (point) != 4)
        rb_raise (rb_eArgError, error_message,
                  rb_cairo__inspect (rb_ary_new4 (argc, argv)));
      x = NUM2INT (RARRAY_PTR (point)[0]);
      y = NUM2INT (RARRAY_PTR (point)[1]);
    }
  else
    {
      x = NUM2INT (arg1);
      y = NUM2INT (arg2);
    }
  return CBOOL2RVAL (cairo_region_contains_point (region, x, y));
}

#contains_rectangle ⇒ Object 



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# File 'ext/cairo/rb_cairo_region.c', line 177

static VALUE
cr_region_containts_rectangle (int argc, VALUE *argv, VALUE self)
{
  cairo_region_t *region;
  cairo_rectangle_int_t rectangle;
  cairo_region_overlap_t overlap;
  VALUE arg1, arg2, arg3, arg4;
  const char *error_message =
    "invalid argument (expect "
    "(x, y, width, height) or ([x, y, width, height])): %s";

  rb_scan_args (argc, argv, "13", &arg1, &arg2, &arg3, &arg4);

  region = _SELF;
  if (argc == 1)
    {
      VALUE rb_rectangle;

      rb_rectangle = rb_check_array_type (arg1);
      if (RARRAY_LEN (rb_rectangle) != 4)
        rb_raise (rb_eArgError, error_message,
                  rb_cairo__inspect (rb_ary_new4 (argc, argv)));
      rectangle.x = NUM2INT (RARRAY_PTR (rb_rectangle)[0]);
      rectangle.y = NUM2INT (RARRAY_PTR (rb_rectangle)[1]);
      rectangle.width = NUM2INT (RARRAY_PTR (rb_rectangle)[2]);
      rectangle.height = NUM2INT (RARRAY_PTR (rb_rectangle)[3]);
    }
  else if (argc == 4)
    {
      rectangle.x = NUM2INT (arg1);
      rectangle.y = NUM2INT (arg2);
      rectangle.width = NUM2INT (arg3);
      rectangle.height = NUM2INT (arg4);
    }
  else
    {
      rb_raise (rb_eArgError, error_message,
                rb_cairo__inspect (rb_ary_new4 (argc, argv)));
    }

  overlap = cairo_region_contains_rectangle (region, &rectangle);
  cr_region_check_status (region);
  return INT2NUM (overlap);
}

#dup ⇒ Object 



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# File 'ext/cairo/rb_cairo_region.c', line 105

static VALUE
cr_region_dup (VALUE self)
{
  cairo_region_t *copied_region;
  VALUE rb_copied_region;

  copied_region = cairo_region_copy (_SELF);
  cr_region_check_status (copied_region);
  rb_copied_region = CRREGION2RVAL (copied_region);
  cairo_region_destroy (copied_region);
  return rb_copied_region;
}

#each_rectangle ⇒ Object 



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# File 'lib/cairo/region.rb', line 3

def each_rectangle
  return to_enum(:each_rectangle) unless block_given?
  num_rectangles.times.each do |i|
    yield(self[i])
  end
end

#empty? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'ext/cairo/rb_cairo_region.c', line 171

static VALUE
cr_region_is_empty (VALUE self)
{
  return CBOOL2RVAL (cairo_region_is_empty (_SELF));
}

#extents ⇒ Object 



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# File 'ext/cairo/rb_cairo_region.c', line 131

static VALUE
cr_region_get_extents (VALUE self)
{
  cairo_region_t *region;
  cairo_rectangle_int_t extents;

  region = _SELF;
  cairo_region_get_extents (region, &extents);
  cr_region_check_status (region);
  return rb_ary_new3 (4,
                      INT2NUM (extents.x), INT2NUM (extents.y),
                      INT2NUM (extents.width), INT2NUM (extents.height));
}

#intersect! ⇒ Object

#num_rectangles ⇒ Object 



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# File 'ext/cairo/rb_cairo_region.c', line 145

static VALUE
cr_region_num_rectangles (VALUE self)
{
  cairo_region_t *region;
  int num_rectangles;

  region = _SELF;
  num_rectangles = cairo_region_num_rectangles (region);
  cr_region_check_status (region);
  return INT2NUM (num_rectangles);
}

#rectangles ⇒ Object 



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# File 'lib/cairo/region.rb', line 10

def rectangles
  each_rectangle.to_a
end

#subtract! ⇒ Object

#translate! ⇒ Object 



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# File 'ext/cairo/rb_cairo_region.c', line 254

static VALUE
cr_region_translate (int argc, VALUE *argv, VALUE self)
{
  cairo_region_t *region;
  int x, y;
  VALUE arg1, arg2;
  const char *error_message =
    "invalid argument (expect "
    "(x, y) or ([x, y])): %s";

  rb_scan_args (argc, argv, "11", &arg1, &arg2);

  region = _SELF;
  if (argc == 1)
    {
      VALUE point;

      point = rb_check_array_type (arg1);
      if (RARRAY_LEN (point) != 4)
        rb_raise (rb_eArgError, error_message,
                  rb_cairo__inspect (rb_ary_new4 (argc, argv)));
      x = NUM2INT (RARRAY_PTR (point)[0]);
      y = NUM2INT (RARRAY_PTR (point)[1]);
    }
  else
    {
      x = NUM2INT (arg1);
      y = NUM2INT (arg2);
    }

  cairo_region_translate (region, x, y);
  cr_region_check_status (region);
  return Qnil;
}

#union! ⇒ Object

#xor! ⇒ Object