class Cairo::RecordingSurface - cairo-1.12.9 Documentation

# class Cairo::RecordingSurface

recording surface

### Public Class Methods

new(*args) click to toggle source

recording surface functions

    static VALUE
    cr_recording_surface_initialize (int argc, VALUE *argv, VALUE self)
    {
      VALUE arg1, arg2, arg3, arg4, arg5;
      cairo_surface_t *surface;
      cairo_content_t content = CAIRO_CONTENT_COLOR_ALPHA;
      cairo_rectangle_t extents;
      const char *error_message =
        "invalid argument (expect "
        "(x, y, width, height), "
        "([x, y, width, height]),"
        "(x, y, width, height, content) or "
        "([x, y, width, height], content)): %s";

      rb_scan_args (argc, argv, "14", &arg1, &arg2, &arg3, &arg4, &arg5);
      if (argc == 1 || argc == 2)
        {
          VALUE rb_extents;

          rb_extents = rb_check_array_type (arg1);
          if (RARRAY_LEN (rb_extents) != 4)
            rb_raise (rb_eArgError, error_message, rb_cairo__inspect (arg1));
          extents.x = NUM2DBL (RARRAY_PTR (rb_extents)[0]);
          extents.y = NUM2DBL (RARRAY_PTR (rb_extents)[1]);
          extents.width = NUM2DBL (RARRAY_PTR (rb_extents)[2]);
          extents.height = NUM2DBL (RARRAY_PTR (rb_extents)[3]);
          if (!NIL_P (arg2))
            content = RVAL2CRCONTENT (arg2);
        }
      else if (argc == 4 || argc == 5)
        {
          extents.x = NUM2DBL (arg1);
          extents.y = NUM2DBL (arg2);
          extents.width = NUM2DBL (arg3);
          extents.height = NUM2DBL (arg4);
          if (!NIL_P (arg5))
            content = RVAL2CRCONTENT (arg5);
        }
      else
        {
          rb_raise (rb_eArgError, error_message,
                    rb_cairo__inspect (rb_ary_new4 (argc, argv)));
        }

      surface = cairo_recording_surface_create (content, &extents);
      cr_surface_check_status (surface);
      DATA_PTR (self) = surface;
      if (rb_block_given_p ())
        yield_and_finish (self);
      return Qnil;
    }

### Public Instance Methods

extents() click to toggle source

    static VALUE
    cr_recording_surface_get_extents (VALUE self)
    {
      cairo_surface_t *surface;
      cairo_rectangle_t extents;

      surface = _SELF;
      cairo_recording_surface_get_extents (surface, &extents);
      cr_surface_check_status (surface);
      return rb_ary_new3 (4,
                          rb_float_new (extents.x),
                          rb_float_new (extents.y),
                          rb_float_new (extents.width),
                          rb_float_new (extents.height));
    }

ink_extents() click to toggle source

    static VALUE
    cr_recording_surface_get_ink_extents (VALUE self)
    {
      cairo_surface_t *surface;
      double x, y, width, height;

      surface = _SELF;
      cairo_recording_surface_ink_extents (surface, &x, &y, &width, &height);
      cr_surface_check_status (surface);
      return rb_ary_new3 (4,
                          rb_float_new (x), rb_float_new (y),
                          rb_float_new (width), rb_float_new (height));
    }