Cairo.h converted to FFI

cairo.h.rb

  CAIRO_VERSION_STRING = CAIRO_VERSION_MAJOR.CAIRO_VERSION_MINOR.CAIRO_VERSION_MICRO
  attach_function :cairo_version, [  ], :int
  attach_function :cairo_version_string, [  ], :string
  class CairoMatrix < FFI::Struct
    layout(
           :xx, :double,
           :yx, :double,
           :xy, :double,
           :yy, :double,
           :x0, :double,
           :y0, :double
    )
  end
  callback(:cairo_destroy_func_t, [ :pointer ], :void)
  class CairoUserDataKey < FFI::Struct
    layout(
           :unused, :int
    )
  end
  CAIRO_STATUS_SUCCESS = 0
  CAIRO_STATUS_NO_MEMORY = 1
  CAIRO_STATUS_READ_ERROR = 10
  CAIRO_STATUS_WRITE_ERROR = 11
  CAIRO_STATUS_SURFACE_FINISHED = 12
  CAIRO_STATUS_SURFACE_TYPE_MISMATCH = 13
  CAIRO_STATUS_PATTERN_TYPE_MISMATCH = 14
  CAIRO_STATUS_INVALID_CONTENT = 15
  CAIRO_STATUS_INVALID_FORMAT = 16
  CAIRO_STATUS_INVALID_VISUAL = 17
  CAIRO_STATUS_FILE_NOT_FOUND = 18
  CAIRO_STATUS_INVALID_DASH = 19
  CAIRO_STATUS_INVALID_RESTORE = 2
  CAIRO_STATUS_INVALID_DSC_COMMENT = 20
  CAIRO_STATUS_INVALID_INDEX = 21
  CAIRO_STATUS_CLIP_NOT_REPRESENTABLE = 22
  CAIRO_STATUS_TEMP_FILE_ERROR = 23
  CAIRO_STATUS_INVALID_STRIDE = 24
  CAIRO_STATUS_FONT_TYPE_MISMATCH = 25
  CAIRO_STATUS_USER_FONT_IMMUTABLE = 26
  CAIRO_STATUS_USER_FONT_ERROR = 27
  CAIRO_STATUS_NEGATIVE_COUNT = 28
  CAIRO_STATUS_INVALID_CLUSTERS = 29
  CAIRO_STATUS_INVALID_POP_GROUP = 3
  CAIRO_STATUS_INVALID_SLANT = 30
  CAIRO_STATUS_INVALID_WEIGHT = 31
  CAIRO_STATUS_INVALID_SIZE = 32
  CAIRO_STATUS_USER_FONT_NOT_IMPLEMENTED = 33
  CAIRO_STATUS_DEVICE_TYPE_MISMATCH = 34
  CAIRO_STATUS_DEVICE_ERROR = 35
  CAIRO_STATUS_LAST_STATUS = 36
  CAIRO_STATUS_NO_CURRENT_POINT = 4
  CAIRO_STATUS_INVALID_MATRIX = 5
  CAIRO_STATUS_INVALID_STATUS = 6
  CAIRO_STATUS_NULL_POINTER = 7
  CAIRO_STATUS_INVALID_STRING = 8
  CAIRO_STATUS_INVALID_PATH_DATA = 9

  CAIRO_CONTENT_COLOR = 0x1000
  CAIRO_CONTENT_ALPHA = 0x2000
  CAIRO_CONTENT_COLOR_ALPHA = 0x3000

  callback(:cairo_write_func_t, [ :pointer, :pointer, :uint ], cairo)
  callback(:cairo_read_func_t, [ :pointer, :pointer, :uint ], cairo)
  attach_function :cairo_create, [ :pointer ], :pointer
  attach_function :cairo_reference, [ :pointer ], :pointer
  attach_function :cairo_destroy, [ :pointer ], :void
  attach_function :cairo_get_reference_count, [ :pointer ], :uint
  attach_function :cairo_get_user_data, [ :pointer, :pointer ], :pointer
  attach_function :cairo_set_user_data, [ :pointer, :pointer, :pointer, :cairo_destroy_func_t ], :int
  attach_function :cairo_save, [ :pointer ], :void
  attach_function :cairo_restore, [ :pointer ], :void
  attach_function :cairo_push_group, [ :pointer ], :void
  attach_function :cairo_push_group_with_content, [ :pointer, :int ], :void
  attach_function :cairo_pop_group, [ :pointer ], :pointer
  attach_function :cairo_pop_group_to_source, [ :pointer ], :void
  CAIRO_OPERATOR_CLEAR = 0
  CAIRO_OPERATOR_SOURCE = 1
  CAIRO_OPERATOR_DEST_ATOP = 10
  CAIRO_OPERATOR_XOR = 11
  CAIRO_OPERATOR_ADD = 12
  CAIRO_OPERATOR_SATURATE = 13
  CAIRO_OPERATOR_MULTIPLY = 14
  CAIRO_OPERATOR_SCREEN = 15
  CAIRO_OPERATOR_OVERLAY = 16
  CAIRO_OPERATOR_DARKEN = 17
  CAIRO_OPERATOR_LIGHTEN = 18
  CAIRO_OPERATOR_COLOR_DODGE = 19
  CAIRO_OPERATOR_OVER = 2
  CAIRO_OPERATOR_COLOR_BURN = 20
  CAIRO_OPERATOR_HARD_LIGHT = 21
  CAIRO_OPERATOR_SOFT_LIGHT = 22
  CAIRO_OPERATOR_DIFFERENCE = 23
  CAIRO_OPERATOR_EXCLUSION = 24
  CAIRO_OPERATOR_HSL_HUE = 25
  CAIRO_OPERATOR_HSL_SATURATION = 26
  CAIRO_OPERATOR_HSL_COLOR = 27
  CAIRO_OPERATOR_HSL_LUMINOSITY = 28
  CAIRO_OPERATOR_IN = 3
  CAIRO_OPERATOR_OUT = 4
  CAIRO_OPERATOR_ATOP = 5
  CAIRO_OPERATOR_DEST = 6
  CAIRO_OPERATOR_DEST_OVER = 7
  CAIRO_OPERATOR_DEST_IN = 8
  CAIRO_OPERATOR_DEST_OUT = 9

  attach_function :cairo_set_operator, [ :pointer, :int ], :void
  attach_function :cairo_set_source, [ :pointer, :pointer ], :void
  attach_function :cairo_set_source_rgb, [ :pointer, :double, :double, :double ], :void
  attach_function :cairo_set_source_rgba, [ :pointer, :double, :double, :double, :double ], :void
  attach_function :cairo_set_source_surface, [ :pointer, :pointer, :double, :double ], :void
  attach_function :cairo_set_tolerance, [ :pointer, :double ], :void
  CAIRO_ANTIALIAS_DEFAULT = 0
  CAIRO_ANTIALIAS_NONE = 1
  CAIRO_ANTIALIAS_GRAY = 2
  CAIRO_ANTIALIAS_SUBPIXEL = 3

  attach_function :cairo_set_antialias, [ :pointer, :int ], :void
  CAIRO_FILL_RULE_WINDING = 0
  CAIRO_FILL_RULE_EVEN_ODD = 1

  attach_function :cairo_set_fill_rule, [ :pointer, :int ], :void
  attach_function :cairo_set_line_width, [ :pointer, :double ], :void
  CAIRO_LINE_CAP_BUTT = 0
  CAIRO_LINE_CAP_ROUND = 1
  CAIRO_LINE_CAP_SQUARE = 2

  attach_function :cairo_set_line_cap, [ :pointer, :int ], :void
  CAIRO_LINE_JOIN_MITER = 0
  CAIRO_LINE_JOIN_ROUND = 1
  CAIRO_LINE_JOIN_BEVEL = 2

  attach_function :cairo_set_line_join, [ :pointer, :int ], :void
  attach_function :cairo_set_dash, [ :pointer, :pointer, :int, :double ], :void
  attach_function :cairo_set_miter_limit, [ :pointer, :double ], :void
  attach_function :cairo_translate, [ :pointer, :double, :double ], :void
  attach_function :cairo_scale, [ :pointer, :double, :double ], :void
  attach_function :cairo_rotate, [ :pointer, :double ], :void
  attach_function :cairo_transform, [ :pointer, :pointer ], :void
  attach_function :cairo_set_matrix, [ :pointer, :pointer ], :void
  attach_function :cairo_identity_matrix, [ :pointer ], :void
  attach_function :cairo_user_to_device, [ :pointer, :pointer, :pointer ], :void
  attach_function :cairo_user_to_device_distance, [ :pointer, :pointer, :pointer ], :void
  attach_function :cairo_device_to_user, [ :pointer, :pointer, :pointer ], :void
  attach_function :cairo_device_to_user_distance, [ :pointer, :pointer, :pointer ], :void
  attach_function :cairo_new_path, [ :pointer ], :void
  attach_function :cairo_move_to, [ :pointer, :double, :double ], :void
  attach_function :cairo_new_sub_path, [ :pointer ], :void
  attach_function :cairo_line_to, [ :pointer, :double, :double ], :void
  attach_function :cairo_curve_to, [ :pointer, :double, :double, :double, :double, :double, :double ], :void
  attach_function :cairo_arc, [ :pointer, :double, :double, :double, :double, :double ], :void
  attach_function :cairo_arc_negative, [ :pointer, :double, :double, :double, :double, :double ], :void
  attach_function :cairo_rel_move_to, [ :pointer, :double, :double ], :void
  attach_function :cairo_rel_line_to, [ :pointer, :double, :double ], :void
  attach_function :cairo_rel_curve_to, [ :pointer, :double, :double, :double, :double, :double, :double ], :void
  attach_function :cairo_rectangle, [ :pointer, :double, :double, :double, :double ], :void
  attach_function :cairo_close_path, [ :pointer ], :void
  attach_function :cairo_path_extents, [ :pointer, :pointer, :pointer, :pointer, :pointer ], :void
  attach_function :cairo_paint, [ :pointer ], :void
  attach_function :cairo_paint_with_alpha, [ :pointer, :double ], :void
  attach_function :cairo_mask, [ :pointer, :pointer ], :void
  attach_function :cairo_mask_surface, [ :pointer, :pointer, :double, :double ], :void
  attach_function :cairo_stroke, [ :pointer ], :void
  attach_function :cairo_stroke_preserve, [ :pointer ], :void
  attach_function :cairo_fill, [ :pointer ], :void
  attach_function :cairo_fill_preserve, [ :pointer ], :void
  attach_function :cairo_copy_page, [ :pointer ], :void
  attach_function :cairo_show_page, [ :pointer ], :void
  attach_function :cairo_in_stroke, [ :pointer, :double, :double ], :int
  attach_function :cairo_in_fill, [ :pointer, :double, :double ], :int
  attach_function :cairo_in_clip, [ :pointer, :double, :double ], :int
  attach_function :cairo_stroke_extents, [ :pointer, :pointer, :pointer, :pointer, :pointer ], :void
  attach_function :cairo_fill_extents, [ :pointer, :pointer, :pointer, :pointer, :pointer ], :void
  attach_function :cairo_reset_clip, [ :pointer ], :void
  attach_function :cairo_clip, [ :pointer ], :void
  attach_function :cairo_clip_preserve, [ :pointer ], :void
  attach_function :cairo_clip_extents, [ :pointer, :pointer, :pointer, :pointer, :pointer ], :void
  class CairoRectangle < FFI::Struct
    layout(
           :x, :double,
           :y, :double,
           :width, :double,
           :height, :double
    )
  end
  class CairoRectangleList < FFI::Struct
    layout(
           :status, :int,
           :rectangles, :pointer,
           :num_rectangles, :int
    )
  end
  attach_function :cairo_copy_clip_rectangle_list, [ :pointer ], :pointer
  attach_function :cairo_rectangle_list_destroy, [ :pointer ], :void
  class CairoGlyphT < FFI::Struct
    layout(
           :index, :ulong,
           :x, :double,
           :y, :double
    )
  end
  attach_function :cairo_glyph_allocate, [ :int ], :pointer
  attach_function :cairo_glyph_free, [ :pointer ], :void
  class CairoTextClusterT < FFI::Struct
    layout(
           :num_bytes, :int,
           :num_glyphs, :int
    )
  end
  attach_function :cairo_text_cluster_allocate, [ :int ], :pointer
  attach_function :cairo_text_cluster_free, [ :pointer ], :void
  CAIRO_TEXT_CLUSTER_FLAG_BACKWARD = 0x00000001

  class CairoTextExtentsT < FFI::Struct
    layout(
           :x_bearing, :double,
           :y_bearing, :double,
           :width, :double,
           :height, :double,
           :x_advance, :double,
           :y_advance, :double
    )
  end
  class CairoFontExtentsT < FFI::Struct
    layout(
           :ascent, :double,
           :descent, :double,
           :height, :double,
           :max_x_advance, :double,
           :max_y_advance, :double
    )
  end
  CAIRO_FONT_SLANT_NORMAL = 0
  CAIRO_FONT_SLANT_ITALIC = 1
  CAIRO_FONT_SLANT_OBLIQUE = 2

  CAIRO_FONT_WEIGHT_NORMAL = 0
  CAIRO_FONT_WEIGHT_BOLD = 1

  CAIRO_SUBPIXEL_ORDER_DEFAULT = 0
  CAIRO_SUBPIXEL_ORDER_RGB = 1
  CAIRO_SUBPIXEL_ORDER_BGR = 2
  CAIRO_SUBPIXEL_ORDER_VRGB = 3
  CAIRO_SUBPIXEL_ORDER_VBGR = 4

  CAIRO_HINT_STYLE_DEFAULT = 0
  CAIRO_HINT_STYLE_NONE = 1
  CAIRO_HINT_STYLE_SLIGHT = 2
  CAIRO_HINT_STYLE_MEDIUM = 3
  CAIRO_HINT_STYLE_FULL = 4

  CAIRO_HINT_METRICS_DEFAULT = 0
  CAIRO_HINT_METRICS_OFF = 1
  CAIRO_HINT_METRICS_ON = 2

  attach_function :cairo_font_options_create, [  ], :pointer
  attach_function :cairo_font_options_copy, [ :pointer ], :pointer
  attach_function :cairo_font_options_destroy, [ :pointer ], :void
  attach_function :cairo_font_options_status, [ :pointer ], :int
  attach_function :cairo_font_options_merge, [ :pointer, :pointer ], :void
  attach_function :cairo_font_options_equal, [ :pointer, :pointer ], :int
  attach_function :cairo_font_options_hash, [ :pointer ], :ulong
  attach_function :cairo_font_options_set_antialias, [ :pointer, :int ], :void
  attach_function :cairo_font_options_get_antialias, [ :pointer ], :int
  attach_function :cairo_font_options_set_subpixel_order, [ :pointer, :int ], :void
  attach_function :cairo_font_options_get_subpixel_order, [ :pointer ], :int
  attach_function :cairo_font_options_set_hint_style, [ :pointer, :int ], :void
  attach_function :cairo_font_options_get_hint_style, [ :pointer ], :int
  attach_function :cairo_font_options_set_hint_metrics, [ :pointer, :int ], :void
  attach_function :cairo_font_options_get_hint_metrics, [ :pointer ], :int
  attach_function :cairo_select_font_face, [ :pointer, :string, :int, :int ], :void
  attach_function :cairo_set_font_size, [ :pointer, :double ], :void
  attach_function :cairo_set_font_matrix, [ :pointer, :pointer ], :void
  attach_function :cairo_get_font_matrix, [ :pointer, :pointer ], :void
  attach_function :cairo_set_font_options, [ :pointer, :pointer ], :void
  attach_function :cairo_get_font_options, [ :pointer, :pointer ], :void
  attach_function :cairo_set_font_face, [ :pointer, :pointer ], :void
  attach_function :cairo_get_font_face, [ :pointer ], :pointer
  attach_function :cairo_set_scaled_font, [ :pointer, :pointer ], :void
  attach_function :cairo_get_scaled_font, [ :pointer ], :pointer
  attach_function :cairo_show_text, [ :pointer, :string ], :void
  attach_function :cairo_show_glyphs, [ :pointer, :pointer, :int ], :void
  attach_function :cairo_show_text_glyphs, [ :pointer, :string, :int, :pointer, :int, :pointer, :int, :int ], :void
  attach_function :cairo_text_path, [ :pointer, :string ], :void
  attach_function :cairo_glyph_path, [ :pointer, :pointer, :int ], :void
  attach_function :cairo_text_extents, [ :pointer, :string, :pointer ], :void
  attach_function :cairo_glyph_extents, [ :pointer, :pointer, :int, :pointer ], :void
  attach_function :cairo_font_extents, [ :pointer, :pointer ], :void
  attach_function :cairo_font_face_reference, [ :pointer ], :pointer
  attach_function :cairo_font_face_destroy, [ :pointer ], :void
  attach_function :cairo_font_face_get_reference_count, [ :pointer ], :uint
  attach_function :cairo_font_face_status, [ :pointer ], :int
  CAIRO_FONT_TYPE_TOY = 0
  CAIRO_FONT_TYPE_FT = 1
  CAIRO_FONT_TYPE_WIN32 = 2
  CAIRO_FONT_TYPE_QUARTZ = 3
  CAIRO_FONT_TYPE_USER = 4

  attach_function :cairo_font_face_get_type, [ :pointer ], :int
  attach_function :cairo_font_face_get_user_data, [ :pointer, :pointer ], :pointer
  attach_function :cairo_font_face_set_user_data, [ :pointer, :pointer, :pointer, :cairo_destroy_func_t ], :int
  attach_function :cairo_scaled_font_create, [ :pointer, :pointer, :pointer, :pointer ], :pointer
  attach_function :cairo_scaled_font_reference, [ :pointer ], :pointer
  attach_function :cairo_scaled_font_destroy, [ :pointer ], :void
  attach_function :cairo_scaled_font_get_reference_count, [ :pointer ], :uint
  attach_function :cairo_scaled_font_status, [ :pointer ], :int
  attach_function :cairo_scaled_font_get_type, [ :pointer ], :int
  attach_function :cairo_scaled_font_get_user_data, [ :pointer, :pointer ], :pointer
  attach_function :cairo_scaled_font_set_user_data, [ :pointer, :pointer, :pointer, :cairo_destroy_func_t ], :int
  attach_function :cairo_scaled_font_extents, [ :pointer, :pointer ], :void
  attach_function :cairo_scaled_font_text_extents, [ :pointer, :string, :pointer ], :void
  attach_function :cairo_scaled_font_glyph_extents, [ :pointer, :pointer, :int, :pointer ], :void
  attach_function :cairo_scaled_font_text_to_glyphs, [ :pointer, :double, :double, :string, :int, :pointer, :pointer, :pointer, :pointer, :pointer ], :int
  attach_function :cairo_scaled_font_get_font_face, [ :pointer ], :pointer
  attach_function :cairo_scaled_font_get_font_matrix, [ :pointer, :pointer ], :void
  attach_function :cairo_scaled_font_get_ctm, [ :pointer, :pointer ], :void
  attach_function :cairo_scaled_font_get_scale_matrix, [ :pointer, :pointer ], :void
  attach_function :cairo_scaled_font_get_font_options, [ :pointer, :pointer ], :void
  attach_function :cairo_toy_font_face_create, [ :string, :int, :int ], :pointer
  attach_function :cairo_toy_font_face_get_family, [ :pointer ], :string
  attach_function :cairo_toy_font_face_get_slant, [ :pointer ], :int
  attach_function :cairo_toy_font_face_get_weight, [ :pointer ], :int
  attach_function :cairo_user_font_face_create, [  ], :pointer
  callback(:cairo_user_scaled_font_init_func_t, [ :pointer, :pointer, :pointer ], cairo)
  callback(:cairo_user_scaled_font_render_glyph_func_t, [ :pointer, :ulong, :pointer, :pointer ], cairo)
  callback(:cairo_user_scaled_font_text_to_glyphs_func_t, [ :pointer, :string, :int, :pointer, :pointer, :pointer, :pointer, :pointer ], cairo)
  callback(:cairo_user_scaled_font_unicode_to_glyph_func_t, [ :pointer, :ulong, :pointer ], cairo)
  attach_function :cairo_user_font_face_set_init_func, [ :pointer, :cairo_user_scaled_font_init_func_t ], :void
  attach_function :cairo_user_font_face_set_render_glyph_func, [ :pointer, :cairo_user_scaled_font_render_glyph_func_t ], :void
  attach_function :cairo_user_font_face_set_text_to_glyphs_func, [ :pointer, :cairo_user_scaled_font_text_to_glyphs_func_t ], :void
  attach_function :cairo_user_font_face_set_unicode_to_glyph_func, [ :pointer, :cairo_user_scaled_font_unicode_to_glyph_func_t ], :void
  attach_function :cairo_user_font_face_get_init_func, [ :pointer ], :cairo_user_scaled_font_init_func_t
  attach_function :cairo_user_font_face_get_render_glyph_func, [ :pointer ], :cairo_user_scaled_font_render_glyph_func_t
  attach_function :cairo_user_font_face_get_text_to_glyphs_func, [ :pointer ], :cairo_user_scaled_font_text_to_glyphs_func_t
  attach_function :cairo_user_font_face_get_unicode_to_glyph_func, [ :pointer ], :cairo_user_scaled_font_unicode_to_glyph_func_t
  attach_function :cairo_get_operator, [ :pointer ], :int
  attach_function :cairo_get_source, [ :pointer ], :pointer
  attach_function :cairo_get_tolerance, [ :pointer ], :double
  attach_function :cairo_get_antialias, [ :pointer ], :int
  attach_function :cairo_has_current_point, [ :pointer ], :int
  attach_function :cairo_get_current_point, [ :pointer, :pointer, :pointer ], :void
  attach_function :cairo_get_fill_rule, [ :pointer ], :int
  attach_function :cairo_get_line_width, [ :pointer ], :double
  attach_function :cairo_get_line_cap, [ :pointer ], :int
  attach_function :cairo_get_line_join, [ :pointer ], :int
  attach_function :cairo_get_miter_limit, [ :pointer ], :double
  attach_function :cairo_get_dash_count, [ :pointer ], :int
  attach_function :cairo_get_dash, [ :pointer, :pointer, :pointer ], :void
  attach_function :cairo_get_matrix, [ :pointer, :pointer ], :void
  attach_function :cairo_get_target, [ :pointer ], :pointer
  attach_function :cairo_get_group_target, [ :pointer ], :pointer
  CAIRO_PATH_MOVE_TO = 0
  CAIRO_PATH_LINE_TO = 1
  CAIRO_PATH_CURVE_TO = 2
  CAIRO_PATH_CLOSE_PATH = 3

  class CairoPathDataTHeader < FFI::Struct
    layout(
           :type, :int,
           :length, :int
    )
  end
  class CairoPathDataTPoint < FFI::Struct
    layout(
           :x, :double,
           :y, :double
    )
  end
# FIXME: Nested structures are not correctly supported at the moment.
# Please check the order of the declarations in the structure below.
#   class CairoPathDataT < FFI::Union
#     layout(
#            :point, CairoPathDataTPoint,
#            :header, CairoPathDataTHeader
#     )
#   end
  class CairoPath < FFI::Struct
    layout(
           :status, :int,
           :data, :pointer,
           :num_data, :int
    )
  end
  attach_function :cairo_copy_path, [ :pointer ], :pointer
  attach_function :cairo_copy_path_flat, [ :pointer ], :pointer
  attach_function :cairo_append_path, [ :pointer, :pointer ], :void
  attach_function :cairo_path_destroy, [ :pointer ], :void
  attach_function :cairo_status, [ :pointer ], :int
  attach_function :cairo_status_to_string, [ :int ], :string
  attach_function :cairo_device_reference, [ :pointer ], :pointer
  CAIRO_DEVICE_TYPE_DRM = 0
  CAIRO_DEVICE_TYPE_GL = 1
  CAIRO_DEVICE_TYPE_SCRIPT = 2
  CAIRO_DEVICE_TYPE_XCB = 3
  CAIRO_DEVICE_TYPE_XLIB = 4
  CAIRO_DEVICE_TYPE_XML = 5

  attach_function :cairo_device_get_type, [ :pointer ], :int
  attach_function :cairo_device_status, [ :pointer ], :int
  attach_function :cairo_device_acquire, [ :pointer ], :int
  attach_function :cairo_device_release, [ :pointer ], :void
  attach_function :cairo_device_flush, [ :pointer ], :void
  attach_function :cairo_device_finish, [ :pointer ], :void
  attach_function :cairo_device_destroy, [ :pointer ], :void
  attach_function :cairo_device_get_reference_count, [ :pointer ], :uint
  attach_function :cairo_device_get_user_data, [ :pointer, :pointer ], :pointer
  attach_function :cairo_device_set_user_data, [ :pointer, :pointer, :pointer, :cairo_destroy_func_t ], :int
  attach_function :cairo_surface_create_similar, [ :pointer, :int, :int, :int ], :pointer
  attach_function :cairo_surface_create_for_rectangle, [ :pointer, :double, :double, :double, :double ], :pointer
  attach_function :cairo_surface_reference, [ :pointer ], :pointer
  attach_function :cairo_surface_finish, [ :pointer ], :void
  attach_function :cairo_surface_destroy, [ :pointer ], :void
  attach_function :cairo_surface_get_device, [ :pointer ], :pointer
  attach_function :cairo_surface_get_reference_count, [ :pointer ], :uint
  attach_function :cairo_surface_status, [ :pointer ], :int
  CAIRO_SURFACE_TYPE_IMAGE = 0
  CAIRO_SURFACE_TYPE_PDF = 1
  CAIRO_SURFACE_TYPE_SVG = 10
  CAIRO_SURFACE_TYPE_OS2 = 11
  CAIRO_SURFACE_TYPE_WIN32_PRINTING = 12
  CAIRO_SURFACE_TYPE_QUARTZ_IMAGE = 13
  CAIRO_SURFACE_TYPE_SCRIPT = 14
  CAIRO_SURFACE_TYPE_QT = 15
  CAIRO_SURFACE_TYPE_RECORDING = 16
  CAIRO_SURFACE_TYPE_VG = 17
  CAIRO_SURFACE_TYPE_GL = 18
  CAIRO_SURFACE_TYPE_DRM = 19
  CAIRO_SURFACE_TYPE_PS = 2
  CAIRO_SURFACE_TYPE_TEE = 20
  CAIRO_SURFACE_TYPE_XML = 21
  CAIRO_SURFACE_TYPE_SKIA = 22
  CAIRO_SURFACE_TYPE_SUBSURFACE = 23
  CAIRO_SURFACE_TYPE_XLIB = 3
  CAIRO_SURFACE_TYPE_XCB = 4
  CAIRO_SURFACE_TYPE_GLITZ = 5
  CAIRO_SURFACE_TYPE_QUARTZ = 6
  CAIRO_SURFACE_TYPE_WIN32 = 7
  CAIRO_SURFACE_TYPE_BEOS = 8
  CAIRO_SURFACE_TYPE_DIRECTFB = 9

  attach_function :cairo_surface_get_type, [ :pointer ], :int
  attach_function :cairo_surface_get_content, [ :pointer ], :int
  attach_function :cairo_surface_get_user_data, [ :pointer, :pointer ], :pointer
  attach_function :cairo_surface_set_user_data, [ :pointer, :pointer, :pointer, :cairo_destroy_func_t ], :int
  CAIRO_MIME_TYPE_JPEG = image/jpeg
  CAIRO_MIME_TYPE_PNG = image/png
  CAIRO_MIME_TYPE_JP2 = image/jp2
  CAIRO_MIME_TYPE_URI = text/x-uri
  attach_function :cairo_surface_get_mime_data, [ :pointer, :string, :pointer, :pointer ], :void
  attach_function :cairo_surface_set_mime_data, [ :pointer, :string, :pointer, :ulong, :cairo_destroy_func_t, :pointer ], :int
  attach_function :cairo_surface_get_font_options, [ :pointer, :pointer ], :void
  attach_function :cairo_surface_flush, [ :pointer ], :void
  attach_function :cairo_surface_mark_dirty, [ :pointer ], :void
  attach_function :cairo_surface_mark_dirty_rectangle, [ :pointer, :int, :int, :int, :int ], :void
  attach_function :cairo_surface_set_device_offset, [ :pointer, :double, :double ], :void
  attach_function :cairo_surface_get_device_offset, [ :pointer, :pointer, :pointer ], :void
  attach_function :cairo_surface_set_fallback_resolution, [ :pointer, :double, :double ], :void
  attach_function :cairo_surface_get_fallback_resolution, [ :pointer, :pointer, :pointer ], :void
  attach_function :cairo_surface_copy_page, [ :pointer ], :void
  attach_function :cairo_surface_show_page, [ :pointer ], :void
  attach_function :cairo_surface_has_show_text_glyphs, [ :pointer ], :int
  CAIRO_FORMAT_INVALID = -1
  CAIRO_FORMAT_ARGB32 = 0
  CAIRO_FORMAT_RGB24 = 1
  CAIRO_FORMAT_A8 = 2
  CAIRO_FORMAT_A1 = 3
  CAIRO_FORMAT_RGB16_565 = 4

  attach_function :cairo_image_surface_create, [ :int, :int, :int ], :pointer
  attach_function :cairo_format_stride_for_width, [ :int, :int ], :int
  attach_function :cairo_image_surface_create_for_data, [ :pointer, :int, :int, :int, :int ], :pointer
  attach_function :cairo_image_surface_get_data, [ :pointer ], :pointer
  attach_function :cairo_image_surface_get_format, [ :pointer ], :int
  attach_function :cairo_image_surface_get_width, [ :pointer ], :int
  attach_function :cairo_image_surface_get_height, [ :pointer ], :int
  attach_function :cairo_image_surface_get_stride, [ :pointer ], :int
  attach_function :cairo_recording_surface_create, [ :int, :pointer ], :pointer
  attach_function :cairo_recording_surface_ink_extents, [ :pointer, :pointer, :pointer, :pointer, :pointer ], :void
  attach_function :cairo_pattern_create_rgb, [ :double, :double, :double ], :pointer
  attach_function :cairo_pattern_create_rgba, [ :double, :double, :double, :double ], :pointer
  attach_function :cairo_pattern_create_for_surface, [ :pointer ], :pointer
  attach_function :cairo_pattern_create_linear, [ :double, :double, :double, :double ], :pointer
  attach_function :cairo_pattern_create_radial, [ :double, :double, :double, :double, :double, :double ], :pointer
  attach_function :cairo_pattern_reference, [ :pointer ], :pointer
  attach_function :cairo_pattern_destroy, [ :pointer ], :void
  attach_function :cairo_pattern_get_reference_count, [ :pointer ], :uint
  attach_function :cairo_pattern_status, [ :pointer ], :int
  attach_function :cairo_pattern_get_user_data, [ :pointer, :pointer ], :pointer
  attach_function :cairo_pattern_set_user_data, [ :pointer, :pointer, :pointer, :cairo_destroy_func_t ], :int
  CAIRO_PATTERN_TYPE_SOLID = 0
  CAIRO_PATTERN_TYPE_SURFACE = 1
  CAIRO_PATTERN_TYPE_LINEAR = 2
  CAIRO_PATTERN_TYPE_RADIAL = 3

  attach_function :cairo_pattern_get_type, [ :pointer ], :int
  attach_function :cairo_pattern_add_color_stop_rgb, [ :pointer, :double, :double, :double, :double ], :void
  attach_function :cairo_pattern_add_color_stop_rgba, [ :pointer, :double, :double, :double, :double, :double ], :void
  attach_function :cairo_pattern_set_matrix, [ :pointer, :pointer ], :void
  attach_function :cairo_pattern_get_matrix, [ :pointer, :pointer ], :void
  CAIRO_EXTEND_NONE = 0
  CAIRO_EXTEND_REPEAT = 1
  CAIRO_EXTEND_REFLECT = 2
  CAIRO_EXTEND_PAD = 3

  attach_function :cairo_pattern_set_extend, [ :pointer, :int ], :void
  attach_function :cairo_pattern_get_extend, [ :pointer ], :int
  CAIRO_FILTER_FAST = 0
  CAIRO_FILTER_GOOD = 1
  CAIRO_FILTER_BEST = 2
  CAIRO_FILTER_NEAREST = 3
  CAIRO_FILTER_BILINEAR = 4
  CAIRO_FILTER_GAUSSIAN = 5

  attach_function :cairo_pattern_set_filter, [ :pointer, :int ], :void
  attach_function :cairo_pattern_get_filter, [ :pointer ], :int
  attach_function :cairo_pattern_get_rgba, [ :pointer, :pointer, :pointer, :pointer, :pointer ], :int
  attach_function :cairo_pattern_get_surface, [ :pointer, :pointer ], :int
  attach_function :cairo_pattern_get_color_stop_rgba, [ :pointer, :int, :pointer, :pointer, :pointer, :pointer, :pointer ], :int
  attach_function :cairo_pattern_get_color_stop_count, [ :pointer, :pointer ], :int
  attach_function :cairo_pattern_get_linear_points, [ :pointer, :pointer, :pointer, :pointer, :pointer ], :int
  attach_function :cairo_pattern_get_radial_circles, [ :pointer, :pointer, :pointer, :pointer, :pointer, :pointer, :pointer ], :int
  attach_function :cairo_matrix_init, [ :pointer, :double, :double, :double, :double, :double, :double ], :void
  attach_function :cairo_matrix_init_identity, [ :pointer ], :void
  attach_function :cairo_matrix_init_translate, [ :pointer, :double, :double ], :void
  attach_function :cairo_matrix_init_scale, [ :pointer, :double, :double ], :void
  attach_function :cairo_matrix_init_rotate, [ :pointer, :double ], :void
  attach_function :cairo_matrix_translate, [ :pointer, :double, :double ], :void
  attach_function :cairo_matrix_scale, [ :pointer, :double, :double ], :void
  attach_function :cairo_matrix_rotate, [ :pointer, :double ], :void
  attach_function :cairo_matrix_invert, [ :pointer ], :int
  attach_function :cairo_matrix_multiply, [ :pointer, :pointer, :pointer ], :void
  attach_function :cairo_matrix_transform_distance, [ :pointer, :pointer, :pointer ], :void
  attach_function :cairo_matrix_transform_point, [ :pointer, :pointer, :pointer ], :void
  class CairoRectangleInt < FFI::Struct
    layout(
           :x, :int,
           :y, :int,
           :width, :int,
           :height, :int
    )
  end
  CAIRO_REGION_OVERLAP_IN = 0
  CAIRO_REGION_OVERLAP_OUT = 1
  CAIRO_REGION_OVERLAP_PART = 2

  attach_function :cairo_region_create, [  ], :pointer
  attach_function :cairo_region_create_rectangle, [ :pointer ], :pointer
  attach_function :cairo_region_create_rectangles, [ :pointer, :int ], :pointer
  attach_function :cairo_region_copy, [ :pointer ], :pointer
  attach_function :cairo_region_reference, [ :pointer ], :pointer
  attach_function :cairo_region_destroy, [ :pointer ], :void
  attach_function :cairo_region_equal, [ :pointer, :pointer ], :int
  attach_function :cairo_region_status, [ :pointer ], :int
  attach_function :cairo_region_get_extents, [ :pointer, :pointer ], :void
  attach_function :cairo_region_num_rectangles, [ :pointer ], :int
  attach_function :cairo_region_get_rectangle, [ :pointer, :int, :pointer ], :void
  attach_function :cairo_region_is_empty, [ :pointer ], :int
  attach_function :cairo_region_contains_rectangle, [ :pointer, :pointer ], :int
  attach_function :cairo_region_contains_point, [ :pointer, :int, :int ], :int
  attach_function :cairo_region_translate, [ :pointer, :int, :int ], :void
  attach_function :cairo_region_subtract, [ :pointer, :pointer ], :int
  attach_function :cairo_region_subtract_rectangle, [ :pointer, :pointer ], :int
  attach_function :cairo_region_intersect, [ :pointer, :pointer ], :int
  attach_function :cairo_region_intersect_rectangle, [ :pointer, :pointer ], :int
  attach_function :cairo_region_union, [ :pointer, :pointer ], :int
  attach_function :cairo_region_union_rectangle, [ :pointer, :pointer ], :int
  attach_function :cairo_region_xor, [ :pointer, :pointer ], :int
  attach_function :cairo_region_xor_rectangle, [ :pointer, :pointer ], :int
  attach_function :cairo_debug_reset_static_data, [  ], :void