cairoint.h

按照官方的说法：Cairo is a vector graphics library with cross-device output support. 翻译过来

cairo_private cairo_status_t
_cairo_gstate_show_glyphs (cairo_gstate_t *gstate,
			   cairo_glyph_t *glyphs,
			   int num_glyphs);

cairo_private cairo_status_t
_cairo_gstate_glyph_path (cairo_gstate_t     *gstate,
			  cairo_glyph_t	     *glyphs,
			  int		      num_glyphs,
			  cairo_path_fixed_t *path);

cairo_private cairo_bool_t
_cairo_operator_bounded_by_mask (cairo_operator_t op);

cairo_private cairo_bool_t
_cairo_operator_bounded_by_source (cairo_operator_t op);

/* cairo_color.c */
cairo_private const cairo_color_t *
_cairo_stock_color (cairo_stock_t stock);

#define CAIRO_COLOR_WHITE       _cairo_stock_color (CAIRO_STOCK_WHITE)
#define CAIRO_COLOR_BLACK       _cairo_stock_color (CAIRO_STOCK_BLACK)
#define CAIRO_COLOR_TRANSPARENT _cairo_stock_color (CAIRO_STOCK_TRANSPARENT)

cairo_private void
_cairo_color_init (cairo_color_t *color);

cairo_private void
_cairo_color_init_rgb (cairo_color_t *color,
		       double red, double green, double blue);

cairo_private void
_cairo_color_init_rgba (cairo_color_t *color,
			double red, double green, double blue,
			double alpha);

cairo_private void
_cairo_color_multiply_alpha (cairo_color_t *color,
			     double	    alpha);

cairo_private void
_cairo_color_get_rgba (cairo_color_t *color,
		       double	     *red,
		       double	     *green,
		       double	     *blue,
		       double	     *alpha);

cairo_private void
_cairo_color_get_rgba_premultiplied (cairo_color_t *color,
				     double	   *red,
				     double	   *green,
				     double	   *blue,
				     double	   *alpha);

/* cairo-font.c */

cairo_private void
_cairo_scaled_font_freeze_cache (cairo_scaled_font_t *scaled_font);

cairo_private void
_cairo_scaled_font_thaw_cache (cairo_scaled_font_t *scaled_font);

cairo_private void
_cairo_scaled_font_set_error (cairo_scaled_font_t *scaled_font,
			      cairo_status_t status);

extern const cairo_private cairo_font_face_t _cairo_font_face_nil;

cairo_private void
_cairo_font_face_init (cairo_font_face_t               *font_face,
		       const cairo_font_face_backend_t *backend);

cairo_private cairo_font_face_t *
_cairo_toy_font_face_create (const char           *family,
			     cairo_font_slant_t    slant,
			     cairo_font_weight_t   weight);

cairo_private void
_cairo_unscaled_font_init (cairo_unscaled_font_t               *font,
			   const cairo_unscaled_font_backend_t *backend);

cairo_private cairo_unscaled_font_t *
_cairo_unscaled_font_reference (cairo_unscaled_font_t *font);

cairo_private void
_cairo_unscaled_font_destroy (cairo_unscaled_font_t *font);

/* cairo-font-options.c */

cairo_private void
_cairo_font_options_init_default (cairo_font_options_t *options);

cairo_private void
_cairo_font_options_init_copy (cairo_font_options_t		*options,
			       const cairo_font_options_t	*other);

/* cairo_hull.c */
cairo_private cairo_status_t
_cairo_hull_compute (cairo_pen_vertex_t *vertices, int *num_vertices);

/* cairo-lzw.c */
cairo_private unsigned char *
_cairo_lzw_compress (unsigned char *data, unsigned long *size_in_out);

/* cairo_operator.c */
cairo_private cairo_bool_t
_cairo_operator_always_opaque (cairo_operator_t op);

cairo_private cairo_bool_t
_cairo_operator_always_translucent (cairo_operator_t op);

/* cairo_path.c */
cairo_private void
_cairo_path_fixed_init (cairo_path_fixed_t *path);

cairo_private cairo_status_t
_cairo_path_fixed_init_copy (cairo_path_fixed_t *path,
			     cairo_path_fixed_t *other);

cairo_private cairo_path_fixed_t *
_cairo_path_fixed_create (void);

cairo_private void
_cairo_path_fixed_fini (cairo_path_fixed_t *path);

cairo_private void
_cairo_path_fixed_destroy (cairo_path_fixed_t *path);

cairo_private cairo_status_t
_cairo_path_fixed_move_to (cairo_path_fixed_t  *path,
			   cairo_fixed_t	x,
			   cairo_fixed_t	y);

cairo_private void
_cairo_path_fixed_new_sub_path (cairo_path_fixed_t *path);

cairo_private cairo_status_t
_cairo_path_fixed_rel_move_to (cairo_path_fixed_t *path,
			       cairo_fixed_t	   dx,
			       cairo_fixed_t	   dy);

cairo_private cairo_status_t
_cairo_path_fixed_line_to (cairo_path_fixed_t *path,
			   cairo_fixed_t	x,
			   cairo_fixed_t	y);

cairo_private cairo_status_t
_cairo_path_fixed_rel_line_to (cairo_path_fixed_t *path,
			       cairo_fixed_t	   dx,
			       cairo_fixed_t	   dy);

cairo_private cairo_status_t
_cairo_path_fixed_curve_to (cairo_path_fixed_t	*path,
			    cairo_fixed_t x0, cairo_fixed_t y0,
			    cairo_fixed_t x1, cairo_fixed_t y1,
			    cairo_fixed_t x2, cairo_fixed_t y2);

cairo_private cairo_status_t
_cairo_path_fixed_rel_curve_to (cairo_path_fixed_t *path,
				cairo_fixed_t dx0, cairo_fixed_t dy0,
				cairo_fixed_t dx1, cairo_fixed_t dy1,
				cairo_fixed_t dx2, cairo_fixed_t dy2);

cairo_private cairo_status_t
_cairo_path_fixed_close_path (cairo_path_fixed_t *path);

cairo_private cairo_status_t
_cairo_path_fixed_get_current_point (cairo_path_fixed_t *path,
				     cairo_fixed_t	*x,
				     cairo_fixed_t	*y);

typedef cairo_status_t
(cairo_path_fixed_move_to_func_t) (void		 *closure,
				   cairo_point_t *point);

typedef cairo_status_t
(cairo_path_fixed_line_to_func_t) (void		 *closure,
				   cairo_point_t *point);

typedef cairo_status_t
(cairo_path_fixed_curve_to_func_t) (void	  *closure,
				    cairo_point_t *p0,
				    cairo_point_t *p1,
				    cairo_point_t *p2);

typedef cairo_status_t
(cairo_path_fixed_close_path_func_t) (void *closure);

cairo_private cairo_status_t
_cairo_path_fixed_interpret (cairo_path_fixed_t		  *path,
		       cairo_direction_t		   dir,
		       cairo_path_fixed_move_to_func_t	  *move_to,
		       cairo_path_fixed_line_to_func_t	  *line_to,
		       cairo_path_fixed_curve_to_func_t	  *curve_to,
		       cairo_path_fixed_close_path_func_t *close_path,
		       void				  *closure);

cairo_private cairo_status_t
_cairo_path_fixed_bounds (cairo_path_fixed_t *path,
			  double *x1, double *y1,
			  double *x2, double *y2);

cairo_private void
_cairo_path_fixed_device_transform (cairo_path_fixed_t	*path,
				    cairo_matrix_t	*device_transform);

/* cairo_path_fill.c */
cairo_private cairo_status_t
_cairo_path_fixed_fill_to_traps (cairo_path_fixed_t *path,
				 cairo_fill_rule_t   fill_rule,
				 double              tolerance,
				 cairo_traps_t      *traps);

/* cairo_path_stroke.c */
cairo_private cairo_status_t
_cairo_path_fixed_stroke_to_traps (cairo_path_fixed_t	*path,
				   cairo_stroke_style_t	*stroke_style,
				   cairo_matrix_t	*ctm,
				   cairo_matrix_t	*ctm_inverse,
				   double		 tolerance,
				   cairo_traps_t	*traps);

/* cairo-scaled-font.c */

cairo_private cairo_status_t
_cairo_scaled_font_init (cairo_scaled_font_t               *scaled_font,
			 cairo_font_face_t		   *font_face,
			 const cairo_matrix_t              *font_matrix,
			 const cairo_matrix_t              *ctm,
			 const cairo_font_options_t	   *options,
			 const cairo_scaled_font_backend_t *backend);

cairo_private void
_cairo_scaled_font_set_metrics (cairo_scaled_font_t	    *scaled_font,
				cairo_font_extents_t	    *fs_metrics);

cairo_private void
_cairo_scaled_font_fini (cairo_scaled_font_t *scaled_font);

cairo_private cairo_status_t
_cairo_scaled_font_font_extents (cairo_scaled_font_t  *scaled_font,
				 cairo_font_extents_t *extents);

cairo_private cairo_status_t
_cairo_scaled_font_text_to_glyphs (cairo_scaled_font_t	*scaled_font,
				   double		x,
				   double		y,
				   const char           *utf8,
				   cairo_glyph_t       **glyphs,
				   int 		        *num_glyphs);

cairo_private cairo_status_t
_cairo_scaled_font_glyph_extents (cairo_scaled_font_t	*scaled_font,
				  cairo_glyph_t 	*glyphs,
				  int 			num_glyphs,
				  cairo_text_extents_t *extents);

cairo_private cairo_status_t
_cairo_scaled_font_glyph_device_extents (cairo_scaled_font_t	 *scaled_font,
					 const cairo_glyph_t	 *glyphs,
					 int                      num_glyphs,
					 cairo_rectangle_int16_t *extents);

cairo_private cairo_status_t
_cairo_scaled_font_show_glyphs (cairo_scaled_font_t *scaled_font,
				cairo_operator_t     op,
				cairo_pattern_t	    *source,
				cairo_surface_t	    *surface,
				int		     source_x,
				int		     source_y,
				int		     dest_x,
				int		     dest_y,
				unsigned int	     width,
				unsigned int	     height,
				const cairo_glyph_t *glyphs,
				int		     num_glyphs);

cairo_private cairo_status_t
_cairo_scaled_font_glyph_path (cairo_scaled_font_t *scaled_font,
			       const cairo_glyph_t *glyphs,
			       int                  num_glyphs,
			       cairo_path_fixed_t  *path);

cairo_private void
_cairo_scaled_glyph_set_metrics (cairo_scaled_glyph_t *scaled_glyph,
				 cairo_scaled_font_t *scaled_font,
				 cairo_text_extents_t *fs_metrics);

cairo_private void
_cairo_scaled_glyph_set_surface (cairo_scaled_glyph_t *scaled_glyph,
				 cairo_scaled_font_t *scaled_font,
				 cairo_image_surface_t *surface);

cairo_private void
_cairo_scaled_glyph_set_path (cairo_scaled_glyph_t *scaled_glyph,
			      cairo_scaled_font_t *scaled_font,
			      cairo_path_fixed_t *path);

cairo_private cairo_int_status_t
_cairo_scaled_glyph_lookup (cairo_scaled_font_t *scaled_font,
			    unsigned long index,
			    cairo_scaled_glyph_info_t info,
			    cairo_scaled_glyph_t **scaled_glyph_ret);

cairo_private void
_cairo_scaled_font_map_destroy (void);

/* cairo-stroke-style.c */

cairo_private void
_cairo_stroke_style_init (cairo_stroke_style_t *style);

cairo_private cairo_status_t
_cairo_stroke_style_init_copy (cairo_stroke_style_t *style,
			       cairo_stroke_style_t *other);

cairo_private void
_cairo_stroke_style_fini (cairo_stroke_style_t *style);

/* cairo-surface.c */

extern const cairo_private cairo_surface_t _cairo_surface_nil;
extern const cairo_private cairo_surface_t _cairo_surface_nil_read_error;
extern const cairo_private cairo_surface_t _cairo_surface_nil_file_not_found;

cairo_private void
_cairo_surface_set_error (cairo_surface_t	*surface,
			  cairo_status_t	 status);

cairo_private cairo_surface_t *
_cairo_surface_create_similar_scratch (cairo_surface_t *other,
				       cairo_content_t	content,
				       int		width,
				       int		height);

cairo_private cairo_surface_t *
_cairo_surface_create_similar_solid (cairo_surface_t	 *other,
				     cairo_content_t	  content,
				     int		  width,
				     int		  height,
				     const cairo_color_t *color);

cairo_private void
_cairo_surface_init (cairo_surface_t			*surface,
		     const cairo_surface_backend_t	*backend,
		     cairo_content_t			 content);

cairo_private cairo_clip_mode_t
_cairo_surface_get_clip_mode (cairo_surface_t *surface);

cairo_private cairo_status_t
_cairo_surface_composite (cairo_operator_t	op,
			  cairo_pattern_t	*src,
			  cairo_pattern_t	*mask,
			  cairo_surface_t	*dst,
			  int			src_x,
			  int			src_y,
			  int			mask_x,
			  int			mask_y,
			  int			dst_x,
			  int			dst_y,
			  unsigned int		width,
			  unsigned int		height);

cairo_private cairo_status_t
_cairo_surface_fill_rectangle (cairo_surface_t	   *surface,
			       cairo_operator_t	    op,
			       const cairo_color_t *color,
			       int		    x,
			       int		    y,
			       int		    width,
			       int		    height);

cairo_private cairo_status_t
_cairo_surface_fill_region (cairo_surface_t	   *surface,
			    cairo_operator_t	    op,
			    const cairo_color_t    *color,
			    pixman_region16_t      *region);

cairo_private cairo_status_t
_cairo_surface_fill_rectangles (cairo_surface_t		*surface,
				cairo_operator_t         op,
				const cairo_color_t	*color,
				cairo_rectangle_int16_t *rects,
				int			 num_rects);

cairo_private cairo_status_t
_cairo_surface_paint (cairo_surface_t	*surface,
		      cairo_operator_t	 op,
		      cairo_pattern_t	*source);

cairo_private cairo_status_t
_cairo_surface_mask (cairo_surface_t	*surface,
		     cairo_operator_t	 op,
		     cairo_pattern_t	*source,
		     cairo_pattern_t	*mask);

cairo_private cairo_status_t
_cairo_surface_stroke (cairo_surface_t		*surface,
		       cairo_operator_t		 op,
		       cairo_pattern_t		*source,
		       cairo_path_fixed_t	*path,
		       cairo_stroke_style_t	*style,
		       cairo_matrix_t		*ctm,
		       cairo_matrix_t		*ctm_inverse,
		       double			 tolerance,
		       cairo_antialias_t	 antialias);

cairo_private cairo_status_t
_cairo_surface_fill (cairo_surface_t	*surface,
		     cairo_operator_t	 op,
		     cairo_pattern_t	*source,
		     cairo_path_fixed_t	*path,
		     cairo_fill_rule_t	 fill_rule,
		     double		 tolerance,
		     cairo_antialias_t	 antialias);

cairo_private cairo_status_t
_cairo_surface_show_glyphs (cairo_surface_t	*surface,
			    cairo_operator_t	 op,
			    cairo_pattern_t	*source,
			    const cairo_glyph_t	*glyphs,
			    int			 num_glyphs,
			    cairo_scaled_font_t	*scaled_font);

cairo_private cairo_status_t
_cairo_surface_composite_trapezoids (cairo_operator_t	op,
				     cairo_pattern_t	*pattern,
				     cairo_surface_t	*dst,
				     cairo_antialias_t	antialias,
				     int		src_x,
				     int		src_y,
				     int		dst_x,
				     int		dst_y,
				     unsigned int	width,
				     unsigned int	height,
				     cairo_trapezoid_t	*traps,
				     int		ntraps);