src/cairo-surface-backend-private.h

/* cairo - a vector graphics library with display and print output
 *
 * Copyright © 2002 University of Southern California
 * Copyright © 2005 Red Hat, Inc.
 *
 * This library is free software; you can redistribute it and/or
 * modify it either under the terms of the GNU Lesser General Public
 * License version 2.1 as published by the Free Software Foundation
 * (the "LGPL") or, at your option, under the terms of the Mozilla
 * Public License Version 1.1 (the "MPL"). If you do not alter this
 * notice, a recipient may use your version of this file under either
 * the MPL or the LGPL.
 *
 * You should have received a copy of the LGPL along with this library
 * in the file COPYING-LGPL-2.1; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin Street, Suite 500, Boston, MA 02110-1335, USA
 * You should have received a copy of the MPL along with this library
 * in the file COPYING-MPL-1.1
 *
 * The contents of this file are subject to the Mozilla Public License
 * Version 1.1 (the "License"); you may not use this file except in
 * compliance with the License. You may obtain a copy of the License at
 * http://www.mozilla.org/MPL/
 *
 * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY
 * OF ANY KIND, either express or implied. See the LGPL or the MPL for
 * the specific language governing rights and limitations.
 *
 * The Original Code is the cairo graphics library.
 *
 * The Initial Developer of the Original Code is University of Southern
 * California.
 *
 * Contributor(s):
 *	Carl D. Worth <cworth@cworth.org>
 */

#ifndef CAIRO_SURFACE_BACKEND_PRIVATE_H
#define CAIRO_SURFACE_BACKEND_PRIVATE_H

#include "cairo-compiler-private.h"
#include "cairo-error-private.h"

CAIRO_BEGIN_DECLS

struct _cairo_surface_backend {
    cairo_surface_type_t type;

    cairo_warn cairo_status_t
    (*finish)			(void			*surface);

    cairo_t *
    (*create_context)		(void			*surface);

    cairo_surface_t *
    (*create_similar)		(void			*surface,
				 cairo_content_t	 content,
				 int			 width,
				 int			 height);
    cairo_surface_t *
    (*create_similar_image)	(void			*surface,
				 cairo_format_t		format,
				 int			 width,
				 int			 height);

    cairo_image_surface_t *
    (*map_to_image)		(void			*surface,
				 const cairo_rectangle_int_t  *extents);
    cairo_int_status_t
    (*unmap_image)		(void			*surface,
				 cairo_image_surface_t	*image);

    cairo_surface_t *
    (*source)			(void                    *abstract_surface,
				 cairo_rectangle_int_t  *extents);

    cairo_warn cairo_status_t
    (*acquire_source_image)	(void                    *abstract_surface,
				 cairo_image_surface_t  **image_out,
				 void                   **image_extra);

    cairo_warn void
    (*release_source_image)	(void                   *abstract_surface,
				 cairo_image_surface_t  *image_out,
				 void                   *image_extra);

    cairo_surface_t *
    (*snapshot)			(void			*surface);

    cairo_warn cairo_int_status_t
    (*copy_page)		(void			*surface);

    cairo_warn cairo_int_status_t
    (*show_page)		(void			*surface);

    /* Get the extents of the current surface. For many surface types
     * this will be as simple as { x=0, y=0, width=surface->width,
     * height=surface->height}.
     *
     * If this function is not implemented, or if it returns
     * FALSE the surface is considered to be
     * boundless and infinite bounds are used for it.
     */
    cairo_bool_t
    (*get_extents)		(void			 *surface,
				 cairo_rectangle_int_t   *extents);

    void
    (*get_font_options)         (void                  *surface,
				 cairo_font_options_t  *options);

    cairo_warn cairo_status_t
    (*flush)                    (void                  *surface,
				 unsigned               flags);

    cairo_warn cairo_status_t
    (*mark_dirty_rectangle)     (void                  *surface,
				 int                    x,
				 int                    y,
				 int                    width,
				 int                    height);

    cairo_warn cairo_int_status_t
    (*paint)			(void			*surface,
				 cairo_operator_t	 op,
				 const cairo_pattern_t	*source,
				 const cairo_clip_t		*clip);

    cairo_warn cairo_int_status_t
    (*mask)			(void			*surface,
				 cairo_operator_t	 op,
				 const cairo_pattern_t	*source,
				 const cairo_pattern_t	*mask,
				 const cairo_clip_t		*clip);

    cairo_warn cairo_int_status_t
    (*stroke)			(void			*surface,
				 cairo_operator_t	 op,
				 const cairo_pattern_t	*source,
				 const cairo_path_fixed_t	*path,
				 const cairo_stroke_style_t	*style,
				 const cairo_matrix_t	*ctm,
				 const cairo_matrix_t	*ctm_inverse,
				 double			 tolerance,
				 cairo_antialias_t	 antialias,
				 const cairo_clip_t		*clip);

    cairo_warn cairo_int_status_t
    (*fill)			(void			*surface,
				 cairo_operator_t	 op,
				 const cairo_pattern_t	*source,
				 const cairo_path_fixed_t	*path,
				 cairo_fill_rule_t	 fill_rule,
				 double			 tolerance,
				 cairo_antialias_t	 antialias,
				 const cairo_clip_t           *clip);

    cairo_warn cairo_int_status_t
    (*fill_stroke)		(void			*surface,
				 cairo_operator_t	 fill_op,
				 const cairo_pattern_t	*fill_source,
				 cairo_fill_rule_t	 fill_rule,
				 double			 fill_tolerance,
				 cairo_antialias_t	 fill_antialias,
				 const cairo_path_fixed_t*path,
				 cairo_operator_t	 stroke_op,
				 const cairo_pattern_t	*stroke_source,
				 const cairo_stroke_style_t	*stroke_style,
				 const cairo_matrix_t	*stroke_ctm,
				 const cairo_matrix_t	*stroke_ctm_inverse,
				 double			 stroke_tolerance,
				 cairo_antialias_t	 stroke_antialias,
				 const cairo_clip_t	*clip);

    cairo_warn cairo_int_status_t
    (*show_glyphs)		(void			*surface,
				 cairo_operator_t	 op,
				 const cairo_pattern_t	*source,
				 cairo_glyph_t		*glyphs,
				 int			 num_glyphs,
				 cairo_scaled_font_t	*scaled_font,
				 const cairo_clip_t     *clip);

    cairo_bool_t
    (*has_show_text_glyphs)	(void			    *surface);

    cairo_warn cairo_int_status_t
    (*show_text_glyphs)		(void			    *surface,
				 cairo_operator_t	     op,
				 const cairo_pattern_t	    *source,
				 const char		    *utf8,
				 int			     utf8_len,
				 cairo_glyph_t		    *glyphs,
				 int			     num_glyphs,
				 const cairo_text_cluster_t *clusters,
				 int			     num_clusters,
				 cairo_text_cluster_flags_t  cluster_flags,
				 cairo_scaled_font_t	    *scaled_font,
				 const cairo_clip_t               *clip);

    const char **
    (*get_supported_mime_types)	(void			    *surface);
};

cairo_private cairo_status_t
_cairo_surface_default_acquire_source_image (void                    *surface,
					     cairo_image_surface_t  **image_out,
					     void                   **image_extra);

cairo_private void
_cairo_surface_default_release_source_image (void                   *surface,
					     cairo_image_surface_t  *image,
					     void                   *image_extra);

cairo_private cairo_surface_t *
_cairo_surface_default_source (void *surface,
			       cairo_rectangle_int_t *extents);

CAIRO_END_DECLS

#endif /* CAIRO_SURFACE_BACKEND_PRIVATE_H */