/* cairo - a vector graphics library with display and print output
 *
 * Copyright © 2002 University of Southern California
 * Copyright © 2005 Red Hat, Inc.
 *
 * "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>
 *
 * Alternatively, the contents of this file may be used under the terms
 * of the _____ license (the  "[___] License"), in which case the
 * provisions of [______] License are applicable instead of those
 * above. If you wish to allow use of your version of this file only
 * under the terms of the [____] License and not to allow others to use
 * your version of this file under the MPL, indicate your decision by
 * deleting the provisions above and replace them with the notice and
 * other provisions required by the [___] License. If you do not delete
 * the provisions above, a recipient may use your version of this file
 * under either the MPL or the [___] License."
 *
 * NOTE: The text of this Exhibit A may differ slightly from the text
 * of the notices in the Source Code files of the Original Code. You
 * should use the text of this Exhibit A rather than the text found in
 * the Original Code Source Code for Your Modifications. 
 */

#ifndef CAIRO_SURFACE_PRIVATE_H
#define CAIRO_SURFACE_PRIVATE_H

#include "cairo.h"

#include "cairo-types-private.h"
#include "cairo-reference-count-private.h"

struct _cairo_surface {
    const cairo_surface_backend_t *backend;

    /* We allow surfaces to override the backend->type by shoving something
     * else into surface->type. This is for "wrapper" surfaces that want to
     * hide their internal type from the user-level API. */
    cairo_surface_type_t type;

    cairo_content_t content;

    cairo_reference_count_t ref_count;
    cairo_status_t status;
    cairo_bool_t finished;
    cairo_user_data_array_t user_data;

    cairo_matrix_t device_transform;
    cairo_matrix_t device_transform_inverse;

    /* The actual resolution of the device, in dots per inch. */
    double x_resolution;
    double y_resolution;

    /* The resolution that should be used when generating image-based
     * fallback; generally only used by the analysis/paginated
     * surfaces
     */
    double x_fallback_resolution;
    double y_fallback_resolution;

    cairo_clip_t *clip;

    /*
     * Each time a clip region is modified, it gets the next value in this
     * sequence.  This means that clip regions for this surface are uniquely
     * identified and updates to the clip can be readily identified
     */
    unsigned int next_clip_serial;
    /*
     * The serial number of the current clip.  This is set when
     * the surface clipping is set.  The gstate can then cheaply
     * check whether the surface clipping is already correct before
     * performing a rendering operation.
     *
     * The special value '0' is reserved for the unclipped case.
     */
    unsigned int current_clip_serial;

    /* A "snapshot" surface is immutable. See _cairo_surface_snapshot. */
    cairo_bool_t is_snapshot;

    /*
     * Surface font options, falling back to backend's default options,
     * and set using _cairo_surface_set_font_options(), and propagated by
     * cairo_surface_create_similar().
     */
    cairo_bool_t has_font_options;
    cairo_font_options_t font_options;
};

#endif /* CAIRO_SURFACE_PRIVATE_H */
