/* cairo - a vector graphics library with display and print output

 *

 * Copyright © 2005 Red Hat, Inc

 * Copyright © 2007 Adrian Johnson

 *

 * 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 Red Hat, Inc.

 *

 * Contributor(s):

 *  Carl Worth <cworth@cworth.org>

 *  Keith Packard <keithp@keithp.com>

 *  Adrian Johnson <ajohnson@redneon.com>

 */

/* The paginated surface layer exists to provide as much code sharing

 * as possible for the various paginated surface backends in cairo

 * (PostScript, PDF, etc.). See cairo-paginated-private.h for

 * more details on how it works and how to use it.

 */

#include "cairoint.h"

#include "cairo-paginated-private.h"

#include "cairo-paginated-surface-private.h"

#include "cairo-recording-surface-private.h"

#include "cairo-analysis-surface-private.h"

#include "cairo-error-private.h"

#include "cairo-image-surface-private.h"

#include "cairo-surface-subsurface-inline.h"

static const cairo_surface_backend_t cairo_paginated_surface_backend;

static cairo_int_status_t

_cairo_paginated_surface_show_page (void *abstract_surface);

static cairo_surface_t *

_cairo_paginated_surface_create_similar (void     *abstract_surface,

           cairo_content_t   content,

           int       width,

           int       height)

{

    cairo_rectangle_t rect;

    rect.x = rect.y = 0.;

    rect.width = width;

    rect.height = height;

    return cairo_recording_surface_create (content, &rect);

}

static cairo_surface_t *

_create_recording_surface_for_target (cairo_surface_t *target,

              cairo_content_t content)

{

    cairo_rectangle_int_t rect;

    if (_cairo_surface_get_extents (target, &rect)) {

  cairo_rectangle_t recording_extents;

  recording_extents.x = rect.x;

  recording_extents.y = rect.y;

  recording_extents.width = rect.width;

  recording_extents.height = rect.height;

  return cairo_recording_surface_create (content, &recording_extents);

    } else {

  return cairo_recording_surface_create (content, NULL);

    }

}

cairo_surface_t *

_cairo_paginated_surface_create (cairo_surface_t        *target,

         cairo_content_t         content,

         const cairo_paginated_surface_backend_t  *backend)

{

    cairo_paginated_surface_t *surface;

    cairo_status_t status;

    surface = _cairo_malloc (sizeof (cairo_paginated_surface_t));

    if (unlikely (surface == NULL)) {

  status = _cairo_error (CAIRO_STATUS_NO_MEMORY);

  goto FAIL;

    }

    _cairo_surface_init (&surface->base,

       &cairo_paginated_surface_backend,

       NULL, /* device */

       content,

       target->is_vector);

    /* Override surface->base.type with target's type so we don't leak

     * evidence of the paginated wrapper out to the user. */

    surface->base.type = target->type;

    surface->target = cairo_surface_reference (target);

    surface->content = content;

    surface->backend = backend;

    surface->recording_surface = _create_recording_surface_for_target (target, content);

    status = surface->recording_surface->status;

    if (unlikely (status))

  goto FAIL_CLEANUP_SURFACE;

    surface->page_num = 1;

    surface->base.is_clear = TRUE;

    return &surface->base;

  FAIL_CLEANUP_SURFACE:

    cairo_surface_destroy (target);

    free (surface);

  FAIL:

    return _cairo_surface_create_in_error (status);

}

cairo_bool_t

_cairo_surface_is_paginated (cairo_surface_t *surface)

{

    return surface->backend == &cairo_paginated_surface_backend;

}

cairo_surface_t *

_cairo_paginated_surface_get_target (cairo_surface_t *surface)

{

    cairo_paginated_surface_t *paginated_surface;

    assert (_cairo_surface_is_paginated (surface));

    paginated_surface = (cairo_paginated_surface_t *) surface;

    return paginated_surface->target;

}

cairo_surface_t *

_cairo_paginated_surface_get_recording (cairo_surface_t *surface)

{

    cairo_paginated_surface_t *paginated_surface;

    assert (_cairo_surface_is_paginated (surface));

    paginated_surface = (cairo_paginated_surface_t *) surface;

    return paginated_surface->recording_surface;

}

cairo_status_t

_cairo_paginated_surface_set_size (cairo_surface_t  *surface,

           int       width,

           int       height)

{

    cairo_paginated_surface_t *paginated_surface;

    cairo_status_t status;

    cairo_rectangle_t recording_extents;

    assert (_cairo_surface_is_paginated (surface));

    paginated_surface = (cairo_paginated_surface_t *) surface;

    recording_extents.x = 0;

    recording_extents.y = 0;

    recording_extents.width = width;

    recording_extents.height = height;

    cairo_surface_destroy (paginated_surface->recording_surface);

    paginated_surface->recording_surface = cairo_recording_surface_create (paginated_surface->content,

                     &recording_extents);

    status = paginated_surface->recording_surface->status;

    if (unlikely (status))

  return _cairo_surface_set_error (surface, status);

    return CAIRO_STATUS_SUCCESS;

}

static cairo_status_t

_cairo_paginated_surface_finish (void *abstract_surface)

{

    cairo_paginated_surface_t *surface = abstract_surface;

    cairo_status_t status = CAIRO_STATUS_SUCCESS;

    if (! surface->base.is_clear || surface->page_num == 1) {

  /* Bypass some of the sanity checking in cairo-surface.c, as we

   * know that the surface is finished...

   */

  status = _cairo_paginated_surface_show_page (surface);

    }

     /* XXX We want to propagate any errors from destroy(), but those are not

      * returned via the api. So we need to explicitly finish the target,

      * and check the status afterwards. However, we can only call finish()

      * on the target, if we own it.

      */

    if (CAIRO_REFERENCE_COUNT_GET_VALUE (&surface->target->ref_count) == 1)

  cairo_surface_finish (surface->target);

    if (status == CAIRO_STATUS_SUCCESS)

  status = cairo_surface_status (surface->target);

    cairo_surface_destroy (surface->target);

    cairo_surface_finish (surface->recording_surface);

    if (status == CAIRO_STATUS_SUCCESS)

  status = cairo_surface_status (surface->recording_surface);

    cairo_surface_destroy (surface->recording_surface);

    return status;

}

static cairo_surface_t *

_cairo_paginated_surface_create_image_surface (void        *abstract_surface,

                 int    width,

                 int    height)

{

    cairo_paginated_surface_t *surface = abstract_surface;

    cairo_surface_t *image;

    cairo_font_options_t options;

    image = _cairo_image_surface_create_with_content (surface->content,

                  width,

                  height);

    cairo_surface_get_font_options (&surface->base, &options);

    _cairo_surface_set_font_options (image, &options);

    return image;

}

static cairo_surface_t *

_cairo_paginated_surface_source (void        *abstract_surface,

         cairo_rectangle_int_t *extents)

{

    cairo_paginated_surface_t *surface = abstract_surface;

    return _cairo_surface_get_source (surface->target, extents);

}

static cairo_status_t

_cairo_paginated_surface_acquire_source_image (void        *abstract_surface,

                 cairo_image_surface_t **image_out,

                 void      **image_extra)

{

    cairo_paginated_surface_t *surface = abstract_surface;

    cairo_bool_t is_bounded;

    cairo_surface_t *image;

    cairo_status_t status;

    cairo_rectangle_int_t extents;

    is_bounded = _cairo_surface_get_extents (surface->target, &extents);

    if (! is_bounded)

  return CAIRO_INT_STATUS_UNSUPPORTED;

    image = _cairo_paginated_surface_create_image_surface (surface,

                 extents.width,

                 extents.height);

    status = _cairo_recording_surface_replay (surface->recording_surface, image);

    if (unlikely (status)) {

  cairo_surface_destroy (image);

  return status;

    }

    *image_out = (cairo_image_surface_t*) image;

    *image_extra = NULL;

    return CAIRO_STATUS_SUCCESS;

}

static void

_cairo_paginated_surface_release_source_image (void   *abstract_surface,

                 cairo_image_surface_t *image,

                 void        *image_extra)

{

    cairo_surface_destroy (&image->base);

}

static cairo_int_status_t

_paint_thumbnail_image (cairo_paginated_surface_t *surface,

      int                        width,

      int                        height)

{

    cairo_surface_pattern_t pattern;

    cairo_rectangle_int_t extents;

    double x_scale;

    double y_scale;

    cairo_surface_t *image = NULL;

    cairo_surface_t *opaque = NULL;

    cairo_status_t status = CAIRO_STATUS_SUCCESS;

    _cairo_surface_get_extents (surface->target, &extents);

    x_scale = (double)width / extents.width;

    y_scale = (double)height / extents.height;

    image = _cairo_paginated_surface_create_image_surface (surface, width, height);

    cairo_surface_set_device_scale (image, x_scale, y_scale);

    cairo_surface_set_device_offset (image, -extents.x*x_scale, -extents.y*y_scale);

    status = _cairo_recording_surface_replay (surface->recording_surface, image);

    if (unlikely (status))

  goto cleanup;

    /* flatten transparency */

    opaque = cairo_image_surface_create (CAIRO_FORMAT_RGB24, width, height);

    if (unlikely (opaque->status)) {

  status = opaque->status;

  goto cleanup;

    }

    status = _cairo_surface_paint (opaque,

           CAIRO_OPERATOR_SOURCE,

           &_cairo_pattern_white.base,

           NULL);

    if (unlikely (status))

  goto cleanup;

    _cairo_pattern_init_for_surface (&pattern, image);

    pattern.base.filter = CAIRO_FILTER_NEAREST;

    status = _cairo_surface_paint (opaque, CAIRO_OPERATOR_OVER, &pattern.base, NULL);

    _cairo_pattern_fini (&pattern.base);

    if (unlikely (status))

  goto cleanup;

    status = surface->backend->set_thumbnail_image (surface->target, (cairo_image_surface_t *)opaque);

  cleanup:

    if (image)

  cairo_surface_destroy (image);

    if (opaque)

  cairo_surface_destroy (opaque);

    return status;

}

static cairo_int_status_t

_paint_fallback_image (cairo_paginated_surface_t *surface,

           cairo_rectangle_int_t     *rect)

{

    double x_scale = surface->base.x_fallback_resolution / surface->target->x_resolution;

    double y_scale = surface->base.y_fallback_resolution / surface->target->y_resolution;

    int x, y, width, height;

    cairo_status_t status;

    cairo_surface_t *image;

    cairo_surface_pattern_t pattern;

    cairo_clip_t *clip;

    x = rect->x;

    y = rect->y;

    width = rect->width;

    height = rect->height;

    image = _cairo_paginated_surface_create_image_surface (surface,

                 ceil (width  * x_scale),

                 ceil (height * y_scale));

    cairo_surface_set_device_scale (image, x_scale, y_scale);

    /* set_device_offset just sets the x0/y0 components of the matrix;

     * so we have to do the scaling manually. */

    cairo_surface_set_device_offset (image, -x*x_scale, -y*y_scale);

    status = _cairo_recording_surface_replay (surface->recording_surface, image);

    if (unlikely (status))

  goto CLEANUP_IMAGE;

    _cairo_pattern_init_for_surface (&pattern, image);

    cairo_matrix_init (&pattern.base.matrix,

           x_scale, 0, 0, y_scale, -x*x_scale, -y*y_scale);

    /* the fallback should be rendered at native resolution, so disable

     * filtering (if possible) to avoid introducing potential artifacts. */

    pattern.base.filter = CAIRO_FILTER_NEAREST;

    clip = _cairo_clip_intersect_rectangle (NULL, rect);

    status = _cairo_surface_paint (surface->target,

           CAIRO_OPERATOR_SOURCE,

           &pattern.base, clip);

    _cairo_clip_destroy (clip);

    _cairo_pattern_fini (&pattern.base);

CLEANUP_IMAGE:

    cairo_surface_destroy (image);

    return status;

}

static cairo_int_status_t

_paint_page (cairo_paginated_surface_t *surface)

{

    cairo_surface_t *analysis;

    cairo_int_status_t status;

    cairo_bool_t has_supported, has_page_fallback, has_finegrained_fallback;

    if (unlikely (surface->target->status))

  return surface->target->status;

    analysis = _cairo_analysis_surface_create (surface->target);

    if (unlikely (analysis->status))

  return _cairo_surface_set_error (surface->target, analysis->status);

    status = surface->backend->set_paginated_mode (surface->target,

                                    CAIRO_PAGINATED_MODE_ANALYZE);

    if (unlikely (status))

  goto FAIL;

    status = _cairo_recording_surface_replay_and_create_regions (surface->recording_surface,

                 NULL, analysis, FALSE);

    if (status)

  goto FAIL;

    assert (analysis->status == CAIRO_STATUS_SUCCESS);

     if (surface->backend->set_bounding_box) {

   cairo_box_t bbox;

   _cairo_analysis_surface_get_bounding_box (analysis, &bbox);

   status = surface->backend->set_bounding_box (surface->target, &bbox);

   if (unlikely (status))

       goto FAIL;

     }

    if (surface->backend->set_fallback_images_required) {

  cairo_bool_t has_fallbacks = _cairo_analysis_surface_has_unsupported (analysis);

  status = surface->backend->set_fallback_images_required (surface->target,

                 has_fallbacks);

  if (unlikely (status))

      goto FAIL;

    }

    /* Finer grained fallbacks are currently only supported for some

     * surface types */

    if (surface->backend->supports_fine_grained_fallbacks != NULL &&

  surface->backend->supports_fine_grained_fallbacks (surface->target))

    {

  has_supported = _cairo_analysis_surface_has_supported (analysis);

  has_page_fallback = FALSE;

  has_finegrained_fallback = _cairo_analysis_surface_has_unsupported (analysis);

    }

    else

    {

  if (_cairo_analysis_surface_has_unsupported (analysis)) {

      has_supported = FALSE;

      has_page_fallback = TRUE;

  } else {

      has_supported = TRUE;

      has_page_fallback = FALSE;

  }

  has_finegrained_fallback = FALSE;

    }

    if (has_supported) {

  status = surface->backend->set_paginated_mode (surface->target,

                   CAIRO_PAGINATED_MODE_RENDER);

  if (unlikely (status))

      goto FAIL;

  status = _cairo_recording_surface_replay_region (surface->recording_surface,

               NULL,

               surface->target,

               CAIRO_RECORDING_REGION_NATIVE);

  assert (status != CAIRO_INT_STATUS_UNSUPPORTED);

  if (unlikely (status))

      goto FAIL;

    }

    if (has_page_fallback) {

  cairo_rectangle_int_t extents;

  cairo_bool_t is_bounded;

  status = surface->backend->set_paginated_mode (surface->target,

                   CAIRO_PAGINATED_MODE_FALLBACK);

  if (unlikely (status))

      goto FAIL;

  is_bounded = _cairo_surface_get_extents (surface->target, &extents);

  if (! is_bounded) {

      status = CAIRO_INT_STATUS_UNSUPPORTED;

      goto FAIL;

  }

  status = _paint_fallback_image (surface, &extents);

  if (unlikely (status))

      goto FAIL;

    }

    if (has_finegrained_fallback) {

        cairo_region_t *region;

        int num_rects, i;

  status = surface->backend->set_paginated_mode (surface->target,

                                  CAIRO_PAGINATED_MODE_FALLBACK);

  if (unlikely (status))

      goto FAIL;

  region = _cairo_analysis_surface_get_unsupported (analysis);

  num_rects = cairo_region_num_rectangles (region);

  for (i = 0; i < num_rects; i++) {

      cairo_rectangle_int_t rect;

      cairo_region_get_rectangle (region, i, &rect);

      status = _paint_fallback_image (surface, &rect);

      if (unlikely (status))

    goto FAIL;

  }

    }

    if (surface->backend->requires_thumbnail_image) {

  int width, height;

  if (surface->backend->requires_thumbnail_image (surface->target, &width, &height))

      _paint_thumbnail_image (surface, width, height);

    }

  FAIL:

    cairo_surface_destroy (analysis);

    return _cairo_surface_set_error (surface->target, status);

}

static cairo_status_t

_start_page (cairo_paginated_surface_t *surface)

{

    if (surface->target->status)

  return surface->target->status;

    if (! surface->backend->start_page)

  return CAIRO_STATUS_SUCCESS;

    return _cairo_surface_set_error (surface->target,

                          surface->backend->start_page (surface->target));

}

static cairo_int_status_t

_cairo_paginated_surface_copy_page (void *abstract_surface)

{

    cairo_status_t status;

    cairo_paginated_surface_t *surface = abstract_surface;

    status = _start_page (surface);

    if (unlikely (status))

  return status;

    status = _paint_page (surface);

    if (unlikely (status))

  return status;

    surface->page_num++;

    /* XXX: It might make sense to add some support here for calling

     * cairo_surface_copy_page on the target surface. It would be an

     * optimization for the output, but the interaction with image

     * fallbacks gets tricky. For now, we just let the target see a

     * show_page and we implement the copying by simply not destroying

     * the recording-surface. */

    cairo_surface_show_page (surface->target);

    return cairo_surface_status (surface->target);

}

static cairo_int_status_t

_cairo_paginated_surface_show_page (void *abstract_surface)

{

    cairo_status_t status;

    cairo_paginated_surface_t *surface = abstract_surface;

    status = _start_page (surface);

    if (unlikely (status))

  return status;

    status = _paint_page (surface);

    if (unlikely (status))

  return status;

    cairo_surface_show_page (surface->target);

    status = surface->target->status;

    if (unlikely (status))

  return status;

    status = surface->recording_surface->status;

    if (unlikely (status))

  return status;

    if (! surface->base.finished) {

  cairo_surface_destroy (surface->recording_surface);

  surface->recording_surface = _create_recording_surface_for_target (surface->target,

                     surface->content);

  status = surface->recording_surface->status;

  if (unlikely (status))

      return status;

  surface->page_num++;

  surface->base.is_clear = TRUE;

    }

    return CAIRO_STATUS_SUCCESS;

}

static cairo_bool_t

_cairo_paginated_surface_get_extents (void                *abstract_surface,

              cairo_rectangle_int_t   *rectangle)

{

    cairo_paginated_surface_t *surface = abstract_surface;

    return _cairo_surface_get_extents (surface->target, rectangle);

}

static void

_cairo_paginated_surface_get_font_options (void                  *abstract_surface,

             cairo_font_options_t  *options)

{

    cairo_paginated_surface_t *surface = abstract_surface;

    cairo_surface_get_font_options (surface->target, options);

}

static cairo_int_status_t

_cairo_paginated_surface_paint (void      *abstract_surface,

        cairo_operator_t   op,

        const cairo_pattern_t *source,

        const cairo_clip_t  *clip)

{

    cairo_paginated_surface_t *surface = abstract_surface;

    return _cairo_surface_paint (surface->recording_surface, op, source, clip);

}

static cairo_int_status_t

_cairo_paginated_surface_mask (void   *abstract_surface,

             cairo_operator_t  op,

             const cairo_pattern_t  *source,

             const cairo_pattern_t  *mask,

             const cairo_clip_t   *clip)

{

    cairo_paginated_surface_t *surface = abstract_surface;

    return _cairo_surface_mask (surface->recording_surface, op, source, mask, clip);

}

static cairo_int_status_t

_cairo_paginated_surface_stroke (void     *abstract_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_paginated_surface_t *surface = abstract_surface;

    return _cairo_surface_stroke (surface->recording_surface, op, source,

          path, style,

          ctm, ctm_inverse,

          tolerance, antialias,

          clip);

}

static cairo_int_status_t

_cairo_paginated_surface_fill (void     *abstract_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_paginated_surface_t *surface = abstract_surface;

    return _cairo_surface_fill (surface->recording_surface, op, source,

        path, fill_rule,

        tolerance, antialias,

        clip);

}

static cairo_bool_t

_cairo_paginated_surface_has_show_text_glyphs (void *abstract_surface)

{

    cairo_paginated_surface_t *surface = abstract_surface;

    return cairo_surface_has_show_text_glyphs (surface->target);

}

static cairo_int_status_t

_cairo_paginated_surface_show_text_glyphs (void           *abstract_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)

{

    cairo_paginated_surface_t *surface = abstract_surface;

    return _cairo_surface_show_text_glyphs (surface->recording_surface, op, source,

              utf8, utf8_len,

              glyphs, num_glyphs,

              clusters, num_clusters,

              cluster_flags,

              scaled_font,

              clip);

}

static const char **

_cairo_paginated_surface_get_supported_mime_types (void *abstract_surface)

{

    cairo_paginated_surface_t *surface = abstract_surface;

    if (surface->target->backend->get_supported_mime_types)

  return surface->target->backend->get_supported_mime_types (surface->target);

    return NULL;

}

static cairo_int_status_t

_cairo_paginated_surface_tag (void       *abstract_surface,

            cairo_bool_t                begin,

            const char                 *tag_name,

            const char                 *attributes)

{

    cairo_paginated_surface_t *surface = abstract_surface;

    return _cairo_surface_tag (surface->recording_surface,

             begin, tag_name, attributes);

}

static cairo_surface_t *

_cairo_paginated_surface_snapshot (void *abstract_other)

{

    cairo_paginated_surface_t *other = abstract_other;

    return other->recording_surface->backend->snapshot (other->recording_surface);

}

static cairo_t *

_cairo_paginated_context_create (void *target)

{

    cairo_paginated_surface_t *surface = target;

    if (_cairo_surface_is_subsurface (&surface->base))

  surface = (cairo_paginated_surface_t *)

      _cairo_surface_subsurface_get_target (&surface->base);

    return surface->recording_surface->backend->create_context (target);

}

static const cairo_surface_backend_t cairo_paginated_surface_backend = {

    CAIRO_INTERNAL_SURFACE_TYPE_PAGINATED,

    _cairo_paginated_surface_finish,

    _cairo_paginated_context_create,

    _cairo_paginated_surface_create_similar,

    NULL, /* create similar image */

    NULL, /* map to image */

    NULL, /* unmap image */

    _cairo_paginated_surface_source,

    _cairo_paginated_surface_acquire_source_image,

    _cairo_paginated_surface_release_source_image,

    _cairo_paginated_surface_snapshot,

    _cairo_paginated_surface_copy_page,

    _cairo_paginated_surface_show_page,

    _cairo_paginated_surface_get_extents,

    _cairo_paginated_surface_get_font_options,

    NULL, /* flush */

    NULL, /* mark_dirty_rectangle */

    _cairo_paginated_surface_paint,

    _cairo_paginated_surface_mask,

    _cairo_paginated_surface_stroke,

    _cairo_paginated_surface_fill,

    NULL, /* fill_stroke */

    NULL, /* show_glyphs */

    _cairo_paginated_surface_has_show_text_glyphs,

    _cairo_paginated_surface_show_text_glyphs,

    _cairo_paginated_surface_get_supported_mime_types,

    _cairo_paginated_surface_tag,

};