Quelle  cairo-ps-surface.c

/* -*- Mode: c; c-basic-offset: 4; indent-tabs-mode: t; tab-width: 8; -*- */
/* cairo - a vector graphics library with display and print output
 *
 * Copyright © 2003 University of Southern California
 * Copyright © 2005 Red Hat, Inc
 * Copyright © 2007,2008 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 University of Southern
 * California.
 *
 * Contributor(s):
 * Carl D. Worth <cworth@cworth.org>
 * Kristian Høgsberg <krh@redhat.com>
 * Keith Packard <keithp@keithp.com>
 * Adrian Johnson <ajohnson@redneon.com>
 */


/*
 * Design of the PS output:
 *
 * The PS output is harmonised with the PDF operations using PS procedures
 * to emulate the PDF operators.
 *
 * This has a number of advantages:
 *   1. A large chunk of code is shared between the PDF and PS backends.
 *      See cairo-pdf-operators.
 *   2. Using gs to do PS -> PDF and PDF -> PS will always work well.
 */

#define _DEFAULT_SOURCE /* for ctime_r(), snprintf(), strdup() */
#include "cairoint.h"

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

#include "cairo-pdf-operators-private.h"
#include "cairo-pdf-shading-private.h"

#include "cairo-array-private.h"
#include "cairo-composite-rectangles-private.h"
#include "cairo-default-context-private.h"
#include "cairo-error-private.h"
#include "cairo-image-info-private.h"
#include "cairo-image-surface-inline.h"
#include "cairo-list-inline.h"
#include "cairo-output-stream-private.h"
#include "cairo-paginated-private.h"
#include "cairo-recording-surface-inline.h"
#include "cairo-recording-surface-private.h"
#include "cairo-scaled-font-subsets-private.h"
#include "cairo-surface-clipper-private.h"
#include "cairo-surface-snapshot-inline.h"
#include "cairo-surface-subsurface-private.h"
#include "cairo-tag-attributes-private.h"
#include "cairo-type3-glyph-surface-private.h"

#include <stdio.h>
#include <ctype.h>
#include <time.h>
#include <zlib.h>
#include <errno.h>

/* Forms are emitted at the start and stored in memory so we limit the
 * total size of all forms to prevent running out of memory. If this
 * limit is exceeded, surfaces that would be stored in forms are
 * emitted each time the surface is used. */
#define MAX_L2_FORM_DATA (256*1024)
#define MAX_L3_FORM_DATA (2*1024*1024) /* Assume Level 3 printers have more memory */

/* #define DEBUG_PS 1 */

#if DEBUG_PS
#define DEBUG_FALLBACK(s) \
    fprintf (stderr, "%s::%d -- %s\n", __FUNCTION__, __LINE__, (s))
#else
#define DEBUG_FALLBACK(s)
#endif

#ifndef HAVE_CTIME_R
static char *ctime_r(const time_t *timep, char *buf)
{
    (void)buf;
    return ctime(timep);
}
#endif

/**
 * SECTION:cairo-ps
 * @Title: PostScript Surfaces
 * @Short_Description: Rendering PostScript documents
 * @See_Also: #cairo_surface_t
 *
 * The PostScript surface is used to render cairo graphics to Adobe
 * PostScript files and is a multi-page vector surface backend.
 *
 * The following mime types are supported on source patterns:
 * %CAIRO_MIME_TYPE_JPEG, %CAIRO_MIME_TYPE_UNIQUE_ID,
 * %CAIRO_MIME_TYPE_CCITT_FAX, %CAIRO_MIME_TYPE_CCITT_FAX_PARAMS,
 * %CAIRO_MIME_TYPE_EPS, %CAIRO_MIME_TYPE_EPS_PARAMS.
 *
 * Source surfaces used by the PostScript surface that have a
 * %CAIRO_MIME_TYPE_UNIQUE_ID mime type will be stored in PostScript
 * printer memory for the duration of the print
 * job. %CAIRO_MIME_TYPE_UNIQUE_ID should only be used for small
 * frequently used sources.
 *
 * The %CAIRO_MIME_TYPE_CCITT_FAX and %CAIRO_MIME_TYPE_CCITT_FAX_PARAMS mime types
 * are documented in [CCITT Fax Images][ccitt].
 *
 * # Embedding EPS files # {#eps}
 *
 * Encapsulated PostScript files can be embedded in the PS output by
 * setting the CAIRO_MIME_TYPE_EPS mime data on a surface to the EPS
 * data and painting the surface.  The EPS will be scaled and
 * translated to the extents of the surface the EPS data is attached
 * to.
 *
 * The %CAIRO_MIME_TYPE_EPS mime type requires the
 * %CAIRO_MIME_TYPE_EPS_PARAMS mime data to also be provided in order
 * to specify the embeddding parameters.  %CAIRO_MIME_TYPE_EPS_PARAMS
 * mime data must contain a string of the form "bbox=[llx lly urx
 * ury]" that specifies the bounding box (in PS coordinates) of the
 * EPS graphics. The parameters are: lower left x, lower left y, upper
 * right x, upper right y. Normally the bbox data is identical to the
 * \%\%\%BoundingBox data in the EPS file.
 *
 **/

/**
 * CAIRO_HAS_PS_SURFACE:
 *
 * Defined if the PostScript surface backend is available.
 * This macro can be used to conditionally compile backend-specific code.
 *
 * Since: 1.2
 **/

typedef enum {
    CAIRO_PS_COMPRESS_NONE,
    CAIRO_PS_COMPRESS_LZW,
    CAIRO_PS_COMPRESS_DEFLATE
} cairo_ps_compress_t;

typedef enum {
    CAIRO_EMIT_SURFACE_ANALYZE,
    CAIRO_EMIT_SURFACE_EMIT,
    CAIRO_EMIT_SURFACE_EMIT_FORM
} cairo_emit_surface_mode_t;

typedef struct  {
    /* input params */
    cairo_surface_t *src_surface;
    unsigned int regions_id;
    cairo_operator_t op;
    const cairo_rectangle_int_t *src_surface_extents;
    cairo_bool_t src_surface_bounded;
    const cairo_rectangle_int_t *src_op_extents; /* operation extents in src space */
    cairo_filter_t filter;
    cairo_bool_t stencil_mask; /* TRUE if source is to be used as a mask */

    /* output params */
    cairo_bool_t is_image; /* returns TRUE if PS image will be emitted */
                           /*         FALSE if recording will be emitted */
    long approx_size;
    int eod_count;
} cairo_emit_surface_params_t;

static const cairo_surface_backend_t cairo_ps_surface_backend;
static const cairo_paginated_surface_backend_t cairo_ps_surface_paginated_backend;

static cairo_bool_t
_cairo_ps_surface_get_extents (void         *abstract_surface,
          cairo_rectangle_int_t   *rectangle);

static void
_cairo_ps_form_emit (void *entry, void *closure);

static const cairo_ps_level_t _cairo_ps_levels[] =
{
    CAIRO_PS_LEVEL_2,
    CAIRO_PS_LEVEL_3
};

#define CAIRO_PS_LEVEL_LAST ARRAY_LENGTH (_cairo_ps_levels)

static const char * _cairo_ps_level_strings[CAIRO_PS_LEVEL_LAST] =
{
    "PS Level 2",
    "PS Level 3"
};

static const char *_cairo_ps_supported_mime_types[] =
{
    CAIRO_MIME_TYPE_JPEG,
    CAIRO_MIME_TYPE_UNIQUE_ID,
    CAIRO_MIME_TYPE_CCITT_FAX,
    CAIRO_MIME_TYPE_CCITT_FAX_PARAMS,
    CAIRO_MIME_TYPE_EPS,
    CAIRO_MIME_TYPE_EPS_PARAMS,
    NULL
};

typedef struct _cairo_page_standard_media {
    const char *name;
    int width;
    int height;
} cairo_page_standard_media_t;

static const cairo_page_standard_media_t _cairo_page_standard_media[] =
{
    { "A0",       2384, 3371 },
    { "A1",       1685, 2384 },
    { "A2",       1190, 1684 },
    { "A3",        842, 1190 },
    { "A4",        595,  842 },
    { "A5",        420,  595 },
    { "B4",        729, 1032 },
    { "B5",        516,  729 },
    { "Letter",    612,  792 },
    { "Tabloid",   792, 1224 },
    { "Ledger",   1224,  792 },
    { "Legal",     612, 1008 },
    { "Statement", 396,  612 },
    { "Executive", 540,  720 },
    { "Folio",     612,  936 },
    { "Quarto",    610,  780 },
    { "10x14",     720, 1008 },
};

typedef struct _cairo_page_media {
    char *name;
    int width;
    int height;
    cairo_list_t link;
} cairo_page_media_t;

static void
_cairo_ps_form_init_key (cairo_ps_form_t *key)
{
    key->base.hash = _cairo_hash_bytes (_CAIRO_HASH_INIT_VALUE,
     key->unique_id, key->unique_id_length);
}

static cairo_bool_t
_cairo_ps_form_equal (const void *key_a, const void *key_b)
{
    const cairo_ps_form_t *a = key_a;
    const cairo_ps_form_t *b = key_b;

    if (a->filter != b->filter)
 return FALSE;

    if (a->unique_id_length != b->unique_id_length)
 return FALSE;

    return memcmp (a->unique_id, b->unique_id, a->unique_id_length) == 0;
}

static void
_cairo_ps_form_pluck (void *entry, void *closure)
{
    cairo_ps_form_t *surface_entry = entry;
    cairo_hash_table_t *patterns = closure;

    _cairo_hash_table_remove (patterns, &surface_entry->base);
    free (surface_entry->unique_id);
    if (_cairo_surface_is_recording (surface_entry->src_surface) && surface_entry->regions_id != 0)
 _cairo_recording_surface_region_array_remove (surface_entry->src_surface, surface_entry->regions_id);
    cairo_surface_destroy (surface_entry->src_surface);
    free (surface_entry);
}

static void
_cairo_ps_surface_emit_header (cairo_ps_surface_t *surface)
{
    char ctime_buf[26];
    time_t now;
    char **comments;
    int i, num_comments;
    int level;
    const char *eps_header = "";
    cairo_bool_t has_bbox;

    if (surface->has_creation_date)
 now = surface->creation_date;
    else
 now = time (NULL);

    if (surface->ps_level_used == CAIRO_PS_LEVEL_2)
 level = 2;
    else
 level = 3;

    if (surface->eps)
 eps_header = " EPSF-3.0";

    _cairo_output_stream_printf (surface->final_stream,
     "%%!PS-Adobe-3.0%s\n"
     "%%%%Creator: cairo %s (https://cairographics.org)\n",
     eps_header,
     cairo_version_string ());

    if (!getenv ("CAIRO_DEBUG_PS_NO_DATE")) {
 _cairo_output_stream_printf (surface->final_stream,
         "%%%%CreationDate: %s",
         ctime_r (&now, ctime_buf));
    }

    _cairo_output_stream_printf (surface->final_stream,
     "%%%%Pages: %d\n"
     "%%%%DocumentData: Clean7Bit\n"
     "%%%%LanguageLevel: %d\n",
     surface->num_pages,
     level);

    if (!cairo_list_is_empty (&surface->document_media)) {
 cairo_page_media_t *page;
 cairo_bool_t first = TRUE;

 cairo_list_foreach_entry (page, cairo_page_media_t, &surface->document_media, link) {
     if (first) {
  _cairo_output_stream_printf (surface->final_stream,
          "%%%%DocumentMedia: ");
  first = FALSE;
     } else {
  _cairo_output_stream_printf (surface->final_stream,
          "%%%%+ ");
     }
     _cairo_output_stream_printf (surface->final_stream,
      "%s %d %d 0 () ()\n",
      page->name,
      page->width,
      page->height);
 }
    }

    has_bbox = FALSE;
    num_comments = _cairo_array_num_elements (&surface->dsc_header_comments);
    comments = _cairo_array_index (&surface->dsc_header_comments, 0);
    for (i = 0; i < num_comments; i++) {
 _cairo_output_stream_printf (surface->final_stream,
         "%s\n", comments[i]);
 if (strncmp (comments[i], "%%BoundingBox:", 14) == 0)
     has_bbox = TRUE;

 free (comments[i]);
 comments[i] = NULL;
    }

    if (!has_bbox) {
 _cairo_output_stream_printf (surface->final_stream,
         "%%%%BoundingBox: %d %d %d %d\n",
         surface->document_bbox_p1.x,
         surface->document_bbox_p1.y,
         surface->document_bbox_p2.x,
         surface->document_bbox_p2.y);
    }

    _cairo_output_stream_printf (surface->final_stream,
     "%%%%EndComments\n");

    _cairo_output_stream_printf (surface->final_stream,
     "%%%%BeginProlog\n");

    if (surface->eps) {
 _cairo_output_stream_printf (surface->final_stream,
         "50 dict begin\n");
    } else {
 _cairo_output_stream_printf (surface->final_stream,
         "/languagelevel where\n"
         "{ pop languagelevel } { 1 } ifelse\n"
         "%d lt { /Helvetica findfont 12 scalefont setfont 50 500 moveto\n"
         "  (This print job requires a PostScript Language Level %d printer.) show\n"
         "  showpage quit } if\n",
         level,
         level);
    }

    _cairo_output_stream_printf (surface->final_stream,
     "/q { gsave } bind def\n"
     "/Q { grestore } bind def\n"
     "/cm { 6 array astore concat } bind def\n"
     "/w { setlinewidth } bind def\n"
     "/J { setlinecap } bind def\n"
     "/j { setlinejoin } bind def\n"
     "/M { setmiterlimit } bind def\n"
     "/d { setdash } bind def\n"
     "/m { moveto } bind def\n"
     "/l { lineto } bind def\n"
     "/c { curveto } bind def\n"
     "/h { closepath } bind def\n"
     "/re { exch dup neg 3 1 roll 5 3 roll moveto 0 rlineto\n"
     "      0 exch rlineto 0 rlineto closepath } bind def\n"
     "/S { stroke } bind def\n"
     "/f { fill } bind def\n"
     "/f* { eofill } bind def\n"
     "/n { newpath } bind def\n"
     "/W { clip } bind def\n"
     "/W* { eoclip } bind def\n"
     "/BT { } bind def\n"
     "/ET { } bind def\n"
     "/BDC { mark 3 1 roll /BDC pdfmark } bind def\n"
     "/EMC { mark /EMC pdfmark } bind def\n"
     "/cairo_store_point { /cairo_point_y exch def /cairo_point_x exch def } def\n"
     "/Tj { show currentpoint cairo_store_point } bind def\n"
     "/TJ {\n"
     "  {\n"
     "    dup\n"
     "    type /stringtype eq\n"
     "    { show } { -0.001 mul 0 cairo_font_matrix dtransform rmoveto } ifelse\n"
     "  } forall\n"
     "  currentpoint cairo_store_point\n"
     "} bind def\n"
     "/cairo_selectfont { cairo_font_matrix aload pop pop pop 0 0 6 array astore\n"
     "    cairo_font exch selectfont cairo_point_x cairo_point_y moveto } bind def\n"
     "/Tf { pop /cairo_font exch def /cairo_font_matrix where\n"
     "      { pop cairo_selectfont } if } bind def\n"
     "/Td { matrix translate cairo_font_matrix matrix concatmatrix dup\n"
     "      /cairo_font_matrix exch def dup 4 get exch 5 get cairo_store_point\n"
     "      /cairo_font where { pop cairo_selectfont } if } bind def\n"
     "/Tm { 2 copy 8 2 roll 6 array astore /cairo_font_matrix exch def\n"
     "      cairo_store_point /cairo_font where { pop cairo_selectfont } if } bind def\n"
     "/g { setgray } bind def\n"
     "/rg { setrgbcolor } bind def\n"
     "/d1 { setcachedevice } bind def\n"
     "/cairo_data_source {\n"
     "  CairoDataIndex CairoData length lt\n"
     "    { CairoData CairoDataIndex get /CairoDataIndex CairoDataIndex 1 add def }\n"
     "    { () } ifelse\n"
     "} def\n"
     "/cairo_flush_ascii85_file { cairo_ascii85_file status { cairo_ascii85_file flushfile } if } def\n"
     "/cairo_image { image cairo_flush_ascii85_file } def\n"
     "/cairo_imagemask { imagemask cairo_flush_ascii85_file } def\n");

    if (!surface->eps) {
 _cairo_output_stream_printf (surface->final_stream,
         "/cairo_set_page_size {\n"
         "  %% Change paper size, but only if different from previous paper size otherwise\n"
         "  %% duplex fails. PLRM specifies a tolerance of 5 pts when matching paper size\n"
         "  %% so we use the same when checking if the size changes.\n"
         "  /setpagedevice where {\n"
         "    pop currentpagedevice\n"
         "    /PageSize known {\n"
         "      2 copy\n"
         "      currentpagedevice /PageSize get aload pop\n"
         "      exch 4 1 roll\n"
         "      sub abs 5 gt\n"
         "      3 1 roll\n"
         "      sub abs 5 gt\n"
         "      or\n"
         "    } {\n"
         "      true\n"
         "    } ifelse\n"
         "    {\n"
         "      2 array astore\n"
         "      2 dict begin\n"
         "        /PageSize exch def\n"
         "        /ImagingBBox null def\n"
         "      currentdict end\n"
         "      setpagedevice\n"
         "    } {\n"
         "      pop pop\n"
         "    } ifelse\n"
         "  } {\n"
         "    pop\n"
         "  } ifelse\n"
         "} def\n");
    }
    if (surface->contains_eps) {
 _cairo_output_stream_printf (surface->final_stream,
         "/cairo_eps_begin {\n"
         "  /cairo_save_state save def\n"
         "  /dict_count countdictstack def\n"
         "  /op_count count 1 sub def\n"
         "  userdict begin\n"
         "  /showpage { } def\n"
         "  0 g 0 J 1 w 0 j 10 M [ ] 0 d n\n"
         "} bind def\n"
         "/cairo_eps_end {\n"
         "  count op_count sub { pop } repeat\n"
         "  countdictstack dict_count sub { end } repeat\n"
         "  cairo_save_state restore\n"
         "} bind def\n");
    }

    _cairo_output_stream_printf (surface->final_stream,
     "%%%%EndProlog\n");
}

static cairo_status_t
_cairo_ps_surface_emit_type1_font_subset (cairo_ps_surface_t  *surface,
       cairo_scaled_font_subset_t *font_subset)


{
    cairo_type1_subset_t subset;
    cairo_status_t status;
    int length;
    char name[64];

    snprintf (name, sizeof name, "f-%d-%d",
       font_subset->font_id, font_subset->subset_id);
    status = _cairo_type1_subset_init (&subset, name, font_subset, TRUE);
    if (unlikely (status))
 return status;

    /* FIXME: Figure out document structure convention for fonts */

#if DEBUG_PS
    _cairo_output_stream_printf (surface->final_stream,
     "%% _cairo_ps_surface_emit_type1_font_subset\n");
#endif

    _cairo_output_stream_printf (surface->final_stream,
     "%%%%BeginResource: font %s\n",
     subset.base_font);
    length = subset.header_length + subset.data_length + subset.trailer_length;
    _cairo_output_stream_write (surface->final_stream, subset.data, length);
    _cairo_output_stream_printf (surface->final_stream,
     "%%%%EndResource\n");

    _cairo_type1_subset_fini (&subset);

    return CAIRO_STATUS_SUCCESS;
}


static cairo_status_t
_cairo_ps_surface_emit_type1_font_fallback (cairo_ps_surface_t  *surface,
                                            cairo_scaled_font_subset_t *font_subset)
{
    cairo_type1_subset_t subset;
    cairo_status_t status;
    int length;
    char name[64];

    snprintf (name, sizeof name, "f-%d-%d",
       font_subset->font_id, font_subset->subset_id);
    status = _cairo_type1_fallback_init_hex (&subset, name, font_subset);
    if (unlikely (status))
 return status;

#if DEBUG_PS
    _cairo_output_stream_printf (surface->final_stream,
     "%% _cairo_ps_surface_emit_type1_font_fallback\n");
#endif

    _cairo_output_stream_printf (surface->final_stream,
     "%%%%BeginResource: font %s\n",
     subset.base_font);
    length = subset.header_length + subset.data_length + subset.trailer_length;
    _cairo_output_stream_write (surface->final_stream, subset.data, length);
    _cairo_output_stream_printf (surface->final_stream,
     "%%%%EndResource\n");

    _cairo_type1_fallback_fini (&subset);

    return CAIRO_STATUS_SUCCESS;
}

static cairo_status_t
_cairo_ps_surface_emit_truetype_font_subset (cairo_ps_surface_t  *surface,
          cairo_scaled_font_subset_t *font_subset)


{
    cairo_truetype_subset_t subset;
    cairo_status_t status;
    unsigned int i, begin, end;

    status = _cairo_truetype_subset_init_ps (&subset, font_subset);
    if (unlikely (status))
 return status;

    /* FIXME: Figure out document structure convention for fonts */

#if DEBUG_PS
    _cairo_output_stream_printf (surface->final_stream,
     "%% _cairo_ps_surface_emit_truetype_font_subset\n");
#endif

    _cairo_output_stream_printf (surface->final_stream,
     "%%%%BeginResource: font %s\n",
     subset.ps_name);
    _cairo_output_stream_printf (surface->final_stream,
     "11 dict begin\n"
     "/FontType 42 def\n"
     "/FontName /%s def\n"
     "/PaintType 0 def\n"
     "/FontMatrix [ 1 0 0 1 0 0 ] def\n"
     "/FontBBox [ 0 0 0 0 ] def\n"
     "/Encoding 256 array def\n"
     "0 1 255 { Encoding exch /.notdef put } for\n",
     subset.ps_name);

    /* FIXME: Figure out how subset->x_max etc maps to the /FontBBox */

    if (font_subset->is_latin) {
 for (i = 1; i < 256; i++) {
     if (font_subset->latin_to_subset_glyph_index[i] > 0) {
  if (font_subset->glyph_names != NULL) {
      _cairo_output_stream_printf (surface->final_stream,
       "Encoding %d /%s put\n",
       i, font_subset->glyph_names[font_subset->latin_to_subset_glyph_index[i]]);
  } else {
      _cairo_output_stream_printf (surface->final_stream,
       "Encoding %d /g%ld put\n", i, font_subset->latin_to_subset_glyph_index[i]);
  }
     }
 }
    } else {
 for (i = 1; i < font_subset->num_glyphs; i++) {
     if (font_subset->glyph_names != NULL) {
  _cairo_output_stream_printf (surface->final_stream,
          "Encoding %d /%s put\n",
          i, font_subset->glyph_names[i]);
     } else {
  _cairo_output_stream_printf (surface->final_stream,
          "Encoding %d /g%d put\n", i, i);
     }
 }
    }

    _cairo_output_stream_printf (surface->final_stream,
     "/CharStrings %d dict dup begin\n"
     "/.notdef 0 def\n",
     font_subset->num_glyphs);

    for (i = 1; i < font_subset->num_glyphs; i++) {
 if (font_subset->glyph_names != NULL) {
     _cairo_output_stream_printf (surface->final_stream,
      "/%s %d def\n",
      font_subset->glyph_names[i], i);
 } else {
     _cairo_output_stream_printf (surface->final_stream,
      "/g%d %d def\n", i, i);
 }
    }

    _cairo_output_stream_printf (surface->final_stream,
     "end readonly def\n");

    _cairo_output_stream_printf (surface->final_stream,
     "/sfnts [\n");
    begin = 0;
    end = 0;
    for (i = 0; i < subset.num_string_offsets; i++) {
        end = subset.string_offsets[i];
        _cairo_output_stream_printf (surface->final_stream,"<");
        _cairo_output_stream_write_hex_string (surface->final_stream,
                                               subset.data + begin, end - begin);
        _cairo_output_stream_printf (surface->final_stream,"00>\n");
        begin = end;
    }
    if (subset.data_length > end) {
        _cairo_output_stream_printf (surface->final_stream,"<");
        _cairo_output_stream_write_hex_string (surface->final_stream,
                                               subset.data + end, subset.data_length - end);
        _cairo_output_stream_printf (surface->final_stream,"00>\n");
    }

    _cairo_output_stream_printf (surface->final_stream,
     "] def\n"
     "/f-%d-%d currentdict end definefont pop\n",
     font_subset->font_id,
     font_subset->subset_id);
    _cairo_output_stream_printf (surface->final_stream,
     "%%%%EndResource\n");
    _cairo_truetype_subset_fini (&subset);


    return CAIRO_STATUS_SUCCESS;
}

static cairo_int_status_t
_cairo_ps_emit_imagemask (cairo_image_surface_t *image,
     cairo_output_stream_t *stream)
{
    uint8_t *row, *byte;
    int rows, cols;

    /* The only image type supported by Type 3 fonts are 1-bit image
     * masks */
    assert (image->format == CAIRO_FORMAT_A1);

    _cairo_output_stream_printf (stream,
     "<<\n"
     "   /ImageType 1\n"
     "   /Width %d\n"
     "   /Height %d\n"
     "   /ImageMatrix [%d 0 0 %d 0 %d]\n"
     "   /Decode [1 0]\n"
     "   /BitsPerComponent 1\n",
     image->width,
     image->height,
     image->width,
     -image->height,
     image->height);

    _cairo_output_stream_printf (stream,
     "   /DataSource {<\n   ");
    for (row = image->data, rows = image->height; rows; row += image->stride, rows--) {
 for (byte = row, cols = (image->width + 7) / 8; cols; byte++, cols--) {
     uint8_t output_byte = CAIRO_BITSWAP8_IF_LITTLE_ENDIAN (*byte);
     _cairo_output_stream_printf (stream, "%02x ", output_byte);
 }
 _cairo_output_stream_printf (stream, "\n   ");
    }
    _cairo_output_stream_printf (stream, ">}\n>>\n");

    _cairo_output_stream_printf (stream,
     "imagemask\n");

    return _cairo_output_stream_get_status (stream);
}

static cairo_status_t
_cairo_ps_surface_emit_type3_font_subset (cairo_ps_surface_t  *surface,
       cairo_scaled_font_subset_t *font_subset)


{
    cairo_status_t status;
    unsigned int i;
    cairo_box_t font_bbox = {{0,0},{0,0}};
    cairo_box_t bbox = {{0,0},{0,0}};
    cairo_surface_t *type3_surface;
    double width;

    if (font_subset->num_glyphs == 0)
 return CAIRO_STATUS_SUCCESS;

#if DEBUG_PS
    _cairo_output_stream_printf (surface->final_stream,
     "%% _cairo_ps_surface_emit_type3_font_subset\n");
#endif

    _cairo_output_stream_printf (surface->final_stream,
     "%%%%BeginResource: font\n");
    _cairo_output_stream_printf (surface->final_stream,
     "8 dict begin\n"
     "/FontType 3 def\n"
     "/FontMatrix [1 0 0 -1 0 0] def\n"
     "/Encoding 256 array def\n"
     "0 1 255 { Encoding exch /.notdef put } for\n");

    type3_surface = _cairo_type3_glyph_surface_create (font_subset->scaled_font,
             NULL,
             _cairo_ps_emit_imagemask,
             surface->font_subsets,
             TRUE);
    status = type3_surface->status;
    if (unlikely (status))
 return status;

    for (i = 0; i < font_subset->num_glyphs; i++) {
 if (font_subset->glyph_names != NULL) {
     _cairo_output_stream_printf (surface->final_stream,
      "Encoding %d /%s put\n",
      i, font_subset->glyph_names[i]);
 } else {
     _cairo_output_stream_printf (surface->final_stream,
      "Encoding %d /g%d put\n", i, i);
 }
    }

    _cairo_output_stream_printf (surface->final_stream,
     "/Glyphs [\n");

    for (i = 0; i < font_subset->num_glyphs; i++) {
 _cairo_output_stream_printf (surface->final_stream,
         "    { %% %d\n", i);
 status = _cairo_type3_glyph_surface_emit_glyph (type3_surface,
       surface->final_stream,
       font_subset->glyphs[i],
       &bbox,
       &width);
 if (unlikely (status))
     break;

 _cairo_output_stream_printf (surface->final_stream,
         "    }\n");
        if (i == 0) {
            font_bbox.p1.x = bbox.p1.x;
            font_bbox.p1.y = bbox.p1.y;
            font_bbox.p2.x = bbox.p2.x;
            font_bbox.p2.y = bbox.p2.y;
        } else {
            if (bbox.p1.x < font_bbox.p1.x)
                font_bbox.p1.x = bbox.p1.x;
            if (bbox.p1.y < font_bbox.p1.y)
                font_bbox.p1.y = bbox.p1.y;
            if (bbox.p2.x > font_bbox.p2.x)
                font_bbox.p2.x = bbox.p2.x;
            if (bbox.p2.y > font_bbox.p2.y)
                font_bbox.p2.y = bbox.p2.y;
        }
    }
    cairo_surface_finish (type3_surface);
    cairo_surface_destroy (type3_surface);
    if (unlikely (status))
 return status;

    _cairo_output_stream_printf (surface->final_stream,
     "] def\n"
     "/FontBBox [%f %f %f %f] def\n"
     "/BuildChar {\n"
     "  exch /Glyphs get\n"
     "  exch get\n"
     "  10 dict begin exec end\n"
     "} bind def\n"
     "currentdict\n"
     "end\n"
     "/f-%d-%d exch definefont pop\n",
     _cairo_fixed_to_double (font_bbox.p1.x),
     - _cairo_fixed_to_double (font_bbox.p2.y),
     _cairo_fixed_to_double (font_bbox.p2.x),
     - _cairo_fixed_to_double (font_bbox.p1.y),
     font_subset->font_id,
     font_subset->subset_id);
    _cairo_output_stream_printf (surface->final_stream,
     "%%%%EndResource\n");

    return CAIRO_STATUS_SUCCESS;
}

static cairo_int_status_t
_cairo_ps_surface_emit_unscaled_font_subset (cairo_scaled_font_subset_t *font_subset,
                void   *closure)
{
    cairo_ps_surface_t *surface = closure;
    cairo_int_status_t status;

    status = _cairo_scaled_font_subset_create_glyph_names (font_subset);
    if (_cairo_int_status_is_error (status))
 return status;

    status = _cairo_ps_surface_emit_type1_font_subset (surface, font_subset);
    if (status != CAIRO_INT_STATUS_UNSUPPORTED)
 return status;

    status = _cairo_ps_surface_emit_truetype_font_subset (surface, font_subset);
    if (status != CAIRO_INT_STATUS_UNSUPPORTED)
 return status;

    status = _cairo_ps_surface_emit_type1_font_fallback (surface, font_subset);
    if (status != CAIRO_INT_STATUS_UNSUPPORTED)
 return status;

    ASSERT_NOT_REACHED;
    return CAIRO_STATUS_SUCCESS;
}

static cairo_int_status_t
_cairo_ps_surface_emit_scaled_font_subset (cairo_scaled_font_subset_t *font_subset,
                                           void         *closure)
{
    cairo_ps_surface_t *surface = closure;
    cairo_int_status_t status;

    status = _cairo_scaled_font_subset_create_glyph_names (font_subset);
    if (_cairo_int_status_is_error (status))
 return status;

    status = _cairo_ps_surface_emit_type3_font_subset (surface, font_subset);
    if (status != CAIRO_INT_STATUS_UNSUPPORTED)
 return status;

    ASSERT_NOT_REACHED;
    return CAIRO_INT_STATUS_SUCCESS;
}

static cairo_status_t
_cairo_ps_surface_emit_font_subsets (cairo_ps_surface_t *surface)
{
    cairo_status_t status;

#if DEBUG_PS
    _cairo_output_stream_printf (surface->final_stream,
     "%% _cairo_ps_surface_emit_font_subsets\n");
#endif

    status = _cairo_scaled_font_subsets_foreach_unscaled (surface->font_subsets,
                                                          _cairo_ps_surface_emit_unscaled_font_subset,
                                                          surface);
    if (unlikely (status))
 return status;

    return _cairo_scaled_font_subsets_foreach_scaled (surface->font_subsets,
            _cairo_ps_surface_emit_scaled_font_subset,
            surface);
}

static cairo_int_status_t
_cairo_ps_surface_emit_forms (cairo_ps_surface_t *surface)
{
    _cairo_hash_table_foreach (surface->forms,
          _cairo_ps_form_emit,
          surface);
    return surface->base.status;
}

static cairo_status_t
_cairo_ps_surface_emit_body (cairo_ps_surface_t *surface)
{
    char    buf[4096];
    int     n;

    if (ferror (surface->tmpfile) != 0)
 return _cairo_error (CAIRO_STATUS_TEMP_FILE_ERROR);

    rewind (surface->tmpfile);
    while ((n = fread (buf, 1, sizeof (buf), surface->tmpfile)) > 0)
 _cairo_output_stream_write (surface->final_stream, buf, n);

    if (ferror (surface->tmpfile) != 0)
 return _cairo_error (CAIRO_STATUS_TEMP_FILE_ERROR);

    return CAIRO_STATUS_SUCCESS;
}

static void
_cairo_ps_surface_emit_footer (cairo_ps_surface_t *surface)
{
    _cairo_output_stream_printf (surface->final_stream,
     "%%%%Trailer\n");

    if (surface->eps) {
 _cairo_output_stream_printf (surface->final_stream,
         "end\n");
    }

    _cairo_output_stream_printf (surface->final_stream,
     "%%%%EOF\n");
}

static cairo_bool_t
_path_covers_bbox (cairo_ps_surface_t *surface,
     cairo_path_fixed_t *path)
{
    cairo_box_t box;

    if (_cairo_path_fixed_is_box (path, &box)) {
 cairo_rectangle_int_t rect;

 _cairo_box_round_to_rectangle (&box, &rect);

 /* skip trivial whole-page clips */
 if (_cairo_rectangle_intersect (&rect, &surface->surface_extents)) {
     if (rect.x == surface->surface_extents.x &&
  rect.width == surface->surface_extents.width &&
  rect.y == surface->surface_extents.y &&
  rect.height == surface->surface_extents.height)
     {
  return TRUE;
     }
 }
    }

    return FALSE;
}

static cairo_status_t
_cairo_ps_surface_clipper_intersect_clip_path (cairo_surface_clipper_t *clipper,
            cairo_path_fixed_t *path,
            cairo_fill_rule_t   fill_rule,
            double      tolerance,
            cairo_antialias_t   antialias)
{
    cairo_ps_surface_t *surface = cairo_container_of (clipper,
            cairo_ps_surface_t,
            clipper);
    cairo_output_stream_t *stream = surface->stream;
    cairo_status_t status;

    assert (surface->paginated_mode != CAIRO_PAGINATED_MODE_ANALYZE);

#if DEBUG_PS
    _cairo_output_stream_printf (stream,
     "%% _cairo_ps_surface_intersect_clip_path\n");
#endif

    if (path == NULL) {
 status = _cairo_pdf_operators_flush (&surface->pdf_operators);
 if (unlikely (status))
     return status;

 _cairo_output_stream_printf (stream, "Q q\n");

 surface->current_pattern_is_solid_color = FALSE;
 _cairo_pdf_operators_reset (&surface->pdf_operators);

 return CAIRO_STATUS_SUCCESS;
    }

    if (_path_covers_bbox (surface, path))
 return CAIRO_STATUS_SUCCESS;

    return _cairo_pdf_operators_clip (&surface->pdf_operators,
          path,
          fill_rule);
}

/* PLRM specifies a tolerance of 5 points when matching page sizes */
static cairo_bool_t
_ps_page_dimension_equal (int a, int b)
{
    return (abs (a - b) < 5);
}

static const char *
_cairo_ps_surface_get_page_media (cairo_ps_surface_t     *surface)
{
    int width, height, i;
    char buf[50];
    cairo_page_media_t *page;
    const char *page_name;

    width = _cairo_lround (surface->width);
    height = _cairo_lround (surface->height);

    /* search previously used page sizes */
    cairo_list_foreach_entry (page, cairo_page_media_t, &surface->document_media, link) {
 if (_ps_page_dimension_equal (width, page->width) &&
     _ps_page_dimension_equal (height, page->height))
     return page->name;
    }

    /* search list of standard page sizes */
    page_name = NULL;
    for (i = 0; i < ARRAY_LENGTH (_cairo_page_standard_media); i++) {
 if (_ps_page_dimension_equal (width, _cairo_page_standard_media[i].width) &&
     _ps_page_dimension_equal (height, _cairo_page_standard_media[i].height))
 {
     page_name = _cairo_page_standard_media[i].name;
     width = _cairo_page_standard_media[i].width;
     height = _cairo_page_standard_media[i].height;
     break;
 }
    }

    page = _cairo_malloc (sizeof (cairo_page_media_t));
    if (unlikely (page == NULL)) {
 _cairo_error_throw (CAIRO_STATUS_NO_MEMORY);
 return NULL;
    }

    if (page_name) {
 page->name = strdup (page_name);
    } else {
 snprintf (buf, sizeof (buf), "%dx%dmm",
    (int) _cairo_lround (surface->width * 25.4/72),
    (int) _cairo_lround (surface->height * 25.4/72));
 page->name = strdup (buf);
    }

    if (unlikely (page->name == NULL)) {
 free (page);
 _cairo_error_throw (CAIRO_STATUS_NO_MEMORY);
 return NULL;
    }

    page->width = width;
    page->height = height;
    cairo_list_add_tail (&page->link, &surface->document_media);

    return page->name;
}

static cairo_surface_t *
_cairo_ps_surface_create_for_stream_internal (cairo_output_stream_t *stream,
           double       width,
           double       height)
{
    cairo_status_t status, status_ignored;
    cairo_ps_surface_t *surface;

    surface = _cairo_malloc (sizeof (cairo_ps_surface_t));
    if (unlikely (surface == NULL)) {
 status = _cairo_error (CAIRO_STATUS_NO_MEMORY);
 goto CLEANUP;
    }

    _cairo_surface_init (&surface->base,
    &cairo_ps_surface_backend,
    NULL, /* device */
    CAIRO_CONTENT_COLOR_ALPHA,
    TRUE); /* is_vector */

    surface->final_stream = stream;

    surface->tmpfile = tmpfile ();
    if (surface->tmpfile == NULL) {
 switch (errno) {
 case ENOMEM:
     status = _cairo_error (CAIRO_STATUS_NO_MEMORY);
     break;
 default:
     status = _cairo_error (CAIRO_STATUS_TEMP_FILE_ERROR);
     break;
 }
 goto CLEANUP_SURFACE;
    }

    surface->stream = _cairo_output_stream_create_for_file (surface->tmpfile);
    status = _cairo_output_stream_get_status (surface->stream);
    if (unlikely (status))
 goto CLEANUP_OUTPUT_STREAM;

    surface->font_subsets = _cairo_scaled_font_subsets_create_simple ();
    if (unlikely (surface->font_subsets == NULL)) {
 status = _cairo_error (CAIRO_STATUS_NO_MEMORY);
 goto CLEANUP_OUTPUT_STREAM;
    }

    _cairo_scaled_font_subsets_enable_latin_subset (surface->font_subsets, TRUE);
    surface->has_creation_date = FALSE;
    surface->eps = FALSE;
    surface->ps_level = CAIRO_PS_LEVEL_3;
    surface->ps_level_used = CAIRO_PS_LEVEL_2;
    surface->width  = width;
    surface->height = height;
    cairo_matrix_init (&surface->cairo_to_ps, 1, 0, 0, 1, 0, 0);
    surface->surface_extents.x = 0;
    surface->surface_extents.y = 0;
    surface->surface_extents.width  = ceil (surface->width);
    surface->surface_extents.height = ceil (surface->height);
    surface->surface_bounded = TRUE;
    surface->paginated_mode = CAIRO_PAGINATED_MODE_ANALYZE;
    surface->force_fallbacks = FALSE;
    surface->content = CAIRO_CONTENT_COLOR_ALPHA;
    surface->current_pattern_is_solid_color = FALSE;
    surface->document_bbox_p1.x = 0;
    surface->document_bbox_p1.y = 0;
    surface->document_bbox_p2.x = 0;
    surface->document_bbox_p2.y = 0;
    surface->total_form_size = 0;
    surface->contains_eps = FALSE;
    surface->paint_proc = FALSE;

    _cairo_surface_clipper_init (&surface->clipper,
     _cairo_ps_surface_clipper_intersect_clip_path);

    _cairo_pdf_operators_init (&surface->pdf_operators,
          surface->stream,
          &surface->cairo_to_ps,
          surface->font_subsets,
          TRUE);
    surface->num_pages = 0;

    cairo_list_init (&surface->document_media);
    _cairo_array_init (&surface->dsc_header_comments, sizeof (char *));
    _cairo_array_init (&surface->dsc_setup_comments, sizeof (char *));
    _cairo_array_init (&surface->dsc_page_setup_comments, sizeof (char *));
    _cairo_array_init (&surface->recording_surf_stack, sizeof (unsigned int));

    surface->num_forms = 0;
    surface->forms = _cairo_hash_table_create (_cairo_ps_form_equal);
    if (unlikely (surface->forms == NULL)) {
 status = _cairo_error (CAIRO_STATUS_NO_MEMORY);
 goto CLEANUP_FONT_SUBSETS;
    }

    surface->dsc_comment_target = &surface->dsc_header_comments;

    surface->paginated_surface = _cairo_paginated_surface_create (
                                    &surface->base,
        CAIRO_CONTENT_COLOR_ALPHA,
        &cairo_ps_surface_paginated_backend);
    status = surface->paginated_surface->status;
    if (status == CAIRO_STATUS_SUCCESS) {
 /* paginated keeps the only reference to surface now, drop ours */
 cairo_surface_destroy (&surface->base);
 return surface->paginated_surface;
    }

 CLEANUP_FONT_SUBSETS:
    _cairo_scaled_font_subsets_destroy (surface->font_subsets);
 CLEANUP_OUTPUT_STREAM:
    status_ignored = _cairo_output_stream_destroy (surface->stream);
    fclose (surface->tmpfile);
 CLEANUP_SURFACE:
    free (surface);
 CLEANUP:
    /* destroy stream on behalf of caller */
    status_ignored = _cairo_output_stream_destroy (stream);

    return _cairo_surface_create_in_error (status);
}

/**
 * cairo_ps_surface_create:
 * @filename: a filename for the PS output (must be writable), %NULL may be
 *            used to specify no output. This will generate a PS surface that
 *            may be queried and used as a source, without generating a
 *            temporary file.
 * @width_in_points: width of the surface, in points (1 point == 1/72.0 inch)
 * @height_in_points: height of the surface, in points (1 point == 1/72.0 inch)
 *
 * Creates a PostScript surface of the specified size in points to be
 * written to @filename. See cairo_ps_surface_create_for_stream() for
 * a more flexible mechanism for handling the PostScript output than
 * simply writing it to a named file.
 *
 * Note that the size of individual pages of the PostScript output can
 * vary. See cairo_ps_surface_set_size().
 *
 * Return value: a pointer to the newly created surface. The caller
 * owns the surface and should call cairo_surface_destroy() when done
 * with it.
 *
 * This function always returns a valid pointer, but it will return a
 * pointer to a "nil" surface if an error such as out of memory
 * occurs. You can use cairo_surface_status() to check for this.
 *
 * Since: 1.2
 **/
cairo_surface_t *
cairo_ps_surface_create (const char  *filename,
    double    width_in_points,
    double    height_in_points)
{
    cairo_output_stream_t *stream;

    stream = _cairo_output_stream_create_for_filename (filename);
    if (_cairo_output_stream_get_status (stream))
 return _cairo_surface_create_in_error (_cairo_output_stream_destroy (stream));

    return _cairo_ps_surface_create_for_stream_internal (stream,
        width_in_points,
        height_in_points);
}

/**
 * cairo_ps_surface_create_for_stream:
 * @write_func: a #cairo_write_func_t to accept the output data, may be %NULL
 *              to indicate a no-op @write_func. With a no-op @write_func,
 *              the surface may be queried or used as a source without
 *              generating any temporary files.
 * @closure: the closure argument for @write_func
 * @width_in_points: width of the surface, in points (1 point == 1/72.0 inch)
 * @height_in_points: height of the surface, in points (1 point == 1/72.0 inch)
 *
 * Creates a PostScript surface of the specified size in points to be
 * written incrementally to the stream represented by @write_func and
 * @closure. See cairo_ps_surface_create() for a more convenient way
 * to simply direct the PostScript output to a named file.
 *
 * Note that the size of individual pages of the PostScript
 * output can vary. See cairo_ps_surface_set_size().
 *
 * Return value: a pointer to the newly created surface. The caller
 * owns the surface and should call cairo_surface_destroy() when done
 * with it.
 *
 * This function always returns a valid pointer, but it will return a
 * pointer to a "nil" surface if an error such as out of memory
 * occurs. You can use cairo_surface_status() to check for this.
 *
 * Since: 1.2
 **/
cairo_surface_t *
cairo_ps_surface_create_for_stream (cairo_write_func_t write_func,
        void        *closure,
        double  width_in_points,
        double  height_in_points)
{
    cairo_output_stream_t *stream;

    stream = _cairo_output_stream_create (write_func, NULL, closure);
    if (_cairo_output_stream_get_status (stream))
 return _cairo_surface_create_in_error (_cairo_output_stream_destroy (stream));

    return _cairo_ps_surface_create_for_stream_internal (stream,
        width_in_points,
        height_in_points);
}

static cairo_bool_t
_cairo_surface_is_ps (cairo_surface_t *surface)
{
    return surface->backend == &cairo_ps_surface_backend;
}

/* If the abstract_surface is a paginated surface, and that paginated
 * surface's target is a ps_surface, then set ps_surface to that
 * target. Otherwise return FALSE.
 */
static cairo_bool_t
_extract_ps_surface (cairo_surface_t  *surface,
                     cairo_bool_t         set_error_on_failure,
       cairo_ps_surface_t **ps_surface)
{
    cairo_surface_t *target;

    if (surface->status)
 return FALSE;
    if (surface->finished) {
        if (set_error_on_failure)
     _cairo_surface_set_error (surface,
          _cairo_error (CAIRO_STATUS_SURFACE_FINISHED));
 return FALSE;
    }

    if (! _cairo_surface_is_paginated (surface)) {
        if (set_error_on_failure)
     _cairo_surface_set_error (surface,
          _cairo_error (CAIRO_STATUS_SURFACE_TYPE_MISMATCH));
 return FALSE;
    }

    target = _cairo_paginated_surface_get_target (surface);
    if (target->status) {
        if (set_error_on_failure)
     _cairo_surface_set_error (surface, target->status);
 return FALSE;
    }
    if (target->finished) {
        if (set_error_on_failure)
     _cairo_surface_set_error (surface,
          _cairo_error (CAIRO_STATUS_SURFACE_FINISHED));
 return FALSE;
    }

    if (! _cairo_surface_is_ps (target)) {
        if (set_error_on_failure)
     _cairo_surface_set_error (surface,
          _cairo_error (CAIRO_STATUS_SURFACE_TYPE_MISMATCH));
 return FALSE;
    }

    *ps_surface = (cairo_ps_surface_t *) target;
    return TRUE;
}

/**
 * cairo_ps_surface_restrict_to_level:
 * @surface: a PostScript #cairo_surface_t
 * @level: PostScript level
 *
 * Restricts the generated PostSript file to @level. See
 * cairo_ps_get_levels() for a list of available level values that
 * can be used here.
 *
 * This function should only be called before any drawing operations
 * have been performed on the given surface. The simplest way to do
 * this is to call this function immediately after creating the
 * surface.
 *
 * Since: 1.6
 **/
void
cairo_ps_surface_restrict_to_level (cairo_surface_t  *surface,
                                    cairo_ps_level_t  level)
{
    cairo_ps_surface_t *ps_surface = NULL;

    if (! _extract_ps_surface (surface, TRUE, &ps_surface))
 return;

    if (level < CAIRO_PS_LEVEL_LAST)
 ps_surface->ps_level = level;
}

/**
 * cairo_ps_get_levels:
 * @levels: supported level list
 * @num_levels: list length
 *
 * Used to retrieve the list of supported levels. See
 * cairo_ps_surface_restrict_to_level().
 *
 * Since: 1.6
 **/
void
cairo_ps_get_levels (cairo_ps_level_t const **levels,
                     int                       *num_levels)
{
    if (levels != NULL)
 *levels = _cairo_ps_levels;

    if (num_levels != NULL)
 *num_levels = CAIRO_PS_LEVEL_LAST;
}

/**
 * cairo_ps_level_to_string:
 * @level: a level id
 *
 * Get the string representation of the given @level id. This function
 * will return %NULL if @level id isn't valid. See cairo_ps_get_levels()
 * for a way to get the list of valid level ids.
 *
 * Return value: the string associated to given level.
 *
 * Since: 1.6
 **/
const char *
cairo_ps_level_to_string (cairo_ps_level_t level)
{
    if (level >= CAIRO_PS_LEVEL_LAST)
 return NULL;

    return _cairo_ps_level_strings[level];
}

/**
 * cairo_ps_surface_set_eps:
 * @surface: a PostScript #cairo_surface_t
 * @eps: %TRUE to output EPS format PostScript
 *
 * If @eps is %TRUE, the PostScript surface will output Encapsulated
 * PostScript.
 *
 * This function should only be called before any drawing operations
 * have been performed on the current page. The simplest way to do
 * this is to call this function immediately after creating the
 * surface. An Encapsulated PostScript file should never contain more
 * than one page.
 *
 * Since: 1.6
 **/
void
cairo_ps_surface_set_eps (cairo_surface_t *surface,
     cairo_bool_t           eps)
{
    cairo_ps_surface_t *ps_surface = NULL;

    if (! _extract_ps_surface (surface, TRUE, &ps_surface))
 return;

    ps_surface->eps = eps;
}

/**
 * cairo_ps_surface_get_eps:
 * @surface: a PostScript #cairo_surface_t
 *
 * Check whether the PostScript surface will output Encapsulated PostScript.
 *
 * Return value: %TRUE if the surface will output Encapsulated PostScript.
 *
 * Since: 1.6
 **/
cairo_public cairo_bool_t
cairo_ps_surface_get_eps (cairo_surface_t *surface)
{
    cairo_ps_surface_t *ps_surface = NULL;

    if (! _extract_ps_surface (surface, FALSE, &ps_surface))
 return FALSE;

    return ps_surface->eps;
}

/**
 * cairo_ps_surface_set_size:
 * @surface: a PostScript #cairo_surface_t
 * @width_in_points: new surface width, in points (1 point == 1/72.0 inch)
 * @height_in_points: new surface height, in points (1 point == 1/72.0 inch)
 *
 * Changes the size of a PostScript surface for the current (and
 * subsequent) pages.
 *
 * This function should only be called before any drawing operations
 * have been performed on the current page. The simplest way to do
 * this is to call this function immediately after creating the
 * surface or immediately after completing a page with either
 * cairo_show_page() or cairo_copy_page().
 *
 * Since: 1.2
 **/
void
cairo_ps_surface_set_size (cairo_surface_t *surface,
      double   width_in_points,
      double   height_in_points)
{
    cairo_ps_surface_t *ps_surface = NULL;
    cairo_status_t status;

    if (! _extract_ps_surface (surface, TRUE, &ps_surface))
 return;

    ps_surface->width = width_in_points;
    ps_surface->height = height_in_points;
    cairo_matrix_init (&ps_surface->cairo_to_ps, 1, 0, 0, 1, 0, 0);
    ps_surface->surface_extents.x = 0;
    ps_surface->surface_extents.y = 0;
    ps_surface->surface_extents.width  = ceil (ps_surface->width);
    ps_surface->surface_extents.height = ceil (ps_surface->height);
    _cairo_pdf_operators_set_cairo_to_pdf_matrix (&ps_surface->pdf_operators,
        &ps_surface->cairo_to_ps);
    status = _cairo_paginated_surface_set_size (ps_surface->paginated_surface,
      width_in_points,
      height_in_points);
    if (status)
 status = _cairo_surface_set_error (surface, status);
}

/**
 * cairo_ps_surface_dsc_comment:
 * @surface: a PostScript #cairo_surface_t
 * @comment: a comment string to be emitted into the PostScript output
 *
 * Emit a comment into the PostScript output for the given surface.
 *
 * The comment is expected to conform to the PostScript Language
 * Document Structuring Conventions (DSC). Please see that manual for
 * details on the available comments and their meanings. In
 * particular, the \%\%IncludeFeature comment allows a
 * device-independent means of controlling printer device features. So
 * the PostScript Printer Description Files Specification will also be
 * a useful reference.
 *
 * The comment string must begin with a percent character (\%) and the
 * total length of the string (including any initial percent
 * characters) must not exceed 255 characters. Violating either of
 * these conditions will place @surface into an error state. But
 * beyond these two conditions, this function will not enforce
 * conformance of the comment with any particular specification.
 *
 * The comment string must not contain any newline characters.
 *
 * The DSC specifies different sections in which particular comments
 * can appear. This function provides for comments to be emitted
 * within three sections: the header, the Setup section, and the
 * PageSetup section.  Comments appearing in the first two sections
 * apply to the entire document while comments in the BeginPageSetup
 * section apply only to a single page.
 *
 * For comments to appear in the header section, this function should
 * be called after the surface is created, but before a call to
 * cairo_ps_surface_dsc_begin_setup().
 *
 * For comments to appear in the Setup section, this function should
 * be called after a call to cairo_ps_surface_dsc_begin_setup() but
 * before a call to cairo_ps_surface_dsc_begin_page_setup().
 *
 * For comments to appear in the PageSetup section, this function
 * should be called after a call to
 * cairo_ps_surface_dsc_begin_page_setup().
 *
 * Note that it is only necessary to call
 * cairo_ps_surface_dsc_begin_page_setup() for the first page of any
 * surface. After a call to cairo_show_page() or cairo_copy_page()
 * comments are unambiguously directed to the PageSetup section of the
 * current page. But it doesn't hurt to call this function at the
 * beginning of every page as that consistency may make the calling
 * code simpler.
 *
 * As a final note, cairo automatically generates several comments on
 * its own. As such, applications must not manually generate any of
 * the following comments:
 *
 * Header section: \%!PS-Adobe-3.0, \%\%Creator, \%\%CreationDate, \%\%Pages,
 * \%\%BoundingBox, \%\%DocumentData, \%\%LanguageLevel, \%\%EndComments.
 *
 * Setup section: \%\%BeginSetup, \%\%EndSetup
 *
 * PageSetup section: \%\%BeginPageSetup, \%\%PageBoundingBox, \%\%EndPageSetup.
 *
 * Other sections: \%\%BeginProlog, \%\%EndProlog, \%\%Page, \%\%Trailer, \%\%EOF
 *
 * Here is an example sequence showing how this function might be used:
 *
 * <informalexample><programlisting>
 * cairo_surface_t *surface = cairo_ps_surface_create (filename, width, height);
 * ...
 * cairo_ps_surface_dsc_comment (surface, "%%Title: My excellent document");
 * cairo_ps_surface_dsc_comment (surface, "%%Copyright: Copyright (C) 2006 Cairo Lover")
 * ...
 * cairo_ps_surface_dsc_begin_setup (surface);
 * cairo_ps_surface_dsc_comment (surface, "%%IncludeFeature: *MediaColor White");
 * ...
 * cairo_ps_surface_dsc_begin_page_setup (surface);
 * cairo_ps_surface_dsc_comment (surface, "%%IncludeFeature: *PageSize A3");
 * cairo_ps_surface_dsc_comment (surface, "%%IncludeFeature: *InputSlot LargeCapacity");
 * cairo_ps_surface_dsc_comment (surface, "%%IncludeFeature: *MediaType Glossy");
 * cairo_ps_surface_dsc_comment (surface, "%%IncludeFeature: *MediaColor Blue");
 * ... draw to first page here ..
 * cairo_show_page (cr);
 * ...
 * cairo_ps_surface_dsc_comment (surface, "%%IncludeFeature: *PageSize A5");
 * ...
 * </programlisting></informalexample>
 *
 * Since: 1.2
 **/
void
cairo_ps_surface_dsc_comment (cairo_surface_t *surface,
         const char *comment)
{
    cairo_ps_surface_t *ps_surface = NULL;
    cairo_status_t status;
    char *comment_copy;

    if (! _extract_ps_surface (surface, TRUE, &ps_surface))
 return;

    /* A couple of sanity checks on the comment value. */
    if (comment == NULL) {
 status = _cairo_surface_set_error (surface, CAIRO_STATUS_NULL_POINTER);
 return;
    }

    if (comment[0] != '%' || strlen (comment) > 255) {
 status = _cairo_surface_set_error (surface, CAIRO_STATUS_INVALID_DSC_COMMENT);
 return;
    }

    /* Then, copy the comment and store it in the appropriate array. */
    comment_copy = strdup (comment);
    if (unlikely (comment_copy == NULL)) {
 status = _cairo_surface_set_error (surface, CAIRO_STATUS_NO_MEMORY);
 return;
    }

    status = _cairo_array_append (ps_surface->dsc_comment_target, &comment_copy);
    if (unlikely (status)) {
 free (comment_copy);
 status = _cairo_surface_set_error (surface, status);
 return;
    }
}

/**
 * cairo_ps_surface_dsc_begin_setup:
 * @surface: a PostScript #cairo_surface_t
 *
 * This function indicates that subsequent calls to
 * cairo_ps_surface_dsc_comment() should direct comments to the Setup
 * section of the PostScript output.
 *
 * This function should be called at most once per surface, and must
 * be called before any call to cairo_ps_surface_dsc_begin_page_setup()
 * and before any drawing is performed to the surface.
 *
 * See cairo_ps_surface_dsc_comment() for more details.
 *
 * Since: 1.2
 **/
void
cairo_ps_surface_dsc_begin_setup (cairo_surface_t *surface)
{
    cairo_ps_surface_t *ps_surface = NULL;

    if (! _extract_ps_surface (surface, TRUE, &ps_surface))
 return;

    if (ps_surface->dsc_comment_target == &ps_surface->dsc_header_comments)
 ps_surface->dsc_comment_target = &ps_surface->dsc_setup_comments;
}

/**
 * cairo_ps_surface_dsc_begin_page_setup:
 * @surface: a PostScript #cairo_surface_t
 *
 * This function indicates that subsequent calls to
 * cairo_ps_surface_dsc_comment() should direct comments to the
 * PageSetup section of the PostScript output.
 *
 * This function call is only needed for the first page of a
 * surface. It should be called after any call to
 * cairo_ps_surface_dsc_begin_setup() and before any drawing is
 * performed to the surface.
 *
 * See cairo_ps_surface_dsc_comment() for more details.
 *
 * Since: 1.2
 **/
void
cairo_ps_surface_dsc_begin_page_setup (cairo_surface_t *surface)
{
    cairo_ps_surface_t *ps_surface = NULL;

    if (! _extract_ps_surface (surface, TRUE, &ps_surface))
 return;

    if (ps_surface->dsc_comment_target == &ps_surface->dsc_header_comments ||
 ps_surface->dsc_comment_target == &ps_surface->dsc_setup_comments)
    {
 ps_surface->dsc_comment_target = &ps_surface->dsc_page_setup_comments;
    }
}

static cairo_status_t
_cairo_ps_surface_finish (void *abstract_surface)
{
    cairo_status_t status, status2;
    cairo_ps_surface_t *surface = abstract_surface;
    int i, num_comments;
    char **comments;

    status = surface->base.status;
    if (unlikely (status))
 goto CLEANUP;

    _cairo_ps_surface_emit_header (surface);

    _cairo_output_stream_printf (surface->final_stream,
     "%%%%BeginSetup\n");

    num_comments = _cairo_array_num_elements (&surface->dsc_setup_comments);
    if (num_comments) {
 comments = _cairo_array_index (&surface->dsc_setup_comments, 0);
 for (i = 0; i < num_comments; i++) {
     _cairo_output_stream_printf (surface->final_stream,
      "%s\n", comments[i]);
     free (comments[i]);
     comments[i] = NULL;
 }
    }

    status = _cairo_ps_surface_emit_font_subsets (surface);
    if (unlikely (status))
 goto CLEANUP;

    status = _cairo_ps_surface_emit_forms (surface);
    if (unlikely (status))
 goto CLEANUP;

    _cairo_output_stream_printf (surface->final_stream,
     "%%%%EndSetup\n");

    status = _cairo_ps_surface_emit_body (surface);
    if (unlikely (status))
 goto CLEANUP;

    _cairo_ps_surface_emit_footer (surface);

CLEANUP:
    _cairo_hash_table_foreach (surface->forms,
          _cairo_ps_form_pluck,
          surface->forms);
    _cairo_hash_table_destroy (surface->forms);
    _cairo_scaled_font_subsets_destroy (surface->font_subsets);

    status2 = _cairo_output_stream_destroy (surface->stream);
    if (status == CAIRO_STATUS_SUCCESS)
 status = status2;

    fclose (surface->tmpfile);

    status2 = _cairo_output_stream_destroy (surface->final_stream);
    if (status == CAIRO_STATUS_SUCCESS)
 status = status2;

    while (! cairo_list_is_empty (&surface->document_media)) {
        cairo_page_media_t *page;

        page = cairo_list_first_entry (&surface->document_media,
                                       cairo_page_media_t,
                                       link);
        cairo_list_del (&page->link);
 free (page->name);
 free (page);
    }

    num_comments = _cairo_array_num_elements (&surface->dsc_header_comments);
    comments = _cairo_array_index (&surface->dsc_header_comments, 0);
    for (i = 0; i < num_comments; i++)
 free (comments[i]);
    _cairo_array_fini (&surface->dsc_header_comments);

    num_comments = _cairo_array_num_elements (&surface->dsc_setup_comments);
    comments = _cairo_array_index (&surface->dsc_setup_comments, 0);
    for (i = 0; i < num_comments; i++)
 free (comments[i]);
    _cairo_array_fini (&surface->dsc_setup_comments);

    num_comments = _cairo_array_num_elements (&surface->dsc_page_setup_comments);
    comments = _cairo_array_index (&surface->dsc_page_setup_comments, 0);
    for (i = 0; i < num_comments; i++)
 free (comments[i]);
    _cairo_array_fini (&surface->dsc_page_setup_comments);

    _cairo_array_fini (&surface->recording_surf_stack);

    _cairo_surface_clipper_reset (&surface->clipper);

    return status;
}

static cairo_int_status_t
_cairo_ps_surface_start_page (void *abstract_surface)
{
    cairo_ps_surface_t *surface = abstract_surface;

    /* Increment before print so page numbers start at 1. */
    surface->num_pages++;

    return CAIRO_STATUS_SUCCESS;
}

static cairo_int_status_t
_cairo_ps_surface_show_page (void *abstract_surface)
{
    cairo_ps_surface_t *surface = abstract_surface;
    cairo_int_status_t status;

    if (surface->clipper.clip != NULL)
 _cairo_surface_clipper_reset (&surface->clipper);

    status = _cairo_pdf_operators_flush (&surface->pdf_operators);
    if (unlikely (status))
 return status;

    _cairo_output_stream_printf (surface->stream,
     "Q Q\n"
     "showpage\n");

    return CAIRO_STATUS_SUCCESS;
}

static cairo_bool_t
color_is_gray (double red, double green, double blue)
{
    const double epsilon = 0.00001;

    return (fabs (red - green) < epsilon &&
     fabs (red - blue) < epsilon);
}

/**
 * _cairo_ps_surface_acquire_source_surface_from_pattern:
 * @surface: [in] the ps surface
 * @pattern: [in] A #cairo_pattern_t of type SURFACE or RASTER_SOURCE to use
 *                as the source
 * @extents: [in] extents of the operation that is using this source
 * @src_surface_extents: [out] return source surface extents
 * @src_surface_bounded: [out] return TRUE if source surface is bounded
 * @src_op_extents: [out] return operation extents in source space
 * @source_surface: [out] returns surface of type image surface or recording surface
 * @x_offset: [out] return x offset of surface
 * @y_offset: [out] return y offset of surface
 *
 * Acquire source surface or raster source pattern.
 **/
static cairo_status_t
_cairo_ps_surface_acquire_source_surface_from_pattern (
    cairo_ps_surface_t           *surface,
    const cairo_pattern_t        *pattern,
    const cairo_rectangle_int_t  *extents,
    cairo_rectangle_int_t        *src_surface_extents,
    cairo_bool_t                 *src_surface_bounded,
    cairo_rectangle_int_t        *src_op_extents,
    cairo_surface_t             **source_surface,
    double                       *x_offset,
    double                       *y_offset)
{
    cairo_status_t status;
    cairo_box_t bbox;

    *x_offset = 0;
    *y_offset = 0;

    /* get the operation extents in pattern space */
    _cairo_box_from_rectangle (&bbox, extents);
    _cairo_matrix_transform_bounding_box_fixed (&pattern->matrix, &bbox, NULL);
    _cairo_box_round_to_rectangle (&bbox, src_op_extents);

    if (pattern->type == CAIRO_PATTERN_TYPE_RASTER_SOURCE) {
 cairo_surface_t *surf;

 surf = _cairo_raster_source_pattern_acquire (pattern, &surface->base, src_op_extents);
 if (!surf)
     return CAIRO_INT_STATUS_UNSUPPORTED;

 *src_surface_bounded = _cairo_surface_get_extents (surf, src_surface_extents);
 cairo_surface_get_device_offset (surf, x_offset, y_offset);
 *source_surface = surf;
    } else if (pattern->type == CAIRO_PATTERN_TYPE_SURFACE) {
 cairo_surface_t *surf = NULL;

 *source_surface = ((cairo_surface_pattern_t *) pattern)->surface;
 surf = *source_surface;
 *src_surface_bounded = _cairo_surface_get_extents (surf, src_surface_extents);
 if (surf->type == CAIRO_SURFACE_TYPE_RECORDING) {
     if (_cairo_surface_is_snapshot (surf))
  surf = _cairo_surface_snapshot_get_target (surf);

     if (surf->backend->type == CAIRO_SURFACE_TYPE_SUBSURFACE) {
  cairo_surface_subsurface_t *sub = (cairo_surface_subsurface_t *) surf;

  *src_surface_extents = sub->extents;
  *src_surface_bounded = TRUE;
  *x_offset = -sub->extents.x;
  *y_offset = -sub->extents.y;
     }

     cairo_surface_destroy (surf);
 } else if (surf->type != CAIRO_SURFACE_TYPE_IMAGE) {
     cairo_image_surface_t *image;
     void *image_extra;

     status = _cairo_surface_acquire_source_image (surf, &image, &image_extra);
     if (unlikely (status))
  return status;

     *src_surface_bounded = _cairo_surface_get_extents (&image->base, src_surface_extents);
     _cairo_surface_release_source_image (surf, image, image_extra);
 }
    } else {
 ASSERT_NOT_REACHED;
    }

    return CAIRO_STATUS_SUCCESS;
}

static void
_cairo_ps_surface_release_source_surface_from_pattern (cairo_ps_surface_t           *surface,
             const cairo_pattern_t        *pattern,
             cairo_surface_t              *source_surface)
{
    if  (pattern->type == CAIRO_PATTERN_TYPE_RASTER_SOURCE)
 _cairo_raster_source_pattern_release (pattern, source_surface);
}

/**
 * _cairo_ps_surface_create_padded_image_from_image:
 * @surface: the ps surface
 * @source: The source image
 * @extents: extents of the operation that is using this source
 * @image: returns the padded image or NULL if padding not required to fill @extents
 * @image_extents: returns extents of padded image. These extents in are in source image space.
 *
 * Creates a padded image if the source image does not fill the extents.
 **/
static cairo_status_t
_cairo_ps_surface_create_padded_image_from_image (cairo_ps_surface_t           *surface,
        cairo_image_surface_t        *source,
        const cairo_matrix_t         *source_matrix,
        const cairo_rectangle_int_t  *extents,
        cairo_image_surface_t       **image,
        cairo_rectangle_int_t        *image_extents)
{
    cairo_box_t box;
    cairo_rectangle_int_t rect;
    cairo_surface_t    *pad_image;
    cairo_surface_pattern_t pad_pattern;
    int w, h;
    cairo_int_status_t      status;

    /* get the operation extents in pattern space */
    _cairo_box_from_rectangle (&box, extents);
    _cairo_matrix_transform_bounding_box_fixed (source_matrix, &box, NULL);
    _cairo_box_round_to_rectangle (&box, &rect);

    /* Check if image needs padding to fill extents. */
    w = source->width;
    h = source->height;
    if (_cairo_fixed_integer_ceil(box.p1.x) < 0 ||
 _cairo_fixed_integer_ceil(box.p1.y) < 0 ||
 _cairo_fixed_integer_floor(box.p2.y) > w ||
 _cairo_fixed_integer_floor(box.p2.y) > h)
    {
 pad_image = _cairo_image_surface_create_with_content (source->base.content,
             rect.width,
             rect.height);
 if (pad_image->status)
     return pad_image->status;

 _cairo_pattern_init_for_surface (&pad_pattern, &source->base);
 cairo_matrix_init_translate (&pad_pattern.base.matrix, rect.x, rect.y);
 pad_pattern.base.extend = CAIRO_EXTEND_PAD;
 status = _cairo_surface_paint (pad_image,
           CAIRO_OPERATOR_SOURCE,
           &pad_pattern.base,
           NULL);
 _cairo_pattern_fini (&pad_pattern.base);
 *image = (cairo_image_surface_t *) pad_image;
 image_extents->x = rect.x;
 image_extents->y = rect.y;
 image_extents->width = rect.width;
 image_extents->height = rect.height;
    } else {
 *image = NULL;
 status = CAIRO_STATUS_SUCCESS;
    }

    return status;
}

static cairo_int_status_t
_cairo_ps_surface_analyze_surface_pattern_transparency (cairo_ps_surface_t            *surface,
       const cairo_pattern_t         *pattern,
       const cairo_rectangle_int_t   *extents)
{
    cairo_rectangle_int_t src_surface_extents;
    cairo_bool_t src_surface_bounded;
    cairo_rectangle_int_t src_op_extents;
    cairo_surface_t *source_surface;
    double x_offset, y_offset;
    cairo_image_surface_t *image;
    void *image_extra;
    cairo_int_status_t status;
    cairo_image_transparency_t transparency;

    status = _cairo_ps_surface_acquire_source_surface_from_pattern (surface,
            pattern,
            extents,
            &src_surface_extents,
            &src_surface_bounded,
            &src_op_extents,
            &source_surface,
            &x_offset,
            &y_offset);
    if (unlikely (status))
 return status;

    status = _cairo_surface_acquire_source_image (source_surface, &image, &image_extra);
    if (unlikely (status))
 return status;

    if (image->base.status)
 return image->base.status;

    transparency = _cairo_image_analyze_transparency (image);
    switch (transparency) {
    case CAIRO_IMAGE_IS_OPAQUE:
 status = CAIRO_STATUS_SUCCESS;
 break;

    case CAIRO_IMAGE_HAS_BILEVEL_ALPHA:
 if (surface->ps_level == CAIRO_PS_LEVEL_2) {
     status = CAIRO_INT_STATUS_FLATTEN_TRANSPARENCY;
 } else {
     surface->ps_level_used = CAIRO_PS_LEVEL_3;
     status = CAIRO_STATUS_SUCCESS;
 }
 break;

    case CAIRO_IMAGE_HAS_ALPHA:
 status = CAIRO_INT_STATUS_FLATTEN_TRANSPARENCY;
 break;

    case CAIRO_IMAGE_UNKNOWN:
 ASSERT_NOT_REACHED;
    }

    _cairo_surface_release_source_image (source_surface, image, image_extra);
    _cairo_ps_surface_release_source_surface_from_pattern (surface, pattern, source_surface);

    return status;
}

static cairo_bool_t
surface_pattern_supported (const cairo_surface_pattern_t *pattern)
{
    if (pattern->surface->type == CAIRO_SURFACE_TYPE_RECORDING)
 return TRUE;

    if (pattern->surface->backend->acquire_source_image == NULL)
 return FALSE;

    /* Does an ALPHA-only source surface even make sense? Maybe, but I
     * don't think it's worth the extra code to support it. */

/* XXX: Need to write this function here...
    content = pattern->surface->content;
    if (content == CAIRO_CONTENT_ALPHA)
return FALSE;
*/

    return TRUE;
}

static cairo_bool_t
_gradient_pattern_supported (cairo_ps_surface_t    *surface,
        const cairo_pattern_t *pattern)
{
    double min_alpha, max_alpha;

    if (surface->ps_level == CAIRO_PS_LEVEL_2)
 return FALSE;

    /* Alpha gradients are only supported (by flattening the alpha)
     * if there is no variation in the alpha across the gradient. */
    _cairo_pattern_alpha_range (pattern, &min_alpha, &max_alpha);
    if (min_alpha != max_alpha)
 return FALSE;

    surface->ps_level_used = CAIRO_PS_LEVEL_3;

    return TRUE;
}

static cairo_bool_t
pattern_supported (cairo_ps_surface_t *surface, const cairo_pattern_t *pattern)
{
    switch (pattern->type) {
    case CAIRO_PATTERN_TYPE_SOLID:
 return TRUE;

    case CAIRO_PATTERN_TYPE_LINEAR:
    case CAIRO_PATTERN_TYPE_RADIAL:
    case CAIRO_PATTERN_TYPE_MESH:
 return _gradient_pattern_supported (surface, pattern);

    case CAIRO_PATTERN_TYPE_SURFACE:
 return surface_pattern_supported ((cairo_surface_pattern_t *) pattern);

    case CAIRO_PATTERN_TYPE_RASTER_SOURCE:
 return TRUE;

    default:
 ASSERT_NOT_REACHED;
 return FALSE;
    }
}

static cairo_bool_t
mask_supported (cairo_ps_surface_t *surface,
  const cairo_pattern_t *mask,
  const cairo_rectangle_int_t *extents)
{
    if (surface->ps_level == CAIRO_PS_LEVEL_2)
 return FALSE;

    if (mask->type == CAIRO_PATTERN_TYPE_SURFACE) {
 cairo_surface_pattern_t *surface_pattern = (cairo_surface_pattern_t *) mask;
 if (surface_pattern->surface->type == CAIRO_SURFACE_TYPE_IMAGE) {
     /* check if mask if opaque or bilevel alpha */
     if (_cairo_ps_surface_analyze_surface_pattern_transparency (surface, mask, extents) == CAIRO_INT_STATUS_SUCCESS) {
  surface->ps_level_used = CAIRO_PS_LEVEL_3;
  return TRUE;
     }
 }
    }

    return FALSE;
}

static cairo_int_status_t
_cairo_ps_surface_analyze_operation (cairo_ps_surface_t    *surface,
         cairo_operator_t       op,
         const cairo_pattern_t       *pattern,
         const cairo_pattern_t       *mask,
         const cairo_rectangle_int_t *extents)
{
    double min_alpha;

    if (surface->force_fallbacks &&
 surface->paginated_mode == CAIRO_PAGINATED_MODE_ANALYZE)
    {
 return CAIRO_INT_STATUS_UNSUPPORTED;
    }

    if (! pattern_supported (surface, pattern))
 return CAIRO_INT_STATUS_UNSUPPORTED;

    if (! (op == CAIRO_OPERATOR_SOURCE || op == CAIRO_OPERATOR_OVER))
 return CAIRO_INT_STATUS_UNSUPPORTED;

    /* Mask is only supported when the mask is an image with opaque or bilevel alpha. */
    if (mask && !mask_supported (surface, mask, extents))
 return CAIRO_INT_STATUS_UNSUPPORTED;

    if (pattern->type == CAIRO_PATTERN_TYPE_SURFACE) {
 cairo_surface_pattern_t *surface_pattern = (cairo_surface_pattern_t *) pattern;

 if (surface_pattern->surface->type == CAIRO_SURFACE_TYPE_RECORDING) {
     if (pattern->extend == CAIRO_EXTEND_PAD) {
  cairo_box_t box;
  cairo_rectangle_int_t rect;
  cairo_rectangle_int_t rec_extents;

  /* get the operation extents in pattern space */
  _cairo_box_from_rectangle (&box, extents);
  _cairo_matrix_transform_bounding_box_fixed (&pattern->matrix, &box, NULL);
  _cairo_box_round_to_rectangle (&box, &rect);

  /* Check if surface needs padding to fill extents */
  if (_cairo_surface_get_extents (surface_pattern->surface, &rec_extents)) {
      if (_cairo_fixed_integer_ceil(box.p1.x) < rec_extents.x ||
   _cairo_fixed_integer_ceil(box.p1.y) < rec_extents.y ||
   _cairo_fixed_integer_floor(box.p2.y) > rec_extents.x + rec_extents.width ||
   _cairo_fixed_integer_floor(box.p2.y) > rec_extents.y + rec_extents.height)
      {
   return CAIRO_INT_STATUS_UNSUPPORTED;
      }
  }
     }
     return CAIRO_INT_STATUS_ANALYZE_RECORDING_SURFACE_PATTERN;
 }
    }

    if (op == CAIRO_OPERATOR_SOURCE) {
 if (mask)
     return CAIRO_INT_STATUS_UNSUPPORTED;
 else
     return CAIRO_STATUS_SUCCESS;
    }

    /* CAIRO_OPERATOR_OVER is only supported for opaque patterns. If
     * the pattern contains transparency, we return
     * CAIRO_INT_STATUS_FLATTEN_TRANSPARENCY to the analysis
     * surface. If the analysis surface determines that there is
     * anything drawn under this operation, a fallback image will be
     * used. Otherwise the operation will be replayed during the
     * render stage and we blend the transparency into the white
     * background to convert the pattern to opaque.
     */
    if (pattern->type == CAIRO_PATTERN_TYPE_SURFACE || pattern->type == CAIRO_PATTERN_TYPE_RASTER_SOURCE)
 return _cairo_ps_surface_analyze_surface_pattern_transparency (surface, pattern, extents);

    /* Patterns whose drawn part is opaque are directly supported;
       those whose drawn part is partially transparent can be
       supported by flattening the alpha. */
    _cairo_pattern_alpha_range (pattern, &min_alpha, NULL);
    if (CAIRO_ALPHA_IS_OPAQUE (min_alpha))
 return CAIRO_STATUS_SUCCESS;

    return CAIRO_INT_STATUS_FLATTEN_TRANSPARENCY;
}

static cairo_bool_t
_cairo_ps_surface_operation_supported (cairo_ps_surface_t    *surface,
           cairo_operator_t       op,
           const cairo_pattern_t       *pattern,
           const cairo_pattern_t       *mask,
           const cairo_rectangle_int_t *extents)
{
    return _cairo_ps_surface_analyze_operation (surface, op, pattern, mask, extents) != CAIRO_INT_STATUS_UNSUPPORTED;
}

/* The "standard" implementation limit for PostScript string sizes is
 * 65535 characters (see PostScript Language Reference, Appendix
 * B).
 */
#define STRING_ARRAY_MAX_STRING_SIZE 65535
#define STRING_ARRAY_MAX_COLUMN      72

typedef struct _string_array_stream {
    cairo_output_stream_t base;
    cairo_output_stream_t *output;
    int column;
    int string_size;
    int tuple_count;
    cairo_bool_t use_strings;
} string_array_stream_t;

static cairo_status_t
_base85_string_wrap_stream_write (cairo_output_stream_t *base,
      const unsigned char   *data,
      unsigned int    length)
{
    string_array_stream_t *stream = (string_array_stream_t *) base;
    unsigned char c;

    if (length == 0)
 return CAIRO_STATUS_SUCCESS;

    while (length--) {
 if (stream->column == 0) {
     if (stream->use_strings) {
  _cairo_output_stream_printf (stream->output, "<~");
  stream->column = 2;
     } else {
  _cairo_output_stream_printf (stream->output, " ");
  stream->column = 1;
     }
 }

 c = *data++;
 _cairo_output_stream_write (stream->output, &c, 1);
 stream->column++;

 /* Base85 encodes each 4 byte tuple with a 5 ASCII character
 * tuple, except for 'z' with represents 4 zero bytes. We need
 * to keep track of the string length after decoding.
 */
 if (c == 'z') {
     stream->string_size += 4;
     stream->tuple_count = 0;
 } else {
     if (++stream->tuple_count == 5) {
  stream->string_size += 4;
  stream->tuple_count = 0;
     }
 }

 /* Split string at tuple boundary when there is not enough
 * space for another tuple */
 if (stream->use_strings &&
     stream->tuple_count == 0 &&
     stream->string_size > STRING_ARRAY_MAX_STRING_SIZE - 4)
 {
     _cairo_output_stream_printf (stream->output, "~>\n");
     stream->string_size = 0;
     stream->column = 0;
 }
 if (stream->column >= STRING_ARRAY_MAX_COLUMN) {
     _cairo_output_stream_printf (stream->output, "\n ");
     stream->column = 1;
 }
    }

    return _cairo_output_stream_get_status (stream->output);
}

static cairo_status_t
_base85_string_wrap_stream_close (cairo_output_stream_t *base)
{
    string_array_stream_t *stream = (string_array_stream_t *) base;

    if (!stream->use_strings || stream->string_size != 0)
 _cairo_output_stream_printf (stream->output, "~>");

    return _cairo_output_stream_get_status (stream->output);
}

/* A _base85_strings_stream wraps an existing output stream. It takes
 * base85 encoded data and splits it into strings each limited to
 * STRING_ARRAY_MAX_STRING_SIZE bytes when decoded. Each string is
 * enclosed in "<~" and "~>".

 * The string array stream is also careful to wrap the output within
 * STRING_ARRAY_MAX_COLUMN columns. Wrapped lines start with a space
 * in case an encoded line starts with %% which could be interpreted
 * as a DSC comment.
 */
static cairo_output_stream_t *
_base85_strings_stream_create (cairo_output_stream_t *output)
{
    string_array_stream_t *stream;

    stream = _cairo_malloc (sizeof (string_array_stream_t));
    if (unlikely (stream == NULL)) {
 _cairo_error_throw (CAIRO_STATUS_NO_MEMORY);
 return (cairo_output_stream_t *) &_cairo_output_stream_nil;
    }

    _cairo_output_stream_init (&stream->base,
          _base85_string_wrap_stream_write,
          NULL,
          _base85_string_wrap_stream_close);
    stream->output = output;
    stream->column = 0;
    stream->string_size = 0;
    stream->tuple_count = 0;
    stream->use_strings = TRUE;

    return &stream->base;
}

/* A base85_wrap_stream wraps an existing output stream. It wraps the
 * output within STRING_ARRAY_MAX_COLUMN columns. A base85 EOD "~>" is
 * appended to the end. Wrapped lines start with a space in case an
 * encoded line starts with %% which could be interpreted as a DSC
 * comment.
 */
static cairo_output_stream_t *
_base85_wrap_stream_create (cairo_output_stream_t *output)
{
    string_array_stream_t *stream;

    stream = _cairo_malloc (sizeof (string_array_stream_t));
    if (unlikely (stream == NULL)) {
 _cairo_error_throw (CAIRO_STATUS_NO_MEMORY);
 return (cairo_output_stream_t *) &_cairo_output_stream_nil;
    }

    _cairo_output_stream_init (&stream->base,
          _base85_string_wrap_stream_write,
          NULL,
          _base85_string_wrap_stream_close);
    stream->output = output;
    stream->column = 0;
    stream->string_size = 0;
    stream->tuple_count = 0;
    stream->use_strings = FALSE;

    return &stream->base;
}


/* PS Output - this section handles output of the parts of the recording
 * surface we can render natively in PS. */

static cairo_status_t
_cairo_ps_surface_flatten_image_transparency (cairo_ps_surface_t    *surface,
           cairo_image_surface_t *image,
           cairo_image_surface_t **opaque_image)
{
    cairo_surface_t *opaque;
    cairo_surface_pattern_t pattern;
    cairo_status_t status;

    opaque = cairo_image_surface_create (CAIRO_FORMAT_RGB24,
      image->width,
      image->height);
    if (unlikely (opaque->status))
 return opaque->status;

    if (surface->content == CAIRO_CONTENT_COLOR_ALPHA) {
 status = _cairo_surface_paint (opaque,
           CAIRO_OPERATOR_SOURCE,
           &_cairo_pattern_white.base,
           NULL);
 if (unlikely (status)) {
     cairo_surface_destroy (opaque);
     return status;
 }
    }

    _cairo_pattern_init_for_surface (&pattern, &image->base);
    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)) {
 cairo_surface_destroy (opaque);
 return status;
    }

    *opaque_image = (cairo_image_surface_t *) opaque;
    return CAIRO_STATUS_SUCCESS;
}

static cairo_status_t
_cairo_ps_surface_emit_base85_string (cairo_ps_surface_t    *surface,
          const unsigned char   *data,
          unsigned long      length,
          cairo_ps_compress_t    compress,
          cairo_bool_t           use_strings)
{
    cairo_output_stream_t *base85_stream, *string_array_stream, *deflate_stream;
    unsigned char *data_compressed;
    unsigned long data_compressed_size;
    cairo_status_t status, status2;
    cairo_status_t this_cannot_be_handled;

    if (use_strings)
 string_array_stream = _base85_strings_stream_create (surface->stream);
    else
 string_array_stream = _base85_wrap_stream_create (surface->stream);

    status = _cairo_output_stream_get_status (string_array_stream);
    if (unlikely (status))
 return _cairo_output_stream_destroy (string_array_stream);

    base85_stream = _cairo_base85_stream_create (string_array_stream);
    status = _cairo_output_stream_get_status (base85_stream);
    if (unlikely (status)) {
 status2 = _cairo_output_stream_destroy (string_array_stream);
 return _cairo_output_stream_destroy (base85_stream);
    }

    status = 0;
    switch (compress) {
 case CAIRO_PS_COMPRESS_NONE:
     _cairo_output_stream_write (base85_stream, data, length);
     break;

 case CAIRO_PS_COMPRESS_LZW:
     /* XXX: Should fix cairo-lzw to provide a stream-based interface
     * instead. */
     data_compressed_size = length;
     data_compressed = _cairo_lzw_compress ((unsigned char*)data, &data_compressed_size);
     if (unlikely (data_compressed == NULL)) {
  this_cannot_be_handled = _cairo_output_stream_destroy (string_array_stream);
  this_cannot_be_handled = _cairo_output_stream_destroy (base85_stream);
  return _cairo_error (CAIRO_STATUS_NO_MEMORY);
     }
     _cairo_output_stream_write (base85_stream, data_compressed, data_compressed_size);
     free (data_compressed);
     break;

 case CAIRO_PS_COMPRESS_DEFLATE:
     deflate_stream = _cairo_deflate_stream_create (base85_stream);
     if (_cairo_output_stream_get_status (deflate_stream)) {
  return _cairo_output_stream_destroy (deflate_stream);
     }
     _cairo_output_stream_write (deflate_stream, data, length);
     status = _cairo_output_stream_destroy (deflate_stream);
     if (unlikely (status)) {
  this_cannot_be_handled = _cairo_output_stream_destroy (string_array_stream);
  this_cannot_be_handled = _cairo_output_stream_destroy (base85_stream);
  return status;
     }
     break;
    }
    status = _cairo_output_stream_destroy (base85_stream);
    status2 = _cairo_output_stream_destroy (string_array_stream);
    if (status == CAIRO_STATUS_SUCCESS)
 status = status2;

    return status;
}

static const char *
get_interpolate (cairo_filter_t filter)
{
    const char *interpolate;

    switch (filter) {
 default:
 case CAIRO_FILTER_GOOD:
 case CAIRO_FILTER_BEST:
 case CAIRO_FILTER_BILINEAR:
     interpolate = "true";
     break;
 case CAIRO_FILTER_FAST:
 case CAIRO_FILTER_NEAREST:
 case CAIRO_FILTER_GAUSSIAN:
     interpolate = "false";
 break;
    }

    return interpolate;
}

static cairo_status_t
_cairo_ps_surface_emit_image (cairo_ps_surface_t          *surface,
         cairo_emit_surface_mode_t    mode,
         cairo_emit_surface_params_t *params)
{
    cairo_status_t status;
    unsigned char *data;
    unsigned long data_size;
    cairo_image_surface_t *ps_image;
    int x, y, i, a;
    cairo_image_transparency_t transparency;
    cairo_bool_t use_mask;
    uint32_t *pixel32;
    uint8_t *pixel8;
    int bit;
    cairo_image_color_t color;
    const char *interpolate;
    cairo_ps_compress_t compress;
    const char *compress_filter;
    cairo_image_surface_t *image_surf;
    cairo_image_surface_t *image;
    void *image_extra;

    if (params->src_surface->status)
 return params->src_surface->status;

    status = _cairo_surface_acquire_source_image (params->src_surface, &image_surf, &image_extra);
    if (unlikely (status))
 return status;

    image  = image_surf;
    if (image->format != CAIRO_FORMAT_RGB24 &&
 image->format != CAIRO_FORMAT_ARGB32 &&
 image->format != CAIRO_FORMAT_A8 &&
 image->format != CAIRO_FORMAT_A1)
    {
 cairo_surface_t *surf;
 cairo_surface_pattern_t pattern;

 surf = _cairo_image_surface_create_with_content (image->base.content,
        image->width,
        image->height);
 if (surf->status) {
     status = surf->status;
     goto bail0;
 }

 _cairo_pattern_init_for_surface (&pattern, &image->base);
 status = _cairo_surface_paint (surf,
           CAIRO_OPERATOR_SOURCE, &pattern.base,
           NULL);
        _cairo_pattern_fini (&pattern.base);
 image = (cairo_image_surface_t *) surf;
        if (unlikely (status))
            goto bail0;
    }
    ps_image = image;
    interpolate = get_interpolate (params->filter);

    if (params->stencil_mask) {
 use_mask = FALSE;
 color = CAIRO_IMAGE_IS_MONOCHROME;
 transparency = CAIRO_IMAGE_HAS_BILEVEL_ALPHA;
    } else {
 transparency = _cairo_image_analyze_transparency (image);

 /* PostScript can not represent the alpha channel, so we blend the
   current image over a white (or black for CONTENT_COLOR
   surfaces) RGB surface to eliminate it. */

 if (params->op == CAIRO_OPERATOR_SOURCE ||
     transparency == CAIRO_IMAGE_HAS_ALPHA ||
     (transparency == CAIRO_IMAGE_HAS_BILEVEL_ALPHA &&
      surface->ps_level == CAIRO_PS_LEVEL_2))
 {
     status = _cairo_ps_surface_flatten_image_transparency (surface,
           image,
           &ps_image);
     if (unlikely (status))
  return status;

     use_mask = FALSE;
 } else if (transparency == CAIRO_IMAGE_IS_OPAQUE) {
     use_mask = FALSE;
 } else { /* transparency == CAIRO_IMAGE_HAS_BILEVEL_ALPHA */
     use_mask = TRUE;
 }

 color = _cairo_image_analyze_color (ps_image);
    }

    /* Type 2 (mask and image interleaved) has the mask and image
     * samples interleaved by row.  The mask row is first, one bit per
     * pixel with (bit 7 first). The row is padded to byte
     * boundaries. The image data is 3 bytes per pixel RGB format. */
    switch (color) {
    default:
    case CAIRO_IMAGE_UNKNOWN_COLOR:
 ASSERT_NOT_REACHED;
    case CAIRO_IMAGE_IS_COLOR:
 data_size = ps_image->width * 3;
 break;
    case CAIRO_IMAGE_IS_GRAYSCALE:
 data_size = ps_image->width;
 break;
    case CAIRO_IMAGE_IS_MONOCHROME:
 data_size = (ps_image->width + 7)/8;
 break;
    }
    if (use_mask)
 data_size += (ps_image->width + 7)/8;
    data_size *= ps_image->height;
    data = _cairo_malloc (data_size);
    if (unlikely (data == NULL)) {
 status = _cairo_error (CAIRO_STATUS_NO_MEMORY);
 goto bail1;
    }

    i = 0;
    for (y = 0; y < ps_image->height; y++) {
 if (params->stencil_mask || use_mask) {
     /* mask row */
     if (ps_image->format == CAIRO_FORMAT_A1) {
  pixel8 = (uint8_t *) (ps_image->data + y * ps_image->stride);

  for (x = 0; x < (ps_image->width + 7) / 8; x++, pixel8++) {
      a = *pixel8;
      a = CAIRO_BITSWAP8_IF_LITTLE_ENDIAN (a);
      data[i++] = a;
  }
     } else {
  pixel8 = (uint8_t *) (ps_image->data + y * ps_image->stride);
  pixel32 = (uint32_t *) (ps_image->data + y * ps_image->stride);
  bit = 7;
  for (x = 0; x < ps_image->width; x++) {
      if (ps_image->format == CAIRO_FORMAT_ARGB32) {
   a = (*pixel32 & 0xff000000) >> 24;
   pixel32++;
      } else {
   a = *pixel8;
   pixel8++;
      }

      if (transparency == CAIRO_IMAGE_HAS_ALPHA) {
   data[i++] = a;
      } else { /* transparency == CAIRO_IMAGE_HAS_BILEVEL_ALPHA or CAIRO_IMAGE_IS_OPAQUE */
   if (bit == 7)
       data[i] = 0;
   if (a != 0)
       data[i] |= (1 << bit);
   bit--;
   if (bit < 0) {
       bit = 7;
       i++;
   }
      }
  }
  if (bit != 7)
      i++;
     }
 }
 if (params->stencil_mask)
     continue;

 /* image row*/
 pixel32 = (uint32_t *) (ps_image->data + y * ps_image->stride);
 bit = 7;
 for (x = 0; x < ps_image->width; x++, pixel32++) {
     int r, g, b;

     if (ps_image->format == CAIRO_FORMAT_ARGB32) {
  /* At this point ARGB32 images are either opaque or
 * bilevel alpha so we don't need to unpremultiply. */
  if (((*pixel32 & 0xff000000) >> 24) == 0) {
      r = g = b = 0;
  } else {
      r = (*pixel32 & 0x00ff0000) >> 16;
      g = (*pixel32 & 0x0000ff00) >>  8;
      b = (*pixel32 & 0x000000ff) >>  0;
  }
     } else if (ps_image->format == CAIRO_FORMAT_RGB24) {
  r = (*pixel32 & 0x00ff0000) >> 16;
  g = (*pixel32 & 0x0000ff00) >>  8;
  b = (*pixel32 & 0x000000ff) >>  0;
     } else {
  r = g = b = 0;
     }

     switch (color) {
  case CAIRO_IMAGE_IS_COLOR:
  case CAIRO_IMAGE_UNKNOWN_COLOR:
      data[i++] = r;
      data[i++] = g;
      data[i++] = b;
      break;

  case CAIRO_IMAGE_IS_GRAYSCALE:
      data[i++] = r;
      break;

  case CAIRO_IMAGE_IS_MONOCHROME:
      if (bit == 7)
   data[i] = 0;
      if (r != 0)
   data[i] |= (1 << bit);
      bit--;
      if (bit < 0) {
   bit = 7;
   i++;
      }
      break;
     }
 }
 if (bit != 7)
     i++;
    }

    if (surface->ps_level == CAIRO_PS_LEVEL_2) {
 compress = CAIRO_PS_COMPRESS_LZW;
 compress_filter = "LZWDecode";
    } else {
 compress = CAIRO_PS_COMPRESS_DEFLATE;
 compress_filter = "FlateDecode";
 surface->ps_level_used = CAIRO_PS_LEVEL_3;
    }

    if (surface->paint_proc) {
 /* Emit the image data as a base85-encoded string which will
 * be used as the data source for the image operator later. */
 _cairo_output_stream_printf (surface->stream,
         "/CairoData [\n");

 status = _cairo_ps_surface_emit_base85_string (surface,
             data,
             data_size,
             compress,
             TRUE);
 if (unlikely (status))
     goto bail2;

 _cairo_output_stream_printf (surface->stream,
         "] def\n");
 _cairo_output_stream_printf (surface->stream,
         "/CairoDataIndex 0 def\n");
    } else {
 _cairo_output_stream_printf (surface->stream,
         "/cairo_ascii85_file currentfile /ASCII85Decode filter def\n");
    }

    if (use_mask) {
 _cairo_output_stream_printf (surface->stream,
         "%s setcolorspace\n"
         "<<\n"
         "  /ImageType 3\n"
         "  /InterleaveType 2\n"
         "  /DataDict <<\n"
         "    /ImageType 1\n"
         "    /Width %d\n"
         "    /Height %d\n"
         "    /Interpolate %s\n"
         "    /BitsPerComponent %d\n"
         "    /Decode [ %s ]\n",
         color == CAIRO_IMAGE_IS_COLOR ? "/DeviceRGB" : "/DeviceGray",
         ps_image->width,
         ps_image->height,
         interpolate,
         color == CAIRO_IMAGE_IS_MONOCHROME ? 1 : 8,
         color == CAIRO_IMAGE_IS_COLOR ? "0 1 0 1 0 1" : "0 1");

 if (surface->paint_proc) {
     _cairo_output_stream_printf (surface->stream,
      "    /DataSource { cairo_data_source } /%s filter\n",
      compress_filter);
 } else {
     _cairo_output_stream_printf (surface->stream,
      "    /DataSource cairo_ascii85_file /%s filter\n",
      compress_filter);
 }

 _cairo_output_stream_printf (surface->stream,
         "    /ImageMatrix [ %d 0 0 %d 0 %d ]\n"
         "  >>\n"
         "  /MaskDict <<\n"
         "    /ImageType 1\n"
         "    /Width %d\n"
         "    /Height %d\n"
         "    /Interpolate %s\n"
         "    /BitsPerComponent 1\n"
         "    /Decode [ 1 0 ]\n"
         "    /ImageMatrix [ %d 0 0 %d 0 %d ]\n"
         "  >>\n"
         ">>\n"
         "image\n",
         ps_image->width,
         -ps_image->height,
         ps_image->height,
         ps_image->width,
         ps_image->height,
         interpolate,
         ps_image->width,
         -ps_image->height,
         ps_image->height);
    } else {
 const char *decode;

 if (!params->stencil_mask) {
     _cairo_output_stream_printf (surface->stream,
      "%s setcolorspace\n",
      color == CAIRO_IMAGE_IS_COLOR ? "/DeviceRGB" : "/DeviceGray");
 }
 if (params->stencil_mask)
     decode = "1 0";
 else if (color == CAIRO_IMAGE_IS_COLOR)
     decode = "0 1 0 1 0 1";
 else
     decode ="0 1";

 _cairo_output_stream_printf (surface->stream,
         "<<\n"
         "  /ImageType 1\n"
         "  /Width %d\n"
         "  /Height %d\n"
         "  /Interpolate %s\n"
         "  /BitsPerComponent %d\n"
         "  /Decode [ %s ]\n",
         ps_image->width,
         ps_image->height,
         interpolate,
         color == CAIRO_IMAGE_IS_MONOCHROME ? 1 : 8,
         decode);
 if (surface->paint_proc) {
     _cairo_output_stream_printf (surface->stream,
      "  /DataSource { cairo_data_source } /%s filter\n",
      compress_filter);
 } else {
     _cairo_output_stream_printf (surface->stream,
      "  /DataSource cairo_ascii85_file /%s filter\n",
      compress_filter);
 }

 _cairo_output_stream_printf (surface->stream,
         "  /ImageMatrix [ %d 0 0 %d 0 %d ]\n"
         ">>\n"
         "%s%s\n",
         ps_image->width,
         -ps_image->height,
         ps_image->height,
         surface->paint_proc ? "" : "cairo_",
         params->stencil_mask ? "imagemask" : "image");
    }

    if (!surface->paint_proc) {
 /* Emit the image data as a base85-encoded string which will
 * be used as the data source for the image operator. */
 status = _cairo_ps_surface_emit_base85_string (surface,
             data,
             data_size,
             compress,
             FALSE);
 _cairo_output_stream_printf (surface->stream, "\n");
    } else {
 status = CAIRO_STATUS_SUCCESS;
    }

bail2:
    free (data);

bail1:
    if (!use_mask && ps_image != image)
 cairo_surface_destroy (&ps_image->base);

bail0:
    if (image != image_surf)
 cairo_surface_destroy (&image->base);

    _cairo_surface_release_source_image (params->src_surface, image_surf, image_extra);

    return status;
}

static cairo_int_status_t
_cairo_ps_surface_emit_jpeg_image (cairo_ps_surface_t          *surface,
       cairo_emit_surface_mode_t    mode,
       cairo_emit_surface_params_t *params)
{
    cairo_status_t status;
    const unsigned char *mime_data;
    unsigned long mime_data_length;
    cairo_image_info_t info;
    const char *colorspace;
    const char *decode;

    if (unlikely (params->src_surface->status))
 return params->src_surface->status;

    cairo_surface_get_mime_data (params->src_surface, CAIRO_MIME_TYPE_JPEG,
     &mime_data, &mime_data_length);
    if (mime_data == NULL)
 return CAIRO_INT_STATUS_UNSUPPORTED;

    status = _cairo_image_info_get_jpeg_info (&info, mime_data, mime_data_length);
    if (unlikely (status))
 return status;

    switch (info.num_components) {
 case 1:
     colorspace = "/DeviceGray";
     decode = "0 1";
     break;
 case 3:
     colorspace = "/DeviceRGB";
     decode =  "0 1 0 1 0 1";
     break;
 case 4:
     colorspace = "/DeviceCMYK";
     decode =  "0 1 0 1 0 1 0 1";
     break;
 default:
     return CAIRO_INT_STATUS_UNSUPPORTED;
    }

    /* At this point we know emitting jpeg will succeed. */
    if (mode == CAIRO_EMIT_SURFACE_ANALYZE) {
 params->is_image = TRUE;
 params->approx_size = mime_data_length;
 return CAIRO_STATUS_SUCCESS;
    }

    if (surface->paint_proc) {
 /* Emit the image data as a base85-encoded string which will
 * be used as the data source for the image operator later. */
 _cairo_output_stream_printf (surface->stream,
         "/CairoData [\n");

 status = _cairo_ps_surface_emit_base85_string (surface,
             mime_data,
             mime_data_length,
             CAIRO_PS_COMPRESS_NONE,
             TRUE);
 if (unlikely (status))
     return status;

 _cairo_output_stream_printf (surface->stream,
         "] def\n");
 _cairo_output_stream_printf (surface->stream,
         "/CairoDataIndex 0 def\n");
    } else {
 _cairo_output_stream_printf (surface->stream,
         "/cairo_ascii85_file currentfile /ASCII85Decode filter def\n");
    }

    _cairo_output_stream_printf (surface->stream,
     "%s setcolorspace\n"
     "<<\n"
     "  /ImageType 1\n"
     "  /Width %d\n"
     "  /Height %d\n"
     "  /BitsPerComponent %d\n"
     "  /Interpolate %s\n"
     "  /Decode [ %s ]\n",
     colorspace,
     info.width,
     info.height,
     info.bits_per_component,
     get_interpolate (params->filter),
                                 decode);

    if (surface->paint_proc) {
 _cairo_output_stream_printf (surface->stream,
         "  /DataSource { cairo_data_source } /DCTDecode filter\n");
    } else {
 _cairo_output_stream_printf (surface->stream,
         "  /DataSource cairo_ascii85_file /DCTDecode filter\n");
    }

    _cairo_output_stream_printf (surface->stream,
     "  /ImageMatrix [ %d 0 0 %d 0 %d ]\n"
     ">>\n"
     "%simage\n",
     info.width,
     -info.height,
     info.height,
     surface->paint_proc ? "" : "cairo_");

    if (!surface->paint_proc) {
 /* Emit the image data as a base85-encoded string which will
 * be used as the data source for the image operator. */
 status = _cairo_ps_surface_emit_base85_string (surface,
             mime_data,
             mime_data_length,
             CAIRO_PS_COMPRESS_NONE,
             FALSE);
    }

    return status;
}

static cairo_int_status_t
_cairo_ps_surface_emit_ccitt_image (cairo_ps_surface_t          *surface,
        cairo_emit_surface_mode_t    mode,
        cairo_emit_surface_params_t *params)
{
    cairo_status_t status;
    const unsigned char *ccitt_data;
    unsigned long ccitt_data_len;
    const unsigned char *ccitt_params_data;
    unsigned long ccitt_params_data_len;
    char *ccitt_params_string;
    cairo_ccitt_params_t ccitt_params;

    if (unlikely (params->src_surface->status))
 return params->src_surface->status;

    cairo_surface_get_mime_data (params->src_surface, CAIRO_MIME_TYPE_CCITT_FAX,
     &ccitt_data, &ccitt_data_len);
    if (ccitt_data == NULL)
 return CAIRO_INT_STATUS_UNSUPPORTED;

    cairo_surface_get_mime_data (params->src_surface, CAIRO_MIME_TYPE_CCITT_FAX_PARAMS,
     &ccitt_params_data, &ccitt_params_data_len);
    if (ccitt_params_data == NULL)
 return CAIRO_INT_STATUS_UNSUPPORTED;

    /* ensure params_string is null terminated */
    ccitt_params_string = _cairo_strndup ((const char *)ccitt_params_data, ccitt_params_data_len);
    if (unlikely (ccitt_params_string == NULL))
 return _cairo_surface_set_error (&surface->base, CAIRO_STATUS_NO_MEMORY);

    status = _cairo_tag_parse_ccitt_params (ccitt_params_string, &ccitt_params);
    if (unlikely(status))
 return status;

    free (ccitt_params_string);

    if (ccitt_params.columns <= 0 || ccitt_params.rows <= 0)
 return CAIRO_INT_STATUS_UNSUPPORTED;

    /* At this point we know emitting ccitt will succeed. */
    if (mode == CAIRO_EMIT_SURFACE_ANALYZE) {
 params->is_image = TRUE;
 params->approx_size = ccitt_data_len;
 return CAIRO_STATUS_SUCCESS;
    }

    if (surface->paint_proc) {
 /* Emit the image data as a base85-encoded string which will
 * be used as the data source for the image operator later. */
 _cairo_output_stream_printf (surface->stream,
         "/CairoData [\n");

 status = _cairo_ps_surface_emit_base85_string (surface,
             ccitt_data,
             ccitt_data_len,
             CAIRO_PS_COMPRESS_NONE,
             TRUE);
 if (unlikely (status))
     return status;

 _cairo_output_stream_printf (surface->stream,
         "] def\n");
 _cairo_output_stream_printf (surface->stream,
         "/CairoDataIndex 0 def\n");
    } else {
 _cairo_output_stream_printf (surface->stream,
         "/cairo_ascii85_file currentfile /ASCII85Decode filter def\n");
    }

    if (!params->stencil_mask) {
 _cairo_output_stream_printf (surface->stream,
         "/DeviceGray setcolorspace\n");
    }

    _cairo_output_stream_printf (surface->stream,
     "<<\n"
     "  /ImageType 1\n"
     "  /Width %d\n"
     "  /Height %d\n"
     "  /BitsPerComponent 1\n"
     "  /Interpolate %s\n"
     "  /Decode [ 0 1 ]\n",
     ccitt_params.columns,
     ccitt_params.rows,
     get_interpolate (params->filter));

    if (surface->paint_proc) {
 _cairo_output_stream_printf (surface->stream,
         "  /DataSource { cairo_data_source }\n");
    } else {
 _cairo_output_stream_printf (surface->stream,
         "  /DataSource cairo_ascii85_file\n");
    }

    _cairo_output_stream_printf (surface->stream,
     "  << /Columns %d /Rows %d /K %d\n",
     ccitt_params.columns,
     ccitt_params.rows,
     ccitt_params.k);

    if (ccitt_params.end_of_line)
 _cairo_output_stream_printf (surface->stream, "     /EndOfLine true\n");

    if (ccitt_params.encoded_byte_align)
 _cairo_output_stream_printf (surface->stream, "     /EncodedByteAlign true\n");

    if (!ccitt_params.end_of_block)
 _cairo_output_stream_printf (surface->stream, "     /EndOfBlock false\n");

    if (ccitt_params.black_is_1)
 _cairo_output_stream_printf (surface->stream, "     /BlackIs1 true\n");

    if (ccitt_params.damaged_rows_before_error > 0) {
 _cairo_output_stream_printf (surface->stream,
         "     /DamagedRowsBeforeError %d\n",
         ccitt_params.damaged_rows_before_error);
    }

    _cairo_output_stream_printf (surface->stream,
     "  >> /CCITTFaxDecode filter\n");

    _cairo_output_stream_printf (surface->stream,
     "  /ImageMatrix [ %d 0 0 %d 0 %d ]\n"
     ">>\n"
     "%s%s\n",
     ccitt_params.columns,
     -ccitt_params.rows,
     ccitt_params.rows,
     surface->paint_proc ? "" : "cairo_",
     params->stencil_mask ? "imagemask" : "image");

    if (!surface->paint_proc) {
 /* Emit the image data as a base85-encoded string which will
 * be used as the data source for the image operator. */
 status = _cairo_ps_surface_emit_base85_string (surface,
             ccitt_data,
             ccitt_data_len,
             CAIRO_PS_COMPRESS_NONE,
             FALSE);
    }

    return status;
}

/* The '|' character is not used in PS (including ASCII85).  We can
 * speed up the search by first searching for the first char before
 * comparing strings.
 */
#define SUBFILE_FILTER_EOD "|EOD|"

/* Count number of non overlapping occurrences of SUBFILE_FILTER_EOD in data. */
static int
count_eod_strings (const unsigned char *data, unsigned long data_len)
{
    const unsigned char *p = data;
    const unsigned char *end;
    int first_char, len, count;
    const char *eod_str = SUBFILE_FILTER_EOD;

    first_char = eod_str[0];
    len = strlen (eod_str);
    p = data;
    end = data + data_len - len + 1;
    count = 0;
    while (p < end) {
 p = memchr (p, first_char, end - p);
 if (!p)
     break;

 if (memcmp (p, eod_str, len) == 0) {
     count++;
     p += len;
 }
    }

    return count;
}

static cairo_status_t
_cairo_ps_surface_emit_eps (cairo_ps_surface_t          *surface,
       cairo_emit_surface_mode_t    mode,
       cairo_emit_surface_params_t *params)
{
    cairo_status_t status;
    const unsigned char *eps_data = NULL;
    unsigned long eps_data_len;
    const unsigned char *eps_params_string = NULL;
    unsigned long eps_params_string_len;
    char *params_string = NULL;
    cairo_eps_params_t eps_params;
    cairo_matrix_t mat;
    double eps_width, eps_height;

    if (unlikely (params->src_surface->status))
 return params->src_surface->status;

    /* We only embed EPS with level 3 as we may use ReusableStreamDecode and we
     * don't know what level the EPS file requires. */
    if (surface->ps_level == CAIRO_PS_LEVEL_2)
 return CAIRO_INT_STATUS_UNSUPPORTED;

    cairo_surface_get_mime_data (params->src_surface, CAIRO_MIME_TYPE_EPS,
     &eps_data, &eps_data_len);
    if (eps_data == NULL)
 return CAIRO_INT_STATUS_UNSUPPORTED;

    cairo_surface_get_mime_data (params->src_surface, CAIRO_MIME_TYPE_EPS_PARAMS,
     &eps_params_string, &eps_params_string_len);
    if (eps_params_string == NULL)
 return CAIRO_INT_STATUS_UNSUPPORTED;

    /* ensure params_string is null terminated */
    params_string = _cairo_strndup ((const char *)eps_params_string, eps_params_string_len);
    if (unlikely (params_string == NULL))
 return _cairo_surface_set_error (&surface->base, CAIRO_STATUS_NO_MEMORY);

    status = _cairo_tag_parse_eps_params (params_string, &eps_params);
    if (unlikely(status))
 return status;

    /* At this point we know emitting EPS will succeed. */
    if (mode == CAIRO_EMIT_SURFACE_ANALYZE) {
 params->is_image = FALSE;
 params->approx_size = eps_data_len;
 surface->contains_eps = TRUE;

 /* Find number of occurrences of SUBFILE_FILTER_EOD in the EPS data.
 * We will need it before emitting the data if a ReusableStream is used.
         */
 params->eod_count = count_eod_strings (eps_data, eps_data_len);
 return CAIRO_STATUS_SUCCESS;
    }

    surface->ps_level_used = CAIRO_PS_LEVEL_3;
    _cairo_output_stream_printf (surface->stream, "cairo_eps_begin\n");

    eps_width = eps_params.bbox.p2.x - eps_params.bbox.p1.x;
    eps_height = eps_params.bbox.p2.y - eps_params.bbox.p1.y;
    cairo_matrix_init_translate (&mat,
     params->src_surface_extents->x,
     params->src_surface_extents->y);
    cairo_matrix_scale (&mat,
   params->src_surface_extents->width/eps_width,
   params->src_surface_extents->height/eps_height);
    cairo_matrix_scale (&mat, 1, -1);
    cairo_matrix_translate (&mat, -eps_params.bbox.p1.x, -eps_params.bbox.p2.y);

    if (! _cairo_matrix_is_identity (&mat)) {
 _cairo_output_stream_printf (surface->stream, "[ ");
 _cairo_output_stream_print_matrix (surface->stream, &mat);
 _cairo_output_stream_printf (surface->stream, " ] concat\n");
    }

    _cairo_output_stream_printf (surface->stream,
     "%f %f %f %f rectclip\n",
     eps_params.bbox.p1.x,
     eps_params.bbox.p1.y,
     eps_width,
     eps_height);

    _cairo_output_stream_printf (surface->stream,
     "%%%%BeginDocument: Document%d\n",
     params->src_surface->unique_id);
    _cairo_output_stream_write (surface->stream, eps_data, eps_data_len);
    _cairo_output_stream_printf (surface->stream, "%%%%EndDocument");
    _cairo_output_stream_printf (surface->stream, "\ncairo_eps_end\n");

    return CAIRO_STATUS_SUCCESS;
}

static cairo_status_t
_cairo_ps_surface_emit_recording_surface (cairo_ps_surface_t          *surface,
       cairo_surface_t             *recording_surface,
       unsigned int                 regions_id,
       const cairo_rectangle_int_t *recording_extents,
       cairo_bool_t                 subsurface)
{
    double old_width, old_height;
    cairo_rectangle_int_t old_surface_extents;
    cairo_bool_t old_surface_bounded;
    cairo_matrix_t old_cairo_to_ps;
    cairo_content_t old_content;
    cairo_surface_clipper_t old_clipper;
    cairo_int_status_t status;
    cairo_surface_t *free_me = NULL;
    unsigned int id;
    int i, recording_surf_stack_size;

    /* Prevent infinite recursion if the recording_surface references a recording
     * currently being emitted */
    recording_surf_stack_size = _cairo_array_num_elements (&surface->recording_surf_stack);
    for (i = 0; i < recording_surf_stack_size; i++) {
 _cairo_array_copy_element (&surface->recording_surf_stack, i, &id);
 if (id == recording_surface->unique_id)
     return CAIRO_STATUS_SUCCESS;
    }
    id = recording_surface->unique_id;
    status = _cairo_array_append (&surface->recording_surf_stack, &id);
    if (unlikely (status))
 return status;

    if (_cairo_surface_is_snapshot (recording_surface))
 free_me = recording_surface = _cairo_surface_snapshot_get_target (recording_surface);

    old_content = surface->content;
    old_width = surface->width;
    old_height = surface->height;
    old_surface_extents = surface->surface_extents;
    old_surface_bounded = surface->surface_bounded;
    old_cairo_to_ps = surface->cairo_to_ps;
    old_clipper = surface->clipper;
    _cairo_surface_clipper_init (&surface->clipper,
     _cairo_ps_surface_clipper_intersect_clip_path);

#if DEBUG_PS
    _cairo_output_stream_printf (surface->stream,
     "%% _cairo_ps_surface_emit_recording_surface"
     " x: %d, y: %d, w: %d, h: %d subsurface: %d\n",
     recording_extents->x, recording_extents->y,
     recording_extents->width, recording_extents->height,
     subsurface);
#endif

    surface->width = recording_extents->width;
    surface->height = recording_extents->height;
    surface->surface_extents = *recording_extents;
    surface->current_pattern_is_solid_color = FALSE;
    _cairo_pdf_operators_reset (&surface->pdf_operators);
    cairo_matrix_init (&surface->cairo_to_ps, 1, 0, 0, 1, 0, 0);
    _cairo_pdf_operators_set_cairo_to_pdf_matrix (&surface->pdf_operators,
        &surface->cairo_to_ps);
    _cairo_output_stream_printf (surface->stream, "  q\n");

    if (recording_surface->content == CAIRO_CONTENT_COLOR) {
 surface->content = CAIRO_CONTENT_COLOR;
 _cairo_output_stream_printf (surface->stream,
         "  0 g %d %d %d %d rectfill\n",
         recording_extents->x,
         recording_extents->y,
         recording_extents->width,
         recording_extents->height);
    }

    status = _cairo_recording_surface_replay_region (recording_surface,
           regions_id,
           subsurface ? recording_extents : NULL,
           &surface->base,
           CAIRO_RECORDING_REGION_NATIVE);
    assert (status != CAIRO_INT_STATUS_UNSUPPORTED);
    if (unlikely (status))
 return status;

    status = _cairo_pdf_operators_flush (&surface->pdf_operators);
    if (unlikely (status))
 return status;

    _cairo_output_stream_printf (surface->stream, "  Q\n");

    _cairo_surface_clipper_reset (&surface->clipper);
    surface->clipper = old_clipper;
    surface->content = old_content;
    surface->width = old_width;
    surface->height = old_height;
    surface->surface_extents = old_surface_extents;
    surface->surface_bounded = old_surface_bounded;
    surface->current_pattern_is_solid_color = FALSE;
    _cairo_pdf_operators_reset (&surface->pdf_operators);
    surface->cairo_to_ps = old_cairo_to_ps;

    _cairo_pdf_operators_set_cairo_to_pdf_matrix (&surface->pdf_operators,
        &surface->cairo_to_ps);
    cairo_surface_destroy (free_me);

    _cairo_array_truncate (&surface->recording_surf_stack, recording_surf_stack_size);

    return status;
}

static void
_cairo_ps_surface_flatten_transparency (cairo_ps_surface_t *surface,
     const cairo_color_t *color,
     double   *red,
     double   *green,
     double   *blue)
{
    *red   = color->red;
    *green = color->green;
    *blue  = color->blue;

    if (! CAIRO_COLOR_IS_OPAQUE (color)) {
 *red   *= color->alpha;
 *green *= color->alpha;
 *blue  *= color->alpha;
 if (surface->content == CAIRO_CONTENT_COLOR_ALPHA) {
     double one_minus_alpha = 1. - color->alpha;
     *red   += one_minus_alpha;
     *green += one_minus_alpha;
     *blue  += one_minus_alpha;
 }
    }
}

static void
_cairo_ps_surface_emit_solid_pattern (cairo_ps_surface_t    *surface,
          cairo_solid_pattern_t *pattern)
{
    double red, green, blue;

    _cairo_ps_surface_flatten_transparency (surface, &pattern->color, &red, &green, &blue);

    if (color_is_gray (red, green, blue))
 _cairo_output_stream_printf (surface->stream,
         "%f g\n",
         red);
    else
 _cairo_output_stream_printf (surface->stream,
         "%f %f %f rg\n",
         red, green, blue);
}

/*
 * PS Forms are used for sources that have CAIRO_MIME_TYPE_UNIQUE_ID. They will be
 * emitted once in the PS header and can be rendered with the 'execform' operator.
 *
 * This function tries adding the source the form hash table. If the source does not
 * have CAIRO_MIME_TYPE_UNIQUE_ID, CAIRO_INT_STATUS_UNSUPPORTED is returned.

 * @source: [in] the source for the form
 * @params: [in] source parameters
 * @test: [in] if TRUE, test if form will be used (excludes size check)
 * @ps_form [out] the new or existing entry int the hash table.
 *                image or recording.
 */
static cairo_int_status_t
_cairo_ps_surface_use_form (cairo_ps_surface_t           *surface,
       cairo_emit_surface_params_t  *params,
       cairo_bool_t                  test,
       cairo_ps_form_t             **ps_form)
{
    cairo_ps_form_t source_key;
    cairo_ps_form_t *source_entry;
    unsigned char *unique_id = NULL;
    unsigned long unique_id_length = 0;
    cairo_status_t status;
    long max_size;

    if (params->op != CAIRO_OPERATOR_OVER || params->stencil_mask)
 return CAIRO_INT_STATUS_UNSUPPORTED;

    if (params->src_surface->backend->type == CAIRO_SURFACE_TYPE_SUBSURFACE)
 return CAIRO_INT_STATUS_UNSUPPORTED;

    cairo_surface_get_mime_data (params->src_surface, CAIRO_MIME_TYPE_UNIQUE_ID,
     (const unsigned char **) &source_key.unique_id,
     &source_key.unique_id_length);
    if (source_key.unique_id == NULL || source_key.unique_id_length == 0)
 return CAIRO_INT_STATUS_UNSUPPORTED;

    if (test)
 return CAIRO_STATUS_SUCCESS;

    source_key.filter = params->filter;
    _cairo_ps_form_init_key (&source_key);
    source_entry = _cairo_hash_table_lookup (surface->forms, &source_key.base);
    if (source_entry) {
 _cairo_rectangle_union (&source_entry->required_extents, params->src_op_extents);
 *ps_form = source_entry;
 return CAIRO_STATUS_SUCCESS;
    }

    if (surface->ps_level == CAIRO_PS_LEVEL_3)
 max_size = MAX_L3_FORM_DATA;
    else
 max_size = MAX_L3_FORM_DATA;

    /* Don't add any more Forms if we exceed the form memory limit */
    if (surface->total_form_size + params->approx_size > max_size)
 return CAIRO_INT_STATUS_UNSUPPORTED;

    surface->total_form_size += params->approx_size > max_size;
    unique_id = _cairo_malloc (source_key.unique_id_length);
    if (unique_id == NULL)
 return _cairo_error (CAIRO_STATUS_NO_MEMORY);

    unique_id_length = source_key.unique_id_length;
    memcpy (unique_id, source_key.unique_id, unique_id_length);

    source_entry = calloc (sizeof (cairo_ps_form_t), 1);
    if (source_entry == NULL) {
 status = _cairo_error (CAIRO_STATUS_NO_MEMORY);
 goto fail;
    }

    source_entry->unique_id_length = unique_id_length;
    source_entry->unique_id = unique_id;
    source_entry->id = surface->num_forms++;
    source_entry->src_surface = cairo_surface_reference (params->src_surface);
    source_entry->regions_id = params->regions_id;
    if (_cairo_surface_is_recording (source_entry->src_surface) && source_entry->regions_id != 0)
 _cairo_recording_surface_region_array_reference (source_entry->src_surface, source_entry->regions_id);
    source_entry->src_surface_extents = *params->src_surface_extents;
    source_entry->src_surface_bounded = params->src_surface_bounded;
    source_entry->required_extents = *params->src_op_extents;
    source_entry->filter = params->filter;
    source_entry->is_image = params->is_image;
    _cairo_ps_form_init_key (source_entry);
    status = _cairo_hash_table_insert (surface->forms, &source_entry->base);
    if (unlikely(status))
 goto fail;

    *ps_form = source_entry;
    return CAIRO_STATUS_SUCCESS;

  fail:
    free (unique_id);
    free (source_entry);
    return status;
}

static cairo_int_status_t
_cairo_ps_surface_emit_form (cairo_ps_surface_t          *surface,
        cairo_emit_surface_params_t *params,
        cairo_bool_t                 test)
{
    cairo_ps_form_t *ps_form = NULL;
    cairo_status_t status;

    status = _cairo_ps_surface_use_form (surface,
      params,
      test,
      &ps_form);
    if (test || status)
 return status;

    /* _cairo_ps_form_emit will use Level 3 if permitted by ps_level */
    if (surface->ps_level == CAIRO_PS_LEVEL_3)
 surface->ps_level_used = CAIRO_PS_LEVEL_3;

    _cairo_output_stream_printf (surface->stream,
     "/cairoform-%d /Form findresource execform\n",
     ps_form->id);

    return CAIRO_STATUS_SUCCESS;
}

/* Emit a surface. This function has three modes.
 *
 * CAIRO_EMIT_SURFACE_ANALYZE: This will determine the surface type to
 * be emitted and approximate size. is_image is set to TRUE if the
 * emitted surface is an image surface (including mime images). This
 * is used by the caller to setup the correct CTM. approx_size is set
 * to the approximate size of the emitted surface and is used as an
 * input by the emit mode.
 *
 * CAIRO_EMIT_SURFACE_EMIT: Emits the surface will be emitted. The
 * approx_size and the surface unique id values are used to determine
 * if a Form should be used. If a form is used, the exec form
 * operation is emitted and the surface is added to the forms hash
 * table.
 *
 * CAIRO_EMIT_SURFACE_EMIT_FORM: Emits the form definition for the surface.
 *
 * Usage is:
 * 1) Setup input params and call with ANALYZE.
 * 2) Setup CTM for surface and call with EMIT using same params struct.
 * The EMIT_FORM mode is used when emitting the form definitions.
 */
static cairo_int_status_t
_cairo_ps_surface_emit_surface (cairo_ps_surface_t          *surface,
    cairo_emit_surface_mode_t    mode,
    cairo_emit_surface_params_t *params)
{
    cairo_int_status_t status;
    cairo_output_stream_t *old_stream = NULL;
    cairo_bool_t use_form;

    /* Try emitting as a form. Returns unsupported if the surface is
     * deemed unsuitable for a form. */
    use_form = FALSE;
    if (mode == CAIRO_EMIT_SURFACE_ANALYZE || mode == CAIRO_EMIT_SURFACE_EMIT) {
 status = _cairo_ps_surface_emit_form (surface,
           params,
           mode == CAIRO_EMIT_SURFACE_ANALYZE);
 use_form = (status == CAIRO_INT_STATUS_SUCCESS);
 if (status != CAIRO_INT_STATUS_SUCCESS && status != CAIRO_INT_STATUS_UNSUPPORTED)
     return status;

 if (mode == CAIRO_EMIT_SURFACE_EMIT && status == CAIRO_INT_STATUS_SUCCESS)
     return status;
    }

    status = _cairo_ps_surface_emit_eps (surface, mode, params);
    if (status == CAIRO_INT_STATUS_SUCCESS) {
 params->is_image = FALSE;
 goto surface_emitted;
    }
    if (status != CAIRO_INT_STATUS_UNSUPPORTED)
 return status;

    status = _cairo_ps_surface_emit_jpeg_image (surface, mode, params);
    if (status == CAIRO_INT_STATUS_SUCCESS) {
 params->is_image = TRUE;
 goto surface_emitted;
    }
    if (status != CAIRO_INT_STATUS_UNSUPPORTED)
 return status;

    status = _cairo_ps_surface_emit_ccitt_image (surface, mode, params);
    if (status == CAIRO_INT_STATUS_SUCCESS) {
 params->is_image = TRUE;
 goto surface_emitted;
    }
    if (status != CAIRO_INT_STATUS_UNSUPPORTED)
 return status;

    if (mode == CAIRO_EMIT_SURFACE_ANALYZE) {
 /* Find size of image or recording surface by emitting to a memory stream */
 status = _cairo_pdf_operators_flush (&surface->pdf_operators);
 if (unlikely (status))
     return status;

 old_stream = surface->stream;
 surface->stream = _cairo_memory_stream_create ();
 _cairo_pdf_operators_set_stream (&surface->pdf_operators, surface->stream);
    }

    if (params->src_surface->type == CAIRO_SURFACE_TYPE_RECORDING) {
 params->is_image = FALSE;
 if (params->src_surface->backend->type == CAIRO_SURFACE_TYPE_SUBSURFACE) {
     cairo_surface_subsurface_t *sub = (cairo_surface_subsurface_t *) params->src_surface;
     status = _cairo_ps_surface_emit_recording_surface (surface,
              sub->target,
              params->regions_id,
              &sub->extents,
              TRUE);
 } else {
     status = _cairo_ps_surface_emit_recording_surface (surface,
              params->src_surface,
              params->regions_id,
              params->src_op_extents,
              FALSE);
 }
    } else {
 params->is_image = TRUE;
 status = _cairo_ps_surface_emit_image (surface, mode, params);
    }

    if (mode == CAIRO_EMIT_SURFACE_ANALYZE) {
 unsigned char *data;
 unsigned long length;

 status = _cairo_pdf_operators_flush (&surface->pdf_operators);
 if (unlikely (status))
     return status;

 status = _cairo_memory_stream_destroy (surface->stream, &data, &length);
 free (data);
 surface->stream = old_stream;
 if (unlikely (status))
     return status;

 params->approx_size = length;
 _cairo_pdf_operators_set_stream (&surface->pdf_operators,
      surface->stream);
    }

  surface_emitted:

    return status;
}

static void
_cairo_ps_form_emit (void *entry, void *closure)
{
    cairo_ps_form_t *form = entry;
    cairo_ps_surface_t *surface = closure;
    cairo_emit_surface_params_t params;
    cairo_int_status_t status;
    cairo_output_stream_t *old_stream;

    params.src_surface = form->src_surface;
    params.regions_id = form->regions_id;
    params.op = CAIRO_OPERATOR_OVER;
    params.src_surface_extents = &form->src_surface_extents;
    params.src_surface_bounded = form->src_surface_bounded;
    params.src_op_extents = &form->required_extents;
    params.filter = form->filter;
    params.stencil_mask = FALSE;
    params.is_image = form->is_image;
    params.approx_size = 0;
    params.eod_count = 0;

    _cairo_output_stream_printf (surface->final_stream,
     "%%%%BeginResource: form cairoform-%d\n",
     form->id);

    _cairo_output_stream_printf (surface->final_stream,
     "/cairo_paint_form-%d",
     form->id);
    if (surface->ps_level == CAIRO_PS_LEVEL_3) {
 surface->paint_proc = FALSE;
 _cairo_output_stream_printf (surface->final_stream,
         "\n"
         "currentfile\n"
         "<< /Filter /SubFileDecode\n"
         "   /DecodeParms << /EODString (%s) /EODCount 0 >>\n"
         ">> /ReusableStreamDecode filter\n",
         SUBFILE_FILTER_EOD);
    } else {
 surface->paint_proc = TRUE;
 _cairo_output_stream_printf (surface->final_stream,
         " {\n");
    }
    _cairo_output_stream_printf (surface->final_stream,
     "5 dict begin\n");

    old_stream = surface->stream;
    surface->stream = surface->final_stream;
    _cairo_pdf_operators_set_stream (&surface->pdf_operators, surface->stream);
    status = _cairo_ps_surface_emit_surface (surface,
          CAIRO_EMIT_SURFACE_EMIT_FORM,
          ¶ms);
    status = _cairo_pdf_operators_flush (&surface->pdf_operators);
    surface->stream = old_stream;
    _cairo_pdf_operators_set_stream (&surface->pdf_operators, surface->stream);

    _cairo_output_stream_printf (surface->final_stream,
     "end\n");
    if (surface->ps_level == CAIRO_PS_LEVEL_3) {
 _cairo_output_stream_printf (surface->final_stream,
         "%s\n"
         "def\n",
         SUBFILE_FILTER_EOD);
    } else {
 _cairo_output_stream_printf (surface->final_stream,
         "} bind def\n");
    }

    _cairo_output_stream_printf (surface->final_stream,
     "\n"
     "/cairoform-%d\n"
     "<<\n"
     "  /FormType 1\n",
     form->id);

    if (form->is_image) {
 _cairo_output_stream_printf (surface->final_stream,
         "  /BBox [ 0 0 1 1 ]\n");
    } else {
 _cairo_output_stream_printf (surface->final_stream,
         "  /BBox [ %d %d %d %d ]\n",
         form->required_extents.x,
         form->required_extents.y,
         form->required_extents.x + form->required_extents.width,
         form->required_extents.y + form->required_extents.height);
    }

    _cairo_output_stream_printf (surface->final_stream,
     "  /Matrix [ 1 0 0 1 0 0 ]\n"
     "  /PaintProc { pop cairo_paint_form-%d",
     form->id);

    if (surface->ps_level == CAIRO_PS_LEVEL_3) {
 _cairo_output_stream_printf (surface->final_stream,
         " dup 0 setfileposition cvx exec");
    }
    _cairo_output_stream_printf (surface->final_stream,
     " } bind\n"
     ">>\n"
     "/Form defineresource pop\n");

    _cairo_output_stream_printf (surface->final_stream,
     "%%%%EndResource\n");
    if (status)
 surface->base.status = status;
}

static void
_path_fixed_init_rectangle (cairo_path_fixed_t *path,
       cairo_rectangle_int_t *rect)
{
    cairo_status_t status;

    _cairo_path_fixed_init (path);

    status = _cairo_path_fixed_move_to (path,
     _cairo_fixed_from_int (rect->x),
     _cairo_fixed_from_int (rect->y));
    assert (status == CAIRO_STATUS_SUCCESS);
    status = _cairo_path_fixed_rel_line_to (path,
         _cairo_fixed_from_int (rect->width),
         _cairo_fixed_from_int (0));
    assert (status == CAIRO_STATUS_SUCCESS);
    status = _cairo_path_fixed_rel_line_to (path,
         _cairo_fixed_from_int (0),
         _cairo_fixed_from_int (rect->height));
    assert (status == CAIRO_STATUS_SUCCESS);
    status = _cairo_path_fixed_rel_line_to (path,
         _cairo_fixed_from_int (-rect->width),
         _cairo_fixed_from_int (0));
    assert (status == CAIRO_STATUS_SUCCESS);

    status = _cairo_path_fixed_close_path (path);
    assert (status == CAIRO_STATUS_SUCCESS);
}

static cairo_status_t
_cairo_ps_surface_paint_surface (cairo_ps_surface_t     *surface,
     const cairo_pattern_t  *pattern,
     cairo_rectangle_int_t  *extents,
     cairo_operator_t  op,
     cairo_bool_t            stencil_mask)
{
    cairo_rectangle_int_t src_surface_extents;
    cairo_bool_t src_surface_bounded;
    cairo_rectangle_int_t src_op_extents;
    cairo_surface_t *source_surface;
    double x_offset, y_offset;
    cairo_status_t status;
    cairo_matrix_t cairo_p2d, ps_p2d;
    cairo_path_fixed_t path;
    cairo_emit_surface_params_t params;
    cairo_image_surface_t *image = NULL;
    unsigned int region_id = 0;

    status = _cairo_pdf_operators_flush (&surface->pdf_operators);
    if (unlikely (status))
 return status;

    if (pattern->type == CAIRO_PATTERN_TYPE_SURFACE) {
 cairo_surface_pattern_t *surface_pattern = (cairo_surface_pattern_t *) pattern;
 region_id = surface_pattern->region_array_id;
    }

    status = _cairo_ps_surface_acquire_source_surface_from_pattern (surface,
            pattern,
            extents,
            &src_surface_extents,
            &src_surface_bounded,
            &src_op_extents,
            &source_surface,
            &x_offset,
            &y_offset);
    if (unlikely (status))
 return status;

    if (pattern->extend == CAIRO_EXTEND_PAD &&
 pattern->type == CAIRO_PATTERN_TYPE_SURFACE &&
 ((cairo_surface_pattern_t *)pattern)->surface->type == CAIRO_SURFACE_TYPE_IMAGE) {
 cairo_image_surface_t *img;

 img = (cairo_image_surface_t *) source_surface;
 status = _cairo_ps_surface_create_padded_image_from_image (surface,
           img,
           &pattern->matrix,
           extents,
           &image,
           &src_surface_extents);
 if (unlikely (status))
     goto release_source;

 x_offset = src_surface_extents.x;
 y_offset = src_surface_extents.y;
    }

    _path_fixed_init_rectangle (&path, extents);
    status = _cairo_pdf_operators_clip (&surface->pdf_operators,
     &path,
     CAIRO_FILL_RULE_WINDING);
    _cairo_path_fixed_fini (&path);
    if (unlikely (status))
 goto release_source;

    cairo_p2d = pattern->matrix;

    if (surface->paginated_mode == CAIRO_PAGINATED_MODE_FALLBACK) {
 double x_scale = cairo_p2d.xx;
 double y_scale = cairo_p2d.yy;

 _cairo_output_stream_printf (surface->stream,
         "%% Fallback Image: x=%f y=%f w=%d h=%d ",
         -cairo_p2d.x0/x_scale,
         -cairo_p2d.y0/y_scale,
         (int)(src_surface_extents.width/x_scale),
         (int)(src_surface_extents.height/y_scale));
 if (x_scale == y_scale) {
     _cairo_output_stream_printf (surface->stream,
      "res=%fppi ",
      x_scale*72);
 } else {
     _cairo_output_stream_printf (surface->stream,
      "res=%fx%fppi ",
      x_scale*72,
      y_scale*72);
 }
 _cairo_output_stream_printf (surface->stream,
         "size=%ld\n",
         (long)src_surface_extents.width * src_surface_extents.height * 3);
    } else {
 if (op == CAIRO_OPERATOR_SOURCE) {
     _cairo_output_stream_printf (surface->stream,
      "%d g %d %d %d %d rectfill\n",
      surface->content == CAIRO_CONTENT_COLOR ? 0 : 1,
      surface->surface_extents.x,
      surface->surface_extents.y,
      surface->surface_extents.width,
      surface->surface_extents.height);
 }
    }

    status = cairo_matrix_invert (&cairo_p2d);
    /* cairo_pattern_set_matrix ensures the matrix is invertible */
    assert (status == CAIRO_STATUS_SUCCESS);

    ps_p2d = surface->cairo_to_ps;
    cairo_matrix_multiply (&ps_p2d, &cairo_p2d, &ps_p2d);
    cairo_matrix_translate (&ps_p2d, x_offset, y_offset);

    params.src_surface = image ? &image->base : source_surface;
    params.regions_id = image ? 0 : region_id;
    params.op = op;
    params.src_surface_extents = &src_surface_extents;
    params.src_surface_bounded = src_surface_bounded;
    params.src_op_extents = &src_op_extents;
    params.filter = pattern->filter;
    params.stencil_mask = stencil_mask;
    params.is_image = FALSE;
    params.approx_size = 0;

    status = _cairo_ps_surface_emit_surface (surface, CAIRO_EMIT_SURFACE_ANALYZE, ¶ms);
    if (unlikely (status))
 goto release_source;

    if (params.is_image) {
 cairo_matrix_translate (&ps_p2d, 0.0, src_surface_extents.height);
 cairo_matrix_scale (&ps_p2d, 1.0, -1.0);
 cairo_matrix_scale (&ps_p2d, src_surface_extents.width, src_surface_extents.height);
    }

    if (! _cairo_matrix_is_identity (&ps_p2d)) {
 _cairo_output_stream_printf (surface->stream, "[ ");
 _cairo_output_stream_print_matrix (surface->stream, &ps_p2d);
 _cairo_output_stream_printf (surface->stream, " ] concat\n");
    }

    status = _cairo_ps_surface_emit_surface (surface, CAIRO_EMIT_SURFACE_EMIT, ¶ms);

  release_source:
    if (image)
 cairo_surface_destroy (&image->base);

    _cairo_ps_surface_release_source_surface_from_pattern (surface, pattern, source_surface);

    return status;
}

static cairo_status_t
_cairo_ps_surface_emit_surface_pattern (cairo_ps_surface_t      *surface,
     cairo_pattern_t         *pattern,
     cairo_rectangle_int_t   *extents,
     cairo_operator_t  op)
{
    cairo_status_t status;
    double xstep, ystep;
    cairo_rectangle_int_t pattern_extents;
    cairo_bool_t bounded;
    cairo_matrix_t cairo_p2d, ps_p2d;
    cairo_bool_t old_paint_proc;
    double x_offset, y_offset;
    cairo_surface_t *source_surface;
    cairo_image_surface_t *image = NULL;
    cairo_rectangle_int_t src_op_extents;
    cairo_emit_surface_params_t params;
    cairo_extend_t extend = cairo_pattern_get_extend (pattern);
    unsigned int region_id = 0;

    cairo_p2d = pattern->matrix;
    status = cairo_matrix_invert (&cairo_p2d);
    /* cairo_pattern_set_matrix ensures the matrix is invertible */
    assert (status == CAIRO_STATUS_SUCCESS);

    if (pattern->type == CAIRO_PATTERN_TYPE_SURFACE) {
 cairo_surface_pattern_t *surface_pattern = (cairo_surface_pattern_t *) pattern;
 region_id = surface_pattern->region_array_id;
    }

    status = _cairo_ps_surface_acquire_source_surface_from_pattern (surface,
            pattern,
            extents,
            &pattern_extents,
            &bounded,
            &src_op_extents,
            &source_surface,
            &x_offset, &y_offset);
    if (unlikely (status))
 return status;

    if (extend == CAIRO_EXTEND_PAD) {
 cairo_image_surface_t *img;

 assert (source_surface->type == CAIRO_SURFACE_TYPE_IMAGE);
 img = (cairo_image_surface_t *) source_surface;
 status = _cairo_ps_surface_create_padded_image_from_image (surface,
           img,
           &pattern->matrix,
           extents,
           &image,
           &pattern_extents);
 if (unlikely (status))
     goto release_source;
    }
    if (unlikely (status))
 goto release_source;

    if (!bounded)
    {
 extend = CAIRO_EXTEND_NONE;
 _cairo_rectangle_intersect (&pattern_extents, &src_op_extents);
    }

    switch (extend) {
    case CAIRO_EXTEND_PAD:
    case CAIRO_EXTEND_NONE:
    {
 /* In PS/PDF, (as far as I can tell), all patterns are
 * repeating. So we support cairo's EXTEND_NONE semantics
 * by setting the repeat step size to a size large enough
 * to guarantee that no more than a single occurrence will
 * be visible.
 *
 * First, map the surface extents into pattern space (since
 * xstep and ystep are in pattern space).  Then use an upper
 * bound on the length of the diagonal of the pattern image
 * and the surface as repeat size.  This guarantees to never
 * repeat visibly.
 */
 double x1 = 0.0, y1 = 0.0;
 double x2 = surface->surface_extents.width;
 double y2 = surface->surface_extents.height;
 _cairo_matrix_transform_bounding_box (&pattern->matrix,
           &x1, &y1, &x2, &y2,
           NULL);

 /* Rather than computing precise bounds of the union, just
 * add the surface extents unconditionally. We only
 * required an answer that's large enough, we don't really
 * care if it's not as tight as possible.*/
 xstep = ystep = ceil ((x2 - x1) + (y2 - y1) +
         pattern_extents.width + pattern_extents.height);
 break;
    }
    case CAIRO_EXTEND_REPEAT:
 xstep = pattern_extents.width;
 ystep = pattern_extents.height;
 break;
    case CAIRO_EXTEND_REFLECT:
 xstep = pattern_extents.width*2;
 ystep = pattern_extents.height*2;
 break;
 /* All the rest (if any) should have been analyzed away, so these
 * cases should be unreachable. */
    default:
 ASSERT_NOT_REACHED;
 xstep = 0;
 ystep = 0;
    }

    _cairo_output_stream_printf (surface->stream,
     "/CairoPattern {\n"
     "q %d %d %d %d rectclip\n",
     pattern_extents.x, pattern_extents.y,
     pattern_extents.width, pattern_extents.height);

    if (extend == CAIRO_EXTEND_REPEAT || extend == CAIRO_EXTEND_REFLECT)
 src_op_extents = pattern_extents;

    old_paint_proc = surface->paint_proc;
    surface->paint_proc = TRUE;
    params.src_surface = image ? &image->base : source_surface;
    params.regions_id = image ? 0 : region_id;
    params.op = op;
    params.src_surface_extents = &pattern_extents;
    params.src_surface_bounded = bounded;
    params.src_op_extents = &src_op_extents;
    params.filter = pattern->filter;
    params.stencil_mask = FALSE;
    params.is_image = FALSE;
    params.approx_size = 0;
    status = _cairo_ps_surface_emit_surface (surface, CAIRO_EMIT_SURFACE_ANALYZE, ¶ms);
    if (unlikely (status))
 goto release_source;

    if (params.is_image) {
 _cairo_output_stream_printf (surface->stream,
         "[ %d 0 0 %d 0 0 ] concat\n",
         pattern_extents.width, pattern_extents.height);
    }

    if (op == CAIRO_OPERATOR_SOURCE) {
 _cairo_output_stream_printf (surface->stream,
         "%d g %d %d %f %f rectfill\n",
         surface->content == CAIRO_CONTENT_COLOR ? 0 : 1,
         pattern_extents.x, pattern_extents.y,
         xstep, ystep);
    }

    status = _cairo_ps_surface_emit_surface (surface, CAIRO_EMIT_SURFACE_EMIT, ¶ms);
    if (unlikely (status))
 goto release_source;

    _cairo_output_stream_printf (surface->stream,
     " Q } bind def\n");

    _cairo_output_stream_printf (surface->stream,
     "<< /PatternType 1\n"
     "   /PaintType 1\n"
     "   /TilingType 1\n");
    _cairo_output_stream_printf (surface->stream,
     "   /XStep %f /YStep %f\n",
     xstep, ystep);

    if (extend == CAIRO_EXTEND_REFLECT) {
 cairo_matrix_t mat;

 _cairo_output_stream_printf (surface->stream,
         "   /BBox [%d %d %d %d]\n"
         "   /PaintProc {\n"
         "      pop CairoPattern\n",
         pattern_extents.x,
         pattern_extents.y,
         pattern_extents.x + pattern_extents.width*2,
         pattern_extents.y + pattern_extents.height*2);

 cairo_matrix_init_translate (&mat, pattern_extents.x, pattern_extents.y);
 cairo_matrix_scale (&mat, -1, 1);
 cairo_matrix_translate (&mat, -2*pattern_extents.width, 0);
 cairo_matrix_translate (&mat, -pattern_extents.x, -pattern_extents.y);
 _cairo_output_stream_printf (surface->stream, "      q [");
 _cairo_output_stream_print_matrix (surface->stream, &mat);
 _cairo_output_stream_printf (surface->stream, "] concat CairoPattern Q\n");

 cairo_matrix_init_translate (&mat, pattern_extents.x, pattern_extents.y);
 cairo_matrix_scale (&mat, 1, -1);
 cairo_matrix_translate (&mat, 0, -2*pattern_extents.height);
 cairo_matrix_translate (&mat, -pattern_extents.x, -pattern_extents.y);
 _cairo_output_stream_printf (surface->stream, "      q [");
 _cairo_output_stream_print_matrix (surface->stream, &mat);
 _cairo_output_stream_printf (surface->stream, "] concat CairoPattern Q\n");

 cairo_matrix_init_translate (&mat, pattern_extents.x, pattern_extents.y);
 cairo_matrix_scale (&mat, -1, -1);
 cairo_matrix_translate (&mat, -2*pattern_extents.width, -2*pattern_extents.height);
 cairo_matrix_translate (&mat, -pattern_extents.x, -pattern_extents.y);
 _cairo_output_stream_printf (surface->stream, "      q [");
 _cairo_output_stream_print_matrix (surface->stream, &mat);
 _cairo_output_stream_printf (surface->stream, "] concat CairoPattern Q\n");

 _cairo_output_stream_printf (surface->stream, "   } bind\n");
    } else {
 if (op == CAIRO_OPERATOR_SOURCE) {
     _cairo_output_stream_printf (surface->stream,
      "   /BBox [0 0 %f %f]\n",
      xstep, ystep);
 } else {
     _cairo_output_stream_printf (surface->stream,
      "   /BBox [%d %d %d %d]\n",
      pattern_extents.x,
      pattern_extents.y,
      pattern_extents.x + pattern_extents.width,
      pattern_extents.y + pattern_extents.height);
 }
 _cairo_output_stream_printf (surface->stream,
         "   /PaintProc { pop CairoPattern }\n");
    }

    _cairo_output_stream_printf (surface->stream,
     ">>\n");

    cairo_p2d = pattern->matrix;
    status = cairo_matrix_invert (&cairo_p2d);
    /* cairo_pattern_set_matrix ensures the matrix is invertible */
    assert (status == CAIRO_STATUS_SUCCESS);

    cairo_matrix_init_identity (&ps_p2d);
    cairo_matrix_multiply (&ps_p2d, &cairo_p2d, &ps_p2d);
    cairo_matrix_translate (&ps_p2d, x_offset, y_offset);
    if (((cairo_surface_pattern_t *)pattern)->surface->type != CAIRO_SURFACE_TYPE_RECORDING)
    {
 cairo_matrix_translate (&ps_p2d, 0.0, pattern_extents.height);
 cairo_matrix_scale (&ps_p2d, 1.0, -1.0);
    }

    _cairo_output_stream_printf (surface->stream, "[ ");
    _cairo_output_stream_print_matrix (surface->stream, &ps_p2d);
    _cairo_output_stream_printf (surface->stream,
     " ]\n"
     "makepattern setpattern\n");

    surface->paint_proc = old_paint_proc;

  release_source:
    if (image)
 cairo_surface_destroy (&image->base);

    _cairo_ps_surface_release_source_surface_from_pattern (surface, pattern, source_surface);

    return status;
}

typedef struct _cairo_ps_color_stop {
    double offset;
    double color[4];
} cairo_ps_color_stop_t;

static void
_cairo_ps_surface_emit_linear_colorgradient (cairo_ps_surface_t     *surface,
          cairo_ps_color_stop_t  *stop1,
          cairo_ps_color_stop_t  *stop2)
{
    _cairo_output_stream_printf (surface->stream,
     "   << /FunctionType 2\n"
     "      /Domain [ 0 1 ]\n"
     "      /C0 [ %f %f %f ]\n"
     "      /C1 [ %f %f %f ]\n"
     "      /N 1\n"
     "   >>\n",
     stop1->color[0],
     stop1->color[1],
     stop1->color[2],
     stop2->color[0],
     stop2->color[1],
     stop2->color[2]);
}

static void
_cairo_ps_surface_emit_stitched_colorgradient (cairo_ps_surface_t    *surface,
            unsigned int        n_stops,
            cairo_ps_color_stop_t  stops[])
{
    unsigned int i;

    _cairo_output_stream_printf (surface->stream,
     "<< /FunctionType 3\n"
     "   /Domain [ 0 1 ]\n"
     "   /Functions [\n");
    for (i = 0; i < n_stops - 1; i++)
 _cairo_ps_surface_emit_linear_colorgradient (surface, &stops[i], &stops[i+1]);

    _cairo_output_stream_printf (surface->stream, "   ]\n");

    _cairo_output_stream_printf (surface->stream, "   /Bounds [ ");
    for (i = 1; i < n_stops-1; i++)
 _cairo_output_stream_printf (surface->stream, "%f ", stops[i].offset);
    _cairo_output_stream_printf (surface->stream, "]\n");

    _cairo_output_stream_printf (surface->stream, "   /Encode [ 1 1 %d { pop 0 1 } for ]\n",
     n_stops - 1);

    _cairo_output_stream_printf (surface->stream, ">>\n");
}

static void
calc_gradient_color (cairo_ps_color_stop_t *new_stop,
       cairo_ps_color_stop_t *stop1,
       cairo_ps_color_stop_t *stop2)
{
    int i;
    double offset = stop1->offset / (stop1->offset + 1.0 - stop2->offset);

    for (i = 0; i < 4; i++)
 new_stop->color[i] = stop1->color[i] + offset*(stop2->color[i] - stop1->color[i]);
}

#define COLOR_STOP_EPSILON 1e-6

static cairo_status_t
_cairo_ps_surface_emit_pattern_stops (cairo_ps_surface_t       *surface,
          cairo_gradient_pattern_t *pattern)
{
    cairo_ps_color_stop_t *allstops, *stops;
    unsigned int i, n_stops;

    allstops = _cairo_malloc_ab ((pattern->n_stops + 2), sizeof (cairo_ps_color_stop_t));
    if (unlikely (allstops == NULL))
 return _cairo_error (CAIRO_STATUS_NO_MEMORY);

    stops = &allstops[1];
    n_stops = pattern->n_stops;

    for (i = 0; i < n_stops; i++) {
 cairo_gradient_stop_t *stop = &pattern->stops[i];

 stops[i].color[0] = stop->color.red;
 stops[i].color[1] = stop->color.green;
 stops[i].color[2] = stop->color.blue;
 stops[i].color[3] = stop->color.alpha;
 stops[i].offset = pattern->stops[i].offset;
    }

    if (pattern->base.extend == CAIRO_EXTEND_REPEAT ||
 pattern->base.extend == CAIRO_EXTEND_REFLECT)
    {
 if (stops[0].offset > COLOR_STOP_EPSILON) {
     if (pattern->base.extend == CAIRO_EXTEND_REFLECT)
  memcpy (allstops, stops, sizeof (cairo_ps_color_stop_t));
     else
  calc_gradient_color (&allstops[0], &stops[0], &stops[n_stops-1]);
     stops = allstops;
     n_stops++;
 }
 stops[0].offset = 0.0;

 if (stops[n_stops-1].offset < 1.0 - COLOR_STOP_EPSILON) {
     if (pattern->base.extend == CAIRO_EXTEND_REFLECT) {
  memcpy (&stops[n_stops],
   &stops[n_stops - 1],
   sizeof (cairo_ps_color_stop_t));
     } else {
  calc_gradient_color (&stops[n_stops], &stops[0], &stops[n_stops-1]);
     }
     n_stops++;
 }
 stops[n_stops-1].offset = 1.0;
    }

    for (i = 0; i < n_stops; i++) {
 double red, green, blue;
 cairo_color_t color;

 _cairo_color_init_rgba (&color,
    stops[i].color[0],
    stops[i].color[1],
    stops[i].color[2],
    stops[i].color[3]);
 _cairo_ps_surface_flatten_transparency (surface, &color,
      &red, &green, &blue);
 stops[i].color[0] = red;
 stops[i].color[1] = green;
 stops[i].color[2] = blue;
    }

    _cairo_output_stream_printf (surface->stream,
     "/CairoFunction\n");
    if (stops[0].offset == stops[n_stops - 1].offset) {
 /*
 * The first and the last stops have the same offset, but we
 * don't want a function with an empty domain, because that
 * would provoke underdefined behaviour from rasterisers.
 * This can only happen with EXTEND_PAD, because EXTEND_NONE
 * is optimised into a clear pattern in cairo-gstate, and
 * REFLECT/REPEAT are always transformed to have the first
 * stop at t=0 and the last stop at t=1.  Thus we want a step
 * function going from the first color to the last one.
 *
 * This can be accomplished by stitching three functions:
 *  - a constant first color function,
 *  - a step from the first color to the last color (with empty domain)
 *  - a constant last color function
 */
 cairo_ps_color_stop_t pad_stops[4];

 assert (pattern->base.extend == CAIRO_EXTEND_PAD);

 pad_stops[0] = pad_stops[1] = stops[0];
 pad_stops[2] = pad_stops[3] = stops[n_stops - 1];

 pad_stops[0].offset = 0;
 pad_stops[3].offset = 1;

 _cairo_ps_surface_emit_stitched_colorgradient (surface, 4, pad_stops);
    } else if (n_stops == 2) {
 /* no need for stitched function */
 _cairo_ps_surface_emit_linear_colorgradient (surface, &stops[0], &stops[1]);
    } else {
 /* multiple stops: stitch. XXX possible optimization: regularly spaced
 * stops do not require stitching. XXX */
 _cairo_ps_surface_emit_stitched_colorgradient (surface, n_stops, stops);
    }
    _cairo_output_stream_printf (surface->stream,
     "def\n");

    free (allstops);

    return CAIRO_STATUS_SUCCESS;
}

static cairo_status_t
_cairo_ps_surface_emit_repeating_function (cairo_ps_surface_t       *surface,
        cairo_gradient_pattern_t *pattern,
        int                       begin,
        int                       end)
{
    _cairo_output_stream_printf (surface->stream,
     "/CairoFunction\n"
     "<< /FunctionType 3\n"
     "   /Domain [ %d %d ]\n"
     "   /Functions [ %d {CairoFunction} repeat ]\n"
     "   /Bounds [ %d 1 %d {} for ]\n",
     begin,
                                 end,
     end - begin,
     begin + 1,
     end - 1);

    if (pattern->base.extend == CAIRO_EXTEND_REFLECT) {
 _cairo_output_stream_printf (surface->stream, "   /Encode [ %d 1 %d { 2 mod 0 eq {0 1} {1 0} ifelse } for ]\n",
         begin,
         end - 1);
    } else {
 _cairo_output_stream_printf (surface->stream, "   /Encode [ %d 1 %d { pop 0 1 } for ]\n",
         begin,
         end - 1);
    }

    _cairo_output_stream_printf (surface->stream, ">> def\n");

    return CAIRO_STATUS_SUCCESS;
}

static cairo_status_t
_cairo_ps_surface_emit_gradient (cairo_ps_surface_t       *surface,
     cairo_gradient_pattern_t *pattern,
     cairo_bool_t              is_ps_pattern)
{
    cairo_matrix_t pat_to_ps;
    cairo_circle_double_t start, end;
    double domain[2];
    cairo_status_t status;

    assert (pattern->n_stops != 0);

    status = _cairo_ps_surface_emit_pattern_stops (surface, pattern);
    if (unlikely (status))
 return status;

    pat_to_ps = pattern->base.matrix;
    status = cairo_matrix_invert (&pat_to_ps);
    /* cairo_pattern_set_matrix ensures the matrix is invertible */
    assert (status == CAIRO_STATUS_SUCCESS);
    cairo_matrix_multiply (&pat_to_ps, &pat_to_ps, &surface->cairo_to_ps);

    if (pattern->base.extend == CAIRO_EXTEND_REPEAT ||
 pattern->base.extend == CAIRO_EXTEND_REFLECT)
    {
 double bounds_x1, bounds_x2, bounds_y1, bounds_y2;
 double x_scale, y_scale, tolerance;

 /* TODO: use tighter extents */
 bounds_x1 = 0;
 bounds_y1 = 0;
 bounds_x2 = surface->width;
 bounds_y2 = surface->height;
 _cairo_matrix_transform_bounding_box (&pattern->base.matrix,
           &bounds_x1, &bounds_y1,
           &bounds_x2, &bounds_y2,
           NULL);

 x_scale = surface->base.x_resolution / surface->base.x_fallback_resolution;
 y_scale = surface->base.y_resolution / surface->base.y_fallback_resolution;

 tolerance = fabs (_cairo_matrix_compute_determinant (&pattern->base.matrix));
 tolerance /= _cairo_matrix_transformed_circle_major_axis (&pattern->base.matrix, 1);
 tolerance *= MIN (x_scale, y_scale);

 _cairo_gradient_pattern_box_to_parameter (pattern,
        bounds_x1, bounds_y1,
        bounds_x2, bounds_y2,
        tolerance, domain);
    } else if (pattern->stops[0].offset == pattern->stops[pattern->n_stops - 1].offset) {
 /*
 * If the first and the last stop offset are the same, then
 * the color function is a step function.
 * _cairo_ps_surface_emit_pattern_stops emits it as a stitched
 * function no matter how many stops the pattern has.  The
 * domain of the stitched function will be [0 1] in this case.
 *
 * This is done to avoid emitting degenerate gradients for
 * EXTEND_PAD patterns having a step color function.
 */
 domain[0] = 0.0;
 domain[1] = 1.0;

 assert (pattern->base.extend == CAIRO_EXTEND_PAD);
    } else {
 domain[0] = pattern->stops[0].offset;
 domain[1] = pattern->stops[pattern->n_stops - 1].offset;
    }

    /* PS requires the first and last stop to be the same as the
     * extreme coordinates. For repeating patterns this moves the
     * extreme coordinates out to the begin/end of the repeating
     * function. For non repeating patterns this may move the extreme
     * coordinates in if there are not stops at offset 0 and 1. */
    _cairo_gradient_pattern_interpolate (pattern, domain[0], &start);
    _cairo_gradient_pattern_interpolate (pattern, domain[1], &end);

    if (pattern->base.extend == CAIRO_EXTEND_REPEAT ||
 pattern->base.extend == CAIRO_EXTEND_REFLECT)
    {
 int repeat_begin, repeat_end;

 repeat_begin = floor (domain[0]);
 repeat_end = ceil (domain[1]);

 status = _cairo_ps_surface_emit_repeating_function (surface,
           pattern,
           repeat_begin,
           repeat_end);
 if (unlikely (status))
     return status;
    } else if (pattern->n_stops <= 2) {
 /* For EXTEND_NONE and EXTEND_PAD if there are only two stops a
 * Type 2 function is used by itself without a stitching
 * function. Type 2 functions always have the domain [0 1] */
 domain[0] = 0.0;
 domain[1] = 1.0;
    }

    if (is_ps_pattern) {
 _cairo_output_stream_printf (surface->stream,
         "<< /PatternType 2\n"
         "   /Shading\n");
    }

    if (pattern->base.type == CAIRO_PATTERN_TYPE_LINEAR) {
 _cairo_output_stream_printf (surface->stream,
         "   << /ShadingType 2\n"
         "      /ColorSpace /DeviceRGB\n"
         "      /Coords [ %f %f %f %f ]\n",
         start.center.x, start.center.y,
         end.center.x, end.center.y);
    } else {
 _cairo_output_stream_printf (surface->stream,
         "   << /ShadingType 3\n"
         "      /ColorSpace /DeviceRGB\n"
         "      /Coords [ %f %f %f %f %f %f ]\n",
         start.center.x, start.center.y,
         MAX (start.radius, 0),
         end.center.x, end.center.y,
         MAX (end.radius, 0));
    }

    if (pattern->base.extend != CAIRO_EXTEND_NONE) {
 _cairo_output_stream_printf (surface->stream,
                                     "      /Extend [ true true ]\n");
    } else {
 _cairo_output_stream_printf (surface->stream,
                                     "      /Extend [ false false ]\n");
    }

    if (domain[0] == 0.0 && domain[1] == 1.0) {
 _cairo_output_stream_printf (surface->stream,
         "      /Function CairoFunction\n");
    } else {
 _cairo_output_stream_printf (surface->stream,
         "      /Function <<\n"
         "         /FunctionType 3\n"
         "         /Domain [ 0 1 ]\n"
         "         /Bounds [ ]\n"
         "         /Encode [ %f %f ]\n"
         "         /Functions [ CairoFunction ]\n"
         "      >>\n",
         domain[0], domain[1]);
    }

    _cairo_output_stream_printf (surface->stream,
     "   >>\n");

    if (is_ps_pattern) {
 _cairo_output_stream_printf (surface->stream,
         ">>\n"
         "[ ");
    _cairo_output_stream_print_matrix (surface->stream, &pat_to_ps);
    _cairo_output_stream_printf (surface->stream, " ]\n"
     "makepattern setpattern\n");
    } else {
 _cairo_output_stream_printf (surface->stream,
         "shfill\n");
    }

    return status;
}

static cairo_status_t
_cairo_ps_surface_emit_mesh_pattern (cairo_ps_surface_t     *surface,
         cairo_mesh_pattern_t   *pattern,
         cairo_bool_t            is_ps_pattern)
{
    cairo_matrix_t pat_to_ps;
    cairo_status_t status;
    cairo_pdf_shading_t shading;
    int i;

    if (_cairo_array_num_elements (&pattern->patches) == 0)
        return CAIRO_INT_STATUS_NOTHING_TO_DO;

    pat_to_ps = pattern->base.matrix;
    status = cairo_matrix_invert (&pat_to_ps);
    /* cairo_pattern_set_matrix ensures the matrix is invertible */
    assert (status == CAIRO_STATUS_SUCCESS);

    cairo_matrix_multiply (&pat_to_ps, &pat_to_ps, &surface->cairo_to_ps);

    status = _cairo_pdf_shading_init_color (&shading, pattern);
    if (unlikely (status))
 return status;

    _cairo_output_stream_printf (surface->stream,
     "currentfile\n"
     "/ASCII85Decode filter /FlateDecode filter /ReusableStreamDecode filter\n");

    status = _cairo_ps_surface_emit_base85_string (surface,
         shading.data,
         shading.data_length,
         CAIRO_PS_COMPRESS_DEFLATE,
         FALSE);
    if (status)
 return status;

    _cairo_output_stream_printf (surface->stream,
     "\n"
     "/CairoData exch def\n");

    if (is_ps_pattern) {
 _cairo_output_stream_printf (surface->stream,
         "<< /PatternType 2\n"
         "   /Shading\n");
    }

    _cairo_output_stream_printf (surface->stream,
     "   << /ShadingType %d\n"
     "      /ColorSpace /DeviceRGB\n"
     "      /DataSource CairoData\n"
     "      /BitsPerCoordinate %d\n"
     "      /BitsPerComponent %d\n"
     "      /BitsPerFlag %d\n"
     "      /Decode [",
     shading.shading_type,
     shading.bits_per_coordinate,
     shading.bits_per_component,
     shading.bits_per_flag);

    for (i = 0; i < shading.decode_array_length; i++)
 _cairo_output_stream_printf (surface->stream, "%f ", shading.decode_array[i]);

    _cairo_output_stream_printf (surface->stream,
     "]\n"
     "   >>\n");

    if (is_ps_pattern) {
 _cairo_output_stream_printf (surface->stream,
         ">>\n"
         "[ \n");
 _cairo_output_stream_print_matrix (surface->stream, &pat_to_ps);
 _cairo_output_stream_printf (surface->stream,
         " ]\n"
         "makepattern\n"
         "setpattern\n");
    } else {
 _cairo_output_stream_printf (surface->stream, "shfill\n");
    }

    _cairo_output_stream_printf (surface->stream,
     "currentdict /CairoData undef\n");

    _cairo_pdf_shading_fini (&shading);

    return status;
}

static cairo_status_t
_cairo_ps_surface_emit_pattern (cairo_ps_surface_t *surface,
    const cairo_pattern_t *pattern,
    cairo_rectangle_int_t *extents,
    cairo_operator_t       op)
{
    cairo_status_t status;

    if (pattern->type == CAIRO_PATTERN_TYPE_SOLID) {
 cairo_solid_pattern_t *solid = (cairo_solid_pattern_t *) pattern;

 if (surface->current_pattern_is_solid_color == FALSE ||
     ! _cairo_color_equal (&surface->current_color, &solid->color))
 {
     status = _cairo_pdf_operators_flush (&surface->pdf_operators);
     if (unlikely (status))
  return status;

     _cairo_ps_surface_emit_solid_pattern (surface, (cairo_solid_pattern_t *) pattern);

     surface->current_pattern_is_solid_color = TRUE;
     surface->current_color = solid->color;
 }

 return CAIRO_STATUS_SUCCESS;
    }

    surface->current_pattern_is_solid_color = FALSE;
    status = _cairo_pdf_operators_flush (&surface->pdf_operators);
    if (unlikely (status))
     return status;

    switch (pattern->type) {
    case CAIRO_PATTERN_TYPE_SOLID:

 _cairo_ps_surface_emit_solid_pattern (surface, (cairo_solid_pattern_t *) pattern);
 break;

    case CAIRO_PATTERN_TYPE_SURFACE:
    case CAIRO_PATTERN_TYPE_RASTER_SOURCE:
 status = _cairo_ps_surface_emit_surface_pattern (surface,
        (cairo_pattern_t *)pattern,
        extents,
        op);
 if (unlikely (status))
     return status;
 break;

    case CAIRO_PATTERN_TYPE_LINEAR:
    case CAIRO_PATTERN_TYPE_RADIAL:
 status = _cairo_ps_surface_emit_gradient (surface,
        (cairo_gradient_pattern_t *) pattern,
        TRUE);
 if (unlikely (status))
     return status;
 break;

    case CAIRO_PATTERN_TYPE_MESH:
 status = _cairo_ps_surface_emit_mesh_pattern (surface,
            (cairo_mesh_pattern_t *) pattern,
            TRUE);
 if (unlikely (status))
     return status;
 break;
    }

    return CAIRO_STATUS_SUCCESS;
}

static cairo_status_t
_cairo_ps_surface_paint_gradient (cairo_ps_surface_t          *surface,
      const cairo_pattern_t       *source,
      const cairo_rectangle_int_t *extents)
{
    cairo_matrix_t pat_to_ps;
    cairo_status_t status;

    pat_to_ps = source->matrix;
    status = cairo_matrix_invert (&pat_to_ps);
    /* cairo_pattern_set_matrix ensures the matrix is invertible */
    assert (status == CAIRO_STATUS_SUCCESS);
    cairo_matrix_multiply (&pat_to_ps, &pat_to_ps, &surface->cairo_to_ps);

    if (! _cairo_matrix_is_identity (&pat_to_ps)) {
 _cairo_output_stream_printf (surface->stream, "[");
 _cairo_output_stream_print_matrix (surface->stream, &pat_to_ps);
 _cairo_output_stream_printf (surface->stream, "] concat\n");
    }

    if (source->type == CAIRO_PATTERN_TYPE_MESH) {
 status = _cairo_ps_surface_emit_mesh_pattern (surface,
            (cairo_mesh_pattern_t *)source,
            FALSE);
 if (unlikely (status))
     return status;
    } else {
 status = _cairo_ps_surface_emit_gradient (surface,
        (cairo_gradient_pattern_t *)source,
        FALSE);
 if (unlikely (status))
     return status;
    }

    return status;
}

static cairo_status_t
_cairo_ps_surface_paint_pattern (cairo_ps_surface_t           *surface,
     const cairo_pattern_t        *source,
     cairo_rectangle_int_t        *extents,
     cairo_operator_t              op,
     cairo_bool_t                  stencil_mask)
{
    switch (source->type) {
    case CAIRO_PATTERN_TYPE_SURFACE:
    case CAIRO_PATTERN_TYPE_RASTER_SOURCE:
       return _cairo_ps_surface_paint_surface (surface,
                                               source,
                                               extents,
                                               op,
            stencil_mask);

    case CAIRO_PATTERN_TYPE_LINEAR:
    case CAIRO_PATTERN_TYPE_RADIAL:
    case CAIRO_PATTERN_TYPE_MESH:
 return _cairo_ps_surface_paint_gradient (surface,
       source,
       extents);

    case CAIRO_PATTERN_TYPE_SOLID:
    default:
       ASSERT_NOT_REACHED;
       return CAIRO_STATUS_SUCCESS;
    }
}

static cairo_bool_t
_can_paint_pattern (const cairo_pattern_t *pattern)
{
    switch (pattern->type) {
    case CAIRO_PATTERN_TYPE_SOLID:
 return FALSE;

    case CAIRO_PATTERN_TYPE_SURFACE:
    case CAIRO_PATTERN_TYPE_RASTER_SOURCE:
 return (pattern->extend == CAIRO_EXTEND_NONE ||
  pattern->extend == CAIRO_EXTEND_PAD);

    case CAIRO_PATTERN_TYPE_LINEAR:
    case CAIRO_PATTERN_TYPE_RADIAL:
    case CAIRO_PATTERN_TYPE_MESH:
 return TRUE;

    default:
 ASSERT_NOT_REACHED;
 return FALSE;
    }
}

static cairo_bool_t
_cairo_ps_surface_get_extents (void         *abstract_surface,
          cairo_rectangle_int_t   *rectangle)
{
    cairo_ps_surface_t *surface = abstract_surface;

    if (surface->surface_bounded)
 *rectangle = surface->surface_extents;

    return surface->surface_bounded;
}

static void
_cairo_ps_surface_get_font_options (void                  *abstract_surface,
        cairo_font_options_t  *options)
{
    _cairo_font_options_init_default (options);

    cairo_font_options_set_hint_style (options, CAIRO_HINT_STYLE_NONE);
    cairo_font_options_set_hint_metrics (options, CAIRO_HINT_METRICS_OFF);
    cairo_font_options_set_antialias (options, CAIRO_ANTIALIAS_GRAY);
    _cairo_font_options_set_round_glyph_positions (options, CAIRO_ROUND_GLYPH_POS_OFF);
}

static cairo_int_status_t
_cairo_ps_surface_set_clip (cairo_ps_surface_t *surface,
       cairo_composite_rectangles_t *composite)
{
    cairo_clip_t *clip = composite->clip;

    if (_cairo_composite_rectangles_can_reduce_clip (composite, clip))
 clip = NULL;

    if (clip == NULL) {
 if (_cairo_composite_rectangles_can_reduce_clip (composite,
        surface->clipper.clip))
     return CAIRO_STATUS_SUCCESS;
    }

    return _cairo_surface_clipper_set_clip (&surface->clipper, clip);
}

static cairo_int_status_t
_cairo_ps_surface_paint (void   *abstract_surface,
    cairo_operator_t  op,
    const cairo_pattern_t *source,
    const cairo_clip_t *clip)
{
    cairo_ps_surface_t *surface = abstract_surface;
    cairo_output_stream_t *stream = surface->stream;
    cairo_composite_rectangles_t extents;
    cairo_status_t status;

    status = _cairo_composite_rectangles_init_for_paint (&extents,
        &surface->base,
        op, source, clip);
    if (unlikely (status))
 return status;

    if (surface->paginated_mode == CAIRO_PAGINATED_MODE_ANALYZE) {
 status = _cairo_ps_surface_analyze_operation (surface, op, source, NULL, &extents.bounded);
 goto cleanup_composite;
    }

    assert (_cairo_ps_surface_operation_supported (surface, op, source, NULL, &extents.bounded));

#if DEBUG_PS
    _cairo_output_stream_printf (stream,
     "%% _cairo_ps_surface_paint\n");
#endif

    status = _cairo_ps_surface_set_clip (surface, &extents);
    if (unlikely (status))
 goto cleanup_composite;

    if (_can_paint_pattern (source)) {
 status = _cairo_pdf_operators_flush (&surface->pdf_operators);
 if (unlikely (status))
     goto cleanup_composite;

 _cairo_output_stream_printf (stream, "q\n");
 status = _cairo_ps_surface_paint_pattern (surface,
        source,
        &extents.bounded, op, FALSE);
 if (unlikely (status))
     goto cleanup_composite;

 _cairo_output_stream_printf (stream, "Q\n");
    } else {
 status = _cairo_ps_surface_emit_pattern (surface, source, &extents.bounded, op);
 if (unlikely (status))
     goto cleanup_composite;

 _cairo_output_stream_printf (stream, "%d %d %d %d rectfill\n",
         surface->surface_extents.x,
         surface->surface_extents.y,
         surface->surface_extents.width,
         surface->surface_extents.height);
    }

cleanup_composite:
    _cairo_composite_rectangles_fini (&extents);
    return status;
}

static cairo_int_status_t
_cairo_ps_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_ps_surface_t *surface = abstract_surface;
    cairo_output_stream_t *stream = surface->stream;
    cairo_composite_rectangles_t extents;
    cairo_status_t status;

    status = _cairo_composite_rectangles_init_for_mask (&extents,
       &surface->base,
       op, source, mask, clip);
    if (unlikely (status))
 return status;

    if (surface->paginated_mode == CAIRO_PAGINATED_MODE_ANALYZE) {
 status = _cairo_ps_surface_analyze_operation (surface, op, source, mask, &extents.bounded);
 goto cleanup_composite;
    }

    assert (_cairo_ps_surface_operation_supported (surface, op, source, mask, &extents.bounded));

#if DEBUG_PS
    _cairo_output_stream_printf (stream,
     "%% _cairo_ps_surface_mask\n");
#endif

    status = _cairo_ps_surface_set_clip (surface, &extents);
    if (unlikely (status))
 goto cleanup_composite;

    status = _cairo_ps_surface_emit_pattern (surface, source, &extents.bounded, op);
    if (unlikely (status))
 goto cleanup_composite;

    _cairo_output_stream_printf (stream, "q\n");
    status = _cairo_ps_surface_paint_pattern (surface,
           mask,
           &extents.bounded, op, TRUE);
    if (unlikely (status))
 goto cleanup_composite;

    _cairo_output_stream_printf (stream, "Q\n");

cleanup_composite:
    _cairo_composite_rectangles_fini (&extents);
    return status;
}

static cairo_int_status_t
_cairo_ps_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_ps_surface_t *surface = abstract_surface;
    cairo_composite_rectangles_t extents;
    cairo_int_status_t status;

    status = _cairo_composite_rectangles_init_for_stroke (&extents,
         &surface->base,
         op, source,
         path, style, ctm,
         clip);
    if (unlikely (status))
 return status;

    /* use the more accurate extents */
    {
 cairo_rectangle_int_t r;
 cairo_box_t b;

 status = _cairo_path_fixed_stroke_extents (path, style,
         ctm, ctm_inverse,
         tolerance,
         &r);
 if (unlikely (status))
     goto cleanup_composite;

 _cairo_box_from_rectangle (&b, &r);
 status = _cairo_composite_rectangles_intersect_mask_extents (&extents, &b);
 if (unlikely (status))
     goto cleanup_composite;
    }

    if (surface->paginated_mode == CAIRO_PAGINATED_MODE_ANALYZE) {
 status = _cairo_ps_surface_analyze_operation (surface, op, source, NULL, &extents.bounded);
 goto cleanup_composite;
    }

    assert (_cairo_ps_surface_operation_supported (surface, op, source, NULL, &extents.bounded));

#if DEBUG_PS
    _cairo_output_stream_printf (surface->stream,
     "%% _cairo_ps_surface_stroke\n");
#endif

    status = _cairo_ps_surface_set_clip (surface, &extents);
    if (unlikely (status))
 goto cleanup_composite;

    status = _cairo_ps_surface_emit_pattern (surface, source, &extents.bounded, op);
    if (unlikely (status))
 goto cleanup_composite;

    status = _cairo_pdf_operators_stroke (&surface->pdf_operators,
       path,
       style,
       ctm,
       ctm_inverse);

cleanup_composite:
    _cairo_composite_rectangles_fini (&extents);
    return status;
}

static cairo_int_status_t
_cairo_ps_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_ps_surface_t *surface = abstract_surface;
    cairo_composite_rectangles_t extents;
    cairo_int_status_t status;

    status = _cairo_composite_rectangles_init_for_fill (&extents,
       &surface->base,
       op, source, path,
       clip);
    if (unlikely (status))
 return status;

    /* use the more accurate extents */
    {
 cairo_rectangle_int_t r;
 cairo_box_t b;

 _cairo_path_fixed_fill_extents (path,
     fill_rule,
     tolerance,
     &r);

 _cairo_box_from_rectangle (&b, &r);
 status = _cairo_composite_rectangles_intersect_mask_extents (&extents, &b);
 if (unlikely (status))
     goto cleanup_composite;
    }

    if (surface->paginated_mode == CAIRO_PAGINATED_MODE_ANALYZE) {
 status = _cairo_ps_surface_analyze_operation (surface, op, source, NULL, &extents.bounded);
 goto cleanup_composite;
    }

    assert (_cairo_ps_surface_operation_supported (surface, op, source, NULL, &extents.bounded));

#if DEBUG_PS
    _cairo_output_stream_printf (surface->stream,
     "%% _cairo_ps_surface_fill\n");
#endif

    status = _cairo_pdf_operators_flush (&surface->pdf_operators);
    if (unlikely (status))
 goto cleanup_composite;

    status = _cairo_ps_surface_set_clip (surface, &extents);
    if (unlikely (status))
 goto cleanup_composite;

    if (_can_paint_pattern (source)) {
 _cairo_output_stream_printf (surface->stream, "q\n");

 status =  _cairo_pdf_operators_clip (&surface->pdf_operators,
          path,
          fill_rule);
 if (unlikely (status))
     goto cleanup_composite;

 status = _cairo_ps_surface_paint_pattern (surface,
        source,
        &extents.bounded, op, FALSE);
 if (unlikely (status))
     goto cleanup_composite;

 _cairo_output_stream_printf (surface->stream, "Q\n");
 _cairo_pdf_operators_reset (&surface->pdf_operators);
    } else {
 status = _cairo_ps_surface_emit_pattern (surface, source, &extents.bounded, op);
 if (unlikely (status))
     goto cleanup_composite;

 status = _cairo_pdf_operators_fill (&surface->pdf_operators,
         path,
         fill_rule);
    }

cleanup_composite:
    _cairo_composite_rectangles_fini (&extents);
    return status;
}

static cairo_bool_t
_cairo_ps_surface_has_show_text_glyphs (void   *abstract_surface)
{
    return TRUE;
}

static cairo_int_status_t
_cairo_ps_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_ps_surface_t *surface = abstract_surface;
    cairo_composite_rectangles_t extents;
    cairo_bool_t overlap;
    cairo_status_t status;

    status = _cairo_composite_rectangles_init_for_glyphs (&extents,
         &surface->base,
         op, source,
         scaled_font,
         glyphs, num_glyphs,
         clip,
         &overlap);
    if (unlikely (status))
 return status;

    if (surface->paginated_mode == CAIRO_PAGINATED_MODE_ANALYZE) {
 status = _cairo_ps_surface_analyze_operation (surface, op, source, NULL, &extents.bounded);
 goto cleanup_composite;
    }

    assert (_cairo_ps_surface_operation_supported (surface, op, source, NULL, &extents.bounded));

#if DEBUG_PS
    _cairo_output_stream_printf (surface->stream,
     "%% _cairo_ps_surface_show_glyphs\n");
#endif

    status = _cairo_ps_surface_set_clip (surface, &extents);
    if (unlikely (status))
 goto cleanup_composite;

    status = _cairo_ps_surface_emit_pattern (surface, source, &extents.bounded, op);
    if (unlikely (status))
 goto cleanup_composite;

    status = _cairo_pdf_operators_show_text_glyphs (&surface->pdf_operators,
          utf8, utf8_len,
          glyphs, num_glyphs,
          clusters, num_clusters,
          cluster_flags,
          scaled_font);

cleanup_composite:
    _cairo_composite_rectangles_fini (&extents);
    return status;
}

static const char **
_cairo_ps_surface_get_supported_mime_types (void   *abstract_surface)
{
    return _cairo_ps_supported_mime_types;
}

static cairo_int_status_t
_cairo_ps_surface_set_paginated_mode (void   *abstract_surface,
          cairo_paginated_mode_t  paginated_mode)
{
    cairo_ps_surface_t *surface = abstract_surface;
    cairo_status_t status;

    surface->paginated_mode = paginated_mode;

    if (paginated_mode == CAIRO_PAGINATED_MODE_RENDER) {
 surface->surface_extents.x = 0;
 surface->surface_extents.y = 0;
 surface->surface_extents.width  = ceil (surface->width);
 surface->surface_extents.height = ceil (surface->height);

 if (surface->clipper.clip != NULL)
 {
     status = _cairo_pdf_operators_flush (&surface->pdf_operators);

     _cairo_output_stream_printf (surface->stream, "Q q\n");
     _cairo_surface_clipper_reset (&surface->clipper);
 }
    }

    return CAIRO_STATUS_SUCCESS;
}

static cairo_int_status_t
_cairo_ps_surface_set_bounding_box (void  *abstract_surface,
        cairo_box_t  *analysis_bbox)
{
    cairo_ps_surface_t *surface = abstract_surface;
    int i, num_comments;
    char **comments;
    cairo_bool_t has_page_media, has_page_bbox;
    const char *page_media;
    cairo_rectangle_int_t page_bbox;
    cairo_point_int_t bbox_p1, bbox_p2; /* in PS coordinates */

    _cairo_box_round_to_rectangle (analysis_bbox, &page_bbox);

    /* convert to PS coordinates */
    bbox_p1.x = page_bbox.x;
    bbox_p1.y = ceil(surface->height) - (page_bbox.y + page_bbox.height);
    bbox_p2.x = page_bbox.x + page_bbox.width;
    bbox_p2.y = ceil(surface->height) - page_bbox.y;

    if (surface->num_pages == 1) {
 surface->document_bbox_p1 = bbox_p1;
 surface->document_bbox_p2 = bbox_p2;
    } else {
 if (bbox_p1.x < surface->document_bbox_p1.x)
     surface->document_bbox_p1.x = bbox_p1.x;
 if (bbox_p1.y < surface->document_bbox_p1.y)
     surface->document_bbox_p1.y = bbox_p1.y;
 if (bbox_p2.x < surface->document_bbox_p2.x)
     surface->document_bbox_p2.x = bbox_p2.x;
 if (bbox_p2.y < surface->document_bbox_p2.y)
     surface->document_bbox_p2.y = bbox_p2.y;
    }

    _cairo_output_stream_printf (surface->stream,
     "%%%%Page: %d %d\n",
     surface->num_pages,
     surface->num_pages);

    _cairo_output_stream_printf (surface->stream,
     "%%%%BeginPageSetup\n");

    has_page_media = FALSE;
    has_page_bbox = FALSE;
    num_comments = _cairo_array_num_elements (&surface->dsc_page_setup_comments);
    comments = _cairo_array_index (&surface->dsc_page_setup_comments, 0);
    for (i = 0; i < num_comments; i++) {
 _cairo_output_stream_printf (surface->stream,
         "%s\n", comments[i]);
 if (strncmp (comments[i], "%%PageMedia:", 11) == 0)
     has_page_media = TRUE;

 if (strncmp (comments[i], "%%PageBoundingBox:", 18) == 0)
     has_page_bbox = TRUE;

 free (comments[i]);
 comments[i] = NULL;
    }
    _cairo_array_truncate (&surface->dsc_page_setup_comments, 0);

    if (!has_page_media && !surface->eps) {
 page_media = _cairo_ps_surface_get_page_media (surface);
 if (unlikely (page_media == NULL))
     return _cairo_error (CAIRO_STATUS_NO_MEMORY);

 _cairo_output_stream_printf (surface->stream,
         "%%%%PageMedia: %s\n",
         page_media);
    }

    if (!has_page_bbox) {
 _cairo_output_stream_printf (surface->stream,
         "%%%%PageBoundingBox: %d %d %d %d\n",
         bbox_p1.x,
         bbox_p1.y,
         bbox_p2.x,
         bbox_p2.y);
    }

    if (!surface->eps) {
 _cairo_output_stream_printf (surface->stream,
         "%f %f cairo_set_page_size\n",
         ceil(surface->width),
         ceil(surface->height));
    }

    _cairo_output_stream_printf (surface->stream,
                                 "%%%%EndPageSetup\n"
     "q %d %d %d %d rectclip\n"
                                 "1 0 0 -1 0 %f cm q\n",
     bbox_p1.x,
     bbox_p1.y,
     bbox_p2.x - bbox_p1.x,
     bbox_p2.y - bbox_p1.y,
     ceil(surface->height));

    surface->current_pattern_is_solid_color = FALSE;
    _cairo_pdf_operators_reset (&surface->pdf_operators);

    return _cairo_output_stream_get_status (surface->stream);
}

static cairo_bool_t
_cairo_ps_surface_supports_fine_grained_fallbacks (void     *abstract_surface)
{
    return TRUE;
}

static const cairo_surface_backend_t cairo_ps_surface_backend = {
    CAIRO_SURFACE_TYPE_PS,
    _cairo_ps_surface_finish,

    _cairo_default_context_create,

    NULL, /* create similar: handled by wrapper */
    NULL, /* create similar image */
    NULL, /* map to image */
    NULL, /* unmap image */

    _cairo_surface_default_source,
    NULL, /* acquire_source_image */
    NULL, /* release_source_image */
    NULL, /* snapshot */

    NULL, /* cairo_ps_surface_copy_page */
    _cairo_ps_surface_show_page,

    _cairo_ps_surface_get_extents,
    _cairo_ps_surface_get_font_options,

    NULL, /* flush */
    NULL, /* mark_dirty_rectangle */

    /* Here are the drawing functions */

    _cairo_ps_surface_paint, /* paint */
    _cairo_ps_surface_mask,
    _cairo_ps_surface_stroke,
    _cairo_ps_surface_fill,
    NULL, /* fill-stroke */
    NULL, /* show_glyphs */
    _cairo_ps_surface_has_show_text_glyphs,
    _cairo_ps_surface_show_text_glyphs,
    _cairo_ps_surface_get_supported_mime_types,
};

static const cairo_paginated_surface_backend_t cairo_ps_surface_paginated_backend = {
    _cairo_ps_surface_start_page,
    _cairo_ps_surface_set_paginated_mode,
    _cairo_ps_surface_set_bounding_box,
    NULL, /* _cairo_ps_surface_has_fallback_images, */
    _cairo_ps_surface_supports_fine_grained_fallbacks,
};