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  1. /* -*- Mode: c; c-basic-offset: 4; indent-tabs-mode: t; tab-width: 8; -*- */
  2. /* cairo - a vector graphics library with display and print output
  3.  *
  4.  * Copyright © 2008 Adrian Johnson
  5.  *
  6.  * This library is free software; you can redistribute it and/or
  7.  * modify it either under the terms of the GNU Lesser General Public
  8.  * License version 2.1 as published by the Free Software Foundation
  9.  * (the "LGPL") or, at your option, under the terms of the Mozilla
  10.  * Public License Version 1.1 (the "MPL"). If you do not alter this
  11.  * notice, a recipient may use your version of this file under either
  12.  * the MPL or the LGPL.
  13.  *
  14.  * You should have received a copy of the LGPL along with this library
  15.  * in the file COPYING-LGPL-2.1; if not, write to the Free Software
  16.  * Foundation, Inc., 51 Franklin Street, Suite 500, Boston, MA 02110-1335, USA
  17.  * You should have received a copy of the MPL along with this library
  18.  * in the file COPYING-MPL-1.1
  19.  *
  20.  * The contents of this file are subject to the Mozilla Public License
  21.  * Version 1.1 (the "License"); you may not use this file except in
  22.  * compliance with the License. You may obtain a copy of the License at
  23.  * http://www.mozilla.org/MPL/
  24.  *
  25.  * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY
  26.  * OF ANY KIND, either express or implied. See the LGPL or the MPL for
  27.  * the specific language governing rights and limitations.
  28.  *
  29.  * The Original Code is the cairo graphics library.
  30.  *
  31.  * The Initial Developer of the Original Code is Adrian Johnson.
  32.  *
  33.  * Contributor(s):
  34.  *      Adrian Johnson <ajohnson@redneon.com>
  35.  */
  36.  
  37. #include "cairoint.h"
  38.  
  39. #if CAIRO_HAS_FONT_SUBSET
  40.  
  41. #include "cairo-type3-glyph-surface-private.h"
  42. #include "cairo-output-stream-private.h"
  43. #include "cairo-recording-surface-private.h"
  44. #include "cairo-analysis-surface-private.h"
  45. #include "cairo-default-context-private.h"
  46. #include "cairo-error-private.h"
  47. #include "cairo-image-surface-private.h"
  48. #include "cairo-surface-clipper-private.h"
  49.  
  50. static const cairo_surface_backend_t cairo_type3_glyph_surface_backend;
  51.  
  52. static cairo_status_t
  53. _cairo_type3_glyph_surface_clipper_intersect_clip_path (cairo_surface_clipper_t *clipper,
  54.                                                         cairo_path_fixed_t *path,
  55.                                                         cairo_fill_rule_t   fill_rule,
  56.                                                         double              tolerance,
  57.                                                         cairo_antialias_t   antialias)
  58. {
  59.     cairo_type3_glyph_surface_t *surface = cairo_container_of (clipper,
  60.                                                                cairo_type3_glyph_surface_t,
  61.                                                                clipper);
  62.  
  63.     if (path == NULL) {
  64.         _cairo_output_stream_printf (surface->stream, "Q q\n");
  65.         return CAIRO_STATUS_SUCCESS;
  66.     }
  67.  
  68.     return _cairo_pdf_operators_clip (&surface->pdf_operators,
  69.                                       path,
  70.                                       fill_rule);
  71. }
  72.  
  73. cairo_surface_t *
  74. _cairo_type3_glyph_surface_create (cairo_scaled_font_t                   *scaled_font,
  75.                                    cairo_output_stream_t                 *stream,
  76.                                    cairo_type3_glyph_surface_emit_image_t emit_image,
  77.                                    cairo_scaled_font_subsets_t           *font_subsets)
  78. {
  79.     cairo_type3_glyph_surface_t *surface;
  80.     cairo_matrix_t invert_y_axis;
  81.  
  82.     if (unlikely (stream != NULL && stream->status))
  83.         return _cairo_surface_create_in_error (stream->status);
  84.  
  85.     surface = malloc (sizeof (cairo_type3_glyph_surface_t));
  86.     if (unlikely (surface == NULL))
  87.         return _cairo_surface_create_in_error (_cairo_error (CAIRO_STATUS_NO_MEMORY));
  88.  
  89.     _cairo_surface_init (&surface->base,
  90.                          &cairo_type3_glyph_surface_backend,
  91.                          NULL, /* device */
  92.                          CAIRO_CONTENT_COLOR_ALPHA);
  93.  
  94.     surface->scaled_font = scaled_font;
  95.     surface->stream = stream;
  96.     surface->emit_image = emit_image;
  97.  
  98.     /* Setup the transform from the user-font device space to Type 3
  99.      * font space. The Type 3 font space is defined by the FontMatrix
  100.      * entry in the Type 3 dictionary. In the PDF backend this is an
  101.      * identity matrix. */
  102.     surface->cairo_to_pdf = scaled_font->scale_inverse;
  103.     cairo_matrix_init_scale (&invert_y_axis, 1, -1);
  104.     cairo_matrix_multiply (&surface->cairo_to_pdf, &surface->cairo_to_pdf, &invert_y_axis);
  105.  
  106.     _cairo_pdf_operators_init (&surface->pdf_operators,
  107.                                surface->stream,
  108.                                &surface->cairo_to_pdf,
  109.                                font_subsets);
  110.  
  111.     _cairo_surface_clipper_init (&surface->clipper,
  112.                                  _cairo_type3_glyph_surface_clipper_intersect_clip_path);
  113.  
  114.     return &surface->base;
  115. }
  116.  
  117. static cairo_status_t
  118. _cairo_type3_glyph_surface_emit_image (cairo_type3_glyph_surface_t *surface,
  119.                                        cairo_image_surface_t       *image,
  120.                                        cairo_matrix_t              *image_matrix)
  121. {
  122.     cairo_status_t status;
  123.  
  124.     /* The only image type supported by Type 3 fonts are 1-bit masks */
  125.     image = _cairo_image_surface_coerce_to_format (image, CAIRO_FORMAT_A1);
  126.     status = image->base.status;
  127.     if (unlikely (status))
  128.         return status;
  129.  
  130.     _cairo_output_stream_printf (surface->stream,
  131.                                  "q %f %f %f %f %f %f cm\n",
  132.                                  image_matrix->xx,
  133.                                  image_matrix->xy,
  134.                                  image_matrix->yx,
  135.                                  image_matrix->yy,
  136.                                  image_matrix->x0,
  137.                                  image_matrix->y0);
  138.  
  139.     status = surface->emit_image (image, surface->stream);
  140.     cairo_surface_destroy (&image->base);
  141.  
  142.     _cairo_output_stream_printf (surface->stream,
  143.                                  "Q\n");
  144.  
  145.     return status;
  146. }
  147.  
  148. static cairo_status_t
  149. _cairo_type3_glyph_surface_emit_image_pattern (cairo_type3_glyph_surface_t *surface,
  150.                                                cairo_image_surface_t       *image,
  151.                                                const cairo_matrix_t              *pattern_matrix)
  152. {
  153.     cairo_matrix_t mat, upside_down;
  154.     cairo_status_t status;
  155.  
  156.     if (image->width == 0 || image->height == 0)
  157.         return CAIRO_STATUS_SUCCESS;
  158.  
  159.     mat = *pattern_matrix;
  160.  
  161.     /* Get the pattern space to user space matrix  */
  162.     status = cairo_matrix_invert (&mat);
  163.  
  164.     /* cairo_pattern_set_matrix ensures the matrix is invertible */
  165.     assert (status == CAIRO_STATUS_SUCCESS);
  166.  
  167.     /* Make this a pattern space to Type 3 font space matrix */
  168.     cairo_matrix_multiply (&mat, &mat, &surface->cairo_to_pdf);
  169.  
  170.     /* PDF images are in a 1 unit by 1 unit image space. Turn the 1 by
  171.      * 1 image upside down to convert to flip the Y-axis going from
  172.      * cairo to PDF. Then scale the image up to the required size. */
  173.     cairo_matrix_scale (&mat, image->width, image->height);
  174.     cairo_matrix_init (&upside_down, 1, 0, 0, -1, 0, 1);
  175.     cairo_matrix_multiply (&mat, &upside_down, &mat);
  176.  
  177.     return _cairo_type3_glyph_surface_emit_image (surface, image, &mat);
  178. }
  179.  
  180. static cairo_status_t
  181. _cairo_type3_glyph_surface_finish (void *abstract_surface)
  182. {
  183.     cairo_type3_glyph_surface_t *surface = abstract_surface;
  184.  
  185.     return _cairo_pdf_operators_fini (&surface->pdf_operators);
  186. }
  187.  
  188. static cairo_int_status_t
  189. _cairo_type3_glyph_surface_paint (void                  *abstract_surface,
  190.                                   cairo_operator_t       op,
  191.                                   const cairo_pattern_t *source,
  192.                                   const cairo_clip_t    *clip)
  193. {
  194.     cairo_type3_glyph_surface_t *surface = abstract_surface;
  195.     const cairo_surface_pattern_t *pattern;
  196.     cairo_image_surface_t *image;
  197.     void *image_extra;
  198.     cairo_status_t status;
  199.  
  200.     if (source->type != CAIRO_PATTERN_TYPE_SURFACE)
  201.         return CAIRO_INT_STATUS_IMAGE_FALLBACK;
  202.  
  203.     status = _cairo_surface_clipper_set_clip (&surface->clipper, clip);
  204.     if (unlikely (status))
  205.         return status;
  206.  
  207.     pattern = (const cairo_surface_pattern_t *) source;
  208.     status = _cairo_surface_acquire_source_image (pattern->surface,
  209.                                                   &image, &image_extra);
  210.     if (unlikely (status))
  211.         goto fail;
  212.  
  213.     status = _cairo_type3_glyph_surface_emit_image_pattern (surface,
  214.                                                             image,
  215.                                                             &pattern->base.matrix);
  216.  
  217. fail:
  218.     _cairo_surface_release_source_image (pattern->surface, image, image_extra);
  219.  
  220.     return status;
  221. }
  222.  
  223. static cairo_int_status_t
  224. _cairo_type3_glyph_surface_mask (void                   *abstract_surface,
  225.                                  cairo_operator_t        op,
  226.                                  const cairo_pattern_t  *source,
  227.                                  const cairo_pattern_t  *mask,
  228.                                  const cairo_clip_t     *clip)
  229. {
  230.     return _cairo_type3_glyph_surface_paint (abstract_surface,
  231.                                              op, mask,
  232.                                              clip);
  233. }
  234.  
  235. static cairo_int_status_t
  236. _cairo_type3_glyph_surface_stroke (void                 *abstract_surface,
  237.                                    cairo_operator_t      op,
  238.                                    const cairo_pattern_t *source,
  239.                                    const cairo_path_fixed_t     *path,
  240.                                    const cairo_stroke_style_t   *style,
  241.                                    const cairo_matrix_t *ctm,
  242.                                    const cairo_matrix_t *ctm_inverse,
  243.                                    double                tolerance,
  244.                                    cairo_antialias_t     antialias,
  245.                                    const cairo_clip_t   *clip)
  246. {
  247.     cairo_type3_glyph_surface_t *surface = abstract_surface;
  248.     cairo_int_status_t status;
  249.  
  250.     status = _cairo_surface_clipper_set_clip (&surface->clipper, clip);
  251.     if (unlikely (status))
  252.         return status;
  253.  
  254.     return _cairo_pdf_operators_stroke (&surface->pdf_operators,
  255.                                         path,
  256.                                         style,
  257.                                         ctm,
  258.                                         ctm_inverse);
  259. }
  260.  
  261. static cairo_int_status_t
  262. _cairo_type3_glyph_surface_fill (void                   *abstract_surface,
  263.                                  cairo_operator_t        op,
  264.                                  const cairo_pattern_t  *source,
  265.                                  const cairo_path_fixed_t       *path,
  266.                                  cairo_fill_rule_t       fill_rule,
  267.                                  double                  tolerance,
  268.                                  cairo_antialias_t       antialias,
  269.                                  const cairo_clip_t             *clip)
  270. {
  271.     cairo_type3_glyph_surface_t *surface = abstract_surface;
  272.     cairo_int_status_t status;
  273.  
  274.     status = _cairo_surface_clipper_set_clip (&surface->clipper, clip);
  275.     if (unlikely (status))
  276.         return status;
  277.  
  278.     return _cairo_pdf_operators_fill (&surface->pdf_operators,
  279.                                       path,
  280.                                       fill_rule);
  281. }
  282.  
  283. static cairo_int_status_t
  284. _cairo_type3_glyph_surface_show_glyphs (void                 *abstract_surface,
  285.                                         cairo_operator_t      op,
  286.                                         const cairo_pattern_t *source,
  287.                                         cairo_glyph_t        *glyphs,
  288.                                         int                   num_glyphs,
  289.                                         cairo_scaled_font_t  *scaled_font,
  290.                                         const cairo_clip_t     *clip)
  291. {
  292.     cairo_type3_glyph_surface_t *surface = abstract_surface;
  293.     cairo_int_status_t status;
  294.     cairo_scaled_font_t *font;
  295.     cairo_matrix_t new_ctm, invert_y_axis;
  296.  
  297.     status = _cairo_surface_clipper_set_clip (&surface->clipper, clip);
  298.     if (unlikely (status))
  299.         return status;
  300.  
  301.     cairo_matrix_init_scale (&invert_y_axis, 1, -1);
  302.     cairo_matrix_multiply (&new_ctm, &invert_y_axis, &scaled_font->ctm);
  303.     cairo_matrix_multiply (&new_ctm, &surface->cairo_to_pdf, &new_ctm);
  304.     font = cairo_scaled_font_create (scaled_font->font_face,
  305.                                      &scaled_font->font_matrix,
  306.                                      &new_ctm,
  307.                                      &scaled_font->options);
  308.     if (unlikely (font->status))
  309.         return font->status;
  310.  
  311.     status = _cairo_pdf_operators_show_text_glyphs (&surface->pdf_operators,
  312.                                                     NULL, 0,
  313.                                                     glyphs, num_glyphs,
  314.                                                     NULL, 0,
  315.                                                     FALSE,
  316.                                                     font);
  317.  
  318.     cairo_scaled_font_destroy (font);
  319.  
  320.     return status;
  321. }
  322.  
  323. static const cairo_surface_backend_t cairo_type3_glyph_surface_backend = {
  324.     CAIRO_INTERNAL_SURFACE_TYPE_TYPE3_GLYPH,
  325.     _cairo_type3_glyph_surface_finish,
  326.  
  327.     _cairo_default_context_create, /* XXX usable through a context? */
  328.  
  329.     NULL, /* create similar */
  330.     NULL, /* create similar image */
  331.     NULL, /* map to image */
  332.     NULL, /* unmap image */
  333.  
  334.     NULL, /* source */
  335.     NULL, /* acquire_source_image */
  336.     NULL, /* release_source_image */
  337.     NULL, /* snapshot */
  338.  
  339.     NULL, /* copy page */
  340.     NULL, /* show page */
  341.  
  342.     NULL, /* _cairo_type3_glyph_surface_get_extents */
  343.     NULL, /* _cairo_type3_glyph_surface_get_font_options */
  344.  
  345.     NULL, /* flush */
  346.     NULL, /* mark_dirty_rectangle */
  347.  
  348.     _cairo_type3_glyph_surface_paint,
  349.     _cairo_type3_glyph_surface_mask,
  350.     _cairo_type3_glyph_surface_stroke,
  351.     _cairo_type3_glyph_surface_fill,
  352.     NULL, /* fill-stroke */
  353.     _cairo_type3_glyph_surface_show_glyphs,
  354. };
  355.  
  356. static void
  357. _cairo_type3_glyph_surface_set_stream (cairo_type3_glyph_surface_t *surface,
  358.                                        cairo_output_stream_t       *stream)
  359. {
  360.     surface->stream = stream;
  361.     _cairo_pdf_operators_set_stream (&surface->pdf_operators, stream);
  362. }
  363.  
  364. static cairo_status_t
  365. _cairo_type3_glyph_surface_emit_fallback_image (cairo_type3_glyph_surface_t *surface,
  366.                                                 unsigned long                glyph_index)
  367. {
  368.     cairo_scaled_glyph_t *scaled_glyph;
  369.     cairo_status_t status;
  370.     cairo_image_surface_t *image;
  371.     cairo_matrix_t mat;
  372.     double x, y;
  373.  
  374.     status = _cairo_scaled_glyph_lookup (surface->scaled_font,
  375.                                          glyph_index,
  376.                                          CAIRO_SCALED_GLYPH_INFO_METRICS |
  377.                                          CAIRO_SCALED_GLYPH_INFO_SURFACE,
  378.                                          &scaled_glyph);
  379.     if (unlikely (status))
  380.         return status;
  381.  
  382.     image = scaled_glyph->surface;
  383.     if (image->width == 0 || image->height == 0)
  384.         return CAIRO_STATUS_SUCCESS;
  385.  
  386.     x = _cairo_fixed_to_double (scaled_glyph->bbox.p1.x);
  387.     y = _cairo_fixed_to_double (scaled_glyph->bbox.p2.y);
  388.     mat.xx = image->width;
  389.     mat.xy = 0;
  390.     mat.yx = 0;
  391.     mat.yy = image->height;
  392.     mat.x0 = x;
  393.     mat.y0 = y;
  394.     cairo_matrix_multiply (&mat, &mat, &surface->scaled_font->scale_inverse);
  395.     mat.y0 *= -1;
  396.  
  397.     return _cairo_type3_glyph_surface_emit_image (surface, image, &mat);
  398. }
  399.  
  400. void
  401. _cairo_type3_glyph_surface_set_font_subsets_callback (void                                  *abstract_surface,
  402.                                                       cairo_pdf_operators_use_font_subset_t  use_font_subset,
  403.                                                       void                                  *closure)
  404. {
  405.     cairo_type3_glyph_surface_t *surface = abstract_surface;
  406.  
  407.     if (unlikely (surface->base.status))
  408.         return;
  409.  
  410.     _cairo_pdf_operators_set_font_subsets_callback (&surface->pdf_operators,
  411.                                                     use_font_subset,
  412.                                                     closure);
  413. }
  414.  
  415. cairo_status_t
  416. _cairo_type3_glyph_surface_analyze_glyph (void               *abstract_surface,
  417.                                           unsigned long       glyph_index)
  418. {
  419.     cairo_type3_glyph_surface_t *surface = abstract_surface;
  420.     cairo_scaled_glyph_t *scaled_glyph;
  421.     cairo_int_status_t status, status2;
  422.     cairo_output_stream_t *null_stream;
  423.  
  424.     if (unlikely (surface->base.status))
  425.         return surface->base.status;
  426.  
  427.     null_stream = _cairo_null_stream_create ();
  428.     if (unlikely (null_stream->status))
  429.         return null_stream->status;
  430.  
  431.     _cairo_type3_glyph_surface_set_stream (surface, null_stream);
  432.  
  433.     _cairo_scaled_font_freeze_cache (surface->scaled_font);
  434.     status = _cairo_scaled_glyph_lookup (surface->scaled_font,
  435.                                          glyph_index,
  436.                                          CAIRO_SCALED_GLYPH_INFO_RECORDING_SURFACE,
  437.                                          &scaled_glyph);
  438.  
  439.     if (_cairo_int_status_is_error (status))
  440.         goto cleanup;
  441.  
  442.     if (status == CAIRO_INT_STATUS_UNSUPPORTED) {
  443.         status = CAIRO_INT_STATUS_SUCCESS;
  444.         goto cleanup;
  445.     }
  446.  
  447.     status = _cairo_recording_surface_replay (scaled_glyph->recording_surface,
  448.                                               &surface->base);
  449.     if (unlikely (status))
  450.         goto cleanup;
  451.  
  452.     status = _cairo_pdf_operators_flush (&surface->pdf_operators);
  453.     if (status == CAIRO_INT_STATUS_IMAGE_FALLBACK)
  454.         status = CAIRO_INT_STATUS_SUCCESS;
  455.  
  456. cleanup:
  457.     _cairo_scaled_font_thaw_cache (surface->scaled_font);
  458.  
  459.     status2 = _cairo_output_stream_destroy (null_stream);
  460.     if (status == CAIRO_INT_STATUS_SUCCESS)
  461.         status = status2;
  462.  
  463.     return status;
  464. }
  465.  
  466. cairo_status_t
  467. _cairo_type3_glyph_surface_emit_glyph (void                  *abstract_surface,
  468.                                        cairo_output_stream_t *stream,
  469.                                        unsigned long          glyph_index,
  470.                                        cairo_box_t           *bbox,
  471.                                        double                *width)
  472. {
  473.     cairo_type3_glyph_surface_t *surface = abstract_surface;
  474.     cairo_scaled_glyph_t *scaled_glyph;
  475.     cairo_int_status_t status, status2;
  476.     double x_advance, y_advance;
  477.     cairo_matrix_t font_matrix_inverse;
  478.  
  479.     if (unlikely (surface->base.status))
  480.         return surface->base.status;
  481.  
  482.     _cairo_type3_glyph_surface_set_stream (surface, stream);
  483.  
  484.     _cairo_scaled_font_freeze_cache (surface->scaled_font);
  485.     status = _cairo_scaled_glyph_lookup (surface->scaled_font,
  486.                                          glyph_index,
  487.                                          CAIRO_SCALED_GLYPH_INFO_METRICS |
  488.                                          CAIRO_SCALED_GLYPH_INFO_RECORDING_SURFACE,
  489.                                          &scaled_glyph);
  490.     if (status == CAIRO_INT_STATUS_UNSUPPORTED) {
  491.         status = _cairo_scaled_glyph_lookup (surface->scaled_font,
  492.                                              glyph_index,
  493.                                              CAIRO_SCALED_GLYPH_INFO_METRICS,
  494.                                              &scaled_glyph);
  495.         if (status == CAIRO_INT_STATUS_SUCCESS)
  496.             status = CAIRO_INT_STATUS_IMAGE_FALLBACK;
  497.     }
  498.     if (_cairo_int_status_is_error (status)) {
  499.         _cairo_scaled_font_thaw_cache (surface->scaled_font);
  500.         return status;
  501.     }
  502.  
  503.     x_advance = scaled_glyph->metrics.x_advance;
  504.     y_advance = scaled_glyph->metrics.y_advance;
  505.     font_matrix_inverse = surface->scaled_font->font_matrix;
  506.     status2 = cairo_matrix_invert (&font_matrix_inverse);
  507.  
  508.     /* The invertability of font_matrix is tested in
  509.      * pdf_operators_show_glyphs before any glyphs are mapped to the
  510.      * subset. */
  511.     assert (status2 == CAIRO_INT_STATUS_SUCCESS);
  512.  
  513.     cairo_matrix_transform_distance (&font_matrix_inverse, &x_advance, &y_advance);
  514.     *width = x_advance;
  515.  
  516.     *bbox = scaled_glyph->bbox;
  517.     _cairo_matrix_transform_bounding_box_fixed (&surface->scaled_font->scale_inverse,
  518.                                                 bbox, NULL);
  519.  
  520.     _cairo_output_stream_printf (surface->stream,
  521.                                  "%f 0 %f %f %f %f d1\n",
  522.                                  x_advance,
  523.                                  _cairo_fixed_to_double (bbox->p1.x),
  524.                                  - _cairo_fixed_to_double (bbox->p2.y),
  525.                                  _cairo_fixed_to_double (bbox->p2.x),
  526.                                  - _cairo_fixed_to_double (bbox->p1.y));
  527.  
  528.     if (status == CAIRO_INT_STATUS_SUCCESS) {
  529.         cairo_output_stream_t *mem_stream;
  530.  
  531.         mem_stream = _cairo_memory_stream_create ();
  532.         status = mem_stream->status;
  533.         if (unlikely (status))
  534.             goto FAIL;
  535.  
  536.         _cairo_type3_glyph_surface_set_stream (surface, mem_stream);
  537.  
  538.         _cairo_output_stream_printf (surface->stream, "q\n");
  539.         status = _cairo_recording_surface_replay (scaled_glyph->recording_surface,
  540.                                                   &surface->base);
  541.  
  542.         status2 = _cairo_pdf_operators_flush (&surface->pdf_operators);
  543.         if (status == CAIRO_INT_STATUS_SUCCESS)
  544.             status = status2;
  545.  
  546.         _cairo_output_stream_printf (surface->stream, "Q\n");
  547.  
  548.         _cairo_type3_glyph_surface_set_stream (surface, stream);
  549.         if (status == CAIRO_INT_STATUS_SUCCESS)
  550.             _cairo_memory_stream_copy (mem_stream, stream);
  551.  
  552.         status2 = _cairo_output_stream_destroy (mem_stream);
  553.         if (status == CAIRO_INT_STATUS_SUCCESS)
  554.             status = status2;
  555.     }
  556.  
  557.     if (status == CAIRO_INT_STATUS_IMAGE_FALLBACK)
  558.         status = _cairo_type3_glyph_surface_emit_fallback_image (surface, glyph_index);
  559.  
  560.   FAIL:
  561.     _cairo_scaled_font_thaw_cache (surface->scaled_font);
  562.  
  563.     return status;
  564. }
  565.  
  566. #endif /* CAIRO_HAS_FONT_SUBSET */
  567.