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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-error-private.h"
  46. #include "cairo-surface-clipper-private.h"
  47.  
  48. static const cairo_surface_backend_t cairo_type3_glyph_surface_backend;
  49.  
  50. static cairo_status_t
  51. _cairo_type3_glyph_surface_clipper_intersect_clip_path (cairo_surface_clipper_t *clipper,
  52.                                                         cairo_path_fixed_t *path,
  53.                                                         cairo_fill_rule_t   fill_rule,
  54.                                                         double              tolerance,
  55.                                                         cairo_antialias_t   antialias)
  56. {
  57.     cairo_type3_glyph_surface_t *surface = cairo_container_of (clipper,
  58.                                                                cairo_type3_glyph_surface_t,
  59.                                                                clipper);
  60.  
  61.     if (path == NULL) {
  62.         _cairo_output_stream_printf (surface->stream, "Q q\n");
  63.         return CAIRO_STATUS_SUCCESS;
  64.     }
  65.  
  66.     return _cairo_pdf_operators_clip (&surface->pdf_operators,
  67.                                       path,
  68.                                       fill_rule);
  69. }
  70.  
  71. cairo_surface_t *
  72. _cairo_type3_glyph_surface_create (cairo_scaled_font_t                   *scaled_font,
  73.                                    cairo_output_stream_t                 *stream,
  74.                                    cairo_type3_glyph_surface_emit_image_t emit_image,
  75.                                    cairo_scaled_font_subsets_t           *font_subsets)
  76. {
  77.     cairo_type3_glyph_surface_t *surface;
  78.     cairo_matrix_t invert_y_axis;
  79.  
  80.     if (unlikely (stream != NULL && stream->status))
  81.         return _cairo_surface_create_in_error (stream->status);
  82.  
  83.     surface = malloc (sizeof (cairo_type3_glyph_surface_t));
  84.     if (unlikely (surface == NULL))
  85.         return _cairo_surface_create_in_error (_cairo_error (CAIRO_STATUS_NO_MEMORY));
  86.  
  87.     _cairo_surface_init (&surface->base,
  88.                          &cairo_type3_glyph_surface_backend,
  89.                          NULL, /* device */
  90.                          CAIRO_CONTENT_COLOR_ALPHA);
  91.  
  92.     surface->scaled_font = scaled_font;
  93.     surface->stream = stream;
  94.     surface->emit_image = emit_image;
  95.  
  96.     /* Setup the transform from the user-font device space to Type 3
  97.      * font space. The Type 3 font space is defined by the FontMatrix
  98.      * entry in the Type 3 dictionary. In the PDF backend this is an
  99.      * identity matrix. */
  100.     surface->cairo_to_pdf = scaled_font->scale_inverse;
  101.     cairo_matrix_init_scale (&invert_y_axis, 1, -1);
  102.     cairo_matrix_multiply (&surface->cairo_to_pdf, &surface->cairo_to_pdf, &invert_y_axis);
  103.  
  104.     _cairo_pdf_operators_init (&surface->pdf_operators,
  105.                                surface->stream,
  106.                                &surface->cairo_to_pdf,
  107.                                font_subsets);
  108.  
  109.     _cairo_surface_clipper_init (&surface->clipper,
  110.                                  _cairo_type3_glyph_surface_clipper_intersect_clip_path);
  111.  
  112.     return &surface->base;
  113. }
  114.  
  115. static cairo_status_t
  116. _cairo_type3_glyph_surface_emit_image (cairo_type3_glyph_surface_t *surface,
  117.                                        cairo_image_surface_t       *image,
  118.                                        cairo_matrix_t              *image_matrix)
  119. {
  120.     cairo_status_t status;
  121.  
  122.     /* The only image type supported by Type 3 fonts are 1-bit masks */
  123.     image = _cairo_image_surface_coerce_to_format (image, CAIRO_FORMAT_A1);
  124.     status = image->base.status;
  125.     if (unlikely (status))
  126.         return status;
  127.  
  128.     _cairo_output_stream_printf (surface->stream,
  129.                                  "q %f %f %f %f %f %f cm\n",
  130.                                  image_matrix->xx,
  131.                                  image_matrix->xy,
  132.                                  image_matrix->yx,
  133.                                  image_matrix->yy,
  134.                                  image_matrix->x0,
  135.                                  image_matrix->y0);
  136.  
  137.     status = surface->emit_image (image, surface->stream);
  138.     cairo_surface_destroy (&image->base);
  139.  
  140.     _cairo_output_stream_printf (surface->stream,
  141.                                  "Q\n");
  142.  
  143.     return status;
  144. }
  145.  
  146. static cairo_status_t
  147. _cairo_type3_glyph_surface_emit_image_pattern (cairo_type3_glyph_surface_t *surface,
  148.                                                cairo_image_surface_t       *image,
  149.                                                const cairo_matrix_t              *pattern_matrix)
  150. {
  151.     cairo_matrix_t mat, upside_down;
  152.     cairo_status_t status;
  153.  
  154.     if (image->width == 0 || image->height == 0)
  155.         return CAIRO_STATUS_SUCCESS;
  156.  
  157.     mat = *pattern_matrix;
  158.  
  159.     /* Get the pattern space to user space matrix  */
  160.     status = cairo_matrix_invert (&mat);
  161.  
  162.     /* cairo_pattern_set_matrix ensures the matrix is invertible */
  163.     assert (status == CAIRO_STATUS_SUCCESS);
  164.  
  165.     /* Make this a pattern space to Type 3 font space matrix */
  166.     cairo_matrix_multiply (&mat, &mat, &surface->cairo_to_pdf);
  167.  
  168.     /* PDF images are in a 1 unit by 1 unit image space. Turn the 1 by
  169.      * 1 image upside down to convert to flip the Y-axis going from
  170.      * cairo to PDF. Then scale the image up to the required size. */
  171.     cairo_matrix_scale (&mat, image->width, image->height);
  172.     cairo_matrix_init (&upside_down, 1, 0, 0, -1, 0, 1);
  173.     cairo_matrix_multiply (&mat, &upside_down, &mat);
  174.  
  175.     return _cairo_type3_glyph_surface_emit_image (surface, image, &mat);
  176. }
  177.  
  178. static cairo_status_t
  179. _cairo_type3_glyph_surface_finish (void *abstract_surface)
  180. {
  181.     cairo_type3_glyph_surface_t *surface = abstract_surface;
  182.  
  183.     return _cairo_pdf_operators_fini (&surface->pdf_operators);
  184. }
  185.  
  186. static cairo_int_status_t
  187. _cairo_type3_glyph_surface_paint (void                  *abstract_surface,
  188.                                   cairo_operator_t       op,
  189.                                   const cairo_pattern_t *source,
  190.                                   cairo_clip_t          *clip)
  191. {
  192.     cairo_type3_glyph_surface_t *surface = abstract_surface;
  193.     const cairo_surface_pattern_t *pattern;
  194.     cairo_image_surface_t *image;
  195.     void *image_extra;
  196.     cairo_status_t status;
  197.  
  198.     if (source->type != CAIRO_PATTERN_TYPE_SURFACE)
  199.         return CAIRO_INT_STATUS_IMAGE_FALLBACK;
  200.  
  201.     status = _cairo_surface_clipper_set_clip (&surface->clipper, clip);
  202.     if (unlikely (status))
  203.         return status;
  204.  
  205.     pattern = (const cairo_surface_pattern_t *) source;
  206.     status = _cairo_surface_acquire_source_image (pattern->surface,
  207.                                                   &image, &image_extra);
  208.     if (unlikely (status))
  209.         goto fail;
  210.  
  211.     status = _cairo_type3_glyph_surface_emit_image_pattern (surface,
  212.                                                             image,
  213.                                                             &pattern->base.matrix);
  214.  
  215. fail:
  216.     _cairo_surface_release_source_image (pattern->surface, image, image_extra);
  217.  
  218.     return status;
  219. }
  220.  
  221. static cairo_int_status_t
  222. _cairo_type3_glyph_surface_mask (void                   *abstract_surface,
  223.                                  cairo_operator_t        op,
  224.                                  const cairo_pattern_t  *source,
  225.                                  const cairo_pattern_t  *mask,
  226.                                  cairo_clip_t           *clip)
  227. {
  228.     return _cairo_type3_glyph_surface_paint (abstract_surface,
  229.                                              op, mask,
  230.                                              clip);
  231. }
  232.  
  233. static cairo_int_status_t
  234. _cairo_type3_glyph_surface_stroke (void                 *abstract_surface,
  235.                                    cairo_operator_t      op,
  236.                                    const cairo_pattern_t *source,
  237.                                    cairo_path_fixed_t   *path,
  238.                                    const cairo_stroke_style_t   *style,
  239.                                    const cairo_matrix_t *ctm,
  240.                                    const cairo_matrix_t *ctm_inverse,
  241.                                    double                tolerance,
  242.                                    cairo_antialias_t     antialias,
  243.                                    cairo_clip_t         *clip)
  244. {
  245.     cairo_type3_glyph_surface_t *surface = abstract_surface;
  246.     cairo_int_status_t status;
  247.  
  248.     status = _cairo_surface_clipper_set_clip (&surface->clipper, clip);
  249.     if (unlikely (status))
  250.         return status;
  251.  
  252.     return _cairo_pdf_operators_stroke (&surface->pdf_operators,
  253.                                         path,
  254.                                         style,
  255.                                         ctm,
  256.                                         ctm_inverse);
  257. }
  258.  
  259. static cairo_int_status_t
  260. _cairo_type3_glyph_surface_fill (void                   *abstract_surface,
  261.                                  cairo_operator_t        op,
  262.                                  const cairo_pattern_t  *source,
  263.                                  cairo_path_fixed_t     *path,
  264.                                  cairo_fill_rule_t       fill_rule,
  265.                                  double                  tolerance,
  266.                                  cairo_antialias_t       antialias,
  267.                                  cairo_clip_t           *clip)
  268. {
  269.     cairo_type3_glyph_surface_t *surface = abstract_surface;
  270.     cairo_int_status_t status;
  271.  
  272.     status = _cairo_surface_clipper_set_clip (&surface->clipper, clip);
  273.     if (unlikely (status))
  274.         return status;
  275.  
  276.     return _cairo_pdf_operators_fill (&surface->pdf_operators,
  277.                                       path,
  278.                                       fill_rule);
  279. }
  280.  
  281. static cairo_int_status_t
  282. _cairo_type3_glyph_surface_show_glyphs (void                 *abstract_surface,
  283.                                         cairo_operator_t      op,
  284.                                         const cairo_pattern_t *source,
  285.                                         cairo_glyph_t        *glyphs,
  286.                                         int                   num_glyphs,
  287.                                         cairo_scaled_font_t  *scaled_font,
  288.                                         cairo_clip_t         *clip,
  289.                                         int                  *remaining_glyphs)
  290. {
  291.     cairo_type3_glyph_surface_t *surface = abstract_surface;
  292.     cairo_int_status_t status;
  293.     cairo_scaled_font_t *font;
  294.     cairo_matrix_t new_ctm, invert_y_axis;
  295.  
  296.     status = _cairo_surface_clipper_set_clip (&surface->clipper, clip);
  297.     if (unlikely (status))
  298.         return status;
  299.  
  300.     cairo_matrix_init_scale (&invert_y_axis, 1, -1);
  301.     cairo_matrix_multiply (&new_ctm, &invert_y_axis, &scaled_font->ctm);
  302.     cairo_matrix_multiply (&new_ctm, &surface->cairo_to_pdf, &new_ctm);
  303.     font = cairo_scaled_font_create (scaled_font->font_face,
  304.                                      &scaled_font->font_matrix,
  305.                                      &new_ctm,
  306.                                      &scaled_font->options);
  307.     if (unlikely (font->status))
  308.         return font->status;
  309.  
  310.     status = _cairo_pdf_operators_show_text_glyphs (&surface->pdf_operators,
  311.                                                     NULL, 0,
  312.                                                     glyphs, num_glyphs,
  313.                                                     NULL, 0,
  314.                                                     FALSE,
  315.                                                     font);
  316.  
  317.     cairo_scaled_font_destroy (font);
  318.  
  319.     return status;
  320. }
  321.  
  322. static const cairo_surface_backend_t cairo_type3_glyph_surface_backend = {
  323.     CAIRO_INTERNAL_SURFACE_TYPE_TYPE3_GLYPH,
  324.     NULL, /* _cairo_type3_glyph_surface_create_similar */
  325.     _cairo_type3_glyph_surface_finish,
  326.     NULL, /* acquire_source_image */
  327.     NULL, /* release_source_image */
  328.     NULL, /* acquire_dest_image */
  329.     NULL, /* release_dest_image */
  330.     NULL, /* clone_similar */
  331.     NULL, /* composite */
  332.     NULL, /* fill_rectangles */
  333.     NULL, /* composite_trapezoids */
  334.     NULL, /* create_span_renderer */
  335.     NULL, /* check_span_renderer */
  336.     NULL, /* cairo_type3_glyph_surface_copy_page */
  337.     NULL, /* _cairo_type3_glyph_surface_show_page */
  338.     NULL, /* _cairo_type3_glyph_surface_get_extents */
  339.     NULL, /* old_show_glyphs */
  340.     NULL, /* _cairo_type3_glyph_surface_get_font_options */
  341.     NULL, /* flush */
  342.     NULL, /* mark_dirty_rectangle */
  343.     NULL, /* scaled_font_fini */
  344.     NULL, /* scaled_glyph_fini */
  345.     _cairo_type3_glyph_surface_paint,
  346.     _cairo_type3_glyph_surface_mask,
  347.     _cairo_type3_glyph_surface_stroke,
  348.     _cairo_type3_glyph_surface_fill,
  349.     _cairo_type3_glyph_surface_show_glyphs,
  350.     NULL, /* snapshot */
  351. };
  352.  
  353. static void
  354. _cairo_type3_glyph_surface_set_stream (cairo_type3_glyph_surface_t *surface,
  355.                                        cairo_output_stream_t       *stream)
  356. {
  357.     surface->stream = stream;
  358.     _cairo_pdf_operators_set_stream (&surface->pdf_operators, stream);
  359. }
  360.  
  361. static cairo_status_t
  362. _cairo_type3_glyph_surface_emit_fallback_image (cairo_type3_glyph_surface_t *surface,
  363.                                                 unsigned long                glyph_index)
  364. {
  365.     cairo_scaled_glyph_t *scaled_glyph;
  366.     cairo_status_t status;
  367.     cairo_image_surface_t *image;
  368.     cairo_matrix_t mat;
  369.     double x, y;
  370.  
  371.     status = _cairo_scaled_glyph_lookup (surface->scaled_font,
  372.                                          glyph_index,
  373.                                          CAIRO_SCALED_GLYPH_INFO_METRICS |
  374.                                          CAIRO_SCALED_GLYPH_INFO_SURFACE,
  375.                                          &scaled_glyph);
  376.     if (unlikely (status))
  377.         return status;
  378.  
  379.     image = scaled_glyph->surface;
  380.     if (image->width == 0 || image->height == 0)
  381.         return CAIRO_STATUS_SUCCESS;
  382.  
  383.     x = _cairo_fixed_to_double (scaled_glyph->bbox.p1.x);
  384.     y = _cairo_fixed_to_double (scaled_glyph->bbox.p2.y);
  385.     mat.xx = image->width;
  386.     mat.xy = 0;
  387.     mat.yx = 0;
  388.     mat.yy = image->height;
  389.     mat.x0 = x;
  390.     mat.y0 = y;
  391.     cairo_matrix_multiply (&mat, &mat, &surface->scaled_font->scale_inverse);
  392.     mat.y0 *= -1;
  393.  
  394.     return _cairo_type3_glyph_surface_emit_image (surface, image, &mat);
  395. }
  396.  
  397. void
  398. _cairo_type3_glyph_surface_set_font_subsets_callback (void                                  *abstract_surface,
  399.                                                       cairo_pdf_operators_use_font_subset_t  use_font_subset,
  400.                                                       void                                  *closure)
  401. {
  402.     cairo_type3_glyph_surface_t *surface = abstract_surface;
  403.  
  404.     if (unlikely (surface->base.status))
  405.         return;
  406.  
  407.     _cairo_pdf_operators_set_font_subsets_callback (&surface->pdf_operators,
  408.                                                     use_font_subset,
  409.                                                     closure);
  410. }
  411.  
  412. cairo_status_t
  413. _cairo_type3_glyph_surface_analyze_glyph (void               *abstract_surface,
  414.                                           unsigned long       glyph_index)
  415. {
  416.     cairo_type3_glyph_surface_t *surface = abstract_surface;
  417.     cairo_scaled_glyph_t *scaled_glyph;
  418.     cairo_status_t status, status2;
  419.     cairo_output_stream_t *null_stream;
  420.  
  421.     if (unlikely (surface->base.status))
  422.         return surface->base.status;
  423.  
  424.     null_stream = _cairo_null_stream_create ();
  425.     if (unlikely (null_stream->status))
  426.         return null_stream->status;
  427.  
  428.     _cairo_type3_glyph_surface_set_stream (surface, null_stream);
  429.  
  430.     _cairo_scaled_font_freeze_cache (surface->scaled_font);
  431.     status = _cairo_scaled_glyph_lookup (surface->scaled_font,
  432.                                          glyph_index,
  433.                                          CAIRO_SCALED_GLYPH_INFO_RECORDING_SURFACE,
  434.                                          &scaled_glyph);
  435.  
  436.     if (_cairo_status_is_error (status))
  437.         goto cleanup;
  438.  
  439.     if (status == CAIRO_INT_STATUS_UNSUPPORTED) {
  440.         status = CAIRO_STATUS_SUCCESS;
  441.         goto cleanup;
  442.     }
  443.  
  444.     status = _cairo_recording_surface_replay (scaled_glyph->recording_surface,
  445.                                               &surface->base);
  446.     if (unlikely (status))
  447.         goto cleanup;
  448.  
  449.     status = _cairo_pdf_operators_flush (&surface->pdf_operators);
  450.     if (status == CAIRO_INT_STATUS_IMAGE_FALLBACK)
  451.         status = CAIRO_STATUS_SUCCESS;
  452.  
  453. cleanup:
  454.     _cairo_scaled_font_thaw_cache (surface->scaled_font);
  455.  
  456.     status2 = _cairo_output_stream_destroy (null_stream);
  457.     if (status == CAIRO_STATUS_SUCCESS)
  458.         status = status2;
  459.  
  460.     return status;
  461. }
  462.  
  463. cairo_status_t
  464. _cairo_type3_glyph_surface_emit_glyph (void                  *abstract_surface,
  465.                                        cairo_output_stream_t *stream,
  466.                                        unsigned long          glyph_index,
  467.                                        cairo_box_t           *bbox,
  468.                                        double                *width)
  469. {
  470.     cairo_type3_glyph_surface_t *surface = abstract_surface;
  471.     cairo_scaled_glyph_t *scaled_glyph;
  472.     cairo_status_t status, status2;
  473.     double x_advance, y_advance;
  474.     cairo_matrix_t font_matrix_inverse;
  475.  
  476.     if (unlikely (surface->base.status))
  477.         return surface->base.status;
  478.  
  479.     _cairo_type3_glyph_surface_set_stream (surface, stream);
  480.  
  481.     _cairo_scaled_font_freeze_cache (surface->scaled_font);
  482.     status = _cairo_scaled_glyph_lookup (surface->scaled_font,
  483.                                          glyph_index,
  484.                                          CAIRO_SCALED_GLYPH_INFO_METRICS |
  485.                                          CAIRO_SCALED_GLYPH_INFO_RECORDING_SURFACE,
  486.                                          &scaled_glyph);
  487.     if (status == CAIRO_INT_STATUS_UNSUPPORTED) {
  488.         status = _cairo_scaled_glyph_lookup (surface->scaled_font,
  489.                                              glyph_index,
  490.                                              CAIRO_SCALED_GLYPH_INFO_METRICS,
  491.                                              &scaled_glyph);
  492.         if (status == CAIRO_STATUS_SUCCESS)
  493.             status = CAIRO_INT_STATUS_IMAGE_FALLBACK;
  494.     }
  495.     if (_cairo_status_is_error (status)) {
  496.         _cairo_scaled_font_thaw_cache (surface->scaled_font);
  497.         return status;
  498.     }
  499.  
  500.     x_advance = scaled_glyph->metrics.x_advance;
  501.     y_advance = scaled_glyph->metrics.y_advance;
  502.     font_matrix_inverse = surface->scaled_font->font_matrix;
  503.     status2 = cairo_matrix_invert (&font_matrix_inverse);
  504.  
  505.     /* The invertability of font_matrix is tested in
  506.      * pdf_operators_show_glyphs before any glyphs are mapped to the
  507.      * subset. */
  508.     assert (status2 == CAIRO_STATUS_SUCCESS);
  509.  
  510.     cairo_matrix_transform_distance (&font_matrix_inverse, &x_advance, &y_advance);
  511.     *width = x_advance;
  512.  
  513.     *bbox = scaled_glyph->bbox;
  514.     _cairo_matrix_transform_bounding_box_fixed (&surface->scaled_font->scale_inverse,
  515.                                                 bbox, NULL);
  516.  
  517.     _cairo_output_stream_printf (surface->stream,
  518.                                  "%f 0 %f %f %f %f d1\n",
  519.                                  x_advance,
  520.                                  _cairo_fixed_to_double (bbox->p1.x),
  521.                                  - _cairo_fixed_to_double (bbox->p2.y),
  522.                                  _cairo_fixed_to_double (bbox->p2.x),
  523.                                  - _cairo_fixed_to_double (bbox->p1.y));
  524.  
  525.     if (status == CAIRO_STATUS_SUCCESS) {
  526.         cairo_output_stream_t *mem_stream;
  527.  
  528.         mem_stream = _cairo_memory_stream_create ();
  529.         status = mem_stream->status;
  530.         if (unlikely (status))
  531.             goto FAIL;
  532.  
  533.         _cairo_type3_glyph_surface_set_stream (surface, mem_stream);
  534.  
  535.         _cairo_output_stream_printf (surface->stream, "q\n");
  536.         status = _cairo_recording_surface_replay (scaled_glyph->recording_surface,
  537.                                                   &surface->base);
  538.  
  539.         status2 = _cairo_pdf_operators_flush (&surface->pdf_operators);
  540.         if (status == CAIRO_STATUS_SUCCESS)
  541.             status = status2;
  542.  
  543.         _cairo_output_stream_printf (surface->stream, "Q\n");
  544.  
  545.         _cairo_type3_glyph_surface_set_stream (surface, stream);
  546.         if (status == CAIRO_STATUS_SUCCESS)
  547.             _cairo_memory_stream_copy (mem_stream, stream);
  548.  
  549.         status2 = _cairo_output_stream_destroy (mem_stream);
  550.         if (status == CAIRO_STATUS_SUCCESS)
  551.             status = status2;
  552.     }
  553.  
  554.     if (status == CAIRO_INT_STATUS_IMAGE_FALLBACK)
  555.         status = _cairo_type3_glyph_surface_emit_fallback_image (surface, glyph_index);
  556.  
  557.   FAIL:
  558.     _cairo_scaled_font_thaw_cache (surface->scaled_font);
  559.  
  560.     return status;
  561. }
  562.  
  563. #endif /* CAIRO_HAS_FONT_SUBSET */
  564.