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  1. /* -*- Mode: c; tab-width: 8; c-basic-offset: 4; indent-tabs-mode: t; -*- */
  2. /* cairo - a vector graphics library with display and print output
  3.  *
  4.  * Copyright © 2002 University of Southern California
  5.  * Copyright © 2005 Red Hat, Inc.
  6.  * Copyright © 2011 Intel Corporation
  7.  *
  8.  * This library is free software; you can redistribute it and/or
  9.  * modify it either under the terms of the GNU Lesser General Public
  10.  * License version 2.1 as published by the Free Software Foundation
  11.  * (the "LGPL") or, at your option, under the terms of the Mozilla
  12.  * Public License Version 1.1 (the "MPL"). If you do not alter this
  13.  * notice, a recipient may use your version of this file under either
  14.  * the MPL or the LGPL.
  15.  *
  16.  * You should have received a copy of the LGPL along with this library
  17.  * in the file COPYING-LGPL-2.1; if not, write to the Free Software
  18.  * Foundation, Inc., 51 Franklin Street, Suite 500, Boston, MA 02110-1335, USA
  19.  * You should have received a copy of the MPL along with this library
  20.  * in the file COPYING-MPL-1.1
  21.  *
  22.  * The contents of this file are subject to the Mozilla Public License
  23.  * Version 1.1 (the "License"); you may not use this file except in
  24.  * compliance with the License. You may obtain a copy of the License at
  25.  * http://www.mozilla.org/MPL/
  26.  *
  27.  * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY
  28.  * OF ANY KIND, either express or implied. See the LGPL or the MPL for
  29.  * the specific language governing rights and limitations.
  30.  *
  31.  * The Original Code is the cairo graphics library.
  32.  *
  33.  * The Initial Developer of the Original Code is University of Southern
  34.  * California.
  35.  *
  36.  * Contributor(s):
  37.  *      Carl D. Worth <cworth@cworth.org>
  38.  *      Joonas Pihlaja <jpihlaja@cc.helsinki.fi>
  39.  *      Chris Wilson <chris@chris-wilson.co.uk>
  40.  */
  41.  
  42. #include "cairoint.h"
  43.  
  44. #include "cairo-compositor-private.h"
  45. #include "cairo-image-surface-private.h"
  46. #include "cairo-surface-offset-private.h"
  47.  
  48. /* high-level compositor interface */
  49.  
  50. static cairo_int_status_t
  51. _cairo_fallback_compositor_paint (const cairo_compositor_t      *_compositor,
  52.                                   cairo_composite_rectangles_t  *extents)
  53. {
  54.     cairo_image_surface_t *image;
  55.     cairo_int_status_t status;
  56.  
  57.     TRACE ((stderr, "%s\n", __FUNCTION__));
  58.  
  59.     image = _cairo_surface_map_to_image (extents->surface, &extents->unbounded);
  60.  
  61.     status = _cairo_surface_offset_paint (&image->base,
  62.                                           extents->unbounded.x,
  63.                                           extents->unbounded.y,
  64.                                           extents->op,
  65.                                           &extents->source_pattern.base,
  66.                                           extents->clip);
  67.  
  68.     return _cairo_surface_unmap_image (extents->surface, image);
  69. }
  70.  
  71. static cairo_int_status_t
  72. _cairo_fallback_compositor_mask (const cairo_compositor_t       *_compositor,
  73.                                  cairo_composite_rectangles_t   *extents)
  74. {
  75.     cairo_image_surface_t *image;
  76.     cairo_int_status_t status;
  77.  
  78.     TRACE ((stderr, "%s\n", __FUNCTION__));
  79.  
  80.     image = _cairo_surface_map_to_image (extents->surface, &extents->unbounded);
  81.  
  82.     status = _cairo_surface_offset_mask (&image->base,
  83.                                          extents->unbounded.x,
  84.                                          extents->unbounded.y,
  85.                                          extents->op,
  86.                                          &extents->source_pattern.base,
  87.                                          &extents->mask_pattern.base,
  88.                                          extents->clip);
  89.  
  90.     return _cairo_surface_unmap_image (extents->surface, image);
  91. }
  92.  
  93. static cairo_int_status_t
  94. _cairo_fallback_compositor_stroke (const cairo_compositor_t     *_compositor,
  95.                                    cairo_composite_rectangles_t *extents,
  96.                                    const cairo_path_fixed_t     *path,
  97.                                    const cairo_stroke_style_t   *style,
  98.                                    const cairo_matrix_t         *ctm,
  99.                                    const cairo_matrix_t         *ctm_inverse,
  100.                                    double                        tolerance,
  101.                                    cairo_antialias_t             antialias)
  102. {
  103.     cairo_image_surface_t *image;
  104.     cairo_int_status_t status;
  105.  
  106.     TRACE ((stderr, "%s\n", __FUNCTION__));
  107.  
  108.     image = _cairo_surface_map_to_image (extents->surface, &extents->unbounded);
  109.  
  110.     status = _cairo_surface_offset_stroke (&image->base,
  111.                                            extents->unbounded.x,
  112.                                            extents->unbounded.y,
  113.                                            extents->op,
  114.                                            &extents->source_pattern.base,
  115.                                            path, style,
  116.                                            ctm, ctm_inverse,
  117.                                            tolerance,
  118.                                            antialias,
  119.                                            extents->clip);
  120.  
  121.     return _cairo_surface_unmap_image (extents->surface, image);
  122. }
  123.  
  124. static cairo_int_status_t
  125. _cairo_fallback_compositor_fill (const cairo_compositor_t       *_compositor,
  126.                                  cairo_composite_rectangles_t *extents,
  127.                                  const cairo_path_fixed_t       *path,
  128.                                  cairo_fill_rule_t               fill_rule,
  129.                                  double                          tolerance,
  130.                                  cairo_antialias_t               antialias)
  131. {
  132.     cairo_image_surface_t *image;
  133.     cairo_int_status_t status;
  134.  
  135.     TRACE ((stderr, "%s\n", __FUNCTION__));
  136.  
  137.     image = _cairo_surface_map_to_image (extents->surface, &extents->unbounded);
  138.  
  139.     status = _cairo_surface_offset_fill (&image->base,
  140.                                          extents->unbounded.x,
  141.                                          extents->unbounded.y,
  142.                                          extents->op,
  143.                                          &extents->source_pattern.base,
  144.                                          path,
  145.                                          fill_rule, tolerance, antialias,
  146.                                          extents->clip);
  147.  
  148.     return _cairo_surface_unmap_image (extents->surface, image);
  149. }
  150.  
  151. static cairo_int_status_t
  152. _cairo_fallback_compositor_glyphs (const cairo_compositor_t     *_compositor,
  153.                                    cairo_composite_rectangles_t *extents,
  154.                                    cairo_scaled_font_t          *scaled_font,
  155.                                    cairo_glyph_t                *glyphs,
  156.                                    int                           num_glyphs,
  157.                                    cairo_bool_t                  overlap)
  158. {
  159.     cairo_image_surface_t *image;
  160.     cairo_int_status_t status;
  161.  
  162.     TRACE ((stderr, "%s\n", __FUNCTION__));
  163.  
  164.     image = _cairo_surface_map_to_image (extents->surface, &extents->unbounded);
  165.  
  166.     status = _cairo_surface_offset_glyphs (&image->base,
  167.                                            extents->unbounded.x,
  168.                                            extents->unbounded.y,
  169.                                            extents->op,
  170.                                            &extents->source_pattern.base,
  171.                                            scaled_font, glyphs, num_glyphs,
  172.                                            extents->clip);
  173.  
  174.     return _cairo_surface_unmap_image (extents->surface, image);
  175. }
  176.  
  177. const cairo_compositor_t _cairo_fallback_compositor = {
  178.      &__cairo_no_compositor,
  179.  
  180.      _cairo_fallback_compositor_paint,
  181.      _cairo_fallback_compositor_mask,
  182.      _cairo_fallback_compositor_stroke,
  183.      _cairo_fallback_compositor_fill,
  184.      _cairo_fallback_compositor_glyphs,
  185. };
  186.