src/cairo-fallback-compositor.c

   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-surface-offset-private.h"
  46
  47 /* high-level compositor interface */
  48
  49 static cairo_int_status_t
  50 _cairo_fallback_compositor_paint (const cairo_compositor_t      *_compositor,
  51                                   cairo_composite_rectangles_t  *extents)
  52 {
  53     cairo_surface_t *image;
  54     cairo_int_status_t status;
  55
  56     TRACE ((stderr, "%s\n", __FUNCTION__));
  57     image = cairo_surface_map_to_image (extents->surface, &extents->unbounded);
  58     status = _cairo_surface_offset_paint (image,
  59                                           extents->unbounded.x,
  60                                           extents->unbounded.y,
  61                                           extents->op,
  62                                           &extents->source_pattern.base,
  63                                           extents->clip);
  64     cairo_surface_unmap_image (extents->surface, image);
  65
  66     return status;
  67 }
  68
  69 static cairo_int_status_t
  70 _cairo_fallback_compositor_mask (const cairo_compositor_t       *_compositor,
  71                                  cairo_composite_rectangles_t   *extents)
  72 {
  73     cairo_surface_t *image;
  74     cairo_int_status_t status;
  75
  76     TRACE ((stderr, "%s\n", __FUNCTION__));
  77     image = cairo_surface_map_to_image (extents->surface, &extents->unbounded);
  78     status = _cairo_surface_offset_mask (image,
  79                                          extents->unbounded.x,
  80                                          extents->unbounded.y,
  81                                          extents->op,
  82                                          &extents->source_pattern.base,
  83                                          &extents->mask_pattern.base,
  84                                          extents->clip);
  85     cairo_surface_unmap_image (extents->surface, image);
  86
  87     return status;
  88 }
  89
  90 static cairo_int_status_t
  91 _cairo_fallback_compositor_stroke (const cairo_compositor_t     *_compositor,
  92                                    cairo_composite_rectangles_t *extents,
  93                                    const cairo_path_fixed_t     *path,
  94                                    const cairo_stroke_style_t   *style,
  95                                    const cairo_matrix_t         *ctm,
  96                                    const cairo_matrix_t         *ctm_inverse,
  97                                    double                        tolerance,
  98                                    cairo_antialias_t             antialias)
  99 {
 100     cairo_surface_t *image;
 101     cairo_int_status_t status;
 102
 103     TRACE ((stderr, "%s\n", __FUNCTION__));
 104     image = cairo_surface_map_to_image (extents->surface, &extents->unbounded);
 105     status = _cairo_surface_offset_stroke (image,
 106                                            extents->unbounded.x,
 107                                            extents->unbounded.y,
 108                                            extents->op,
 109                                            &extents->source_pattern.base,
 110                                            path, style,
 111                                            ctm, ctm_inverse,
 112                                            tolerance,
 113                                            antialias,
 114                                            extents->clip);
 115     cairo_surface_unmap_image (extents->surface, image);
 116
 117     return status;
 118 }
 119
 120 static cairo_int_status_t
 121 _cairo_fallback_compositor_fill (const cairo_compositor_t       *_compositor,
 122                                  cairo_composite_rectangles_t *extents,
 123                                  const cairo_path_fixed_t       *path,
 124                                  cairo_fill_rule_t               fill_rule,
 125                                  double                          tolerance,
 126                                  cairo_antialias_t               antialias)
 127 {
 128     cairo_surface_t *image;
 129     cairo_int_status_t status;
 130
 131     TRACE ((stderr, "%s\n", __FUNCTION__));
 132     image = cairo_surface_map_to_image (extents->surface, &extents->unbounded);
 133     status = _cairo_surface_offset_fill (image,
 134                                          extents->unbounded.x,
 135                                          extents->unbounded.y,
 136                                          extents->op,
 137                                          &extents->source_pattern.base,
 138                                          path,
 139                                          fill_rule, tolerance, antialias,
 140                                          extents->clip);
 141     cairo_surface_unmap_image (extents->surface, image);
 142
 143     return status;
 144 }
 145
 146 static cairo_int_status_t
 147 _cairo_fallback_compositor_glyphs (const cairo_compositor_t     *_compositor,
 148                                    cairo_composite_rectangles_t *extents,
 149                                    cairo_scaled_font_t          *scaled_font,
 150                                    cairo_glyph_t                *glyphs,
 151                                    int                           num_glyphs,
 152                                    cairo_bool_t                  overlap)
 153 {
 154     cairo_surface_t *image;
 155     cairo_int_status_t status;
 156
 157     TRACE ((stderr, "%s\n", __FUNCTION__));
 158     image = cairo_surface_map_to_image (extents->surface, &extents->unbounded);
 159     status = _cairo_surface_offset_glyphs (image,
 160                                            extents->unbounded.x,
 161                                            extents->unbounded.y,
 162                                            extents->op,
 163                                            &extents->source_pattern.base,
 164                                            scaled_font, glyphs, num_glyphs,
 165                                            extents->clip);
 166     cairo_surface_unmap_image (extents->surface, image);
 167
 168     return status;
 169 }
 170
 171 const cairo_compositor_t _cairo_fallback_compositor = {
 172      &__cairo_no_compositor,
 173
 174      _cairo_fallback_compositor_paint,
 175      _cairo_fallback_compositor_mask,
 176      _cairo_fallback_compositor_stroke,
 177      _cairo_fallback_compositor_fill,
 178      _cairo_fallback_compositor_glyphs,
 179 };