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-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 };