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  1. /* cairo - a vector graphics library with display and print output
  2.  *
  3.  * Copyright © 2002 University of Southern California
  4.  * Copyright © 2005 Red Hat, Inc.
  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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 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 University of Southern
  32.  * California.
  33.  *
  34.  * Contributor(s):
  35.  *      Carl D. Worth <cworth@cworth.org>
  36.  */
  37.  
  38. #ifndef CAIRO_IMAGE_SURFACE_INLINE_H
  39. #define CAIRO_IMAGE_SURFACE_INLINE_H
  40.  
  41. #include "cairo-surface-private.h"
  42. #include "cairo-image-surface-private.h"
  43.  
  44. CAIRO_BEGIN_DECLS
  45.  
  46. static inline cairo_image_surface_t *
  47. _cairo_image_surface_create_in_error (cairo_status_t status)
  48. {
  49.     return (cairo_image_surface_t *) _cairo_surface_create_in_error (status);
  50. }
  51.  
  52. static inline void
  53. _cairo_image_surface_set_parent (cairo_image_surface_t *image,
  54.                                  cairo_surface_t *parent)
  55. {
  56.     image->parent = parent;
  57. }
  58.  
  59. static inline cairo_bool_t
  60. _cairo_image_surface_is_clone (cairo_image_surface_t *image)
  61. {
  62.     return image->parent != NULL;
  63. }
  64.  
  65. /**
  66.  * _cairo_surface_is_image:
  67.  * @surface: a #cairo_surface_t
  68.  *
  69.  * Checks if a surface is an #cairo_image_surface_t
  70.  *
  71.  * Return value: %TRUE if the surface is an image surface
  72.  **/
  73. static inline cairo_bool_t
  74. _cairo_surface_is_image (const cairo_surface_t *surface)
  75. {
  76.     /* _cairo_surface_nil sets a NULL backend so be safe */
  77.     return surface->backend && surface->backend->type == CAIRO_SURFACE_TYPE_IMAGE;
  78. }
  79.  
  80. /**
  81.  * _cairo_surface_is_image_source:
  82.  * @surface: a #cairo_surface_t
  83.  *
  84.  * Checks if a surface is an #cairo_image_source_t
  85.  *
  86.  * Return value: %TRUE if the surface is an image source
  87.  **/
  88. static inline cairo_bool_t
  89. _cairo_surface_is_image_source (const cairo_surface_t *surface)
  90. {
  91.     return surface->backend == &_cairo_image_source_backend;
  92. }
  93.  
  94. CAIRO_END_DECLS
  95.  
  96. #endif /* CAIRO_IMAGE_SURFACE_INLINE_H */
  97.