src/test-null-compositor-surface.c - third_party/cairo - Git at Google

 /* cairo - a vector graphics library with display and print output
  *
  * Copyright © 2011 Intel Corporation
  *
  * This library is free software; you can redistribute it and/or
  * modify it either under the terms of the GNU Lesser General Public
  * License version 2.1 as published by the Free Software Foundation
  * (the "LGPL") or, at your option, under the terms of the Mozilla
  * Public License Version 1.1 (the "MPL"). If you do not alter this
  * notice, a recipient may use your version of this file under either
  * the MPL or the LGPL.
  *
  * You should have received a copy of the LGPL along with this library
  * in the file COPYING-LGPL-2.1; if not, write to the Free Software
  * Foundation, Inc., 51 Franklin Street, Suite 500, Boston, MA 02110-1335, USA
  * You should have received a copy of the MPL along with this library
  * in the file COPYING-MPL-1.1
  *
  * The contents of this file are subject to the Mozilla Public License
  * Version 1.1 (the "License"); you may not use this file except in
  * compliance with the License. You may obtain a copy of the License at
  * http://www.mozilla.org/MPL/
  *
  * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY
  * OF ANY KIND, either express or implied. See the LGPL or the MPL for
  * the specific language governing rights and limitations.
  *
  * The Original Code is the cairo graphics library.
  *
  * The Initial Developer of the Original Code is Intel Corporation
  *
  * Contributor(s):
  *	Chris Wilson <chris@chris-wilson.co.uk>
  */


 #include "cairoint.h"

 #include "test-null-compositor-surface.h"

 #include "cairo-compositor-private.h"
 #include "cairo-default-context-private.h"
 #include "cairo-error-private.h"
 #include "cairo-image-surface-private.h"
 #include "cairo-surface-backend-private.h"
 #include "cairo-spans-compositor-private.h"
 #include "cairo-spans-private.h"

 typedef struct _test_compositor_surface {
     cairo_image_surface_t base;
 } test_compositor_surface_t;

 static const cairo_surface_backend_t test_compositor_surface_backend;

 static cairo_surface_t *
 test_compositor_surface_create (const cairo_compositor_t *compositor,
 				cairo_content_t	content,
 				int		width,
 				int		height)
 {
     test_compositor_surface_t *surface;
     pixman_image_t *pixman_image;
     pixman_format_code_t pixman_format;

     switch (content) {
     case CAIRO_CONTENT_ALPHA:
 	pixman_format = PIXMAN_a8;
 	break;
     case CAIRO_CONTENT_COLOR:
 	pixman_format = PIXMAN_x8r8g8b8;
 	break;
     case CAIRO_CONTENT_COLOR_ALPHA:
 	pixman_format = PIXMAN_a8r8g8b8;
 	break;
     default:
 	return _cairo_surface_create_in_error (_cairo_error (CAIRO_STATUS_INVALID_CONTENT));
     }

     pixman_image = pixman_image_create_bits (pixman_format, width, height,
 					     NULL, 0);
     if (unlikely (pixman_image == NULL))
 	return _cairo_surface_create_in_error (_cairo_error (CAIRO_STATUS_NO_MEMORY));

     surface = malloc (sizeof (test_compositor_surface_t));
     if (unlikely (surface == NULL)) {
 	pixman_image_unref (pixman_image);
 	return _cairo_surface_create_in_error (_cairo_error (CAIRO_STATUS_NO_MEMORY));
     }

     _cairo_surface_init (&surface->base.base,
 			 &test_compositor_surface_backend,
 			 NULL, /* device */
 			 content);
     _cairo_image_surface_init (&surface->base, pixman_image, pixman_format);

     surface->base.compositor = compositor;

     return &surface->base.base;
 }

 static cairo_surface_t *
 test_compositor_surface_create_similar (void		*abstract_surface,
 					cairo_content_t	 content,
 					int		 width,
 					int		 height)
 {
     test_compositor_surface_t *surface = abstract_surface;

     return test_compositor_surface_create (surface->base.compositor,
 					   content, width, height);
 }

 static cairo_int_status_t
 test_compositor_surface_paint (void			*_surface,
 			       cairo_operator_t		 op,
 			       const cairo_pattern_t	*source,
 			       const cairo_clip_t	*clip)
 {
     test_compositor_surface_t *surface = _surface;
     return _cairo_compositor_paint (surface->base.compositor,
 				    _surface, op, source,
 				    clip);
 }

 static cairo_int_status_t
 test_compositor_surface_mask (void			*_surface,
 			      cairo_operator_t		 op,
 			      const cairo_pattern_t	*source,
 			      const cairo_pattern_t	*mask,
 			      const cairo_clip_t	*clip)
 {
     test_compositor_surface_t *surface = _surface;
     return _cairo_compositor_mask (surface->base.compositor,
 				   _surface, op, source, mask,
 				    clip);
 }

 static cairo_int_status_t
 test_compositor_surface_stroke (void				*_surface,
 				cairo_operator_t		 op,
 				const cairo_pattern_t		*source,
 				const cairo_path_fixed_t	*path,
 				const cairo_stroke_style_t	*style,
 				const cairo_matrix_t		*ctm,
 				const cairo_matrix_t		*ctm_inverse,
 				double				 tolerance,
 				cairo_antialias_t		 antialias,
 				const cairo_clip_t		*clip)
 {
     test_compositor_surface_t *surface = _surface;
     return _cairo_compositor_stroke (surface->base.compositor,
 				     _surface, op, source,
 				     path, style, ctm, ctm_inverse,
 				     tolerance, antialias,
 				     clip);
 }

 static cairo_int_status_t
 test_compositor_surface_fill (void			*_surface,
 			      cairo_operator_t		 op,
 			      const cairo_pattern_t	*source,
 			      const cairo_path_fixed_t	*path,
 			      cairo_fill_rule_t		 fill_rule,
 			      double			 tolerance,
 			      cairo_antialias_t		 antialias,
 			      const cairo_clip_t	*clip)
 {
     test_compositor_surface_t *surface = _surface;
     return _cairo_compositor_fill (surface->base.compositor,
 				   _surface, op, source,
 				   path, fill_rule, tolerance, antialias,
 				   clip);
 }

 static cairo_int_status_t
 test_compositor_surface_glyphs (void			*_surface,
 				cairo_operator_t	 op,
 				const cairo_pattern_t	*source,
 				cairo_glyph_t		*glyphs,
 				int			 num_glyphs,
 				cairo_scaled_font_t	*scaled_font,
 				const cairo_clip_t	*clip)
 {
     test_compositor_surface_t *surface = _surface;
     return _cairo_compositor_glyphs (surface->base.compositor,
 				     _surface, op, source,
 				     glyphs, num_glyphs, scaled_font,
 				     clip);
 }

 static const cairo_surface_backend_t test_compositor_surface_backend = {
     CAIRO_SURFACE_TYPE_IMAGE,
     _cairo_image_surface_finish,
     _cairo_default_context_create,

     test_compositor_surface_create_similar,
     NULL, /* create similar image */
     _cairo_image_surface_map_to_image,
     _cairo_image_surface_unmap_image,

     _cairo_image_surface_source,
     _cairo_image_surface_acquire_source_image,
     _cairo_image_surface_release_source_image,
     NULL, /* snapshot */

     NULL, /* copy_page */
     NULL, /* show_page */

     _cairo_image_surface_get_extents,
     _cairo_image_surface_get_font_options,

     NULL, /* flush */
     NULL, /* mark_dirty_rectangle */

     test_compositor_surface_paint,
     test_compositor_surface_mask,
     test_compositor_surface_stroke,
     test_compositor_surface_fill,
     NULL, /* fill/stroke */
     test_compositor_surface_glyphs,
 };

 static cairo_int_status_t
 acquire (void *abstract_dst)
 {
     return CAIRO_STATUS_SUCCESS;
 }

 static cairo_int_status_t
 release (void *abstract_dst)
 {
     return CAIRO_STATUS_SUCCESS;
 }

 static cairo_int_status_t
 set_clip_region (void *_surface,
 		 cairo_region_t *region)
 {
     return CAIRO_STATUS_SUCCESS;
 }

 static cairo_surface_t *
 pattern_to_surface (cairo_surface_t *dst,
 		    const cairo_pattern_t *pattern,
 		    cairo_bool_t is_mask,
 		    const cairo_rectangle_int_t *extents,
 		    const cairo_rectangle_int_t *sample,
 		    int *src_x, int *src_y)
 {
     return cairo_image_surface_create (CAIRO_FORMAT_ARGB32, 0, 0);
 }

 static cairo_int_status_t
 fill_boxes (void		*_dst,
 	    cairo_operator_t	 op,
 	    const cairo_color_t	*color,
 	    cairo_boxes_t	*boxes)
 {
     return CAIRO_STATUS_SUCCESS;
 }

 static cairo_int_status_t
 draw_image_boxes (void *_dst,
 		  cairo_image_surface_t *image,
 		  cairo_boxes_t *boxes,
 		  int dx, int dy)
 {
     return CAIRO_STATUS_SUCCESS;
 }

 static cairo_int_status_t
 composite (void			*_dst,
 	   cairo_operator_t	op,
 	   cairo_surface_t	*abstract_src,
 	   cairo_surface_t	*abstract_mask,
 	   int			src_x,
 	   int			src_y,
 	   int			mask_x,
 	   int			mask_y,
 	   int			dst_x,
 	   int			dst_y,
 	   unsigned int		width,
 	   unsigned int		height)
 {
     return CAIRO_STATUS_SUCCESS;
 }

 static cairo_int_status_t
 lerp (void			*_dst,
       cairo_surface_t		*abstract_src,
       cairo_surface_t		*abstract_mask,
       int			src_x,
       int			src_y,
       int			mask_x,
       int			mask_y,
       int			dst_x,
       int			dst_y,
       unsigned int		width,
       unsigned int		height)
 {
     return CAIRO_STATUS_SUCCESS;
 }

 static cairo_int_status_t
 composite_boxes (void			*_dst,
 		 cairo_operator_t	op,
 		 cairo_surface_t	*abstract_src,
 		 cairo_surface_t	*abstract_mask,
 		 int			src_x,
 		 int			src_y,
 		 int			mask_x,
 		 int			mask_y,
 		 int			dst_x,
 		 int			dst_y,
 		 cairo_boxes_t		*boxes,
 		 const cairo_rectangle_int_t  *extents)
 {
     return CAIRO_STATUS_SUCCESS;
 }

 static cairo_int_status_t
 composite_traps (void			*_dst,
 		 cairo_operator_t	op,
 		 cairo_surface_t	*abstract_src,
 		 int			src_x,
 		 int			src_y,
 		 int			dst_x,
 		 int			dst_y,
 		 const cairo_rectangle_int_t *extents,
 		 cairo_antialias_t	antialias,
 		 cairo_traps_t		*traps)
 {
     return CAIRO_STATUS_SUCCESS;
 }

 static cairo_int_status_t
 check_composite_glyphs (const cairo_composite_rectangles_t *extents,
 			cairo_scaled_font_t *scaled_font,
 			cairo_glyph_t *glyphs,
 			int *num_glyphs)
 {
     return CAIRO_STATUS_SUCCESS;
 }

 static cairo_int_status_t
 composite_glyphs (void				*_dst,
 		  cairo_operator_t		 op,
 		  cairo_surface_t		*_src,
 		  int				 src_x,
 		  int				 src_y,
 		  int				 dst_x,
 		  int				 dst_y,
 		  cairo_composite_glyphs_info_t *info)
 {
     return CAIRO_STATUS_SUCCESS;
 }

 static cairo_status_t
 spans (void *abstract_renderer,
        int y, int height,
        const cairo_half_open_span_t *spans,
        unsigned num_spans)
 {
     return CAIRO_STATUS_SUCCESS;
 }

 static cairo_status_t
 finish_spans (void *abstract_renderer)
 {
     return CAIRO_STATUS_SUCCESS;
 }

 static cairo_int_status_t
 span_renderer_init (cairo_abstract_span_renderer_t	*_r,
 		    const cairo_composite_rectangles_t *composite,
 		    cairo_antialias_t			antialias,
 		    cairo_bool_t			needs_clip)
 {
     cairo_span_renderer_t *r = (cairo_span_renderer_t *)_r;
     r->render_rows = spans;
     r->finish = finish_spans;
     return CAIRO_STATUS_SUCCESS;
 }

 static void
 span_renderer_fini (cairo_abstract_span_renderer_t *_r,
 		    cairo_int_status_t status)
 {
 }

 static const cairo_compositor_t *
 no_fallback_compositor_get (void)
 {
     return &__cairo_no_compositor;
 }

 static cairo_int_status_t
 check_composite (const cairo_composite_rectangles_t *extents)
 {
     return CAIRO_STATUS_SUCCESS;
 }

 static const cairo_compositor_t *
 no_traps_compositor_get (void)
 {
     static cairo_traps_compositor_t compositor;

     if (compositor.base.delegate == NULL) {
 	_cairo_traps_compositor_init (&compositor,
 				      no_fallback_compositor_get ());

 	compositor.acquire = acquire;
 	compositor.release = release;
 	compositor.set_clip_region = set_clip_region;
 	compositor.pattern_to_surface = pattern_to_surface;
 	compositor.draw_image_boxes = draw_image_boxes;
 	//compositor.copy_boxes = copy_boxes;
 	compositor.fill_boxes = fill_boxes;
 	compositor.check_composite = check_composite;
 	compositor.composite = composite;
 	compositor.lerp = lerp;
 	//compositor.check_composite_boxes = check_composite_boxes;
 	compositor.composite_boxes = composite_boxes;
 	//compositor.check_composite_traps = check_composite_traps;
 	compositor.composite_traps = composite_traps;
 	compositor.check_composite_glyphs = check_composite_glyphs;
 	compositor.composite_glyphs = composite_glyphs;
     }

     return &compositor.base;
 }

 static const cairo_compositor_t *
 no_spans_compositor_get (void)
 {
     static cairo_spans_compositor_t compositor;

     if (compositor.base.delegate == NULL) {
 	_cairo_spans_compositor_init (&compositor,
 				      no_traps_compositor_get());

 	//compositor.acquire = acquire;
 	//compositor.release = release;
 	compositor.fill_boxes = fill_boxes;
 	//compositor.check_composite_boxes = check_composite_boxes;
 	compositor.composite_boxes = composite_boxes;
 	//compositor.check_span_renderer = check_span_renderer;
 	compositor.renderer_init = span_renderer_init;
 	compositor.renderer_fini = span_renderer_fini;
     }

     return &compositor.base;
 }

 cairo_surface_t *
 _cairo_test_no_fallback_compositor_surface_create (cairo_content_t	content,
 						   int		width,
 						   int		height)
 {
     return test_compositor_surface_create (no_fallback_compositor_get(),
 					   content, width, height);
 }

 cairo_surface_t *
 _cairo_test_no_traps_compositor_surface_create (cairo_content_t	content,
 						int		width,
 						int		height)
 {
     return test_compositor_surface_create (no_traps_compositor_get(),
 					   content, width, height);
 }

 cairo_surface_t *
 _cairo_test_no_spans_compositor_surface_create (cairo_content_t	content,
 					     int		width,
 					     int		height)
 {
     return test_compositor_surface_create (no_spans_compositor_get(),
 					   content, width, height);
 }
	/* cairo - a vector graphics library with display and print output
	*
	* Copyright © 2011 Intel Corporation
	*
	* This library is free software; you can redistribute it and/or
	* modify it either under the terms of the GNU Lesser General Public
	* License version 2.1 as published by the Free Software Foundation
	* (the "LGPL") or, at your option, under the terms of the Mozilla
	* Public License Version 1.1 (the "MPL"). If you do not alter this
	* notice, a recipient may use your version of this file under either
	* the MPL or the LGPL.
	*
	* You should have received a copy of the LGPL along with this library
	* in the file COPYING-LGPL-2.1; if not, write to the Free Software
	* Foundation, Inc., 51 Franklin Street, Suite 500, Boston, MA 02110-1335, USA
	* You should have received a copy of the MPL along with this library
	* in the file COPYING-MPL-1.1
	*
	* The contents of this file are subject to the Mozilla Public License
	* Version 1.1 (the "License"); you may not use this file except in
	* compliance with the License. You may obtain a copy of the License at
	* http://www.mozilla.org/MPL/
	*
	* This software is distributed on an "AS IS" basis, WITHOUT WARRANTY
	* OF ANY KIND, either express or implied. See the LGPL or the MPL for
	* the specific language governing rights and limitations.
	*
	* The Original Code is the cairo graphics library.
	*
	* The Initial Developer of the Original Code is Intel Corporation
	*
	* Contributor(s):
	* Chris Wilson <chris@chris-wilson.co.uk>
	*/


	#include "cairoint.h"

	#include "test-null-compositor-surface.h"

	#include "cairo-compositor-private.h"
	#include "cairo-default-context-private.h"
	#include "cairo-error-private.h"
	#include "cairo-image-surface-private.h"
	#include "cairo-surface-backend-private.h"
	#include "cairo-spans-compositor-private.h"
	#include "cairo-spans-private.h"

	typedef struct _test_compositor_surface {
	cairo_image_surface_t base;
	} test_compositor_surface_t;

	static const cairo_surface_backend_t test_compositor_surface_backend;

	static cairo_surface_t *
	test_compositor_surface_create (const cairo_compositor_t *compositor,
	cairo_content_t content,
	int width,
	int height)
	{
	test_compositor_surface_t *surface;
	pixman_image_t *pixman_image;
	pixman_format_code_t pixman_format;

	switch (content) {
	case CAIRO_CONTENT_ALPHA:
	pixman_format = PIXMAN_a8;
	break;
	case CAIRO_CONTENT_COLOR:
	pixman_format = PIXMAN_x8r8g8b8;
	break;
	case CAIRO_CONTENT_COLOR_ALPHA:
	pixman_format = PIXMAN_a8r8g8b8;
	break;
	default:
	return _cairo_surface_create_in_error (_cairo_error (CAIRO_STATUS_INVALID_CONTENT));
	}

	pixman_image = pixman_image_create_bits (pixman_format, width, height,
	NULL, 0);
	if (unlikely (pixman_image == NULL))
	return _cairo_surface_create_in_error (_cairo_error (CAIRO_STATUS_NO_MEMORY));

	surface = malloc (sizeof (test_compositor_surface_t));
	if (unlikely (surface == NULL)) {
	pixman_image_unref (pixman_image);
	return _cairo_surface_create_in_error (_cairo_error (CAIRO_STATUS_NO_MEMORY));
	}

	_cairo_surface_init (&surface->base.base,
	&test_compositor_surface_backend,
	NULL, /* device */
	content);
	_cairo_image_surface_init (&surface->base, pixman_image, pixman_format);

	surface->base.compositor = compositor;

	return &surface->base.base;
	}

	static cairo_surface_t *
	test_compositor_surface_create_similar (void *abstract_surface,
	cairo_content_t content,
	int width,
	int height)
	{
	test_compositor_surface_t *surface = abstract_surface;

	return test_compositor_surface_create (surface->base.compositor,
	content, width, height);
	}

	static cairo_int_status_t
	test_compositor_surface_paint (void *_surface,
	cairo_operator_t op,
	const cairo_pattern_t *source,
	const cairo_clip_t *clip)
	{
	test_compositor_surface_t *surface = _surface;
	return _cairo_compositor_paint (surface->base.compositor,
	_surface, op, source,
	clip);
	}

	static cairo_int_status_t
	test_compositor_surface_mask (void *_surface,
	cairo_operator_t op,
	const cairo_pattern_t *source,
	const cairo_pattern_t *mask,
	const cairo_clip_t *clip)
	{
	test_compositor_surface_t *surface = _surface;
	return _cairo_compositor_mask (surface->base.compositor,
	_surface, op, source, mask,
	clip);
	}

	static cairo_int_status_t
	test_compositor_surface_stroke (void *_surface,
	cairo_operator_t op,
	const cairo_pattern_t *source,
	const cairo_path_fixed_t *path,
	const cairo_stroke_style_t *style,
	const cairo_matrix_t *ctm,
	const cairo_matrix_t *ctm_inverse,
	double tolerance,
	cairo_antialias_t antialias,
	const cairo_clip_t *clip)
	{
	test_compositor_surface_t *surface = _surface;
	return _cairo_compositor_stroke (surface->base.compositor,
	_surface, op, source,
	path, style, ctm, ctm_inverse,
	tolerance, antialias,
	clip);
	}

	static cairo_int_status_t
	test_compositor_surface_fill (void *_surface,
	cairo_operator_t op,
	const cairo_pattern_t *source,
	const cairo_path_fixed_t *path,
	cairo_fill_rule_t fill_rule,
	double tolerance,
	cairo_antialias_t antialias,
	const cairo_clip_t *clip)
	{
	test_compositor_surface_t *surface = _surface;
	return _cairo_compositor_fill (surface->base.compositor,
	_surface, op, source,
	path, fill_rule, tolerance, antialias,
	clip);
	}

	static cairo_int_status_t
	test_compositor_surface_glyphs (void *_surface,
	cairo_operator_t op,
	const cairo_pattern_t *source,
	cairo_glyph_t *glyphs,
	int num_glyphs,
	cairo_scaled_font_t *scaled_font,
	const cairo_clip_t *clip)
	{
	test_compositor_surface_t *surface = _surface;
	return _cairo_compositor_glyphs (surface->base.compositor,
	_surface, op, source,
	glyphs, num_glyphs, scaled_font,
	clip);
	}

	static const cairo_surface_backend_t test_compositor_surface_backend = {
	CAIRO_SURFACE_TYPE_IMAGE,
	_cairo_image_surface_finish,
	_cairo_default_context_create,

	test_compositor_surface_create_similar,
	NULL, /* create similar image */
	_cairo_image_surface_map_to_image,
	_cairo_image_surface_unmap_image,

	_cairo_image_surface_source,
	_cairo_image_surface_acquire_source_image,
	_cairo_image_surface_release_source_image,
	NULL, /* snapshot */

	NULL, /* copy_page */
	NULL, /* show_page */

	_cairo_image_surface_get_extents,
	_cairo_image_surface_get_font_options,

	NULL, /* flush */
	NULL, /* mark_dirty_rectangle */

	test_compositor_surface_paint,
	test_compositor_surface_mask,
	test_compositor_surface_stroke,
	test_compositor_surface_fill,
	NULL, /* fill/stroke */
	test_compositor_surface_glyphs,
	};

	static cairo_int_status_t
	acquire (void *abstract_dst)
	{
	return CAIRO_STATUS_SUCCESS;
	}

	static cairo_int_status_t
	release (void *abstract_dst)
	{
	return CAIRO_STATUS_SUCCESS;
	}

	static cairo_int_status_t
	set_clip_region (void *_surface,
	cairo_region_t *region)
	{
	return CAIRO_STATUS_SUCCESS;
	}

	static cairo_surface_t *
	pattern_to_surface (cairo_surface_t *dst,
	const cairo_pattern_t *pattern,
	cairo_bool_t is_mask,
	const cairo_rectangle_int_t *extents,
	const cairo_rectangle_int_t *sample,
	int src_x, int src_y)
	{
	return cairo_image_surface_create (CAIRO_FORMAT_ARGB32, 0, 0);
	}

	static cairo_int_status_t
	fill_boxes (void *_dst,
	cairo_operator_t op,
	const cairo_color_t *color,
	cairo_boxes_t *boxes)
	{
	return CAIRO_STATUS_SUCCESS;
	}

	static cairo_int_status_t
	draw_image_boxes (void *_dst,
	cairo_image_surface_t *image,
	cairo_boxes_t *boxes,
	int dx, int dy)
	{
	return CAIRO_STATUS_SUCCESS;
	}

	static cairo_int_status_t
	composite (void *_dst,
	cairo_operator_t op,
	cairo_surface_t *abstract_src,
	cairo_surface_t *abstract_mask,
	int src_x,
	int src_y,
	int mask_x,
	int mask_y,
	int dst_x,
	int dst_y,
	unsigned int width,
	unsigned int height)
	{
	return CAIRO_STATUS_SUCCESS;
	}

	static cairo_int_status_t
	lerp (void *_dst,
	cairo_surface_t *abstract_src,
	cairo_surface_t *abstract_mask,
	int src_x,
	int src_y,
	int mask_x,
	int mask_y,
	int dst_x,
	int dst_y,
	unsigned int width,
	unsigned int height)
	{
	return CAIRO_STATUS_SUCCESS;
	}

	static cairo_int_status_t
	composite_boxes (void *_dst,
	cairo_operator_t op,
	cairo_surface_t *abstract_src,
	cairo_surface_t *abstract_mask,
	int src_x,
	int src_y,
	int mask_x,
	int mask_y,
	int dst_x,
	int dst_y,
	cairo_boxes_t *boxes,
	const cairo_rectangle_int_t *extents)
	{
	return CAIRO_STATUS_SUCCESS;
	}

	static cairo_int_status_t
	composite_traps (void *_dst,
	cairo_operator_t op,
	cairo_surface_t *abstract_src,
	int src_x,
	int src_y,
	int dst_x,
	int dst_y,
	const cairo_rectangle_int_t *extents,
	cairo_antialias_t antialias,
	cairo_traps_t *traps)
	{
	return CAIRO_STATUS_SUCCESS;
	}

	static cairo_int_status_t
	check_composite_glyphs (const cairo_composite_rectangles_t *extents,
	cairo_scaled_font_t *scaled_font,
	cairo_glyph_t *glyphs,
	int *num_glyphs)
	{
	return CAIRO_STATUS_SUCCESS;
	}

	static cairo_int_status_t
	composite_glyphs (void *_dst,
	cairo_operator_t op,
	cairo_surface_t *_src,
	int src_x,
	int src_y,
	int dst_x,
	int dst_y,
	cairo_composite_glyphs_info_t *info)
	{
	return CAIRO_STATUS_SUCCESS;
	}

	static cairo_status_t
	spans (void *abstract_renderer,
	int y, int height,
	const cairo_half_open_span_t *spans,
	unsigned num_spans)
	{
	return CAIRO_STATUS_SUCCESS;
	}

	static cairo_status_t
	finish_spans (void *abstract_renderer)
	{
	return CAIRO_STATUS_SUCCESS;
	}

	static cairo_int_status_t
	span_renderer_init (cairo_abstract_span_renderer_t *_r,
	const cairo_composite_rectangles_t *composite,
	cairo_antialias_t antialias,
	cairo_bool_t needs_clip)
	{
	cairo_span_renderer_t r = (cairo_span_renderer_t )_r;
	r->render_rows = spans;
	r->finish = finish_spans;
	return CAIRO_STATUS_SUCCESS;
	}

	static void
	span_renderer_fini (cairo_abstract_span_renderer_t *_r,
	cairo_int_status_t status)
	{
	}

	static const cairo_compositor_t *
	no_fallback_compositor_get (void)
	{
	return &__cairo_no_compositor;
	}

	static cairo_int_status_t
	check_composite (const cairo_composite_rectangles_t *extents)
	{
	return CAIRO_STATUS_SUCCESS;
	}

	static const cairo_compositor_t *
	no_traps_compositor_get (void)
	{
	static cairo_traps_compositor_t compositor;

	if (compositor.base.delegate == NULL) {
	_cairo_traps_compositor_init (&compositor,
	no_fallback_compositor_get ());

	compositor.acquire = acquire;
	compositor.release = release;
	compositor.set_clip_region = set_clip_region;
	compositor.pattern_to_surface = pattern_to_surface;
	compositor.draw_image_boxes = draw_image_boxes;
	//compositor.copy_boxes = copy_boxes;
	compositor.fill_boxes = fill_boxes;
	compositor.check_composite = check_composite;
	compositor.composite = composite;
	compositor.lerp = lerp;
	//compositor.check_composite_boxes = check_composite_boxes;
	compositor.composite_boxes = composite_boxes;
	//compositor.check_composite_traps = check_composite_traps;
	compositor.composite_traps = composite_traps;
	compositor.check_composite_glyphs = check_composite_glyphs;
	compositor.composite_glyphs = composite_glyphs;
	}

	return &compositor.base;
	}

	static const cairo_compositor_t *
	no_spans_compositor_get (void)
	{
	static cairo_spans_compositor_t compositor;

	if (compositor.base.delegate == NULL) {
	_cairo_spans_compositor_init (&compositor,
	no_traps_compositor_get());

	//compositor.acquire = acquire;
	//compositor.release = release;
	compositor.fill_boxes = fill_boxes;
	//compositor.check_composite_boxes = check_composite_boxes;
	compositor.composite_boxes = composite_boxes;
	//compositor.check_span_renderer = check_span_renderer;
	compositor.renderer_init = span_renderer_init;
	compositor.renderer_fini = span_renderer_fini;
	}

	return &compositor.base;
	}

	cairo_surface_t *
	_cairo_test_no_fallback_compositor_surface_create (cairo_content_t content,
	int width,
	int height)
	{
	return test_compositor_surface_create (no_fallback_compositor_get(),
	content, width, height);
	}

	cairo_surface_t *
	_cairo_test_no_traps_compositor_surface_create (cairo_content_t content,
	int width,
	int height)
	{
	return test_compositor_surface_create (no_traps_compositor_get(),
	content, width, height);
	}

	cairo_surface_t *
	_cairo_test_no_spans_compositor_surface_create (cairo_content_t content,
	int width,
	int height)
	{
	return test_compositor_surface_create (no_spans_compositor_get(),
	content, width, height);
	}