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/* cairo - a vector graphics library with display and print output
*
* Copyright © 2009 Chris Wilson
*
* 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.
*
* Contributor(s):
* Chris Wilson <chris@chris-wilson.co.uk>
*/
/* This isn't a "real" surface, but just something to be used by the
* test suite to test a mythical backend that does nothing, i.e. it
* solely useful for measuring the overhead of the cairo public API.
*/
#include "cairoint.h"
#include "test-null-surface.h"
#include "cairo-error-private.h"
slim_hidden_proto (_cairo_test_null_surface_create);
static cairo_int_status_t
_return_success (void)
{
return CAIRO_STATUS_SUCCESS;
}
/* These typedefs are just to silence the compiler... */
typedef cairo_int_status_t
(*_paint_func) (void *surface,
cairo_operator_t op,
const cairo_pattern_t *source,
cairo_clip_t *clip);
typedef cairo_int_status_t
(*_mask_func) (void *surface,
cairo_operator_t op,
const cairo_pattern_t *source,
const cairo_pattern_t *mask,
cairo_clip_t *clip);
typedef cairo_int_status_t
(*_stroke_func) (void *surface,
cairo_operator_t op,
const cairo_pattern_t *source,
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,
cairo_clip_t *clip);
typedef cairo_int_status_t
(*_fill_func) (void *surface,
cairo_operator_t op,
const cairo_pattern_t *source,
cairo_path_fixed_t *path,
cairo_fill_rule_t fill_rule,
double tolerance,
cairo_antialias_t antialias,
cairo_clip_t *clip);
typedef cairo_int_status_t
(*_show_glyphs_func) (void *surface,
cairo_operator_t op,
const cairo_pattern_t *source,
cairo_glyph_t *glyphs,
int num_glyphs,
cairo_scaled_font_t *scaled_font,
cairo_clip_t *clip,
int *remaining_glyphs);
typedef cairo_int_status_t
(*_show_text_glyphs_func) (void *surface,
cairo_operator_t op,
const cairo_pattern_t *source,
const char *utf8,
int utf8_len,
cairo_glyph_t *glyphs,
int num_glyphs,
const cairo_text_cluster_t *clusters,
int num_clusters,
cairo_text_cluster_flags_t cluster_flags,
cairo_scaled_font_t *scaled_font,
cairo_clip_t *clip);
static cairo_surface_t *
_cairo_null_surface_create_similar (void *other,
cairo_content_t content,
int width, int height)
{
return _cairo_test_null_surface_create (content);
}
static cairo_bool_t
_cairo_null_surface_get_extents (void *surface,
cairo_rectangle_int_t *extents)
{
return FALSE;
}
static cairo_bool_t
_cairo_null_surface_has_show_text_glyphs (void *surface)
{
return TRUE;
}
static const cairo_surface_backend_t null_surface_backend = {
CAIRO_INTERNAL_SURFACE_TYPE_NULL,
_cairo_null_surface_create_similar,
NULL, /* finish */
NULL, /* acquire_source_image */
NULL, /* release_source_image */
NULL, /* acquire_dest_image */
NULL, /* release_dest_image */
NULL, /* clone_similar */
NULL, /* composite */
NULL, /* fill_rectangles */
NULL, /* composite_trapezoids */
NULL, /* create_span_renderer */
NULL, /* check_span_renderer */
NULL, /* copy_page */
NULL, /* show_page */
_cairo_null_surface_get_extents,
NULL, /* old_show_glyphs */
NULL, /* get_font_options */
NULL, /* flush */
NULL, /* mark_dirty_rectangle */
NULL, /* scaled_font_fini */
NULL, /* scaled_glyph_fini */
(_paint_func) _return_success, /* paint */
(_mask_func) _return_success, /* mask */
(_stroke_func) _return_success, /* stroke */
(_fill_func) _return_success, /* fill */
(_show_glyphs_func) _return_success, /* show_glyphs */
NULL, /* snapshot */
NULL, /* is_similar */
NULL, /* fill_stroke */
NULL, /* create_solid_pattern_surface */
NULL, /* can_repaint_solid_pattern_surface */
_cairo_null_surface_has_show_text_glyphs,
(_show_text_glyphs_func) _return_success, /* show_text_glyphs */
};
cairo_surface_t *
_cairo_test_null_surface_create (cairo_content_t content)
{
cairo_surface_t *surface;
surface = malloc (sizeof (cairo_surface_t));
if (unlikely (surface == NULL)) {
return _cairo_surface_create_in_error (_cairo_error (CAIRO_STATUS_NO_MEMORY));
}
_cairo_surface_init (surface,
&null_surface_backend,
NULL, /* device */
content);
return surface;
}
slim_hidden_def (_cairo_test_null_surface_create);
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