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/* 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 Red Hat, Inc.
*
* Contributor(s):
* Chris Wilson <chris@chris-wilson.co.uk>
*/
#include "cairoint.h"
#include "cairo-gl-private.h"
#include "cairo-surface-backend-private.h"
static cairo_status_t
_cairo_gl_source_finish (void *abstract_surface)
{
cairo_gl_source_t *source = abstract_surface;
_cairo_gl_operand_destroy (&source->operand);
return CAIRO_STATUS_SUCCESS;
}
static const cairo_surface_backend_t cairo_gl_source_backend = {
CAIRO_SURFACE_TYPE_GL,
_cairo_gl_source_finish,
NULL, /* read-only wrapper */
};
cairo_surface_t *
_cairo_gl_pattern_to_source (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)
{
cairo_gl_source_t *source;
cairo_int_status_t status;
TRACE ((stderr, "%s\n", __FUNCTION__));
if (pattern == NULL)
return _cairo_gl_white_source ();
source = malloc (sizeof (*source));
if (unlikely (source == NULL))
return _cairo_surface_create_in_error (_cairo_error (CAIRO_STATUS_NO_MEMORY));
_cairo_surface_init (&source->base,
&cairo_gl_source_backend,
NULL, /* device */
CAIRO_CONTENT_COLOR_ALPHA);
*src_x = *src_y = 0;
status = _cairo_gl_operand_init (&source->operand, pattern,
(cairo_gl_surface_t *)dst,
sample, extents,
FALSE);
if (unlikely (status)) {
cairo_surface_destroy (&source->base);
return _cairo_surface_create_in_error (status);
}
return &source->base;
}
cairo_surface_t *
_cairo_gl_white_source (void)
{
cairo_gl_source_t *source;
source = malloc (sizeof (*source));
if (unlikely (source == NULL))
return _cairo_surface_create_in_error (_cairo_error (CAIRO_STATUS_NO_MEMORY));
_cairo_surface_init (&source->base,
&cairo_gl_source_backend,
NULL, /* device */
CAIRO_CONTENT_COLOR_ALPHA);
_cairo_gl_solid_operand_init (&source->operand, CAIRO_COLOR_WHITE);
return &source->base;
}