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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
*
* 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.
*
* Contributor(s):
* Robert Bragg <robert@linux.intel.com>
*/
#ifndef CAIRO_COGL_GRADIENT_PRIVATE_H
#define CAIRO_COGL_GRADIENT_PRIVATE_H
#include "cairoint.h"
#include "cairo-pattern-private.h"
#include <cogl/cogl2-experimental.h>
#define CAIRO_COGL_LINEAR_GRADIENT_CACHE_SIZE (1024 * 1024)
typedef enum _cairo_cogl_gradient_compatibility {
CAIRO_COGL_GRADIENT_CAN_EXTEND_PAD = 1<<0,
CAIRO_COGL_GRADIENT_CAN_EXTEND_REPEAT = 1<<1,
CAIRO_COGL_GRADIENT_CAN_EXTEND_REFLECT = 1<<2,
CAIRO_COGL_GRADIENT_CAN_EXTEND_NONE = 1<<3
} cairo_cogl_gradient_compatibility_t;
#define CAIRO_COGL_GRADIENT_CAN_EXTEND_ALL (CAIRO_COGL_GRADIENT_CAN_EXTEND_PAD |\
CAIRO_COGL_GRADIENT_CAN_EXTEND_REPEAT|\
CAIRO_COGL_GRADIENT_CAN_EXTEND_REFLECT|\
CAIRO_COGL_GRADIENT_CAN_EXTEND_NONE)
typedef struct _cairo_cogl_linear_texture_entry {
cairo_cogl_gradient_compatibility_t compatibility;
CoglTexture *texture;
float translate_x;
float scale_x;
} cairo_cogl_linear_texture_entry_t;
typedef struct _cairo_cogl_linear_gradient {
cairo_cache_entry_t cache_entry;
cairo_reference_count_t ref_count;
GList *textures;
int n_stops;
const cairo_gradient_stop_t *stops;
cairo_gradient_stop_t stops_embedded[1];
} cairo_cogl_linear_gradient_t;
cairo_int_status_t
_cairo_cogl_get_linear_gradient (cairo_cogl_device_t *context,
cairo_extend_t extend_mode,
int n_stops,
const cairo_gradient_stop_t *stops,
const cairo_bool_t need_mirrored_gradient,
cairo_cogl_linear_gradient_t **gradient_out);
cairo_cogl_linear_texture_entry_t *
_cairo_cogl_linear_gradient_texture_for_extend (cairo_cogl_linear_gradient_t *gradient,
cairo_extend_t extend_mode);
cairo_cogl_linear_gradient_t *
_cairo_cogl_linear_gradient_reference (cairo_cogl_linear_gradient_t *gradient);
void
_cairo_cogl_linear_gradient_destroy (cairo_cogl_linear_gradient_t *gradient);
cairo_bool_t
_cairo_cogl_linear_gradient_equal (const void *key_a, const void *key_b);
#endif /* CAIRO_COGL_GRADIENT_PRIVATE_H */