1 /* cairo - a vector graphics library with display and print output 2 * 3 * Copyright © 2011 Intel Corporation. 4 * 5 * This library is free software; you can redistribute it and/or 6 * modify it either under the terms of the GNU Lesser General Public 7 * License version 2.1 as published by the Free Software Foundation 8 * (the "LGPL") or, at your option, under the terms of the Mozilla 9 * Public License Version 1.1 (the "MPL"). If you do not alter this 10 * notice, a recipient may use your version of this file under either 11 * the MPL or the LGPL. 12 * 13 * You should have received a copy of the LGPL along with this library 14 * in the file COPYING-LGPL-2.1; if not, write to the Free Software 15 * Foundation, Inc., 51 Franklin Street, Suite 500, Boston, MA 02110-1335, USA 16 * You should have received a copy of the MPL along with this library 17 * in the file COPYING-MPL-1.1 18 * 19 * The contents of this file are subject to the Mozilla Public License 20 * Version 1.1 (the "License"); you may not use this file except in 21 * compliance with the License. You may obtain a copy of the License at 22 * http://www.mozilla.og/MPL/ 23 * 24 * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY 25 * OF ANY KIND, either express or implied. See the LGPL or the MPL for 26 * the specific language governing rights and limitations. 27 * 28 * Contributor(s): 29 * Robert Bragg <robert@linux.intel.com> 30 */ 31 32 #ifndef CAIRO_COGL_GRADIENT_PRIVATE_H 33 #define CAIRO_COGL_GRADIENT_PRIVATE_H 34 35 #include "cairoint.h" 36 #include "cairo-pattern-private.h" 37 38 #include <cogl/cogl2-experimental.h> 39 40 #define CAIRO_COGL_LINEAR_GRADIENT_CACHE_SIZE (1024 * 1024) 41 42 typedef enum _cairo_cogl_gradient_compatibility { 43 CAIRO_COGL_GRADIENT_CAN_EXTEND_PAD = 1<<0, 44 CAIRO_COGL_GRADIENT_CAN_EXTEND_REPEAT = 1<<1, 45 CAIRO_COGL_GRADIENT_CAN_EXTEND_REFLECT = 1<<2, 46 CAIRO_COGL_GRADIENT_CAN_EXTEND_NONE = 1<<3 47 } cairo_cogl_gradient_compatibility_t; 48 #define CAIRO_COGL_GRADIENT_CAN_EXTEND_ALL (CAIRO_COGL_GRADIENT_CAN_EXTEND_PAD |\ 49 CAIRO_COGL_GRADIENT_CAN_EXTEND_REPEAT|\ 50 CAIRO_COGL_GRADIENT_CAN_EXTEND_REFLECT|\ 51 CAIRO_COGL_GRADIENT_CAN_EXTEND_NONE) 52 53 typedef struct _cairo_cogl_linear_texture_entry { 54 cairo_cogl_gradient_compatibility_t compatibility; 55 CoglTexture *texture; 56 float translate_x; 57 float scale_x; 58 } cairo_cogl_linear_texture_entry_t; 59 60 typedef struct _cairo_cogl_linear_gradient { 61 cairo_cache_entry_t cache_entry; 62 cairo_reference_count_t ref_count; 63 GList *textures; 64 int n_stops; 65 const cairo_gradient_stop_t *stops; 66 cairo_gradient_stop_t stops_embedded[1]; 67 } cairo_cogl_linear_gradient_t; 68 69 cairo_int_status_t 70 _cairo_cogl_get_linear_gradient (cairo_cogl_device_t *context, 71 cairo_extend_t extend_mode, 72 int n_stops, 73 const cairo_gradient_stop_t *stops, 74 const cairo_bool_t need_mirrored_gradient, 75 cairo_cogl_linear_gradient_t **gradient_out); 76 77 cairo_cogl_linear_texture_entry_t * 78 _cairo_cogl_linear_gradient_texture_for_extend (cairo_cogl_linear_gradient_t *gradient, 79 cairo_extend_t extend_mode); 80 81 cairo_cogl_linear_gradient_t * 82 _cairo_cogl_linear_gradient_reference (cairo_cogl_linear_gradient_t *gradient); 83 84 void 85 _cairo_cogl_linear_gradient_destroy (cairo_cogl_linear_gradient_t *gradient); 86 87 cairo_bool_t 88 _cairo_cogl_linear_gradient_equal (const void *key_a, const void *key_b); 89 90 #endif /* CAIRO_COGL_GRADIENT_PRIVATE_H */ 91