test/pattern-getters.c

   1 /* -*- Mode: c; c-basic-offset: 4; indent-tabs-mode: t; tab-width: 8; -*- */
   2 /*
   3  * Copyright © 2005 Mozilla Corporation, Inc.
   4  *
   5  * Permission to use, copy, modify, distribute, and sell this software
   6  * and its documentation for any purpose is hereby granted without
   7  * fee, provided that the above copyright notice appear in all copies
   8  * and that both that copyright notice and this permission notice
   9  * appear in supporting documentation, and that the name of
  10  * Mozilla Corporation not be used in advertising or publicity pertaining to
  11  * distribution of the software without specific, written prior
  12  * permission. Mozilla Corporation makes no representations about the
  13  * suitability of this software for any purpose.  It is provided "as
  14  * is" without express or implied warranty.
  15  *
  16  * MOZILLA CORPORATION DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS
  17  * SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND
  18  * FITNESS, IN NO EVENT SHALL MOZILLA CORPORATION BE LIABLE FOR ANY SPECIAL,
  19  * INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER
  20  * RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
  21  * OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR
  22  * IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
  23  *
  24  * Author: Vladimir Vukicevic <vladimir@pobox.com>
  25  */
  26
  27 #include "cairo-test.h"
  28 #include <stdlib.h>
  29
  30 #define CHECK_SUCCESS do { \
  31     if (status) { \
  32         cairo_pattern_destroy (pat); \
  33         return cairo_test_status_from_status (ctx, status); \
  34     } \
  35 } while (0)
  36
  37 static int
  38 double_buf_equal (const cairo_test_context_t *ctx, double *a, double *b, int nc)
  39 {
  40     int i;
  41     for (i = 0; i < nc; i++) {
  42         if (!CAIRO_TEST_DOUBLE_EQUALS(a[i],b[i])) {
  43             cairo_test_log (ctx, "Error: doubles not equal: %g, %g\n",
  44                             a[i], b[i]);
  45             return 0;
  46         }
  47     }
  48     return 1;
  49 }
  50
  51 static cairo_test_status_t
  52 draw (cairo_t *cr, int width, int height)
  53 {
  54     const cairo_test_context_t *ctx = cairo_test_get_context (cr);
  55     cairo_status_t status;
  56     cairo_pattern_t *pat;
  57
  58     /* Test pattern_get_rgba */
  59     {
  60         double r, g, b, a;
  61         pat = cairo_pattern_create_rgba (0.2, 0.3, 0.4, 0.5);
  62
  63         status = cairo_pattern_get_rgba (pat, &r, &g, &b, &a);
  64         CHECK_SUCCESS;
  65
  66         if (!CAIRO_TEST_DOUBLE_EQUALS(r,0.2) ||
  67             !CAIRO_TEST_DOUBLE_EQUALS(g,0.3) ||
  68             !CAIRO_TEST_DOUBLE_EQUALS(b,0.4) ||
  69             !CAIRO_TEST_DOUBLE_EQUALS(a,0.5)) {
  70             cairo_test_log (ctx, "Error: cairo_pattern_get_rgba returned unexepcted results: %g, %g, %g, %g\n",
  71                             r, g, b, a);
  72             cairo_pattern_destroy (pat);
  73             return CAIRO_TEST_FAILURE;
  74         }
  75
  76         cairo_pattern_destroy (pat);
  77     }
  78
  79     /* Test pattern_get_surface */
  80     {
  81         cairo_surface_t *surf;
  82
  83         pat = cairo_pattern_create_for_surface (cairo_get_target (cr));
  84
  85         status = cairo_pattern_get_surface (pat, &surf);
  86         CHECK_SUCCESS;
  87
  88         if (surf != cairo_get_target (cr)) {
  89             cairo_test_log (ctx, "Error: cairo_pattern_get_resurface returned wrong surface\n");
  90             cairo_pattern_destroy (pat);
  91             return CAIRO_TEST_FAILURE;
  92         }
  93
  94         cairo_pattern_destroy (pat);
  95     }
  96
  97     /* Test get_color_stops & linear_get_points */
  98     {
  99         int i;
 100         double x0, y0, x1, y1;
 101         double expected_values[15] = { 0.0, 0.2, 0.4, 0.2, 1.0,
 102                                        0.5, 0.4, 0.5, 0.2, 0.5,
 103                                        1.0, 0.2, 0.4, 0.5, 0.2 };
 104         double new_buf[15];
 105
 106         pat = cairo_pattern_create_linear (1.0, 2.0, 3.0, 4.0);
 107
 108         for (i = 0; i < 3; i++) {
 109             cairo_pattern_add_color_stop_rgba (pat,
 110                                                expected_values[i*5+0],
 111                                                expected_values[i*5+1],
 112                                                expected_values[i*5+2],
 113                                                expected_values[i*5+3],
 114                                                expected_values[i*5+4]);
 115         }
 116
 117         status = cairo_pattern_get_linear_points (pat, &x0, &y0, &x1, &y1);
 118         CHECK_SUCCESS;
 119
 120         if (!CAIRO_TEST_DOUBLE_EQUALS(x0,1.0) ||
 121             !CAIRO_TEST_DOUBLE_EQUALS(y0,2.0) ||
 122             !CAIRO_TEST_DOUBLE_EQUALS(x1,3.0) ||
 123             !CAIRO_TEST_DOUBLE_EQUALS(y1,4.0))
 124         {
 125             cairo_pattern_destroy (pat);
 126             return CAIRO_TEST_FAILURE;
 127         }
 128
 129         status = cairo_pattern_get_color_stop_count (pat, &i);
 130         CHECK_SUCCESS;
 131
 132         if (i != 3) {
 133             cairo_pattern_destroy (pat);
 134             return CAIRO_TEST_FAILURE;
 135         }
 136
 137         for (i = 0; i < 3; i++) {
 138             status = cairo_pattern_get_color_stop_rgba (pat, i,
 139                                                         &new_buf[i*5+0],
 140                                                         &new_buf[i*5+1],
 141                                                         &new_buf[i*5+2],
 142                                                         &new_buf[i*5+3],
 143                                                         &new_buf[i*5+4]);
 144             CHECK_SUCCESS;
 145         }
 146
 147         status = cairo_pattern_get_color_stop_rgba (pat, 5, NULL, NULL, NULL, NULL, NULL);
 148         if (status != CAIRO_STATUS_INVALID_INDEX) {
 149             cairo_pattern_destroy (pat);
 150             return CAIRO_TEST_FAILURE;
 151         }
 152
 153         if (!double_buf_equal (ctx, new_buf, expected_values,
 154                                ARRAY_LENGTH (expected_values)) != 0)
 155         {
 156             cairo_pattern_destroy (pat);
 157             return CAIRO_TEST_FAILURE;
 158         }
 159
 160         cairo_pattern_destroy (pat);
 161     }
 162
 163     /* Test radial_get_circles */
 164     {
 165         double a, b, c, d, e, f;
 166         pat = cairo_pattern_create_radial (1, 2, 3,
 167                                            4, 5, 6);
 168
 169         status = cairo_pattern_get_radial_circles (pat, &a, &b, &c, &d, &e, &f);
 170         CHECK_SUCCESS;
 171
 172         if (!CAIRO_TEST_DOUBLE_EQUALS(a,1.0) ||
 173             !CAIRO_TEST_DOUBLE_EQUALS(b,2.0) ||
 174             !CAIRO_TEST_DOUBLE_EQUALS(c,3.0) ||
 175             !CAIRO_TEST_DOUBLE_EQUALS(d,4.0) ||
 176             !CAIRO_TEST_DOUBLE_EQUALS(e,5.0) ||
 177             !CAIRO_TEST_DOUBLE_EQUALS(f,6.0))
 178         {
 179             cairo_pattern_destroy (pat);
 180             return CAIRO_TEST_FAILURE;
 181         }
 182
 183         cairo_pattern_destroy (pat);
 184     }
 185
 186     /* Test mesh getters */
 187     {
 188         unsigned int count;
 189         int i;
 190         pat = cairo_pattern_create_mesh ();
 191
 192         status = cairo_mesh_pattern_get_patch_count (pat, &count);
 193         CHECK_SUCCESS;
 194
 195         if (count != 0) {
 196             cairo_pattern_destroy (pat);
 197             return CAIRO_TEST_FAILURE;
 198         }
 199
 200         cairo_mesh_pattern_begin_patch (pat);
 201         cairo_mesh_pattern_move_to (pat, 0, 0);
 202         cairo_mesh_pattern_line_to (pat, 0, 3);
 203         cairo_mesh_pattern_line_to (pat, 3, 3);
 204         cairo_mesh_pattern_line_to (pat, 3, 0);
 205
 206         status = cairo_mesh_pattern_get_patch_count (pat, &count);
 207         CHECK_SUCCESS;
 208
 209         if (count != 0) {
 210             cairo_pattern_destroy (pat);
 211             return CAIRO_TEST_FAILURE;
 212         }
 213
 214         cairo_mesh_pattern_end_patch (pat);
 215
 216         status = cairo_mesh_pattern_get_patch_count (pat, &count);
 217         CHECK_SUCCESS;
 218
 219         if (count != 1) {
 220             cairo_pattern_destroy (pat);
 221             return CAIRO_TEST_FAILURE;
 222         }
 223
 224         for (i = 0; i < 4; i++) {
 225             double cp_x[4] = { 1, 1, 2, 2 };
 226             double cp_y[4] = { 1, 2, 2, 1 };
 227             double x, y;
 228
 229             status = cairo_mesh_pattern_get_control_point (pat, 0, i, &x, &y);
 230             CHECK_SUCCESS;
 231
 232             if (!CAIRO_TEST_DOUBLE_EQUALS(x,cp_x[i]) ||
 233                 !CAIRO_TEST_DOUBLE_EQUALS(y,cp_y[i]))
 234             {
 235                 cairo_pattern_destroy (pat);
 236                 return CAIRO_TEST_FAILURE;
 237             }
 238         }
 239
 240         cairo_mesh_pattern_begin_patch (pat);
 241         cairo_mesh_pattern_move_to (pat, 0, 0);
 242         cairo_mesh_pattern_line_to (pat, 1, 0);
 243         cairo_mesh_pattern_line_to (pat, 1, 1);
 244         cairo_mesh_pattern_set_corner_color_rgb (pat, 0, 1, 1, 1);
 245         cairo_mesh_pattern_end_patch (pat);
 246
 247         for (i = 0; i < 4; i++) {
 248             double corner_color[4] = { 1, 0, 0, 1 };
 249             double a, r, g, b;
 250
 251             status = cairo_mesh_pattern_get_corner_color_rgba (pat, 1, i,
 252                                                                &r, &g, &b, &a);
 253             CHECK_SUCCESS;
 254
 255             if (!CAIRO_TEST_DOUBLE_EQUALS(a,corner_color[i]) ||
 256                 !CAIRO_TEST_DOUBLE_EQUALS(r,corner_color[i]) ||
 257                 !CAIRO_TEST_DOUBLE_EQUALS(g,corner_color[i]) ||
 258                 !CAIRO_TEST_DOUBLE_EQUALS(b,corner_color[i]))
 259             {
 260                 cairo_pattern_destroy (pat);
 261                 return CAIRO_TEST_FAILURE;
 262             }
 263         }
 264
 265         cairo_pattern_destroy (pat);
 266     }
 267
 268     cairo_set_source_rgb (cr, 0, 1, 0);
 269     cairo_paint (cr);
 270
 271     return CAIRO_TEST_SUCCESS;
 272 }
 273
 274 CAIRO_TEST (pattern_getters,
 275             "Tests calls to pattern getter functions",
 276             "pattern, api", /* keywords */
 277             NULL, /* requirements */
 278             1, 1,
 279             NULL, draw)