cairo/test/set-source.c

   1 /*
   2  * Copyright © 2005 Red Hat, Inc.
   3  *
   4  * Permission to use, copy, modify, distribute, and sell this software
   5  * and its documentation for any purpose is hereby granted without
   6  * fee, provided that the above copyright notice appear in all copies
   7  * and that both that copyright notice and this permission notice
   8  * appear in supporting documentation, and that the name of
   9  * Red Hat, Inc. not be used in advertising or publicity pertaining to
  10  * distribution of the software without specific, written prior
  11  * permission. Red Hat, Inc. makes no representations about the
  12  * suitability of this software for any purpose.  It is provided "as
  13  * is" without express or implied warranty.
  14  *
  15  * RED HAT, INC. DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS
  16  * SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND
  17  * FITNESS, IN NO EVENT SHALL RED HAT, INC. BE LIABLE FOR ANY SPECIAL,
  18  * INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER
  19  * RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
  20  * OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR
  21  * IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
  22  *
  23  * Author: Carl D. Worth <cworth@cworth.org>
  24  */
  25
  26 #include "cairo-test.h"
  27
  28 static cairo_test_draw_function_t draw;
  29
  30 static const cairo_test_t test = {
  31     "set-source",
  32     "Tests calls to various set_source functions",
  33     5, 5,
  34     draw
  35 };
  36
  37 static cairo_test_status_t
  38 draw (cairo_t *cr, int width, int height)
  39 {
  40     int i;
  41     uint32_t color = 0x8019334c;
  42     cairo_surface_t *surface;
  43     cairo_pattern_t *pattern;
  44
  45     surface = cairo_image_surface_create_for_data ((unsigned char *) &color,
  46                                                    CAIRO_FORMAT_ARGB32, 1, 1, 4);
  47     pattern = cairo_pattern_create_for_surface (surface);
  48     cairo_pattern_set_extend (pattern, CAIRO_EXTEND_REPEAT);
  49
  50     /* Several different means of making mostly the same color (though
  51      * we can't get anything but alpha==1.0 out of
  52      * cairo_set_source_rgb. */
  53     for (i=0; i < width; i++) {
  54         switch (i) {
  55         case 0:
  56             cairo_set_source_rgb (cr, .6, .7, .8);
  57             break;
  58         case 1:
  59             cairo_set_source_rgba (cr, .2, .4, .6, 0.5);
  60             break;
  61         case 2:
  62 #if WE_HAD_SUPPORT_FOR_PREMULTIPLIED
  63             cairo_set_source_rgba_premultiplied (cr, .1, .2, .3, 0.5);
  64 #else
  65             cairo_set_source_rgba (cr, .2, .4, .6, 0.5);
  66 #endif
  67             break;
  68         case 3:
  69         default:
  70             cairo_set_source (cr, pattern);
  71             break;
  72         }
  73
  74         cairo_rectangle (cr, i, 0, 1, height);
  75         cairo_fill (cr);
  76     }
  77
  78     cairo_pattern_destroy (pattern);
  79     cairo_surface_destroy (surface);
  80
  81     return CAIRO_TEST_SUCCESS;
  82 }
  83
  84 int
  85 main (void)
  86 {
  87     return cairo_test (&test);
  88 }