test/clip-zero.c

   1 /*
   2  * Copyright © 2007 Mozilla Corporation
   3  *
   4  * Permission is hereby granted, free of charge, to any person
   5  * obtaining a copy of this software and associated documentation
   6  * files (the "Software"), to deal in the Software without
   7  * restriction, including without limitation the rights to use, copy,
   8  * modify, merge, publish, distribute, sublicense, and/or sell copies
   9  * of the Software, and to permit persons to whom the Software is
  10  * furnished to do so, subject to the following conditions:
  11  *
  12  * The above copyright notice and this permission notice shall be
  13  * included in all copies or substantial portions of the Software.
  14  *
  15  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
  16  * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  17  * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
  18  * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
  19  * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
  20  * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
  21  * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
  22  * SOFTWARE.
  23  *
  24  * Author: Vladimir Vukicevic <vladimir@pobox.com>
  25  */
  26
  27 #include "cairo-test.h"
  28
  29 static cairo_test_draw_function_t draw;
  30
  31 cairo_test_t test = {
  32     "clip-zero",
  33     "Verifies that 0x0 surfaces or clips don't cause problems.",
  34     0, 0,
  35     draw
  36 };
  37
  38 static cairo_test_status_t
  39 draw (cairo_t *cr, int width, int height)
  40 {
  41     cairo_pattern_t *pat;
  42     cairo_surface_t *surf;
  43
  44     cairo_new_path (cr);
  45     cairo_rectangle (cr, 0, 0, 0, 0);
  46     cairo_clip (cr);
  47
  48     cairo_push_group (cr);
  49
  50     cairo_set_source_rgb (cr, 1, 0, 0);
  51
  52     cairo_new_path (cr);
  53     cairo_rectangle (cr, -10, 10, 20, 20);
  54     cairo_fill_preserve (cr);
  55     cairo_stroke_preserve (cr);
  56     cairo_paint (cr);
  57
  58     cairo_select_font_face (cr, "sans", CAIRO_FONT_SLANT_NORMAL, CAIRO_FONT_WEIGHT_NORMAL);
  59     cairo_show_text (cr, "ABC");
  60
  61     cairo_mask (cr, cairo_get_source (cr));
  62
  63     surf = cairo_surface_create_similar (cairo_get_group_target (cr), CAIRO_CONTENT_COLOR_ALPHA, 0, 0);
  64     pat = cairo_pattern_create_for_surface (surf);
  65     cairo_surface_destroy (surf);
  66
  67     cairo_mask (cr, pat);
  68     cairo_pattern_destroy (pat);
  69
  70     cairo_pop_group_to_source (cr);
  71     cairo_paint (cr);
  72
  73     return CAIRO_TEST_SUCCESS;
  74 }
  75
  76 int
  77 main (void)
  78 {
  79     return cairo_test (&test);
  80 }