diff options
Diffstat (limited to 'libs/cairo-1.16.0/test/clip-fill-rule-pixel-aligned.c')
| -rw-r--r-- | libs/cairo-1.16.0/test/clip-fill-rule-pixel-aligned.c | 90 |
1 files changed, 90 insertions, 0 deletions
diff --git a/libs/cairo-1.16.0/test/clip-fill-rule-pixel-aligned.c b/libs/cairo-1.16.0/test/clip-fill-rule-pixel-aligned.c new file mode 100644 index 0000000..210afcb --- /dev/null +++ b/libs/cairo-1.16.0/test/clip-fill-rule-pixel-aligned.c @@ -0,0 +1,90 @@ +/* + * Copyright © 2004 Red Hat, Inc. + * + * Permission to use, copy, modify, distribute, and sell this software + * and its documentation for any purpose is hereby granted without + * fee, provided that the above copyright notice appear in all copies + * and that both that copyright notice and this permission notice + * appear in supporting documentation, and that the name of + * Red Hat, Inc. not be used in advertising or publicity pertaining to + * distribution of the software without specific, written prior + * permission. Red Hat, Inc. makes no representations about the + * suitability of this software for any purpose. It is provided "as + * is" without express or implied warranty. + * + * RED HAT, INC. DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS + * SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND + * FITNESS, IN NO EVENT SHALL RED HAT, INC. BE LIABLE FOR ANY SPECIAL, + * INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER + * RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION + * OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR + * IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. + * + * Author: Carl D. Worth <cworth@cworth.org> + */ + +#include "cairo-test.h" + +#define PAD 1 +#define SIZE 5 + +static void +pixel_aligned_path (cairo_t *cr) +{ + cairo_save (cr); + { + cairo_scale (cr, SIZE, SIZE); + cairo_move_to (cr, 1, 0); + cairo_rel_line_to (cr, 1, 0); + cairo_rel_line_to (cr, 0, 3); + cairo_rel_line_to (cr, 1, 0); + cairo_rel_line_to (cr, 0, -1); + cairo_rel_line_to (cr, -3, 0); + cairo_rel_line_to (cr, 0, -1); + cairo_rel_line_to (cr, 4, 0); + cairo_rel_line_to (cr, 0, 3); + cairo_rel_line_to (cr, -3, 0); + cairo_rel_line_to (cr, 0, -4); + cairo_close_path (cr); + } + cairo_restore (cr); +} + +/* Use clipping to draw the same path twice, once with each fill rule */ +static cairo_test_status_t +draw (cairo_t *cr, int width, int height) +{ + cairo_set_source_rgb (cr, 1, 0, 0); /* red */ + + cairo_translate (cr, PAD, PAD); + + cairo_save (cr); + { + pixel_aligned_path (cr); + cairo_set_fill_rule (cr, CAIRO_FILL_RULE_EVEN_ODD); + cairo_clip (cr); + cairo_paint (cr); + } + cairo_restore (cr); + + cairo_translate (cr, SIZE*4 + PAD, 0); + + cairo_save (cr); + { + pixel_aligned_path (cr); + cairo_set_fill_rule (cr, CAIRO_FILL_RULE_WINDING); + cairo_clip (cr); + cairo_paint (cr); + } + cairo_restore (cr); + + return CAIRO_TEST_SUCCESS; +} + +CAIRO_TEST (clip_fill_rule_pixel_aligned, + "Tests interaction of clipping and cairo_set_fill_rule with a pixel-aligned path", + "clip", /* keywords */ + NULL, /* requirements */ + PAD + (SIZE*4) + PAD + (SIZE*4) + PAD, + PAD + (SIZE*4) + PAD, + NULL, draw) |