diff options
Diffstat (limited to 'libs/cairo-1.16.0/test/infinite-join.c')
| -rw-r--r-- | libs/cairo-1.16.0/test/infinite-join.c | 72 |
1 files changed, 72 insertions, 0 deletions
diff --git a/libs/cairo-1.16.0/test/infinite-join.c b/libs/cairo-1.16.0/test/infinite-join.c new file mode 100644 index 0000000..a573f56 --- /dev/null +++ b/libs/cairo-1.16.0/test/infinite-join.c @@ -0,0 +1,72 @@ +/* + * Copyright © 2006 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 the + * copyright holders not be used in advertising or publicity + * pertaining to distribution of the software without specific, + * written prior permission. The copyright holders make no + * representations about the suitability of this software for any + * purpose. It is provided "as is" without express or implied + * warranty. + * + * THE COPYRIGHT HOLDERS DISCLAIM ALL WARRANTIES WITH REGARD TO THIS + * SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND + * FITNESS, IN NO EVENT SHALL THE COPYRIGHT HOLDERS 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> + */ + +/* Test case for bug #8379: + * + * infinite loop when stroking + * https://bugs.freedesktop.org/show_bug.cgi?id=8379 + */ + +#include "cairo-test.h" + +static cairo_test_status_t +draw (cairo_t *cr, int width, int height) +{ + /* Paint white, then draw in black. */ + cairo_set_source_rgb (cr, 1, 1, 1); /* white */ + cairo_paint (cr); + cairo_set_source_rgb (cr, 0, 0, 0); /* black */ + + cairo_set_line_join (cr, CAIRO_LINE_JOIN_ROUND); + + /* scaling 2 times causes a slight rounding error in the ctm. + * Without that, the bug doesn't happen. */ + cairo_scale (cr, 20 / 100., 20 / 100.); + cairo_scale (cr, 1. / 20, 1. / 20); + + cairo_set_line_join (cr, CAIRO_LINE_JOIN_ROUND); + cairo_set_line_width (cr, 20); + + cairo_translate (cr, -18300, -13200); + + cairo_new_path (cr); + cairo_move_to (cr, 18928, 13843); + cairo_line_to (cr, 18500, 13843); + cairo_line_to (cr, 18500, 13400); + cairo_line_to (cr, 18928, 13400); + cairo_line_to (cr, 18928, 13843); + cairo_stroke (cr); + + return CAIRO_TEST_SUCCESS; +} + +CAIRO_TEST (infinite_join, + "Test case for infinite loop when stroking with round joins", + "stroke", /* keywords */ + NULL, + 8, 8, + NULL, draw) |