/* * 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)