diff options
Diffstat (limited to 'libs/cairo-1.16.0/test/long-lines.c')
| -rw-r--r-- | libs/cairo-1.16.0/test/long-lines.c | 85 |
1 files changed, 85 insertions, 0 deletions
diff --git a/libs/cairo-1.16.0/test/long-lines.c b/libs/cairo-1.16.0/test/long-lines.c new file mode 100644 index 0000000..69b64e9 --- /dev/null +++ b/libs/cairo-1.16.0/test/long-lines.c @@ -0,0 +1,85 @@ +/* + * Copyright © 2005 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. + * + * Authors: Carl D. Worth <cworth@cworth.org> + * Emmanuel Pacaud <emmanuel.pacaud@lapp.in2p3.fr> + */ + +#include "cairo-test.h" + +#define LINE_WIDTH 1. +#define SIZE 10 +#define LINE_NBR 6 + +struct { + double length; + double red, green, blue; +} lines[LINE_NBR] = { + { 100.0, 1.0, 0.0, 0.0 }, + { 10000.0, 0.0, 1.0, 0.0 }, + { 100000.0, 0.0, 0.0, 1.0 }, + { 1000000.0, 1.0, 1.0, 0.0 }, + { 10000000.0, 0.0, 1.0, 1.0 }, + { 100000000.0, 1.0, 0.0, 1.0 } +}; + +static cairo_test_status_t +draw (cairo_t *cr, int width, int height) +{ + double pos; + int i; + + /* We draw in the default black, so paint white first. */ + cairo_save (cr); + cairo_set_source_rgb (cr, 1.0, 1.0, 1.0); /* white */ + cairo_paint (cr); + cairo_restore (cr); + + cairo_set_line_width (cr, LINE_WIDTH); + + pos = SIZE + .5; + for (i = 0; i < LINE_NBR; i++) { + cairo_move_to (cr, pos, -lines[i].length); + cairo_line_to (cr, pos, +lines[i].length); + cairo_set_source_rgb (cr, lines[i].red, lines[i].green, lines[i].blue); + cairo_stroke (cr); + pos += SIZE; + } + + /* This should display a perfect vertically centered black line */ + cairo_move_to (cr, 0.5, -1e100); + cairo_line_to (cr, pos, 1e100); + cairo_set_source_rgb (cr, 0.0, 0.0, 0.0); + cairo_stroke (cr); + + return CAIRO_TEST_SUCCESS; +} + +/* XFAIL: range overflow of fixed-point */ +CAIRO_TEST (long_lines, + "Test long lines" + "\nLong lines are not drawn due to the limitations of the internal 16.16 fixed-point coordinates", + "stroke, stress", /* keywords */ + NULL, /* requirements */ + SIZE * (LINE_NBR + 1), SIZE * (LINE_NBR + 1), + NULL, draw) + |