From 530ffd0b7d3c39757b20f00716e486b5caf89aff Mon Sep 17 00:00:00 2001 From: sanine Date: Wed, 12 Oct 2022 12:03:23 -0500 Subject: add cairo --- libs/cairo-1.16.0/test/clip-fill-no-op.c | 67 ++++++++++++++++++++++++++++++++ 1 file changed, 67 insertions(+) create mode 100644 libs/cairo-1.16.0/test/clip-fill-no-op.c (limited to 'libs/cairo-1.16.0/test/clip-fill-no-op.c') diff --git a/libs/cairo-1.16.0/test/clip-fill-no-op.c b/libs/cairo-1.16.0/test/clip-fill-no-op.c new file mode 100644 index 0000000..b686b6e --- /dev/null +++ b/libs/cairo-1.16.0/test/clip-fill-no-op.c @@ -0,0 +1,67 @@ +/* + * Copyright 2009 Benjamin Otte + * + * Permission is hereby granted, free of charge, to any person + * obtaining a copy of this software and associated documentation + * files (the "Software"), to deal in the Software without + * restriction, including without limitation the rights to use, copy, + * modify, merge, publish, distribute, sublicense, and/or sell copies + * of the Software, and to permit persons to whom the Software is + * furnished to do so, subject to the following conditions: + * + * The above copyright notice and this permission notice shall be + * included in all copies or substantial portions of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, + * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF + * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND + * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS + * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN + * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN + * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE + * SOFTWARE. + * + * Author: Benjamin Otte + */ + +#include "cairo-test.h" + +#define WIDTH 50 +#define HEIGHT 50 + +static cairo_test_status_t +draw (cairo_t *cr, int width, int height) +{ + /* Neutral gray background */ + cairo_set_source_rgb (cr, 0.5, 0.5, 0.5); + cairo_paint (cr); + + /* remove this clip operation and everything works */ + cairo_rectangle (cr, 10, 10, 30, 30); + cairo_clip (cr); + + /* remove this no-op and everything works */ + cairo_fill (cr); + + /* make the y coordinates integers and everything works */ + cairo_move_to (cr, 20, 20.101562); + cairo_line_to (cr, 30, 20.101562); + + /* This clip operation should fail to work. But with cairo 1.9, if all the + * 3 cases above happen, the clip will not work and the paint will happen. + */ + cairo_save (cr); { + cairo_set_source_rgba (cr, 1, 0.5, 0.5, 1); + cairo_clip_preserve (cr); + cairo_paint (cr); + } cairo_restore (cr); + + return CAIRO_TEST_SUCCESS; +} + +CAIRO_TEST (clip_fill_no_op, + "Exercises a bug found by Benjamin Otte whereby a no-op clip is nullified by a stroke", + "clip, fill", /* keywords */ + NULL, /* requirements */ + WIDTH, HEIGHT, + NULL, draw) -- cgit v1.2.1