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/push-group-path-offset.c | 77 +++++++++++++++++++++++++ 1 file changed, 77 insertions(+) create mode 100644 libs/cairo-1.16.0/test/push-group-path-offset.c (limited to 'libs/cairo-1.16.0/test/push-group-path-offset.c') diff --git a/libs/cairo-1.16.0/test/push-group-path-offset.c b/libs/cairo-1.16.0/test/push-group-path-offset.c new file mode 100644 index 0000000..6b73ca4 --- /dev/null +++ b/libs/cairo-1.16.0/test/push-group-path-offset.c @@ -0,0 +1,77 @@ +/* + * Copyright 2010 Red Hat Inc. + * + * 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 CLIP_OFFSET 15 +#define CLIP_SIZE 20 + +#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, 0.51613, 0.55555, 0.51613); + cairo_paint (cr); + + /* the rest uses CAIRO_OPERATOR_SOURCE so we see better when something goes wrong */ + cairo_set_operator (cr, CAIRO_OPERATOR_SOURCE); + + /* add a rectangle */ + cairo_rectangle (cr, CLIP_OFFSET, CLIP_OFFSET, CLIP_SIZE, CLIP_SIZE); + + /* clip to the rectangle */ + cairo_clip_preserve (cr); + + /* push a group. We now have a device offset. */ + cairo_push_group (cr); + + /* push a group again. This is where the bug used to happen. */ + cairo_push_group (cr); + + /* draw something */ + cairo_set_source_rgb (cr, 1, 0, 0); + cairo_fill_preserve (cr); + + /* make sure the stuff we drew ends up on the output */ + cairo_pop_group_to_source (cr); + cairo_fill_preserve (cr); + + cairo_pop_group_to_source (cr); + cairo_fill_preserve (cr); + + return CAIRO_TEST_SUCCESS; +} + +CAIRO_TEST (push_group_path_offset, + "Exercises a bug in Cairo 1.9 where existing paths applied the target's" + " device offset twice when cairo_push_group() was called.", + "group, path", /* keywords */ + NULL, /* requirements */ + WIDTH, HEIGHT, + NULL, draw) -- cgit v1.2.1