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-nesting.c | 109 ++++++++++++++++++++++++++++++++++ 1 file changed, 109 insertions(+) create mode 100644 libs/cairo-1.16.0/test/clip-nesting.c (limited to 'libs/cairo-1.16.0/test/clip-nesting.c') diff --git a/libs/cairo-1.16.0/test/clip-nesting.c b/libs/cairo-1.16.0/test/clip-nesting.c new file mode 100644 index 0000000..a9227ec --- /dev/null +++ b/libs/cairo-1.16.0/test/clip-nesting.c @@ -0,0 +1,109 @@ +/* + * 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. + * + * Author: Owen Taylor + */ + +#include "cairo-test.h" +#include +#include + +#define SIZE 100 +#define BORDER 10 +#define LINE_WIDTH 20 + +static void +_propagate_status (cairo_t *dst, cairo_t *src) +{ + cairo_path_t path; + + path.status = cairo_status (src); + if (path.status) { + path.num_data = 0; + path.data = NULL; + cairo_append_path (dst, &path); + } +} + +static cairo_test_status_t +draw (cairo_t *cr, int width, int height) +{ + cairo_surface_t *target_surface; + cairo_t *cr2, *cr3; + + target_surface = cairo_get_group_target (cr); + + cr2 = cairo_create (target_surface); + + /* Draw a diagonal line and clip to it */ + + cairo_move_to (cr2, BORDER, BORDER); + cairo_line_to (cr2, BORDER + LINE_WIDTH, BORDER); + cairo_line_to (cr2, SIZE - BORDER, SIZE - BORDER); + cairo_line_to (cr2, SIZE - BORDER - LINE_WIDTH, SIZE - BORDER); + + cairo_clip (cr2); + cairo_set_source_rgb (cr2, 0, 0, 1); /* Blue */ + cairo_paint (cr2); + + /* Clipping affects this cairo_t */ + + cairo_set_source_rgb (cr2, 1, 1, 1); /* White */ + cairo_rectangle (cr2, + SIZE / 2 - LINE_WIDTH / 2, BORDER, + LINE_WIDTH, SIZE - 2 * BORDER); + cairo_fill (cr2); + + /* But doesn't affect another cairo_t that we create temporarily for + * the same surface + */ + cr3 = cairo_create (target_surface); + cairo_set_source_rgb (cr3, 1, 1, 1); /* White */ + cairo_rectangle (cr3, + SIZE - BORDER - LINE_WIDTH, BORDER, + LINE_WIDTH, SIZE - 2 * BORDER); + cairo_fill (cr3); + + _propagate_status (cr, cr3); + cairo_destroy (cr3); + + _propagate_status (cr, cr2); + cairo_destroy (cr2); + + /* And doesn't affect anything after this cairo_t is destroyed */ + + cairo_set_source_rgb (cr, 1, 1, 1); /* White */ + cairo_rectangle (cr, + BORDER, BORDER, + LINE_WIDTH, SIZE - 2 * BORDER); + cairo_fill (cr); + + return CAIRO_TEST_SUCCESS; + +} + +CAIRO_TEST (clip_nesting, + "Test clipping with multiple contexts for the same surface", + "clip", /* keywords */ + NULL, /* requirements */ + SIZE, SIZE, + NULL, draw) -- cgit v1.2.1