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/paint-source-alpha.c | 63 +++++++++++++++++++++++++++++ 1 file changed, 63 insertions(+) create mode 100644 libs/cairo-1.16.0/test/paint-source-alpha.c (limited to 'libs/cairo-1.16.0/test/paint-source-alpha.c') diff --git a/libs/cairo-1.16.0/test/paint-source-alpha.c b/libs/cairo-1.16.0/test/paint-source-alpha.c new file mode 100644 index 0000000..cb2d488 --- /dev/null +++ b/libs/cairo-1.16.0/test/paint-source-alpha.c @@ -0,0 +1,63 @@ +/* + * Copyright © 2005 Red Hat, Inc. + * 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 + * 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: Carl D. Worth + */ + +#include "cairo-test.h" + +static cairo_test_status_t +draw (cairo_t *cr, int width, int height) +{ + cairo_surface_t *surface; + uint32_t data[16] = { + 0x80808080, 0x80808080, 0x80800000, 0x80800000, + 0x80808080, 0x80808080, 0x80800000, 0x80800000, + + 0x80008000, 0x80008000, 0x80000080, 0x80000080, + 0x80008000, 0x80008000, 0x80000080, 0x80000080 + }; + + surface = cairo_image_surface_create_for_data ((unsigned char *) data, + CAIRO_FORMAT_ARGB32, 4, 4, 16); + + cairo_test_paint_checkered (cr); + + cairo_scale (cr, 4, 4); + + cairo_set_source_surface (cr, surface, 2 , 2); + cairo_pattern_set_filter (cairo_get_source (cr), CAIRO_FILTER_NEAREST); + cairo_paint (cr); + + cairo_surface_finish (surface); /* data will go out of scope */ + cairo_surface_destroy (surface); + + return CAIRO_TEST_SUCCESS; +} + +CAIRO_TEST (paint_source_alpha, + "Simple test of cairo_paint with a source surface with non-opaque alpha", + "paint, alpha", /* keywords */ + NULL, /* requirements */ + 32, 32, + NULL, draw) -- cgit v1.2.1