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/rgb24-ignore-alpha.c | 60 +++++++++++++++++++++++++++++ 1 file changed, 60 insertions(+) create mode 100644 libs/cairo-1.16.0/test/rgb24-ignore-alpha.c (limited to 'libs/cairo-1.16.0/test/rgb24-ignore-alpha.c') diff --git a/libs/cairo-1.16.0/test/rgb24-ignore-alpha.c b/libs/cairo-1.16.0/test/rgb24-ignore-alpha.c new file mode 100644 index 0000000..1c9d57e --- /dev/null +++ b/libs/cairo-1.16.0/test/rgb24-ignore-alpha.c @@ -0,0 +1,60 @@ +/* + * Copyright © 2007 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: Carl D. Worth + */ + +#include "cairo-test.h" + +#define WIDTH 2 +#define HEIGHT 2 + +static cairo_test_status_t +draw (cairo_t *cr, int width, int height) +{ + cairo_surface_t *surface; + /* Four green pixels with different "alpha" values, (but which + * should be entirely ignored). */ + uint32_t colors[4] = { + 0xff00ff00, 0x8800ff00, + 0x4400ff00, 0x0000ff00 + }; + + surface = cairo_image_surface_create_for_data ((unsigned char *) colors, + CAIRO_FORMAT_RGB24, 2, 2, 8); + + cairo_set_source_surface (cr, surface, 0, 0); + cairo_paint (cr); + + cairo_surface_finish (surface); /* colors will go out of scope */ + cairo_surface_destroy (surface); + + return CAIRO_TEST_SUCCESS; +} + +CAIRO_TEST (rgb24_ignore_alpha, + "Test that when using an RGB24 image as a source, there is no alpha channel", + "image, alpha", /* keywords */ + NULL, /* requirements */ + WIDTH, HEIGHT, + NULL, draw) -- cgit v1.2.1