/* * Copyright © 2008 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 <cworth@cworth.org> */ #include "cairo-test.h" #define POINTS 10 #define STEP (1.0 / POINTS) #define PAD 1 #define WIDTH (PAD + POINTS * 2 + PAD) #define HEIGHT (WIDTH) /* A single, black pixel */ static const uint32_t black_pixel = 0xff000000; static cairo_test_status_t draw (cairo_t *cr, int width, int height) { int i, j; cairo_surface_t *surface; surface = cairo_image_surface_create_for_data ((unsigned char *) &black_pixel, CAIRO_FORMAT_ARGB32, 1, 1, 4); /* Fill background white */ cairo_set_source_rgb (cr, 1, 1, 1); cairo_paint (cr); cairo_translate (cr, PAD, PAD); for (i = 0; i < POINTS; i++) for (j = 0; j < POINTS; j++) { cairo_set_source_surface (cr, surface, 2 * i + i * STEP, 2 * j + j * STEP); cairo_pattern_set_filter (cairo_get_source (cr), CAIRO_FILTER_NEAREST); cairo_paint (cr); } cairo_surface_destroy (surface); return CAIRO_TEST_SUCCESS; } CAIRO_TEST (a1_image_sample, "Test sample position when drawing images with FILTER_NEAREST", "image, alpha", /* keywords */ "target=raster", /* requirements */ WIDTH, HEIGHT, NULL, draw)