/* * 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 <cworth@cworth.org> */ #include "cairo-test.h" #include <stddef.h> #define SIZE 10 #define PAD 2 static void draw_square (cairo_t *cr) { cairo_rectangle (cr, PAD, PAD, SIZE - 2 * PAD, SIZE - 2 * PAD); cairo_fill (cr); } static cairo_test_status_t draw (cairo_t *cr, int width, int height) { cairo_surface_t *surface, *target; cairo_t *cr2; /* First draw a shape in blue on the original destination. */ cairo_set_source_rgb (cr, 0, 0, 1); /* blue */ draw_square (cr); /* Then, create an offset surface and repeat the drawing in red. */ target = cairo_get_group_target (cr); surface = cairo_surface_create_similar (target, cairo_surface_get_content (target), SIZE / 2, SIZE / 2); cr2 = cairo_create (surface); cairo_surface_destroy (surface); cairo_set_source_rgb (cr2, 1, 0, 0); /* red */ draw_square (cr2); /* Finally, copy the offset surface to the original destination. * The final result should be a blue square with the upper-left * quarter red. */ surface = cairo_surface_reference (cairo_get_target (cr2)); cairo_destroy (cr2); cairo_surface_set_device_offset (surface, + SIZE / 2, + SIZE / 2); cairo_set_source_surface (cr, surface, SIZE / 2, SIZE / 2); cairo_surface_destroy (surface); cairo_paint (cr); return CAIRO_TEST_SUCCESS; } CAIRO_TEST (device_offset_positive, "Simple test using a surface with a positive device-offset as a source.", "device-offset", /* keywords */ NULL, /* requirements */ SIZE, SIZE, NULL, draw)