2 * Copyright © 2008 Mozilla Corporation
4 * Permission to use, copy, modify, distribute, and sell this software
5 * and its documentation for any purpose is hereby granted without
6 * fee, provided that the above copyright notice appear in all copies
7 * and that both that copyright notice and this permission notice
8 * appear in supporting documentation, and that the name of
9 * Mozilla Corporation not be used in advertising or publicity pertaining to
10 * distribution of the software without specific, written prior
11 * permission. Mozilla Corporation makes no representations about the
12 * suitability of this software for any purpose. It is provided "as
13 * is" without express or implied warranty.
15 * MOZILLA CORPORATION DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS
16 * SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND
17 * FITNESS, IN NO EVENT SHALL MOZILLA CORPORATION BE LIABLE FOR ANY SPECIAL,
18 * INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER
19 * RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
20 * OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR
21 * IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
23 * Authors: Michael Ventnor, Jeff Muizelaar
26 #include "cairo-test.h"
31 static cairo_test_status_t
32 draw (cairo_t *cr, int width, int height)
34 cairo_surface_t *second;
37 /* fill with black so we don't need an rgb test case */
38 cairo_set_source_rgb (cr, 0, 0, 0);
41 cairo_scale (cr, 0.5, 0.5);
43 /* draw the first rectangle */
44 cairo_set_source_rgb (cr, 0, 0, 0.4);
45 cairo_rectangle (cr, 6, 6, 10, 10);
48 /* adjust the offset so that the second rectangle will fit on the surface */
49 second = cairo_image_surface_create (CAIRO_FORMAT_A8, 10, 10);
50 cairo_surface_set_device_offset (second, -6, -6);
52 /* draw the second rectangle:
53 * this rectangle should end up in the same place as the rectangle above
54 * independent of the device offset of the surface it is painted on*/
55 second_cr = cairo_create (second);
56 cairo_surface_destroy (second);
57 cairo_rectangle (second_cr, 6, 6, 10, 10);
58 cairo_fill (second_cr);
60 /* paint the second rectangle on top of the first rectangle */
61 cairo_set_source_rgb (cr, 0.5, 0.5, 0);
62 cairo_mask_surface (cr, cairo_get_target (second_cr), 0, 0);
63 cairo_destroy (second_cr);
65 return CAIRO_TEST_SUCCESS;
68 CAIRO_TEST (device_offset_scale,
69 "Test that the device-offset transform is transformed by the ctm.",
70 "device-offset", /* keywords */
71 NULL, /* requirements */