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/*
* Copyright © 2008 Mozilla Corporation
*
* 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
* Mozilla Corporation not be used in advertising or publicity pertaining to
* distribution of the software without specific, written prior
* permission. Mozilla Corporation makes no representations about the
* suitability of this software for any purpose. It is provided "as
* is" without express or implied warranty.
*
* MOZILLA CORPORATION DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS
* SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND
* FITNESS, IN NO EVENT SHALL MOZILLA CORPORATION 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.
*
* Authors: Michael Ventnor, Jeff Muizelaar
*/
#include "cairo-test.h"
#define WIDTH 20
#define HEIGHT 20
static cairo_test_status_t
draw (cairo_t *cr, int width, int height)
{
cairo_surface_t *second;
cairo_t *second_cr;
/* fill with black so we don't need an rgb test case */
cairo_set_source_rgb (cr, 0, 0, 0);
cairo_paint (cr);
cairo_scale (cr, 0.5, 0.5);
/* draw the first rectangle */
cairo_set_source_rgb (cr, 0, 0, 0.4);
cairo_rectangle (cr, 6, 6, 10, 10);
cairo_fill (cr);
/* adjust the offset so that the second rectangle will fit on the surface */
second = cairo_image_surface_create (CAIRO_FORMAT_A8, 10, 10);
cairo_surface_set_device_offset (second, -6, -6);
/* draw the second rectangle:
* this rectangle should end up in the same place as the rectangle above
* independent of the device offset of the surface it is painted on*/
second_cr = cairo_create (second);
cairo_surface_destroy (second);
cairo_rectangle (second_cr, 6, 6, 10, 10);
cairo_fill (second_cr);
/* paint the second rectangle on top of the first rectangle */
cairo_set_source_rgb (cr, 0.5, 0.5, 0);
cairo_mask_surface (cr, cairo_get_target (second_cr), 0, 0);
cairo_destroy (second_cr);
return CAIRO_TEST_SUCCESS;
}
CAIRO_TEST (device_offset_scale,
"Test that the device-offset transform is transformed by the ctm.",
"device-offset", /* keywords */
NULL, /* requirements */
WIDTH, HEIGHT,
NULL, draw)
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