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/*
* Copyright 2008 Kai-Uwe Behrmann
*
* 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
* Kai-Uwe Behrmann not be used in advertising or publicity pertaining to
* distribution of the software without specific, written prior
* permission. Kai-Uwe Behrmann makes no representations about the
* suitability of this software for any purpose. It is provided "as
* is" without express or implied warranty.
*
* KAI_UWE BEHRMANN DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS
* SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND
* FITNESS, IN NO EVENT SHALL KAI_UWE BEHRMANN 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: Kai-Uwe Behrmann <ku.b@gmx.de>
* Chris Wilson <chris@chris-wilson.co.uk>
*/
#include "cairo-test.h"
static const char png_filename[] = "romedalen.png";
static cairo_surface_t *
create_mask (cairo_t *dst, int width, int height)
{
cairo_surface_t *mask;
cairo_t *cr;
mask = cairo_surface_create_similar (cairo_get_target (dst),
CAIRO_CONTENT_ALPHA,
width, height);
cr = cairo_create (mask);
cairo_surface_destroy (mask);
cairo_set_operator (cr, CAIRO_OPERATOR_OVER);
cairo_rectangle (cr, width/4, height/4, width/2, height/2);
cairo_fill (cr);
mask = cairo_surface_reference (cairo_get_target (cr));
cairo_destroy (cr);
return mask;
}
static cairo_test_status_t
draw (cairo_t *cr, int width, int height)
{
const cairo_test_context_t *ctx = cairo_test_get_context (cr);
cairo_surface_t *image, *mask;
image = cairo_test_create_surface_from_png (ctx, png_filename);
mask = create_mask (cr, 40, 40);
/* opaque background */
cairo_paint (cr);
/* center */
cairo_translate (cr,
(width - cairo_image_surface_get_width (image)) / 2.,
(height - cairo_image_surface_get_height (image)) / 2.);
/* rotate 30 degree around the center */
cairo_translate (cr, width/2., height/2.);
cairo_rotate (cr, -30 * 2 * M_PI / 360);
cairo_translate (cr, -width/2., -height/2.);
/* place the image on our surface */
cairo_set_source_surface (cr, image, 0, 0);
/* reset the drawing matrix */
cairo_identity_matrix (cr);
/* fill nicely */
cairo_scale (cr, width / 40., height / 40.);
/* apply the mask */
cairo_mask_surface (cr, mask, 0, 0);
cairo_surface_destroy (mask);
cairo_surface_destroy (image);
return CAIRO_TEST_SUCCESS;
}
CAIRO_TEST (mask_transformed_similar,
"Test that cairo_mask() is affected properly by the CTM and not the image",
"mask", /* keywords */
NULL, /* requirements */
80, 80,
NULL, draw)
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