Grcov report - mask-transformed-similar.c

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/*

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 * Copyright 2008 Kai-Uwe Behrmann

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 * Permission to use, copy, modify, distribute, and sell this software

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 * and its documentation for any purpose is hereby granted without

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 * fee, provided that the above copyright notice appear in all copies

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 * and that both that copyright notice and this permission notice

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 * appear in supporting documentation, and that the name of

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 * Kai-Uwe Behrmann not be used in advertising or publicity pertaining to

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 * distribution of the software without specific, written prior

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 * permission. Kai-Uwe Behrmann makes no representations about the

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 * suitability of this software for any purpose.  It is provided "as

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 * is" without express or implied warranty.

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 * KAI_UWE BEHRMANN DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS

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 * SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND

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 * FITNESS, IN NO EVENT SHALL KAI_UWE BEHRMANN BE LIABLE FOR ANY SPECIAL,

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 * INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER

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 * RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION

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 * OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR

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 * IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.

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 * Author: Kai-Uwe Behrmann <ku.b@gmx.de>

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 *         Chris Wilson <chris@chris-wilson.co.uk>

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*/

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#include "cairo-test.h"

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static const char png_filename[] = "romedalen.png";

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static cairo_surface_t *

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3

create_mask (cairo_t *dst, int width, int height)

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    cairo_surface_t *mask;

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    cairo_t *cr;

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3

    mask = cairo_surface_create_similar (cairo_get_target (dst),

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	                                 CAIRO_CONTENT_ALPHA,

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					 width, height);

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3

    cr = cairo_create (mask);

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3

    cairo_surface_destroy (mask);

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3

    cairo_set_operator (cr, CAIRO_OPERATOR_OVER);

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3

    cairo_rectangle (cr, width/4, height/4, width/2, height/2);

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3

    cairo_fill (cr);

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3

    mask = cairo_surface_reference (cairo_get_target (cr));

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3

    cairo_destroy (cr);

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3

    return mask;

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static cairo_test_status_t

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3

draw (cairo_t *cr, int width, int height)

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3

    const cairo_test_context_t *ctx = cairo_test_get_context (cr);

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    cairo_surface_t *image, *mask;

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3

    image = cairo_test_create_surface_from_png (ctx, png_filename);

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3

    mask = create_mask (cr, 40, 40);

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    /* opaque background */

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3

    cairo_paint (cr);

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    /* center */

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    cairo_translate (cr,

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3

	             (width - cairo_image_surface_get_width (image)) / 2.,

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		     (height - cairo_image_surface_get_height (image)) / 2.);

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    /* rotate 30 degree around the center */

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    cairo_translate (cr, width/2., height/2.);

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    cairo_rotate (cr, -30 * 2 * M_PI / 360);

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    cairo_translate (cr, -width/2., -height/2.);

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    /* place the image on our surface */

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3

    cairo_set_source_surface (cr, image, 0, 0);

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    /* reset the drawing matrix */

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3

    cairo_identity_matrix (cr);

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    /* fill nicely */

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3

    cairo_scale (cr, width / 40., height / 40.);

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    /* apply the mask */

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3

    cairo_mask_surface (cr, mask, 0, 0);

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    cairo_surface_destroy (mask);

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    cairo_surface_destroy (image);

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    return CAIRO_TEST_SUCCESS;

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CAIRO_TEST (mask_transformed_similar,

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	    "Test that cairo_mask() is affected properly by the CTM and not the image",

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	    "mask", /* keywords */

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	    NULL, /* requirements */

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	    80, 80,

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	    NULL, draw)