Grcov report - pixman-rotate.c

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/*

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 * Copyright © 2007 Red Hat, Inc.

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 * Permission is hereby granted, free of charge, to any person

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 * obtaining a copy of this software and associated documentation

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 * files (the "Software"), to deal in the Software without

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 * restriction, including without limitation the rights to use, copy,

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 * modify, merge, publish, distribute, sublicense, and/or sell copies

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 * of the Software, and to permit persons to whom the Software is

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 * furnished to do so, subject to the following conditions:

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 * The above copyright notice and this permission notice shall be

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 * included in all copies or substantial portions of the Software.

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 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,

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 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF

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 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND

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 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS

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 * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN

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 * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN

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 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE

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 * SOFTWARE.

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 * Author: Kristian Høgsberg <krh@redhat.com>

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*/

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#include "cairo-test.h"

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#include <stdio.h>

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#include <stdlib.h>

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#include <string.h>

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#include <math.h>

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#include <cairo.h>

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#define WIDTH	32

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#define HEIGHT	WIDTH

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#define IMAGE_WIDTH	(3 * WIDTH)

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#define IMAGE_HEIGHT	IMAGE_WIDTH

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/* Draw the word cairo at NUM_TEXT different angles */

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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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    cairo_surface_t *stamp;

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    cairo_t *cr2;

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    /* Draw a translucent rectangle for reference where the rotated

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     * image should be. */

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3

    cairo_new_path (cr);

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3

    cairo_rectangle (cr, WIDTH, HEIGHT, WIDTH, HEIGHT);

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3

    cairo_set_source_rgba (cr, 1, 1, 0, 0.3);

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3

    cairo_fill (cr);

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#if 1 /* Set to 0 to generate reference image */

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3

    cairo_translate (cr, 2 * WIDTH, 2 * HEIGHT);

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3

    cairo_rotate (cr, M_PI);

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#else

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    cairo_translate (cr, WIDTH, HEIGHT);

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#endif

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3

    stamp = cairo_surface_create_similar (cairo_get_group_target (cr),

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					  CAIRO_CONTENT_COLOR_ALPHA,

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					  WIDTH, HEIGHT);

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3

    cr2 = cairo_create (stamp);

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3

    cairo_surface_destroy (stamp);

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3

	cairo_new_path (cr2);

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3

	cairo_rectangle (cr2, WIDTH / 4, HEIGHT / 4, WIDTH / 2, HEIGHT / 2);

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3

	cairo_set_source_rgba (cr2, 1, 0, 0, 0.8);

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	cairo_fill (cr2);

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3

	cairo_rectangle (cr2, 0, 0, WIDTH, HEIGHT);

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3

	cairo_set_line_width (cr2, 2);

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3

	cairo_set_source_rgb (cr2, 0, 0, 0);

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	cairo_stroke (cr2);

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    cairo_set_source_surface (cr, cairo_get_target (cr2), 0, 0);

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    cairo_destroy (cr2);

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    cairo_paint (cr);

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    return CAIRO_TEST_SUCCESS;

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CAIRO_TEST (pixman_rotate,

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	    "Exposes pixman off-by-one error when rotating",

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	    "image, transform", /* keywords */

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	    NULL, /* requirements */

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	    IMAGE_WIDTH, IMAGE_HEIGHT,

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	    NULL, draw)