/*
 * Copyright © 2005 Red Hat, Inc.
 *
 * 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
 * Red Hat, Inc. not be used in advertising or publicity pertaining to
 * distribution of the software without specific, written prior
 * permission. Red Hat, Inc. makes no representations about the
 * suitability of this software for any purpose.  It is provided "as
 * is" without express or implied warranty.
 *
 * RED HAT, INC. DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS
 * SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND
 * FITNESS, IN NO EVENT SHALL RED HAT, INC. 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: Carl D. Worth <cworth@cworth.org>
 */

#include "cairo_test.h"

#define IMAGE_WIDTH 100
#define IMAGE_HEIGHT 100

cairo_test_t test = {
    "line_dash",
    "Tests cairo_set_dash",
    IMAGE_WIDTH, IMAGE_HEIGHT
};

static cairo_test_status_t
draw (cairo_t *cr, int width, int height)
{
    int i;
    double dashes[] = { 1 };

    cairo_set_line_width (cr, 1);

    /* Basic 1-1 dash pattern */
    cairo_set_dash (cr, dashes, 1, 0.);
    
    cairo_move_to (cr, 10, 10.5);
    cairo_line_to (cr, 90, 10.5);
    cairo_stroke (cr);

    /* Offset by 0.5, should give a constant 50% gray */
    cairo_move_to (cr, 10.5, 20.5);
    cairo_line_to (cr, 90., 20.5);
    cairo_stroke (cr);

    /* Offset by changing the dash offset rather than moving the line  */
    cairo_set_dash (cr, dashes, 1, 0.5);
    
    cairo_move_to (cr, 10, 30.5);
    cairo_line_to (cr, 90, 30.5);
    cairo_stroke (cr);

    /* Negative dash offset  */
    cairo_set_dash (cr, dashes, 1, - 5);
    
    cairo_move_to (cr, 10, 40.5);
    cairo_line_to (cr, 90, 40.5);
    cairo_stroke (cr);

    return CAIRO_TEST_SUCCESS;
}

int
main (void)
{
    return cairo_test (&test, draw);
}