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/*
* Copyright © 2006 Jeff Muizelaar
*
* 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
* Jeff Muizelaar. not be used in advertising or publicity pertaining to
* distribution of the software without specific, written prior
* permission. Jeff Muizelaar. makes no representations about the
* suitability of this software for any purpose. It is provided "as
* is" without express or implied warranty.
*
* JEFF MUIZELAAR DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS
* SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND
* FITNESS, IN NO EVENT SHALL JEFF MUIZELAAR 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: Jeff Muizelaar <jeff@infidigm.net>
*/
#include "cairo-test.h"
#define IMAGE_WIDTH 19
#define IMAGE_HEIGHT 61
/* A test of the two extremes of dashing: a solid line
* and an invisible one. Also test that capping works
* on invisible lines.
*/
static void
draw_dash (cairo_t *cr, double *dash, int num_dashes)
{
cairo_set_dash (cr, dash, num_dashes, 0.0);
cairo_move_to (cr, 1, 2);
cairo_line_to (cr, 18, 2);
cairo_stroke (cr);
cairo_translate (cr, 0, 3);
}
static cairo_test_status_t
draw (cairo_t *cr, int width, int height)
{
static double solid_line[] = { 4, 0 };
static double invisible_line[] = { 0, 4 };
static double dotted_line[] = { 0, 6 };
static double zero_1_of_3[] = { 0, 2, 3 };
static double zero_2_of_3[] = { 1, 0, 3 };
static double zero_3_of_3[] = { 1, 2, 0 };
static double zero_1_of_4[] = { 0, 2, 3, 4 };
static double zero_2_of_4[] = { 1, 0, 3, 4 };
static double zero_3_of_4[] = { 1, 2, 0, 4 };
static double zero_4_of_4[] = { 1, 2, 3, 0 };
static double zero_1_2_of_4[] = { 0, 0, 3, 4 };
static double zero_1_3_of_4[] = { 0, 2, 0, 4 };
/* Clearly it would be nice to draw this one as well, but it seems to trigger a bug in ghostscript. */
#if BUG_FIXED_IN_GHOSTSCRIPT
static double zero_1_4_of_4[] = { 0, 2, 3, 0 };
#endif
static double zero_2_3_of_4[] = { 1, 0, 0, 4 };
static double zero_2_4_of_4[] = { 1, 0, 3, 0 };
static double zero_3_4_of_4[] = { 1, 2, 0, 0 };
static double zero_1_2_3_of_4[] = { 0, 0, 0, 4 };
static double zero_1_2_4_of_4[] = { 0, 0, 3, 0 };
static double zero_1_3_4_of_4[] = { 0, 2, 0, 0 };
static double zero_2_3_4_of_4[] = { 1, 0, 0, 0 };
cairo_set_source_rgb (cr, 1, 0, 0);
cairo_set_line_width (cr, 2);
draw_dash (cr, solid_line, 2);
draw_dash (cr, invisible_line, 2);
cairo_set_line_cap (cr, CAIRO_LINE_CAP_ROUND);
draw_dash (cr, dotted_line, 2);
cairo_set_line_cap (cr, CAIRO_LINE_CAP_BUTT);
draw_dash (cr, zero_1_of_3, 3);
draw_dash (cr, zero_2_of_3, 3);
draw_dash (cr, zero_3_of_3, 3);
draw_dash (cr, zero_1_of_4, 4);
draw_dash (cr, zero_2_of_4, 4);
draw_dash (cr, zero_3_of_4, 4);
draw_dash (cr, zero_4_of_4, 4);
draw_dash (cr, zero_1_2_of_4, 4);
draw_dash (cr, zero_1_3_of_4, 4);
#if BUG_FIXED_IN_GHOSTSCRIPT
draw_dash (cr, zero_1_4_of_4, 4);
#endif
draw_dash (cr, zero_2_3_of_4, 4);
draw_dash (cr, zero_2_4_of_4, 4);
draw_dash (cr, zero_3_4_of_4, 4);
draw_dash (cr, zero_1_2_3_of_4, 4);
draw_dash (cr, zero_1_2_4_of_4, 4);
draw_dash (cr, zero_1_3_4_of_4, 4);
draw_dash (cr, zero_2_3_4_of_4, 4);
return CAIRO_TEST_SUCCESS;
}
CAIRO_TEST (dash_zero_length,
"Tests cairo_set_dash with zero length",
"dash, stroke", /* keywords */
NULL, /* requirements */
IMAGE_WIDTH, IMAGE_HEIGHT,
NULL, draw)
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