Grcov report - dash-zero-length.c

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/*

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 * Copyright © 2006 Jeff Muizelaar

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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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 * Jeff Muizelaar. 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. Jeff Muizelaar. 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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 * JEFF MUIZELAAR 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 JEFF MUIZELAAR 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: Jeff Muizelaar <jeff@infidigm.net>

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*/

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#include "cairo-test.h"

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#define IMAGE_WIDTH 19

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#define IMAGE_HEIGHT 61

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/* A test of the two extremes of dashing: a solid line

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 * and an invisible one. Also test that capping works

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 * on invisible lines.

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*/

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static void

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draw_dash (cairo_t *cr, double *dash, int num_dashes)

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    cairo_set_dash (cr, dash, num_dashes, 0.0);

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    cairo_move_to (cr,  1, 2);

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    cairo_line_to (cr, 18, 2);

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    cairo_stroke (cr);

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    cairo_translate (cr, 0, 3);

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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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    static double solid_line[] = { 4, 0 };

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    static double invisible_line[] = { 0, 4 };

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    static double dotted_line[] = { 0, 6 };

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    static double zero_1_of_3[] = { 0, 2, 3 };

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    static double zero_2_of_3[] = { 1, 0, 3 };

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    static double zero_3_of_3[] = { 1, 2, 0 };

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    static double zero_1_of_4[] = { 0, 2, 3, 4 };

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    static double zero_2_of_4[] = { 1, 0, 3, 4 };

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    static double zero_3_of_4[] = { 1, 2, 0, 4 };

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    static double zero_4_of_4[] = { 1, 2, 3, 0 };

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    static double zero_1_2_of_4[] = { 0, 0, 3, 4 };

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    static double zero_1_3_of_4[] = { 0, 2, 0, 4 };

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/* Clearly it would be nice to draw this one as well, but it seems to trigger a bug in ghostscript. */

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#if BUG_FIXED_IN_GHOSTSCRIPT

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    static double zero_1_4_of_4[] = { 0, 2, 3, 0 };

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#endif

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    static double zero_2_3_of_4[] = { 1, 0, 0, 4 };

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    static double zero_2_4_of_4[] = { 1, 0, 3, 0 };

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    static double zero_3_4_of_4[] = { 1, 2, 0, 0 };

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    static double zero_1_2_3_of_4[] = { 0, 0, 0, 4 };

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    static double zero_1_2_4_of_4[] = { 0, 0, 3, 0 };

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    static double zero_1_3_4_of_4[] = { 0, 2, 0, 0 };

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    static double zero_2_3_4_of_4[] = { 1, 0, 0, 0 };

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    cairo_set_source_rgb (cr, 1, 0, 0);

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    cairo_set_line_width (cr, 2);

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    draw_dash (cr, solid_line, 2);

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    draw_dash (cr, invisible_line, 2);

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    cairo_set_line_cap (cr, CAIRO_LINE_CAP_ROUND);

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    draw_dash (cr, dotted_line, 2);

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    cairo_set_line_cap (cr, CAIRO_LINE_CAP_BUTT);

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    draw_dash (cr, zero_1_of_3, 3);

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    draw_dash (cr, zero_2_of_3, 3);

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    draw_dash (cr, zero_3_of_3, 3);

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    draw_dash (cr, zero_1_of_4, 4);

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    draw_dash (cr, zero_2_of_4, 4);

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    draw_dash (cr, zero_3_of_4, 4);

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    draw_dash (cr, zero_4_of_4, 4);

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    draw_dash (cr, zero_1_2_of_4, 4);

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    draw_dash (cr, zero_1_3_of_4, 4);

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#if BUG_FIXED_IN_GHOSTSCRIPT

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    draw_dash (cr, zero_1_4_of_4, 4);

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#endif

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    draw_dash (cr, zero_2_3_of_4, 4);

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    draw_dash (cr, zero_2_4_of_4, 4);

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    draw_dash (cr, zero_3_4_of_4, 4);

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    draw_dash (cr, zero_1_2_3_of_4, 4);

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    draw_dash (cr, zero_1_2_4_of_4, 4);

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    draw_dash (cr, zero_1_3_4_of_4, 4);

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    draw_dash (cr, zero_2_3_4_of_4, 4);

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    return CAIRO_TEST_SUCCESS;

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CAIRO_TEST (dash_zero_length,

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	    "Tests cairo_set_dash with zero length",

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	    "dash, stroke", /* keywords */

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	    NULL, /* requirements */

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	    IMAGE_WIDTH, IMAGE_HEIGHT,

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	    NULL, draw)