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/*
* Copyright © 2008 Chris Wilson
*
* 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
* Chris Wilson not be used in advertising or publicity pertaining to
* distribution of the software without specific, written prior
* permission. Chris Wilson makes no representations about the
* suitability of this software for any purpose. It is provided "as
* is" without express or implied warranty.
*
* CHRIS WILSON DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS
* SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND
* FITNESS, IN NO EVENT SHALL CHRIS WILSON 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: Chris Wilson <chris@chris-wilson.co.uk>
*/
#include "cairo-test.h"
#define LINE_WIDTH 12.
#define SIZE (5 * LINE_WIDTH)
#define PAD (2 * LINE_WIDTH)
static void
make_path (cairo_t *cr)
{
const struct {
double x, y;
} scales[] = {
{ 1, 1 },
{ -1, 1 },
{ 1, -1 },
{ -1, -1 },
};
unsigned int i, j;
for (j = 0; j < ARRAY_LENGTH (scales); j++) {
cairo_save (cr);
/* include reflections to flip the orientation of the join */
cairo_scale (cr, scales[j].x, scales[j].y);
for (i = 0; i < 3; i++) {
cairo_new_sub_path (cr);
cairo_move_to (cr, 0, -9*LINE_WIDTH/4 - 2);
cairo_line_to (cr, 0, -2*LINE_WIDTH - 2);
cairo_line_to (cr, LINE_WIDTH/4, -2*LINE_WIDTH - 2);
cairo_rotate (cr, M_PI / 4.);
}
cairo_restore (cr);
}
}
static cairo_test_status_t
draw (cairo_t *cr, int width, int height)
{
cairo_line_join_t join;
cairo_save (cr);
cairo_set_source_rgb (cr, 1.0, 1.0, 1.0); /* white */
cairo_paint (cr);
cairo_restore (cr);
cairo_set_line_width (cr, LINE_WIDTH);
cairo_translate (cr, PAD + SIZE / 2., PAD + SIZE / 2.);
for (join = CAIRO_LINE_JOIN_MITER; join <= CAIRO_LINE_JOIN_BEVEL; join++) {
cairo_save (cr);
cairo_set_line_join (cr, join);
cairo_set_line_cap (cr, CAIRO_LINE_CAP_BUTT);
make_path (cr);
cairo_stroke (cr);
cairo_translate (cr, 0, SIZE + PAD);
cairo_set_line_cap (cr, CAIRO_LINE_CAP_ROUND);
make_path (cr);
cairo_stroke (cr);
cairo_translate (cr, 0, SIZE + PAD);
cairo_set_line_cap (cr, CAIRO_LINE_CAP_SQUARE);
make_path (cr);
cairo_stroke (cr);
cairo_restore (cr);
cairo_translate (cr, SIZE + PAD, 0);
}
return CAIRO_TEST_SUCCESS;
}
CAIRO_TEST (joins,
"Test joins",
"stroke joins", /* keywords */
NULL, /* requirements */
3 * (PAD + SIZE) + PAD,
3 * (PAD + SIZE) + PAD,
NULL, draw)
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