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Diffstat (limited to 'libs/cairo-1.16.0/test/joins.c')
| -rw-r--r-- | libs/cairo-1.16.0/test/joins.c | 109 |
1 files changed, 109 insertions, 0 deletions
diff --git a/libs/cairo-1.16.0/test/joins.c b/libs/cairo-1.16.0/test/joins.c new file mode 100644 index 0000000..40ef72e --- /dev/null +++ b/libs/cairo-1.16.0/test/joins.c @@ -0,0 +1,109 @@ +/* + * 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) + |