diff options
Diffstat (limited to 'libs/cairo-1.16.0/test/operator-alpha.c')
| -rw-r--r-- | libs/cairo-1.16.0/test/operator-alpha.c | 65 |
1 files changed, 65 insertions, 0 deletions
diff --git a/libs/cairo-1.16.0/test/operator-alpha.c b/libs/cairo-1.16.0/test/operator-alpha.c new file mode 100644 index 0000000..1ce4ecd --- /dev/null +++ b/libs/cairo-1.16.0/test/operator-alpha.c @@ -0,0 +1,65 @@ +/* + * 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 N_OPERATORS (CAIRO_OPERATOR_SATURATE + 1) +#define SIZE 10 +#define PAD 3 + +static cairo_test_status_t +draw (cairo_t *cr, int width, int height) +{ + unsigned int n; + + cairo_translate (cr, PAD, PAD); + + for (n = 0; n < N_OPERATORS; n++) { + cairo_reset_clip (cr); + cairo_rectangle (cr, 0, 0, SIZE, SIZE); + cairo_clip (cr); + + cairo_set_source_rgb (cr, 1, 0, 0); + cairo_set_operator (cr, CAIRO_OPERATOR_OVER); + cairo_rectangle (cr, 0, 0, SIZE-PAD, SIZE-PAD); + cairo_fill (cr); + + cairo_set_source_rgba (cr, 0, 0, 1, .33); + cairo_set_operator (cr, n); + cairo_rectangle (cr, PAD, PAD, SIZE-PAD, SIZE-PAD); + cairo_fill (cr); + + cairo_translate (cr, SIZE+PAD, 0); + } + + return CAIRO_TEST_SUCCESS; +} + +CAIRO_TEST (operator_alpha, + "Tests using set_operator() with an non-opaque source", + "operator, alpha", /* keywords */ + NULL, /* requirements */ + (SIZE+PAD) * N_OPERATORS + PAD, SIZE + 2*PAD, + NULL, draw) |