diff options
Diffstat (limited to 'libs/cairo-1.16.0/test/paint-with-alpha.c')
| -rw-r--r-- | libs/cairo-1.16.0/test/paint-with-alpha.c | 148 |
1 files changed, 148 insertions, 0 deletions
diff --git a/libs/cairo-1.16.0/test/paint-with-alpha.c b/libs/cairo-1.16.0/test/paint-with-alpha.c new file mode 100644 index 0000000..8daa935 --- /dev/null +++ b/libs/cairo-1.16.0/test/paint-with-alpha.c @@ -0,0 +1,148 @@ +/* + * Copyright © 2005 Red Hat, Inc. + * Copyright © 2006 Red Hat, Inc. + * + * 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 + * Red Hat, Inc. not be used in advertising or publicity pertaining to + * distribution of the software without specific, written prior + * permission. Red Hat, Inc. makes no representations about the + * suitability of this software for any purpose. It is provided "as + * is" without express or implied warranty. + * + * RED HAT, INC. DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS + * SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND + * FITNESS, IN NO EVENT SHALL RED HAT, INC. 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: Carl D. Worth <cworth@cworth.org> + */ + +#include "cairo-test.h" + +static uint32_t data[16] = { + 0xffffffff, 0xffffffff, 0xffff0000, 0xffff0000, + 0xffffffff, 0xffffffff, 0xffff0000, 0xffff0000, + + 0xff00ff00, 0xff00ff00, 0xff0000ff, 0xff0000ff, + 0xff00ff00, 0xff00ff00, 0xff0000ff, 0xff0000ff +}; +static cairo_test_status_t +draw (cairo_t *cr, int width, int height) +{ + cairo_surface_t *surface; + + surface = cairo_image_surface_create_for_data ((unsigned char *) data, + CAIRO_FORMAT_RGB24, 4, 4, 16); + + cairo_test_paint_checkered (cr); + + cairo_scale (cr, 4, 4); + + cairo_set_source_surface (cr, surface, 2 , 2); + cairo_pattern_set_filter (cairo_get_source (cr), CAIRO_FILTER_NEAREST); + cairo_paint_with_alpha (cr, 0.5); + + cairo_surface_finish (surface); /* data will go out of scope */ + cairo_surface_destroy (surface); + + return CAIRO_TEST_SUCCESS; +} + +static cairo_test_status_t +draw_solid_clip (cairo_t *cr, int width, int height) +{ + cairo_test_paint_checkered (cr); + + cairo_rectangle (cr, 2.5, 2.5, 27, 27); + cairo_clip (cr); + + cairo_set_source_rgb (cr, 1., 0.,0.); + cairo_paint_with_alpha (cr, 0.5); + + return CAIRO_TEST_SUCCESS; +} + +static cairo_test_status_t +draw_clip (cairo_t *cr, int width, int height) +{ + cairo_surface_t *surface; + + surface = cairo_image_surface_create_for_data ((unsigned char *) data, + CAIRO_FORMAT_RGB24, 4, 4, 16); + + cairo_test_paint_checkered (cr); + + cairo_rectangle (cr, 10.5, 10.5, 11, 11); + cairo_clip (cr); + + cairo_scale (cr, 4, 4); + + cairo_set_source_surface (cr, surface, 2 , 2); + cairo_pattern_set_filter (cairo_get_source (cr), CAIRO_FILTER_NEAREST); + cairo_paint_with_alpha (cr, 0.5); + + cairo_surface_finish (surface); /* data will go out of scope */ + cairo_surface_destroy (surface); + + return CAIRO_TEST_SUCCESS; +} + +static cairo_test_status_t +draw_clip_mask (cairo_t *cr, int width, int height) +{ + cairo_surface_t *surface; + + surface = cairo_image_surface_create_for_data ((unsigned char *) data, + CAIRO_FORMAT_RGB24, 4, 4, 16); + + cairo_test_paint_checkered (cr); + + cairo_move_to (cr, 16, 5); + cairo_line_to (cr, 5, 16); + cairo_line_to (cr, 16, 27); + cairo_line_to (cr, 27, 16); + cairo_clip (cr); + + cairo_scale (cr, 4, 4); + + cairo_set_source_surface (cr, surface, 2 , 2); + cairo_pattern_set_filter (cairo_get_source (cr), CAIRO_FILTER_NEAREST); + cairo_paint_with_alpha (cr, 0.5); + + cairo_surface_finish (surface); /* data will go out of scope */ + cairo_surface_destroy (surface); + + return CAIRO_TEST_SUCCESS; +} + +CAIRO_TEST (paint_with_alpha, + "Simple test of cairo_paint_with_alpha", + "paint, alpha", /* keywords */ + NULL, /* requirements */ + 32, 32, + NULL, draw) +CAIRO_TEST (paint_with_alpha_solid_clip, + "Simple test of cairo_paint_with_alpha+unaligned clip", + "paint, alpha, clip", /* keywords */ + NULL, /* requirements */ + 32, 32, + NULL, draw_solid_clip) +CAIRO_TEST (paint_with_alpha_clip, + "Simple test of cairo_paint_with_alpha+unaligned clip", + "paint, alpha, clip", /* keywords */ + NULL, /* requirements */ + 32, 32, + NULL, draw_clip) +CAIRO_TEST (paint_with_alpha_clip_mask, + "Simple test of cairo_paint_with_alpha+unaligned clip", + "paint, alpha, clip", /* keywords */ + NULL, /* requirements */ + 32, 32, + NULL, draw_clip_mask) |