diff options
Diffstat (limited to 'libs/cairo-1.16.0/test/smask.c')
| -rw-r--r-- | libs/cairo-1.16.0/test/smask.c | 123 |
1 files changed, 123 insertions, 0 deletions
diff --git a/libs/cairo-1.16.0/test/smask.c b/libs/cairo-1.16.0/test/smask.c new file mode 100644 index 0000000..4cf3adb --- /dev/null +++ b/libs/cairo-1.16.0/test/smask.c @@ -0,0 +1,123 @@ +/* + * 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" + +static cairo_test_status_t +draw (cairo_t *cr, int width, int height) +{ + uint32_t data[] = { + 0x80000000, 0x80000000, + 0x80000000, 0x80000000, + }; + + cairo_surface_t *mask, *mask2; + cairo_pattern_t *pattern; + cairo_t *cr2; + cairo_text_extents_t extents; + + mask = cairo_surface_create_similar (cairo_get_group_target (cr), + CAIRO_CONTENT_ALPHA, + width, height); + cr2 = cairo_create (mask); + cairo_surface_destroy (mask); + + cairo_save (cr2); { + cairo_set_operator (cr2, CAIRO_OPERATOR_CLEAR); + cairo_paint (cr2); + } cairo_restore (cr2); + + pattern = cairo_pattern_create_linear (0, 0, 0, height); + cairo_pattern_add_color_stop_rgba (pattern, 0.00, 0., 0., 0., 0.0); + cairo_pattern_add_color_stop_rgba (pattern, 0.80, 0., 0., 0., 0.0); + cairo_pattern_add_color_stop_rgba (pattern, 0.90, 1., 1., 1., 0.25); + cairo_pattern_add_color_stop_rgba (pattern, 1.00, 1., 1., 1., 1.0); + cairo_set_source (cr2, pattern); + cairo_pattern_destroy (pattern); + + cairo_paint (cr2); + + pattern = cairo_pattern_create_linear (0, 0, width, height); + cairo_pattern_add_color_stop_rgba (pattern, 0.00, 0., 0., 0., 0.); + cairo_pattern_add_color_stop_rgba (pattern, 0.25, 1., 1., 1., 1.); + cairo_pattern_add_color_stop_rgba (pattern, 0.50, 1., 1., 1., .5); + cairo_pattern_add_color_stop_rgba (pattern, 0.75, 1., 1., 1., 1.); + cairo_pattern_add_color_stop_rgba (pattern, 1.00, 0., 0., 0., 0.); + cairo_set_source (cr2, pattern); + cairo_pattern_destroy (pattern); + + mask2 = cairo_image_surface_create_for_data ((unsigned char *) data, + CAIRO_FORMAT_ARGB32, 2, 2, 8); + pattern = cairo_pattern_create_for_surface (mask2); + cairo_pattern_set_extend (pattern, CAIRO_EXTEND_REPEAT); + cairo_mask (cr2, pattern); + cairo_pattern_destroy (pattern); + + cairo_arc (cr2, 0.5 * width, 0.5 * height - 10, 0.2 * height, 0, 2 * M_PI); + cairo_fill (cr2); + + cairo_arc (cr2, 0.5 * width, 0.5 * height - 10, 0.25 * height, 0, 2 * M_PI); + cairo_stroke (cr2); + + cairo_select_font_face (cr2, + CAIRO_TEST_FONT_FAMILY " Sans", + CAIRO_FONT_SLANT_NORMAL, + CAIRO_FONT_WEIGHT_NORMAL); + cairo_set_font_size (cr2, 0.3 * height); + + cairo_text_extents (cr2, "FG", &extents); + cairo_move_to (cr2, + floor ((width - extents.width) / 2 + 0.5) - extents.x_bearing, + floor (height - extents.height - 0.5) - extents.y_bearing - 5); + cairo_show_text (cr2, "FG"); + + cairo_set_source_rgb (cr, 0, 0, 1.0); + cairo_paint (cr); + + pattern = cairo_pattern_create_radial ( + 0.5 * width, 0.5 * height, 0, + 0.5 * width, 0.5 * height, 0.5 *height); + cairo_pattern_add_color_stop_rgba (pattern, 0.00, 0., 0., 0., 0.); + cairo_pattern_add_color_stop_rgba (pattern, 0.25, 1., 0., 0., 1.); + cairo_pattern_add_color_stop_rgba (pattern, 0.50, 1., 0., 0., .5); + cairo_pattern_add_color_stop_rgba (pattern, 1.00, 1., 0., 0., 1.); + cairo_set_source (cr, pattern); + cairo_pattern_destroy (pattern); + + cairo_mask_surface (cr, cairo_get_target (cr2), 0, 0); + cairo_destroy (cr2); + + cairo_surface_finish (mask2); /* data will go out of scope */ + cairo_surface_destroy (mask2); + + return CAIRO_TEST_SUCCESS; +} + +CAIRO_TEST (smask, + "Test the support of \"soft\" masks", + "smask", /* keywords */ + NULL, /* requirements */ + 60, 60, + NULL, draw) |