Grcov report - smask.c

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/*

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 * Copyright © 2008 Chris Wilson

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 * Permission to use, copy, modify, distribute, and sell this software

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 * and its documentation for any purpose is hereby granted without

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 * fee, provided that the above copyright notice appear in all copies

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 * and that both that copyright notice and this permission notice

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 * appear in supporting documentation, and that the name of

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 * Chris Wilson not be used in advertising or publicity pertaining to

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 * distribution of the software without specific, written prior

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 * permission. Chris Wilson makes no representations about the

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 * suitability of this software for any purpose.  It is provided "as

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 * is" without express or implied warranty.

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 * CHRIS WILSON DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS

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 * SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND

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 * FITNESS, IN NO EVENT SHALL CHRIS WILSON BE LIABLE FOR ANY SPECIAL,

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 * INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER

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 * RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION

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 * OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR

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 * IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.

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 * Author: Chris Wilson <chris@chris-wilson.co.uk>

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*/

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#include "cairo-test.h"

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static cairo_test_status_t

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3

draw (cairo_t *cr, int width, int height)

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3

    uint32_t data[] = {

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	0x80000000, 0x80000000,

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	0x80000000, 0x80000000,

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};

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    cairo_surface_t *mask, *mask2;

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    cairo_pattern_t *pattern;

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    cairo_t *cr2;

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    cairo_text_extents_t extents;

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3

    mask = cairo_surface_create_similar (cairo_get_group_target (cr),

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				         CAIRO_CONTENT_ALPHA,

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					 width, height);

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3

    cr2 = cairo_create (mask);

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3

    cairo_surface_destroy (mask);

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3

    cairo_save (cr2); {

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3

	cairo_set_operator (cr2, CAIRO_OPERATOR_CLEAR);

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3

	cairo_paint (cr2);

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3

    } cairo_restore (cr2);

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3

    pattern = cairo_pattern_create_linear (0, 0, 0, height);

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3

    cairo_pattern_add_color_stop_rgba (pattern, 0.00, 0., 0., 0., 0.0);

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3

    cairo_pattern_add_color_stop_rgba (pattern, 0.80, 0., 0., 0., 0.0);

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3

    cairo_pattern_add_color_stop_rgba (pattern, 0.90, 1., 1., 1., 0.25);

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3

    cairo_pattern_add_color_stop_rgba (pattern, 1.00, 1., 1., 1., 1.0);

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3

    cairo_set_source (cr2, pattern);

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3

    cairo_pattern_destroy (pattern);

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3

    cairo_paint (cr2);

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3

    pattern = cairo_pattern_create_linear (0, 0, width, height);

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3

    cairo_pattern_add_color_stop_rgba (pattern, 0.00, 0., 0., 0., 0.);

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3

    cairo_pattern_add_color_stop_rgba (pattern, 0.25, 1., 1., 1., 1.);

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3

    cairo_pattern_add_color_stop_rgba (pattern, 0.50, 1., 1., 1., .5);

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3

    cairo_pattern_add_color_stop_rgba (pattern, 0.75, 1., 1., 1., 1.);

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3

    cairo_pattern_add_color_stop_rgba (pattern, 1.00, 0., 0., 0., 0.);

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3

    cairo_set_source (cr2, pattern);

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3

    cairo_pattern_destroy (pattern);

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3

    mask2 = cairo_image_surface_create_for_data ((unsigned char *) data,

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						CAIRO_FORMAT_ARGB32, 2, 2, 8);

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3

    pattern = cairo_pattern_create_for_surface (mask2);

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3

    cairo_pattern_set_extend (pattern, CAIRO_EXTEND_REPEAT);

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3

    cairo_mask (cr2, pattern);

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3

    cairo_pattern_destroy (pattern);

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3

    cairo_arc (cr2, 0.5 * width, 0.5 * height - 10, 0.2 * height, 0, 2 * M_PI);

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3

    cairo_fill (cr2);

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3

    cairo_arc (cr2, 0.5 * width, 0.5 * height - 10, 0.25 * height, 0, 2 * M_PI);

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3

    cairo_stroke (cr2);

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3

    cairo_select_font_face (cr2,

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			    CAIRO_TEST_FONT_FAMILY " Sans",

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			    CAIRO_FONT_SLANT_NORMAL,

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			    CAIRO_FONT_WEIGHT_NORMAL);

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3

    cairo_set_font_size (cr2, 0.3 * height);

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3

    cairo_text_extents (cr2, "FG", &extents);

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3

    cairo_move_to (cr2,

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3

		   floor ((width - extents.width) / 2 + 0.5) - extents.x_bearing,

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3

		   floor (height - extents.height - 0.5) - extents.y_bearing - 5);

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3

    cairo_show_text (cr2, "FG");

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3

    cairo_set_source_rgb (cr, 0, 0, 1.0);

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3

    cairo_paint (cr);

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3

    pattern = cairo_pattern_create_radial (

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	    0.5 * width, 0.5 * height, 0,

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	    0.5 * width, 0.5 * height, 0.5 *height);

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3

    cairo_pattern_add_color_stop_rgba (pattern, 0.00, 0., 0., 0., 0.);

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3

    cairo_pattern_add_color_stop_rgba (pattern, 0.25, 1., 0., 0., 1.);

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3

    cairo_pattern_add_color_stop_rgba (pattern, 0.50, 1., 0., 0., .5);

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3

    cairo_pattern_add_color_stop_rgba (pattern, 1.00, 1., 0., 0., 1.);

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3

    cairo_set_source (cr, pattern);

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3

    cairo_pattern_destroy (pattern);

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3

    cairo_mask_surface (cr, cairo_get_target (cr2), 0, 0);

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3

    cairo_destroy (cr2);

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3

    cairo_surface_finish (mask2); /* data will go out of scope */

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3

    cairo_surface_destroy (mask2);

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3

    return CAIRO_TEST_SUCCESS;

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1

CAIRO_TEST (smask,

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	    "Test the support of \"soft\" masks",

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	    "smask", /* keywords */

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	    NULL, /* requirements */

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	    60, 60,

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	    NULL, draw)