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/*
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 * Copyright © 2007 Adrian Johnson
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 *
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 * Permission is hereby granted, free of charge, to any person
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 * obtaining a copy of this software and associated documentation
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 * files (the "Software"), to deal in the Software without
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 * restriction, including without limitation the rights to use, copy,
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 * modify, merge, publish, distribute, sublicense, and/or sell copies
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 * of the Software, and to permit persons to whom the Software is
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 * furnished to do so, subject to the following conditions:
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 *
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 * The above copyright notice and this permission notice shall be
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 * included in all copies or substantial portions of the Software.
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 *
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 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
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 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
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 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
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 * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
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 * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
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 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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 * SOFTWARE.
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 *
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 * Author: Adrian Johnson <ajohnson@redneon.com>
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 */
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#include "cairo-test.h"

            

        

            

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#define SIZE 40

            

        

            

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#define PAD 2

            

        

            

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#define WIDTH (PAD + SIZE + PAD)

            

        

            

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#define HEIGHT WIDTH

            

        

            

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/* This test is designed to test that PDF viewers use the correct

            

        

            

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 * alpha values in an Alpha SMasks. Some viewers use the color values

            

        

            

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 * instead of the alpha. The test draws a triangle and rectangle in a

            

        

            

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 * group then draws the group using cairo_mask(). The mask consists of

            

        

            

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 * a circle with the rgba (0.4, 0.4, 0.4, 0.8) and the background rgba

            

        

            

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 * (0.8, 0.8, 0.8, 0.4).

            

        

            

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 */

            

        

            

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static cairo_test_status_t

            

        

            

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

            

        

            

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{

            

        

            

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    cairo_pattern_t *pattern;

            

        

            

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    cairo_translate (cr, PAD, PAD);

            

        

            

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    /* mask */

            

        

            

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    cairo_push_group (cr);

            

        

            

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    cairo_set_source_rgba (cr, 0.8, 0.8, 0.8, 0.4);

            

        

            

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    cairo_paint (cr);

            

        

            

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    cairo_arc (cr, SIZE / 2, SIZE / 2, SIZE / 6, 0., 2. * M_PI);

            

        

            

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    cairo_set_source_rgba (cr, 0.4, 0.4, 0.4, 0.8);

            

        

            

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    cairo_fill (cr);

            

        

            

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    pattern = cairo_pop_group (cr);

            

        

            

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    /* source */

            

        

            

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    cairo_push_group (cr);

            

        

            

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    cairo_rectangle (cr, 0.3 * SIZE, 0.2 * SIZE, 0.5 * SIZE, 0.5 * SIZE);

            

        

            

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                3
            

            

                
    cairo_set_source_rgb (cr, 0, 0, 1);

            

        

            

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    cairo_fill (cr);

            

        

            

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    cairo_move_to     (cr,   0.0,          0.8 * SIZE);

            

        

            

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    cairo_rel_line_to (cr,   0.7 * SIZE,   0.0);

            

        

            

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    cairo_rel_line_to (cr, -0.375 * SIZE, -0.6 * SIZE);

            

        

            

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    cairo_close_path (cr);

            

        

            

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    cairo_set_source_rgb (cr, 0, 1, 0);

            

        

            

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    cairo_fill (cr);

            

        

            

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                3
            

            

                
    cairo_pop_group_to_source (cr);

            

        

            

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    cairo_mask (cr, pattern);

            

        

            

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    cairo_pattern_destroy (pattern);

            

        

            

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    return CAIRO_TEST_SUCCESS;

            

        

            

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}

            

        

            

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                1
            

            

                
CAIRO_TEST (mask_alpha,

            

        

            

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	    "A simple test painting a group through a circle mask",

            

        

            

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	    "mask, alpha", /* keywords */

            

        

            

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	    NULL, /* requirements */

            

        

            

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	    WIDTH, HEIGHT,

            

        

            

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	    NULL, draw)