Grcov report - surface-pattern-operator.c

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/* -*- Mode: c; c-basic-offset: 4; indent-tabs-mode: t; tab-width: 8; -*- */

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/*

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 * Copyright 2009 Andrea Canciani

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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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 * 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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 * 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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 * Author: Andrea Canciani <ranma42@gmail.com>

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*/

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#include "cairo-test.h"

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#define N_OPERATORS (CAIRO_OPERATOR_SATURATE + 1)

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#define HEIGHT 16

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#define WIDTH 16

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#define PAD 3

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static cairo_pattern_t*

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_create_pattern (cairo_surface_t *target, cairo_content_t content, int width, int height)

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    cairo_pattern_t *pattern;

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    cairo_surface_t *surface;

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    cairo_t *cr;

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    surface = cairo_surface_create_similar (target, content, width, height);

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    cr = cairo_create (surface);

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    cairo_surface_destroy (surface);

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    cairo_set_source_rgb (cr, 1, 0, 0);

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    cairo_arc (cr, 0.5 * width, 0.5 * height, 0.45 * height, -M_PI / 4, 3 * M_PI / 4);

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    cairo_fill (cr);

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    pattern = cairo_pattern_create_for_surface (cairo_get_target (cr));

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    cairo_destroy (cr);

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    return pattern;

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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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    cairo_pattern_t *alpha_pattern, *color_alpha_pattern, *pattern;

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    unsigned int n, i;

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3

    alpha_pattern = _create_pattern (cairo_get_target (cr),

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				     CAIRO_CONTENT_ALPHA,

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				     0.9 * WIDTH, 0.9 * HEIGHT);

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    color_alpha_pattern = _create_pattern (cairo_get_target (cr),

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					   CAIRO_CONTENT_COLOR_ALPHA,

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					   0.9 * WIDTH, 0.9 * HEIGHT);

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    pattern = cairo_pattern_create_linear (WIDTH, 0, 0, HEIGHT);

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    cairo_pattern_add_color_stop_rgba (pattern, 0.2, 0, 0, 1, 1);

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    cairo_pattern_add_color_stop_rgba (pattern, 0.8, 0, 0, 1, 0);

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    cairo_translate (cr, PAD, PAD);

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    for (n = 0; n < N_OPERATORS; n++) {

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	cairo_save (cr);

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	for (i = 0; i < 4; i++) {

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	    cairo_reset_clip (cr);

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	    cairo_rectangle (cr, 0, 0, WIDTH, HEIGHT);

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	    cairo_clip (cr);

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	    cairo_set_source (cr, pattern);

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	    cairo_set_operator (cr, CAIRO_OPERATOR_OVER);

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	    if (i & 2) {

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	        cairo_paint (cr);

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	    } else {

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	        cairo_rectangle (cr, WIDTH/2, HEIGHT/2, WIDTH, HEIGHT);

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		cairo_fill (cr);

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	    cairo_set_source (cr, i & 1 ? alpha_pattern : color_alpha_pattern);

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	    cairo_set_operator (cr, n);

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	    if (i & 2) {

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	        cairo_paint (cr);

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	    } else {

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	        cairo_rectangle (cr, WIDTH/2, HEIGHT/2, WIDTH, HEIGHT);

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		cairo_fill (cr);

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	    cairo_translate (cr, 0, HEIGHT+PAD);

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	cairo_restore (cr);

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	cairo_translate (cr, WIDTH+PAD, 0);

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3

    cairo_pattern_destroy (pattern);

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    cairo_pattern_destroy (alpha_pattern);

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    cairo_pattern_destroy (color_alpha_pattern);

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    return CAIRO_TEST_SUCCESS;

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CAIRO_TEST (surface_pattern_operator,

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	    "Tests alpha-only and alpha-color sources with all operators",

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	    "surface, pattern, operator", /* keywords */

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	    NULL, /* requirements */

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	    (WIDTH+PAD) * N_OPERATORS + PAD, 4*HEIGHT + 5*PAD,

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	    NULL, draw)