diff options
Diffstat (limited to 'libs/cairo-1.16.0/test/surface-pattern-operator.c')
| -rw-r--r-- | libs/cairo-1.16.0/test/surface-pattern-operator.c | 119 |
1 files changed, 119 insertions, 0 deletions
diff --git a/libs/cairo-1.16.0/test/surface-pattern-operator.c b/libs/cairo-1.16.0/test/surface-pattern-operator.c new file mode 100644 index 0000000..994baf9 --- /dev/null +++ b/libs/cairo-1.16.0/test/surface-pattern-operator.c @@ -0,0 +1,119 @@ +/* -*- Mode: c; c-basic-offset: 4; indent-tabs-mode: t; tab-width: 8; -*- */ +/* + * Copyright 2009 Andrea Canciani + * + * Permission is hereby granted, free of charge, to any person + * obtaining a copy of this software and associated documentation + * files (the "Software"), to deal in the Software without + * restriction, including without limitation the rights to use, copy, + * modify, merge, publish, distribute, sublicense, and/or sell copies + * of the Software, and to permit persons to whom the Software is + * furnished to do so, subject to the following conditions: + * + * The above copyright notice and this permission notice shall be + * included in all copies or substantial portions of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, + * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF + * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND + * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS + * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN + * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN + * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE + * SOFTWARE. + * + * Author: Andrea Canciani <ranma42@gmail.com> + */ + +#include "cairo-test.h" + +#define N_OPERATORS (CAIRO_OPERATOR_SATURATE + 1) +#define HEIGHT 16 +#define WIDTH 16 +#define PAD 3 + +static cairo_pattern_t* +_create_pattern (cairo_surface_t *target, cairo_content_t content, int width, int height) +{ + cairo_pattern_t *pattern; + cairo_surface_t *surface; + cairo_t *cr; + + surface = cairo_surface_create_similar (target, content, width, height); + cr = cairo_create (surface); + cairo_surface_destroy (surface); + + cairo_set_source_rgb (cr, 1, 0, 0); + cairo_arc (cr, 0.5 * width, 0.5 * height, 0.45 * height, -M_PI / 4, 3 * M_PI / 4); + cairo_fill (cr); + + pattern = cairo_pattern_create_for_surface (cairo_get_target (cr)); + cairo_destroy (cr); + + return pattern; +} + +static cairo_test_status_t +draw (cairo_t *cr, int width, int height) +{ + cairo_pattern_t *alpha_pattern, *color_alpha_pattern, *pattern; + unsigned int n, i; + + alpha_pattern = _create_pattern (cairo_get_target (cr), + CAIRO_CONTENT_ALPHA, + 0.9 * WIDTH, 0.9 * HEIGHT); + color_alpha_pattern = _create_pattern (cairo_get_target (cr), + CAIRO_CONTENT_COLOR_ALPHA, + 0.9 * WIDTH, 0.9 * HEIGHT); + + pattern = cairo_pattern_create_linear (WIDTH, 0, 0, HEIGHT); + cairo_pattern_add_color_stop_rgba (pattern, 0.2, 0, 0, 1, 1); + cairo_pattern_add_color_stop_rgba (pattern, 0.8, 0, 0, 1, 0); + + cairo_translate (cr, PAD, PAD); + + for (n = 0; n < N_OPERATORS; n++) { + cairo_save (cr); + for (i = 0; i < 4; i++) { + cairo_reset_clip (cr); + cairo_rectangle (cr, 0, 0, WIDTH, HEIGHT); + cairo_clip (cr); + + cairo_set_source (cr, pattern); + cairo_set_operator (cr, CAIRO_OPERATOR_OVER); + if (i & 2) { + cairo_paint (cr); + } else { + cairo_rectangle (cr, WIDTH/2, HEIGHT/2, WIDTH, HEIGHT); + cairo_fill (cr); + } + + cairo_set_source (cr, i & 1 ? alpha_pattern : color_alpha_pattern); + cairo_set_operator (cr, n); + if (i & 2) { + cairo_paint (cr); + } else { + cairo_rectangle (cr, WIDTH/2, HEIGHT/2, WIDTH, HEIGHT); + cairo_fill (cr); + } + + cairo_translate (cr, 0, HEIGHT+PAD); + } + cairo_restore (cr); + + cairo_translate (cr, WIDTH+PAD, 0); + } + + cairo_pattern_destroy (pattern); + cairo_pattern_destroy (alpha_pattern); + cairo_pattern_destroy (color_alpha_pattern); + + return CAIRO_TEST_SUCCESS; +} + +CAIRO_TEST (surface_pattern_operator, + "Tests alpha-only and alpha-color sources with all operators", + "surface, pattern, operator", /* keywords */ + NULL, /* requirements */ + (WIDTH+PAD) * N_OPERATORS + PAD, 4*HEIGHT + 5*PAD, + NULL, draw) |