| /* -*- 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) |