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Файловый менеджер - Редактировать - /home/harasnat/www/learning/admin/tool/brickfield/classes/local/htmlchecker/common/checks/css_text_has_contrast.php

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<?php // This file is part of Moodle - http://moodle.org/ // // Moodle is free software: you can redistribute it and/or modify // it under the terms of the GNU General Public License as published by // the Free Software Foundation, either version 3 of the License, or // (at your option) any later version. // // Moodle is distributed in the hope that it will be useful, // but WITHOUT ANY WARRANTY; without even the implied warranty of // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the // GNU General Public License for more details. // // You should have received a copy of the GNU General Public License // along with Moodle. If not, see <http://www.gnu.org/licenses/>. namespace tool_brickfield\local\htmlchecker\common\checks; use DOMXPath; use tool_brickfield\local\htmlchecker\common\brickfield_accessibility_color_test; /** * Brickfield accessibility HTML checker library. * * @package tool_brickfield * @copyright 2020 onward: Brickfield Education Labs, www.brickfield.ie * @license http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later / class css_text_has_contrast extends brickfield_accessibility_color_test { /* @var int The default severity code for this test. / public $defaultseverity = \tool_brickfield\local\htmlchecker\brickfield_accessibility::BA_TEST_SEVERE; /* @var string The default background color. / public $defaultbackground = '#ffffff'; /* @var string The default color. / public $defaultcolor = '#000000'; /* * The main check function. This is called by the parent class to actually check content / public function check(): void { if (isset($this->options['css_background'])) { $this->defaultbackground = $this->options['css_background']; } if (isset($this->options['css_foreground'])) { $this->defaultcolor = $this->options['css_foreground']; } $xpath = new DOMXPath($this->dom); // Selects all nodes that have a style attribute OR 'strong' OR 'em' elements that: // Contain only the text in their text nodes // OR Have text nodes AND text nodes that are not equal to the string-value of the context node // OR Have a text node descendant that equals the string-value of the context node and has no style attributes. $entries = $xpath->query('//[(text() = . or ( ./[text() != .]) or (.//[text() = . and not(@style)])) and ((@style) or (name() = "strong") or (name() = "em"))]'); foreach ($entries as $element) { $style = $this->css->get_style($element); if (isset($style['background-color']) \|\| isset($style['color'])) { if (!isset($style['background-color'])) { $style['background-color'] = $this->defaultbackground; } if (!isset($style['color'])) { $style['color'] = $this->defaultcolor; } if ((isset($style['background']) \|\| isset($style['background-color'])) && isset($style['color']) && $element->nodeValue) { $background = (isset($style['background-color'])) ? $style['background-color'] : $style['background']; if (!$background \|\| !empty($this->options['css_only_use_default'])) { $background = $this->defaultbackground; } $style['color'] = '#' . $this->convert_color($style['color']); $style['background-color'] = '#' . $this->convert_color($background); if (substr($background, 0, 3) == "rgb") { $background = '#' . $this->convert_color($background); } $luminosity = $this->get_luminosity($style['color'], $background); $fontsize = 0; $bold = false; $italic = false; if (isset($style['font-size'])) { preg_match_all('!\d+!', $style['font-size'], $matches); $fontsize = $matches[0][0]; } if (isset($style['font-weight'])) { preg_match_all('!\d+!', $style['font-weight'], $matches); if (count($matches) > 0) { if ($matches >= 700) { $bold = true; } else { if ($style['font-weight'] === 'bold' \|\| $style['font-weight'] === 'bolder') { $bold = true; } } } } else if ($element->tagName === "strong") { $bold = true; $style['font-weight'] = "bold"; } else { $style['font-weight'] = "normal"; } if (isset($style['font-style'])) { if ($style['font-style'] === "italic") { $italic = true; } } else if ($element->tagName === "em") { $italic = true; $style['font-style'] = "italic"; } else { $style['font-style'] = "normal"; } if ($element->tagName === 'h1' \|\| $element->tagName === 'h2' \|\| $element->tagName === 'h3' \|\| $element->tagName === 'h4' \|\| $element->tagName === 'h5' \|\| $element->tagName === 'h6' \|\| $fontsize >= 18 \|\| $fontsize >= 14 && $bold) { if ($luminosity < 3) { $message = 'heading: background-color: ' . $background . '; color:' . $style["color"] . '; font-style: ' . $style['font-style'] . '; font-weight: ' . $style['font-weight'] . '; '; $this->add_report($element, $message); } } else { if ($luminosity < 4.5) { $message = 'text: background-color: ' . $background . '; color:' . $style["color"] . '; font-style: ' . $style['font-style'] . '; font-weight: ' . $style['font-weight'] . '; '; $this->add_report($element, $message); } } } } } } }

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