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https://github.com/moodle/moodle.git
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"MDL-17381, improve wikimedia repository plugin and supports thumbnail, credits to Raul Kern, thanks"
This commit is contained in:
Dongsheng Cai
parent
e09e9d55b6
commit
e281f544f0
@ -1,4 +1,4 @@
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<?php
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$string['keyword'] = 'Image name';
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$string['keyword'] = 'Full text';
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$string['repositoryname'] = 'Wikimedia';
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$string['wikimedia:view'] = 'View wikimedia repository';
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@ -33,26 +33,18 @@ class repository_wikimedia extends repository {
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public function __construct($repositoryid, $context = SITEID, $options = array()) {
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parent::__construct($repositoryid, $context, $options);
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$this->keyword = optional_param('wikimedia_keyword', '', PARAM_RAW);
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if (empty($this->keyword)) {
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$this->keyword = optional_param('s', '', PARAM_RAW);
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}
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}
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public function get_listing($path = '', $page = '') {
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global $OUTPUT;
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$client = new wikimedia;
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$result = $client->search_images($this->keyword);
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$list = array();
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$list['list'] = array();
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foreach ($result as $title=>$url) {
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$list['list'][] = array(
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'title'=>substr($title, 5),
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'thumbnail'=>$OUTPUT->pix_url(file_extension_icon('xx.jpg', 32)),
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// plugin-dependent unique path to the file (id, url, path, etc.)
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'source'=>$url,
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// the accessible url of the file
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'url'=>$url
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);
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}
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$list['list'] = $client->search_images($this->keyword);
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$list['nologin'] = true;
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return $list;
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}
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// login
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// login
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public function check_login() {
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return !empty($this->keyword);
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}
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@ -75,15 +67,16 @@ class repository_wikimedia extends repository {
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public function global_search() {
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return false;
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}
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public function search($text) {
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public function search($search_text) {
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$client = new wikimedia;
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$search_result = array();
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$search_result['list'] = array();
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$search_result['list'] = $client->search_images($search_text);
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return $search_result;
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}
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// when logout button on file picker is clicked, this function will be
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// called.
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public function logout() {
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return true;
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return $this->print_login();
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}
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public static function get_type_option_names() {
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return null;
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@ -17,14 +17,20 @@
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/**
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* wikimedia class
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* A class used to browse images from wikimedia
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* class for communication with Wikimedia Commons API
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*
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* @author Dongsheng Cai <dongsheng@moodle.com>
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* @author Dongsheng Cai <dongsheng@moodle.com>, Raul Kern <raunator@gmail.com>
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* @license http://www.gnu.org/copyleft/gpl.html GNU Public License
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*/
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*/
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define('WIKIMEDIA_THUMBS_PER_PAGE', 24);
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define('WIKIMEDIA_FILE_NS', 6);
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define('WIKIMEDIA_IMAGE_SIDE_LENGTH', 1024);
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class wikimedia {
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private $_conn = null;
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private $_param = array();
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public function __construct($url = '') {
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if (empty($url)) {
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$this->api = 'http://commons.wikimedia.org/w/api.php';
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@ -90,21 +96,92 @@ class wikimedia {
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}
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return $image_urls;
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}
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public function search_images($title) {
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$image_urls = array();
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/**
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* Generate thumbnail URL from image URL.
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*
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* @param string $image_url
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* @param int $orig_width
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* @param int $orig_height
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* @param int $thumb_width
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* @global object OUTPUT
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* @return string
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*/
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public function get_thumb_url($image_url, $orig_width, $orig_height, $thumb_width=75) {
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global $OUTPUT;
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if ($orig_width <= $thumb_width AND $orig_height <= $thumb_width) {
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return $image_url;
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} else {
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$thumb_url = '';
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$commons_main_dir = 'http://upload.wikimedia.org/wikipedia/commons/';
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if ($image_url) {
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$short_path = str_replace($commons_main_dir, '', $image_url);
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$extension = pathinfo($short_path, PATHINFO_EXTENSION);
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if (strcmp($extension, 'gif') == 0) { //no thumb for gifs
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return $OUTPUT->pix_url(file_extension_icon('xx.jpg', 32));
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}
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$dir_parts = explode('/', $short_path);
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$file_name = end($dir_parts);
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if ($orig_height > $orig_width) {
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$thumb_width = round($thumb_width * $orig_width/$orig_height);
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}
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$thumb_url = $commons_main_dir . 'thumb/' . implode('/', $dir_parts) . '/'. $thumb_width .'px-' . $file_name;
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if (strcmp($extension, 'svg') == 0) { //png thumb for svg-s
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$thumb_url .= '.png';
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}
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}
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return $thumb_url;
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}
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}
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/**
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* Search for images and return photos array.
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*
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* @param string $keyword
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* @return array
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*/
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public function search_images($keyword) {
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$files_array = array();
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$this->_param['action'] = 'query';
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$this->_param['generator'] = 'search';
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$this->_param['gsrsearch'] = $title;
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$this->_param['gsrnamespace'] = 6;
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$this->_param['gsrsearch'] = $keyword;
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$this->_param['gsrnamespace'] = WIKIMEDIA_FILE_NS;
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$this->_param['gsrlimit'] = WIKIMEDIA_THUMBS_PER_PAGE;
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$this->_param['prop'] = 'imageinfo';
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$this->_param['iiprop'] = 'url';
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$content = $this->_conn->post($this->api, $this->_param);
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$this->_param['iiprop'] = 'url|dimensions|mime';
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$this->_param['iiurlwidth'] = WIKIMEDIA_IMAGE_SIDE_LENGTH;
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$this->_param['iiurlheight'] = WIKIMEDIA_IMAGE_SIDE_LENGTH;
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//didn't work with POST
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$content = $this->_conn->get($this->api, $this->_param);
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$result = unserialize($content);
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if (!empty($result['query']['pages'])) {
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foreach ($result['query']['pages'] as $page) {
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$image_urls[$page['title']] = $page['imageinfo'][0]['url'];
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$title = $page['title'];
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$file_type = $page['imageinfo'][0]['mime'];
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$image_types = array('image/jpeg', 'image/png', 'image/gif', 'image/svg+xml');
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if (in_array($file_type, $image_types)) { //is image
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$thumbnail = $this->get_thumb_url($page['imageinfo'][0]['url'], $page['imageinfo'][0]['width'], $page['imageinfo'][0]['height']);
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$source = $page['imageinfo'][0]['thumburl']; //upload scaled down image
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$extension = pathinfo($title, PATHINFO_EXTENSION);
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if (strcmp($extension, 'svg') == 0) { //upload png version of svg-s
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$title .= '.png';
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}
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} else { //other file types
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$thumbnail = '';
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$source = $page['imageinfo'][0]['url'];
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}
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$files_array[] = array(
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'title'=>substr($title, 5), //chop off 'File:'
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'thumbnail'=>$thumbnail,
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'thumbnail_width'=>120,
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'thumbnail_height'=>120,
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// plugin-dependent unique path to the file (id, url, path, etc.)
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'source'=>$source,
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// the accessible url of the file
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'url'=>$page['imageinfo'][0]['descriptionurl']
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);
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}
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}
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return $image_urls;
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return $files_array;
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}
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}
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