问题描述
摘要 我需要用自定义图标替换Moodle文件选择器中的Moodle图标。我指的是出现在“文件选择器”窗口中“内容库”，“服务器文件”，“近期文件”和“私人文件”旁边的图标。 （请参见下面的屏幕截图）
screenshot of file picker with Moodle icons
当我拉出图像的URL时，我得到以下文件路径：website.com/theme/image.PHP/trema/repository_contentbank/1601324857/icon
我似乎无法找出该文件路径来替换Moodle图标图像。有谁知道该怎么做？
我尝试过的事情 我已经替换了“ pix”文件夹中的所有png和svg Moodle图标文件。没有骰子。
我已经浏览了“ repository”文件夹，“ contentbank”文件夹以及我能找到但没有运气的任何其他子文件夹。
我还查看了theme / image.PHP，以查找可以替换文件名但无法弄清楚文件名的实例。我在下面发布了该文件的代码。
define('NO_DEBUG_disPLAY',true);
// we need just the values from config.PHP and minlib.PHP
define('ABORT_AFTER_CONfig',true);
require('../config.PHP'); // this stops immediately at the beginning of lib/setup.PHP
if ($slashargument = min_get_slash_argument()) {
$slashargument = ltrim($slashargument,'/');
if (substr_count($slashargument,'/') < 3) {
image_not_found();
}
if (strpos($slashargument,'_s/') === 0) {
// Can't use SVG
$slashargument = substr($slashargument,3);
$usesvg = false;
} else {
$usesvg = true;
}
// image must be last because it may contain "/"
list($themename,$component,$rev,$image) = explode('/',$slashargument,4);
$themename = min_clean_param($themename,'SAFEDIR');
$component = min_clean_param($component,'SAFEDIR');
$rev = min_clean_param($rev,'INT');
$image = min_clean_param($image,'SAFEPATH');
} else {
$themename = min_optional_param('theme','standard','SAFEDIR');
$component = min_optional_param('component','core','SAFEDIR');
$rev = min_optional_param('rev',-1,'INT');
$image = min_optional_param('image','','SAFEPATH');
$usesvg = (bool)min_optional_param('svg','1','INT');
}
if (empty($component) or $component === 'moodle' or $component === 'core') {
$component = 'core';
}
if (empty($image)) {
image_not_found();
}
if (file_exists("$CFG->dirroot/theme/$themename/config.PHP")) {
// exists
} else if (!empty($CFG->themedir) and file_exists("$CFG->themedir/$themename/config.PHP")) {
// exists
} else {
image_not_found();
}
$candidatelocation = "$CFG->localcachedir/theme/$rev/$themename/pix/$component";
$etag = sha1("$rev/$themename/$component/$image");
if ($rev > 0) {
if (file_exists("$candidatelocation/$image.error")) {
// This is a major speedup if there are multiple missing images,// the only problem is that random requests may pollute our cache.
image_not_found();
}
$cacheimage = false;
if ($usesvg && file_exists("$candidatelocation/$image.svg")) {
$cacheimage = "$candidatelocation/$image.svg";
$ext = 'svg';
} else if (file_exists("$candidatelocation/$image.png")) {
$cacheimage = "$candidatelocation/$image.png";
$ext = 'png';
} else if (file_exists("$candidatelocation/$image.gif")) {
$cacheimage = "$candidatelocation/$image.gif";
$ext = 'gif';
} else if (file_exists("$candidatelocation/$image.jpg")) {
$cacheimage = "$candidatelocation/$image.jpg";
$ext = 'jpg';
} else if (file_exists("$candidatelocation/$image.jpeg")) {
$cacheimage = "$candidatelocation/$image.jpeg";
$ext = 'jpeg';
} else if (file_exists("$candidatelocation/$image.ico")) {
$cacheimage = "$candidatelocation/$image.ico";
$ext = 'ico';
}
if ($cacheimage) {
if (!empty($_SERVER['HTTP_IF_NONE_MATCH']) || !empty($_SERVER['HTTP_IF_MODIFIED_SINCE'])) {
// We do not actually need to verify the etag value because our files
// never change in cache because we increment the rev parameter.
// 90 days only - based on Moodle point release cadence being every 3 months.
$lifetime = 60 * 60 * 24 * 90;
$mimetype = get_contenttype_from_ext($ext);
header('HTTP/1.1 304 Not Modified');
header('Expires: '. gmdate('D,d M Y H:i:s',time() + $lifetime) .' GMT');
header('Cache-Control: public,max-age='.$lifetime.',no-transform');
header('Content-Type: '.$mimetype);
header('Etag: "'.$etag.'"');
die;
}
send_cached_image($cacheimage,$etag);
}
}
//=================================================================================
// ok,Now we need to start normal moodle script,we need to load all libs and $DB
define('ABORT_AFTER_CONfig_CANCEL',true);
define('NO_MOODLE_COOKIES',true); // Session not used here
define('NO_UPGRADE_CHECK',true); // Ignore upgrade check
require("$CFG->dirroot/lib/setup.PHP");
$theme = theme_config::load($themename);
$themerev = theme_get_revision();
if ($themerev <= 0 or $rev != $themerev) {
// Do not send caching headers if they do not request current revision,// we do not want to pollute browser caches with outdated images.
$imagefile = $theme->resolve_image_location($image,$usesvg);
if (empty($imagefile) or !is_readable($imagefile)) {
image_not_found();
}
send_uncached_image($imagefile);
}
make_localcache_directory('theme',false);
// At this stage caching is enabled,and either:
// * we have no cached copy of the image in any format (either SVG,or non-SVG); or
// * we have a cached copy of the SVG,but the non-SVG was requested by the browser.
//
// Because of the way in which the cache return code works above:
// * if we are allowed to return SVG,we do not need to cache the non-SVG version; however
// * if the browser has requested the non-SVG version,we *must* cache _both_ the SVG,and the non-SVG versions.
// First get all copies - including,potentially,the SVG version.
$imagefile = $theme->resolve_image_location($image,true);
if (empty($imagefile) || !is_readable($imagefile)) {
// Unable to find a copy of the image file in any format.
// We write a .error file for the image Now - this will be used above when searching for cached copies to prevent
// trying to find the image in the future.
if (!file_exists($candidatelocation)) {
@mkdir($candidatelocation,$CFG->directorypermissions,true);
}
// Make note we can not find this file.
$cacheimage = "$candidatelocation/$image.error";
$fp = fopen($cacheimage,'w');
fclose($fp);
image_not_found();
}
// The image was found,and it is readable.
$pathinfo = pathinfo($imagefile);
// Attempt to cache it if necessary.
// We don't really want to overwrite any existing cache items just for the sake of it.
$cacheimage = "$candidatelocation/$image.{$pathinfo['extension']}";
if (!file_exists($cacheimage)) {
// We don't already hold a cached copy of this image. Cache it Now.
$cacheimage = cache_image($image,$imagefile,$candidatelocation);
}
if (!$usesvg && $pathinfo['extension'] === 'svg') {
// The browser has requested that a non-SVG version be returned.
// The version found so far is the SVG version - try and find the non-SVG version.
$imagefile = $theme->resolve_image_location($image,false);
if (empty($imagefile) || !is_readable($imagefile)) {
// A non-SVG file Could not be found at all.
// The browser has requested a non-SVG version,so we must return image_not_found().
// We must *not* write an .error file because the SVG is available.
image_not_found();
}
// An non-SVG version of image was found - cache it.
// This will be used below in the image serving code.
$cacheimage = cache_image($image,$candidatelocation);
}
if (connection_aborted()) {
// Request was cancelled - do not send anything.
die;
}
// Make sure nothing Failed.
clearstatcache();
if (file_exists($cacheimage)) {
// The cached copy was found,and is accessible. Serve it.
send_cached_image($cacheimage,$etag);
}
send_uncached_image($imagefile);
//=================================================================================
//=== utility functions ==
// we are not using filelib because we need to fine tune all header
// parameters to get the best performance.
function send_cached_image($imagepath,$etag) {
global $CFG;
require("$CFG->dirroot/lib/xsendfilelib.PHP");
// 90 days only - based on Moodle point release cadence being every 3 months.
$lifetime = 60 * 60 * 24 * 90;
$pathinfo = pathinfo($imagepath);
$imagename = $pathinfo['filename'].'.'.$pathinfo['extension'];
$mimetype = get_contenttype_from_ext($pathinfo['extension']);
header('Etag: "'.$etag.'"');
header('Content-disposition: inline; filename="'.$imagename.'"');
header('Last-Modified: '. gmdate('D,filemtime($imagepath)) .' GMT');
header('Expires: '. gmdate('D,time() + $lifetime) .' GMT');
header('Pragma: ');
header('Cache-Control: public,no-transform,immutable');
header('Accept-Ranges: none');
header('Content-Type: '.$mimetype);
if (xsendfile($imagepath)) {
die;
}
if ($mimetype === 'image/svg+xml') {
// SVG format is a text file. So we can compress SVG files.
if (!min_enable_zlib_compression()) {
header('Content-Length: '.filesize($imagepath));
}
} else {
// No need to compress other image formats.
header('Content-Length: '.filesize($imagepath));
}
readfile($imagepath);
die;
}
function send_uncached_image($imagepath) {
$pathinfo = pathinfo($imagepath);
$imagename = $pathinfo['filename'].'.'.$pathinfo['extension'];
$mimetype = get_contenttype_from_ext($pathinfo['extension']);
header('Content-disposition: inline; filename="'.$imagename.'"');
header('Last-Modified: '. gmdate('D,time()) .' GMT');
header('Expires: '. gmdate('D,time() + 15) .' GMT');
header('Pragma: ');
header('Accept-Ranges: none');
header('Content-Type: '.$mimetype);
header('Content-Length: '.filesize($imagepath));
readfile($imagepath);
die;
}
function image_not_found() {
header('HTTP/1.0 404 not found');
die('Image was not found,sorry.');
}
function get_contenttype_from_ext($ext) {
switch ($ext) {
case 'svg':
return 'image/svg+xml';
case 'png':
return 'image/png';
case 'gif':
return 'image/gif';
case 'jpg':
case 'jpeg':
return 'image/jpeg';
case 'ico':
return 'image/vnd.microsoft.icon';
}
return 'document/unkNown';
}
/**
* Caches a given image file.
*
* @param string $image The name of the image that was requested.
* @param string $imagefile The location of the image file we want to cache.
* @param string $candidatelocation The location to cache it in.
* @return string The path to the cached image.
*/
function cache_image($image,$candidatelocation) {
global $CFG;
$pathinfo = pathinfo($imagefile);
$cacheimage = "$candidatelocation/$image.".$pathinfo['extension'];
clearstatcache();
if (!file_exists(dirname($cacheimage))) {
@mkdir(dirname($cacheimage),true);
}
// Prevent serving of incomplete file from concurrent request,// the rename() should be more atomic than copy().
ignore_user_abort(true);
if (@copy($imagefile,$cacheimage.'.tmp')) {
rename($cacheimage.'.tmp',$cacheimage);
@chmod($cacheimage,$CFG->filepermissions);
@unlink($cacheimage.'.tmp'); // just in case anything fails
}
return $cacheimage;
}解决方法
也许尝试启用“主题设计器模式”主页->站点管理->外观->主题->主题设置并清除缓存。