/**
* Check if the image is embedded in an artefact of type:
* comment, annotation, annotationfeedback, blog, textbox, editnote, text.
* Please check first that the fileid is of type ArtefactTypeImage and that the download
* is called with the embedded flag set.
*
* @param int $fileid the id of the file to check.
* @param array $includeresourcetypes an array of extra artefact types to include in the check.
* @param array $excluderesourcetypes an array of artefact types to exclude from the check.
* @return boolean TRUE the image is visible; FALSE the image is not visible.
*/
function check_is_embedded_image_visible($fileid, $includeresourcetypes = null, $excluderesourcetypes = null)
{
$isvisible = false;
// Check for resource types a file may be embeded in.
$resourcetypes = array('comment', 'annotation', 'annotationfeedback', 'blog', 'textbox', 'editnote', 'text');
if (!empty($includeresourcetypes)) {
if (!is_array($includeresourcetypes)) {
$includeresourcetypes = array($includeresourcetypes);
}
$resourcetypes = array_merge($defaultresourcetypes, $includeresourcetypes);
}
if (!empty($excluderesourcetypes)) {
if (!is_array($excluderesourcetypes)) {
$excluderesourcetypes = array($excluderesourcetypes);
}
$resourcetypes = array_diff($resourcetypes, $excluderesourcetypes);
}
foreach ($resourcetypes as $resourcetype) {
$resourceid = param_integer($resourcetype, null);
if ($resourceid) {
$isvisible = EmbeddedImage::can_see_embedded_image($fileid, $resourcetype, $resourceid);
}
if ($isvisible) {
break;
}
}
return $isvisible;
}
