/**
* Return a valid img tag for an image.
*
* @param Omeka_Record_AbstractRecord $record
* @param array $props Image tag attributes
* @param string $format Derivative image type (thumbnail, etc.)
* @return string
*/
public function image_tag($record, $props, $format)
{
if (!($record && $record instanceof Omeka_Record_AbstractRecord)) {
return false;
}
// Use the default representative file.
$file = $record->getFile();
if (!$file) {
return false;
}
if ($file->hasThumbnail()) {
$uri = $file->getWebPath($format);
} else {
$uri = img($this->_getFallbackImage($file));
}
$props['src'] = $uri;
/**
* Determine alt attribute for images
* Should use the following in this order:
* 1. passed 'alt' prop
* 2. first Dublin Core Title for $file
* 3. original filename for $file
*/
$alt = '';
if (isset($props['alt'])) {
$alt = $props['alt'];
} else {
if ($fileTitle = metadata($file, 'display title', array('no_escape' => true))) {
$alt = $fileTitle;
}
}
$props['alt'] = $alt;
$title = '';
if (isset($props['title'])) {
$title = $props['title'];
} else {
$title = $alt;
}
$props['title'] = $title;
// Build the img tag
return '<img ' . tag_attributes($props) . '>';
}
