t('Image manipulation functions'),
'page callback' => 'fedora_repository_image_manip',
'type' => MENU_CALLBACK,
'access arguments' => array('view fedora collection'),
);
return $items;
}
/**
* Call out to the Drupal ImageAPI module and return the resulting image as a stream.
*
* @param string $pid
* @param string $dsid
* @param string $op
* @param string $params
*/
function fedora_repository_image_manip($pid = '', $dsid = '', $op = '', $params = '') {
module_load_include( 'inc', 'Fedora_Repository', 'ObjectHelper');
module_load_include( 'module', 'imageapi');
$obj = new ObjectHelper();
$mimetype = $obj->getMimeType( $pid, $dsid);
$ext = substr( strstr($mimetype, '/'), 1);
$op = (!empty($_GET['op']) ? $_GET['op'] : '');
$safe_pid = str_replace(':', '_', $pid);
$cache_key = 'fedora_repository_image_manip_'.md5($safe_pid.'_'.$dsid.'_'.$ext.'_'.$op.(isset($_GET['width'])?'_'.$_GET['width']:'').(isset($_GET['height'])?'_'.$_GET['height']:''));
if (($file=cache_get($cache_key))===0)
{
//added the slash as sys_get_temp_dir in linux does not seem to include the slash
$tmp_file_name = sys_get_temp_dir() .'/'. $safe_pid . '_'. $dsid . '.'. $ext;
$handle = fopen( $tmp_file_name, "w");
$numbytes = fwrite($handle, $obj->getStream($pid, $dsid));
fclose($handle);
if ($numbytes == 0) {
return;
}
$image = imageapi_image_open( $tmp_file_name);
switch ($op) {
case 'scale':
if (!empty( $_GET['height'] ) || !empty( $_GET['width'])) {
imageapi_image_scale($image, $_GET['width'], $_GET['height']);
}
case 'centerscale':
if (!empty($_GET['height']) && !empty($_GET['width'])) {
imageapi_image_scale_and_crop($image, $_GET['width'], $_GET['height']);
}
}
imageapi_image_close($image);
$file = file_get_contents($tmp_file_name);
cache_set($cache_key,$file,'cache',time()+variable_get('fedora_image_blocks_cache_time',3600));
file_delete($tmp_file_name);
} else {
$file = $file->data;
}
header("Content-type: $mimetype");
header('Content-Disposition: attachment; filename="'. $dsid . '.'. $ext . '"');
echo $file;
// return "$numbytes bytes written to ".sys_get_temp_dir()."$pid_$dsid.$ext\n";
}
/**
* Implementation of hook_form_alter
*
* @param unknown_type $form
* @param unknown_type $form_state
* @param unknown_type $form_id
*/
/*
function fedora_imageapi_form_alter( &$form, $form_state, $form_id) {
switch ( $form_id ) {
case 'fedora_repository_admin':
$fedora_base_url = $form['fedora_base_url']['#default_value'];
$fedora_server_url = substr($fedora_base_url,0,strpos($fedora_base_url,'/',7));
// Add the Djatoka server location. Set it to default to the same server as fedora.
$form['djatoka_server_url'] = array (
'#type' => 'textfield',
'#title' => ''.t('Fedora Image API Module').'
'.t('aDORe Djatoka image server resolver URL'),
'#default_value' => variable_get('djatoka_server_url', $fedora_server_url.'/adore-djatoka/resolver' ),
'#description' => t('The location of your aDORe Djatoka image server, if you have one installed.'),
'#weight' => 1,
);
$form['openlayers_server_url'] = array(
'#type' => 'textfield',
'#title' => t('OpenLayers servlet URL'),
'#default_value' => variable_get('openlayers_server_url', $fedora_server_url.'/islandora/OpenLayers'),
'#description' => t('URL of your installation of the OpenLayers servlet, if you have one.'),
'#weight' => 1,
);
$form['buttons']['#weight'] = 2;
break;
}
}
function show_openlayers_viewer() {
$output = 'Hi.';
return $output;
}
*/