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117 lines
3.9 KiB
117 lines
3.9 KiB
13 years ago
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<?php
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function fedora_imageapi_menu() {
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$items = array();
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$items['fedora/imageapi'] = array(
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'title' => t('Image manipulation functions'),
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'page callback' => 'islandora_repository_image_manip',
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'type' => MENU_CALLBACK,
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'access arguments' => array('view fedora collection'),
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);
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return $items;
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}
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/**
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* Call out to the Drupal ImageAPI module and return the resulting image as a stream.
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*
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* @param string $pid
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* @param string $dsid
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* @param string $op
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* @param string $params
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*/
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function islandora_repository_image_manip($pid = '', $dsid = '', $op = '', $params = '') {
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module_load_include('inc', 'Fedora_Repository', 'ObjectHelper');
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module_load_include('module', 'imageapi');
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$obj = new ObjectHelper();
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$mimetype = $obj->getMimeType($pid, $dsid);
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$ext = substr(strstr($mimetype, '/'), 1);
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$op = (!empty($_GET['op']) ? $_GET['op'] : '');
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$safe_pid = str_replace(':', '_', $pid);
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$cache_key = 'islandora_repository_image_manip_' . md5($safe_pid . '_' . $dsid . '_' . $ext . '_' . $op . (isset($_GET['width']) ? '_' . $_GET['width'] : '') . (isset($_GET['height']) ? '_' . $_GET['height'] : ''));
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if (($file = cache_get($cache_key)) === 0) {
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//added the slash as sys_get_temp_dir in linux does not seem to include the slash
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$tmp_file_name = sys_get_temp_dir() . '/' . $safe_pid . '_' . $dsid . '.' . $ext;
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$handle = fopen($tmp_file_name, "w");
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$numbytes = fwrite($handle, $obj->getStream($pid, $dsid));
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fclose($handle);
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if ($numbytes == 0) {
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return;
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}
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$image = imageapi_image_open($tmp_file_name);
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switch ($op) {
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case 'scale':
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if (!empty($_GET['height']) || !empty($_GET['width'])) {
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imageapi_image_scale($image, $_GET['width'], $_GET['height']);
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}
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case 'centerscale':
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if (!empty($_GET['height']) && !empty($_GET['width'])) {
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imageapi_image_scale_and_crop($image, $_GET['width'], $_GET['height']);
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}
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}
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imageapi_image_close($image);
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$file = file_get_contents($tmp_file_name);
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cache_set($cache_key, $file, 'cache', time() + variable_get('fedora_image_blocks_cache_time', 3600));
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file_delete($tmp_file_name);
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}
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else {
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$file = $file->data;
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}
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header("Content-type: $mimetype");
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header('Content-Disposition: attachment; filename="' . $dsid . '.' . $ext . '"');
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echo $file;
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// return "$numbytes bytes written to ".sys_get_temp_dir()."$pid_$dsid.$ext\n";
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}
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/**
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* Implementation of hook_form_alter
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*
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* @param unknown_type $form
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* @param unknown_type $form_state
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* @param unknown_type $form_id
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*/
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/*
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function fedora_imageapi_form_alter( &$form, $form_state, $form_id) {
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switch ( $form_id ) {
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case 'islandora_repository_admin':
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$fedora_base_url = $form['fedora_base_url']['#default_value'];
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$fedora_server_url = substr($fedora_base_url,0,strpos($fedora_base_url,'/',7));
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// Add the Djatoka server location. Set it to default to the same server as fedora.
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$form['djatoka_server_url'] = array (
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'#type' => 'textfield',
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'#title' => '<h3>'.t('Fedora Image API Module').'</h3><br />'.t('aDORe Djatoka image server resolver URL'),
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'#default_value' => variable_get('djatoka_server_url', $fedora_server_url.'/adore-djatoka/resolver' ),
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'#description' => t('The location of your <a href="http://african.lanl.gov/aDORe/projects/djatoka/" title="aDORe Djatoka Home Page">aDORe Djatoka</a> image server, if you have one installed.'),
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'#weight' => 1,
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);
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$form['openlayers_server_url'] = array(
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'#type' => 'textfield',
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'#title' => t('OpenLayers servlet URL'),
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'#default_value' => variable_get('openlayers_server_url', $fedora_server_url.'/islandora/OpenLayers'),
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'#description' => t('URL of your installation of the <a href="http://openlayers.org/">OpenLayers</a> servlet, if you have one.'),
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'#weight' => 1,
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);
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$form['buttons']['#weight'] = 2;
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break;
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}
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}
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function show_openlayers_viewer() {
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$output = 'Hi.';
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return $output;
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}
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*/
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