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<?php
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/* $Id: webfm_images.module,v 1.3 2008/01/31 17:22:50 robmilne Exp $ */
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function webfm_images_menu($may_cache){
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$items = array();
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if($may_cache){
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$items[] = array('title' => 'webfm images_js',
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'type' => 'callback',
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'callback' => 'webfm_images_js',
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'path' => 'webfm_images_js',
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'access' => 'access content');
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$items[] = array('path' => 'admin/settings/webfm_images',
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'title' => t('WebFM images'),
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'callback' => 'drupal_get_form',
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'callback arguments' => array('webfm_images_settings'),
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'access' => user_access('administer site configuration'),
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'type' => MENU_NORMAL_ITEM,
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'description' => t('Image module settings.'),
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);
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}
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return $items;
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}
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/**
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* Form API callback to validate the webfm_images settings form.
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*/
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function webfm_images_settings_validate($form_id, $form_values) {
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$err_element = array();
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$err_element[0] = 'webfm_images_sizes';
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foreach($form_values['webfm_images_sizes'] as $key => $size) {
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$err_element[1] = $key;
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$label = $size['label'];
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$width = $size['width'];
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$height = $size['height'];
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if(!empty($label)) {
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if(empty($width) && empty($height)) {
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$err_element[2] = 'label';
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form_set_error(implode('][', $err_element), t('There must be at least one dimension set for %label.', array('%label' => $label)));
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}
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if(!empty($width) && !is_numeric($width)) {
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$err_element[2] = 'width';
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form_set_error(implode('][', $err_element), t('Invalid width set for %label.', array('%label' => $label)));
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}
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if(!empty($height) && !is_numeric($height)) {
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$err_element[2] = 'height';
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form_set_error(implode('][', $err_element), t('Invalid height set for %label.', array('%label' => $label)));
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}
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} else if(!empty($width) || !empty($height)) {
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$err_element[2] = 'label';
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form_set_error(implode('][', $err_element), t('Size name missing.'));
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}
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}
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}
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/**
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* Admin settings callback.
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* The only settings available are the target dimensions of an image file
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* This settings code is mainly the same as the image module (in some cases character for character)
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* But, in this case we don't need to worry about upload settings or anything like that - the files are already on the system.
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*
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* @return a system settings form
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*/
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function webfm_images_settings() {
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// Sanity check : make sure we've got a working toolkit - yoinked from image module
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if (!image_get_toolkit()) {
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drupal_set_message(t('No image toolkit is currently enabled. Without one the image module will not be able to resize your images. You can select one from the <a href="!link">image toolkit settings page</a>.', array('!link' => url('admin/settings/image-toolkit'))), 'error');
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return false;
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}
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$form['sizes'] = array('#type' => 'fieldset', '#title' => t('Image sizes'));
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$form['sizes']['webfm_images_sizes'] = webfm_images_settings_sizes_form();
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return system_settings_form($form);
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}
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/**
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* Helper function to return the defined sizes (or proper defaults).
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*/
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function _webfm_images_get_sizes() {
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$sizes = variable_get('webfm_images_sizes', array(array('width' => 100, 'height' => 100, 'label' => 'thumbnail'), ));
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return array_filter($sizes, create_function('$size', 'return !empty($size["label"]);'));
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}
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function webfm_images_settings_sizes_form() {
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$sizes = _webfm_images_get_sizes();
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$form['#type'] = 'item';
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$form['#description'] = t('Create various pixel dimensions ("thumbnail" is required).<br />
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For each Label and dimension you enter a new "right-click" menu option will become available in WebFM for image files.<br />
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Clicking the menu item with resize the image based on these settings.');
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$form['#tree'] = TRUE;
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$form['#theme'] = 'webfm_images_settings_sizes_form';
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for ($i = 0; $i < 5; $i++) {
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$form[$i]['label'] = array('#type' => 'textfield', '#default_value' => $sizes[$i]['label'], '#size' => 25);
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if (in_array($sizes[$i]['label'], array('thumbnail'))) {
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$form[$i]['label']['#attributes'] = array('disabled' => 'disabled');
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$form[$i]['label']['#value'] = $sizes[$i]['label'];
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}
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$form[$i]['width'] = array('#type' => 'textfield', '#default_value' => $sizes[$i]['width'], '#size' => 5, '#maxlength' => 5);
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$form[$i]['height'] = array('#type' => 'textfield', '#default_value' => $sizes[$i]['height'], '#size' => 5, '#maxlength' => 5);
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}
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return $form;
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}
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function theme_webfm_images_settings_sizes_form (&$form) {
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$header = array(t('Label'), t('Width'), t('Height'));
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foreach (element_children($form) as $key) {
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$row = array();
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$row[] = drupal_render($form[$key]['label']);
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$row[] = drupal_render($form[$key]['width']);
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$row[] = drupal_render($form[$key]['height']);
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$rows[] = $row;
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}
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$output = theme('table', $header, $rows, $attributes = array('summary' => 'webfm_images_sizes'));
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$output .= drupal_render($form);
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return $output;
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}
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/**
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* Menu callback used for AJAX calls
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*/
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function webfm_images_js(){
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global $user;
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//3 possible outcomes - the user is either an admin, user or prohibited
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if(($user->uid == 1) || user_access('administer webfm')) {
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// Admins have total access
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$webfm_perm = WEBFM_ADMIN;
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} else if(user_access('access webfm')) {
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$webfm_perm = WEBFM_USER;
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} else {
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//no feedback
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exit();
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}
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$webfm_root_path = webfm_get_root_path();
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if($webfm_root_path == NULL) {
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//WebFM root dir must exist
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webfm_json(array('status' => FALSE, 'err' => t('WebFM root not set')));
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exit();
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}
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$root_dir = ($webfm_perm == WEBFM_ADMIN)? file_directory_path() : file_directory_path().$webfm_root_path;
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$action = trim(strtolower(rawurldecode($_POST["action"])));
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if($action == 'get_menus') {
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$sizes = _webfm_images_get_sizes();
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$arraylen = count($sizes);
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for($i = 0; $i < $arraylen; $i++) {
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$menus[] = $sizes[$i]['label'];
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}
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webfm_json(array('status' => TRUE, 'data' => $menus));
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} else if (strpos($action, "resize to") === 0) {
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//first check if we should operate on this file (i.e. one that is in the database)
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$filepath = trim(rawurldecode($_POST["filepath"]));
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if($file = webfm_get_file_record('', $root_dir.$filepath)) {
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// Only admins, file owners or roles that can view this file can resize
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if($webfm_perm == WEBFM_ADMIN ||
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$user->uid == $file->uid ||
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webfm_file_view_access($file)) {
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$dir = dirname($file->fpath);
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$fname = strrev(substr(strrev($file->fpath), 0, strpos(strrev($file->fpath), '/')));
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//extract operation from action variable
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$variable = str_replace('resize to ', '', $action);
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$prefix = str_replace(' ', '_', $variable); //pepare the variable to be used as a file prefix
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$path = $dir .'/'. $prefix. '_'. $fname; //prepare a path+filename for the file we are going to create
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$sizes = _webfm_images_get_sizes();
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foreach($sizes as $key => $value) {
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if($value['label'] == $variable) {
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$height = $value['height'];
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$width = $value['width'];
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}
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}
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//as per moshe's patch but with added protection against sys error
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$original_size = @getimagesize ($dir .'/'. $filename);
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if(is_object($original_size)) {
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// scale to a fixed width
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if (!$height) {
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$height = ($width / $original_size[0]) * $original_size[1];
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}
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// scale to a fixed height
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if (!$width) {
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$width = ($height / $original_size[1]) * $original_size[0];
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}
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} else {
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if(empty($width))
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if(empty($height))
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//shouldn't happen after validation
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exit();
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else
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$width = $height;
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else if(empty($height))
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$height = $width;
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}
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//create our new file
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if(image_scale($file->fpath, $path, $width, $height)) {
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$err_arr = array();
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if($ret = webfm_insert_file($path, $err_arr)) {
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webfm_json(array('status' => TRUE, 'data' => 'resize success'));
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} else {
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webfm_json(array('status' => FALSE, 'data' => $err_arr));
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}
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} else {
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webfm_json(array('status' => FALSE, 'data' => 'resize failed to ' . $path));
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}
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} else {
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webfm_json(array('status' => FALSE, 'data' => 'insufficient params'));
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}
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} else {
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webfm_json(array('status' => FALSE, 'data' => 'file '.$filepath.' not found'));
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}
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} else {
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webfm_json(array('status' => FALSE, 'data' => 'unknown operation'));
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}
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exit();
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}
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function webfm_images_webfm_extend_js(){
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$modulepath = drupal_get_path('module', 'webfm_images');
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drupal_add_js($modulepath. '/webfm_images.js');
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}
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