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<?php
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// $Id$
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/**
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* Display help and module information
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* @param section which section of the site we're displaying help
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* @return help text for section
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*/
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function avatar_selection_help($section='') {
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$output = '';
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switch ($section) {
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case "admin/help#avatar_selection":
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$output .= '<p>'. t("Allows the user to pick an avatar from a list."). '</p>';
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return $output;
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case "admin/modules#description":
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return t("Allows the user to pick an avatar from a list.");
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case "admin/settings/avatar_selection/images":
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return t("Upload images to display as a user avatar. These images can be anything you like, but it is recommended that you maintain a uniform icon size for all of your avatars. Maximum dimensions are 85x85 and the maximum size is 30 kB");
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}
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}
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/**
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* Implementation of hook_perm().
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* Define the permissions this module uses
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*/
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function avatar_selection_perm() {
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return array('administer avatar selection');
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}
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/**
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* Implementation of hook_access().
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*/
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function avatar_selection_access($op, $node) {
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}
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/**
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* Implementation of hook_menu().
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*/
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function avatar_selection_menu($may_cache) {
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$access = user_access('administer avatar selection');
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$items = array();
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if ($may_cache) {
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$items[] = array('path' => 'admin/settings/avatar_selection',
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'title' => t('Avatar Selection'),
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'callback' => 'avatar_selection_settings_page',
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'access' => $access,
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'description' => t('Allows the user to pick an avatar from a list.'),
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);
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}
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else {
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$items[] = array(
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'path' => 'admin/settings/avatar_selection',
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'title' => t('Avatar Selection'),
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'description' => t('Allows the user to pick an avatar from a list.'),
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'callback' => 'drupal_get_form',
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'callback arguments' => array('avatar_selection_images_form'),
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'access' => $access,
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);
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$items[] = array(
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'path' => 'admin/settings/avatar_selection/images',
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'title' => t('Images'),
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'callback' => 'drupal_get_form',
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'callback arguments' => array('avatar_selection_images_form'),
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'access' => $access,
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'type' => MENU_LOCAL_TASK,
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);
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}
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return $items;
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}
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/**
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* Implementation of hook_form_alter().
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*/
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function avatar_selection_form_alter($form_id, &$form) {
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if ('user_edit' == $form_id && is_array($form['picture'])) {
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drupal_add_css(drupal_get_path('module', 'avatar_selection') .'/avatar_selection.css');
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if (variable_get('user_pictures', 0)) {
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$selects = _avatar_selection_image_list();
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if (count($selects)) {
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$user_form = drupal_retrieve_form($form_id);
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$form['picture']['select_avatar'] = array(
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'#type' => 'radios',
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'#title' => t('Or simply select an icon'),
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'#options' => $selects,
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'#default_value' => $user_form['_account']['#value']->picture,
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);
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$form['picture']['select_avatar']['#attributes']['class'] = "user_avatar_select";
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}
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}
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$path = '/'.addcslashes(file_create_path('avatar_selection'), '/').'/';
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if ($form['picture']['current_picture']['#value']
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&& preg_match($path, $form['picture']['current_picture']['#value'])) {
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unset($form['picture']['picture_delete']);
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}
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}
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return $form;
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}
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/*
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* Implementation of hook_user().
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*/
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function avatar_selection_user($op, &$edit, &$user, $category = 'account') {
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global $form_values;
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switch ($op) {
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case 'validate':
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$file = file_check_upload('picture_upload');
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if (!$file && $edit['select_avatar']) {
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$form_values['picture'] = $edit['select_avatar'];
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}
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break;
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}
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}
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function _avatar_selection_image_list() {
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$selects = array();
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$dir = file_create_path('avatar_selection').'/';
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$listings = file_scan_directory($dir, '.*\.(gif|jpg|jpeg|png)', array('.', '..', 'CVS'), 0, FALSE);
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foreach ($listings as $listing) {
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$selects[$dir.$listing->basename] = theme('image', $dir.$listing->basename, $listing->basename, $listing->basename);
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}
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return $selects;
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}
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function avatar_selection_settings_page($op = NULL, $aid = NULL) {
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switch ($op) {
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case 'edit':
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if (is_numeric($aid)) {
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$output = drupal_get_form('avatar_selection_images_form', $aid);
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}
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break;
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case 'delete' :
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if (is_numeric($aid)) {
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$output = avatar_selection_delete($aid);
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}
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break;
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default:
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$form[] = array(
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'#type' => 'fieldset',
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'#title' => t('Add another'),
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);
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$output .= drupal_get_form('avatar_selection_images_form');
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break;
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}
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return $output;
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}
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/**
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* Define a form to upload the avatar images.
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*/
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function avatar_selection_images_form() {
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$form['new']['picture_upload'] = array('#type' => 'file',
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'#title' => t('Upload image'),
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'#size' => 48,
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'#description' => t('A new avatar image. Maximum dimensions are %dimensions and the maximum size is %size kB.', array('%dimensions' => variable_get('user_picture_dimensions', '85x85'), '%size' => variable_get('user_picture_file_size', '30'))) .' '. variable_get('user_picture_guidelines', ''),
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);
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$form['new']['attach'] = array(
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'#type' => 'submit',
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'#value' => t('Upload'),
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);
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$form['#attributes']['enctype'] = 'multipart/form-data';
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$selects = _avatar_selection_image_list();
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if (count($selects)) {
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$form['images'] = array('#tree' => TRUE);
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foreach ($selects as $imagepath => $imageimg) {
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$form['images'][$imagepath] = array(
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'#type' => 'checkbox',
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'#title' => $imageimg,
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'#return_value' => 1,
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'#default_value' => FALSE,
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'#description' => check_plain($imagepath),
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);
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}
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$form['delete_image'] = array(
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'#type' => 'submit',
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'#value' => t('Delete'),
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);
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}
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return $form;
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}
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/**
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* Validate the submission.
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*
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* Check whether:
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* Delete has been chosen AND a checkbox has been selected
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* OR
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* Upload has been chosen AND the file upload form is not empty.
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*/
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function avatar_selection_images_form_validate($form_id, $form_values) {
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if ($form_values['op'] == t('Upload')) {
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if (!$file = file_check_upload('picture_upload')) {
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form_set_error('picture_upload', t('Please enter the filename of an image to upload.'));
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}
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else {
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avatar_selection_validate_picture($file);
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}
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}
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else if ($form_values['op'] == t('Delete')) {
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if (count(array_filter($form_values['images'])) == 0) {
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form_set_error('images', t('Please select images to delete.'));
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}
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}
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}
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function avatar_selection_validate_picture($file) {
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global $form_values;
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// Check that uploaded file is an image, with a maximum file size
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// and maximum height/width.
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$info = image_get_info($file->filepath);
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list($maxwidth, $maxheight) = explode('x', variable_get('user_picture_dimensions', '85x85'));
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if (!$info || !$info['extension']) {
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form_set_error('picture_upload', t('The uploaded file was not an image.'));
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}
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else if (image_get_toolkit()) {
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image_scale($file->filepath, $file->filepath, $maxwidth, $maxheight);
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}
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else if (filesize($file->filepath) > (variable_get('user_picture_file_size', '30') * 1000)) {
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form_set_error('picture_upload', t('The uploaded image is too large; the maximum file size is %size kB.', array('%size' => variable_get('user_picture_file_size', '30'))));
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}
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else if ($info['width'] > $maxwidth || $info['height'] > $maxheight) {
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form_set_error('picture_upload', t('The uploaded image is too large; the maximum dimensions are %dimensions pixels.', array('%dimensions' => variable_get('user_picture_dimensions', '85x85'))));
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}
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}
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function avatar_selection_images_form_submit($form_id, $form_values) {
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$op = $form_values['op'];
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// Save uploaded files
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if ($op == t('Upload')) {
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$dir = file_create_path('avatar_selection');
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$is_writable = file_check_directory($dir, 1);
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if ($is_writable) {
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if ($source = file_check_upload('picture_upload')) {
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if ($file = file_save_upload($source, $dir)) {
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if (image_get_info($file->filepath)) {
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drupal_set_message(t('New image saved.'));
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}
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else {
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file_delete($file->filepath);
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drupal_set_message('Uploaded file does not appear to be a valid image file. Please try again.');
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}
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}
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}
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}
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else {
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form_set_error('picture_upload', t('Directory not writable: '. $dir));
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}
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}
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else if ($op == t('Delete')) {
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foreach ($form_values['images'] as $path => $is_removed) {
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if ($is_removed) {
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$to_delete[] = $path;
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}
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}
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if (is_array($to_delete)) {
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avatar_selection_image_delete($to_delete);
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}
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}
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}
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function avatar_selection_image_delete($to_delete) {
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foreach ($to_delete as $path) {
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if (file_check_location($path, file_create_path('avatar_selection'))) {
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file_delete($path);
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if (!image_get_info($path)) {
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drupal_set_message(t('Image deleted.'));
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}
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}
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}
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}
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