kpicasa.module

<?php
function kpicasa_init(){
  drupal_add_css(drupal_get_path('module', 'kpicasa') .'/kpicasa.css');
}

function kpicasa_menu() {
  $items = array();

  $items['admin/settings/kpicasa'] = array(
    'title' => 'kPicasa settings',
    'description' => 'Settings of the kPicasa module',
    'page callback' => 'drupal_get_form',
    'page arguments' => array('kpicasa_admin_settings'),
    'access arguments' => array('administer site configuration'),
    'type' => MENU_NORMAL_ITEM,
  );
	
  return $items;
}

function kpicasa_admin_settings() {
	$form = array();
	
	$settings = _kpicasa_get_settings();
	
  $form['kpicasa_general_settings'] = array(
    '#type' => 'fieldset',
    '#title' => t('General settings'),
    '#tree' => TRUE,
  );
  
  $form['kpicasa_general_settings']['username'] = array(
    '#type' => 'textfield',
    '#title' => t('Picasa Web Albums Username'),
   	'#default_value' => $settings['kpicasa_general_settings']['username'], 
	);
	
  $form['kpicasa_album_list'] = array(
    '#type' => 'fieldset',
    '#title' => t('Album list'),
    '#tree' => TRUE,
  );
  
  $form['kpicasa_album_list']['extra'] = array(
    '#type' => 'checkboxes',
    '#title' => t('Show extra information'),
    '#options' => array(
      'summary' => t('Summary'),
      'location' => t('Location'),
      'published_date' => t('Published date'),
      'number_of_pictures' => t('Number of pictures'),
      ),  
    '#default_value' => $settings['kpicasa_album_list']['extra'],
  );
  
  $form['picture_list'] = array(
    '#type' => 'fieldset',
    '#title' => t('Picture list'),
    '#tree' => TRUE,
  );
  
  return system_settings_form($form);
}

function _kpicasa_get_settings() {
	$settings['kpicasa_general_settings'] = variable_get('kpicasa_general_settings', array('username' => ''));
	$settings['kpicasa_album_list'] = variable_get('kpicasa_album_list', array('extra' => array(
	                                                                                         'summary' => 0,
                                                                                           'location' => 0,
                                                                                           'publised_date' => 0,
                                                                                           'number_of_pictures' => 0,
	)));
	
	return $settings;
}

function kpicasa_filter($op, $delta = 0, $format = -1, $text = '', $cache_id = 0) {
  switch ($op) {
    case 'list':
      return array(0 => t('Picasa'));

    case 'description':
      return t('Allows users to integrate Picasa albums.');

    case 'prepare':
      // Note: we use the bytes 0xFE and 0xFF to replace < > during the
      // filtering process. These bytes are not valid in UTF-8 data and thus
      // least likely to cause problems.
      $text = preg_replace('@<code>(.+?)</code>@se', "'\xFEcode\xFF'. codefilter_escape('\\1') .'\xFE/code\xFF'", $text);
      $text = preg_replace('@<(\?(php)?|%)(.+?)(\?|%)>@se', "'\xFEphp\xFF'. codefilter_escape('\\3') .'\xFE/php\xFF'", $text);
      return $text;

    case 'process':
      $picasas = _kpicasa_prepare($text);   //returns an array of $tables[0] = table macro $table[1]= table html
      if ($picasas) {                    // there are table macros in this node
        return str_replace($picasas[0], $picasas[1], $text);
      }
      else {
        return $text;
      }

    case 'prepare':
      return $text;

    case 'no cache':
      return TRUE; 
      
   default:
      return $text;
  }
}

function _kpicasa_prepare($intext) {
  $out = FALSE;
  $matches = array();
  preg_match_all('/\[picasa([^\[\]]+ )* \] /x', $intext, $matches);
  $i = 0;

  while (isset($matches[1][$i])) {
    $out[0][$i] = $matches[0][$i];    
    //$map = array('#settings' => gmap_parse_macro($matches[1][$i], $ver));
    //$out[1][$i] = theme('gmap', $map);
    //drupal_set_message('settings: '.$matches[1][$i]);
    $out[1][$i] = _kpicasa_show_albums($matches[1][$i]);
    $i++;
  } // endwhile process macro
  return $out;
}

function _kpicasa_show_albums($options_string){
	// Get the settings
	$settings = _kpicasa_get_settings();
	
	// Convert options string to array.
	$options = array();
	if ($options_string) {
		if (substr($options_string,0,1) == '|') {
			$options_string = substr($options_string, 1);
		}
		
		if ($options_string) {
			$options = explode('|', $options_string);
		}
		
	}
	
	$username = '';
	if ($options[0]) {
		$username = $options[0];
	}
	else {
		$username = $settings['kpicasa_general_settings']['username'];
	}
	
	// Check if an album contants has to be schown.
	if (isset($_GET['album'])) {
		if (!is_array($_GET['album'])) {
		  if (strpos($_GET['album'], '/')) {
		  	$album_parts = explode('/', $_GET['album']);
		  	if (count($album_parts) == 2 && $album_parts[0] == $username) {
		  		return _kpicasa_show_album($username, $album_parts[1]);
		  	}
		  }
		}
		else {
      foreach ($_GET['album'] as $album) {
        $album_parts = explode('/', $_GET['album']);
        if (count($album_parts) == 2 && $album_parts[0] == $username) {
          return _kpicasa_show_album($username, $album_parts[1]);
        }      	
      }
		}
	}
	
  // Get the XML.  
  $url  = 'http://picasaweb.google.com/data/feed/api/user/' . urlencode($username) . '?kind=album';
  $data = @file_get_contents( $url );
  if (!$data) {
    drupal_set_message(t('Unable to get Picasa album for this user %username', array('%username' => $username)), 'error');
    return '';
  }
  $data = str_replace('gphoto:', 'gphoto_', $data);
  $data = str_replace('media:', 'media_', $data);
  $xml = @simplexml_load_string($data);
  if ( $xml === false ) {
  	drupal_set_message(t('Invalid XML received from Picasa'), 'error');
  	return '';
  }

  // Prepare some variables.
  /* TODO paging stuff
  $page = isset($_GET['kpgp']) && intval($_GET['kpgp']) > 1 ? intval($_GET['kpgp']) : 1; // kpgp = kPicasa Gallery Page

      $url = get_permalink();
      if ( $page > 1 )
      {
        $url = add_query_arg('kpgp', $page, $url);
      }

      if ( $this->config['albumPerPage'] > 0 )
      {
        $start = ($page - 1) * $this->config['albumPerPage'];
        $stop  = $start + $this->config['albumPerPage'] - 1;
      }
      else
      {
        $start = 0;
        $stop  = count( $xml->entry ) - 1;
      }
*/

  // Set the class, depending on how many albums per row
  //$class = $this->config['albumPerRow'] == 1 ? 'kpg-thumb-onePerRow' : 'kpg-thumb-multiplePerRow';
  $class = 'kpg-thumb-multiplePerRow';

  // Loop through the albums.
  $output = '<div class="kpg-album-list">';
  $i = 0; $j = 0;
  foreach( $xml->entry as $album ) {
  	$output .= '<div class="kpg-album">';
    $name      = (string) $album->gphoto_name;
    $title     = htmlspecialchars( (string) $album->title );
    $nbPhotos  = (string) $album->gphoto_numphotos;
    $albumURL  = drupal_get_path_alias(request_uri());
    $albumURL .= (strpos($albumURL, '?') ? '&' : '?') . 'album='.$username.'/'.$name;
    $thumbURL  = (string) $album->media_group->media_thumbnail['url'];
    $thumbW    = (string) $album->media_group->media_thumbnail['width'];
    $thumbH    = (string) $album->media_group->media_thumbnail['height'];

    $output .= "<a href='$albumURL'><img src='$thumbURL' height='$thumbH' width='$thumbW' alt='".str_replace("'", "&#39;", $title)."' class='kpg-thumb $class' /></a>";
    $output .= '<div class="kpg-title"><a href="'.$albumURL.'">'.$title.($settings['kpicasa_album_list']['extra']['number_of_pictures'] ? ' ('.$nbPhotos.')' : '').'</a></div>';

    if ($settings['kpicasa_album_list']['extra']['summary']) {
      $summary   = htmlspecialchars( (string) $album->summary );
      $output .= "<div class='kpg-summary'>$summary</div>";
    }
    
    if ($settings['kpicasa_album_list']['extra']['location']) {
	    $location  = htmlspecialchars( (string) $album->gphoto_location );
	    $output .= "<div class='kpg-location'>$location</div>";
    }
	  
    if ($settings['kpicasa_album_list']['extra']['published_date']) {
      $published = htmlspecialchars( date('Y-m-d', strtotime( $album->published ))); // that way it keeps the timezone
    	$output .= "<div class='kpg-published'>$published</div>";
    }

    /*
          if ( $this->config['albumSummary'] == true && strlen($summary) )
          {
            print "<div class='kpg-summary'>$summary</div>";
          }
          if ( $this->config['albumLocation'] == true && strlen($location) )
          {
            print "<div class='kpg-location'>$location</div>";
          }
          if ( $this->config['albumPublished'] == true )
          {
            print "<div class='kpg-published'>$published</div>";
          }
          if ( $this->config['albumNbPhoto'] == 1 )
          {
            print '<div class="kpg-nbPhotos">'.sprintf(__ngettext('%d photo', '%d photos', $nbPhotos, 'kpicasa_gallery'), $nbPhotos).'</div>';
          }
          */
    $j++;
    $i++;
    $output .= '</div>'; // End div class="kpg-album".
  }
  $output .= '</div>'; // End div class="kpg-album-list".
  return $output;
}

function _kpicasa_show_album($username, $album) {
  //----------------------------------------
  // Get the XML
  //----------------------------------------
  $url = 'http://picasaweb.google.com/data/feed/api/user/'.urlencode($username).'/album/'.urlencode($album).'?kind=photo';
  /*
  if ( strlen($authKey) > 0 ) {
    $url .= '&authkey='.$authKey;
  }
  */

  $data = @file_get_contents( $url );
  if (!$data) {
    drupal_set_message(t('Unable to get Picasa album for this user %username', array('%username' => $username)), 'error');
    return '';
  }        
  $data = str_replace('gphoto:', 'gphoto_', $data);
  $data = str_replace('media:', 'media_', $data);
        
  $xml = @simplexml_load_string($data);
  if ( $xml === false ) {
    drupal_set_message(t('Unable to get Picasa album for this user %username', array('%username' => $username)), 'error');
    return '';
  }

  
  //----------------------------------------
  // TODO Display "back" link
  //----------------------------------------
  /*
  if ( !$direct ) {
    $backURL = remove_query_arg('album');
    $backURL = remove_query_arg('kpap', $backURL);
    print "<div id='kpg-backLink'><a href='$backURL'>&laquo; ".__('Back to album list', 'kpicasa_gallery').'</a></div>';
  }
  */

  //----------------------------------------
  // Display album information
  //----------------------------------------
  $albumTitle     = htmlspecialchars( (string) $xml->title );
  $albumSummary   = htmlspecialchars( (string) $xml->subtitle );
  $albumLocation  = htmlspecialchars( (string) $xml->gphoto_location );
  //$albumPublished = wp_specialchars( date($this->config['dateFormat'], strtotime( $xml->published ))); // that way it keeps the timezone
  $albumNbPhotos  = (string) $xml->gphoto_numphotos;
  $albumSlideshow = (string) $xml->link[2]['href'];

  $output = '';
  $output .= '<div id="kpg-album-description">';
  $output .= "<div id='kpg-title'>$albumTitle</div>";

  $output .= "<div id='kpg-summary'>$albumSummary</div>";
  $output .= "<div id='kpg-location'>$albumLocation</div>";
  //$output .= "<div id='kpg-published'>$albumPublished</div>";
  $output .= '<div id="kpg-nbPhotos">'.$albumNbPhotos.'</div>';
  //$output .= "<div id='kpg-slideshow'><a href='$albumSlideshow'>".__('Slideshow', 'kpicasa_gallery')."</a></div>";

  $output .= '</div>';
  $thumbIndex = 1;

  //----------------------------------------
  // Loop through the pictures
  //----------------------------------------
  $output .= '<div class="kpg-pictures">';
  $i = 0; $j = 0;
  foreach( $xml->entry as $photo ) {
    $isVideo = (string) $photo->media_group->media_content[1]['medium'] == 'video' ? true : false;
        
    $summary  = htmlspecialchars((string) $photo->summary );
    $thumbURL = (string) $photo->media_group->media_thumbnail[$thumbIndex]['url'];
    $thumbW   = (string) $photo->media_group->media_thumbnail[$thumbIndex]['width'];
    $thumbH   = (string) $photo->media_group->media_thumbnail[$thumbIndex]['height'];

    if ( $isVideo == true ) {
    	$output .= '<div class="kpg-item kpg-video">';
      $output .= 'video not yet supported';
      $output .= '</div>';
    }
    else {
    	//$fullURL = (string) $photo->link[1]['href'];
      $fullURL = (string) $photo->media_group->media_thumbnail[1]['url'];
      $fullURL = str_replace('/s144/', '/s800/', $fullURL);
    	
      $output .= '<div class="kpg-item kpg-picture">';
      $output .= "<a href='$fullURL' rel='lightbox'><img src='$thumbURL' height='$thumbH' width='$thumbW' alt='' class='kpg-thumb' /></a>";
      $output .= '</div>';
    }
  }
  $output .= '</div>';
  $output .= '<div style="clear: both;" />';

  return $output;
}