~ubuntu-drupal-devs/ubuntu-drupal-header/6.x

<?php
// $Id$

/*
 * @file
 * Drupal Module: Ubuntu Drupal Header
 * Ubuntu Drupal Header displays a customizable block to be used
 * as a header. It cad be set to display specific headers for
 * different node types.
 */

/**
 * Implementation of hook_perm - Defines user permissions.
 * The suggested naming convention for permissions is "action_verb modulename".
 *
 * @return An array of permissions strings.
 *
 * @ingroup base
 */

function udheader_perm() {
  return array('administer udheader', 'view udheader');
}

/**
 * Implementation of hook_help - Provides online user help.
 *
 * @param $path A Drupal menu router path the help is being requested for
 * @param $arg
 * @return A localized string containing the help text.
 *
 * @ingroup base
 */

function udheader_help($path, $arg) {
  switch ($path) {
    case 'admin/help#udheader':
      $output = '';

      return $output;
  }
}

function udheader_menu() {

  $items = array();

  $items['admin/settings/udheader'] = array(
    'title' => 'UD Header Settings',
    'description' => 'Set the various options for the Ubuntu Drupal Header module.',
    'weight' => '0',
    'page callback' => 'udheader_admin_settings',
    'access arguments' => array('access administration pages'),
    'type' => MENU_NORMAL_ITEM,
   );

  $items['admin/settings/udheader/settings'] = array(
    'title' => 'Settings',
    'description' => 'Set the various options for the Ubuntu Drupal Header module.',
    'weight' => '0',
    'page callback' => 'udheader_admin_settings',
    'access arguments' => array('access administration pages'),
    'type' => MENU_DEFAULT_LOCAL_TASK,
   );
  
  return $items;
}

function udheader_admin_settings() {
  $tid = intval(arg(3)); // @deprecated arg()
  if ($tid > 0) {
    $edit = db_fetch_array(db_query('SELECT * FROM {udheader} WHERE tid = %d', $tid));
    $output .= drupal_get_form('udheader_linkform', $edit, true);
  }
  else {
    $output .= drupal_get_form('udheader_linkform', $edit, false);
    $output .= '<h2>Header Maps</h2>';
    $output .= udheader_view_list();
  }
  return $output;
}

/**
 * Build form to add/edit location links
 */

function udheader_linkform(&$form_state, $edit = array(), $individual = false) {

  // Get available node types
  $node_types = node_get_types('names');
  $node_types['udheader_default'] .= 'Default';

  // Get left images
  $dir =  drupal_get_path('module', 'udheader') . "/images/left/";
  $handle = opendir($dir);
  while (false !== ($file = readdir($handle))) {
    if ($file != '.' && $file != '..') {
      $images['left'][$file] = $file;
    }
  }
  closedir($handle);

  // Get center images
  $dir =  drupal_get_path('module', 'udheader') . "/images/center/";
  $handle = opendir($dir);
  while (false !== ($file = readdir($handle))) {
    if ($file != '.' && $file != '..') {
      $images['center'][$file] = $file;
    }
  }
  closedir($handle);

  // Get right images
  $dir =  drupal_get_path('module', 'udheader') . "/images/right/";
  $handle = opendir($dir);
  while (false !== ($file = readdir($handle))) {
    if ($file != '.' && $file != '..') {
      $images['right'][$file] = $file;
    }
  }
  closedir($handle);

  $form = array();
  
  $c = $edit['tid'] > 0 ? FALSE : TRUE;
  $t = $edit['tid'] > 0 ? 'Edit' : 'Add';
  $form['udheader'] = array(
    '#type' => 'fieldset',
    '#title' => t($t . ' Header'),
    '#collapsible' => $c,
    '#collapsed' => $c,
    '#tree' => FALSE,
  );
  $form['udheader']['tid'] = array(
    '#type' => 'hidden',
    '#value' => $edit['tid']
  );
  $form['udheader']['node'] = array(
    '#type' => 'select',
    '#title' => t('Node Type'),
    '#options' => $node_types,
    '#default_value' => $edit['node'],
    '#description' => t('Select the node type which the header will be applied for.'),
  );
  $form['udheader']['left'] = array(
    '#type' => 'select',
    '#title' => t('Left Image'),
    '#options' => $images['left'],
    '#default_value' => $edit['leftimg'],
    '#description' => t('Select the image to be used on the left side of the header.'),
  );
  $form['udheader']['center'] = array(
    '#type' => 'select',
    '#title' => t('Center Image'),
    '#options' => $images['center'],
    '#default_value' => $edit['centerimg'],
    '#description' => t('Select the image to be used in the center of the header.'),
  );
  $form['udheader']['centertext'] = array(
    '#type' => 'textarea',
    '#title' => t('Text to be displayed in the center of the masthead'),
    '#default_value' => $edit['centertext'],
  );
  $form['udheader']['right'] = array(
    '#type' => 'select',
    '#title' => t('Right Image'),
    '#options' => $images['right'],
    '#default_value' => $edit['rightimg'],
    '#description' => t('Select the image to be used on the right side of the header.'),
  );
  $form['udheader']['righttext'] = array(
    '#type' => 'textarea',
    '#title' => t('Text to be displayed in the right part of the masthead'),
    '#default_value' => $edit['righttext'],
  );
  $form['udheader']['submit'] = array(
    '#type' => 'submit',
    '#value' => $edit['tid'] > 0 ? 'Update' : 'Add'
  );

  if ($individual) {
    $form['udheader']['delete'] = array(
      '#type' => 'submit',
      '#value' => 'Delete',
    );
  }
  
  return $form;
}

/**
 * Build list of existing linked locations
 */

function udheader_view_list() {
  $imgmaps = db_query('SELECT * FROM {udheader}');
  $rows = array();
  $headers = array('Node Type', 'Left Image', 'Center Image', 'Right Image', 'Edit');
  
  while ($imgmap = db_fetch_object($imgmaps)) {
    $tid = strval($imgmap->tid);
    array_push($rows, array(
      $imgmap->node,
      $imgmap->leftimg,
      $imgmap->centerimg,
      $imgmap->rightimg,
      l('edit', 'admin/settings/udheader/'. $tid),
    )
    );
  }
  return theme('table', $headers, $rows);                                                                                                                                                       
}

/**
 * Add/Delete/Update location link to database
 */

function udheader_linkform_submit($form, &$form_state) {
  
  $form_state['redirect'] = 'admin/settings/udheader';
  
  $op  = $form_state['clicked_button']['#post']['op'];
  $tid = $form_state['clicked_button']['#post']['tid'];
  $node = $form_state['clicked_button']['#post']['node'];
  $left = $form_state['clicked_button']['#post']['left'];
  $center = $form_state['clicked_button']['#post']['center'];
  $centertext = $form_state['clicked_button']['#post']['centertext'];
  $right = $form_state['clicked_button']['#post']['right'];
  $righttext = $form_state['clicked_button']['#post']['righttext'];

  // Update
  if ($op == 'Update') {
    $rslt = db_query('UPDATE {udheader} SET node="%s", leftimg="%s", centerimg="%s", centertext="%s", rightimg="%s", righttext="%s" WHERE tid=%d', $node, $left, $center, $centertext, $right, $righttext, $tid);
  }

  // Delete
  if ($op == 'Delete') {
    $rslt = db_query('DELETE FROM {udheader} WHERE tid=%d', $tid);
  }

  // Add
  if ($op == 'Add') {
    $rslt = db_query('INSERT INTO {udheader} (node, leftimg, centerimg, centertext, rightimg, righttext) VALUES ("%s", "%s", "%s", "%s", "%s", "%s")', $node, $left, $center, $centertext, $right, $righttext);
  }

  // Check Result
  if ('1' == $rslt) {
    drupal_set_message('Record modification made.');
    return TRUE;
  } else {
    trigger_error('Record modification failed.');
    return FALSE;
  }
}

/**
 * Implementation of hook_block
 * @param string $op one of "list", "view", "save" and "configure"
 * @param integer $delta code to identify the block
 * @param array $edit only for "save" operation
 **/

function udheader_block($op = 'list', $delta = 0, $edit = array()) {
  $block = array();

  if ($op == "list") {
    $block[0]["info"] = t('Ubuntu Drupal Header');
  } elseif ($op == 'view') {
    $block['subject'] = null;
    $block['content'] = udheader_build_block();
  }
  return $block;
}

/**
 * Build header content
 */
function udheader_build_block() {
  drupal_add_css(drupal_get_path('module', 'udheader') .'/udheader-style.css');

  $node = node_load(arg(1));
  if ($node->type) {
    $rslt = db_fetch_array(db_query('SELECT leftimg, centerimg, centertext, rightimg, righttext FROM {udheader} WHERE node = "%s" LIMIT 1', $node->type));
    if (!$rslt) {
      $rslt = db_fetch_array(db_query('SELECT leftimg, centerimg, centertext, rightimg, righttext FROM {udheader} WHERE node = "%s" LIMIT 1', 'udheader_default'));
    }
  } else {
    $rslt = db_fetch_array(db_query('SELECT leftimg, centerimg, centertext, rightimg, righttext FROM {udheader} WHERE node = "%s" LIMIT 1', 'udheader_default'));
  }
  $image['left'] = base_path() . drupal_get_path('module', 'udheader') . "/images/left/" . $rslt['leftimg'];
  $image['center'] = base_path() . drupal_get_path('module', 'udheader') . "/images/center/" . $rslt['centerimg'];
  $image['right'] = base_path() . drupal_get_path('module', 'udheader') . "/images/right/" . $rslt['rightimg'];

  $h1 = udheader_block_height($rslt['centerimg'], 1);
  $h2 = udheader_block_height($rslt['centerimg'], 10, 'sub');

  $header  = '<div id="udheader-block" style="height: ' . $h1 . ';">';
  $header .= '  <div id="udheader-left">';
  $header .= '    <img src="' . $image['left'] . '" />';
  $header .= '  </div>';
  $header .= '  <div id="udheader-right" style="background-image: url(' . $image['right'] . ');">';
  $header .= '    <span id="udheader-righttext" style="height: ' . $h2 . ';">' . $rslt['righttext']. '</span>';
  $header .= '  </div>';
  $header .= '  <div id="udheader-center" style="background-image: url(' . $image['center'] . ');">';
  $header .= '    <span id="udheader-centertext" style="height: ' . $h2 . ';">' . $rslt['centertext']. '</span>';
  $header .= '  </div>';
  $header .= '</div>';

  return $header;
}

/**
 * Find height based on center image selection
 */

function udheader_block_height($img, $val = '0', $oper = 'add') {
  // Masthead height will be based on the center content
  $center = array(
    'center.png' => '97',
    'center-tall.png' => '173',
  );
  
  switch ($oper) {
     case 'add':
       $calc = ( $center[$img] + $val );
       break;
     case 'sub':
       $calc = ( $center[$img] - $val );
       break;
   }
  
  $height = $calc . 'px';
  
  return $height;
}