dynamic_background_blog.module in Dynamic Background 7.2

This module provides the user blog's with the option to use different dynamic background images for each blog.

File

modules/dynamic_background_blog/dynamic_background_blog.module

<?php

/**
 * @file
 * This module provides the user blog's with the option to use different
 * dynamic background images for each blog.
 */
define('DYNAMIC_BACKGROUND_BLOG_PATH', 'blog');

/**
 * Implements hook_permission().
 */
function dynamic_background_blog_permission() {
  return array(
    'user selection of blog background' => array(
      'title' => t('Allow selection of background on user blog'),
    ),
  );
}

/**
 * Implements hook_menu().
 *
 * Hooks into the dynamic background modules menu
 * structure and adds the "blog" menu tab to the administration interface.
 */
function dynamic_background_blog_menu() {
  return array(
    'user/%user/blog/background' => array(
      'title' => 'My blog background',
      'page callback' => 'drupal_get_form',
      'page arguments' => array(
        'dynamic_background_blog_form',
        1,
      ),
      'access arguments' => array(
        'user selection of blog background',
      ),
      'type' => MENU_LOCAL_TASK,
    ),
  );
}

/**
 * Build the administration interface for dynamic background nodes and enables
 * administrators to select which content types have enable background selection.
 *
 * @return array $form
 */
function dynamic_background_blog_settings_form() {
  $form = array();

  // Add image style to the form.
  $form += dynamic_background_image_style_form('dynamic_background_blog_image_style');

  // Add image behavior form.
  $form += dynamic_background_image_behaviour_form('dynamic_background_blog_image_behaviour');
  return $form;
}

/**
 * Menu callback that generates the form used in the "My blog background" tab
 * on the user profile page.
 */
function dynamic_background_blog_form($form, $form_state, $user) {

  // Add the image selection part of the form.
  $form['dynamic_background'] = dynamic_background_image_selector_form('blog', $user->uid);

  // Allow user to upload a image.
  if (user_access('dynamic background upload blog')) {

    // Load settings and find the number of images.
    $settings = variable_get('dynamic_background_blog', array());
    $no_of_images = isset($settings['upload']['no_of_images']) ? $settings['upload']['no_of_images'] : 1;

    // Only proceed if the form is needed.
    if ($no_of_images > 0) {

      // Add user upload form.
      $upload_form = dynamic_background_user_upload_form('blog', $user->uid, $no_of_images);
      $form['dynamic_background'] += $upload_form['form'];

      // Add submission function.
      $form['#submit'][] = $upload_form['submit'];
      $form['#submit'][] = 'dynamic_background_blog_form_submit';
    }
  }

  // Add submit handler.
  $form['submit'] = array(
    '#type' => 'submit',
    '#value' => t('Update background'),
  );
  return $form;
}

/**
 * Submit handler for user background selection and saves the selected image's
 * id into the database.
 */
function dynamic_background_blog_form_submit($form, &$form_state) {

  // Check if any image have been selected.
  $fid = NULL;
  foreach ($form_state['values']['dynamic_background'] as $key => $value) {
    if (isset($value['selected']) && $value['selected']) {
      $fid = $key;
      break;
    }
  }
  if (isset($form_state['values']['dynamic_background']['dynamic_background_picture_upload'])) {
    foreach ($form_state['values']['dynamic_background']['dynamic_background_picture_upload'] as $key => $value) {
      if (isset($value['picture_use']) && $value['picture_use']) {
        $fid = $key;
        break;
      }
    }
  }

  // Get dynamic background info.
  $info = $form_state['values']['dynamic_background']['dynamic_background_info'];

  // Update the active background image.
  dynamic_background_set_active($fid, 'blog', $info['data']);
}

/**
 * Implements hook_dynamic_background_css().
 */
function dynamic_background_blog_dynamic_background_css($vars) {
  $uid = NULL;

  // There are two ways to detecte the different parts of a blog. The path
  // /blog/%uid_optional of the node type blog. First we look at the node type,
  // then the path.
  if (isset($vars['node']) && $vars['node']->type == 'blog') {
    $uid = $vars['node']->uid;
  }
  else {

    // Try to find the uid by using path.
    $parts = explode('/', drupal_get_path_alias());
    if (count($parts) >= 2 && $parts[0] == DYNAMIC_BACKGROUND_BLOG_PATH && is_numeric($parts[1])) {

      // Test that the 2nd part is an int (might be a user id).
      $uid = (int) $parts[1];
    }
  }

  // If user id was found, try to load blog background image if one is definded.
  if (!is_null($uid)) {
    $image = dynamic_background_active_image('blog', $uid);

    // If no image have been found try to select random image (if configured).
    $image_behaviour = variable_get('dynamic_background_blog_image_behaviour', array());
    if (!$image && (isset($image_behaviour['random']) && $image_behaviour['random'])) {
      $image = dynamic_background_random_image('blog', $uid);
    }
    if ($image) {

      // Load image style settings.
      $image_style = variable_get('dynamic_background_blog_image_style', FALSE);
      return array(
        'image' => $image,
        'configuration' => variable_get('dynamic_background_blog_css', array()),
        'image_style' => $image_style ? $image_style['style'] : FALSE,
        'weight' => 230,
      );
    }
  }
}

/**
 * Implements hook_dynamic_background_info().
 */
function dynamic_background_blog_dynamic_background_info() {
  return array(
    'type' => 'blog',
    'menu' => array(
      'title' => t('Blog'),
      'description' => t('Configure blog extension'),
    ),
    'upload' => TRUE,
  );
}

/**
 * Implements hook_dynamic_background_weight().
 */
function dynamic_background_blog_dynamic_background_weight() {
  return array(
    'weight' => -35,
  );
}

Functions

Name	Description
dynamic_background_blog_dynamic_background_css	Implements hook_dynamic_background_css().
dynamic_background_blog_dynamic_background_info	Implements hook_dynamic_background_info().
dynamic_background_blog_dynamic_background_weight	Implements hook_dynamic_background_weight().
dynamic_background_blog_form	Menu callback that generates the form used in the "My blog background" tab on the user profile page.
dynamic_background_blog_form_submit	Submit handler for user background selection and saves the selected image's id into the database.
dynamic_background_blog_menu	Implements hook_menu().
dynamic_background_blog_permission	Implements hook_permission().
dynamic_background_blog_settings_form	Build the administration interface for dynamic background nodes and enables administrators to select which content types have enable background selection.

Constants

Name	Description
DYNAMIC_BACKGROUND_BLOG_PATH	@file This module provides the user blog's with the option to use different dynamic background images for each blog.