scald_image.module in Scald: Media Management made easy 6

File

scald_image/scald_image.module

<?php

/**
 * @file
 * Scald Image is a Scald Atom Provider for images.
 */
require_once drupal_get_path('module', 'scald') . '/scald.constants.inc';

/*******************************************************************************
 * SCALD HOOK IMPLEMENTATIONS
 ******************************************************************************/

/**
 * Implementation of hook_scald_provider().
 */
function scald_image_scald_provider() {
  $provides = array(
    'atoms' => array(),
    'transcoders' => array(),
  );

  // Ensure that the non-bootstrap list of modules is used.  The hit to rebuild
  //  the list should be minimal because this function should be executing very
  //  rarely.
  module_list(TRUE, FALSE);

  // Conditionally declare possible Base Entities for Atom Provider
  if (module_exists('upload')) {
    if (!is_array($provides['atoms']['image'])) {
      $provides['atoms']['image'] = array();
    }
    $provides['atoms']['image'][] = t('Files attached to Nodes.');
  }
  if (module_exists('filefield')) {
    if (!is_array($provides['atoms']['image'])) {
      $provides['atoms']['image'] = array();
    }
    $provides['atoms']['image'][] = t('Filefield files from CCK Fields.');
  }
  if (module_exists('imagefield')) {
    if (!is_array($provides['atoms']['image'])) {
      $provides['atoms']['image'] = array();
    }
    $provides['atoms']['image'][] = t('Images from imagefield CCK Fields.');
  }

  // Conditionally Provide Imagecache-based Transcoders
  if (module_exists('imagecache')) {

    // Provide ability to filter available presets ?
    foreach (imagecache_presets() as $id => $preset) {
      $provides['transcoders']['imagecache-' . $preset['presetname']] = array(
        'title' => $preset['presetname'] . ' (ImageCache preset)',
        'description' => "Uses the ImageCache preset {$preset['presetname']} to prepare the image.",
        'formats' => array(
          'image' => 'passthrough',
          'audio' => 'passthrough',
          'video' => 'passthrough',
        ),
      );
    }
  }
  return $provides;
}

/**
 * Implementation of hook_scald_register_atom().
 */
function scald_image_scald_register_atom(&$atom, $values, $mode) {
}

/**
 * Implementation of hook_scald_update_atom().
 */
function scald_image_scald_update_atom(&$atom, $values, $mode) {
}

/**
 * Implementation of hook_scald_unregister_atom().
 */
function scald_image_scald_unregister_atom($atom, $mode) {
}

/**
 * Implementation of hook_scald_fetch().
 */
function hook_scald_fetch(&$atom, $mode) {
}

/**
 * Implementation of hook_scald_prerender().
 */
function scald_image_scald_prerender(&$atom, $context, $options, $mode) {
  if ($mode == 'transcoder' && !empty($atom->file_source)) {

    // Find out which transcoder to use. This seems unnecesarilly complex.
    $config = variable_get('scald_config', 0);
    $context_config = $config->contexts[$context]['type_format'][$atom->type];
    if (preg_match('/^imagecache-(.*)$/', $context_config['transcoder'], $match)) {
      $preset = imagecache_preset_by_name($match[1]);
      $dir = file_directory_path();
      $path = str_replace($dir, $dir . '/imagecache/' . $preset['presetname'], $atom->file_source);
      $atom->file_transcoded = $path;
      $atom->rendered->file_transcoded_url = url($path);
    }
  }
}

/**
 * Implementation of hook_scald_action()
 */
function scald_image_scald_action($atom, $action, $mode) {
}

Functions

Name	Description
hook_scald_fetch	Implementation of hook_scald_fetch().
scald_image_scald_action	Implementation of hook_scald_action()
scald_image_scald_prerender	Implementation of hook_scald_prerender().
scald_image_scald_provider	Implementation of hook_scald_provider().
scald_image_scald_register_atom	Implementation of hook_scald_register_atom().
scald_image_scald_unregister_atom	Implementation of hook_scald_unregister_atom().
scald_image_scald_update_atom	Implementation of hook_scald_update_atom().