image.devel_generate.inc in Devel 7

File

devel_generate/image.devel_generate.inc

<?php

define('DEVEL_GENERATE_IMAGE_MAX', 5);
function image_devel_generate($object, $field, $instance, $bundle) {
  if (function_exists('imagejpeg')) {
    $devel_generate_image_function = variable_get('devel_generate_image_function', '_image_devel_generate');
    if (!function_exists($devel_generate_image_function)) {
      $devel_generate_image_function = '_image_devel_generate';
    }
    if (field_behaviors_widget('multiple values', $instance) == FIELD_BEHAVIOR_CUSTOM) {
      return devel_generate_multiple($devel_generate_image_function, $object, $field, $instance, $bundle);
    }
    else {
      return $devel_generate_image_function($object, $field, $instance, $bundle);
    }
  }
}
function _image_devel_generate($object, $field, $instance, $bundle) {
  $object_field = array();
  static $images = array();
  $min_resolution = empty($instance['settings']['min_resolution']) ? '100x100' : $instance['settings']['min_resolution'];
  $max_resolution = empty($instance['settings']['max_resolution']) ? '600x600' : $instance['settings']['max_resolution'];
  $extensions = array_intersect(explode(' ', $instance['settings']['file_extensions']), array(
    'png',
    'gif',
    'jpg',
    'jpeg',
  ));
  $extension = array_rand(drupal_map_assoc($extensions));

  // Generate a max of 5 different images.
  if (!isset($images[$extension][$min_resolution][$max_resolution]) || count($images[$extension][$min_resolution][$max_resolution]) <= DEVEL_GENERATE_IMAGE_MAX) {
    if ($path = devel_generate_image($extension, $min_resolution, $max_resolution)) {
      $destination_dir = $field['settings']['uri_scheme'] . '://' . $instance['settings']['file_directory'];
      file_prepare_directory($destination_dir, FILE_CREATE_DIRECTORY);
      if ($uri = file_unmanaged_move($path, $destination_dir)) {
        $file = new stdClass();
        $file->fid = NULL;
        $file->uri = $uri;
        $file->filename = drupal_basename($uri);
        $file->filemime = file_get_mimetype($file->uri);

        // @todo Randomize file owner.
        $file->uid = 1;
        $file = file_save($file);
        $images[$extension][$min_resolution][$max_resolution][$file->fid] = $file;
      }
      else {
        return FALSE;
      }
    }
    else {
      return FALSE;
    }
  }
  else {

    // Select one of the images we've already generated for this field.
    $file = new stdClass();
    $file->fid = array_rand($images[$extension][$min_resolution][$max_resolution]);
  }
  $object_field['fid'] = $file->fid;
  $object_field['alt'] = devel_create_greeking(4);
  $object_field['title'] = devel_create_greeking(4);
  return $object_field;
}

/**
 * Private function for creating a random image.
 *
 * This function only works with the GD toolkit. ImageMagick is not supported.
 */
function devel_generate_image($extension = 'png', $min_resolution, $max_resolution) {
  if ($tmp_file = drupal_tempnam('temporary://', 'imagefield_')) {
    $destination = $tmp_file . '.' . $extension;
    file_unmanaged_move($tmp_file, $destination, FILE_CREATE_DIRECTORY);
    $min = explode('x', $min_resolution);
    $max = explode('x', $max_resolution);
    $width = rand((int) $min[0], (int) $max[0]);
    $height = rand((int) $min[1], (int) $max[1]);

    // Make an image split into 4 sections with random colors.
    $im = imagecreate($width, $height);
    for ($n = 0; $n < 4; $n++) {
      $color = imagecolorallocate($im, rand(0, 255), rand(0, 255), rand(0, 255));
      $x = $width / 2 * ($n % 2);
      $y = $height / 2 * (int) ($n >= 2);
      imagefilledrectangle($im, $x, $y, $x + $width / 2, $y + $height / 2, $color);
    }

    // Make a perfect circle in the image middle.
    $color = imagecolorallocate($im, rand(0, 255), rand(0, 255), rand(0, 255));
    $smaller_dimension = min($width, $height);
    $smaller_dimension = $smaller_dimension % 2 ? $smaller_dimension : $smaller_dimension;
    imageellipse($im, $width / 2, $height / 2, $smaller_dimension, $smaller_dimension, $color);
    $save_function = 'image' . ($extension == 'jpg' ? 'jpeg' : $extension);
    $save_function($im, drupal_realpath($destination));
  }
  return $destination;
}

Functions

Name	Description
devel_generate_image	Private function for creating a random image.
image_devel_generate
_image_devel_generate

Constants

Name	Description
DEVEL_GENERATE_IMAGE_MAX