devel_generate/image.devel_generate.inc

   1 <?php
   2
   3 define('DEVEL_GENERATE_IMAGE_MAX', 5);
   4
   5 function image_devel_generate($object, $field, $instance, $bundle) {
   6   if (function_exists('imagejpeg')) {
   7     $devel_generate_image_function = variable_get('devel_generate_image_function', '_image_devel_generate');
   8     if (!function_exists($devel_generate_image_function)) {
   9       $devel_generate_image_function = '_image_devel_generate';
  10     }
  11     if (field_behaviors_widget('multiple values', $instance) == FIELD_BEHAVIOR_CUSTOM) {
  12       return devel_generate_multiple($devel_generate_image_function, $object, $field, $instance, $bundle);
  13     }
  14     else {
  15       return $devel_generate_image_function($object, $field, $instance, $bundle);
  16     }
  17   }
  18 }
  19
  20 function _image_devel_generate($object, $field, $instance, $bundle) {
  21   $object_field = array();
  22   static $images = array();
  23
  24   $min_resolution = empty($instance['settings']['min_resolution']) ? '100x100' : $instance['settings']['min_resolution'];
  25   $max_resolution = empty($instance['settings']['max_resolution']) ? '600x600' : $instance['settings']['max_resolution'];
  26   $extensions = array_intersect(explode(' ', $instance['settings']['file_extensions']), array('png', 'gif', 'jpg', 'jpeg'));
  27   $extension = array_rand(drupal_map_assoc($extensions));
  28
  29   // Generate a max of 5 different images.
  30   if (!isset($images[$extension][$min_resolution][$max_resolution]) || count($images[$extension][$min_resolution][$max_resolution]) <= DEVEL_GENERATE_IMAGE_MAX) {
  31     if ($path = devel_generate_image($extension, $min_resolution, $max_resolution)) {
  32       $source = entity_create('file', array());
  33       $source->uri = $path;
  34       $source->uid = 1; // TODO: randomize? Use case specific.
  35       $source->filemime = 'image/' . pathinfo($path, PATHINFO_EXTENSION);
  36       $source->filename = drupal_basename($path);
  37       $destination_dir = $field['settings']['uri_scheme'] . '://' . $instance['settings']['file_directory'];
  38       file_prepare_directory($destination_dir, FILE_CREATE_DIRECTORY);
  39       $destination = $destination_dir . '/' . basename($path);
  40       $file = file_move($source, $destination, FILE_CREATE_DIRECTORY);
  41       $images[$extension][$min_resolution][$max_resolution][$file->fid] = $file;
  42     }
  43     else {
  44       return FALSE;
  45     }
  46   }
  47   else {
  48     // Select one of the images we've already generated for this field.
  49     $file = new stdClass();
  50     $file->fid = array_rand($images[$extension][$min_resolution][$max_resolution]);
  51   }
  52
  53   $object_field['fid'] = $file->fid;
  54   $object_field['alt'] = devel_create_greeking(4);
  55   $object_field['title'] = devel_create_greeking(4);
  56   return $object_field;
  57 }
  58
  59 /**
  60  * Private function for creating a random image.
  61  *
  62  * This function only works with the GD toolkit. ImageMagick is not supported.
  63  */
  64 function devel_generate_image($extension = 'png', $min_resolution, $max_resolution) {
  65   if ($tmp_file = drupal_tempnam('temporary://', 'imagefield_')) {
  66     $destination = $tmp_file . '.' . $extension;
  67     file_unmanaged_move($tmp_file, $destination, FILE_CREATE_DIRECTORY);
  68
  69     $min = explode('x', $min_resolution);
  70     $max = explode('x', $max_resolution);
  71
  72     $width = rand((int)$min[0], (int)$max[0]);
  73     $height = rand((int)$min[1], (int)$max[1]);
  74
  75     // Make an image split into 4 sections with random colors.
  76     $im = imagecreate($width, $height);
  77     for ($n = 0; $n < 4; $n++) {
  78       $color = imagecolorallocate($im, rand(0, 255), rand(0, 255), rand(0, 255));
  79       $x = $width/2 * ($n % 2);
  80       $y = $height/2 * (int) ($n >= 2);
  81       imagefilledrectangle($im, $x, $y, $x + $width/2, $y + $height/2, $color);
  82     }
  83
  84     // Make a perfect circle in the image middle.
  85     $color = imagecolorallocate($im, rand(0, 255), rand(0, 255), rand(0, 255));
  86     $smaller_dimension = min($width, $height);
  87     $smaller_dimension = ($smaller_dimension % 2) ? $smaller_dimension : $smaller_dimension;
  88     imageellipse($im, $width/2, $height/2, $smaller_dimension, $smaller_dimension, $color);
  89
  90     $save_function = 'image'. ($extension == 'jpg' ? 'jpeg' : $extension);
  91     $save_function($im, drupal_realpath($destination));
  92   }
  93   return $destination;
  94 }