imagefield_crop.module in Imagefield Crop 5

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imagefield_crop.module

<?php

/**
 * imagefield crop widget
 * Author: Yuval Hager <[e-mail]>, 2008
 * Description: see README.txt
 */

/**
 * TODO:
 *
 * o) After changing crop see the old cropped image on preview                          [Same with imagefield]
 * o) Make the resizing box a little faster (ease on JS code)                           [NOT NOW]
 * o) Experiencing some segmentation faults (WSOD)                                         [Probably xdebug related]
 * o) Test with imagefield-2.0                                              [edit existing node loses the image]
 * o) NEW NODE: Uploading a file with existing filename shows the cropped image            [??]
 * o) Sometimes we see old file (upload file with exising filename into crop box of
 *    existing node. Probably a problem with 'file_create_path'                            [??]
 */
function imagefield_crop_menu($may_cache) {

  // REFACTOR: Maybe this is not needed, if we can use the original imagefield_menu
  if (!$may_cache && $_SESSION['imagefield']) {
    foreach ($_SESSION['imagefield'] as $fieldname => $files) {
      if (is_array($files)) {
        foreach ($files as $delta => $file) {
          if ($file['crop']['preview']) {
            $items[] = array(
              'path' => $file['crop']['preview'],
              'callback' => '_imagefield_crop_cropped_preview',
              'access' => TRUE,
              'type' => MENU_CALLBACK,
            );
          }
        }
      }
    }
  }
  return $items;
}
function _imagefield_crop_cropped_preview() {
  foreach ($_SESSION['imagefield'] as $fieldname => $files) {
    foreach ($files as $delta => $file) {
      if ($file['crop']['preview'] == $_GET['q']) {
        file_transfer($file['crop']['filepath'], array(
          'Content-Type: ' . mime_header_encode($file['filemime']),
          'Content-Length: ' . $file['filesize'],
        ));
        exit;
      }
    }
  }
}

/**
 * Implementation of hook_widget_info()
 */
function imagefield_crop_widget_info() {
  return array(
    'image crop' => array(
      'label' => 'Image with cropping',
      'field types' => array(
        'image',
      ),
    ),
  );
}

/**
 * Implementation of hook_widget_settings().
 */
function imagefield_crop_widget_settings($op, $widget) {
  switch ($op) {
    case 'callbacks':
      return array(
        'default value' => CONTENT_CALLBACK_CUSTOM,
      );
    case 'form':
      $form = array();
      $form['collapsible'] = array(
        '#type' => 'radios',
        '#title' => t('Collapsible behavior'),
        '#options' => array(
          1 => t('None.'),
          2 => t('Collapsible, expanded by default.'),
          3 => t('Collapsible, collapsed by default.'),
        ),
        '#default_value' => isset($widget['collapsible']) ? $widget['collapsible'] : 2,
      );
      $form['resolution'] = array(
        '#type' => 'textfield',
        '#title' => t('The resolution to crop the image onto'),
        '#default_value' => isset($widget['resolution']) ? $widget['resolution'] : '200x150',
        '#size' => 15,
        '#maxlength' => 10,
        '#description' => t('The output resolution of the cropped image, expressed as WIDTHxHEIGHT (e.g. 640x480). Set to 0 not to rescale after cropping.'),
      );
      $form['enforce_ratio'] = array(
        '#type' => 'checkbox',
        '#title' => t('Enforce box crop box ratio'),
        '#default_value' => isset($widget['enforce_ratio']) ? $widget['enforce_ratio'] : 1,
        '#description' => t('Check this to force the ratio of the output on the crop box. NOTE: If you leave this unchecked, final images may be distorted'),
      );
      $form['croparea'] = array(
        '#type' => 'textfield',
        '#title' => t('The resolution of the cropping area'),
        '#default_value' => isset($widget['croparea']) ? $widget['croparea'] : '500x500',
        '#size' => 15,
        '#maxlength' => 10,
        '#description' => t('The resolution of the area used for the cropping of the image. Image will be scaled down to this size before cropping. Use WIDTHxHEIGHT format'),
      );
      $form['always_show'] = array(
        // REFACTOR: give a better name
        '#type' => 'checkbox',
        '#title' => t('Always show the cropping area'),
        '#default_value' => isset($widget['always_show']) ? $widget['always_show'] : 0,
        '#description' => t('Check this to show the cropping area even before the image is uploaded'),
      );
      $form['use_unscaled'] = array(
        '#type' => 'checkbox',
        '#title' => t('Use original (unscaled) image for cropping'),
        '#default_value' => isset($widget['use_unscaled']) ? $widget['use_unscaled'] : 1,
        '#description' => t('For better quality, use the original image for cropping, and not the one scaled for viewing'),
      );
      $form['image_path'] = array(
        '#type' => 'textfield',
        '#title' => t('Image path'),
        '#default_value' => $widget['image_path'] ? $widget['image_path'] : '',
        '#description' => t('Optional subdirectory within the "%dir" directory where images will be stored. Do not include trailing slash.', array(
          '%dir' => variable_get('file_directory_path', 'files'),
        )),
        '#after_build' => array(
          'imagefield_form_check_directory',
        ),
      );
      $form['custom_alt'] = array(
        '#type' => 'checkbox',
        '#title' => t('Enable custom alternate text'),
        '#default_value' => $widget['custom_alt'] ? $widget['custom_alt'] : 0,
        '#description' => t('Enable custom alternate text for images. Filename will be used if not checked.'),
      );
      $form['custom_title'] = array(
        '#type' => 'checkbox',
        '#title' => t('Enable custom title text'),
        '#default_value' => $widget['custom_title'] ? $widget['custom_title'] : 0,
        '#description' => t('Enable custom title text for images. Filename will be used if not checked.'),
      );
      return $form;
    case 'validate':
      list($rw, $rh) = explode('x', $widget['resolution']);
      if ($widget['enforce_ratio'] && (!is_numeric($rw) || intval($rw) != $rw || $rw <= 0 || !is_numeric($rh) || intval($rh) != $rh || $rh <= 0)) {
        form_set_error('resolution', t('Target resolution must be defined as WIDTHxHEIGHT if resolution is to be enforced'));
      }
      list($cw, $ch) = explode('x', $widget['croparea']);
      if (!is_numeric($cw) || intval($cw) != $cw || $cw <= 0 || !is_numeric($ch) || intval($ch) != $ch || $ch <= 0) {
        form_set_error('croparea', t('Crop area resolution must be defined as WIDTHxHEIGHT'));
      }
      _imagefield_crop_verify_gd();
      break;
    case 'save':
      return array(
        'collapsible',
        'resolution',
        'enforce_ratio',
        'croparea',
        'always_show',
        'use_unscaled',
        'image_path',
        'custom_alt',
        'custom_title',
      );
  }
}

/**
 * Implementation of hook_widget().
 */
function imagefield_crop_widget($op, &$node, $field, &$node_field) {
  switch ($op) {
    case 'default value':
      return array();
    case 'prepare form values':
      _imagefield_crop_widget_prepare_form_values($node, $field, $node_field);
      break;
    case 'form':
      return _imagefield_crop_widget_form($node, $field, $node_field);
      break;
    case 'validate':
      if ($field['required']) {
        if (!count($node_field)) {
          form_set_error($field['field_name'], $field['widget']['label'] . ' is required.');
        }
      }
      break;
    case 'submit':

      /**
       * move cropped file into the file's place
       */
      foreach ($node_field as $delta => $file) {
        $cropped = $file['crop']['filepath'];
        if (is_file($cropped)) {
          if (!file_copy($cropped, $file['filepath'], FILE_EXISTS_REPLACE)) {
            form_set_error(NULL, 'Could not copy cropped file');
          }
          file_delete($file['crop']['filepath']);

          //flush the imagecache presets
          if (module_exists('imagecache')) {
            imagecache_image_flush($file['filepath']);
          }
        }
        file_delete($file['filepath'] . '.unscaled');
      }
      break;
  }
}
function _imagefield_crop_widget_prepare_form_values(&$node, $field, &$node_field) {
  $fieldname = $field['field_name'];

  // clean up the session if we weren't posted.
  if (!count($_POST)) {
    imagefield_crop_clear_session();
  }

  // Attach new files
  $new_file_uploaded = FALSE;
  if ($file = file_check_upload($fieldname . '_upload')) {
    $file = (array) $file;
    if (strpos($file['filemime'], 'image') !== FALSE) {
      $file = _imagefield_crop_scale_image($file, $field);
      if ($pos = strrpos($file['filename'], '.')) {
        $name = substr($file['filename'], 0, $pos);
        $ext = substr($file['filename'], $pos);
      }
      else {
        $name = $file['filename'];
      }

      // Create the filepath for the image preview
      $filepath = file_create_filename($name . '_' . time() . $ext, file_create_path($field['widget']['image_path']));
      if (variable_get('file_downloads', FILE_DOWNLOADS_PUBLIC) == FILE_DOWNLOADS_PRIVATE) {
        if (strpos($filepath, file_directory_path()) !== FALSE) {
          $filepath = trim(substr($filepath, strlen(file_directory_path())), '\\/');
        }
        $filepath = 'system/files/' . $filepath;
      }
      $file['fid'] = 'upload';
      $file['preview'] = $filepath;

      // If a single field, mark any other images for deletion and delete files in session
      if (!$field['multiple']) {
        if (is_array($node_field)) {
          foreach ($node_field as $delta => $session_file) {
            $node_field[$delta]['flags']['delete'] = TRUE;
          }
        }
        imagefield_crop_clear_field_session($fieldname);
      }

      // Add the file to the session
      $file_id = count($node_field) + count($_SESSION['imagefield'][$fieldname]);
      $_SESSION['imagefield'][$fieldname][$file_id] = $file;
      unset($_SESSION['imagefield'][$fieldname][$file_id]['crop']);

      /* REFACTOR: does this indeed clear crop values upon upload ? */
      $new_file_uploaded = TRUE;
    }
  }

  // Load files from preview state. before committing actions.
  if (is_array($_SESSION['imagefield'][$fieldname]) && count($_SESSION['imagefield'][$fieldname])) {
    foreach ($_SESSION['imagefield'][$fieldname] as $delta => $file) {
      if (isset($_POST[$fieldname][$delta]['crop'])) {

        // we have a file in the session, but crop attributes on $_POST. Combine them
        foreach (array(
          'x',
          'y',
          'width',
          'height',
          'changed',
        ) as $att) {
          $file['crop'][$att] = $_POST[$fieldname][$delta]['crop'][$att];

          //$file['crop'] = $_POST[$fieldname][$delta]['crop'];
        }
      }
      if (!isset($file['filepath'])) {

        // only crop info on the session - crop existing file
        $node_field[$delta]['crop'] = $file['crop'];
      }
      else {
        $node_field[] = $file;
      }
    }
  }
  else {
    if (is_array($_POST[$fieldname])) {

      // We were posted, but nothing in the session, so act on existing image
      foreach ($_POST[$fieldname] as $delta => $file) {
        $node_field[$delta]['crop'] = $file['crop'];
      }
    }
    else {

      // We were not posted, and nothing on the session, act on existing image
      // but make sure it fits the cropping area first
      // A fix for http://drupal.org/node/212883
      foreach ($node_field as $delta => $file) {
        $node_field[$delta] = _imagefield_crop_scale_image($file, $field);
      }
    }
  }

  /**
   * Here we should crop the image, if crop values are given
   */
  foreach ($node_field as $delta => $file) {
    if ($file['crop']['changed']) {

      /* crop is requested */

      /* REFACTOR: wild try - this might actually work */
      if ($delta) {
        $node_field[$delta - 1]['flags']['delete'] = TRUE;
      }

      /* REFACTOR: make code readable !! */
      if (!isset($file['crop']['filepath'])) {
        $node_field[$delta]['crop']['filepath'] = tempnam(file_directory_temp(), 'tmpcp_');
      }
      _imagefield_crop_resize($node_field[$delta]['filepath'], $file['crop'], $field['widget']['resolution'], $node_field[$delta]['crop']['filepath']);

      /* @@@REFACTOR: is this line required ? */
      $node_field[$delta]['crop']['preview'] = ($node_field[$delta]['fid'] == 'upload' ? $node_field[$delta]['preview'] : $node_field[$delta]['filepath']) . '-crop';

      // save crop path and preview path in the session
      $_SESSION['imagefield'][$fieldname][$delta]['crop'] = $node_field[$delta]['crop'];
    }
  }
}
function imagefield_crop_clear_session() {
  if (is_array($_SESSION['imagefield']) && count($_SESSION['imagefield'])) {
    foreach (array_keys($_SESSION['imagefield']) as $fieldname) {
      imagefield_crop_clear_field_session($fieldname);
    }
    unset($_SESSION['imagefield']);
  }
}
function imagefield_crop_clear_field_session($fieldname) {
  if (is_array($_SESSION['imagefield'][$fieldname]) && count($_SESSION['imagefield'][$fieldname])) {
    foreach ($_SESSION['imagefield'][$fieldname] as $files) {
      file_delete($file['filepath']);
      file_delete($file['crop']['filepath']);
      file_delete($file['filepath'] . '.unscaled');
    }
    unset($_SESSION['imagefield'][$fieldname]);
  }
}
function _imagefield_crop_widget_form($node, $field, &$node_field) {
  $fieldname = $field['field_name'];

  // REFACTOR: Do we need CSS file from imagefield.module?
  drupal_add_css(drupal_get_path('module', 'imagefield') . '/imagefield.css');
  $module_path = drupal_get_path('module', 'imagefield_crop');
  drupal_add_css($module_path . '/imagefield_crop.css');
  jquery_interface_add();
  if ($field['widget']['enforce_ratio']) {
    list($w, $h) = explode('x', $field['widget']['resolution']);
    $ratio = $h / $w;
  }
  else {
    $ratio = 0;
  }
  drupal_add_js("Drupal.imagefield_crop_{$fieldname} = { ratio: {$ratio} }", 'inline');
  drupal_add_js($module_path . '/imagefield_crop.js');
  $form = array();
  $form[$fieldname] = array(
    '#type' => 'fieldset',
    '#title' => $field['widget']['label'],
    '#weight' => $field['widget']['weight'],
    '#collapsible' => $field['widget']['collapsible'] != 1,
    '#collapsed' => $field['widget']['collapsible'] == 3,
    '#tree' => TRUE,
  );

  // Seperate from tree becase of that silly things won't be
  // displayed if they are a child of '#type' = form issue
  $form[$fieldname][$fieldname . '_upload'] = array(
    '#type' => 'file',
    '#description' => $field['widget']['description'],
    '#tree' => FALSE,
    '#weight' => 9,
  );
  $form[$fieldname]['upload'] = array(
    '#type' => 'button',
    '#value' => t('Upload'),
    '#name' => 'cck_imagefield_' . $fieldname . '_op',
    // REFACTOR: cck_imagefield_crop_ ??
    '#attributes' => array(
      'id' => $fieldname . '-attach-button',
    ),
    '#tree' => FALSE,
    '#weight' => 10,
  );

  // Store the file data object to be carried on.
  list($w, $h) = explode('x', $field['widget']['resolution']);
  if (is_array($node_field) && count($node_field)) {
    $crop_attrs = array(
      // REFACTOR: Are weights necessary here?
      'x' => array(
        'weight' => 5,
        'default' => 0,
      ),
      'y' => array(
        'weight' => 6,
        'default' => 0,
      ),
      'width' => array(
        'weight' => 7,
        'default' => $w ? $w : 50,
      ),
      'height' => array(
        'weight' => 8,
        'default' => $h ? $h : 50,
      ),
      'changed' => array(
        'weight' => 0,
        'default' => 0,
      ),
    );

    // ###
    //    drupal_set_message('node_field is <pre>'. print_r($node_field, TRUE)  .'</pre>');
    // ###
    foreach ($node_field as $delta => $file) {
      if ($file['filepath'] && !$file['flags']['delete']) {
        $cropid = "{$fieldname}-{$delta}";
        $form[$fieldname][$delta] = array(
          '#theme' => 'imagefield_crop_edit_crop_image_row',
          '#croparea' => $field['widget']['croparea'],
          '#cropid' => $cropid,
        );
        $form[$fieldname][$delta]['flags']['delete'] = array(
          '#type' => 'checkbox',
          '#title' => t('Delete'),
          '#default_value' => 0,
        );
        $filename = $file['fid'] == 'upload' ? file_create_filename($file['filename'], file_create_path($field['widget']['image_path'])) : $file['filepath'];
        if (is_file($file['filepath']) && (list($width, $height, $type, $image_attributes) = @getimagesize($file['filepath']))) {
          if ($field['widget']['enforce_ratio']) {
            list($fw, $fh) = explode('x', $field['widget']['resolution']);
            $ratio = $fw / $fh;
            $image_ratio = $width / $height;
            if ($ratio > $image_ratio) {
              $height = $width / $ratio;
            }
            else {
              $width = $height * $ratio;
            }

            // if the enforced ratio is different, force crop
            $crop_attrs['changed']['default'] = $ratio != $image_ratio;
          }
          $crop_attrs['width']['default'] = $width;
          $crop_attrs['height']['default'] = $height;
        }
        $form[$fieldname][$delta]['preview'] = array(
          '#type' => 'markup',
          '#value' => theme('imagefield_crop_crop_image', $file, $file['alt'], $file['title'], NULL, TRUE, "{$fieldname}-{$delta}"),
        );
        $form[$fieldname][$delta]['crop'] = array();
        foreach ($crop_attrs as $attr => $value) {
          $form[$fieldname][$delta]['crop'][$attr] = array(
            '#type' => 'hidden',
            '#title' => $attr,
            '#size' => 4,
            '#maxlength' => 25,
            '#weight' => $value['weight'],
            '#attributes' => array(
              'class' => 'edit-image-crop-' . $attr,
            ),
            '#value' => $file['crop'][$attr] ? $file['crop'][$attr] : $value['default'],
          );
        }

        /**
         * Show crop preview
         */
        $cropped = $file['crop'];
        $cropped['fid'] = 'upload';

        /* fool the theme function */
        $form[$fieldname][$delta]['crop']['preview'] = array(
          '#type' => 'markup',
          '#value' => theme('imagefield_image', $cropped, '', '', array(
            'class' => 'imagefield-crop-image-preview',
          )),
        );

        // ###
        //        drupal_set_message('imagefield['. $fieldname .'] '. $op .' node field: <pre>'. print_r($node_field, true) .'</pre>');
        // ###
        $form[$fieldname][$delta]['description'] = array(
          '#type' => 'markup',
          '#value' => '<strong>' . t('Filename: ') . '</strong>' . $file['filename'],
        );
        $form[$fieldname][$delta]['alt'] = array(
          '#type' => 'hidden',
          '#value' => $file['filename'],
        );

        // overwrite with an input field if custom_alt is flagged;
        if ($field['widget']['custom_alt']) {
          $form[$fieldname][$delta]['alt'] = array(
            '#type' => 'textfield',
            '#title' => t('Alternate text'),
            '#default_value' => $file['alt'],
            '#description' => t('Alternate text to be displayed if the image cannot be displayed.'),
            '#maxlength' => 255,
            '#size' => 10,
          );
        }
        $form[$fieldname][$delta]['title'] = array(
          '#type' => 'hidden',
          '#value' => $file['filename'],
        );

        // overwrite with an input field if custom_title is flagged;
        if ($field['widget']['custom_title']) {
          $form[$fieldname][$delta]['title'] = array(
            '#type' => 'textfield',
            '#title' => t('Title'),
            '#default_value' => $file['title'],
            '#description' => t('Text to be displayed on mouse overs.'),
            '#maxlength' => 255,
            '#size' => 10,
          );
        }

        // Special handling for single value fields
        if (!$field['multiple']) {
          $form[$fieldname][$delta]['replace'] = array(
            '#type' => 'markup',
            '#value' => t('If a new image is chosen, the current image will be replaced upon submitting the form.'),
          );
        }
      }
      elseif ($file['filepath'] && $file['flags']['delete']) {

        // Hide all the form values if this item is marked for deletion
        $form[$fieldname][$delta]['flags']['delete'] = array(
          '#type' => 'value',
          '#value' => $file['flags']['delete'],
        );
        $form[$fieldname][$delta]['title'] = array(
          '#type' => 'value',
          '#value' => $file['title'],
        );
        $form[$fieldname][$delta]['alt'] = array(
          '#type' => 'value',
          '#value' => $file['alt'],
        );
      }
      $form[$fieldname][$delta]['filename'] = array(
        '#type' => 'value',
        '#value' => $file['filename'],
      );
      $form[$fieldname][$delta]['filepath'] = array(
        '#type' => 'value',
        '#value' => $file['filepath'],
      );
      $form[$fieldname][$delta]['filemime'] = array(
        '#type' => 'value',
        '#value' => $file['filemime'],
      );
      $form[$fieldname][$delta]['filesize'] = array(
        '#type' => 'value',
        '#value' => $file['filesize'],
      );
      $form[$fieldname][$delta]['fid'] = array(
        '#type' => 'value',
        '#value' => $file['fid'],
      );

      //$form[$fieldname][$delta]['preview-path'] = array('#type' => 'value',  '#value' => $filename);
      $form[$fieldname][$delta]['crop']['filepath'] = array(
        '#type' => 'value',
        '#value' => $file['crop']['filepath'],
      );

      //$form[$fieldname][$delta]['crop']['preview-path'] = array('#type' => 'value',  '#value' => $file['crop']['preview']);
    }
  }
  else {
    if ($field['widget']['always_show']) {
      $cropid = "{$fieldname}-0";

      // just show croppable area, without any image
      $form[$fieldname][0] = array(
        '#theme' => 'imagefield_crop_edit_crop_image_row',
        '#croparea' => $field['widget']['croparea'],
        '#cropid' => $cropid,
      );
      $form[$fieldname][0]['preview'] = array(
        '#type' => 'markup',
        /* REFACTOR: use different theme based on croppable widget settings */
        '#value' => theme('imagefield_crop_crop_image', NULL, '', '', NULL, FALSE, $cropid),
      );
    }
  }
  return $form;
}
function _imagefield_crop_verify_gd() {
  if (image_get_toolkit() != 'gd') {
    $toolkits = image_get_available_toolkits();
    drupal_set_message(t('Image cropping only works with %toolkit. Please select it at !url, or ask your system administrator to do so', array(
      '%toolkit' => $toolkits['gd'],
      '!url' => l('Image Toolkit selection page', 'admin/settings/image-toolkit'),
    )), 'error');
    return FALSE;
  }
  return TRUE;
}
function _imagefield_crop_resize($src, $crop = NULL, $resize = 0, $dst = NULL) {
  if (!is_file($src)) {
    return FALSE;
  }

  /**
   * The drupal image API is not good enough:
   * 1. It enforces file saving between operations
   * 2. In case of lossy compression (jpeg) quality is reduced on every action (http://drupal.org/node/128963)
   *
   * ==> This should be better with Drupal 6, so take note to fix this for the Drupal 6 version of this module
   */
  if (!_imagefield_crop_verify_gd()) {
    return FALSE;
  }
  $info = image_get_info($src);
  if (!$info) {
    return FALSE;
  }

  // if an unscaled version of the image exists, we should use it for cropping
  $unscaled = $src . '.unscaled';
  if (is_file($unscaled)) {
    $unscaled_info = image_get_info($unscaled);
    $scale = array();
    $scale['width'] = $unscaled_info['width'] / $info['width'];
    $scale['height'] = $unscaled_info['height'] / $info['height'];
    if (!empty($crop)) {
      $crop['x'] *= $scale['width'];
      $crop['y'] *= $scale['height'];
      $crop['width'] *= $scale['width'];
      $crop['height'] *= $scale['height'];
    }
    $src = $unscaled;
    $info = $unscaled_info;
  }

  // find the final image dimensions
  list($width, $height) = array(
    $info['width'],
    $info['height'],
  );
  if ($resize) {
    list($width, $height) = explode('x', $resize);
  }
  elseif (!empty($crop)) {
    list($width, $height) = array(
      $crop['width'],
      $crop['height'],
    );
  }

  /* REFACTOR: Don't scale up */
  $im = image_gd_open($src, $info['extension']);
  $res = imageCreateTrueColor($width, $height);
  $background = imageColorAllocate($res, 255, 255, 255);
  imageCopyResampled($res, $im, 0, 0, $src_x = $crop['x'] ? $crop['x'] : 0, $src_y = $crop['y'] ? $crop['y'] : 0, $width, $height, $src_w = $crop['width'] ? $crop['width'] : $info['width'], $src_h = $crop['height'] ? $crop['height'] : $info['height']);
  $ratio_w = $width / $src_w;
  $ratio_h = $height / $src_h;

  /**
   * Fill background around the image if required.
   * Note that if it is not required, the rectangles are outside of the
   * image boundaries anyway.
   * REFACTOR: verify which is better in performance - with conditionals or w/o
   */

  /* bottom */
  imageFilledRectangle($res, 0, $ratio_h * ($info['height'] - $src_y), $width, $height, $background);

  /* right */
  imageFilledRectangle($res, $ratio_w * ($info['width'] - $src_x), 0, $width, $height, $background);

  /* top */
  if ($src_y < 0) {
    imageFilledRectangle($res, 0, 0, $width, $ratio_h * -1 * $src_y, $background);
  }

  /* left */
  if ($src_x < 0) {
    imageFilledRectangle($res, 0, 0, $ratio_w * -1 * $src_x, $height, $background);
  }
  $result = image_gd_close($res, empty($dst) ? $src : $dst, $info['extension']);
  imageDestroy($im);
  imageDestroy($res);
  return $result;
}
function _imagefield_crop_scale_image($file, $field) {
  if ($field['widget']['use_unscaled'] && $file['filepath'] != NULL) {
    $unscaled = $file['filepath'];
    file_copy($unscaled, $file['filepath'] . '.unscaled', FILE_EXISTS_REPLACE);
  }
  $file = _imagefield_scale_image($file, $field['widget']['croparea']);
  return $file;
}
function theme_imagefield_crop_edit_crop_image_row($element) {
  list($cropw, $croph) = explode('x', $element['#croparea']);
  $cropid = $element['#cropid'];
  $output .= '<div class="imagefield-crop-preview" style="width:' . $cropw . 'px; height:' . $croph . 'px">';
  $output .= drupal_render($element['preview']) . '</div>';
  if ($element['crop']) {
    $output .= '<div class="imagefield-edit-image-detail" id="imagefield-edit-image-detail-' . $cropid . '">';

    // REFACTOR: Don't 'flags' only if  multiple is unsupported
    $output .= '<div class="imagefield-edit-image-flags">' . drupal_render($element['flags']) . '</div>';
    $output .= '<div class="imagefield-edit-image-description">' . drupal_render($element['description']);
    $output .= '</div>';
    $output .= drupal_render($element['crop']);
    $output .= drupal_render($element['alt']);
    $output .= drupal_render($element['title']);
    $output .= '</div>';
  }
  $output = '<div class="imagefield-edit-image-row clear-block" id="imagefield-edit-image-row-' . $cropid . '">' . $output . '</div>';
  if (isset($element['replace'])) {
    $output .= '<div class="imagefield-edit-image-replace">' . drupal_render($element['replace']) . '</div>';
  }
  return $output;
}
function theme_imagefield_crop_crop_image($file = NULL, $alt = '', $title = '', $attributes = NULL, $getsize = TRUE, $cropId = '') {
  $output = '<div class="imagefield-crop-wrapper">';
  if (!empty($file)) {
    $file = (array) $file;
    if (!$getsize || is_file($file['filepath']) && (list($width, $height, $type, $image_attributes) = @getimagesize($file['filepath']))) {

      //$attributes = drupal_attributes($attributes);
      $alt = empty($alt) ? $file['alt'] : $alt;
      $title = empty($title) ? $file['title'] : $title;
      $url = $file['fid'] == 'upload' ? url($file['preview']) : file_create_url($file['filepath']);
      $output .= '
<div id="image-crop-container-' . $cropId . '" class="image-crop-container"
     style="background-image: url(\'' . $url . '\'); width:' . $width . 'px; height:' . $height . 'px; margin-left:-' . $width / 2 . 'px; margin-top:-' . $height / 2 . 'px;">
</div>

<div id="resizeMe-' . $cropId . '" class="resizeMe" style="background-image: url(\'' . $url . '\')">
	<div id="resizeSE-' . $cropId . '" class="resizeSE"></div>
	<div id="resizeE-' . $cropId . '" class="resizeE"></div>
	<div id="resizeNE-' . $cropId . '" class="resizeNE"></div>
	<div id="resizeN-' . $cropId . '" class="resizeN"></div>
	<div id="resizeNW-' . $cropId . '" class="resizeNW"></div>
	<div id="resizeW-' . $cropId . '" class="resizeW"></div>
	<div id="resizeSW-' . $cropId . '" class="resizeSW"></div>
	<div id="resizeS-' . $cropId . '" class="resizeS"></div>
</div>';
    }
  }
  $output .= '</div>';
  return $output;
}

Functions

Name	Description
imagefield_crop_clear_field_session
imagefield_crop_clear_session
imagefield_crop_menu	TODO:
imagefield_crop_widget	Implementation of hook_widget().
imagefield_crop_widget_info	Implementation of hook_widget_info()
imagefield_crop_widget_settings	Implementation of hook_widget_settings().
theme_imagefield_crop_crop_image
theme_imagefield_crop_edit_crop_image_row
_imagefield_crop_cropped_preview
_imagefield_crop_resize
_imagefield_crop_scale_image
_imagefield_crop_verify_gd
_imagefield_crop_widget_form
_imagefield_crop_widget_prepare_form_values