function _simplecrop_define_initial_crop_area in SimpleCrop 7

Calculates initial area of crop selection.

Parameters

$width: Width of displayed image.

$height: Height of displayed image.

$settings: Field instance settings for initial crop area.

Return value

array|bool Initial area or FALSE if no initial area.

1 call to _simplecrop_define_initial_crop_area()

simplecrop_field_widget_process in includes/simplecrop.field.inc

Element #process callback for the image_image field type.

File

includes/simplecrop.field.inc, line 703

Contains information about field widget and related functions.

Code

function _simplecrop_define_initial_crop_area($width, $height, $settings) {

  // If crop area should be as big as possible.
  if ($settings['initial_area'] == SIMPLECROP_CROP_AREA_MAXIMIZE) {

    // If we don't have maximum area defined in settings - then use image
    // resolution as initial area.
    if (empty($settings['max_area']['width']) || empty($settings['max_area']['height'])) {
      $area_width = $width;
      $area_height = $height;
    }
    else {
      $area_width = $settings['max_area']['width'] < $width ? $settings['max_area']['width'] : $width;
      $area_height = $settings['max_area']['height'] < $height ? $settings['max_area']['height'] : $height;
    }
  }
  elseif ($settings['initial_area'] == SIMPLECROP_CROP_AREA_MINIMIZE) {

    // If we don't have minimal area defined in settings - then no initial area.
    if (empty($settings['min_area']['width']) || empty($settings['min_area']['height'])) {
      return FALSE;
    }
    else {
      $area_width = $settings['min_area']['width'] < $width ? $settings['min_area']['width'] : $width;
      $area_height = $settings['min_area']['height'] < $height ? $settings['min_area']['height'] : $height;
    }
  }
  else {
    return FALSE;
  }

  // Now we have initial area width and height, but we need also to
  // match it to selected aspect ratio.
  // @TODO: possible issue when new height or width is less/more than required.
  if (!empty($settings['ratio']['width']) && !empty($settings['ratio']['height'])) {
    $aspect_ratio = $settings['ratio']['width'] / $settings['ratio']['height'];
    $image_ratio = $area_width / $area_height;

    // Width is too big.
    if ($aspect_ratio < $image_ratio) {
      $area_width = round($area_width * $aspect_ratio / $image_ratio);
    }
    elseif ($aspect_ratio > $image_ratio) {
      $area_height = round($area_height * $image_ratio / $aspect_ratio);
    }
  }

  // Now we need to calculate an initial position of initial area.
  $x = ($width - $area_width) / 2;
  $x2 = $x + $area_width;
  $y = ($height - $area_height) / 2;
  $y2 = $y + $area_height;
  return array(
    'x' => $x,
    'y' => $y,
    'x2' => $x2,
    'y2' => $y2,
  );
}