function coloractions_adjustlevels_form in ImageCache Actions 8

Same name and namespace in other branches

1. 7 coloractions/imagecache_coloractions.module \coloractions_adjustlevels_form()

Image effect form callback for the brightness effect.

Settings for color level adjustment actions.

Parameters

array $data: The current configuration for this image effect.

Return value

array The form definition for this effect.

1 string reference to 'coloractions_adjustlevels_form'

imagecache_coloractions_image_effect_info in coloractions/imagecache_coloractions.module

Implements hook_image_effect_info().

File

coloractions/imagecache_coloractions.module, line 840

Code

function coloractions_adjustlevels_form(array $data) {
  $defaults = array(
    'independent_colors' => FALSE,
    'all_colors' => array(
      'low' => 0,
      'high' => 1,
    ),
    'per_color' => array(
      'low_red' => 0,
      'high_red' => 1,
      'low_green' => 0,
      'high_green' => 1,
      'low_blue' => 0,
      'high_blue' => 1,
    ),
  );
  $data = array_merge($defaults, $data);
  $form = array(
    '#type' => 'container',
    'help' => array(
      '#type' => 'markup',
      '#markup' => t("<p>Adjusting color levels scales the given channels to a range specified by the 'low' and 'high' values.\n      These 'low' and 'high' values can be any value between 0 and 1.\n      E.g. assume that 'low' is 0.2 and 'high' is 0.9.\n      Pixels that had a value of 0, will get a value of 0.2 * 255 = 51 and pixels that had a value of 255, will get a value of 0.9 * 255 = 229.</p>\n      <p>Note that color level adjustment is a mathematical filter and a such doesn't do automatic balancing.</p>"),
    ),
    '#element_validate' => array(
      'coloractions_validate_form',
    ),
  );
  $form['independent_colors'] = array(
    '#type' => 'checkbox',
    '#title' => t('Set each color independently'),
    '#default_value' => $data['independent_colors'],
  );
  $form['all_colors'] = array(
    '#type' => 'container',
    '#tree' => TRUE,
    '#title' => t('All colors range'),
    '#required' => !$data['independent_colors'],
    '#states' => array(
      'visible' => array(
        ':input[name="data[independent_colors]"]' => array(
          'checked' => FALSE,
        ),
      ),
      'required' => array(
        ':input[name="data[independent_colors]"]' => array(
          'checked' => FALSE,
        ),
      ),
    ),
  );
  $form['all_colors'] += coloractions_adjustlevels_form_helper(array(
    'low' => array(
      'title' => t('Low'),
      'default' => $data['all_colors']['low'],
    ),
    'high' => array(
      'title' => t('High'),
      'default' => $data['all_colors']['high'],
    ),
  ));
  $form['per_color'] = array(
    '#type' => 'container',
    '#tree' => TRUE,
    '#title' => t('Individual Color Ranges'),
    '#required' => $data['independent_colors'],
    '#states' => array(
      'visible' => array(
        ':input[name="data[independent_colors]"]' => array(
          'checked' => TRUE,
        ),
      ),
      'required' => array(
        ':input[name="data[independent_colors]"]' => array(
          'checked' => TRUE,
        ),
      ),
    ),
  );
  $form['per_color'] += coloractions_adjustlevels_form_helper(array(
    'low_red' => array(
      'title' => t('Red Low'),
      'default' => $data['per_color']['low_red'],
    ),
    'high_red' => array(
      'title' => t('Red High'),
      'default' => $data['per_color']['high_red'],
    ),
    'low_green' => array(
      'title' => t('Green Low'),
      'default' => $data['per_color']['low_green'],
    ),
    'high_green' => array(
      'title' => t('Green High'),
      'default' => $data['per_color']['high_green'],
    ),
    'low_blue' => array(
      'title' => t('Blue Low'),
      'default' => $data['per_color']['low_blue'],
    ),
    'high_blue' => array(
      'title' => t('Blue High'),
      'default' => $data['per_color']['high_blue'],
    ),
  ));
  return $form;
}