67 lines
2.1 KiB
PHP
67 lines
2.1 KiB
PHP
<?php
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/**
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* @file Utility form, conversion and rendering functions for image processes.
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*/
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/**
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* Prepares a sub form for displaying positioning fields.
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*
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* @param array $data
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* Effect data of the effect where this sub form will be integrated.
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*
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* @return array
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* The form definition for this sub form.
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*/
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function imagecache_actions_pos_form(array $data) {
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$defaults = array(
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'xpos' => 'center',
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'ypos' => 'center',
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);
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$data = array_merge($defaults, (array) $data);
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$description1 = t('Enter an offset in pixels (e.g. 10, 10px), a percentage (e.g. 25%), or one of the keywords: <em>left</em>, <em>center</em>, or <em>right</em> wih an optional offset (e.g. center, right - 10%).');
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$description2 = t('Enter an offset in pixels (e.g. 10, 10px), a percentage (e.g. 25%), or one of the keywords: <em>top</em>, <em>center</em>, or <em>bottom</em> wih an optional offset (e.g. center, bottom - 10%).');
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$form = array(
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'xpos' => array(
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'#type' => 'textfield',
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'#title' => t('X offset'),
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'#default_value' => $data['xpos'],
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'#size' => 6,
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'#description' => $description1,
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'#element_validate' => array('imagecache_actions_validate_number'),
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),
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'ypos' => array(
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'#type' => 'textfield',
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'#title' => t('Y offset'),
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'#default_value' => $data['ypos'],
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'#size' => 6,
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'#description' => $description2,
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'#element_validate' => array('imagecache_actions_validate_number'),
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),
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);
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return $form;
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}
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/**
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* Form element validator that checks for a valid number.
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*
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* @param array $element
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* @param $form_state
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*/
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function imagecache_actions_validate_number(&$element, &$form_state) {
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if (empty($element['#value'])) {
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form_set_value($element, 0, $form_state);
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}
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}
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/**
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* Form element validator that checks a transparency percentage value.
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*
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* @param array $element
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*/
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function imagecache_actions_validate_alpha(&$element/*, &$form_status*/) {
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if (!is_numeric($element['#value']) || $element['#value'] < 1 || $element['#value'] > 100) {
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form_set_error(join('][', $element['#parents']), t('Opacity must be a number between 1 and 100.'));
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}
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}
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