'imagecacheactions_rgb_form');
$form['farb'] = array('#weight' => -1); // Placeholder to get its weight right
$form['HEX'] = array(
'#type' => 'textfield',
'#title' => t('HEX'),
'#default_value' => $action['HEX'],
'#size' => 7,
'#element_validate' => array('imagecache_rgb_validate'),
);
return $form;
}
/**
* Element validate handler to ensure a hexadecimal color value.
*
* The core image_effect_color_validate() was not intelligent enough.
* Actually parse the value in order to see if it is parsable.
*/
function imagecache_rgb_validate($element, &$form_state) {
if ($element['#value'] != '') {
$rgba_value = imagecache_actions_hex2rgba($element['#value']);
if (!$rgba_value) {
// Returning NULL means a parse error
form_error($element, t('!name must be a hexadecimal color value.', array('!name' => $element['#title'])));
}
}
}
/**
* Render the subform in a table
*/
function theme_imagecacheactions_rgb_form($variables) {
$form = $variables['form'];
// Add a farb element
drupal_add_css('misc/farbtastic/farbtastic.css', array('preprocess' => FALSE));
drupal_add_js('misc/farbtastic/farbtastic.js');
// drupal_add_js(drupal_get_path('module', 'imagecache_coloractions') . '/color.js');
$hex_id = $form['HEX']['#id'];
$form['farb'] = array(
'#value' => "",
'#weight' => -1,
);
// Adds the JS that binds the textarea with the farb element
$js = "
$(document).ready(function() {
farbify($('#$hex_id'), '#$hex_id-farb');
});
function farbify(elt, wrapper) {
var farb = $.farbtastic(wrapper);
farb.linkTo(function(color) {
elt
.css('background-color', color)
.css('color', this.hsl[2] > 0.5 ? '#000' : '#fff')
.val(color.substring(1));
});
farb.setColor('#' + elt.val());
elt.bind('keyup', function(){ updateColor(elt, farb); });
}
function updateColor(elt, farb) {
var text = elt.val();
if (text.length == 6)
farb.setColor('#' + text);
}
";
drupal_add_js($js, array('type' => 'inline', 'scope' => JS_DEFAULT));
$output = drupal_render_children($form);
return $output;
}
/**
* @todo Please document this function.
* @see http://drupal.org/node/1354
*/
function theme_imagecacheactions_rgb($variables) {
$rgb = $variables['RGB'];
if ($rgb['HEX']) {
return " #{$rgb['HEX']} ";
}
else {
return ' ' . t('Transparent');
}
}