) . ')
',
);
return $form;
}
function textimage_captchavalidate(&$captcha_word, &$correct) {
$captcha_word = drupal_strtolower($captcha_word);
if (($_SESSION['captcha'] != '') && $captcha_word == $_SESSION['captcha']) {
$correct = true;
}
else {
$correct = false;
form_set_error('captcha_response', t('The image verification code you entered is incorrect.'));
}
}
/**
* Implementation of hook_menu().
*/
function textimage_menu($may_cache) {
$items = array();
$suffix = '';
if (arg(2)!=null) $suffix='/'.arg(2);
$items[] = array(
'path' => '_textimage/image'.$suffix, 'title' => t('textimage'),
'callback' => '_textimage_image',
'access' => user_access('access textimages'),
'type' => MENU_CALLBACK
);
return $items;
}
function textimage_perm() {
return array('access textimages');
}
function textimage_settings() {
$fonts_path = variable_get("textimage_fonts_path", "");
$images_path = variable_get("textimage_images_path", "");
//check for GD
if (!function_exists(imagecreate))
drupal_set_message(t('Image library not available. Textimage needs the GD library extension to be installed. Please install GD.'));
//check for TTF support
elseif (!function_exists(imagettftext))
drupal_set_message(t('Your image library does not seem to have TrueType font support. Textimage will work, but will use the default inbuilt font.'),'status');
//check for valid font path
elseif ($fonts_path!="" && !is_dir($fonts_path))
drupal_set_message(t('The current font path is invalid. The default font will be used.'));
//check for valid image path
if ($images_path!="" && !is_dir($images_path))
drupal_set_message(t('The current images path is invalid. No images will be used.'));
//Fonts settings
$form['fonts'] = array(
'#type' => 'fieldset', '#title' => t('Fonts settings'),
'#collapsible' => TRUE, '#collapsed' => FALSE
);
$form['fonts']['textimage_use_only_upper'] = array(
'#type' => 'checkbox',
'#title' => t('Use only Uppercase'),
'#default_value' => variable_get('textimage_use_only_upper',0)
);
$form['fonts']['textimage_fonts_path'] = array(
'#type' => 'textfield',
'#title' => t('TrueType Fonts Path'),
'#default_value' => $fonts_path,
'#size' => 30,
'#maxlength' => 255,
'#description' => t('Location of the directory where the Truetype (.ttf) fonts are stored. If you do not provide any fonts, the module will use the default font for text. Relative paths will be resolved relative to the Drupal installation directory.'),
);
$form['fonts']['textimage_font_size'] = array(
'#type' => 'textfield',
'#title' => t('Font Size'),
'#default_value' => variable_get('textimage_font_size',24),
'#size' => 5,
'#maxlength' => 2,
'#description' => t('Font size of Captcha text (in pixels).'),
'#validate' => array("_textimage_number_validate" => array("textimage_font_size")),
);
$form['fonts']['textimage_char_spacing_max'] = array(
'#type' => 'textfield',
'#title' => t('Character Spacing'),
'#default_value' => variable_get('textimage_char_spacing_max',10),
'#size' => 5,
'#maxlength' => 4,
'#description' => t('Sets the kerning between letters in Captcha. Higher numbers indicate more spacing.'),
'#validate' => array("_textimage_number_validate" => array("textimage_char_spacing_max")),
);
$form['fonts']['textimage_char_jiggle_amount'] = array(
'#type' => 'textfield',
'#title' => t('Character Jiggle'),
'#default_value' => variable_get('textimage_char_jiggle_amount',5),
'#size' => 5,
'#maxlength' => 2,
'#description' => t('Sets the amount of up and down movement in the Captcha letters. Higher numbers indicate more jiggling.'),
'#validate' => array("_textimage_number_validate" => array("textimage_char_jiggle_amount")),
);
$form['fonts']['textimage_char_rotate_amount'] = array(
'#type' => 'textfield',
'#title' => t('Character Rotation'),
'#default_value' => variable_get('textimage_char_rotate_amount',5),
'#size' => 5,
'#maxlength' => 2,
'#description' => t('Sets the amount of rotation in the Captcha letters (in degrees, only works with non-default fonts).'),
'#validate' => array("_textimage_number_validate" => array("textimage_char_rotate_amount")),
);
$form['fonts']['textimage_char_size_amount'] = array(
'#type' => 'textfield',
'#title' => t('Character Size Adjustment'),
'#default_value' => variable_get('textimage_char_size_amount',2),
'#size' => 5,
'#maxlength' => 2,
'#description' => t('Sets the amount of variation in size between the different letters in the Captcha (in pixels).'),
'#validate' => array("_textimage_number_validate" => array("textimage_char_size_amount")),
);
//Image settings
$form['images'] = array(
'#type' => 'fieldset', '#title' => t('Image settings'),
'#collapsible' => TRUE, '#collapsed' => FALSE
);
$form['images']['textimage_images_path'] = array(
'#type' => 'textfield',
'#title' => t('Background Images Path'),
'#default_value' => $images_path,
'#size' => 30,
'#maxlength' => 255,
'#description' => t('Location of the directory where the background images are stored. If you do not provide a directory, solid colors will be used. Relative paths will be resolved relative to the Drupal installation directory.'),
);
$form['images']['textimage_image_noise'] = array(
'#type' => 'textfield',
'#title' => t('Image Noise (pixels)'),
'#default_value' => variable_get('textimage_image_noise',4),
'#size' => 5,
'#maxlength' => 4,
'#description' => t('Sets the amount of noise (random pixels) in the Captcha image. Higher numbers indicate more noise.'),
'#validate' => array("_textimage_number_validate" => array("textimage_image_noise")),
);
$form['images']['textimage_image_lines'] = array(
'#type' => 'textfield',
'#title' => t('Image Noise (lines)'),
'#default_value' => variable_get('textimage_image_lines',4),
'#size' => 5,
'#maxlength' => 4,
'#description' => t('Sets the amount of noise (random lines) in the Captcha image. Higher numbers indicate more noise.'),
'#validate' => array("_textimage_number_validate" => array("textimage_image_lines")),
);
$form['images']['textimage_image_margin'] = array(
'#type' => 'textfield',
'#title' => t('Image Margin'),
'#default_value' => variable_get('textimage_image_margin',10),
'#size' => 5,
'#maxlength' => 4,
'#description' => t('Set a distance between the Captcha letters and the edges of the image.'),
'#validate' => array("_textimage_number_validate" => array("textimage_image_margin")),
);
$form['info'] = array(
'#type' => 'fieldset', '#title' => t('Image and font information'),
'#collapsible' => TRUE, '#collapsed' => FALSE
);
if (isset($fonts_path)) {
$imagefontinfo .= t('Number of fonts found: ').count(_textimage_font_list());
}
if (isset($images_path)) {
$imagefontinfo .= '
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