Keep the page not redirected after login by Fancy Login?

I had the same idea and I managed to solve it. Here's how I did it:

1) In fancy_login.module replace the content of function fancy_login_form() with the content of user_login_block() from modules/user/user.module and replace the line

'#id' => 'user-login-form',

with

'#id' => 'user_login',

So the function should look something like this

function fancy_login_form()
{
  $form = array(
    '#action' => url($_GET['q'], array('query' => drupal_get_destination())),
    '#id' => 'user_login',
    '#validate' => user_login_default_validators(),
    '#submit' => array('user_login_submit'),
  );
  $form['name'] = array('#type' => 'textfield',
    '#title' => t('Username'),
    '#maxlength' => USERNAME_MAX_LENGTH,
    '#size' => 15,
    '#required' => TRUE,
  );
  $form['pass'] = array('#type' => 'password',
    '#title' => t('Password'),
    '#maxlength' => 60,
    '#size' => 15,
    '#required' => TRUE,
  );
  $form['submit'] = array('#type' => 'submit',
    '#value' => t('Log in'),
  );
  $items = array();
  if (variable_get('user_register', 1)) {
    $items[] = l(t('Create new account'), 'user/register', array('attributes' => array('title' => t('Create a new user account.'))));
  }
  $items[] = l(t('Request new password'), 'user/password', array('attributes' => array('title' => t('Request new password via e-mail.'))));
  $form['links'] = array('#value' => theme('item_list', $items));
  return $form;
}

2) Replace the function fancy_login_get_form() (in fancy_login.module) with

function fancy_login_get_form()
{
	$path = drupal_get_path('module', 'fancy_login');
	$image_path = url($path . '/images/ajax-loader.gif', array('absolute' => TRUE));
	$output = '<div id="fancy_login_login_box">';
	$output .= '<div id="fancy_login_form_contents">';
	$output .= '<a href="#" id="fancy_login_close_button">X</a>';
	$output .= drupal_get_form('fancy_login_form');
	$output .= '</div>';
	$output .= '<div id="fancy_login_ajax_loader"><img src="' . $image_path . '" alt="' . t('Loading') . '" /></div>';
	$output .= '</div>';
	return $output;
}

3) In fancy_login.js delete or comment the following line:

$("#fancy_login_login_box form").attr("action", $(this).attr("href"));

This works with Fancy Login 6.x-1.1-beta6 and Drupal 6.14

I'd like to add my voice to the original request to keep the user on the same page he started from after he logs in.

I tried Muscardinus edits but they did not work for me. I got the following error from my blocks list and the fancy login block did not show up anymore.

warning: Invalid argument supplied for foreach() in XXXXXXX/modules/block/block.module on line 248.

I love this module, but have basically the same issue - however i use the LoginDestination module. I'll have to stop using Fancy Login for now until it's compatible.

My solution is: in fancy_login.module I changed:

function fancy_login_block($op = 'list', $delta = 0, $edit = array())
{
global $user;
if ($op == "list")
{
$block = array();
$block[0]['info'] = t('Fancy Login Link');
return $block;
}
else{if($op == 'view' && !$user->uid && !$user->uid && !(arg(0) == 'user' && !is_numeric(arg(1))))
{ $destination = drupal_get_destination();
$block['subject'] = t('Login');
$block['content'] = l(t('Login'), 'user/login', array('query' => $destination));
return $block;
}
else{ $destination = drupal_get_destination();
$block['content'] = l(t('Log Out'), 'logout', array('query' => $destination));
$block['content'] .= l(t('Profile'), 'user');
return $block;
}
}
}

Yes, this is essential.

Anyway, I am not using the block, but constructing simple links in wherever (templates) I want with

l(t('Login'), 'user/login', array('query' => drupal_get_destination()))

and

l(t('Log Out'), 'logout', array('query' => drupal_get_destination()))

is just more than enough for now.

EDIT: Hmm, Pressflow 6.15 has problems when logging out, but not when logging in.

I've refined the code to enable this functionality. In the next release, which will happen in the next day or two, there will be a new setting in the settings page titled: 'Keep User on Same Page'. If this box is checked, the user will not be redirected upon login, and will remain on the same page from which they clicked the login link.

I've taken care of this using a combination of PHP and javascript. If the site is set to 'keep user on same page', the current page URL is then passed to the javascript function for the module. On page load, the module goes through and checks all the links, and if they don't already have a destination set on them, it sets the current page as the destination. This means that any links that already have a destination set on them will take a higher priority than this module.