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Rename 'kohana' to 'system' to conform to the Kohana filesystem layout. I'm comfortable with us not clearly drawing the distinction about the fact that it's Kohana.

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Bharat Mediratta
2009-05-27 15:11:53 -07:00
parent 00f47d4ddd
commit 12fe58d997
144 changed files with 1 additions and 1 deletions
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81
system/libraries/drivers/Captcha/Basic.php Normal file
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<?php defined('SYSPATH') OR die('No direct access allowed.');
/**
* Captcha driver for "basic" style.
*
* $Id: Basic.php 3769 2008-12-15 00:48:56Z zombor $
*
* @package Captcha
* @author Kohana Team
* @copyright (c) 2007-2008 Kohana Team
* @license http://kohanaphp.com/license.html
*/
class Captcha_Basic_Driver extends Captcha_Driver {
/**
* Generates a new Captcha challenge.
*
* @return string the challenge answer
*/
public function generate_challenge()
{
// Complexity setting is used as character count
return text::random('distinct', max(1, Captcha::$config['complexity']));
}
/**
* Outputs the Captcha image.
*
* @param boolean html output
* @return mixed
*/
public function render($html)
{
// Creates $this->image
$this->image_create(Captcha::$config['background']);
// Add a random gradient
if (empty(Captcha::$config['background']))
{
$color1 = imagecolorallocate($this->image, mt_rand(200, 255), mt_rand(200, 255), mt_rand(150, 255));
$color2 = imagecolorallocate($this->image, mt_rand(200, 255), mt_rand(200, 255), mt_rand(150, 255));
$this->image_gradient($color1, $color2);
}
// Add a few random lines
for ($i = 0, $count = mt_rand(5, Captcha::$config['complexity'] * 4); $i < $count; $i++)
{
$color = imagecolorallocatealpha($this->image, mt_rand(0, 255), mt_rand(0, 255), mt_rand(100, 255), mt_rand(50, 120));
imageline($this->image, mt_rand(0, Captcha::$config['width']), 0, mt_rand(0, Captcha::$config['width']), Captcha::$config['height'], $color);
}
// Calculate character font-size and spacing
$default_size = min(Captcha::$config['width'], Captcha::$config['height'] * 2) / (strlen($this->response) + 1);
$spacing = (int) (Captcha::$config['width'] * 0.9 / strlen($this->response));
// Draw each Captcha character with varying attributes
for ($i = 0, $strlen = strlen($this->response); $i < $strlen; $i++)
{
// Use different fonts if available
$font = Captcha::$config['fontpath'].Captcha::$config['fonts'][array_rand(Captcha::$config['fonts'])];
// Allocate random color, size and rotation attributes to text
$color = imagecolorallocate($this->image, mt_rand(0, 150), mt_rand(0, 150), mt_rand(0, 150));
$angle = mt_rand(-40, 20);
// Scale the character size on image height
$size = $default_size / 10 * mt_rand(8, 12);
$box = imageftbbox($size, $angle, $font, $this->response[$i]);
// Calculate character starting coordinates
$x = $spacing / 4 + $i * $spacing;
$y = Captcha::$config['height'] / 2 + ($box[2] - $box[5]) / 4;
// Write text character to image
imagefttext($this->image, $size, $angle, $x, $y, $color, $font, $this->response[$i]);
}
// Output
return $this->image_render($html);
}
} // End Captcha Basic Driver Class