Forum PHP.pl

<?php
/**
* License
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
**/
/**
* @author Krzysztof (Balon) Jagiełło <balonyo@gmail.com>
* @copyright 2007 Krzysztof Jagiełło.
* @version 1.0
*/

class Token {
    
    /** Kod na tokenie */
    var $_tokenText;

    /** Adres folderu czcionek */
    var $_fontDir = '';

    /** Nazwy czcionek */
    var $_fontFiles = array(
        'georgia.TTF'
    );

    /** Typ obrazka */
    var $_imgType = 'gif';

    /** Długość kodu na tokenie */
    var $_length;

    /** Kolor tła */
    var $_backColor = '#ffffff';

    /** Kolor czcionki */
    var $_fontColor = '#A61D09';

    /** Kolor elementów tłą */
    var $_elemsColor = '#E1E1E1';

    /** Szerokość tokena */
    var $_width;

    /** Wyskość tokena */
    var $_height = 25;

    /** Obiekt tła */
    var $_bgObject;

    /** Obrazek tokena */
    var $_image;

    /** Nazwa klucza sesji z tokenem */
    var $_tokenId = 'token';

    /** Dozwolone rozszerzenia */
    var $_allowedTypes = array(
        'gif', 'jpg', 'png'
    );


    
    /** Komunikaty błędów */
    var $_errorMsg = array(
      'wrong_color'   => 'Format koloru (%s) jest nieprawidłowy.',
      'wrong_object'  => 'Podany obiekt nie istnieje.',
      'wrong_img_type'=> 'Podany typ ("%s") jest nieprawidłowy.',
      'wrong_file'        => 'Czcionka "%s" nie istnieje .'
    );

    /**
     * Konstruktor klasy
     *
     * @param integer $length - długość tekstu na tokenie
     */
    
    function randcolor()
    {
    $r   = rand(10,195);
    $g = rand(10,195);
    $b  = rand(10,195);
    return imagecolorallocate( $this->_image, $r, $g, $b);
    }
    
    function Token( $length, $bgObject ){
        if($bgObject=='rand') {
        $Rand = rand(1,3);
        switch ($Rand) {
        case 1:
        $bgObject = new TokenBackground_Dots;
        break;
        case 2:
        $bgObject = new TokenBackground_Slashes;
        break;
        case 3:
        $bgObject = new TokenBackground_Grid;
        break;
        }
        }
        $this->_length = $length;
        $this->_tokenText = substr(md5(uniqid(time())), 0 - $length);
        $this->_width = $length * 15 + 10;
        $this->_image = imagecreate( $this->_width, $this->_height);
        if( !is_object( $bgObject ) )
          trigger_error( $this->_errorMsg['wrong_object'], E_USER_WARNING );
        $this->_bgObject = $bgObject;
    }

    /**
     * Tworzy token, zapisuje go w sesji i wyświetla.
     */
    function getToken(){
        // kolorki
        $this->_backColor = $this->MakeColor( $this->_image, $this->_backColor );
        $this->_fontColor = $this->MakeColor( $this->_image, $this->_fontColor );
        $this->_elemsColor = $this->MakeColor( $this->_image, $this->_elemsColor );

        $this->Background();
        $this->Text();

        $_SESSION[$this->_tokenId] = $this->_tokenText;

        if( !in_array( $this->_imgType, $this->_allowedTypes ) )
          trigger_error( sprintf( $this->_errorMsg['wrong_img_type'], $this->_imgType ), E_USER_ERROR );
        header( 'Content-type: image/' . $this->_imgType );
        $this->Display();
    }

    /**
     * Tworzy tekst na tokenie
     */
    function Text(){
        for($i = 0; $i < strlen($this->_tokenText); $i++){

     imagettftext( $this->_image, rand(14, 16), rand(-10, 10), rand(3, 5) + $i * 15, 18 + rand(-3, 3), $this->randcolor(), $this->getFontDir() . $this->_fontFiles[rand(0,count($this->_fontFiles)-1)], $this->_tokenText{$i});
    }
    return true;
    }

    /**
     * Tworzy tło korzystając z podanej klasy tła
     *
     * @return true
     */
    function Background(){
        $this->_bgObject->process( &$this->_image, get_object_vars( $this ) );
        return true;
    }

    /**
     * Wyświetla token w wybranym formacie
     */
    function Display(){
        if( !in_array( $this->_imgType, $this->_allowedTypes ) )
          trigger_error( sprintf( $this->_errorMsg['wrong_img_type'], $this->_imgType ), E_USER_ERROR );
        call_user_func( 'image' . $this->_imgType, $this->_image );
    }

    /**
     * Dodaje czcionki to tablicy. Są one potem losowo używane w tokenie.
     */
    function assignFonts(){
        $fonts = func_get_args();
        foreach( $fonts as $font ){
            if( !file_exists( $this->getFontDir() . $font ) )
              trigger_error( sprintf( $this->_errorMsg['wrong_file'], $font ), E_USER_ERROR );
            else
              $this->_fontsFiles[] = $font;
        }
    }

    /**
     * Zwraca katalog z czcionkami
     */
    function getFontDir(){
        return $this->_fontDir == '' ? '' : $this->_fontDir . '/';
    }

    /**
     * Zwraca kolor dla obrazka
     *
     * @param resource $img
     * @param string $color - kolor w formacie hexagonalny
     * @return integer
     */
    function MakeColor( $img, $color ){
        if( !preg_match('/^[#]{0,1}[a-f0-9]{6}$/i', $color ) )
          trigger_error( sprintf( $this->_errorMsg['wrong_color'], $color ), E_USER_ERROR );

      $color = str_replace('#', '', $color);
      $return = array(
        'r' => hexdec(substr($color, 0, 2)),
        'g' => hexdec(substr($color, 2, 2)),
        'b' => hexdec(substr($color, 4, 2))
      );
      return imagecolorallocate( $img, $return['r'], $return['g'], $return['b']);
    }
}

class TokenBackground_Dots {
    function process( $image, $params ){
        $pts = array();
      for($i = 0; $i < round($params['_width'] / 1.5); $i++)    {
        $x = rand(0, $params['_width'] );
        $y = rand(0, $params['_height'] );

          if( !in_array( $x.'_'.$y, $pts ) ){
            imageellipse( $image, $x, $y, rand(2, 7), rand(3, 6), $params['_elemsColor'] );
            $pts[] = $x.'_'.$y;
          }
          else {
            $i--;
          }
        }
  }
}

class TokenBackground_Slashes {
    function process( $image, $params ){
        $step = 5;
        for($i = 0; $i < round($params['_width']) + ($step*10); $i+= $step)    {
        imageline( $image, $i, 0, 0, $i, $params['_elemsColor'] );
        }
  }
}

class TokenBackground_Grid {
    function process( $image, $params ){
        for($i = 0; $i < round($params['_width']); $i+= 5)    {
        // poziome linie
        imageline( $image, 0, $i, $params['_width'], $i, $params['_elemsColor'] );
        // pionowe linie
        imageline( $image, $i, 0, $i, $params['_height'], $params['_elemsColor'] );
      }
  }
}

$token = new Token(6, 'rand' );
$token->getToken();
?>