Suporte phpBB

Código: Selecionar todos

##############################################################
## Título do MOD: Resize sent avatars
## Autor do MOD: Hołek < holek@toolserver.org > (Michał Połtyn) http://toolserver.org/~holek/
## Descrição: Você não está cansado dos erros que o phpBB apresenta quando
##                 tenta fazer o upload de um novo avatar por causa de seus pixels?
##                  Por quê o phpBB não o redimensiona por ele mesmo?
##                  Mas agora pode! Mesmo que o tamanho da imagem exceda o limite
##                  estabelecido pelo fórum, o phpBB vai automaticamente realizar o upload
##                  e redimensionar seu avatar com sucesso!!!
## MOD Version: 1.1.1
##
## Nível de Instalação: Fácil
## Tempo de instalação: 1 minuto
## Arquivos para editar: includes/functions_upload.php
## Arquivos incluidos: nenhum.
## Licensa: http://opensource.org/licenses/gpl-license.php GNU General Public License v2
##############################################################
## MOD History:
##
## 2009-10-18 - Version 1.1.1
##     - fixed minor bug, causing wrong resizing method
##       to be applied to pallette-based images
##       (thanks to autinhyeu)
## 2009-10-18 - Version 1.1.0
##     - support for animated GIFs
##     - using Imagemagick if available
## 2009-10-17 - Version 1.0.0
##
##############################################################
## ANTES DE FAZER ESTA ALTERAÇÃO, RECOMENDAMOS QUE FAÇÃ O BACKUP DO SEU FÓRUM.
##############################################################

#
#----[ ABRA ]-----------------------------------------------------------
#

includes/function_upload.php

#
#----[ ENCONTRE ]-----------------------------------------------------------
#

      if (!$this->upload->valid_dimensions($this))
      {
         $this->error[] = sprintf($user->lang[$this->upload->error_prefix . 'WRONG_SIZE'], $this->upload->min_width, $this->upload->min_height, $this->upload->max_width, $this->upload->max_height, $this->width, $this->height);
         return false;
      }

      return true;
   }

#
#----[ SUBSTITUA POR ]---------------------------------------------------
#

      if (!$this->upload->valid_dimensions($this))
      {
         $valid = $this->create_thumb();
         
         if (!$valid)
         {
            $this->error[] = sprintf($user->lang[$this->upload->error_prefix . 'WRONG_SIZE'], $this->upload->min_width, $this->upload->min_height, $this->upload->max_width, $this->upload->max_height, $this->width, $this->height);

            return false;
         }
      }

      return true;
   }

   /**
   * Create a thumb if uploaded image is too big.
   * This function was based mainly on MediaWiki's thumbnail creating process
   * and create_thumbnail function in functions_posting.php
   * @source MediaWiki
   */
   function create_thumb()
   {
      global $config;

      if ($this->width > $this->height)
      {
         $thumb_width = $this->upload->max_width;
         $thumb_height = $this->height*($this->upload->max_height/$this->width);
      }
      else if ($this->width < $this->height)
      {
         $thumb_width = $this->width*($this->upload->max_width/$this->height);
         $thumb_height = $this->upload->max_height;
      }
      else /* $this->width == $this->height */
      {
         $thumb_width = $this->upload->max_width;
         $thumb_height = $this->upload->max_height;
      }

      // Only use imagemagick if defined and the passthru function not disabled
      if ($config['img_imagick'] && function_exists('passthru'))
      {
         $quality = '';
         $sharpen = '';
         $frame = '';
         $animation = '';
         if ( $this->mimetype == 'image/jpeg' )
         {
            $quality = '-quality 80'; // 80%
            /** Reduction in linear dimensions below which sharpening will be enabled */
            if ( ( $thumb_width + $thumb_height ) / ( $this->width + $this->height ) < 0.85 )
            {
               $sharpen = '-sharpen 0x0.4';
            }
         }
         elseif ($this->mimetype == 'image/png')
         {
            $quality = '-quality 95'; // zlib 9, adaptive filtering
         }
         elseif ($this->mimetype == 'image/gif')
         {
            /**
             * Force thumbnailing of animated GIFs above this size to a single
             * frame instead of an animated thumbnail. ImageMagick seems to
             * get real unhappy and doesn't play well with resource limits. :P
             * Defaulting to 1 megapixel (1000x1000)
             */
            if($this->width * $this->height > 1.0e6)
            {
               // Extract initial frame only
               $frame = '[0]';
            }
            else
            {
               // Coalesce is needed to scale animated GIFs properly (MediaWiki bug 1017).
               $animation = ' -coalesce ';
            }
         }
         # Specify white background color, will be used for transparent images
         # in Internet Explorer/Windows instead of default black.

         # Note, we specify "-size {$this->width}" and NOT "-size {$this->width}x{$this->height}".
         # It seems that ImageMagick has a bug wherein it produces thumbnails of
         # the wrong size in the second case.

         if (substr($config['img_imagick'], -1) !== '/')
         {
            $config['img_imagick'] .= '/';
         }
         $cmd  =
            escapeshellcmd($config['img_imagick']) . 'convert' . ((defined('PHP_OS') && preg_match('#^win#i', PHP_OS)) ? '.exe' : '') .
            " {$quality} -background white -size {$this->width} ".
            escapeshellarg($this->destination_file . $frame) .
            $animation .
            // For the -resize option a "!" is needed to force exact size,
            // or ImageMagick may decide your ratio is wrong and slice off
            // a pixel.
            ' -thumbnail ' . escapeshellarg( "{$thumb_width}x{$thumb_height}!" ) .
            " -depth 8 $sharpen " .
            escapeshellarg($this->destination_file) . ' 2>&1';

         @passthru($cmd);

         // after converting let's check the file dimensions again
         if (($this->image_info = @getimagesize($this->destination_file)) !== false)
         {
            $this->width = $this->image_info[0]; // the _real_ width
            $this->height = $this->image_info[1]; // the _real_ height
            if ($this->upload->valid_dimensions($this))
            {
               return true;
            }
         }
      }
      if (extension_loaded('gd'))
      {
         /* This code is greatly based on MediaWiki's thumbnail generation process */
         $typemap = array(
            'image/gif'          => array( 'imagecreatefromgif',  'palette',   'imagegif'  ),
            'image/jpeg'         => array( 'imagecreatefromjpeg', 'truecolor', array( __CLASS__, 'imagejpegwrapper' ) ),
            'image/png'          => array( 'imagecreatefrompng',  'bits',      'imagepng'  ),
            'image/vnd.wap.wbmp' => array( 'imagecreatefromwbmp', 'palette',   'imagewbmp'  ),
            'image/xbm'          => array( 'imagecreatefromxbm',  'palette',   'imagexbm'  ),
         );
         if (!isset( $typemap[$this->mimetype] ))
         {
            return false;
         }

         list($loader, $color_style, $save_type) = $typemap[$this->mimetype];
      
         if (!function_exists($loader))
         {
            return false;
         }
         $src_image = call_user_func( $loader, $this->destination_file );
         $thumb = imagecreatetruecolor($thumb_width, $thumb_height);

         // Initialise the destination image to transparent instead of
         // the default solid black, to support PNG and GIF transparency nicely
         $background = imagecolorallocate( $thumb, 0, 0, 0 );
         imagecolortransparent( $thumb, $background );
         imagealphablending( $thumb, false );
      
         if( $color_style == 'palette' ) {
            // Don't resample for paletted GIF images.
            // It may just uglify them, and completely breaks transparency.
            imagecopyresized( $thumb, $src_image,
               0,0,0,0,
               $thumb_width, $thumb_height, $this->width, $this->height );
         } else {
            imagecopyresampled( $thumb, $src_image,
               0,0,0,0,
               $thumb_width, $thumb_height, $this->width, $this->height );
         }

         imagesavealpha( $thumb, true );

         call_user_func( $save_type, $thumb, $this->destination_file );
         imagedestroy($thumb);
         imagedestroy($src_image);
         $this->width = $thumb_width;
         $this->height = $thumb_height;
         return true;
      }
      return false;
   }

   static function imagejpegwrapper( $dst_image, $thumb_path ) {
      imageinterlace( $dst_image );
      imagejpeg( $dst_image, $thumb_path, 95 );
   }

#
#-----[ SALVE/FECHE TODOS OS ARQUIVOS ]------------------------------------------
#
# EoM

Código: Selecionar todos

function create_thumb()
               {
                    global $config;

                    if ($this->width > $this->height)
                          {
                              // need to calculate aspect ratio of this image
                              $aspectRatio = $this->width / $this->height;
                              $thumb_width = $this->upload->max_width;
                              $thumb_height = $thumb_width / $aspectRatio;
                          }
               else if ($this->width height)
                          {
                              $aspectRatio = $this->height / $this->width;
                              $thumb_height = $this->upload->max_height;
                              $thumb_width = $thumb_height / $aspectRatio;
                              // check if thumb width is larger than max_width because if it is it will break layout
                                             if($thumb_width > $this->upload->max_width){
                                                            $thumb_width = $this->upload->max_width;
                                                            $thumb_height = $thumb_width * $aspectRatio;
                           }
               }