[Sommaire] [Imprimer]

   1  <?php
   2  class Text_Wiki_Render_Xhtml_Image extends Text_Wiki_Render {
   3  
   4      var $conf = array(
   5          'base' => '/',
   6          'css'  => null,
   7          'css_link' => null
   8      );
   9      
  10      
  11      /**
  12      * 
  13      * Renders a token into text matching the requested format.
  14      * 
  15      * @access public
  16      * 
  17      * @param array $options The "options" portion of the token (second
  18      * element).
  19      * 
  20      * @return string The text rendered from the token options.
  21      * 
  22      */
  23      
  24      function token($options)
  25      {
  26          // note the image source
  27          $src = $options['src'];
  28          
  29          // is the source a local file or URL?
  30          if (strpos($src, '://') === false) {
  31              // the source refers to a local file.
  32              // add the URL base to it.
  33              $src = $this->getConf('base', '/') . $src;
  34          }
  35          
  36          // stephane@metacites.net
  37          // is the image clickable? 
  38          if (isset($options['attr']['link'])) {
  39              // yes, the image is clickable.
  40              // are we linked to a URL or a wiki page?
  41              if (strpos($options['attr']['link'], '://')) {
  42                  // it's a URL
  43                  $href = $options['attr']['link'];
  44              } else {
  45                  // it's a WikiPage; assume it exists.
  46                  /** @todo This needs to honor sprintf wikilinks (pmjones) */
  47                  /** @todo This needs to honor interwiki (pmjones) */
  48                  /** @todo This needs to honor freelinks (pmjones) */
  49                  $href = $this->wiki->getRenderConf('xhtml', 'wikilink', 'view_url') .
  50                      $options['attr']['link'];
  51              }
  52          } else {
  53              // image is not clickable.
  54              $href = null;
  55          }
  56          // unset so it won't show up as an attribute
  57          unset($options['attr']['link']);
  58          
  59          // stephane@metacites.net -- 25/07/2004 
  60          // we make up an align="center" value for the <img> tag.
  61          if (isset($options['attr']['align']) &&
  62              $options['attr']['align'] == 'center') {
  63              
  64              // unset so it won't show up as an attribute
  65              unset($options['attr']['align']);
  66              
  67              // make sure we have a style attribute
  68              if (! isset($options['attr']['style'])) {
  69                  // no style, set up a blank one
  70                  $options['attr']['style'] = '';
  71              } else {
  72                  // style exists, add a space
  73                  $options['attr']['style'] .= ' ';
  74              }
  75              
  76              // add a "center" style to the existing style.
  77              $options['attr']['style'] .=
  78                  'display: block; margin-left: auto; margin-right: auto;';
  79          }
  80          
  81          // stephane@metacites.net -- 25/07/2004 
  82          // try to guess width and height
  83          if (! isset($options['attr']['width']) &&
  84              ! isset($options['attr']['height'])) {
  85              
  86              // does the source refer to a local file or a URL?
  87              if (strpos($src,'://')) {
  88                  // is a URL link
  89                  $imageFile = $src;
  90              } else {
  91                  // is a local file
  92                  $imageFile = $_SERVER['DOCUMENT_ROOT'] . $src;
  93              }
  94              
  95              // attempt to get the image size
  96              $imageSize = @getimagesize($imageFile);
  97              
  98              if (is_array($imageSize)) {
  99                  $options['attr']['width'] = $imageSize[0];
 100                  $options['attr']['height'] = $imageSize[1];
 101              }
 102              
 103          }
 104          
 105          // start the HTML output
 106          $output = '<img src="' . htmlspecialchars($src) . '"';
 107          
 108          // get the CSS class but don't add it yet
 109          $css = $this->formatConf(' class="%s"', 'css');
 110          
 111          // add the attributes to the output, and be sure to
 112          // track whether or not we find an "alt" attribute
 113          $alt = false;
 114          foreach ($options['attr'] as $key => $val) {
 115              
 116              // track the 'alt' attribute
 117              if (strtolower($key) == 'alt') {
 118                  $alt = true;
 119              }
 120              
 121              // the 'class' attribute overrides the CSS class conf
 122              if (strtolower($key) == 'class') {
 123                  $css = null;
 124              }
 125              
 126              $key = htmlspecialchars($key);
 127              $val = htmlspecialchars($val);
 128              $output .= " $key=\"$val\"";
 129          }
 130          
 131          // always add an "alt" attribute per Stephane Solliec
 132          if (! $alt) {
 133              $alt = htmlspecialchars(basename($options['src']));
 134              $output .= " alt=\"$alt\"";
 135          }
 136          
 137          // end the image tag with the automatic CSS class (if any)
 138          $output .= "$css />";
 139          
 140          // was the image clickable?
 141          if ($href) {
 142              // yes, add the href and return
 143              $href = htmlspecialchars($href);
 144              $css = $this->formatConf(' class="%s"', 'css_link');
 145              $output = "<a$css href=\"$href\">$output</a>";
 146          }
 147          
 148          return $output;
 149      }
 150  }
 151  ?>