convert -size 300x300 \
    photo.jpg \
    -thumbnail x200 \
    -resize '200x<' \
    -resize 50% \
    -gravity center \
    -crop 100x100+0+0 \
    +repage \
    thumbnail/TN-photo.jpg

{if !empty($thumbnails)}
<ul class="thumbnails">
{foreach from=$thumbnails item=thumbnail}
  <li>
  <span class="wrap1">
    <span class="wrap2">
{php}
        $thumbnail = $this->get_template_vars('thumbnail');
        $tn_size = @getimagesize($thumbnail['TN_SRC']);
        $tn_size[2] = abs(floor(($tn_size[0] - $tn_size[1])/2)); 
        $tn_size[3] = min($tn_size[0], $tn_size[1], 112); 
        $tn_size[5] = 152 - $tn_size[3];
        $tn_size[5] = abs(floor($tn_size[5] / 2)); 
        if ( $tn_size[0] > $tn_size[1] ) { /* Landscape */
        $tn_size[4] = '0px '.($tn_size[2]+$tn_size[3]-1).'px '.($tn_size[3]-1).'px '.$tn_size[2].'px'; 
        $tn_size[2] = 'top: 0px; left: 0px;'; }
        else { /* Portrait */
        $tn_size[4] = $tn_size[2].'px '.($tn_size[3]-1).'px '.($tn_size[2]+$tn_size[3]-1).'px 0px'; 
        $tn_size[2] = 'top:  -'. $tn_size[5] .'px; left: '. $tn_size[5] .'px;'; }
        $this->assign('clip', $tn_size[4]);
        $this->assign('side', $tn_size[3]);
        $this->assign('shift', $tn_size[2]);
{/php}
    <a href="{$thumbnail.URL}">
      <div style="position: relative; width:{$side}px; height:{$side}px;">
         <div style="position: absolute; clip: rect({$clip}); {$shift}">
          <img class="thumbnail" src="{$thumbnail.TN_SRC}" alt="{$thumbnail.TN_ALT}"
          title="{$thumbnail.TN_TITLE}" style="top: 0px;" />
        </div>
      </div>
    </a>
    </span>
    <span class="thumbLegend">
    {if isset($thumbnail.NAME)}{$thumbnail.NAME}{/if}
    {$thumbnail.ICON_TS}
    {if isset($thumbnail.NB_COMMENTS)}
    <span class="{if 0==$thumbnail.NB_COMMENTS}zero {/if}nb-comments">
    <br /> 
    {$pwg->l10n_dec('%d comment', '%d comments',$thumbnail.NB_COMMENTS)}
    </span>
    {/if}

    {if isset($thumbnail.NB_HITS)}
    <span class="{if 0==$thumbnail.NB_HITS}zero {/if}nb-hits">
    <br />
    {$pwg->l10n_dec('%d hit', '%d hits',$thumbnail.NB_HITS)}
    </span>
    {/if}
    </span>
  </span>
  </li>
{/foreach}
</ul>
{/if}