<?php

// vim: set expandtab tabstop=4 shiftwidth=4 softtabstop=4:

/**

 * Image rule end renderer for Xhtml

 *

 * PHP versions 4 and 5

 *

 * @category   Text

 * @package    Text_Wiki

 * @author     Paul M. Jones <pmjones@php.net>

 * @license    http://www.gnu.org/copyleft/lesser.html  LGPL License 2.1

 * @version    CVS: $Id: Image.php,v 1.16 2006/02/10 23:07:03 toggg Exp $

 * @link       http://pear.php.net/package/Text_Wiki

 */

/**

 * This class inserts an image in XHTML.

 *

 * @category   Text

 * @package    Text_Wiki

 * @author     Paul M. Jones <pmjones@php.net>

 * @license    http://www.gnu.org/copyleft/lesser.html  LGPL License 2.1

 * @version    Release: @package_version@

 * @link       http://pear.php.net/package/Text_Wiki

 */

class Text_Wiki_Render_Xhtml_Image extends Text_Wiki_Render {

    var $conf = array(

        'base' => '/',

        'url_base' => null,

        'css'  => null,

        'css_link' => null

    );

    /**

    *

    * Renders a token into text matching the requested format.

    *

    * @access public

    *

    * @param array $options The "options" portion of the token (second

    * element).

    *

    * @return string The text rendered from the token options.

    *

    */

    function token($options)

    {

        // note the image source

        $src = $options['src'];

        // is the source a local file or URL?

        if (strpos($src, '://') === false) {

            // the source refers to a local file.

            // add the URL base to it.

            $src = $this->getConf('base', '/') . $src;

        }

        // stephane@metacites.net

        // is the image clickable?

        if (isset($options['attr']['link'])) {

            // yes, the image is clickable.

            // are we linked to a URL or a wiki page?

            if (strpos($options['attr']['link'], '://')) {

                // it's a URL, prefix the URL base

                $href = $this->getConf('url_base') . $options['attr']['link'];

            } else {

                // it's a WikiPage; assume it exists.

                /** @todo This needs to honor sprintf wikilinks (pmjones) */

                /** @todo This needs to honor interwiki (pmjones) */

                /** @todo This needs to honor freelinks (pmjones) */

                $href = $this->wiki->getRenderConf('xhtml', 'wikilink', 'view_url') .

                    $options['attr']['link'];

            }

        } else {

            // image is not clickable.

            $href = null;

        }

        // unset so it won't show up as an attribute

        unset($options['attr']['link']);

        // stephane@metacites.net -- 25/07/2004

        // we make up an align="center" value for the <img> tag.

        if (isset($options['attr']['align']) &&

            $options['attr']['align'] == 'center') {

            // unset so it won't show up as an attribute

            unset($options['attr']['align']);

            // make sure we have a style attribute

            if (! isset($options['attr']['style'])) {

                // no style, set up a blank one

                $options['attr']['style'] = '';

            } else {

                // style exists, add a space

                $options['attr']['style'] .= ' ';

            }

            // add a "center" style to the existing style.

            $options['attr']['style'] .=

                'display: block; margin-left: auto; margin-right: auto;';

        }

        // stephane@metacites.net -- 25/07/2004

        // try to guess width and height

        if (! isset($options['attr']['width']) &&

            ! isset($options['attr']['height'])) {

            // does the source refer to a local file or a URL?

            if (strpos($src,'://')) {

                // is a URL link

                $imageFile = $src;

            } elseif ($src[0] == '.') {

            	// reg at dav-muz dot net -- 2005-03-07

				// is a local file on relative path.

				$imageFile = $src; # ...don't do anything because it's perfect!

			} else {

                // is a local file on absolute path.

                $imageFile = $_SERVER['DOCUMENT_ROOT'] . $src;

            }

            // attempt to get the image size

            $imageSize = @getimagesize($imageFile);

            if (is_array($imageSize)) {

                $options['attr']['width'] = $imageSize[0];

                $options['attr']['height'] = $imageSize[1];

            }

        }

        // start the HTML output

        $output = '<img src="' . $this->textEncode($src) . '"';

        // get the CSS class but don't add it yet

        $css = $this->formatConf(' class="%s"', 'css');

        // add the attributes to the output, and be sure to

        // track whether or not we find an "alt" attribute

        $alt = false;

        foreach ($options['attr'] as $key => $val) {

            // track the 'alt' attribute

            if (strtolower($key) == 'alt') {

                $alt = true;

            }

            // the 'class' attribute overrides the CSS class conf

            if (strtolower($key) == 'class') {

                $css = null;

            }

            $key = $this->textEncode($key);

            $val = $this->textEncode($val);

            $output .= " $key=\"$val\"";

        }

        // always add an "alt" attribute per Stephane Solliec

        if (! $alt) {

            $alt = $this->textEncode(basename($options['src']));

            $output .= " alt=\"$alt\"";

        }

        // end the image tag with the automatic CSS class (if any)

        $output .= "$css />";

        // was the image clickable?

        if ($href) {

            // yes, add the href and return

            $href = $this->textEncode($href);

            $css = $this->formatConf(' class="%s"', 'css_link');

            $output = "<a$css href=\"$href\">$output</a>";

        }

        return $output;

    }

}

?>