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<?php
// +-----------------------------------------------------------------------+
// | Piwigo - a PHP based photo gallery |
// +-----------------------------------------------------------------------+
// | Copyright(C) 2008-2011 Piwigo Team http://piwigo.org |
// | Copyright(C) 2003-2008 PhpWebGallery Team http://phpwebgallery.net |
// | Copyright(C) 2002-2003 Pierrick LE GALL http://le-gall.net/pierrick |
// +-----------------------------------------------------------------------+
// | This program is free software; you can redistribute it and/or modify |
// | it under the terms of the GNU General Public License as published by |
// | the Free Software Foundation |
// | |
// | This program 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 |
// | General Public License for more details. |
// | |
// | You should have received a copy of the GNU General Public License |
// | along with this program; if not, write to the Free Software |
// | Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, |
// | USA. |
// +-----------------------------------------------------------------------+
/*
* Returns the name of a photo according to its name and its filename.
* @param name string
* @param filename string
* @return string
*/
function get_image_name($name, $filename)
{
if (!empty($name))
{
return $name;
}
else
{
return get_name_from_file($filename);
}
}
/*
* @param element_info array containing element information from db;
* at least 'id', 'path', 'has_high' should be present
*/
function get_high_path($element_info)
{
$path = get_high_location($element_info);
if (!empty($path) and !url_is_remote($path) )
{
$path = PHPWG_ROOT_PATH.$path;
}
return $path;
}
/**
* @param element_info array containing element information from db;
* at least 'id', 'path', 'has_high' should be present
*/
function get_high_url($element_info)
{
$url = get_high_location($element_info);
if (!empty($url) and !url_is_remote($url) )
{
$url = embellish_url(get_root_url().$url);
}
// plugins want another url ?
return trigger_event('get_high_url', $url, $element_info);
}
/**
* @param element_info array containing element information from db;
* at least 'id', 'path', 'has_high' should be present
*/
function get_high_location($element_info)
{
$location = '';
if ($element_info['has_high'] == 'true')
{
$pi = pathinfo($element_info['path']);
$location=$pi['dirname'].'/pwg_high/'.$pi['basename'];
}
return trigger_event( 'get_high_location', $location, $element_info);
}
/*
* get slideshow default params into array
*
* @param void
*
* @return slideshow default values into array
*/
function get_default_slideshow_params()
{
global $conf;
return array(
'period' => $conf['slideshow_period'],
'repeat' => $conf['slideshow_repeat'],
'play' => true,
);
}
/*
* check and correct slideshow params from array
*
* @param array of params
*
* @return slideshow corrected values into array
*/
function correct_slideshow_params($params = array())
{
global $conf;
if ($params['period'] < $conf['slideshow_period_min'])
{
$params['period'] = $conf['slideshow_period_min'];
}
else if ($params['period'] > $conf['slideshow_period_max'])
{
$params['period'] = $conf['slideshow_period_max'];
}
return $params;
}
/*
* Decode slideshow string params into array
*
* @param string params like ""
*
* @return slideshow values into array
*/
function decode_slideshow_params($encode_params = null)
{
global $conf;
$result = get_default_slideshow_params();
if (is_numeric($encode_params))
{
$result['period'] = $encode_params;
}
else
{
$matches = array();
if (preg_match_all('/([a-z]+)-(\d+)/', $encode_params, $matches))
{
$matchcount = count($matches[1]);
for ($i = 0; $i < $matchcount; $i++)
{
$result[$matches[1][$i]] = $matches[2][$i];
}
}
if (preg_match_all('/([a-z]+)-(true|false)/', $encode_params, $matches))
{
$matchcount = count($matches[1]);
for ($i = 0; $i < $matchcount; $i++)
{
$result[$matches[1][$i]] = get_boolean($matches[2][$i]);
}
}
}
return correct_slideshow_params($result);
}
/*
* Encode slideshow array params into array
*
* @param array params
*
* @return slideshow values into string
*/
function encode_slideshow_params($decode_params = array())
{
global $conf;
$params = array_diff_assoc(correct_slideshow_params($decode_params), get_default_slideshow_params());
$result = '';
foreach ($params as $name => $value)
{
// boolean_to_string return $value, if it's not a bool
$result .= '+'.$name.'-'.boolean_to_string($value);
}
return $result;
}
// The get_picture_size function return an array containing :
// - $picture_size[0] : final width
// - $picture_size[1] : final height
// The final dimensions are calculated thanks to the original dimensions and
// the maximum dimensions given in parameters. get_picture_size respects
// the width/height ratio
function get_picture_size( $original_width, $original_height,
$max_width, $max_height )
{
$width = $original_width;
$height = $original_height;
$is_original_size = true;
if ( $max_width != "" )
{
if ( $original_width > $max_width )
{
$width = $max_width;
$height = floor( ( $width * $original_height ) / $original_width );
}
}
if ( $max_height != "" )
{
if ( $original_height > $max_height )
{
$height = $max_height;
$width = floor( ( $height * $original_width ) / $original_height );
$is_original_size = false;
}
}
if ( is_numeric( $max_width ) and is_numeric( $max_height )
and $max_width != 0 and $max_height != 0 )
{
$ratioWidth = $original_width / $max_width;
$ratioHeight = $original_height / $max_height;
if ( ( $ratioWidth > 1 ) or ( $ratioHeight > 1 ) )
{
if ( $ratioWidth < $ratioHeight )
{
$width = floor( $original_width / $ratioHeight );
$height = $max_height;
}
else
{
$width = $max_width;
$height = floor( $original_height / $ratioWidth );
}
$is_original_size = false;
}
}
$picture_size = array();
$picture_size[0] = $width;
$picture_size[1] = $height;
return $picture_size;
}
?>
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