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Joomla layouts to generate thumbnails on the fly
<?php
/**
* @package Joomla.Site
* @subpackage Layout
*
* @copyright Copyright (C) 2005 - 2015 Open Source Matters, Inc. All rights reserved.
* @license GNU General Public License version 2 or later; see LICENSE.txt
*/
defined('_JEXEC') or die;
extract($displayData);
/**
* Layout variables
*
* @var stdClass $article Article as it comes from joomla models/helpers
* @var array $options Array with options. Available options:
* 'resolution' : Resolution of the thumbnail
* 'force_png' : Convert always to PNG for transparent backgrounds
* 'force_rewrite' : Force thumbnail regeneration
* 'thumb_method' : Method to use to create the thumbnails. See JImage
*/
$layoutOptions = empty($options) ? new JInput : new JInput($options);
$images = json_decode($article->images);
// Intro image available
if (!empty($images->image_intro))
{
$imageUrl = $images->image_intro;
$imageAlt = $images->image_intro_alt;
}
// Full text image available
elseif (!empty($images->image_fulltext))
{
$imageUrl = $images->image_fulltext;
$imageAlt = $images->image_fulltext_alt;
}
// Nothing to display
else
{
return;
}
$resolution = $layoutOptions->get('resolution', '350x250');
// A thumbnail has been required
if ($resolution)
{
$thumbUrl = JLayoutHelper::render(
'image.thumbnail',
array(
'imageUrl' => $imageUrl,
'options' => $options
)
);
if ($thumbUrl)
{
$imageUrl = $thumbUrl;
}
}
?>
<img src="<?php echo $imageUrl; ?>" alt="<?php echo $imageAlt; ?>" />
<?php
/**
* @package Joomla.Site
* @subpackage Layout
*
* @copyright Copyright (C) 2005 - 2015 Open Source Matters, Inc. All rights reserved.
* @license GNU General Public License version 2 or later; see LICENSE.txt
*/
defined('_JEXEC') or die;
extract($displayData);
/**
* Layout variables
*
* @var array $imageUrl Url of the source image
* @var array $options Array with options. Available options:
* 'resolution' : Resolution of the thumbnail
* 'force_png' : Convert always to PNG for transparent backgrounds
* 'force_rewrite' : Force thumbnail regeneration
* 'thumb_method' : Method to use to create the thumbnails. See JImage
*/
$layoutOptions = empty($options) ? new JInput : new JInput($options);
// Generate image path from its URL
$imagePath = JPATH_SITE . '/' . ltrim($imageUrl, '/');
// Cannot create the thumb
if (!file_exists($imagePath))
{
echo $imageUrl;
return;
}
// Layout options
$resolution = $layoutOptions->get('resolution', '450x350');
$forcePng = $layoutOptions->getBoolean('force_png', false);
$rewriteThumb = $layoutOptions->getBoolean('force_rewrite', false);
$thumbMethod = $layoutOptions->getInt('thumb_method', JImage::SCALE_INSIDE);
$fileInfo = pathinfo($imagePath);
$thumbPath = dirname($imagePath) . '/thumbs/' . $resolution . '/' . $fileInfo['filename'] . '.png';
// Thumb already exists
if (!$rewriteThumb && file_exists($thumbPath))
{
echo str_replace(JPATH_SITE, JUri::root(true), $thumbPath);
return;
}
// Source of the png file if we have to force PNG thumbnails
$pngPath = dirname($imagePath) . '/' . $fileInfo['filename'] . '.png';
if ($forcePng && $fileInfo['extension'] != 'png' && !file_exists($pngPath))
{
$pngImage = imagecreatefromstring(file_get_contents($imagePath));
imagepng($pngImage, $pngPath);
$jimage = new JImage($pngPath);
}
else
{
$jimage = new JImage($imagePath);
}
try
{
$thumbs = $jimage->generateThumbs(array($resolution));
}
catch (Exception $e)
{
$thumbs = array();
}
if (!$thumbs)
{
echo $imageUrl;
return;
}
// Try to create the thumb folder
if (!is_dir(dirname($thumbPath)) && !mkdir(dirname($thumbPath), 0755, true))
{
echo $imageUrl;
return;
}
$thumbs[0]->toFile($thumbPath, JImage::getImageFileProperties($jimage->getPath())->type);
echo str_replace(JPATH_SITE, JUri::root(true), $thumbPath);
<?php
/**
* @package Joomla.Site
* @subpackage Layout
*
* @copyright Copyright (C) 2005 - 2015 Open Source Matters, Inc. All rights reserved.
* @license GNU General Public License version 2 or later; see LICENSE.txt
*/
defined('_JEXEC') or die;
// More descriptive name
$article = $displayData;
// Our article will only have a link if it's required so it's easier to check in our HTML
if ($article->params->get('link_titles') && $article->params->get('access-view'))
{
$link = JRoute::_(ContentHelperRoute::getArticleRoute($article->slug, $article->catid, $article->language));
}
?>
<div class="item-image">
<?php if ($link) : ?>
<a href="<?php echo $link; ?>" class="thumbnail">
<?php endif; ?>
<?php
echo JLayoutHelper::render(
'com_content.article.image',
array(
'article' => $article,
'options' => array(
'resolution' => '450x350'
)
)
)
?>
<?php if ($link) : ?>
</a>
<?php endif; ?>
</div>
@phproberto

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@phproberto phproberto commented Oct 23, 2015

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