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image_tag_processor.php
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Mon, Jun 30, 2:37 AM

image_tag_processor.php
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<?php
/**
* @version $Id: image_tag_processor.php 15601 2012-11-02 14:18:43Z alex $
* @package In-Portal
* @copyright Copyright (C) 1997 - 2011 Intechnic. All rights reserved.
* @license GNU/GPL
* In-Portal is Open Source software.
* This means that this software may have been modified pursuant
* the GNU General Public License, and as distributed it includes
* or is derivative of works licensed under the GNU General Public License
* or other free or open source software licenses.
* See http://www.in-portal.org/license for copyright notices and details.
*/
defined('FULL_PATH') or die('restricted access!');
class ImageTagProcessor extends kDBTagProcessor {
/**
* Prepares all image parameters as list block parameters (for easy usage)
*
* @param kDBList $object
* @param Array $block_params
* @return void
* @access protected
* @author Alex
*/
protected function PrepareListElementParams(&$object, &$block_params)
{
$image_url = $this->ImageSrc($block_params);
if ( !$image_url ) {
return ;
}
$parent_prefix = $this->Application->getUnitOption($object->Prefix, 'ParentPrefix');
$parent_item = $this->Application->recallObject($parent_prefix);
/* @var $parent_item kDBItem */
$block_params['img_path'] = $image_url;
$image_dimensions = $this->ImageSize($block_params);
$block_params['img_size'] = $image_dimensions ? $image_dimensions : ' width="' . $block_params['DefaultWidth'] . '"';
$block_params['alt'] = $object->GetField('AltName') ? $object->GetField('AltName') : htmlspecialchars($this->getItemTitle($parent_item), null, CHARSET);
$block_params['align'] = array_key_exists('align', $block_params) ? $block_params['align'] : 'left';
}
/**
* Returns value of object's title field
*
* @param kDBItem $object
* @return string
* @access protected
*/
protected function getItemTitle(&$object)
{
$title_field = $this->Application->getUnitOption($object->Prefix, 'TitleField');
return $object->GetField($title_field);
}
/**
* [AGGREGATED TAGS] works as <inp2:CatalogItemPrefix_Image, ImageSize, ImageSrc ..../>
*
* @param Array $params
* @return string
*/
function ItemImageTag($params)
{
$this->LoadItemImage($params);
return $this->$params['original_tag']($params);
}
function LargeImageExists($params)
{
$object = $this->getObject($params);
if ($object->GetDBField('SameImages') == null || $object->GetDBField('SameImages') == 1) {
return false;
}
else {
return true;
}
}
function LoadItemImage($params)
{
$parent_item = $this->Application->recallObject($params['PrefixSpecial']);
/* @var $parent_item kCatDBItem */
$object = $this->Application->recallObject($this->getPrefixSpecial(), null, Array('skip_autoload' => true));
/* @var $object kDBItem */
$object->Clear();
// if we need primary thumbnail which is preloaded with category item's list
$is_primary = $this->SelectParam($params, 'primary,Primary');
$image_name = $this->SelectParam($params, 'name,Name');
$image_field = $this->SelectParam($params, 'field,Field'); // ie. virtual names PrimaryImage, Image1, Image2
$image_id = $this->Application->GetVar($this->Prefix.'_id');
if (
// is primary, when primary mark set OR name & field not given
($is_primary || !($image_name || $image_field)) &&
// primary image is preloaded AND direct id not given
$parent_item->isField('ThumbPath') && !$image_id
) {
if (is_null($parent_item->GetDBField('SameImages'))) {
// JOIN definetly failed, because it's not-null column
$object->setLoaded(false);
}
else {
$object->SetDBField('Url', $parent_item->GetDBField('FullUrl'));
$object->SetDBFieldsFromHash($parent_item->GetFieldValues(), null, Array('AltName', 'SameImages', 'LocalThumb', 'ThumbPath', 'ThumbUrl', 'LocalImage', 'LocalPath'));
if (!$object->GetDBField('AltName')) {
$object->SetDBField('AltName', $this->getItemTitle($parent_item));
}
$object->setLoaded();
}
}
else { // if requested image is not primary thumbnail - load it directly
$id_field = $this->Application->getUnitOption($this->Prefix, 'ForeignKey');
$parent_table_key = $this->Application->getUnitOption($this->Prefix, 'ParentTableKey');
$keys[$id_field] = $parent_item->GetDBField($parent_table_key);
// which image to load?
if ($is_primary) {
// by PrimaryImage mark
$keys['DefaultImg'] = 1;
}
elseif ($image_name) {
// by ImageName
$keys['Name'] = $image_name;
}
elseif ($image_field) {
// by virtual field name in main object
$field_options = $parent_item->GetFieldOptions( $image_field );
$keys['Name'] = isset($field_options['original_field']) ? $field_options['original_field'] : $image_field;
}
elseif ($image_id) {
// by ID
$keys['ImageId'] = $image_id;
}
else {
// by PrimaryImage if no other criteria given
$keys['DefaultImg'] = 1;
}
$object->Load($keys);
if ( $image_field ) {
$image_src = $parent_item->GetDBField( $image_field );
// when image is uploaded to virtual field in main item, but not saved to db
$object->SetDBField('ThumbPath', $image_src);
if (!$object->isLoaded() && $image_src) {
// set fields for displaying new image during main item suggestion with errors
$fields_hash = Array (
'Url' => '',
'ThumbUrl' => '',
'LocalPath' => '',
'SameImages' => 1,
'LocalThumb' => 1,
'LocalImage' => 1,
);
$object->SetDBFieldsFromHash($fields_hash);
$object->setLoaded();
}
}
}
}
function getImageDimension($type, $params)
{
$ret = isset($params['Max'.$type]) ? $params['Max'.$type] : false;
if (!$ret) {
return $ret;
}
$parent_prefix = $this->Application->getUnitOption($this->Prefix, 'ParentPrefix');
if ($ret == 'thumbnail') {
$ret = $this->Application->ConfigValue($parent_prefix.'_ThumbnailImage'.$type);
}
if ($ret == 'fullsize') {
$ret = $this->Application->ConfigValue($parent_prefix.'_FullImage'.$type);
}
return $ret;
}
/**
* Appends "/" to beginning of image path (in case when missing)
*
* @param kDBItem $object
* @todo old in-portal doesn't append first slash, but we do => append first slash for him :)
*/
function makeRelativePaths(&$object)
{
$thumb_path = $object->GetDBField('ThumbPath');
if ($thumb_path && substr($thumb_path, 0, 1) != DIRECTORY_SEPARATOR) {
$object->SetDBField('ThumbPath', DIRECTORY_SEPARATOR . $thumb_path);
}
$local_path = $object->GetDBField('LocalPath');
if ($local_path && substr($local_path, 0, 1) != DIRECTORY_SEPARATOR) {
$object->SetDBField('LocalPath', DIRECTORY_SEPARATOR . $local_path);
}
}
function ImageSrc($params)
{
$object = $this->getObject($params);
/* @var $object kDBItem */
$this->makeRelativePaths($object);
// show "noimage.gif" when requested image is missing OR was not uploaded
$use_default_image = !(defined('DBG_IMAGE_RECOVERY') && DBG_IMAGE_RECOVERY);
$src_image_url = $this->_getImageUrl($params);
$src_image = $this->_getImagePath($src_image_url);
if (!$object->isLoaded() || ($src_image_url && $src_image)) {
// we can auto-resize image, when it is stored locally
$max_width = $this->getImageDimension('Width', $params);
$max_height = $this->getImageDimension('Height', $params);
$format = array_key_exists('format', $params) ? $params['format'] : false;
if (!$max_width && $format) {
// user watermarks from format param
$max_width = $format;
}
if ($max_width > 0 || $max_height > 0 || $format) {
list ($max_width, $max_height) = $this->_transformParams($params, $max_width, $max_height);
if ($object->isLoaded() && file_exists($src_image)) {
$image_helper = $this->Application->recallObject('ImageHelper');
/* @var $image_helper ImageHelper */
return $image_helper->ResizeImage($src_image, $max_width, $max_height);
}
elseif ($use_default_image) {
return $this->_getDefaultImage($params, $max_width, $max_height);
}
return $src_image_url;
}
}
if ($src_image_url) {
// convert full url to full path!
$dst_image = $this->_getImagePath($src_image_url);
$image_found = $dst_image ? file_exists($dst_image) : true;
if ($image_found) {
// image isn't deleted OR is stored on remote location
return $src_image_url;
}
}
// return Default Image or false if NOT specified (only for case, when SameImages = 0)
return $use_default_image ? $this->_getDefaultImage($params) : $src_image_url;
}
/**
* Get location on disk for images, stored locally and false for remote images
*
* @param string $src_image
* @return string
*/
function _getImagePath($src_image)
{
if (!$src_image) {
return false;
}
$file_helper = $this->Application->recallObject('FileHelper');
/* @var $file_helper FileHelper */
$dst_image = $file_helper->urlToPath($src_image);
return $dst_image != $src_image ? $dst_image : false;
}
function _getImageUrl($params)
{
$object = $this->getObject($params);
/* @var $object kDBItem */
$base_url = rtrim($this->Application->BaseURL(), '/');
// if we need thumbnail, or full image is same as thumbnail
$show_thumbnail = $this->SelectParam($params, 'thumbnail,Thumbnail') || // old style
(isset($params['MaxWidth']) && $params['MaxWidth'] == 'thumbnail') || // new style
(isset($params['MaxHeight']) && $params['MaxHeight'] == 'thumbnail');
if ($show_thumbnail || $object->GetDBField('SameImages')) {
// return local image or url
$ret = $object->GetDBField('LocalThumb') ? $base_url . $object->GetDBField('ThumbPath') : $object->GetDBField('ThumbUrl');
}
else { // if we need full which is not the same as thumb
$ret = $object->GetDBField('LocalImage') ? $base_url . $object->GetDBField('LocalPath') : $object->GetDBField('Url');
}
return $ret == $base_url ? '' : $ret;
}
/**
* Transforms Image/ImageSrc aggregated tag parameters into ones, that ResizeImage method understands
*
* @param Array $params
* @param int|bool $max_width
* @param int|bool $max_height
* @return Array
*/
function _transformParams($params, $max_width = false, $max_height = false)
{
$resize_format = 'resize:' . $max_width . 'x' . $max_height;
$crop = $this->SelectParam($params, 'Crop,crop');
if ($crop) {
if (strpos($crop, ';') === false) {
$crop = 'c|c';
}
$max_width = (is_null($max_height) ? $max_width : $resize_format) . ';crop:' . $crop;
$max_height = null;
}
$fill = $this->SelectParam($params, 'Fill,fill');
if ($fill) {
$max_width = (is_null($max_height) ? $max_width : $resize_format) . ';fill:' . $fill;
$max_height = null;
}
$watermark = $this->SelectParam($params, 'Watermark,watermark');
if ($watermark) {
$max_width = (is_null($max_height) ? $max_width : $resize_format) . ';wm:' . $watermark;
$max_height = null;
}
return Array ($max_width, $max_height);
}
/**
* Returns default full url to default images
*
* @param Array $params
* @param int|bool $max_width
* @param int|bool $max_height
* @return string
*/
function _getDefaultImage($params, $max_width = false, $max_height = false)
{
$default_image = $this->SelectParam($params, 'default_image,DefaultImage');
if (!$default_image) {
return '';
}
// show default image, use different base urls for admin and front-end
$base_url = rtrim($this->Application->BaseURL(), '/');
$sub_folder = $this->Application->isAdmin ? rtrim(IMAGES_PATH, '/') : THEMES_PATH;
if (($max_width !== false) || ($max_height !== false)) {
$image_helper = $this->Application->recallObject('ImageHelper');
/* @var $image_helper ImageHelper */
$src_image = FULL_PATH . $sub_folder . '/' . $default_image;
return $image_helper->ResizeImage($src_image, $max_width, $max_height);
}
return $base_url . $sub_folder . '/' . $default_image;
}
function getFullPath($path)
{
if (!$path) {
return $path;
}
// absolute url
if (preg_match('/^(.*):\/\/(.*)$/U', $path)) {
$file_helper = $this->Application->recallObject('FileHelper');
/* @var $file_helper FileHelper */
return $file_helper->urlToPath($path);
}
// TODO: change to urlToPath usage later
// relative url (we add sort of <inp2:m_TemplatesBase/> does
return FULL_PATH . '/' . mb_substr(THEMES_PATH, 1) . '/' . rawurldecode($path);
}
/**
* Makes size clause for img tag, such as
* ' width="80" height="100"' according to max_width
* and max_heght limits.
*
* @param array $params
* @return string
*/
function ImageSize($params)
{
$img_path = $this->getFullPath($params['img_path']);
$image_helper = $this->Application->recallObject('ImageHelper');
/* @var $image_helper ImageHelper */
$max_width = $this->getImageDimension('Width', $params);
$max_height = $this->getImageDimension('Height', $params);
$image_dimensions = $image_helper->GetImageDimensions($img_path, $max_width, $max_height, $params);
if (!$image_dimensions) {
return false;
}
return ' width="'.$image_dimensions[0].'" height="'.$image_dimensions[1].'"';
}
/**
* Prepares image parameters & parses block with them (for admin)
*
* @param Array $params
* @return string
* @access protected
*/
protected function Image($params)
{
$image_url = $this->ImageSrc($params);
if ( !$image_url ) {
return '';
}
$object = $this->getObject($params);
/* @var $object kDBItem */
$params['img_path'] = $image_url;
$image_dimensions = $this->ImageSize($params);
$params['img_size'] = $image_dimensions ? $image_dimensions : ' width="' . $params['DefaultWidth'] . '"';
$params['alt'] = htmlspecialchars($object->GetField('AltName'), null, CHARSET); // really used ?
$params['name'] = $this->SelectParam($params, 'block,render_as');
$params['align'] = array_key_exists('align', $params) ? $params['align'] : 'left';
$params['no_editing'] = 1;
if ( !$object->isLoaded() && !$this->SelectParam($params, 'default_image,DefaultImage') ) {
return '';
}
return $this->Application->ParseBlock($params);
}
/**
* Returns url for image in case when image source is url (for admin)
*
* @param Array $params
* @return string
*/
function ImageUrl($params)
{
$object = $this->getObject($params);
if ($object->GetDBField('SameImages') ? $object->GetDBField('LocalThumb') : $object->GetDBField('LocalImage') ) {
$ret = $this->Application->Phrase(getArrayValue($params,'local_phrase'));
}
else {
$ret = $object->GetDBField('SameImages') ? $object->GetDBField('ThumbUrl') : $object->GetDBField('Url');
}
return $ret;
}
/**
* If data was modfied & is in TempTables mode, then parse block with name passed;
* remove modification mark if not in TempTables mode
*
* @param Array $params
* @return string
* @access public
* @author Alexey
*/
function SaveWarning($params)
{
if ($this->Prefix == 'c-img') {
return $this->Application->ProcessParsedTag('c', 'SaveWarning', $params);
}
return parent::SaveWarning($params);
}
}

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