woocommerce/apigen/libs/Texy/texy/modules/TexyImageModule.php

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2014-02-14 14:29:30 +00:00
<?php
/**
* Texy! - human-readable text to HTML converter.
*
* @copyright Copyright (c) 2004, 2010 David Grudl
* @license GNU GENERAL PUBLIC LICENSE version 2 or 3
* @link http://texy.info
* @package Texy
*/
/**
* Images module.
*
* @copyright Copyright (c) 2004, 2010 David Grudl
* @package Texy
*/
final class TexyImageModule extends TexyModule
{
/** @var string root of relative images (http) */
public $root = 'images/';
/** @var string root of linked images (http) */
public $linkedRoot = 'images/';
/** @var string physical location of images on server */
public $fileRoot = NULL;
/** @var string left-floated images CSS class */
public $leftClass;
/** @var string right-floated images CSS class */
public $rightClass;
/** @var string default alternative text */
public $defaultAlt = '';
/** @var string images onload handler */
public $onLoad = "var i=new Image();i.src='%i';if(typeof preload=='undefined')preload=new Array();preload[preload.length]=i;this.onload=''";
/** @var array image references */
private $references = array();
public function __construct($texy)
{
$this->texy = $texy;
$texy->allowed['image/definition'] = TRUE;
$texy->addHandler('image', array($this, 'solve'));
$texy->addHandler('beforeParse', array($this, 'beforeParse'));
// [*image*]:LINK
$texy->registerLinePattern(
array($this, 'patternImage'),
'#'.TEXY_IMAGE.TEXY_LINK_N.'??()#Uu',
'image'
);
}
/**
* Text pre-processing.
* @param Texy
* @param string
* @return void
*/
public function beforeParse($texy, & $text)
{
if (!empty($texy->allowed['image/definition'])) {
// [*image*]: urls .(title)[class]{style}
$text = preg_replace_callback(
'#^\[\*([^\n]+)\*\]:\ +(.+)\ *'.TEXY_MODIFIER.'?\s*()$#mUu',
array($this, 'patternReferenceDef'),
$text
);
}
}
/**
* Callback for: [*image*]: urls .(title)[class]{style}.
*
* @param array regexp matches
* @return string
*/
private function patternReferenceDef($matches)
{
list(, $mRef, $mURLs, $mMod) = $matches;
// [1] => [* (reference) *]
// [2] => urls
// [3] => .(title)[class]{style}<>
$image = $this->factoryImage($mURLs, $mMod, FALSE);
$this->addReference($mRef, $image);
return '';
}
/**
* Callback for [* small.jpg 80x13 | small-over.jpg | big.jpg .(alternative text)[class]{style}>]:LINK.
*
* @param TexyLineParser
* @param array regexp matches
* @param string pattern name
* @return TexyHtml|string|FALSE
*/
public function patternImage($parser, $matches)
{
list(, $mURLs, $mMod, $mAlign, $mLink) = $matches;
// [1] => URLs
// [2] => .(title)[class]{style}<>
// [3] => * < >
// [4] => url | [ref] | [*image*]
$tx = $this->texy;
$image = $this->factoryImage($mURLs, $mMod.$mAlign);
if ($mLink) {
if ($mLink === ':') {
$link = new TexyLink($image->linkedURL === NULL ? $image->URL : $image->linkedURL);
$link->raw = ':';
$link->type = TexyLink::IMAGE;
} else {
$link = $tx->linkModule->factoryLink($mLink, NULL, NULL);
}
} else $link = NULL;
return $tx->invokeAroundHandlers('image', $parser, array($image, $link));
}
/**
* Adds new named reference to image.
*
* @param string reference name
* @param TexyImage
* @return void
*/
public function addReference($name, TexyImage $image)
{
$image->name = TexyUtf::strtolower($name);
$this->references[$image->name] = $image;
}
/**
* Returns named reference.
*
* @param string reference name
* @return TexyImage reference descriptor (or FALSE)
*/
public function getReference($name)
{
$name = TexyUtf::strtolower($name);
if (isset($this->references[$name]))
return clone $this->references[$name];
return FALSE;
}
/**
* Parses image's syntax.
* @param string input: small.jpg 80x13 | small-over.jpg | linked.jpg
* @param string
* @param bool
* @return TexyImage
*/
public function factoryImage($content, $mod, $tryRef = TRUE)
{
$image = $tryRef ? $this->getReference(trim($content)) : FALSE;
if (!$image) {
$tx = $this->texy;
$content = explode('|', $content);
$image = new TexyImage;
// dimensions
$matches = NULL;
if (preg_match('#^(.*) (\d+|\?) *(X|x) *(\d+|\?) *()$#U', $content[0], $matches)) {
$image->URL = trim($matches[1]);
$image->asMax = $matches[3] === 'X';
$image->width = $matches[2] === '?' ? NULL : (int) $matches[2];
$image->height = $matches[4] === '?' ? NULL : (int) $matches[4];
} else {
$image->URL = trim($content[0]);
}
if (!$tx->checkURL($image->URL, Texy::FILTER_IMAGE)) $image->URL = NULL;
// onmouseover image
if (isset($content[1])) {
$tmp = trim($content[1]);
if ($tmp !== '' && $tx->checkURL($tmp, Texy::FILTER_IMAGE)) $image->overURL = $tmp;
}
// linked image
if (isset($content[2])) {
$tmp = trim($content[2]);
if ($tmp !== '' && $tx->checkURL($tmp, Texy::FILTER_ANCHOR)) $image->linkedURL = $tmp;
}
}
$image->modifier->setProperties($mod);
return $image;
}
/**
* Finish invocation.
*
* @param TexyHandlerInvocation handler invocation
* @param TexyImage
* @param TexyLink
* @return TexyHtml|FALSE
*/
public function solve($invocation, TexyImage $image, $link)
{
if ($image->URL == NULL) return FALSE;
$tx = $this->texy;
$mod = $image->modifier;
$alt = $mod->title;
$mod->title = NULL;
$hAlign = $mod->hAlign;
$mod->hAlign = NULL;
$el = TexyHtml::el('img');
$el->attrs['src'] = NULL; // trick - move to front
$mod->decorate($tx, $el);
$el->attrs['src'] = Texy::prependRoot($image->URL, $this->root);
if (!isset($el->attrs['alt'])) {
if ($alt !== NULL) $el->attrs['alt'] = $tx->typographyModule->postLine($alt);
else $el->attrs['alt'] = $this->defaultAlt;
}
if ($hAlign) {
$var = $hAlign . 'Class'; // leftClass, rightClass
if (!empty($this->$var)) {
$el->attrs['class'][] = $this->$var;
} elseif (empty($tx->alignClasses[$hAlign])) {
$el->attrs['style']['float'] = $hAlign;
} else {
$el->attrs['class'][] = $tx->alignClasses[$hAlign];
}
}
if (!is_int($image->width) || !is_int($image->height) || $image->asMax) {
// autodetect fileRoot
if ($this->fileRoot === NULL && isset($_SERVER['SCRIPT_FILENAME'])) {
$this->fileRoot = dirname($_SERVER['SCRIPT_FILENAME']) . '/' . $this->root;
}
// detect dimensions
// absolute URL & security check for double dot
if (Texy::isRelative($image->URL) && strpos($image->URL, '..') === FALSE) {
$file = rtrim($this->fileRoot, '/\\') . '/' . $image->URL;
if (@is_file($file)) { // intentionally @
$size = @getImageSize($file); // intentionally @
if (is_array($size)) {
if ($image->asMax) {
$ratio = 1;
if (is_int($image->width)) $ratio = min($ratio, $image->width / $size[0]);
if (is_int($image->height)) $ratio = min($ratio, $image->height / $size[1]);
$image->width = round($ratio * $size[0]);
$image->height = round($ratio * $size[1]);
} elseif (is_int($image->width)) {
$ratio = round($size[1] / $size[0] * $image->width);
$image->height = round($size[1] / $size[0] * $image->width);
} elseif (is_int($image->height)) {
$image->width = round($size[0] / $size[1] * $image->height);
} else {
$image->width = $size[0];
$image->height = $size[1];
}
}
}
}
}
$el->attrs['width'] = $image->width;
$el->attrs['height'] = $image->height;
// onmouseover actions generate
if ($image->overURL !== NULL) {
$overSrc = Texy::prependRoot($image->overURL, $this->root);
$el->attrs['onmouseover'] = 'this.src=\'' . addSlashes($overSrc) . '\'';
$el->attrs['onmouseout'] = 'this.src=\'' . addSlashes($el->attrs['src']) . '\'';
$el->attrs['onload'] = str_replace('%i', addSlashes($overSrc), $this->onLoad);
$tx->summary['preload'][] = $overSrc;
}
$tx->summary['images'][] = $el->attrs['src'];
if ($link) return $tx->linkModule->solve(NULL, $link, $el);
return $el;
}
}
/**
* @package Texy
*/
final class TexyImage extends TexyObject
{
/** @var string base image URL */
public $URL;
/** @var string on-mouse-over image URL */
public $overURL;
/** @var string anchored image URL */
public $linkedURL;
/** @var int optional image width */
public $width;
/** @var int optional image height */
public $height;
/** @var bool image width and height are maximal */
public $asMax;
/** @var TexyModifier */
public $modifier;
/** @var string reference name (if is stored as reference) */
public $name;
public function __construct()
{
$this->modifier = new TexyModifier;
}
public function __clone()
{
if ($this->modifier) {
$this->modifier = clone $this->modifier;
}
}
}