| Current File : //opt/RZphp72/includes/XML/Transformer/Namespace/Image.php |
<?php
//
// +---------------------------------------------------------------------------+
// | PEAR :: XML :: Transformer :: Image Namespace Handler |
// +---------------------------------------------------------------------------+
// | Copyright (c) 2002-2005 Sebastian Bergmann <sb@sebastian-bergmann.de> and |
// | Kristian K�hntopp <kris@koehntopp.de>. |
// +---------------------------------------------------------------------------+
// | This source file is subject to version 3.00 of the PHP License, |
// | that is available at http://www.php.net/license/3_0.txt. |
// | If you did not receive a copy of the PHP license and are unable to |
// | obtain it through the world-wide-web, please send a note to |
// | license@php.net so we can mail you a copy immediately. |
// +---------------------------------------------------------------------------+
//
// $Id$
//
require_once 'XML/Transformer/Namespace.php';
require_once 'XML/Util.php';
define('PEAR_XML_TRANSFORMER_IMAGE_FONTPATH', '/usr/X11R6/lib/X11/fonts/truetype');
define('PEAR_XML_TRANSFORMER_IMAGE_cacheDir', '/cache/gtext');
/**
* Handler for the Image Namespace.
*
* Example:
*
* <code>
* <?php
* require_once 'XML/Transformer_OutputBuffer.php';
* require_once 'XML/Transformer/Namespace/Image.php';
*
* $t = new XML_Transformer_OutputBuffer;
* $t->overloadNamespace('img', new XML_Transformer_Namespace_Image);
* $t->start();
* ?>
* <html>
* <body>
* <!-- Height and Width attributes are autogenerated -->
* <img:img src="somepng.png" alt="A sample image" />
*
* <!-- Set default for all subsequent <img:gtext /> -->
* <img:gtextdefault bgcolor="888888" fgcolor="#000000"
* font="arial.ttf" fontsize="33"
* border="2" spacing="2"
* split="" cacheable="yes" />
*
* <!-- Render Text as PNG image -->
* <img:gtext>0123456789 �����</img:gtext><br />
* </body>
* </html>
* </code>
*
* Output:
*
* <code>
* <html>
* <body>
* <img alt="A sample image" height="33" src="somepng.png" width="133" />
* <span><img alt="0123456789 �����" height="41" width="338"
* src="/cache/gtext/8b91aee0403c5cdccc1dd96bd4f49fbb.png" /></span>
* </body>
* </html>
* </code>
*
* @author Sebastian Bergmann <sb@sebastian-bergmann.de>
* @author Kristian K�hntopp <kris@koehntopp.de>
* @copyright Copyright © 2002-2005 Sebastian Bergmann <sb@sebastian-bergmann.de> and Kristian K�hntopp <kris@koehntopp.de>
* @license http://www.php.net/license/3_0.txt The PHP License, Version 3.0
* @category XML
* @package XML_Transformer
*/
class XML_Transformer_Namespace_Image extends XML_Transformer_Namespace {
// {{{ Members
/**
* @var boolean
* @access public
*/
var $defaultNamespacePrefix = 'img';
/**
* @var array
* @access private
*/
var $_imgAttributes = array();
/**
* @var array
* @access private
*/
var $_gtextAttributes = array();
/**
* @var array
* @access private
*/
var $_gtextDefaultAttributes = array();
// }}}
// {{{ function start_img($attributes)
/**
* @param array
* @return string
* @access public
*/
function start_img($attributes) {
$this->_imgAttributes = $attributes;
return '';
}
// }}}
// {{{ function end_img($cdata)
/**
* @param string
* @return string
* @access public
*/
function end_img($cdata) {
$src = $this->_truePath($this->_imgAttributes['src']);
list($w, $h, $t, $whs) = getimagesize($src);
$this->_imgAttributes['height'] = $h;
$this->_imgAttributes['width'] = $w;
return sprintf(
'<img %s />',
XML_Util::attributesToString($this->_imgAttributes)
);
}
// }}}
// {{{ start_gtext($attributes)
/**
* @param array
* @return string
* @access public
*/
function start_gtext($attributes) {
foreach ($this->_gtextDefaultAttributes as $k => $v) {
if (! isset($attributes[$k])) {
$attributes[$k] = $v;
}
}
if (!file_exists($attributes['font'])) {
$attributes['font'] = PEAR_XML_TRANSFORMER_IMAGE_FONTPATH . '/' . $attributes['font'];
}
$this->_gtextAttributes = $attributes;
return '';
}
// }}}
// {{{ function end_gtext($cdata)
/**
* @param string
* @return string
* @access public
*/
function end_gtext($cdata) {
if(!is_file($this->_gtextAttributes['font']))
return '<span>font \"' .
$this->_gtextAttributes['font'] .
'" not found</span>';
switch ($this->_gtextAttributes['split']) {
case 'word': {
$text = preg_split('/\s+/', $cdata);
foreach ($text as $index => $word) {
if ($index) {
$text[$index] = " $word";
}
}
}
break;
case 'char': {
$text = preg_split('//', $cdata);
foreach ($text as $index => $word) {
if ($word == ' ' || $word == '') {
$text[$index] = chr(160);
}
}
}
break;
default: {
$text = array(0 => $cdata);
}
}
$r = '';
foreach ($text as $index => $word) {
$baseline = $this->_baseline(
$this->_gtextAttributes['font'],
$this->_gtextAttributes['fontsize']
);
$src = $this->_createImage($word,$baseline);
$alt = $this->_createAlt($word);
$r .= sprintf(
'<%simg src="%s" alt="%s" />',
($this->_prefix[0] != '&MAIN') ? $this->_prefix[0] . ':' : '',
$src,
addslashes($alt)
);
}
return "<span>$r</span>";
}
// }}}
// {{{ function start_gtextdefault($attributes)
/**
* @param array
* @return string
* @access public
*/
function start_gtextdefault($attributes) {
$this->_gtextDefaultAttributes = $attributes;
return '';
}
// }}}
// {{{ function end_gtextdefault()
/**
* @param string
* @return string
* @access public
*/
function end_gtextdefault() {
return '';
}
// }}}
// {{{ function _baseline($font, $size)
/**
* @param string
* @param integer
* @return ImageTTFBBox
* @access private
*/
function _baseline($font, $size) {
$r = ImageTTFBBox(
$size,
0,
$font,
'Gg�_|����QqPp'
);
return $r[1];
}
// }}}
// {{{ function _colorString($color)
/**
* @param integer
* @return array
* @access private
*/
function _colorString($color) {
if (substr($color, 0, 1) == '#') {
$color = substr($color, 1);
}
$r = hexdec(substr($color, 0, 2));
$g = hexdec(substr($color, 2, 2));
$b = hexdec(substr($color, 4, 2));
return array($r, $g, $b);
}
// }}}
// {{{ function _createAlt($word)
/**
* @param string
* @return string
* @access private
*/
function _createAlt($word) {
if (isset($this->_gtextAttributes['alt'])) {
return $this->_gtextAttributes['alt'];
}
return strip_tags($word);
}
// }}}
// {{{ function _createImage($word, $baseline)
/**
* @param string
* @param integer
* @return string
* @access private
*/
function _createImage($word, $baseline) {
$font = isset($this->_gtextAttributes['font']) ? $this->_gtextAttributes['font'] : 'arial.ttf';
$fh = isset($this->_gtextAttributes['fontsize']) ? $this->_gtextAttributes['fontsize'] : 12;
$bgcolor = isset($this->_gtextAttributes['bgcolor']) ? $this->_gtextAttributes['bgcolor'] : '#ffffff';
$fgcolor = isset($this->_gtextAttributes['fgcolor']) ? $this->_gtextAttributes['fgcolor'] : '#ffffff';
$antialias = isset($this->_gtextAttributes['antialias']) ? $this->_gtextAttributes['antialias'] : 'yes';
$transparency = isset($this->_gtextAttributes['transparency']) ? $this->_gtextAttributes['transparency'] : 'yes';
$cacheable = isset($this->_gtextAttributes['cacheable']) ? $this->_gtextAttributes['cacheable'] : 'yes';
$spacing = isset($this->_gtextAttributes['spacing']) ? $this->_gtextAttributes['spacing'] : 2;
$border = isset($this->_gtextAttributes['border']) ? $this->_gtextAttributes['border'] : 0;
$bordercolor = isset($this->_gtextAttributes['bordercolor']) ? $this->_gtextAttributes['bordercolor'] : '#ff0000';
/* The cache name is derived from all attributes and cdata.
* This is very conserative and may create to many cachefiles,
* but better to err on the safe side.
*/
$cachefile = md5(XML_Util::attributesToString($this->_gtextAttributes) . ':' . $word) . '.png';
$cacheDir = $_SERVER['DOCUMENT_ROOT']
. PEAR_XML_TRANSFORMER_IMAGE_cacheDir;
$cacheName = "$cacheDir/$cachefile";
$cacheURL = PEAR_XML_TRANSFORMER_IMAGE_cacheDir. "/$cachefile";
if (!is_dir($cacheDir)) {
mkdir($cacheDir, 01777);
}
/* Don't do the same work twice. */
if (file_exists($cacheName) && $cacheable != 'no') {
return $cacheURL;
}
$r = ImageTTFBBox(
$fh,
0,
$font,
$word
);
$w = max(1/10*$fh, abs($r[2] - $r[0]));
$h = max(1, abs($r[7] - $r[1]));
$x = $r[0];
$y = $baseline;
$www = $w + 2*($spacing+$border);
$hhh = $fh + 2*($spacing+$border);
$im = ImageCreate($www, $hhh);
list($r, $g, $b) = $this->_colorString($bgcolor);
$bg = ImageColorAllocate($im, $r, $g, $b);
if ($transparency != 'no') {
ImageColorTransparent($im, $bg);
}
list($r, $g, $b) = $this->_colorString($fgcolor);
$fg = ImageColorAllocate($im, $r, $g, $b);
if ($antialias == 'no') {
$fg = -$fg;
}
list($r, $g, $b) = $this->_colorString($bordercolor);
$bo = ImageColorAllocate($im, $r, $g, $b);
ImageFilledRectangle($im, 0, 0, $www, $hhh, $bg);
if ($border > 0) {
for ($i=$border; $i>=0; $i--) {
$x1 = $y1 = $i;
$x2 = $www-$i-1;
$y2 = $hhh-$i-1;
ImageRectangle($im, $x1, $y1, $x2, $y2, $bo);
}
}
ImageTTFText(
$im,
$fh,
0,
-$x+$spacing+$border,
$hhh-(2+$y+$spacing+$border),
$fg,
$font,
$word
);
ImagePNG($im, $cacheName);
ImageDestroy($im);
return $cacheURL;
}
// }}}
// {{{ function _truePath($path)
/**
* @param string
* @return string
* @access private
*/
function _truePath($path) {
if (php_sapi_name() == 'apache') {
$uri = apache_lookup_uri($path);
return $uri->filename;
} else {
return $_SERVER['DOCUMENT_ROOT'] . '/' . $path;
}
}
// }}}
}
/*
* vim600: et sw=2 ts=2 fdm=marker
* vim<600: et sw=2 ts=2
*/
?>