Portal Secure Messaging Audits

[openemr.git] / library / html2pdf / _class / parsingCss.class.php

<?php
/**
 * HTML2PDF Library - parsingCss class
 *
 * HTML => PDF convertor
 * distributed under the LGPL License
 *
 * @package   Html2pdf
 * @author    Laurent MINGUET <webmaster@html2pdf.fr>
 * @copyright 2016 Laurent MINGUET
 */
class HTML2PDF_parsingCss
{
    /**
     * reference to the pdf object
     * @var TCPDF
     */
    protected $_pdf         = null;

    protected $_htmlColor   = array(); // list of the HTML colors
    protected $_onlyLeft    = false;   // flag if we are in a sub html => only "text-align:left" is used
    protected $_defaultFont = null;    // default font to use if the asked font does not exist

    public    $value        = array(); // current values
    public    $css          = array(); // css values
    public    $cssKeys      = array(); // css key, for the execution order
    public    $table        = array(); // level history

    /**
     * Constructor
     *
     * @param  &HTML2PDF_myPdf reference to the PDF $object
     * @access public
     */
    public function __construct(&$pdf)
    {
        $this->_init();
        $this->setPdfParent($pdf);
    }

    /**
     * Set the HTML2PDF parent object
     *
     * @param  &HTML2PDF reference to the HTML2PDF parent $object
     * @access public
     */
    public function setPdfParent(&$pdf)
    {
        $this->_pdf = &$pdf;
    }

    /**
     * Inform that we want only "test-align:left" because we are in a sub HTML
     *
     * @access public
     */
    public function setOnlyLeft()
    {
        $this->value['text-align'] = 'left';
        $this->_onlyLeft = true;
    }

    /**
     * Get the vales of the parent, if exist
     *
     * @return array CSS values
     * @access public
     */
    public function getOldValues()
    {
        return isset($this->table[count($this->table)-1]) ? $this->table[count($this->table)-1] : $this->value;
    }

    /**
    * define the Default Font to use, if the font does not exist, or if no font asked
    *
    * @param  string  default font-family. If null : Arial for no font asked, and error fot ont does not exist
    * @return string  old default font-family
    * @access public
    */
    public function setDefaultFont($default = null)
    {
        $old = $this->_defaultFont;
        $this->_defaultFont = $default;
        if ($default) $this->value['font-family'] = $default;
        return $old;
    }

     /**
     * Init the object
     *
     * @access protected
     */
    protected function _init()
    {
        // get the Web Colors from TCPDF
        $this->_htmlColor = TCPDF_COLORS::$webcolor;

        // init the Style
        $this->table = array();
        $this->value = array();
        $this->initStyle();

        // Init the styles without legacy
        $this->resetStyle();
    }

    /**
     * Init the CSS Style
     *
     * @access public
     */
    public function initStyle()
    {
        $this->value['id_tag']           = 'body';       // tag name
        $this->value['id_name']          = null;         // tag - attribute name
        $this->value['id_id']            = null;         // tag - attribute id
        $this->value['id_class']         = null;         // tag - attribute class
        $this->value['id_lst']           = array('*');   // tag - list of legacy
        $this->value['mini-size']        = 1.;           // specific size report for sup, sub
        $this->value['mini-decal']       = 0;            // specific position report for sup, sub
        $this->value['font-family']      = defined('PDF_FONT_NAME_MAIN') ? PDF_FONT_NAME_MAIN : 'Arial';
        $this->value['font-bold']        = false;
        $this->value['font-italic']      = false;
        $this->value['font-underline']   = false;
        $this->value['font-overline']    = false;
        $this->value['font-linethrough'] = false;
        $this->value['text-transform']   = 'none';
        $this->value['font-size']        = $this->convertToMM('10pt');
        $this->value['text-indent']      = 0;
        $this->value['text-align']       = 'left';
        $this->value['vertical-align']   = 'middle';
        $this->value['line-height']      = 'normal';

        $this->value['position']         = null;
        $this->value['x']                = null;
        $this->value['y']                = null;
        $this->value['width']            = 0;
        $this->value['height']           = 0;
        $this->value['top']              = null;
        $this->value['right']            = null;
        $this->value['bottom']           = null;
        $this->value['left']             = null;
        $this->value['float']            = null;
        $this->value['display']          = null;
        $this->value['rotate']           = null;
        $this->value['overflow']         = 'visible';

        $this->value['color']            = array(0, 0, 0);
        $this->value['background']       = array('color' => null, 'image' => null, 'position' => null, 'repeat' => null);
        $this->value['border']           = array();
        $this->value['padding']          = array();
        $this->value['margin']           = array();
        $this->value['margin-auto']      = false;

        $this->value['list-style-type']  = '';
        $this->value['list-style-image'] = '';

        $this->value['xc'] = null;
        $this->value['yc'] = null;
    }

    /**
     * Init the CSS Style without legacy
     *
     * @param  string  tag name
     * @access public
     */
    public function resetStyle($tagName = '')
    {
        // prepare somme values
        $border = $this->readBorder('solid 1px #000000');
        $units = array(
            '1px' => $this->convertToMM('1px'),
            '5px' => $this->convertToMM('5px'),
        );


        // prepare the Collapse attribute
        $collapse = isset($this->value['border']['collapse']) ? $this->value['border']['collapse'] : false;
        if (!in_array($tagName, array('tr', 'td', 'th', 'thead', 'tbody', 'tfoot'))) $collapse = false;

        // set the global css values
        $this->value['position']   = null;
        $this->value['x']          = null;
        $this->value['y']          = null;
        $this->value['width']      = 0;
        $this->value['height']     = 0;
        $this->value['top']        = null;
        $this->value['right']      = null;
        $this->value['bottom']     = null;
        $this->value['left']       = null;
        $this->value['float']      = null;
        $this->value['display']    = null;
        $this->value['rotate']     = null;
        $this->value['overflow']   = 'visible';
        $this->value['background'] = array('color' => null, 'image' => null, 'position' => null, 'repeat' => null);
        $this->value['border']     = array(
            't' => $this->readBorder('none'),
            'r' => $this->readBorder('none'),
            'b' => $this->readBorder('none'),
            'l' => $this->readBorder('none'),
            'radius' => array(
                'tl' => array(0, 0),
                'tr' => array(0, 0),
                'br' => array(0, 0),
                'bl' => array(0, 0)
            ),
            'collapse' => $collapse,
        );

        // specific values for some tags
        if (!in_array($tagName, array('h1', 'h2', 'h3', 'h4', 'h5', 'h6'))) {
            $this->value['margin'] = array('t'=>0,'r'=>0,'b'=>0,'l'=>0);
        }

        if (in_array($tagName, array('input', 'select', 'textarea'))) {
            $this->value['border']['t'] = null;
            $this->value['border']['r'] = null;
            $this->value['border']['b'] = null;
            $this->value['border']['l'] = null;
        }

        if ($tagName=='p') {
            $this->value['margin']['t'] = null;
            $this->value['margin']['b'] = null;
        }
        if ($tagName=='blockquote') {
            $this->value['margin']['t'] = 3;
            $this->value['margin']['r'] = 3;
            $this->value['margin']['b'] = 3;
            $this->value['margin']['l'] = 6;
        }
        $this->value['margin-auto'] = false;

        if (in_array($tagName, array('blockquote', 'div', 'fieldset'))) {
            $this->value['vertical-align'] = 'top';
        }

        if (in_array($tagName, array('fieldset', 'legend'))) {
            $this->value['border'] = array(
                't' => $border,
                'r' => $border,
                'b' => $border,
                'l' => $border,
                'radius' => array(
                    'tl' => array($units['5px'], $units['5px']),
                    'tr' => array($units['5px'], $units['5px']),
                    'br' => array($units['5px'], $units['5px']),
                    'bl' => array($units['5px'], $units['5px'])
                ),
                'collapse' => false,
            );
        }

        if (in_array($tagName, array('ul', 'li'))) {
            $this->value['list-style-type']  = '';
            $this->value['list-style-image'] = '';
        }

        if (!in_array($tagName, array('tr', 'td'))) {
            $this->value['padding'] = array(
                't' => 0,
                'r' => 0,
                'b' => 0,
                'l' => 0
            );
        } else {
            $this->value['padding'] = array(
                't' => $units['1px'],
                'r' => $units['1px'],
                'b' => $units['1px'],
                'l' => $units['1px']
            );
        }

        if ($tagName=='hr') {
            $this->value['border'] = array(
                't' => $border,
                'r' => $border,
                'b' => $border,
                'l' => $border,
                'radius' => array(
                    'tl' => array(0, 0),
                    'tr' => array(0, 0),
                    'br' => array(0, 0),
                    'bl' => array(0, 0)
                ),
                'collapse' => false,
            );
            $this->convertBackground('#FFFFFF', $this->value['background']);
        }

        $this->value['xc'] = null;
        $this->value['yc'] = null;
    }

    /**
     * Init the PDF Font
     *
     * @access public
     */
    public function fontSet()
    {
        $family = strtolower($this->value['font-family']);

        $b = ($this->value['font-bold']        ? 'B' : '');
        $i = ($this->value['font-italic']      ? 'I' : '');
        $u = ($this->value['font-underline']   ? 'U' : '');
        $d = ($this->value['font-linethrough'] ? 'D' : '');
        $o = ($this->value['font-overline']    ? 'O' : '');

        // font style
        $style = $b.$i;

        if ($this->_defaultFont) {
            if($family=='arial')
                $family='helvetica';
            elseif($family=='symbol' || $family=='zapfdingbats')
                $style='';

            $fontkey = $family.$style;
            if (!$this->_pdf->isLoadedFont($fontkey))
                $family = $this->_defaultFont;
        }

        if($family=='arial')
            $family='helvetica';
        elseif($family=='symbol' || $family=='zapfdingbats')
            $style='';

        // complete style
        $style.= $u.$d.$o;

        // size : mm => pt
        $size = $this->value['font-size'];
        $size = 72 * $size / 25.4;

        // apply the font
        $this->_pdf->SetFont($family, $style, $this->value['mini-size']*$size);
        $this->_pdf->setTextColorArray($this->value['color']);
        if ($this->value['background']['color'])
            $this->_pdf->setFillColorArray($this->value['background']['color']);
        else
            $this->_pdf->setFillColor(255);
    }

     /**
     * add a level in the CSS history
     *
     * @access public
     */
    public function save()
    {
        array_push($this->table, $this->value);
    }

     /**
     * remove a level in the CSS history
     *
     * @access public
     */
    public function load()
    {
        if (count($this->table)) {
            $this->value = array_pop($this->table);
        }
    }

     /**
     * restore the Y positiony (used after a span)
     *
     * @access public
     */
    public function restorePosition()
    {
        if ($this->value['y']==$this->_pdf->getY()) $this->_pdf->setY($this->value['yc'], false);
    }

     /**
     * set the New position for the current Tag
     *
     * @access public
     */
    public function setPosition()
    {
        // get the current position
        $currentX = $this->_pdf->getX();
        $currentY = $this->_pdf->getY();

        // save it
        $this->value['xc'] = $currentX;
        $this->value['yc'] = $currentY;

        if ($this->value['position']=='relative' || $this->value['position']=='absolute') {
            if ($this->value['right']!==null) {
                $x = $this->getLastWidth(true) - $this->value['right'] - $this->value['width'];
                if ($this->value['margin']['r']) $x-= $this->value['margin']['r'];
            } else {
                $x = $this->value['left'];
                if ($this->value['margin']['l']) $x+= $this->value['margin']['l'];
            }

            if ($this->value['bottom']!==null) {
                $y = $this->getLastHeight(true) - $this->value['bottom'] - $this->value['height'];
                if ($this->value['margin']['b']) $y-= $this->value['margin']['b'];
            } else {
                $y = $this->value['top'];
                if ($this->value['margin']['t']) $y+= $this->value['margin']['t'];
            }

            if ($this->value['position']=='relative') {
                $this->value['x'] = $currentX + $x;
                $this->value['y'] = $currentY + $y;
            } else {
                $this->value['x'] = $this->_getLastAbsoluteX()+$x;
                $this->value['y'] = $this->_getLastAbsoluteY()+$y;
            }
        } else {
            $this->value['x'] = $currentX;
            $this->value['y'] = $currentY;
            if ($this->value['margin']['l']) $this->value['x']+= $this->value['margin']['l'];
            if ($this->value['margin']['t']) $this->value['y']+= $this->value['margin']['t'];
        }

        // save the new position
        $this->_pdf->setXY($this->value['x'], $this->value['y']);
    }

     /**
     * Analise the CSS style to convert it into Form style
     *
     * @access public
     * @param  array    styles
     */
    public function getFormStyle()
    {
        $prop = array();

        $prop['alignment'] = $this->value['text-align'];

        if (isset($this->value['background']['color']) && is_array($this->value['background']['color'])) {
            $prop['fillColor'] = $this->value['background']['color'];
        }

        if (isset($this->value['border']['t']['color'])) {
            $prop['strokeColor'] = $this->value['border']['t']['color'];
        }

        if (isset($this->value['border']['t']['width'])) {
            $prop['lineWidth'] = $this->value['border']['t']['width'];
        }

        if (isset($this->value['border']['t']['type'])) {
            $prop['borderStyle'] = $this->value['border']['t']['type'];
        }

        if (!empty($this->value['color'])) {
            $prop['textColor'] = $this->value['color'];
        }

        if (!empty($this->value['font-size'])) {
            $prop['textSize'] = $this->value['font-size'];
        }

        return $prop;
    }

     /**
     * Analise the CSS style to convert it into SVG style
     *
     * @access public
     * @param  string   tag name
     * @param  array    styles
     */
    public function getSvgStyle($tagName, &$param)
    {
        // prepare
        $tagName = strtolower($tagName);
        $id   = isset($param['id'])   ? strtolower(trim($param['id']))   : null; if (!$id)   $id   = null;
        $name = isset($param['name']) ? strtolower(trim($param['name'])) : null; if (!$name) $name = null;

        // read the class attribute
        $class = array();
        $tmp = isset($param['class']) ? strtolower(trim($param['class'])) : '';
        $tmp = explode(' ', $tmp);
        foreach ($tmp as $k => $v) {
            $v = trim($v);
            if ($v) $class[] = $v;
        }

        // identify the tag, and the direct styles
        $this->value['id_tag'] = $tagName;
        $this->value['id_name']   = $name;
        $this->value['id_id']     = $id;
        $this->value['id_class']  = $class;
        $this->value['id_lst']    = array();
        $this->value['id_lst'][] = '*';
        $this->value['id_lst'][] = $tagName;
        if (!isset($this->value['svg'])) {
            $this->value['svg'] = array(
                'stroke'         => null,
                'stroke-width'   => $this->convertToMM('1pt'),
                'fill'           => null,
                'fill-opacity'   => null,
            );
        }

        if (count($class)) {
            foreach ($class as $v) {
                $this->value['id_lst'][] = '*.'.$v;
                $this->value['id_lst'][] = '.'.$v;
                $this->value['id_lst'][] = $tagName.'.'.$v;
            }
        }
        if ($id) {
            $this->value['id_lst'][] = '*#'.$id;
            $this->value['id_lst'][] = '#'.$id;
            $this->value['id_lst'][] = $tagName.'#'.$id;
        }

        // CSS style
        $styles = $this->_getFromCSS();

        // adding the style from the tag
        $styles = array_merge($styles, $param['style']);

        if (isset($styles['stroke']))        $this->value['svg']['stroke']       = $this->convertToColor($styles['stroke'], $res);
        if (isset($styles['stroke-width']))  $this->value['svg']['stroke-width'] = $this->convertToMM($styles['stroke-width']);
        if (isset($styles['fill']))          $this->value['svg']['fill']         = $this->convertToColor($styles['fill'], $res);
        if (isset($styles['fill-opacity']))  $this->value['svg']['fill-opacity'] = 1.*$styles['fill-opacity'];

        return $this->value['svg'];
    }

    /**
     * analyse the css properties from the HTML parsing
     *
     * @access public
     * @param  string  $tagName
     * @param  array   $param
     * @param  array   $legacy
     */
    public function analyse($tagName, &$param, $legacy = null)
    {
        // prepare the informations
        $tagName = strtolower($tagName);
        $id   = isset($param['id'])   ? strtolower(trim($param['id']))    : null; if (!$id)   $id   = null;
        $name = isset($param['name']) ? strtolower(trim($param['name']))  : null; if (!$name) $name = null;

        // get the class names to use
        $class = array();
        $tmp = isset($param['class']) ? strtolower(trim($param['class'])) : '';
        $tmp = explode(' ', $tmp);
        foreach ($tmp as $k => $v) {
            $v = trim($v);
            if ($v) $class[] = $v;
        }

        // prepare the values, and the list of css tags to identify
        $this->value['id_tag']   = $tagName;
        $this->value['id_name']  = $name;
        $this->value['id_id']    = $id;
        $this->value['id_class'] = $class;
        $this->value['id_lst']   = array();
        $this->value['id_lst'][] = '*';
        $this->value['id_lst'][] = $tagName;
        if (count($class)) {
            foreach ($class as $v) {
                $this->value['id_lst'][] = '*.'.$v;
                $this->value['id_lst'][] = '.'.$v;
                $this->value['id_lst'][] = $tagName.'.'.$v;
            }
        }
        if ($id) {
            $this->value['id_lst'][] = '*#'.$id;
            $this->value['id_lst'][] = '#'.$id;
            $this->value['id_lst'][] = $tagName.'#'.$id;
        }

        // get the css styles from class
        $styles = $this->_getFromCSS();

        // merge with the css styles from tag
        $styles = array_merge($styles, $param['style']);
        if (isset($param['allwidth']) && !isset($styles['width'])) $styles['width'] = '100%';

        // reset some styles, depending on the tag name
        $this->resetStyle($tagName);

        // add the legacy values
        if ($legacy) {
            foreach ($legacy as $legacyName => $legacyValue) {
                if (is_array($legacyValue)) {
                    foreach($legacyValue as $legacy2Name => $legacy2Value)
                        $this->value[$legacyName][$legacy2Name] = $legacy2Value;
                } else {
                    $this->value[$legacyName] = $legacyValue;
                }
            }
        }

        // some flags
        $correctWidth = false;
        $noWidth = true;

        // read all the css styles
        foreach ($styles as $nom => $val) {
            switch($nom)
            {
                case 'font-family':
                    $val = explode(',', $val);
                    $val = trim($val[0]);
                    if ($val) $this->value['font-family'] = $val;
                    break;

                case 'font-weight':
                    $this->value['font-bold'] = ($val=='bold');
                    break;

                case 'font-style':
                    $this->value['font-italic'] = ($val=='italic');
                    break;

                case 'text-decoration':
                    $val = explode(' ', $val);
                    $this->value['font-underline']   = (in_array('underline', $val));
                    $this->value['font-overline']    = (in_array('overline', $val));
                    $this->value['font-linethrough'] = (in_array('line-through', $val));
                    break;

                case 'text-indent':
                    $this->value['text-indent'] = $this->convertToMM($val);
                    break;

                case 'text-transform':
                    if (!in_array($val, array('none', 'capitalize', 'uppercase', 'lowercase'))) $val = 'none';
                    $this->value['text-transform']  = $val;
                    break;

                case 'font-size':
                    $val = $this->convertToMM($val, $this->value['font-size']);
                    if ($val) $this->value['font-size'] = $val;
                    break;

                case 'color':
                    $res = null;
                    $this->value['color'] = $this->convertToColor($val, $res);
                    if ($tagName=='hr') {
                        $this->value['border']['l']['color'] = $this->value['color'];
                        $this->value['border']['t']['color'] = $this->value['color'];
                        $this->value['border']['r']['color'] = $this->value['color'];
                        $this->value['border']['b']['color'] = $this->value['color'];
                    }
                    break;

                case 'text-align':
                    $val = strtolower($val);
                    if (!in_array($val, array('left', 'right', 'center', 'justify', 'li_right'))) $val = 'left';
                    $this->value['text-align'] = $val;
                    break;

                case 'vertical-align':
                    $this->value['vertical-align'] = $val;
                    break;

                case 'width':
                    $this->value['width'] = $this->convertToMM($val, $this->getLastWidth());
                    if ($this->value['width'] && substr($val, -1)=='%') $correctWidth=true;
                    $noWidth = false;
                    break;

                case 'height':
                    $this->value['height'] = $this->convertToMM($val, $this->getLastHeight());
                    break;

                case 'line-height':
                    if (preg_match('/^[0-9\.]+$/isU', $val)) $val = floor($val*100).'%';
                    $this->value['line-height'] = $val;
                    break;

                case 'rotate':
                    if (!in_array($val, array(0, -90, 90, 180, 270, -180, -270))) $val = null;
                    if ($val<0) $val+= 360;
                    $this->value['rotate'] = $val;
                    break;

                case 'overflow':
                    if (!in_array($val, array('visible', 'hidden'))) $val = 'visible';
                    $this->value['overflow'] = $val;
                    break;

                case 'padding':
                    $val = explode(' ', $val);
                    foreach ($val as $k => $v) {
                        $v = trim($v);
                        if ($v!='') {
                            $val[$k] = $v;
                        } else {
                            unset($val[$k]);
                        }
                    }
                    $val = array_values($val);
                    $this->_duplicateBorder($val);
                    $this->value['padding']['t'] = $this->convertToMM($val[0], 0);
                    $this->value['padding']['r'] = $this->convertToMM($val[1], 0);
                    $this->value['padding']['b'] = $this->convertToMM($val[2], 0);
                    $this->value['padding']['l'] = $this->convertToMM($val[3], 0);
                    break;

                case 'padding-top':
                    $this->value['padding']['t'] = $this->convertToMM($val, 0);
                    break;

                case 'padding-right':
                    $this->value['padding']['r'] = $this->convertToMM($val, 0);
                    break;

                case 'padding-bottom':
                    $this->value['padding']['b'] = $this->convertToMM($val, 0);
                    break;

                case 'padding-left':
                    $this->value['padding']['l'] = $this->convertToMM($val, 0);
                    break;

                case 'margin':
                    if ($val=='auto') {
                        $this->value['margin-auto'] = true;
                        break;
                    }
                    $val = explode(' ', $val);
                    foreach ($val as $k => $v) {
                        $v = trim($v);
                        if ($v!='') {
                            $val[$k] = $v;
                        } else {
                            unset($val[$k]);
                        }
                    }
                    $val = array_values($val);
                    $this->_duplicateBorder($val);
                    $this->value['margin']['t'] = $this->convertToMM($val[0], 0);
                    $this->value['margin']['r'] = $this->convertToMM($val[1], 0);
                    $this->value['margin']['b'] = $this->convertToMM($val[2], 0);
                    $this->value['margin']['l'] = $this->convertToMM($val[3], 0);
                    break;

                case 'margin-top':
                    $this->value['margin']['t'] = $this->convertToMM($val, 0);
                    break;

                case 'margin-right':
                    $this->value['margin']['r'] = $this->convertToMM($val, 0);
                    break;

                case 'margin-bottom':
                    $this->value['margin']['b'] = $this->convertToMM($val, 0);
                    break;

                case 'margin-left':
                    $this->value['margin']['l'] = $this->convertToMM($val, 0);
                    break;

                case 'border':
                    $val = $this->readBorder($val);
                    $this->value['border']['t'] = $val;
                    $this->value['border']['r'] = $val;
                    $this->value['border']['b'] = $val;
                    $this->value['border']['l'] = $val;
                    break;

                case 'border-style':
                    $val = explode(' ', $val);
                    foreach ($val as $valK => $valV) {
                        if (!in_array($valV, array('solid', 'dotted', 'dashed'))) {
                            $val[$valK] = null;
                        }
                    }
                    $this->_duplicateBorder($val);
                    if ($val[0]) $this->value['border']['t']['type'] = $val[0];
                    if ($val[1]) $this->value['border']['r']['type'] = $val[1];
                    if ($val[2]) $this->value['border']['b']['type'] = $val[2];
                    if ($val[3]) $this->value['border']['l']['type'] = $val[3];
                    break;

                case 'border-top-style':
                    if (in_array($val, array('solid', 'dotted', 'dashed'))) {
                        $this->value['border']['t']['type'] = $val;
                    }
                    break;

                case 'border-right-style':
                    if (in_array($val, array('solid', 'dotted', 'dashed'))) {
                        $this->value['border']['r']['type'] = $val;
                    }
                    break;

                case 'border-bottom-style':
                    if (in_array($val, array('solid', 'dotted', 'dashed'))) {
                        $this->value['border']['b']['type'] = $val;
                    }
                    break;

                case 'border-left-style':
                    if (in_array($val, array('solid', 'dotted', 'dashed')))
                        $this->value['border']['l']['type'] = $val;
                    break;

                case 'border-color':
                    $res = false;
                    $val = preg_replace('/,[\s]+/', ',', $val);
                    $val = explode(' ', $val);
                    foreach ($val as $valK => $valV) {
                            $val[$valK] = $this->convertToColor($valV, $res);
                            if (!$res) {
                                $val[$valK] = null;
                            }
                    }
                    $this->_duplicateBorder($val);
                    if (is_array($val[0])) $this->value['border']['t']['color'] = $val[0];
                    if (is_array($val[1])) $this->value['border']['r']['color'] = $val[1];
                    if (is_array($val[2])) $this->value['border']['b']['color'] = $val[2];
                    if (is_array($val[3])) $this->value['border']['l']['color'] = $val[3];

                    break;

                case 'border-top-color':
                    $res = false;
                    $val = $this->convertToColor($val, $res);
                    if ($res) $this->value['border']['t']['color'] = $val;
                    break;

                case 'border-right-color':
                    $res = false;
                    $val = $this->convertToColor($val, $res);
                    if ($res) $this->value['border']['r']['color'] = $val;
                    break;

                case 'border-bottom-color':
                    $res = false;
                    $val = $this->convertToColor($val, $res);
                    if ($res) $this->value['border']['b']['color'] = $val;
                    break;

                case 'border-left-color':
                    $res = false;
                    $val = $this->convertToColor($val, $res);
                    if ($res) $this->value['border']['l']['color'] = $val;
                    break;

                case 'border-width':
                    $val = explode(' ', $val);
                    foreach ($val as $valK => $valV) {
                            $val[$valK] = $this->convertToMM($valV, 0);
                    }
                    $this->_duplicateBorder($val);
                    if ($val[0]) $this->value['border']['t']['width'] = $val[0];
                    if ($val[1]) $this->value['border']['r']['width'] = $val[1];
                    if ($val[2]) $this->value['border']['b']['width'] = $val[2];
                    if ($val[3]) $this->value['border']['l']['width'] = $val[3];
                    break;

                case 'border-top-width':
                    $val = $this->convertToMM($val, 0);
                    if ($val) $this->value['border']['t']['width'] = $val;
                    break;

                case 'border-right-width':
                    $val = $this->convertToMM($val, 0);
                    if ($val) $this->value['border']['r']['width'] = $val;
                    break;

                case 'border-bottom-width':
                    $val = $this->convertToMM($val, 0);
                    if ($val) $this->value['border']['b']['width'] = $val;
                    break;

                case 'border-left-width':
                    $val = $this->convertToMM($val, 0);
                    if ($val) $this->value['border']['l']['width'] = $val;
                    break;

                case 'border-collapse':
                    if ($tagName=='table') $this->value['border']['collapse'] = ($val=='collapse');
                    break;

                case 'border-radius':
                    $val = explode('/', $val);
                    if (count($val)>2) {
                        break;
                    }
                    $valH = $this->convertToRadius(trim($val[0]));
                    if (count($valH)<1 || count($valH)>4) {
                        break;
                    }
                    if (!isset($valH[1])) $valH[1] = $valH[0];
                    if (!isset($valH[2])) $valH = array($valH[0], $valH[0], $valH[1], $valH[1]);
                    if (!isset($valH[3])) $valH[3] = $valH[1];
                    if (isset($val[1])) {
                        $valV = $this->convertToRadius(trim($val[1]));
                        if (count($valV)<1 || count($valV)>4) {
                            break;
                        }
                        if (!isset($valV[1])) $valV[1] = $valV[0];
                        if (!isset($valV[2])) $valV = array($valV[0], $valV[0], $valV[1], $valV[1]);
                        if (!isset($valV[3])) $valV[3] = $valV[1];
                    } else {
                        $valV = $valH;
                    }
                    $this->value['border']['radius'] = array(
                                'tl' => array($valH[0], $valV[0]),
                                'tr' => array($valH[1], $valV[1]),
                                'br' => array($valH[2], $valV[2]),
                                'bl' => array($valH[3], $valV[3])
                            );
                    break;

                case 'border-top-left-radius':
                    $val = $this->convertToRadius($val);
                    if (count($val)<1 || count($val)>2) {
                        break;
                    }
                    $this->value['border']['radius']['tl'] = array($val[0], isset($val[1]) ? $val[1] : $val[0]);
                    break;

                case 'border-top-right-radius':
                    $val = $this->convertToRadius($val);
                    if (count($val)<1 || count($val)>2) {
                        break;
                    }
                    $this->value['border']['radius']['tr'] = array($val[0], isset($val[1]) ? $val[1] : $val[0]);
                    break;

                case 'border-bottom-right-radius':
                    $val = $this->convertToRadius($val);
                    if (count($val)<1 || count($val)>2) {
                        break;
                    }
                    $this->value['border']['radius']['br'] = array($val[0], isset($val[1]) ? $val[1] : $val[0]);
                    break;

                case 'border-bottom-left-radius':
                    $val = $this->convertToRadius($val);
                    if (count($val)<1 || count($val)>2) {
                        break;
                    }
                    $this->value['border']['radius']['bl'] = array($val[0], isset($val[1]) ? $val[1] : $val[0]);
                    break;

                case 'border-top':
                    $this->value['border']['t'] = $this->readBorder($val);
                    break;

                case 'border-right':
                    $this->value['border']['r'] = $this->readBorder($val);
                    break;

                case 'border-bottom':
                    $this->value['border']['b'] = $this->readBorder($val);
                    break;

                case 'border-left':
                    $this->value['border']['l'] = $this->readBorder($val);
                    break;

                case 'background-color':
                    $this->value['background']['color'] = $this->convertBackgroundColor($val);
                    break;

                case 'background-image':
                    $this->value['background']['image'] = $this->convertBackgroundImage($val);
                    break;

                case 'background-position':
                    $res = null;
                    $this->value['background']['position'] = $this->convertBackgroundPosition($val, $res);
                    break;

                case 'background-repeat':
                    $this->value['background']['repeat'] = $this->convertBackgroundRepeat($val);
                    break;

                case 'background':
                    $this->convertBackground($val, $this->value['background']);
                    break;

                case 'position':
                    if ($val=='absolute')       $this->value['position'] = 'absolute';
                    else if ($val=='relative')  $this->value['position'] = 'relative';
                    else                        $this->value['position'] = null;
                    break;

                case 'float':
                    if ($val=='left')           $this->value['float'] = 'left';
                    else if ($val=='right')     $this->value['float'] = 'right';
                    else                        $this->value['float'] = null;
                    break;

                case 'display':
                    if ($val=='inline')         $this->value['display'] = 'inline';
                    else if ($val=='block')     $this->value['display'] = 'block';
                    else if ($val=='none')      $this->value['display'] = 'none';
                    else                        $this->value['display'] = null;
                    break;

                case 'top':
                case 'bottom':
                case 'left':
                case 'right':
                    $this->value[$nom] = $val;
                    break;

                case 'list-style':
                case 'list-style-type':
                case 'list-style-image':
                    if ($nom=='list-style') $nom = 'list-style-type';
                    $this->value[$nom] = $val;
                    break;

                default:
                    break;
            }
        }

        $return = true;

        // only for P tag
        if ($this->value['margin']['t']===null) $this->value['margin']['t'] = $this->value['font-size'];
        if ($this->value['margin']['b']===null) $this->value['margin']['b'] = $this->value['font-size'];

        // force the text align to left, if asked by html2pdf
        if ($this->_onlyLeft) $this->value['text-align'] = 'left';

        // correction on the width (quick box)
        if ($noWidth && in_array($tagName, array('div', 'blockquote', 'fieldset')) && $this->value['position']!='absolute') {
            $this->value['width'] = $this->getLastWidth();
            $this->value['width']-= $this->value['margin']['l'] + $this->value['margin']['r'];
        } else {
            if ($correctWidth) {
                if (!in_array($tagName, array('table', 'div', 'blockquote', 'fieldset', 'hr'))) {
                    $this->value['width']-= $this->value['padding']['l'] + $this->value['padding']['r'];
                    $this->value['width']-= $this->value['border']['l']['width'] + $this->value['border']['r']['width'];
                }
                if (in_array($tagName, array('th', 'td'))) {
                    $this->value['width']-= $this->convertToMM(isset($param['cellspacing']) ? $param['cellspacing'] : '2px');
                    $return = false;
                }
                if ($this->value['width']<0) $this->value['width']=0;
            } else {
                if ($this->value['width']) {
                    if ($this->value['border']['l']['width']) $this->value['width'] += $this->value['border']['l']['width'];
                    if ($this->value['border']['r']['width']) $this->value['width'] += $this->value['border']['r']['width'];
                    if ($this->value['padding']['l'])         $this->value['width'] += $this->value['padding']['l'];
                    if ($this->value['padding']['r'])         $this->value['width'] += $this->value['padding']['r'];
                }
            }
        }
        if ($this->value['height']) {
            if ($this->value['border']['b']['width']) $this->value['height'] += $this->value['border']['b']['width'];
            if ($this->value['border']['t']['width']) $this->value['height'] += $this->value['border']['t']['width'];
            if ($this->value['padding']['b'])         $this->value['height'] += $this->value['padding']['b'];
            if ($this->value['padding']['t'])         $this->value['height'] += $this->value['padding']['t'];
        }

        if ($this->value['top']!=null)      $this->value['top']     = $this->convertToMM($this->value['top'], $this->getLastHeight(true));
        if ($this->value['bottom']!=null)   $this->value['bottom']  = $this->convertToMM($this->value['bottom'], $this->getLastHeight(true));
        if ($this->value['left']!=null)     $this->value['left']    = $this->convertToMM($this->value['left'], $this->getLastWidth(true));
        if ($this->value['right']!=null)    $this->value['right']   = $this->convertToMM($this->value['right'], $this->getLastWidth(true));

        if ($this->value['top'] && $this->value['bottom'] && $this->value['height'])    $this->value['bottom']  = null;
        if ($this->value['left'] && $this->value['right'] && $this->value['width'])     $this->value['right']   = null;

        return $return;
    }

     /**
     * get the height of the current line
     *
     * @access public
     * @return float $height in mm
     */
    public function getLineHeight()
    {
        $val = $this->value['line-height'];
        if ($val=='normal') $val = '108%';
        return $this->convertToMM($val, $this->value['font-size']);
    }

     /**
     * get the width of the parent
     *
     * @access public
     * @param  boolean $mode true => adding padding and border
     * @return float $width in mm
     */
    public function getLastWidth($mode = false)
    {
        for ($k=count($this->table)-1; $k>=0; $k--) {
            if ($this->table[$k]['width']) {
                $w = $this->table[$k]['width'];
                if ($mode) {
                    $w+= $this->table[$k]['border']['l']['width'] + $this->table[$k]['padding']['l'] + 0.02;
                    $w+= $this->table[$k]['border']['r']['width'] + $this->table[$k]['padding']['r'] + 0.02;
                }
                return $w;
            }
        }
        return $this->_pdf->getW() - $this->_pdf->getlMargin() - $this->_pdf->getrMargin();
    }

     /**
     * get the height of the parent
     *
     * @access public
     * @param  boolean $mode true => adding padding and border
     * @return float $height in mm
     */
    public function getLastHeight($mode = false)
    {
        for ($k=count($this->table)-1; $k>=0; $k--) {
            if ($this->table[$k]['height']) {
                $h = $this->table[$k]['height'];
                if ($mode) {
                    $h+= $this->table[$k]['border']['t']['width'] + $this->table[$k]['padding']['t'] + 0.02;
                    $h+= $this->table[$k]['border']['b']['width'] + $this->table[$k]['padding']['b'] + 0.02;
                }
                return $h;
            }
        }
        return $this->_pdf->getH() - $this->_pdf->gettMargin() - $this->_pdf->getbMargin();
    }

    /**
     * get the value of the float property
     *
     * @access public
     * @return $float left/right
     */
    public function getFloat()
    {
        if ($this->value['float']=='left')    return 'left';
        if ($this->value['float']=='right')   return 'right';
        return null;
    }

    /**
     * get the last value for a specific key
     *
     * @access public
     * @param  string $key
     * @return mixed
     */
    public function getLastValue($key)
    {
        $nb = count($this->table);
        if ($nb>0) {
            return $this->table[$nb-1][$key];
        } else {
            return null;
        }
    }

    /**
     * get the last absolute X
     *
     * @access protected
     * @return float $x
     */
    protected function _getLastAbsoluteX()
    {
        for ($k=count($this->table)-1; $k>=0; $k--) {
            if ($this->table[$k]['x'] && $this->table[$k]['position']) return $this->table[$k]['x'];
        }
        return $this->_pdf->getlMargin();
    }

    /**
     * get the last absolute Y
     *
     * @access protected
     * @return float $y
     */
    protected function _getLastAbsoluteY()
    {
        for ($k=count($this->table)-1; $k>=0; $k--) {
            if ($this->table[$k]['y'] && $this->table[$k]['position']) return $this->table[$k]['y'];
        }
        return $this->_pdf->gettMargin();
    }

    /**
     * get the CSS properties of the current tag
     *
     * @access protected
     * @return array $styles
     */
    protected function _getFromCSS()
    {
        // styles to apply
        $styles = array();

        // list of the selectors to get in the CSS files
        $getit  = array();

        // get the list of the selectors of each tags
        $lst = array();
        $lst[] = $this->value['id_lst'];
        for ($i=count($this->table)-1; $i>=0; $i--) {
            $lst[] = $this->table[$i]['id_lst'];
        }

        // foreach selectors in the CSS files, verify if it match with the list of selectors
        foreach ($this->cssKeys as $key => $num) {
            if ($this->_getReccursiveStyle($key, $lst)) {
                $getit[$key] = $num;
            }
        }

        // if we have selectors
        if (count($getit)) {
            // get them, but in the definition order, because of priority
            asort($getit);
            foreach ($getit as $key => $val) $styles = array_merge($styles, $this->css[$key]);
        }

        return $styles;
    }

    /**
     * identify if the selector $key match with the list of tag selectors
     *
     * @access protected
     * @param  string   $key CSS selector to analyse
     * @param  array    $lst list of the selectors of each tags
     * @param  string   $next next step of parsing the selector
     * @return boolean
     */
    protected function _getReccursiveStyle($key, $lst, $next = null)
    {
        // if next step
        if ($next!==null) {
            // we remove this step
            if ($next) $key = trim(substr($key, 0, -strlen($next)));
            array_shift($lst);

            // if no more step to identify => return false
            if (!count($lst)) {
                return false;
            }
        }

        // for each selector of the current step
        foreach ($lst[0] as $name) {
            // if selector = key => ok
            if ($key==$name) {
                return true;
            }

            // if the end of the key = the selector and the next step is ok => ok
            if (substr($key, -strlen(' '.$name))==' '.$name && $this->_getReccursiveStyle($key, $lst, $name)) {
                return true;
            }
        }

        // if we are not in the first step, we analyse the sub steps (the pareng tag of the current tag)
        if ($next!==null && $this->_getReccursiveStyle($key, $lst, '')) {
            return true;
        }

        // no corresponding found
        return false;
    }

    /**
     * Analyse a border
     *
     * @access  public
     * @param   string $css css border properties
     * @return  array  border properties
     */
    public function readBorder($css)
    {
        // border none
        $none = array('type' => 'none', 'width' => 0, 'color' => array(0, 0, 0));

        // default value
        $type  = 'solid';
        $width = $this->convertToMM('1pt');
        $color = array(0, 0, 0);

        // clean up the values
        $css = explode(' ', $css);
        foreach ($css as $k => $v) {
            $v = trim($v);
            if ($v) $css[$k] = $v;
            else    unset($css[$k]);
        }
        $css = array_values($css);

        // read the values
        $res = null;
        foreach ($css as $value) {

            // if no border => return none
            if ($value=='none' || $value=='hidden') {
                return $none;
            }

            // try to convert the value as a distance
            $tmp = $this->convertToMM($value);

            // if the convert is ok => it is a width
            if ($tmp!==null) {
                $width = $tmp;
            // else, it could be the type
            } else if (in_array($value, array('solid', 'dotted', 'dashed', 'double'))) {
                $type = $value;
            // else, it could be the color
            } else {
                $tmp = $this->convertToColor($value, $res);
                if ($res) $color = $tmp;
            }
        }

        // if no witdh => return none
        if (!$width) return $none;

        // return the border properties
        return array('type' => $type, 'width' => $width, 'color' => $color);
    }

    /**
     * duplicate the borders if needed
     *
     * @access protected
     * @param  &array $val
     */
    protected function _duplicateBorder(&$val)
    {
        // 1 value => L => RTB
        if (count($val)==1) {
            $val[1] = $val[0];
            $val[2] = $val[0];
            $val[3] = $val[0];
        // 2 values => L => R & T => B
        } else if (count($val)==2) {
            $val[2] = $val[0];
            $val[3] = $val[1];
        // 3 values => T => B
        } else if (count($val)==3) {
            $val[3] = $val[1];
        }
    }

    /**
     * Analyse a background
     *
     * @access public
     * @param  string $css css background properties
     * @param  &array $value parsed values (by reference, because, ther is a legacy of the parent CSS properties)
     */
    public function convertBackground($css, &$value)
    {
        // is there a image ?
        $text = '/url\(([^)]*)\)/isU';
        if (preg_match($text, $css, $match)) {
            // get the image
            $value['image'] = $this->convertBackgroundImage($match[0]);

            // remove if from the css properties
            $css = preg_replace($text, '', $css);
            $css = preg_replace('/[\s]+/', ' ', $css);
        }

        // protect some spaces
        $css = preg_replace('/,[\s]+/', ',', $css);

        // explode the values
        $css = explode(' ', $css);

        // background position to parse
        $pos = '';

        // foreach value
        foreach ($css as $val) {
            // try to parse the value as a color
            $ok = false;
            $color = $this->convertToColor($val, $ok);

            // if ok => it is a color
            if ($ok) {
                $value['color'] = $color;
            // else if transparent => no coloàr
            } else if ($val=='transparent') {
                $value['color'] = null;
            // else
            } else {
                // try to parse the value as a repeat
                $repeat = $this->convertBackgroundRepeat($val);

                // if ok => it is repeat
                if ($repeat) {
                    $value['repeat'] = $repeat;
                // else => it could only be a position
                } else {
                    $pos.= ($pos ? ' ' : '').$val;
                }
            }
        }

        // if we have a position to parse
        if ($pos) {
            // try to read it
            $pos = $this->convertBackgroundPosition($pos, $ok);
            if ($ok) $value['position'] = $pos;
        }
    }

    /**
     * parse a background color
     *
     * @access public
     * @param  string $css
     * @return string $value
     */
    public function convertBackgroundColor($css)
    {
        $res = null;
        if ($css=='transparent') return null;
        else                     return $this->convertToColor($css, $res);
    }

    /**
     * parse a background image
     *
     * @access public
     * @param  string $css
     * @return string $value
     */
    public function convertBackgroundImage($css)
    {
        if ($css=='none')
            return null;
        else if (preg_match('/^url\(([^)]*)\)$/isU', $css, $match))
            return $match[1];
        else
            return null;
    }

    /**
     * parse a background position
     *
     * @access public
     * @param  string $css
     * @param  &boolean $res flag if conver is ok or not
     * @return array ($x, $y)
     */
    public function convertBackgroundPosition($css, &$res)
    {
        // init the res
        $res = false;

        // explode the value
        $css = explode(' ', $css);

        // we must have 2 values. if 0 or >2 : error. if 1 => put center for 2
        if (count($css)<2) {
            if (!$css[0]) return null;
            $css[1] = 'center';
        }
        if (count($css)>2) return null;

        // prepare the values
        $x = 0;
        $y = 0;
        $res = true;

        // convert the first value
        if ($css[0]=='left')        $x = '0%';
        else if ($css[0]=='center') $x = '50%';
        else if ($css[0]=='right')  $x = '100%';
        else if ($css[0]=='top')    $y = '0%';
        else if ($css[0]=='bottom') $y = '100%';
        else if (preg_match('/^[-]?[0-9\.]+%$/isU', $css[0])) $x = $css[0];
        else if ($this->convertToMM($css[0])) $x = $this->convertToMM($css[0]);
        else $res = false;

        // convert the second value
        if ($css[1]=='left')        $x = '0%';
        else if ($css[1]=='right')  $x = '100%';
        else if ($css[1]=='top')    $y = '0%';
        else if ($css[1]=='center') $y = '50%';
        else if ($css[1]=='bottom') $y = '100%';
        else if (preg_match('/^[-]?[0-9\.]+%$/isU', $css[1])) $y = $css[1];
        else if ($this->convertToMM($css[1])) $y = $this->convertToMM($css[1]);
        else $res = false;

        // return the values
        return array($x, $y);
    }

    /**
     * parse a background repeat
     *
     * @access public
     * @param  string $css
     * @return string $value
     */
    public function convertBackgroundRepeat($css)
    {
        switch($css)
        {
            case 'repeat':
                return array(true, true);
            case 'repeat-x':
                return array(true, false);
            case 'repeat-y':
                return array(false, true);
            case 'no-repeat':
                return array(false, false);
        }
        return null;
    }

     /**
     * convert a distance to mm
     *
     * @access public
     * @param  string $css distance to convert
     * @param  float  $old parent distance
     * @return float  $value
     */
    public function convertToMM($css, $old=0.)
    {
        $css = trim($css);
        if (preg_match('/^[0-9\.\-]+$/isU', $css))        $css.= 'px';
        if (preg_match('/^[0-9\.\-]+px$/isU', $css))      $css = 25.4/96. * str_replace('px', '', $css);
        else if (preg_match('/^[0-9\.\-]+pt$/isU', $css)) $css = 25.4/72. * str_replace('pt', '', $css);
        else if (preg_match('/^[0-9\.\-]+in$/isU', $css)) $css = 25.4 * str_replace('in', '', $css);
        else if (preg_match('/^[0-9\.\-]+mm$/isU', $css)) $css = 1.*str_replace('mm', '', $css);
        else if (preg_match('/^[0-9\.\-]+%$/isU', $css))  $css = 1.*$old*str_replace('%', '', $css)/100.;
        else                                              $css = null;

        return $css;
    }

    /**
     * convert a css radius
     *
     * @access public
     * @param  string $css
     * @return float  $value
     */
    public function convertToRadius($css)
    {
        // explode the value
        $css = explode(' ', $css);

        foreach ($css as $k => $v) {
            $v = trim($v);
            if ($v) {
                $v = $this->convertToMM($v, 0);
                if ($v!==null) {
                    $css[$k] = $v;
                } else {
                    unset($css[$k]);
                }
            } else {
                unset($css[$k]);
            }
        }

        return array_values($css);
    }

    /**
     * convert a css color
     *
     * @access public
     * @param  string $css
     * @param  &boolean $res
     * @return array (r,g, b)
     */
    public function convertToColor($css, &$res)
    {
        // prepare the value
        $css = trim($css);
        $res = true;

        // if transparent => return null
        if (strtolower($css)=='transparent') return array(null, null, null);

        // HTML color
        if (isset($this->_htmlColor[strtolower($css)])) {
            $css = $this->_htmlColor[strtolower($css)];
            $r = floatVal(hexdec(substr($css, 0, 2)));
            $v = floatVal(hexdec(substr($css, 2, 2)));
            $b = floatVal(hexdec(substr($css, 4, 2)));
            return array($r, $v, $b);
        }

        // like #FFFFFF
        if (preg_match('/^#[0-9A-Fa-f]{6}$/isU', $css)) {
            $r = floatVal(hexdec(substr($css, 1, 2)));
            $v = floatVal(hexdec(substr($css, 3, 2)));
            $b = floatVal(hexdec(substr($css, 5, 2)));
            return array($r, $v, $b);
        }

        // like #FFF
        if (preg_match('/^#[0-9A-F]{3}$/isU', $css)) {
            $r = floatVal(hexdec(substr($css, 1, 1).substr($css, 1, 1)));
            $v = floatVal(hexdec(substr($css, 2, 1).substr($css, 2, 1)));
            $b = floatVal(hexdec(substr($css, 3, 1).substr($css, 3, 1)));
            return array($r, $v, $b);
        }

        // like rgb(100, 100, 100)
        if (preg_match('/rgb\([\s]*([0-9%\.]+)[\s]*,[\s]*([0-9%\.]+)[\s]*,[\s]*([0-9%\.]+)[\s]*\)/isU', $css, $match)) {
            $r = $this->_convertSubColor($match[1]);
            $v = $this->_convertSubColor($match[2]);
            $b = $this->_convertSubColor($match[3]);
            return array($r*255., $v*255., $b*255.);
        }

        // like cmyk(100, 100, 100, 100)
        if (preg_match('/cmyk\([\s]*([0-9%\.]+)[\s]*,[\s]*([0-9%\.]+)[\s]*,[\s]*([0-9%\.]+)[\s]*,[\s]*([0-9%\.]+)[\s]*\)/isU', $css, $match)) {
            $c = $this->_convertSubColor($match[1]);
            $m = $this->_convertSubColor($match[2]);
            $y = $this->_convertSubColor($match[3]);
            $k = $this->_convertSubColor($match[4]);
            return array($c*100., $m*100., $y*100., $k*100.);
        }

        $res = false;
        return array(0., 0., 0.);
    }

    /**
     * color value to convert
     *
     * @access protected
     * @param  string $c
     * @return float $c 0.->1.
     */
    protected function _convertSubColor($c)
    {
        if (substr($c, -1)=='%') {
            $c = floatVal(substr($c, 0, -1))/100.;
        } else {
            $c = floatVal($c);
            if ($c>1) $c = $c/255.;
        }

        return $c;
    }

    /**
     * read a css content
     *
     * @access protected
     * @param  &string $code
     */
    protected function _analyseStyle(&$code)
    {
        // clean the spaces
        $code = preg_replace('/[\s]+/', ' ', $code);

        // remove the comments
        $code = preg_replace('/\/\*.*?\*\//s', '', $code);

        // split each CSS code "selector { value }"
        preg_match_all('/([^{}]+){([^}]*)}/isU', $code, $match);

        // for each CSS code
        for ($k=0; $k<count($match[0]); $k++) {

            // selectors
            $names = strtolower(trim($match[1][$k]));

            // css style
            $styles = trim($match[2][$k]);

            // explode each value
            $styles = explode(';', $styles);

            // parse each value
            $css = array();
            foreach ($styles as $style) {
                $tmp = explode(':', $style);
                if (count($tmp)>1) {
                    $cod = $tmp[0]; unset($tmp[0]); $tmp = implode(':', $tmp);
                    $css[trim(strtolower($cod))] = trim($tmp);
                }
            }

            // explode the names
            $names = explode(',', $names);

            // save the values for each names
            foreach ($names as $name) {
                // clean the name
                $name = trim($name);

                // if a selector with somethink lige :hover => continue
                if (strpos($name, ':')!==false) continue;

                // save the value
                if (!isset($this->css[$name]))
                    $this->css[$name] = $css;
                else
                    $this->css[$name] = array_merge($this->css[$name], $css);

            }
        }

        // get he list of the keys
        $this->cssKeys = array_flip(array_keys($this->css));
    }

    /**
     * Extract the css files from a html code
     *
     * @access public
     * @param  string   &$html
     */
    public function readStyle(&$html)
    {
        // the CSS content
        $style = ' ';

        // extract the link tags, and remove them in the html code
        preg_match_all('/<link([^>]*)>/isU', $html, $match);
        $html = preg_replace('/<link[^>]*>/isU', '', $html);
        $html = preg_replace('/<\/link[^>]*>/isU', '', $html);

        // analyse each link tag
        foreach ($match[1] as $code) {
            $tmp = array();

            // read the attributes name=value
            $prop = '([a-zA-Z0-9_]+)=([^"\'\s>]+)';
            preg_match_all('/'.$prop.'/is', $code, $match);
            for ($k=0; $k<count($match[0]); $k++) {
                $tmp[trim(strtolower($match[1][$k]))] = trim($match[2][$k]);
            }

            // read the attributes name="value"
            $prop = '([a-zA-Z0-9_]+)=["]([^"]*)["]';
            preg_match_all('/'.$prop.'/is', $code, $match);
            for ($k=0; $k<count($match[0]); $k++) {
                $tmp[trim(strtolower($match[1][$k]))] = trim($match[2][$k]);
            }

            // read the attributes name='value'
            $prop = "([a-zA-Z0-9_]+)=[']([^']*)[']";
            preg_match_all('/'.$prop.'/is', $code, $match);
            for ($k=0; $k<count($match[0]); $k++) {
                $tmp[trim(strtolower($match[1][$k]))] = trim($match[2][$k]);
            }

            // if type text/css => we keep it
            if (isset($tmp['type']) && strtolower($tmp['type'])=='text/css' && isset($tmp['href'])) {

                // get the href
                $url = $tmp['href'];

                // get the content of the css file
                $content = @file_get_contents($url);

                // if "http://" in the url
                if (strpos($url, 'http://')!==false) {

                    // get the domain "http://xxx/"
                    $url = str_replace('http://', '', $url);
                    $url = explode('/', $url);
                    $urlMain = 'http://'.$url[0].'/';

                    // get the absolute url of the path
                    $urlSelf = $url; unset($urlSelf[count($urlSelf)-1]); $urlSelf = 'http://'.implode('/', $urlSelf).'/';

                    // adapt the url in the css content
                    $content = preg_replace('/url\(([^\\\\][^)]*)\)/isU', 'url('.$urlSelf.'$1)', $content);
                    $content = preg_replace('/url\((\\\\[^)]*)\)/isU', 'url('.$urlMain.'$1)', $content);
                } else {
// @TODO correction on url in absolute on a local css content
                    // $content = preg_replace('/url\(([^)]*)\)/isU', 'url('.dirname($url).'/$1)', $content);
                }

                // add to the CSS content
                $style.= $content."\n";
            }
        }

        // extract the style tags des tags style, and remove them in the html code
        preg_match_all('/<style[^>]*>(.*)<\/style[^>]*>/isU', $html, $match);
        $html = preg_replace('/<style[^>]*>(.*)<\/style[^>]*>/isU', '', $html);

        // analyse each style tags
        foreach ($match[1] as $code) {
            // add to the CSS content
            $code = str_replace('<!--', '', $code);
            $code = str_replace('-->', '', $code);
            $style.= $code."\n";
        }

        //analyse the css content
        $this->_analyseStyle($style);
    }
}