Subversion-Projekte lars-tiefland.php_share

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Revision Autor Zeilennr. Zeile
1 lars 1 
<?php
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require_once(HTML2PS_DIR.'value.generic.php');
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class Value extends CSSValue {
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  /**
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   * Type of unit this value is measured with
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   */
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  var $_unit;
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  var $_number;
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  var $_points;
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  function scale($scale) {
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    $this->_number *= $scale;
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    $this->_points *= $scale;
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  }
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  function &copy() {
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    $value =& new Value;
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    $value->_unit   = $this->_unit;
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    $value->_number = $this->_number;
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    $value->_points = $this->_points;
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    return $value;
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  }
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  function getPoints() {
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    return $this->_points;
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  }
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  function Value() {
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    $this->_unit   = UNIT_PT;
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    $this->_number = 0;
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    $this->_points = 0;
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  }
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  function &fromData($number, $unit) {
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    $value =& new Value;
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    $value->_unit   = $unit;
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    $value->_number = $number;
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    $value->_points = 0;
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    return $value;
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  }
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  /**
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   * Create  new  object using  data  contained  in  string CSS  value
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   * representation
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   */
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  function &fromString($string_value) {
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    $value =& new Value;
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    $value->_unit   = $value->unit_from_string($string_value);
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    $value->_number = (double)$string_value;
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    $value->_points = 0;
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    return $value;
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  }
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  /**
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   * @static
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   */
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  function unit_from_string($value) {
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    $unit = substr($value, strlen($value)-2, 2);
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    switch ($unit) {
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    case 'pt':
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      return UNIT_PT;
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    case 'px':
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      return UNIT_PX;
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    case 'mm':
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      return UNIT_MM;
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    case 'cm':
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      return UNIT_CM;
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    case 'ex':
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      return UNIT_EX;
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    case 'em':
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      return UNIT_EM;
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    case 'in':
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      return UNIT_IN;
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    case 'pc':
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      return UNIT_PC;
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    default:
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      return UNIT_NONE;
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    }
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  }
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  function units2pt($font_size) {
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    $this->_points = $this->toPt($font_size);
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  }
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  function toPt($font_size) {
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    switch ($this->_unit) {
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    case UNIT_PT:
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      return pt2pt($this->_number);
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    case UNIT_PX:
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      return px2pt($this->_number);
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    case UNIT_MM:
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      return pt2pt(mm2pt($this->_number));
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    case UNIT_CM:
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      return pt2pt(mm2pt($this->_number*10));
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    case UNIT_EM:
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      return em2pt($this->_number, $font_size);
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    case UNIT_EX:
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      return ex2pt($this->_number, $font_size);
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    case UNIT_IN:
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      return pt2pt($this->_number * 72); // points used by CSS 2.1 are equal to 1/72nd of an inch.
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    case UNIT_PC:
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      return pt2pt($this->_number * 12); // 1 pica equals to 12 points.
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    default:
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      global $g_config;
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      if ($g_config['mode'] === 'quirks') {
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        return px2pt($this->_number);
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      } else {
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        return 0;
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      };
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    };
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  }
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}
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?>