/**
* Optimization: _readCSSLength is usually called several times
* while initializing box object. $base_font_size cound be calculated
* only once and stored in a static variable.
*/
function _readCSSLengths($state, $property_list)
{
if (is_null($this->_cached_base_font_size)) {
$font =& $this->getCSSProperty(CSS_FONT);
if (!$font) {
$font = CSSFont::default_value();
}
$this->_cached_base_font_size = $font->size->getPoints();
}
foreach ($property_list as $property) {
$value =& $state->getProperty($property);
if ($value === CSS_PROPERTY_INHERIT) {
$value =& $state->getInheritedProperty($property);
}
if (is_object($value)) {
$value =& $value->copy();
$value->doInherit($state);
$value->units2pt($this->_cached_base_font_size);
}
$this->setCSSProperty($property, $value);
}
}
function _get_font_name(&$viewport, $subword_index)
{
if (isset($this->_cache[CACHE_TYPEFACE][$subword_index])) {
return $this->_cache[CACHE_TYPEFACE][$subword_index];
}
$font_resolver =& $viewport->get_font_resolver();
$font = $this->getCSSProperty(CSS_FONT);
if (!$font) {
$font = CSSFont::default_value();
}
$typeface = $font_resolver->getTypefaceName($font->family, $font->weight, $font->style, $this->encodings[$subword_index]);
$this->_cache[CACHE_TYPEFACE][$subword_index] = $typeface;
return $typeface;
}