protected static function _set_basefont_size($node, $value)
{
// FIXME: ? we don't actually set the font size of anything here, just
// the base size for later modification by <font> tags.
self::$_last_basefont_size = $value;
return null;
}
/**
* applies all current styles to a particular document tree
*
* apply_styles() applies all currently loaded styles to the provided
* {@link FrameParser_Tree}. Aside from parsing CSS, this is the main purpose
* of this class.
*
* @param FrameParser_Tree $tree
*/
function apply_styles(FrameParser_Tree $tree)
{
// Use XPath to select nodes. This would be easier if we could attach
// FrameParser objects directly to DOMNodes using the setUserData() method, but
// we can't do that just yet. Instead, we set a _node attribute_ in
// FrameParser->set_id() and use that as a handle on the FrameParser object via
// FrameParser_Tree::$_registry.
// We create a scratch array of styles indexed by frame id. Once all
// styles have been assigned, we order the cached styles by specificity
// and create a final style object to assign to the frame.
// FIXME: this is not particularly robust...
$styles = array();
$xp = new DOMXPath($tree->get_dom());
// Add generated content
foreach ($this->_styles as $selector => $style) {
if (strpos($selector, ":before") === false && strpos($selector, ":after") === false) {
continue;
}
$query = $this->_css_selector_to_xpath($selector, true);
// Retrieve the nodes
$nodes = @$xp->query($query["query"]);
if ($nodes == null) {
record_warnings_parser(E_USER_WARNING, "The CSS selector '{$selector}' is not valid", __FILE__, __LINE__);
continue;
}
foreach ($nodes as $i => $node) {
foreach ($query["pseudo_elements"] as $pos) {
if (($src = $this->_image($style->content)) !== "none") {
$new_node = $node->ownerDocument->createElement("img_generated");
$new_node->setAttribute("src", $src);
} else {
$new_node = $node->ownerDocument->createElement("dompdf_generated");
}
$new_node->setAttribute($pos, $pos);
$tree->insert_node($node, $new_node, $pos);
}
}
}
// Apply all styles in stylesheet
foreach ($this->_styles as $selector => $style) {
$query = $this->_css_selector_to_xpath($selector);
// Retrieve the nodes
$nodes = @$xp->query($query["query"]);
if ($nodes == null) {
record_warnings_parser(E_USER_WARNING, "The CSS selector '{$selector}' is not valid", __FILE__, __LINE__);
continue;
}
foreach ($nodes as $node) {
// Retrieve the node id
if ($node->nodeType != XML_ELEMENT_NODE) {
// Only DOMElements get styles
continue;
}
$id = $node->getAttribute("frame_id");
// Assign the current style to the scratch array
$spec = $this->_specificity($selector);
$styles[$id][$spec][] = $style;
}
}
// Now create the styles and assign them to the appropriate frames. (We
// iterate over the tree using an implicit FrameParser_Tree iterator.)
$root_flg = false;
foreach ($tree->get_frames() as $frame) {
// pre_r($frame->get_node()->nodeName . ":");
if (!$root_flg && $this->_page_style) {
$style = $this->_page_style;
$root_flg = true;
} else {
$style = $this->create_style();
}
// Find nearest DOMElement parent
$p = $frame;
while ($p = $p->get_parent()) {
if ($p->get_node()->nodeType == XML_ELEMENT_NODE) {
break;
}
}
// StyleParsers can only be applied directly to DOMElements; anonymous
// frames inherit from their parent
if ($frame->get_node()->nodeType != XML_ELEMENT_NODE) {
if ($p) {
$style->inherit($p->get_style());
}
$frame->set_style($style);
continue;
}
$id = $frame->get_id();
// Handle HTML 4.0 attributes
Attribute_Translator_Parser::translate_attributes($frame);
// Locate any additional style attributes
if (($str = $frame->get_node()->getAttribute("style")) !== "") {
// Destroy CSS comments
$str = preg_replace("'/\\*.*?\\*/'si", "", $str);
$spec = $this->_specificity("!style attribute");
$styles[$id][$spec][] = $this->_parse_properties($str);
}
// Grab the applicable styles
if (isset($styles[$id])) {
$applied_styles = $styles[$frame->get_id()];
// Sort by specificity
ksort($applied_styles);
// Merge the new styles with the inherited styles
foreach ($applied_styles as $arr) {
foreach ($arr as $s) {
$style->merge($s);
}
}
}
// Inherit parent's styles if required
if ($p) {
$style->inherit($p->get_style());
}
$frame->set_style($style);
}
// We're done! Clean out the registry of all styles since we
// won't be needing this later.
foreach (array_keys($this->_styles) as $key) {
$this->_styles[$key] = null;
unset($this->_styles[$key]);
}
}