253 lines
6.6 KiB
PHP
253 lines
6.6 KiB
PHP
<?php
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/**
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* @package dompdf
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* @link http://dompdf.github.com/
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* @author Benj Carson <benjcarson@digitaljunkies.ca>
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* @license http://www.gnu.org/copyleft/lesser.html GNU Lesser General Public License
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*/
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/**
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* Contains frame decorating logic
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*
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* This class is responsible for assigning the correct {@link Frame_Decorator},
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* {@link Positioner}, and {@link Frame_Reflower} objects to {@link Frame}
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* objects. This is determined primarily by the Frame's display type, but
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* also by the Frame's node's type (e.g. DomElement vs. #text)
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*
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* @access private
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* @package dompdf
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*/
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class Frame_Factory {
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/**
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* Decorate the root Frame
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*
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* @param $root Frame The frame to decorate
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* @param $dompdf DOMPDF The dompdf instance
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* @return Page_Frame_Decorator
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*/
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static function decorate_root(Frame $root, DOMPDF $dompdf) {
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$frame = new Page_Frame_Decorator($root, $dompdf);
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$frame->set_reflower( new Page_Frame_Reflower($frame) );
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$root->set_decorator($frame);
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return $frame;
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}
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/**
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* Decorate a Frame
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*
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* @param Frame $frame The frame to decorate
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* @param DOMPDF $dompdf The dompdf instance
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* @param Frame $root The frame to decorate
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*
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* @throws DOMPDF_Exception
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* @return Frame_Decorator
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* FIXME: this is admittedly a little smelly...
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*/
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static function decorate_frame(Frame $frame, DOMPDF $dompdf, Frame $root = null) {
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if ( is_null($dompdf) ) {
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throw new DOMPDF_Exception("The DOMPDF argument is required");
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}
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$style = $frame->get_style();
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// Floating (and more generally out-of-flow) elements are blocks
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// http://coding.smashingmagazine.com/2007/05/01/css-float-theory-things-you-should-know/
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if ( !$frame->is_in_flow() && in_array($style->display, Style::$INLINE_TYPES)) {
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$style->display = "block";
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}
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$display = $style->display;
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switch ($display) {
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case "block":
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$positioner = "Block";
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$decorator = "Block";
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$reflower = "Block";
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break;
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case "inline-block":
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$positioner = "Inline";
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$decorator = "Block";
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$reflower = "Block";
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break;
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case "inline":
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$positioner = "Inline";
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if ( $frame->is_text_node() ) {
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$decorator = "Text";
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$reflower = "Text";
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}
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else {
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$enable_css_float = $dompdf->get_option("enable_css_float");
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if ( $enable_css_float && $style->float !== "none" ) {
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$decorator = "Block";
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$reflower = "Block";
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}
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else {
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$decorator = "Inline";
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$reflower = "Inline";
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}
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}
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break;
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case "table":
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$positioner = "Block";
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$decorator = "Table";
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$reflower = "Table";
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break;
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case "inline-table":
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$positioner = "Inline";
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$decorator = "Table";
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$reflower = "Table";
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break;
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case "table-row-group":
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case "table-header-group":
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case "table-footer-group":
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$positioner = "Null";
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$decorator = "Table_Row_Group";
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$reflower = "Table_Row_Group";
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break;
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case "table-row":
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$positioner = "Null";
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$decorator = "Table_Row";
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$reflower = "Table_Row";
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break;
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case "table-cell":
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$positioner = "Table_Cell";
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$decorator = "Table_Cell";
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$reflower = "Table_Cell";
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break;
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case "list-item":
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$positioner = "Block";
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$decorator = "Block";
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$reflower = "Block";
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break;
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case "-dompdf-list-bullet":
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if ( $style->list_style_position === "inside" ) {
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$positioner = "Inline";
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}
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else {
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$positioner = "List_Bullet";
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}
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if ( $style->list_style_image !== "none" ) {
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$decorator = "List_Bullet_Image";
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}
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else {
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$decorator = "List_Bullet";
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}
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$reflower = "List_Bullet";
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break;
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case "-dompdf-image":
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$positioner = "Inline";
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$decorator = "Image";
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$reflower = "Image";
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break;
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case "-dompdf-br":
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$positioner = "Inline";
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$decorator = "Inline";
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$reflower = "Inline";
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break;
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default:
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// FIXME: should throw some sort of warning or something?
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case "none":
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if ( $style->_dompdf_keep !== "yes" ) {
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// Remove the node and the frame
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$frame->get_parent()->remove_child($frame);
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return;
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}
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$positioner = "Null";
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$decorator = "Null";
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$reflower = "Null";
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break;
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}
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// Handle CSS position
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$position = $style->position;
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if ( $position === "absolute" ) {
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$positioner = "Absolute";
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}
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else if ( $position === "fixed" ) {
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$positioner = "Fixed";
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}
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$node = $frame->get_node();
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// Handle nodeName
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if ( $node->nodeName === "img" ) {
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$style->display = "-dompdf-image";
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$decorator = "Image";
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$reflower = "Image";
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}
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$positioner .= "_Positioner";
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$decorator .= "_Frame_Decorator";
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$reflower .= "_Frame_Reflower";
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$deco = new $decorator($frame, $dompdf);
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$deco->set_positioner( new $positioner($deco) );
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$deco->set_reflower( new $reflower($deco) );
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if ( $root ) {
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$deco->set_root($root);
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}
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if ( $display === "list-item" ) {
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// Insert a list-bullet frame
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$xml = $dompdf->get_dom();
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$bullet_node = $xml->createElement("bullet"); // arbitrary choice
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$b_f = new Frame($bullet_node);
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$node = $frame->get_node();
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$parent_node = $node->parentNode;
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if ( $parent_node ) {
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if ( !$parent_node->hasAttribute("dompdf-children-count") ) {
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$xpath = new DOMXPath($xml);
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$count = $xpath->query("li", $parent_node)->length;
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$parent_node->setAttribute("dompdf-children-count", $count);
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}
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if ( is_numeric($node->getAttribute("value")) ) {
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$index = intval($node->getAttribute("value"));
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}
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else {
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if ( !$parent_node->hasAttribute("dompdf-counter") ) {
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$index = ($parent_node->hasAttribute("start") ? $parent_node->getAttribute("start") : 1);
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}
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else {
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$index = $parent_node->getAttribute("dompdf-counter")+1;
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}
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}
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$parent_node->setAttribute("dompdf-counter", $index);
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$bullet_node->setAttribute("dompdf-counter", $index);
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}
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$new_style = $dompdf->get_css()->create_style();
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$new_style->display = "-dompdf-list-bullet";
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$new_style->inherit($style);
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$b_f->set_style($new_style);
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$deco->prepend_child( Frame_Factory::decorate_frame($b_f, $dompdf, $root) );
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}
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return $deco;
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}
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}
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