/**
* Renders the HTML to PDF
*/
public function render()
{
$this->saveLocale();
$logOutputFile = $this->options->getLogOutputFile();
if ($logOutputFile) {
if (!file_exists($logOutputFile) && is_writable(dirname($logOutputFile))) {
touch($logOutputFile);
}
$this->startTime = microtime(true);
ob_start();
}
$this->processHtml();
$this->css->apply_styles($this->tree);
// @page style rules : size, margins
$pageStyles = $this->css->get_page_styles();
$basePageStyle = $pageStyles["base"];
unset($pageStyles["base"]);
foreach ($pageStyles as $pageStyle) {
$pageStyle->inherit($basePageStyle);
}
if (is_array($basePageStyle->size)) {
$this->setPaper(array(0, 0, $basePageStyle->size[0], $basePageStyle->size[1]));
}
//TODO: We really shouldn't be doing this; properties were already set in the constructor. We should add Canvas methods to set the page size and orientation after instantiaion.
$this->setCanvas(CanvasFactory::get_instance($this, $this->paperSize, $this->paperOrientation));
$this->setFontMetrics(new FontMetrics($this->pdf, $this->getOptions()));
if ($this->options->isFontSubsettingEnabled() && $this->pdf instanceof CPDF) {
foreach ($this->tree->get_frames() as $frame) {
$style = $frame->get_style();
$node = $frame->get_node();
// Handle text nodes
if ($node->nodeName === "#text") {
$this->getCanvas()->register_string_subset($style->font_family, $node->nodeValue);
continue;
}
// Handle generated content (list items)
if ($style->display === "list-item") {
$chars = ListBullet::get_counter_chars($style->list_style_type);
$this->getCanvas()->register_string_subset($style->font_family, $chars);
continue;
}
// Handle other generated content (pseudo elements)
// FIXME: This only captures the text of the stylesheet declaration,
// not the actual generated content, and forces all possible counter
// values. See notes in issue #750.
if ($frame->get_node()->nodeName == "dompdf_generated") {
// all possible counter values
$chars = ListBullet::get_counter_chars('decimal');
$this->getCanvas()->register_string_subset($style->font_family, $chars);
$chars = ListBullet::get_counter_chars('upper-alpha');
$this->getCanvas()->register_string_subset($style->font_family, $chars);
$chars = ListBullet::get_counter_chars('lower-alpha');
$this->getCanvas()->register_string_subset($style->font_family, $chars);
$chars = ListBullet::get_counter_chars('lower-greek');
$this->getCanvas()->register_string_subset($style->font_family, $chars);
// the text of the stylesheet declaration
$this->getCanvas()->register_string_subset($style->font_family, $style->content);
continue;
}
}
}
$root = null;
foreach ($this->tree->get_frames() as $frame) {
// Set up the root frame
if (is_null($root)) {
$root = Factory::decorate_root($this->tree->get_root(), $this);
continue;
}
// Create the appropriate decorators, reflowers & positioners.
Factory::decorate_frame($frame, $this, $root);
}
// Add meta information
$title = $this->dom->getElementsByTagName("title");
if ($title->length) {
$this->getCanvas()->add_info("Title", trim($title->item(0)->nodeValue));
}
$metas = $this->dom->getElementsByTagName("meta");
$labels = array("author" => "Author", "keywords" => "Keywords", "description" => "Subject");
foreach ($metas as $meta) {
$name = mb_strtolower($meta->getAttribute("name"));
$value = trim($meta->getAttribute("content"));
if (isset($labels[$name])) {
$this->pdf->add_info($labels[$name], $value);
continue;
}
if ($name === "dompdf.view" && $this->parseDefaultView($value)) {
$this->getCanvas()->set_default_view($this->defaultView, $this->defaultViewOptions);
}
}
$root->set_containing_block(0, 0, $this->getCanvas()->get_width(), $this->getCanvas()->get_height());
$root->set_renderer(new Renderer($this));
// This is where the magic happens:
$root->reflow();
// Clean up cached images
Cache::clear();
global $_dompdf_warnings, $_dompdf_show_warnings;
if ($_dompdf_show_warnings && isset($_dompdf_warnings)) {
echo '<b>Dompdf Warnings</b><br><pre>';
foreach ($_dompdf_warnings as $msg) {
echo $msg . "\n";
}
echo $this->getCanvas()->get_cpdf()->messages;
echo '</pre>';
flush();
}
$this->restoreLocale();
}