/**
* Renders the HTML to PDF
*/
function render()
{
$this->save_locale();
if (DOMPDF_LOG_OUTPUT_FILE) {
if (!file_exists(DOMPDF_LOG_OUTPUT_FILE) && is_writable(dirname(DOMPDF_LOG_OUTPUT_FILE))) {
touch(DOMPDF_LOG_OUTPUT_FILE);
}
$this->_start_time = microtime(true);
ob_start();
}
//enable_mem_profile();
$this->_process_html();
$this->_css->apply_styles($this->_tree);
$root = null;
foreach ($this->_tree->get_frames() as $frame) {
// Set up the root frame
if (is_null($root)) {
$root = Frame_Factory::decorate_root($this->_tree->get_root(), $this);
continue;
}
// Create the appropriate decorators, reflowers & positioners.
$deco = Frame_Factory::decorate_frame($frame, $this);
$deco->set_root($root);
// FIXME: handle generated content
if ($frame->get_style()->display === "list-item") {
// Insert a list-bullet frame
$node = $this->_xml->createElement("bullet");
// arbitrary choice
$b_f = new Frame($node);
$parent_node = $frame->get_parent()->get_node();
if (!$parent_node->hasAttribute("dompdf-children-count")) {
$count = 0;
foreach ($parent_node->childNodes as $_node) {
if ($_node instanceof DOMElement) {
$count++;
}
}
$parent_node->setAttribute("dompdf-children-count", $count);
}
$index = 0;
if (!$parent_node->hasAttribute("dompdf-counter")) {
$index = 1;
$parent_node->setAttribute("dompdf-counter", 1);
} else {
$index = $parent_node->getAttribute("dompdf-counter");
$index++;
$parent_node->setAttribute("dompdf-counter", $index);
}
$node->setAttribute("dompdf-counter", $index);
$style = $this->_css->create_style();
$style->display = "-dompdf-list-bullet";
$style->inherit($frame->get_style());
$b_f->set_style($style);
$deco->prepend_child(Frame_Factory::decorate_frame($b_f, $this));
}
}
$page_styles = $this->_css->get_page_styles();
$base_page_style = $page_styles["base"];
unset($page_styles["base"]);
foreach ($page_styles as $_page_style) {
$_page_style->inherit($base_page_style);
}
if (is_array($base_page_style->size)) {
$this->set_paper(array(0, 0, $base_page_style->size[0], $base_page_style->size[1]));
}
$this->_pdf = Canvas_Factory::get_instance($this->_paper_size, $this->_paper_orientation);
// Add meta information
$title = $this->_xml->getElementsByTagName("title");
if ($title->length) {
$this->_pdf->add_info("Title", trim($title->item(0)->nodeValue));
}
$metas = $this->_xml->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" && $this->parse_default_view($value)) {
$this->_pdf->set_default_view($this->_default_view, $this->_default_view_options);
}
}
$root->set_containing_block(0, 0, $this->_pdf->get_width(), $this->_pdf->get_height());
$root->set_renderer(new Renderer($this));
// This is where the magic happens:
$root->reflow();
// Clean up cached images
Image_Cache::clear();
global $_dompdf_warnings, $_dompdf_show_warnings;
if ($_dompdf_show_warnings) {
echo '<b>DOMPDF Warnings</b><br><pre>';
foreach ($_dompdf_warnings as $msg) {
echo $msg . "\n";
}
echo $this->get_canvas()->get_cpdf()->messages;
echo '</pre>';
flush();
}
$this->restore_locale();
}
/**
* Renders the HTML to PDF
*/
function render()
{
$this->save_locale();
$log_output_file = $this->get_option("log_output_file");
if ($log_output_file) {
if (!file_exists($log_output_file) && is_writable(dirname($log_output_file))) {
touch($log_output_file);
}
$this->_start_time = microtime(true);
ob_start();
}
//enable_mem_profile();
$this->_process_html();
$this->_css->apply_styles($this->_tree);
// @page style rules : size, margins
$page_styles = $this->_css->get_page_styles();
$base_page_style = $page_styles["base"];
unset($page_styles["base"]);
foreach ($page_styles as $_page_style) {
$_page_style->inherit($base_page_style);
}
if (is_array($base_page_style->size)) {
$this->set_paper(array(0, 0, $base_page_style->size[0], $base_page_style->size[1]));
}
$this->_pdf = Canvas_Factory::get_instance($this, $this->_paper_size, $this->_paper_orientation);
Font_Metrics::init($this->_pdf);
if ($this->get_option("enable_font_subsetting") && $this->_pdf instanceof CPDF_Adapter) {
foreach ($this->_tree->get_frames() as $frame) {
$style = $frame->get_style();
$node = $frame->get_node();
// Handle text nodes
if ($node->nodeName === "#text") {
$this->_pdf->register_string_subset($style->font_family, $node->nodeValue);
continue;
}
// Handle generated content (list items)
if ($style->display === "list-item") {
$chars = List_Bullet_Renderer::get_counter_chars($style->list_style_type);
$this->_pdf->register_string_subset($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 = List_Bullet_Renderer::get_counter_chars('decimal');
$this->_pdf->register_string_subset($style->font_family, $chars);
$chars = List_Bullet_Renderer::get_counter_chars('upper-alpha');
$this->_pdf->register_string_subset($style->font_family, $chars);
$chars = List_Bullet_Renderer::get_counter_chars('lower-alpha');
$this->_pdf->register_string_subset($style->font_family, $chars);
$chars = List_Bullet_Renderer::get_counter_chars('lower-greek');
$this->_pdf->register_string_subset($style->font_family, $chars);
// the text of the stylesheet declaration
$this->_pdf->register_string_subset($style->font_family, $style->content);
continue;
}
}
}
$root = null;
foreach ($this->_tree->get_frames() as $frame) {
// Set up the root frame
if (is_null($root)) {
$root = Frame_Factory::decorate_root($this->_tree->get_root(), $this);
continue;
}
// Create the appropriate decorators, reflowers & positioners.
Frame_Factory::decorate_frame($frame, $this, $root);
}
// Add meta information
$title = $this->_xml->getElementsByTagName("title");
if ($title->length) {
$this->_pdf->add_info("Title", trim($title->item(0)->nodeValue));
}
$metas = $this->_xml->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" && $this->parse_default_view($value)) {
$this->_pdf->set_default_view($this->_default_view, $this->_default_view_options);
}
}
$root->set_containing_block(0, 0, $this->_pdf->get_width(), $this->_pdf->get_height());
$root->set_renderer(new Renderer($this));
// This is where the magic happens:
$root->reflow();
// Clean up cached images
Image_Cache::clear();
global $_dompdf_warnings, $_dompdf_show_warnings;
if ($_dompdf_show_warnings) {
echo '<b>DOMPDF Warnings</b><br><pre>';
foreach ($_dompdf_warnings as $msg) {
echo $msg . "\n";
}
echo $this->get_canvas()->get_cpdf()->messages;
echo '</pre>';
flush();
}
$this->restore_locale();
}
/**
* applies all current styles to a particular document tree
*
* apply_styles() applies all currently loaded styles to the provided
* {@link Frame_Tree}. Aside from parsing CSS, this is the main purpose
* of this class.
*
* @param Frame_Tree $tree
*/
function apply_styles(Frame_Tree $tree)
{
// Use XPath to select nodes. This would be easier if we could attach
// Frame objects directly to DOMNodes using the setUserData() method, but
// we can't do that just yet. Instead, we set a _node attribute_ in
// Frame->set_id() and use that as a handle on the Frame object via
// Frame_Tree::$_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(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(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 Frame_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;
}
}
// Styles 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 = $frame->get_id();
// Handle HTML 4.0 attributes
Attribute_Translator::translate_attributes($frame);
if (($str = $frame->get_node()->getAttribute(Attribute_Translator::$_style_attr)) !== "") {
// Lowest specificity
$styles[$id][1][] = $this->_parse_properties($str);
}
// 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);
if (DEBUGCSS) {
$debug_nodename = $frame->get_node()->nodeName;
print "<pre>\n[{$debug_nodename}\n";
foreach ($applied_styles as $spec => $arr) {
printf("specificity: 0x%08x\n", $spec);
foreach ($arr as $s) {
print "[\n";
$s->debug_print();
print "]\n";
}
}
}
// Merge the new styles with the inherited styles
foreach ($applied_styles as $arr) {
foreach ($arr as $s) {
$style->merge($s);
}
}
}
// Inherit parent's styles if required
if ($p) {
if (DEBUGCSS) {
print "inherit:\n";
print "[\n";
$p->get_style()->debug_print();
print "]\n";
}
$style->inherit($p->get_style());
}
if (DEBUGCSS) {
print "DomElementStyle:\n";
print "[\n";
$style->debug_print();
print "]\n";
print "/{$debug_nodename}]\n</pre>";
}
/*DEBUGCSS print: see below different print debugging method
pre_r($frame->get_node()->nodeName . ":");
echo "<pre>";
echo $style;
echo "</pre>";*/
$frame->set_style($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]);
}
}
/**
* Renders the HTML to PDF
*/
function render()
{
//enable_mem_profile();
$this->_process_html();
$this->_css->apply_styles($this->_tree);
$root = null;
foreach ($this->_tree->get_frames() as $frame) {
// Set up the root frame
if (is_null($root)) {
$root = Frame_Factory::decorate_root($this->_tree->get_root(), $this);
continue;
}
// Create the appropriate decorators, reflowers & positioners.
$deco = Frame_Factory::decorate_frame($frame, $this);
$deco->set_root($root);
// FIXME: handle generated content
if ($frame->get_style()->display === "list-item") {
// Insert a list-bullet frame
$node = $this->_xml->createElement("bullet");
// arbitrary choice
$b_f = new Frame($node);
$style = $this->_css->create_style();
$style->display = "-dompdf-list-bullet";
$style->inherit($frame->get_style());
$b_f->set_style($style);
$deco->prepend_child(Frame_Factory::decorate_frame($b_f, $this));
}
}
$this->_pdf = Canvas_Factory::get_instance($this->_paper_size, $this->_paper_orientation);
$root->set_containing_block(0, 0, $this->_pdf->get_width(), $this->_pdf->get_height());
$root->set_renderer(new Renderer($this));
// This is where the magic happens:
$root->reflow();
// Clean up cached images
Image_Cache::clear();
global $_dompdf_warnings, $_dompdf_show_warnings;
if ($_dompdf_show_warnings) {
echo '<b>DOMPDF Warnings</b><br><pre>';
foreach ($_dompdf_warnings as $msg) {
echo $msg . "\n";
}
echo $this->get_canvas()->get_cpdf()->messages;
echo '</pre>';
flush();
}
}
/**
* applies all current styles to a particular document tree
*
* apply_styles() applies all currently loaded styles to the provided
* {@link Frame_Tree}. Aside from parsing CSS, this is the main purpose
* of this class.
*
* @param Frame_Tree $tree
*/
function apply_styles(Frame_Tree $tree)
{
// Use XPath to select nodes. This would be easier if we could attach
// Frame objects directly to DOMNodes using the setUserData() method, but
// we can't do that just yet. Instead, we set a _node attribute_ in
// Frame->set_id() and use that as a handle on the Frame object via
// Frame_Tree::$_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());
// Apply all styles in stylesheet
foreach ($this->_styles as $selector => $style) {
$query = $this->_css_selector_to_xpath($selector);
// pre_var_dump($selector);
// pre_var_dump($query);
// echo ($style);
// Retrieve the nodes
$nodes = $xp->query($query);
foreach ($nodes as $node) {
//echo $node->nodeName . "\n";
// Retrieve the node id
if ($node->nodeType != 1) {
// 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 Frame_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 == 1) {
break;
}
}
// Styles can only be applied directly to DOMElements; anonymous
// frames inherit from their parent
if ($frame->get_node()->nodeType != 1) {
if ($p) {
$style->inherit($p->get_style());
}
$frame->set_style($style);
continue;
}
$id = $frame->get_id();
// Handle HTML 4.0 attributes
Attribute_Translator::translate_attributes($frame);
// Locate any additional style attributes
if (($str = $frame->get_node()->getAttribute("style")) !== "") {
$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());
}
// pre_r($frame->get_node()->nodeName . ":");
// echo "<pre>";
// echo $style;
// echo "</pre>";
$frame->set_style($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 $key) {
unset($this->_styles[$key]);
}
}
/**
* Renders the HTML to PDF
*/
function render()
{
$this->_process_html();
$this->_css->apply_styles($this->_tree);
$root = null;
foreach ($this->_tree->get_frames() as $frame) {
// Set up the root frame
if (is_null($root)) {
$root = Frame_Factory::decorate_root($this->_tree->get_root());
continue;
}
// Create the appropriate decorators, reflowers & positioners.
$deco = Frame_Factory::decorate_frame($frame, $this);
$deco->set_root($root);
// FIXME: handle generated content
if ($frame->get_style()->display == "list-item" && in_array($frame->get_style()->list_style_type, List_Bullet_Frame_Decorator::$BULLET_TYPES)) {
// Insert a list-bullet frame
$node = $this->_xml->createElement("bullet");
// arbitrary choice
$b_f = new Frame($node);
$style = $this->_css->create_style();
$style->display = "-dompdf-list-bullet";
$style->inherit($frame->get_style());
$b_f->set_style($style);
$deco->prepend_child(Frame_Factory::decorate_frame($b_f));
}
}
$this->_pdf = Canvas_Factory::get_instance($this->_paper_size, $this->_orientation);
$root->set_containing_block(0, 0, $this->_pdf->get_width(), $this->_pdf->get_height());
// This is where the magic happens:
$root->reflow();
$renderer = new Renderer($this->_pdf);
$renderer->render($root);
}
function apply_styles(Frame_Tree $tree)
{
$styles = array();
$xp = new DOMXPath($tree->get_dom());
foreach ($this->_styles as $selector => $style) {
if (strpos($selector, ":before") === false && strpos($selector, ":after") === false) {
continue;
}
$query = $this->_css_selector_to_xpath($selector, true);
$nodes = @$xp->query($query["query"]);
if ($nodes == null) {
record_warnings(E_USER_WARNING, "The CSS selector '{$selector}' is not valid", __FILE__, __LINE__);
continue;
}
foreach ($nodes as $i => $node) {
foreach ($query["pseudo_elements"] as $pos) {
if ($node->hasAttribute("dompdf_{$pos}_frame_id")) {
continue;
}
if (($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);
$new_frame_id = $tree->insert_node($node, $new_node, $pos);
$node->setAttribute("dompdf_{$pos}_frame_id", $new_frame_id);
}
}
}
foreach ($this->_styles as $selector => $style) {
$query = $this->_css_selector_to_xpath($selector);
$nodes = @$xp->query($query["query"]);
if ($nodes == null) {
record_warnings(E_USER_WARNING, "The CSS selector '{$selector}' is not valid", __FILE__, __LINE__);
continue;
}
foreach ($nodes as $node) {
if ($node->nodeType != XML_ELEMENT_NODE) {
continue;
}
$id = $node->getAttribute("frame_id");
$spec = $this->_specificity($selector);
$styles[$id][$spec][] = $style;
}
}
$root_flg = false;
foreach ($tree->get_frames() as $frame) {
if (!$root_flg && $this->_page_styles["base"]) {
$style = $this->_page_styles["base"];
$root_flg = true;
} else {
$style = $this->create_style();
}
$p = $frame;
while ($p = $p->get_parent()) {
if ($p->get_node()->nodeType == XML_ELEMENT_NODE) {
break;
}
}
if ($frame->get_node()->nodeType != XML_ELEMENT_NODE) {
if ($p) {
$style->inherit($p->get_style());
}
$frame->set_style($style);
continue;
}
$id = $frame->get_id();
Attribute_Translator::translate_attributes($frame);
if (($str = $frame->get_node()->getAttribute(Attribute_Translator::$_style_attr)) !== "") {
$styles[$id][1][] = $this->_parse_properties($str);
}
if (($str = $frame->get_node()->getAttribute("style")) !== "") {
$str = preg_replace("'/\\*.*?\\*/'si", "", $str);
$spec = $this->_specificity("!attr");
$styles[$id][$spec][] = $this->_parse_properties($str);
}
if (isset($styles[$id])) {
$applied_styles = $styles[$frame->get_id()];
ksort($applied_styles);
if (DEBUGCSS) {
$debug_nodename = $frame->get_node()->nodeName;
print "<pre>\n[{$debug_nodename}\n";
foreach ($applied_styles as $spec => $arr) {
printf("specificity: 0x%08x\n", $spec);
foreach ($arr as $s) {
print "[\n";
$s->debug_print();
print "]\n";
}
}
}
foreach ($applied_styles as $arr) {
foreach ($arr as $s) {
$style->merge($s);
}
}
}
if ($p) {
if (DEBUGCSS) {
print "inherit:\n";
print "[\n";
$p->get_style()->debug_print();
print "]\n";
}
$style->inherit($p->get_style());
}
if (DEBUGCSS) {
print "DomElementStyle:\n";
print "[\n";
$style->debug_print();
print "]\n";
print "/{$debug_nodename}]\n</pre>";
}
$frame->set_style($style);
}
foreach (array_keys($this->_styles) as $key) {
$this->_styles[$key] = null;
unset($this->_styles[$key]);
}
}