function apply_page_style(Frame $frame, $page_number)
{
$style = $frame->get_style();
$page_styles = $style->get_stylesheet()->get_page_styles();
// http://www.w3.org/TR/CSS21/page.html#page-selectors
if (count($page_styles) > 1) {
$odd = $page_number % 2 == 1;
$first = $page_number == 1;
$style = clone $page_styles["base"];
// FIXME RTL
if ($odd && isset($page_styles[":right"])) {
$style->merge($page_styles[":right"]);
}
if ($odd && isset($page_styles[":odd"])) {
$style->merge($page_styles[":odd"]);
}
// FIXME RTL
if (!$odd && isset($page_styles[":left"])) {
$style->merge($page_styles[":left"]);
}
if (!$odd && isset($page_styles[":even"])) {
$style->merge($page_styles[":even"]);
}
if ($first && isset($page_styles[":first"])) {
$style->merge($page_styles[":first"]);
}
$frame->set_style($style);
}
}
/**
* Decorate a Frame
*
* @param Frame $frame The frame to decorate
* @param Dompdf $dompdf The dompdf instance
* @param Frame $root The frame to decorate
*
* @throws Exception
* @return AbstractFrameDecorator
* FIXME: this is admittedly a little smelly...
*/
static function decorate_frame(Frame $frame, Dompdf $dompdf, Frame $root = null)
{
if (is_null($dompdf)) {
throw new Exception("The DOMPDF argument is required");
}
$style = $frame->get_style();
// Floating (and more generally out-of-flow) elements are blocks
// http://coding.smashingmagazine.com/2007/05/01/css-float-theory-things-you-should-know/
if (!$frame->is_in_flow() && in_array($style->display, Style::$INLINE_TYPES)) {
$style->display = "block";
}
$display = $style->display;
switch ($display) {
case "block":
$positioner = "Block";
$decorator = "Block";
$reflower = "Block";
break;
case "inline-block":
$positioner = "Inline";
$decorator = "Block";
$reflower = "Block";
break;
case "inline":
$positioner = "Inline";
if ($frame->is_text_node()) {
$decorator = "Text";
$reflower = "Text";
} else {
$enable_css_float = $dompdf->get_option("enable_css_float");
if ($enable_css_float && $style->float !== "none") {
$decorator = "Block";
$reflower = "Block";
} else {
$decorator = "Inline";
$reflower = "Inline";
}
}
break;
case "table":
$positioner = "Block";
$decorator = "Table";
$reflower = "Table";
break;
case "inline-table":
$positioner = "Inline";
$decorator = "Table";
$reflower = "Table";
break;
case "table-row-group":
case "table-header-group":
case "table-footer-group":
$positioner = "Null";
$decorator = "TableRowGroup";
$reflower = "TableRowGroup";
break;
case "table-row":
$positioner = "Null";
$decorator = "TableRow";
$reflower = "TableRow";
break;
case "table-cell":
$positioner = "TableCell";
$decorator = "TableCell";
$reflower = "TableCell";
break;
case "list-item":
$positioner = "Block";
$decorator = "Block";
$reflower = "Block";
break;
case "-dompdf-list-bullet":
if ($style->list_style_position === "inside") {
$positioner = "Inline";
} else {
$positioner = "ListBullet";
}
if ($style->list_style_image !== "none") {
$decorator = "ListBulletImage";
} else {
$decorator = "ListBullet";
}
$reflower = "ListBullet";
break;
case "-dompdf-image":
$positioner = "Inline";
$decorator = "Image";
$reflower = "Image";
break;
case "-dompdf-br":
$positioner = "Inline";
$decorator = "Inline";
$reflower = "Inline";
break;
default:
// FIXME: should throw some sort of warning or something?
// FIXME: should throw some sort of warning or something?
case "none":
if ($style->_dompdf_keep !== "yes") {
// Remove the node and the frame
$frame->get_parent()->remove_child($frame);
return;
}
$positioner = "Null";
$decorator = "Null";
$reflower = "Null";
break;
}
// Handle CSS position
$position = $style->position;
if ($position === "absolute") {
$positioner = "Absolute";
} else {
if ($position === "fixed") {
$positioner = "Fixed";
}
}
$node = $frame->get_node();
// Handle nodeName
if ($node->nodeName === "img") {
$style->display = "-dompdf-image";
$decorator = "Image";
$reflower = "Image";
}
$positioner = "Dompdf\\Positioner\\{$positioner}";
$decorator = "Dompdf\\FrameDecorator\\{$decorator}";
$reflower = "Dompdf\\FrameReflower\\{$reflower}";
/** @var AbstractFrameDecorator $deco */
$deco = new $decorator($frame, $dompdf);
$deco->set_positioner(new $positioner($deco));
$deco->set_reflower(new $reflower($deco, $dompdf->getFontMetrics()));
if ($root) {
$deco->set_root($root);
}
if ($display === "list-item") {
// Insert a list-bullet frame
$xml = $dompdf->get_dom();
$bullet_node = $xml->createElement("bullet");
// arbitrary choice
$b_f = new Frame($bullet_node);
$node = $frame->get_node();
$parent_node = $node->parentNode;
if ($parent_node) {
if (!$parent_node->hasAttribute("dompdf-children-count")) {
$xpath = new DOMXPath($xml);
$count = $xpath->query("li", $parent_node)->length;
$parent_node->setAttribute("dompdf-children-count", $count);
}
if (is_numeric($node->getAttribute("value"))) {
$index = intval($node->getAttribute("value"));
} else {
if (!$parent_node->hasAttribute("dompdf-counter")) {
$index = $parent_node->hasAttribute("start") ? $parent_node->getAttribute("start") : 1;
} else {
$index = $parent_node->getAttribute("dompdf-counter") + 1;
}
}
$parent_node->setAttribute("dompdf-counter", $index);
$bullet_node->setAttribute("dompdf-counter", $index);
}
$new_style = $dompdf->get_css()->create_style();
$new_style->display = "-dompdf-list-bullet";
$new_style->inherit($style);
$b_f->set_style($new_style);
$deco->prepend_child(Factory::decorate_frame($b_f, $dompdf, $root));
}
return $deco;
}
/**
* Restructure tree so that the table has the correct structure.
* Invalid children (i.e. all non-table-rows) are moved below the
* table.
*/
public function normalise()
{
// Store frames generated by invalid tags and move them outside the table
$erroneous_frames = array();
$anon_row = false;
$iter = $this->get_first_child();
while ($iter) {
$child = $iter;
$iter = $iter->get_next_sibling();
$display = $child->get_style()->display;
if ($anon_row) {
if ($display === "table-row") {
// Add the previous anonymous row
$this->insert_child_before($table_row, $child);
$table_row->normalise();
$child->normalise();
$anon_row = false;
continue;
}
// add the child to the anonymous row
$table_row->append_child($child);
continue;
} else {
if ($display === "table-row") {
$child->normalise();
continue;
}
if ($display === "table-cell") {
// Create an anonymous table row
$tr = $this->get_node()->ownerDocument->createElement("tr");
$frame = new Frame($tr);
$css = $this->get_style()->get_stylesheet();
$style = $css->create_style();
$style->inherit($this->get_style());
// Lookup styles for tr tags. If the user wants styles to work
// better, they should make the tr explicit... I'm not going to
// try to guess what they intended.
if ($tr_style = $css->lookup("tr")) {
$style->merge($tr_style);
}
// Okay, I have absolutely no idea why I need this clone here, but
// if it's omitted, php (as of 2004-07-28) segfaults.
$frame->set_style(clone $style);
$table_row = Factory::decorate_frame($frame, $this->_dompdf, $this->_root);
// Add the cell to the row
$table_row->append_child($child);
$anon_row = true;
continue;
}
if (!in_array($display, self::$VALID_CHILDREN)) {
$erroneous_frames[] = $child;
continue;
}
// Normalise other table parts (i.e. row groups)
foreach ($child->get_children() as $grandchild) {
if ($grandchild->get_style()->display === "table-row") {
$grandchild->normalise();
}
}
// Add headers and footers
if ($display === "table-header-group") {
$this->_headers[] = $child;
} elseif ($display === "table-footer-group") {
$this->_footers[] = $child;
}
}
}
if ($anon_row && $table_row instanceof DOMNode) {
// Add the row to the table
$this->_frame->append_child($table_row);
$table_row->normalise();
$this->_cellmap->add_row();
}
foreach ($erroneous_frames as $frame) {
$this->move_after($frame);
}
}
/**
* @param Style $style
*/
function set_style(Style $style)
{
$this->_frame->set_style($style);
}
/**
* Sets the generated content of a generated frame
*/
protected function _set_content()
{
$frame = $this->_frame;
$style = $frame->get_style();
// if the element was pushed to a new page use the saved counter value, otherwise use the CSS reset value
if ($style->counter_reset && ($reset = $style->counter_reset) !== "none") {
$vars = preg_split('/\\s+/', trim($reset), 2);
$frame->reset_counter($vars[0], isset($frame->_counters['__' . $vars[0]]) ? $frame->_counters['__' . $vars[0]] : (isset($vars[1]) ? $vars[1] : 0));
}
if ($style->counter_increment && ($increment = $style->counter_increment) !== "none") {
$frame->increment_counters($increment);
}
if ($style->content && !$frame->get_first_child() && $frame->get_node()->nodeName === "dompdf_generated") {
$content = $this->_parse_content();
// add generated content to the font subset
// FIXME: This is currently too late because the font subset has already been generated.
// See notes in issue #750.
if ($frame->get_dompdf()->get_option("enable_font_subsetting") && $frame->get_dompdf()->get_canvas() instanceof CPDF) {
$frame->get_dompdf()->get_canvas()->register_string_subset($style->font_family, $content);
}
$node = $frame->get_node()->ownerDocument->createTextNode($content);
$new_style = $style->get_stylesheet()->create_style();
$new_style->inherit($style);
$new_frame = new Frame($node);
$new_frame->set_style($new_style);
Factory::decorate_frame($new_frame, $frame->get_dompdf(), $frame->get_root());
$frame->append_child($new_frame);
}
}
