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<?php
/**
* @package dompdf
* @link http://www.dompdf.com/
* @author Benj Carson <benjcarson@digitaljunkies.ca>
* @license http://www.gnu.org/copyleft/lesser.html GNU Lesser General Public License
* @version $Id: frame_decorator.cls.php 464 2012-01-30 20:44:53Z fabien.menager $
*/
/**
* Base Frame_Decorator class
*
* @access private
* @package dompdf
*/
abstract class Frame_Decorator extends Frame {
const DEFAULT_COUNTER = "-dompdf-default-counter";
public $_counters = array(); // array([id] => counter_value) (for generated content)
/**
* The root node of the DOM tree
*
* @var Frame
*/
protected $_root;
/**
* The decorated frame
*
* @var Frame
*/
protected $_frame;
/**
* Positioner object used to position this frame (Strategy pattern)
*
* @var Positioner
*/
protected $_positioner;
/**
* Reflower object used to calculate frame dimensions (Strategy pattern)
*
* @var Frame_Reflower
*/
protected $_reflower;
/**
* Reference to the current dompdf instance
*
* @var DOMPDF
*/
protected $_dompdf;
/**
* First block parent
*
* @var Block_Frame_Decorator
*/
private $_block_parent;
/**
* First positionned parent (position: relative | absolute | fixed)
*
* @var Frame_Decorator
*/
private $_positionned_parent;
/**
* Class constructor
*
* @param Frame $frame the decoration target
*/
function __construct(Frame $frame, DOMPDF $dompdf) {
$this->_frame = $frame;
$this->_root = null;
$this->_dompdf = $dompdf;
$frame->set_decorator($this);
}
/**
* "Destructor": foribly free all references held by this object
*
* @param bool $recursive if true, call dispose on all children
*/
function dispose($recursive = false) {
if ( $recursive ) {
while ( $child = $this->get_first_child() )
$child->dispose(true);
}
$this->_root = null;
unset($this->_root);
$this->_frame->dispose(true);
$this->_frame = null;
unset($this->_frame);
$this->_positioner = null;
unset($this->_positioner);
$this->_reflower = null;
unset($this->_reflower);
}
/**
* Return a copy of this frame with $node as its node
*
* @param DomNode $node
* @return Frame
*/
function copy(DomNode $node) {
$frame = new Frame($node);
$frame->set_style(clone $this->_frame->get_original_style());
$deco = Frame_Factory::decorate_frame($frame, $this->_dompdf);
$deco->set_root($this->_root);
return $deco;
}
/**
* Create a deep copy: copy this node and all children
*
* @return Frame
*/
function deep_copy() {
$frame = new Frame($this->get_node()->cloneNode());
$frame->set_style(clone $this->_frame->get_original_style());
$deco = Frame_Factory::decorate_frame($frame, $this->_dompdf);
$deco->set_root($this->_root);
foreach ($this->get_children() as $child)
$deco->append_child($child->deep_copy());
return $deco;
}
//........................................................................
/**
* Delegate calls to decorated frame object
*/
function reset() {
$this->_frame->reset();
$this->_counters = array();
// Reset all children
foreach ($this->get_children() as $child)
$child->reset();
}
// Getters -----------
function get_id() { return $this->_frame->get_id(); }
/**
* @return Frame
*/
function get_frame() { return $this->_frame; }
/**
* @return DomNode
*/
function get_node() { return $this->_frame->get_node(); }
/**
* @return Style
*/
function get_style() { return $this->_frame->get_style(); }
/**
* @return Style
*/
function get_original_style() { return $this->_frame->get_original_style(); }
function get_containing_block($i = null) { return $this->_frame->get_containing_block($i); }
function get_position($i = null) { return $this->_frame->get_position($i); }
/**
* @return DOMPDF
*/
function get_dompdf() { return $this->_dompdf; }
function get_margin_height() { return $this->_frame->get_margin_height(); }
function get_margin_width() { return $this->_frame->get_margin_width(); }
function get_padding_box() { return $this->_frame->get_padding_box(); }
function get_border_box() { return $this->_frame->get_border_box(); }
// Setters -----------
function set_id($id) { $this->_frame->set_id($id); }
function set_style(Style $style) { $this->_frame->set_style($style); }
function set_containing_block($x = null, $y = null, $w = null, $h = null) {
$this->_frame->set_containing_block($x, $y, $w, $h);
}
function set_position($x = null, $y = null) {
$this->_frame->set_position($x, $y);
}
function __toString() { return $this->_frame->__toString(); }
function prepend_child(Frame $child, $update_node = true) {
while ( $child instanceof Frame_Decorator )
$child = $child->_frame;
$this->_frame->prepend_child($child, $update_node);
}
function append_child(Frame $child, $update_node = true) {
while ( $child instanceof Frame_Decorator )
$child = $child->_frame;
$this->_frame->append_child($child, $update_node);
}
function insert_child_before(Frame $new_child, Frame $ref, $update_node = true) {
while ( $new_child instanceof Frame_Decorator )
$new_child = $new_child->_frame;
if ( $ref instanceof Frame_Decorator )
$ref = $ref->_frame;
$this->_frame->insert_child_before($new_child, $ref, $update_node);
}
function insert_child_after(Frame $new_child, Frame $ref, $update_node = true) {
while ( $new_child instanceof Frame_Decorator )
$new_child = $new_child->_frame;
while ( $ref instanceof Frame_Decorator )
$ref = $ref->_frame;
$this->_frame->insert_child_after($new_child, $ref, $update_node);
}
function remove_child(Frame $child, $update_node = true) {
while ( $child instanceof Frame_Decorator )
$child = $new_child->_frame;
$this->_frame->remove_child($child, $update_node);
}
//........................................................................
/**
* @return Frame_Decorator
*/
function get_parent() {
$p = $this->_frame->get_parent();
if ( $p && $deco = $p->get_decorator() ) {
while ( $tmp = $deco->get_decorator() )
$deco = $tmp;
return $deco;
} else if ( $p )
return $p;
else
return null;
}
/**
* @return Frame_Decorator
*/
function get_first_child() {
$c = $this->_frame->get_first_child();
if ( $c && $deco = $c->get_decorator() ) {
while ( $tmp = $deco->get_decorator() )
$deco = $tmp;
return $deco;
} else if ( $c )
return $c;
else
return null;
}
/**
* @return Frame_Decorator
*/
function get_last_child() {
$c = $this->_frame->get_last_child();
if ( $c && $deco = $c->get_decorator() ) {
while ( $tmp = $deco->get_decorator() )
$deco = $tmp;
return $deco;
} else if ( $c )
return $c;
else
return null;
}
/**
* @return Frame_Decorator
*/
function get_prev_sibling() {
$s = $this->_frame->get_prev_sibling();
if ( $s && $deco = $s->get_decorator() ) {
while ( $tmp = $deco->get_decorator() )
$deco = $tmp;
return $deco;
} else if ( $s )
return $s;
else
return null;
}
/**
* @return Frame_Decorator
*/
function get_next_sibling() {
$s = $this->_frame->get_next_sibling();
if ( $s && $deco = $s->get_decorator() ) {
while ( $tmp = $deco->get_decorator() )
$deco = $tmp;
return $deco;
} else if ( $s )
return $s;
else
return null;
}
/**
* @return FrameTreeList
*/
function get_subtree() {
return new FrameTreeList($this);
}
//........................................................................
function set_positioner(Positioner $posn) {
$this->_positioner = $posn;
if ( $this->_frame instanceof Frame_Decorator )
$this->_frame->set_positioner($posn);
}
//........................................................................
function set_reflower(Frame_Reflower $reflower) {
$this->_reflower = $reflower;
if ( $this->_frame instanceof Frame_Decorator )
$this->_frame->set_reflower( $reflower );
}
/**
* @return Frame_Reflower
*/
function get_reflower() { return $this->_reflower; }
//........................................................................
function set_root(Frame $root) {
$this->_root = $root;
if ( $this->_frame instanceof Frame_Decorator )
$this->_frame->set_root($root);
}
/**
* @return Page_Frame_Decorator
*/
function get_root() { return $this->_root; }
//........................................................................
/**
* @return Block_Frame_Decorator
*/
function find_block_parent() {
/*if ( $this->_block_parent && !isset($this->_block_parent->_splitted) ) {
return $this->_block_parent;
}*/
// Find our nearest block level parent
$p = $this->get_parent();
while ( $p ) {
if ( $p->is_block() ) break;
$p = $p->get_parent();
}
return $this->_block_parent = $p;
}
/**
* @return Frame_Decorator
*/
function find_positionned_parent() {
/*if ( $this->_positionned_parent && !isset($this->_block_parent->_splitted) ) {
return $this->_positionned_parent;
}*/
// Find our nearest relative positionned parent
$p = $this->get_parent();
while ( $p ) {
if ( $p->is_positionned() ) break;
$p = $p->get_parent();
}
if ( !$p ) {
$p = $this->_root->get_first_child(); // <body>
}
return $this->_positionned_parent = $p;
}
//........................................................................
/**
* split this frame at $child.
*
* The current frame is cloned and $child and all children following
* $child are added to the clone. The clone is then passed to the
* current frame's parent->split() method.
*
* @param Frame $child
* @param boolean $force_pagebreak
*/
function split($child = null, $force_pagebreak = false) {
if ( is_null( $child ) ) {
$this->get_parent()->split($this, $force_pagebreak);
return;
}
if ( $child->get_parent() !== $this )
throw new DOMPDF_Exception("Unable to split: frame is not a child of this one.");
$node = $this->_frame->get_node();
// mark the frame as splitted (don't use the find_***_parent cache)
//$this->_splitted = true;
$split = $this->copy( $node->cloneNode() );
$split->reset();
$split->get_original_style()->text_indent = 0;
// The body's properties must be kept
if ( $node->nodeName !== "body" ) {
// Style reset on the first and second parts
$style = $this->_frame->get_style();
$style->margin_bottom = 0;
$style->padding_bottom = 0;
$style->border_bottom = 0;
// second
$orig_style = $split->get_original_style();
$orig_style->text_indent = 0;
$orig_style->margin_top = 0;
$orig_style->padding_top = 0;
$orig_style->border_top = 0;
}
$this->get_parent()->insert_child_after($split, $this);
// Add $frame and all following siblings to the new split node
$iter = $child;
while ($iter) {
$frame = $iter;
$iter = $iter->get_next_sibling();
$frame->reset();
$split->append_child($frame);
}
$this->get_parent()->split($split, $force_pagebreak);
}
function reset_counter($id = self::DEFAULT_COUNTER, $value = 0) {
$this->get_parent()->_counters[$id] = $value;
}
function increment_counters($counters) {
foreach($counters as $id => $increment) {
$this->increment_counter($id, $increment);
}
}
function increment_counter($id = self::DEFAULT_COUNTER, $increment = 1) {
$counter_frame = $this->lookup_counter_frame($id);
if ( $counter_frame ) {
if ( !isset($counter_frame->_counters[$id]) ) {
$counter_frame->_counters[$id] = 0;
}
$counter_frame->_counters[$id] += $increment;
}
}
function lookup_counter_frame($id = self::DEFAULT_COUNTER) {
$f = $this->get_parent();
while( $f ) {
if( isset($f->_counters[$id]) ) {
return $f;
}
$fp = $f->get_parent();
if ( !$fp ) {
return $f;
}
$f = $fp;
}
}
// TODO: What version is the best : this one or the one in List_Bullet_Renderer ?
function counter_value($id = self::DEFAULT_COUNTER, $type = "decimal") {
$type = mb_strtolower($type);
if ( !isset($this->_counters[$id]) ) {
$value = $this->_counters[$id] = 0;
}
else {
$value = $this->_counters[$id];
}
switch ($type) {
default:
case "decimal":
return $value;
case "decimal-leading-zero":
return str_pad($value, 2, "0");
case "lower-roman":
return dec2roman($value);
case "upper-roman":
return mb_strtoupper(dec2roman($value));
case "lower-latin":
case "lower-alpha":
return chr( ($value % 26) + ord('a') - 1);
case "upper-latin":
case "upper-alpha":
return chr( ($value % 26) + ord('A') - 1);
case "lower-greek":
return unichr($value + 944);
case "upper-greek":
return unichr($value + 912);
}
}
//........................................................................
final function position() { $this->_positioner->position(); }
final function move($offset_x, $offset_y, $ignore_self = false) {
$this->_positioner->move($offset_x, $offset_y, $ignore_self);
}
final function reflow(Frame_Decorator $block = null) {
// Uncomment this to see the frames before they're laid out, instead of
// during rendering.
//echo $this->_frame; flush();
$this->_reflower->reflow($block);
}
final function get_min_max_width() { return $this->_reflower->get_min_max_width(); }
//........................................................................
}