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<?php
/**
* DOMPDF - PHP5 HTML to PDF renderer
*
* File: $RCSfile: frame_decorator.cls.php,v $
* Created on: 2004-06-02
*
* Copyright (c) 2004 - Benj Carson <benjcarson@digitaljunkies.ca>
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public License
* along with this library in the file LICENSE.LGPL; if not, write to the
* Free Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
* 02111-1307 USA
*
* Alternatively, you may distribute this software under the terms of the
* PHP License, version 3.0 or later. A copy of this license should have
* been distributed with this file in the file LICENSE.PHP . If this is not
* the case, you can obtain a copy at http://www.php.net/license/3_0.txt.
*
* The latest version of DOMPDF might be available at:
* http://www.digitaljunkies.ca/dompdf
*
* @link http://www.digitaljunkies.ca/dompdf
* @copyright 2004 Benj Carson
* @author Benj Carson <benjcarson@digitaljunkies.ca>
* @package dompdf
* @version 0.5.1
*/
/* $Id: frame_decorator.cls.php,v 1.13 2006/07/07 21:31:03 benjcarson Exp $ */
/**
* Base Frame_Decorator class
*
* @access private
* @package dompdf
*/
abstract class Frame_Decorator extends Frame {
/**
* 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;
/**
* 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() )
$child->dispose(true);
}
unset($this->_root);
$this->_frame->dispose(false);
unset($this->_frame);
unset($this->_positioner);
unset($this->_reflower);
}
// Return a copy of this frame with $node as its node
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() {
$this->_frame->reset();
// Reset all children
foreach ($this->get_children() as $child)
$child->reset();
}
function get_node() { return $this->_frame->get_node(); }
function get_id() { return $this->_frame->get_id(); }
function get_style() { return $this->_frame->get_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); }
// function get_decorator() {
// if ( isset($this->_decorator) )
// return $this->_decorator;
// else
// return $this;
// }
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 $this->_frame->get_border_box(); }
function set_id($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);
}
//........................................................................
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;
}
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;
}
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;
}
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;
}
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 $s;
else
return null;
}
function get_children() {
return new FrameList($this);
}
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 );
}
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);
}
function get_root() { return $this->_root; }
//........................................................................
function find_block_parent() {
// Find our nearest block level parent
$p = $this->get_parent();
while ( $p ) {
if ( in_array($p->get_style()->display, Style::$BLOCK_TYPES) )
break;
$p = $p->get_parent();
}
return $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 $child
*/
function split($child = null) {
if ( is_null( $child ) ) {
$this->get_parent()->split($this);
return;
}
if ( $child->get_parent() !== $this )
throw new DOMPDF_Exception("Unable to split: frame is not a child of this one.");
$split = $this->copy( $this->_frame->get_node()->cloneNode() );
$split->reset();
$this->get_parent()->insert_child_after($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);
}
//........................................................................
final function position() { $this->_positioner->position(); }
final function reflow() {
// Uncomment this to see the frames before they're laid out, instead of
// during rendering.
//echo $this->_frame; flush();
$this->_reflower->reflow();
}
final function get_min_max_width() { return $this->get_reflower()->get_min_max_width(); }
//........................................................................
}
?>