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<?php /** * @package dompdf * @link http://dompdf.github.com/ * @author Benj Carson <benjcarson@digitaljunkies.ca> * @license http://www.gnu.org/copyleft/lesser.html GNU Lesser General Public License */ namespace Dompdf\FrameDecorator;
use Dompdf\Dompdf; use Dompdf\Frame; use Dompdf\LineBox;
/** * Decorates frames for block layout * * @access private * @package dompdf */ class Block extends AbstractFrameDecorator { /** * Current line index * * @var int */ protected $_cl;
/** * The block's line boxes * * @var LineBox[] */ protected $_line_boxes;
function __construct(Frame $frame, Dompdf $dompdf) { parent::__construct($frame, $dompdf);
$this->_line_boxes = array(new LineBox($this)); $this->_cl = 0; }
function reset() { parent::reset();
$this->_line_boxes = array(new LineBox($this)); $this->_cl = 0; }
/** * @return LineBox */ function get_current_line_box() { return $this->_line_boxes[$this->_cl]; }
/** * @return integer */ function get_current_line_number() { return $this->_cl; }
/** * @return LineBox[] */ function get_line_boxes() { return $this->_line_boxes; }
/** * @param integer $i */ function clear_line($i) { if (isset($this->_line_boxes[$i])) { unset($this->_line_boxes[$i]); } }
/** * @param Frame $frame */ function add_frame_to_line(Frame $frame) { if (!$frame->is_in_flow()) { return; }
$style = $frame->get_style();
$frame->set_containing_line($this->_line_boxes[$this->_cl]);
/* // Adds a new line after a block, only if certain conditions are met if ((($frame instanceof Inline && $frame->get_node()->nodeName !== "br") || $frame instanceof Text && trim($frame->get_text())) && ($frame->get_prev_sibling() && $frame->get_prev_sibling()->get_style()->display === "block" && $this->_line_boxes[$this->_cl]->w > 0 )) {
$this->maximize_line_height( $style->length_in_pt($style->line_height), $frame ); $this->add_line();
// Add each child of the inline frame to the line individually foreach ($frame->get_children() as $child) $this->add_frame_to_line( $child ); } else*/
// Handle inline frames (which are effectively wrappers) if ($frame instanceof Inline) {
// Handle line breaks if ($frame->get_node()->nodeName === "br") { $this->maximize_line_height($style->length_in_pt($style->line_height), $frame); $this->add_line(true); }
return; }
// Trim leading text if this is an empty line. Kinda a hack to put it here, // but what can you do... if ($this->get_current_line_box()->w == 0 && $frame->is_text_node() && !$frame->is_pre() ) {
$frame->set_text(ltrim($frame->get_text())); $frame->recalculate_width(); }
$w = $frame->get_margin_width();
if ($w == 0) { return; }
// Debugging code: /* Helpers::pre_r("\n<h3>Adding frame to line:</h3>");
// Helpers::pre_r("Me: " . $this->get_node()->nodeName . " (" . spl_object_hash($this->get_node()) . ")"); // Helpers::pre_r("Node: " . $frame->get_node()->nodeName . " (" . spl_object_hash($frame->get_node()) . ")"); if ( $frame->is_text_node() ) Helpers::pre_r('"'.$frame->get_node()->nodeValue.'"');
Helpers::pre_r("Line width: " . $this->_line_boxes[$this->_cl]->w); Helpers::pre_r("Frame: " . get_class($frame)); Helpers::pre_r("Frame width: " . $w); Helpers::pre_r("Frame height: " . $frame->get_margin_height()); Helpers::pre_r("Containing block width: " . $this->get_containing_block("w")); */ // End debugging
$line = $this->_line_boxes[$this->_cl]; if ($line->left + $line->w + $line->right + $w > $this->get_containing_block("w")) { $this->add_line(); }
$frame->position();
$current_line = $this->_line_boxes[$this->_cl]; $current_line->add_frame($frame);
if ($frame->is_text_node()) { $current_line->wc += count(preg_split("/\s+/", trim($frame->get_text()))); }
$this->increase_line_width($w);
$this->maximize_line_height($frame->get_margin_height(), $frame); }
function remove_frames_from_line(Frame $frame) { // Search backwards through the lines for $frame $i = $this->_cl; $j = null;
while ($i >= 0) { if (($j = in_array($frame, $this->_line_boxes[$i]->get_frames(), true)) !== false) { break; }
$i--; }
if ($j === false) { return; }
// Remove $frame and all frames that follow while ($j < count($this->_line_boxes[$i]->get_frames())) { $frames = $this->_line_boxes[$i]->get_frames(); $f = $frames[$j]; $frames[$j] = null; unset($frames[$j]); $j++; $this->_line_boxes[$i]->w -= $f->get_margin_width(); }
// Recalculate the height of the line $h = 0; foreach ($this->_line_boxes[$i]->get_frames() as $f) { $h = max($h, $f->get_margin_height()); }
$this->_line_boxes[$i]->h = $h;
// Remove all lines that follow while ($this->_cl > $i) { $this->_line_boxes[$this->_cl] = null; unset($this->_line_boxes[$this->_cl]); $this->_cl--; } }
function increase_line_width($w) { $this->_line_boxes[$this->_cl]->w += $w; }
function maximize_line_height($val, Frame $frame) { if ($val > $this->_line_boxes[$this->_cl]->h) { $this->_line_boxes[$this->_cl]->tallest_frame = $frame; $this->_line_boxes[$this->_cl]->h = $val; } }
function add_line($br = false) {
// if ( $this->_line_boxes[$this->_cl]["h"] == 0 ) //count($this->_line_boxes[$i]["frames"]) == 0 || // return;
$this->_line_boxes[$this->_cl]->br = $br; $y = $this->_line_boxes[$this->_cl]->y + $this->_line_boxes[$this->_cl]->h;
$new_line = new LineBox($this, $y);
$this->_line_boxes[++$this->_cl] = $new_line; }
//........................................................................ }
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