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Direktori : /home2/selectio/public_html/tnpsctestbatch.com/pdf/src/FrameDecorator/ |
Current File : /home2/selectio/public_html/tnpsctestbatch.com/pdf/src/FrameDecorator/Block.php |
<?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; /** * Block constructor. * @param Frame $frame * @param Dompdf $dompdf */ function __construct(Frame $frame, Dompdf $dompdf) { parent::__construct($frame, $dompdf); $this->_line_boxes = [new LineBox($this)]; $this->_cl = 0; } /** * */ function reset() { parent::reset(); $this->_line_boxes = [new LineBox($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 $line_number * @return integer */ function set_current_line_number($line_number) { $line_boxes_count = count($this->_line_boxes); $cl = max(min($line_number, $line_boxes_count), 0); return ($this->_cl = $cl); } /** * @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->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 = $frame->get_margin_width(); // FIXME: Why? Doesn't quite seem to be the correct thing to do, // but does appear to be necessary. Hack to handle wrapped white space? if ($w == 0 && $frame->get_node()->nodeName !== "hr" && !$frame->is_pre()) { 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()) { // split the text into words (used to determine spacing between words on justified lines) // The regex splits on everything that's a separator (^\S double negative), excluding nbsp (\xa0) // This currently excludes the "narrow nbsp" character $words = preg_split('/[^\S\xA0]+/u', trim($frame->get_text())); $current_line->wc += count($words); } $this->increase_line_width($w); $this->maximize_line_height($frame->get_margin_height(), $frame); } /** * @param Frame $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--; } } /** * @param float $w */ function increase_line_width($w) { $this->_line_boxes[$this->_cl]->w += $w; } /** * @param $val * @param Frame $frame */ function maximize_line_height($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; } } /** * @param bool $br */ function add_line($br = false) { $this->_line_boxes[$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; } //........................................................................ }