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<?php /** * @package dompdf * @link http://dompdf.github.com/ * @author Benj Carson <benjcarson@digitaljunkies.ca> * @author Helmut Tischer <htischer@weihenstephan.org> * @license http://www.gnu.org/copyleft/lesser.html GNU Lesser General Public License */
namespace Dompdf\Positioner;
use Dompdf\FrameDecorator\AbstractFrameDecorator;
/** * Positions list bullets * * @package dompdf */ class ListBullet extends AbstractPositioner {
function __construct(AbstractFrameDecorator $frame) { parent::__construct($frame); }
//........................................................................
function position() {
// Bullets & friends are positioned an absolute distance to the left of // the content edge of their parent element $cb = $this->_frame->get_containing_block();
// Note: this differs from most frames in that we must position // ourselves after determining our width $x = $cb["x"] - $this->_frame->get_width();
$p = $this->_frame->find_block_parent();
$y = $p->get_current_line_box()->y;
// This is a bit of a hack... $n = $this->_frame->get_next_sibling(); if ($n) { $style = $n->get_style(); $line_height = $style->length_in_pt($style->line_height, $style->get_font_size()); $offset = $style->length_in_pt($line_height, $n->get_containing_block("h")) - $this->_frame->get_height(); $y += $offset / 2; }
// Now the position is the left top of the block which should be marked with the bullet. // We tried to find out the y of the start of the first text character within the block. // But the top margin/padding does not fit, neither from this nor from the next sibling // The "bit of a hack" above does not work also.
// Instead let's position the bullet vertically centered to the block which should be marked. // But for get_next_sibling() the get_containing_block is all zero, and for find_block_parent() // the get_containing_block is paper width and the entire list as height.
// if ($p) { // //$cb = $n->get_containing_block(); // $cb = $p->get_containing_block(); // $y += $cb["h"]/2; // print 'cb:'.$cb["x"].':'.$cb["y"].':'.$cb["w"].':'.$cb["h"].':'; // }
// Todo: // For now give up on the above. Use Guesswork with font y-pos in the middle of the line spacing
/*$style = $p->get_style(); $font_size = $style->get_font_size(); $line_height = $style->length_in_pt($style->line_height, $font_size); $y += ($line_height - $font_size) / 2; */
//Position is x-end y-top of character position of the bullet. $this->_frame->set_position($x, $y);
} }
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