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Edit File : LineBox.php \| Size : 7.20 KB
<?php /** * @package dompdf * @link http://dompdf.github.com/ * @author Fabien Ménager <fabien.menager@gmail.com> * @license http://www.gnu.org/copyleft/lesser.html GNU Lesser General Public License / namespace Dompdf; use Dompdf\FrameDecorator\Block; use Dompdf\FrameDecorator\Page; /* * The line box class * * This class represents a line box * http://www.w3.org/TR/CSS2/visuren.html#line-box * * @package dompdf / class LineBox { /* * @var Block / protected $_block_frame; /* * @var Frame[] / protected $_frames = array(); /* * @var integer / public $wc = 0; /* * @var float / public $y = null; /* * @var float / public $w = 0.0; /* * @var float / public $h = 0.0; /* * @var float / public $left = 0.0; /* * @var float / public $right = 0.0; /* * @var Frame / public $tallest_frame = null; /* * @var bool[] / public $floating_blocks = array(); /* * @var bool / public $br = false; /* * Class constructor * * @param Block $frame the Block containing this line * @param int $y / public function __construct(Block $frame, $y = 0) { $this->_block_frame = $frame; $this->_frames = array(); $this->y = $y; $this->get_float_offsets(); } /* * Returns the floating elements inside the first floating parent * * @param Page $root * * @return Frame[] / public function get_floats_inside(Page $root) { $floating_frames = $root->get_floating_frames(); if (count($floating_frames) == 0) { return $floating_frames; } // Find nearest floating element $p = $this->_block_frame; while ($p->get_style()->float === "none") { $parent = $p->get_parent(); if (!$parent) { break; } $p = $parent; } if ($p == $root) { return $floating_frames; } $parent = $p; $childs = array(); foreach ($floating_frames as $_floating) { $p = $_floating->get_parent(); while (($p = $p->get_parent()) && $p !== $parent); if ($p) { $childs[] = $p; } } return $childs; } /* * / public function get_float_offsets() { static $anti_infinite_loop = 10000; // FIXME smelly hack $reflower = $this->_block_frame->get_reflower(); if (!$reflower) { return; } $cb_w = null; $block = $this->_block_frame; $root = $block->get_root(); if (!$root) { return; } $style = $this->_block_frame->get_style(); $floating_frames = $this->get_floats_inside($root); $inside_left_floating_width = 0; $inside_right_floating_width = 0; $outside_left_floating_width = 0; $outside_right_floating_width = 0; foreach ($floating_frames as $child_key => $floating_frame) { $floating_frame_parent = $floating_frame->get_parent(); $id = $floating_frame->get_id(); if (isset($this->floating_blocks[$id])) { continue; } $float = $floating_frame->get_style()->float; $floating_width = $floating_frame->get_margin_width(); if (!$cb_w) { $cb_w = $floating_frame->get_containing_block("w"); } $line_w = $this->get_width(); if (!$floating_frame->_float_next_line && ($cb_w <= $line_w + $floating_width) && ($cb_w > $line_w)) { $floating_frame->_float_next_line = true; continue; } // If the child is still shifted by the floating element if ($anti_infinite_loop-- > 0 && $floating_frame->get_position("y") + $floating_frame->get_margin_height() >= $this->y && $block->get_position("x") + $block->get_margin_width() >= $floating_frame->get_position("x") ) { if ($float === "left") { if ($floating_frame_parent === $this->_block_frame) { $inside_left_floating_width += $floating_width; } else { $outside_left_floating_width += $floating_width; } } elseif ($float === "right") { if ($floating_frame_parent === $this->_block_frame) { $inside_right_floating_width += $floating_width; } else { $outside_right_floating_width += $floating_width; } } $this->floating_blocks[$id] = true; } // else, the floating element won't shift anymore else { $root->remove_floating_frame($child_key); } } $this->left += $inside_left_floating_width; if ($outside_left_floating_width > 0 && $outside_left_floating_width > ((float)$style->length_in_pt($style->margin_left) + (float)$style->length_in_pt($style->padding_left))) { $this->left += $outside_left_floating_width - (float)$style->length_in_pt($style->margin_left) - (float)$style->length_in_pt($style->padding_left); } $this->right += $inside_right_floating_width; if ($outside_right_floating_width > 0 && $outside_right_floating_width > ((float)$style->length_in_pt($style->margin_left) + (float)$style->length_in_pt($style->padding_right))) { $this->right += $outside_right_floating_width - (float)$style->length_in_pt($style->margin_right) - (float)$style->length_in_pt($style->padding_right); } } /* * @return float / public function get_width() { return $this->left + $this->w + $this->right; } /* * @return Block / public function get_block_frame() { return $this->_block_frame; } /* * @return Frame[] / function &get_frames() { return $this->_frames; } /* * @param Frame $frame / public function add_frame(Frame $frame) { $this->_frames[] = $frame; } /* * Recalculate LineBox width based on the contained frames total width. * * @return float / public function recalculate_width() { $width = 0; foreach ($this->get_frames() as $frame) { $width += $frame->calculate_auto_width(); } return $this->w = $width; } /* * @return string / public function __toString() { $props = array("wc", "y", "w", "h", "left", "right", "br"); $s = ""; foreach ($props as $prop) { $s .= "$prop: " . $this->$prop . "\n"; } $s .= count($this->_frames) . " frames\n"; return $s; } /function __get($prop) { if (!isset($this->{"_$prop"})) return; return $this->{"_$prop"}; }/ } / class LineBoxList implements Iterator { private $_p = 0; private $_lines = array(); } */ Back

Edit File : LineBox.php | Size : 7.20 KB

<?php
/**
 * @package dompdf
 * @link    http://dompdf.github.com/
 * @author  Fabien Ménager <fabien.menager@gmail.com>
 * @license http://www.gnu.org/copyleft/lesser.html GNU Lesser General Public License
 */
namespace Dompdf;

use Dompdf\FrameDecorator\Block;
use Dompdf\FrameDecorator\Page;

/**
 * The line box class
 *
 * This class represents a line box
 * http://www.w3.org/TR/CSS2/visuren.html#line-box
 *
 * @package dompdf
 */
class LineBox
{

/**
     * @var Block
     */
    protected $_block_frame;

/**
     * @var Frame[]
     */
    protected $_frames = array();

/**
     * @var integer
     */
    public $wc = 0;

/**
     * @var float
     */
    public $y = null;

/**
     * @var float
     */
    public $w = 0.0;

/**
     * @var float
     */
    public $h = 0.0;

/**
     * @var float
     */
    public $left = 0.0;

/**
     * @var float
     */
    public $right = 0.0;

/**
     * @var Frame
     */
    public $tallest_frame = null;

/**
     * @var bool[]
     */
    public $floating_blocks = array();

/**
     * @var bool
     */
    public $br = false;

/**
     * Class constructor
     *
     * @param Block $frame the Block containing this line
     * @param int $y
     */
    public function __construct(Block $frame, $y = 0)
    {
        $this->_block_frame = $frame;
        $this->_frames = array();
        $this->y = $y;

$this->get_float_offsets();
    }

/**
     * Returns the floating elements inside the first floating parent
     *
     * @param Page $root
     *
     * @return Frame[]
     */
    public function get_floats_inside(Page $root)
    {
        $floating_frames = $root->get_floating_frames();

if (count($floating_frames) == 0) {
            return $floating_frames;
        }

// Find nearest floating element
        $p = $this->_block_frame;
        while ($p->get_style()->float === "none") {
            $parent = $p->get_parent();

if (!$parent) {
                break;
            }

$p = $parent;
        }

if ($p == $root) {
            return $floating_frames;
        }

$parent = $p;

$childs = array();

foreach ($floating_frames as $_floating) {
            $p = $_floating->get_parent();

while (($p = $p->get_parent()) && $p !== $parent);

if ($p) {
                $childs[] = $p;
            }
        }

return $childs;
    }

/**
     *
     */
    public function get_float_offsets()
    {
        static $anti_infinite_loop = 10000; // FIXME smelly hack

$reflower = $this->_block_frame->get_reflower();

if (!$reflower) {
            return;
        }

$cb_w = null;

$block = $this->_block_frame;
        $root = $block->get_root();

if (!$root) {
            return;
        }

$style = $this->_block_frame->get_style();
        $floating_frames = $this->get_floats_inside($root);
        $inside_left_floating_width = 0;
        $inside_right_floating_width = 0;
        $outside_left_floating_width = 0;
        $outside_right_floating_width = 0;

foreach ($floating_frames as $child_key => $floating_frame) {
            $floating_frame_parent = $floating_frame->get_parent();
            $id = $floating_frame->get_id();

if (isset($this->floating_blocks[$id])) {
                continue;
            }

$float = $floating_frame->get_style()->float;
            $floating_width = $floating_frame->get_margin_width();

if (!$cb_w) {
                $cb_w = $floating_frame->get_containing_block("w");
            }

$line_w = $this->get_width();

if (!$floating_frame->_float_next_line && ($cb_w <= $line_w + $floating_width) && ($cb_w > $line_w)) {
                $floating_frame->_float_next_line = true;
                continue;
            }

// If the child is still shifted by the floating element
            if ($anti_infinite_loop-- > 0 &&
                $floating_frame->get_position("y") + $floating_frame->get_margin_height() >= $this->y &&
                $block->get_position("x") + $block->get_margin_width() >= $floating_frame->get_position("x")
            ) {
                if ($float === "left") {
                    if ($floating_frame_parent === $this->_block_frame) {
                        $inside_left_floating_width += $floating_width;
                    } else {
                        $outside_left_floating_width += $floating_width;
                    }
                } elseif ($float === "right") {
                    if ($floating_frame_parent === $this->_block_frame) {
                        $inside_right_floating_width += $floating_width;
                    } else {
                        $outside_right_floating_width += $floating_width;
                    }
                }

$this->floating_blocks[$id] = true;
            } // else, the floating element won't shift anymore
            else {
                $root->remove_floating_frame($child_key);
            }
        }

$this->left += $inside_left_floating_width;
        if ($outside_left_floating_width > 0 && $outside_left_floating_width > ((float)$style->length_in_pt($style->margin_left) + (float)$style->length_in_pt($style->padding_left))) {
            $this->left += $outside_left_floating_width - (float)$style->length_in_pt($style->margin_left) - (float)$style->length_in_pt($style->padding_left);
        }
        $this->right += $inside_right_floating_width;
        if ($outside_right_floating_width > 0 && $outside_right_floating_width > ((float)$style->length_in_pt($style->margin_left) + (float)$style->length_in_pt($style->padding_right))) {
            $this->right += $outside_right_floating_width - (float)$style->length_in_pt($style->margin_right) - (float)$style->length_in_pt($style->padding_right);
        }
    }

/**
     * @return float
     */
    public function get_width()
    {
        return $this->left + $this->w + $this->right;
    }

/**
     * @return Block
     */
    public function get_block_frame()
    {
        return $this->_block_frame;
    }

/**
     * @return Frame[]
     */
    function &get_frames()
    {
        return $this->_frames;
    }

/**
     * @param Frame $frame
     */
    public function add_frame(Frame $frame)
    {
        $this->_frames[] = $frame;
    }

/**
     * Recalculate LineBox width based on the contained frames total width.
     *
     * @return float
     */
    public function recalculate_width()
    {
        $width = 0;

foreach ($this->get_frames() as $frame) {
            $width += $frame->calculate_auto_width();
        }

return $this->w = $width;
    }

/**
     * @return string
     */
    public function __toString()
    {
        $props = array("wc", "y", "w", "h", "left", "right", "br");
        $s = "";
        foreach ($props as $prop) {
            $s .= "$prop: " . $this->$prop . "\n";
        }
        $s .= count($this->_frames) . " frames\n";

return $s;
    }
    /*function __get($prop) {
      if (!isset($this->{"_$prop"})) return;
      return $this->{"_$prop"};
    }*/
}

/*
class LineBoxList implements Iterator {
  private $_p = 0;
  private $_lines = array();

}
*/

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