new appraoch
This commit is contained in:
Tim Bendt
412
pancake/system/vendor/pancakeapp/dompdf/src/LineBox.php
vendored
Executable file
412
pancake/system/vendor/pancakeapp/dompdf/src/LineBox.php
vendored
Executable file
@@ -0,0 +1,412 @@
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<?php
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/**
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* @package dompdf
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* @link https://github.com/dompdf/dompdf
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* @license http://www.gnu.org/copyleft/lesser.html GNU Lesser General Public License
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*/
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namespace Dompdf;
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use Dompdf\FrameDecorator\AbstractFrameDecorator;
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use Dompdf\FrameDecorator\Block;
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use Dompdf\FrameDecorator\ListBullet;
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use Dompdf\FrameDecorator\Page;
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use Dompdf\FrameReflower\Text as TextFrameReflower;
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use Dompdf\Positioner\Inline as InlinePositioner;
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/**
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* The line box class
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*
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* This class represents a line box
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* http://www.w3.org/TR/CSS2/visuren.html#line-box
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*
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* @package dompdf
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*/
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class LineBox
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{
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/**
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* @var Block
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*/
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protected $_block_frame;
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/**
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* @var AbstractFrameDecorator[]
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*/
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protected $_frames = [];
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/**
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* @var ListBullet[]
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*/
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protected $list_markers = [];
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/**
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* @var int
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*/
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public $wc = 0;
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/**
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* @var float
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*/
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public $y = null;
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/**
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* @var float
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*/
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public $w = 0.0;
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/**
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* @var float
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*/
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public $h = 0.0;
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/**
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* @var float
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*/
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public $left = 0.0;
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/**
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* @var float
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*/
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public $right = 0.0;
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/**
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* @var AbstractFrameDecorator
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*/
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public $tallest_frame = null;
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/**
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* @var bool[]
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*/
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public $floating_blocks = [];
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/**
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* @var bool
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*/
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public $br = false;
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/**
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* Whether the line box contains any inline-positioned frames.
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*
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* @var bool
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*/
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public $inline = false;
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/**
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* Class constructor
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*
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* @param Block $frame the Block containing this line
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* @param int $y
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*/
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public function __construct(Block $frame, $y = 0)
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{
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$this->_block_frame = $frame;
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$this->_frames = [];
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$this->y = $y;
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$this->get_float_offsets();
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}
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/**
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* Returns the floating elements inside the first floating parent
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*
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* @param Page $root
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*
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* @return Frame[]
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*/
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public function get_floats_inside(Page $root)
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{
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$floating_frames = $root->get_floating_frames();
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if (count($floating_frames) == 0) {
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return $floating_frames;
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}
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// Find nearest floating element
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$p = $this->_block_frame;
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while ($p->get_style()->float === "none") {
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$parent = $p->get_parent();
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if (!$parent) {
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break;
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}
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$p = $parent;
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}
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if ($p == $root) {
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return $floating_frames;
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}
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$parent = $p;
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$childs = [];
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foreach ($floating_frames as $_floating) {
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$p = $_floating->get_parent();
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while (($p = $p->get_parent()) && $p !== $parent);
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if ($p) {
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$childs[] = $p;
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}
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}
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return $childs;
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}
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public function get_float_offsets()
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{
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static $anti_infinite_loop = 10000; // FIXME smelly hack
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$reflower = $this->_block_frame->get_reflower();
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if (!$reflower) {
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return;
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}
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$cb_w = null;
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$block = $this->_block_frame;
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$root = $block->get_root();
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if (!$root) {
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return;
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}
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$style = $this->_block_frame->get_style();
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$floating_frames = $this->get_floats_inside($root);
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$inside_left_floating_width = 0;
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$inside_right_floating_width = 0;
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$outside_left_floating_width = 0;
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$outside_right_floating_width = 0;
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foreach ($floating_frames as $child_key => $floating_frame) {
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$floating_frame_parent = $floating_frame->get_parent();
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$id = $floating_frame->get_id();
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if (isset($this->floating_blocks[$id])) {
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continue;
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}
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$float = $floating_frame->get_style()->float;
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$floating_width = $floating_frame->get_margin_width();
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if (!$cb_w) {
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$cb_w = $floating_frame->get_containing_block("w");
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}
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$line_w = $this->get_width();
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if (!$floating_frame->_float_next_line && ($cb_w <= $line_w + $floating_width) && ($cb_w > $line_w)) {
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$floating_frame->_float_next_line = true;
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continue;
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}
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// If the child is still shifted by the floating element
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if ($anti_infinite_loop-- > 0 &&
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$floating_frame->get_position("y") + $floating_frame->get_margin_height() >= $this->y &&
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$block->get_position("x") + $block->get_margin_width() >= $floating_frame->get_position("x")
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) {
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if ($float === "left") {
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if ($floating_frame_parent === $this->_block_frame) {
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$inside_left_floating_width += $floating_width;
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} else {
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$outside_left_floating_width += $floating_width;
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}
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} elseif ($float === "right") {
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if ($floating_frame_parent === $this->_block_frame) {
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$inside_right_floating_width += $floating_width;
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} else {
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$outside_right_floating_width += $floating_width;
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}
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}
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$this->floating_blocks[$id] = true;
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} // else, the floating element won't shift anymore
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else {
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$root->remove_floating_frame($child_key);
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}
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}
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$this->left += $inside_left_floating_width;
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if ($outside_left_floating_width > 0 && $outside_left_floating_width > ((float)$style->length_in_pt($style->margin_left) + (float)$style->length_in_pt($style->padding_left))) {
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$this->left += $outside_left_floating_width - (float)$style->length_in_pt($style->margin_left) - (float)$style->length_in_pt($style->padding_left);
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}
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$this->right += $inside_right_floating_width;
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if ($outside_right_floating_width > 0 && $outside_right_floating_width > ((float)$style->length_in_pt($style->margin_left) + (float)$style->length_in_pt($style->padding_right))) {
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$this->right += $outside_right_floating_width - (float)$style->length_in_pt($style->margin_right) - (float)$style->length_in_pt($style->padding_right);
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}
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}
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/**
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* @return float
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*/
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public function get_width()
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{
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return $this->left + $this->w + $this->right;
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}
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/**
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* @return Block
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*/
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public function get_block_frame()
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{
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return $this->_block_frame;
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}
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/**
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* @return AbstractFrameDecorator[]
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*/
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function &get_frames()
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{
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return $this->_frames;
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}
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/**
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* @param AbstractFrameDecorator $frame
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*/
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public function add_frame(Frame $frame): void
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{
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$this->_frames[] = $frame;
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if ($frame->get_positioner() instanceof InlinePositioner) {
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$this->inline = true;
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}
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}
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/**
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* Remove the frame at the given index and all following frames from the
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* line.
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*
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* @param int $index
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*/
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public function remove_frames(int $index): void
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{
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$lastIndex = count($this->_frames) - 1;
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if ($index < 0 || $index > $lastIndex) {
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return;
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}
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for ($i = $lastIndex; $i >= $index; $i--) {
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$f = $this->_frames[$i];
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unset($this->_frames[$i]);
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$this->w -= $f->get_margin_width();
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}
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// Reset array indices
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$this->_frames = array_values($this->_frames);
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// Recalculate the height of the line
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$h = 0.0;
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$this->inline = false;
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foreach ($this->_frames as $f) {
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$h = max($h, $f->get_margin_height());
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if ($f->get_positioner() instanceof InlinePositioner) {
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$this->inline = true;
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}
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}
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$this->h = $h;
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}
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/**
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* Get the `outside` positioned list markers to be vertically aligned with
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* the line box.
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*
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* @return ListBullet[]
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*/
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public function get_list_markers(): array
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{
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return $this->list_markers;
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}
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/**
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* Add a list marker to the line box.
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*
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* The list marker is only added for the purpose of vertical alignment, it
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* is not actually added to the list of frames of the line box.
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*/
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public function add_list_marker(ListBullet $marker): void
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{
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$this->list_markers[] = $marker;
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}
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/**
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* An iterator of all list markers and inline positioned frames of the line
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* box.
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*
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* @return \Iterator<AbstractFrameDecorator>
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*/
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public function frames_to_align(): \Iterator
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{
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yield from $this->list_markers;
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foreach ($this->_frames as $frame) {
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if ($frame->get_positioner() instanceof InlinePositioner) {
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yield $frame;
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}
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}
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}
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/**
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* Trim trailing whitespace from the line.
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*/
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public function trim_trailing_ws(): void
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{
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$lastIndex = count($this->_frames) - 1;
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if ($lastIndex < 0) {
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return;
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}
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$lastFrame = $this->_frames[$lastIndex];
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$reflower = $lastFrame->get_reflower();
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if ($reflower instanceof TextFrameReflower && !$lastFrame->is_pre()) {
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$reflower->trim_trailing_ws();
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$this->recalculate_width();
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}
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}
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/**
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* Recalculate LineBox width based on the contained frames total width.
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*
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* @return float
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*/
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public function recalculate_width(): float
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{
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$width = 0.0;
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foreach ($this->_frames as $frame) {
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$width += $frame->get_margin_width();
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}
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return $this->w = $width;
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}
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/**
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* @return string
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*/
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public function __toString(): string
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{
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$props = ["wc", "y", "w", "h", "left", "right", "br"];
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$s = "";
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foreach ($props as $prop) {
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$s .= "$prop: " . $this->$prop . "\n";
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}
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$s .= count($this->_frames) . " frames\n";
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return $s;
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}
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}
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/*
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class LineBoxList implements Iterator {
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private $_p = 0;
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private $_lines = array();
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}
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*/
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