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<?php /** * @package dompdf * @link https://github.com/dompdf/dompdf * @license http://www.gnu.org/copyleft/lesser.html GNU Lesser General Public License */ namespace Dompdf\FrameReflower; use Dompdf\FrameDecorator\Block as BlockFrameDecorator; use Dompdf\FrameDecorator\Inline as InlineFrameDecorator; use Dompdf\FrameDecorator\Text as TextFrameDecorator; /** * Reflows inline frames * * @package dompdf */ class Inline extends AbstractFrameReflower { /** * Inline constructor. * @param InlineFrameDecorator $frame */ function __construct(InlineFrameDecorator $frame) { parent::__construct($frame); } /** * Handle reflow of empty inline frames. * * Regular inline frames are positioned together with their text (or inline) * children after child reflow. Empty inline frames have no children that * could determine the positioning, so they need to be handled separately. * * @param BlockFrameDecorator $block */ protected function reflow_empty(BlockFrameDecorator $block): void { /** @var InlineFrameDecorator */ $frame = $this->_frame; $style = $frame->get_style(); // Resolve width, so the margin width can be checked $style->set_used("width", 0.0); $cb = $frame->get_containing_block(); $line = $block->get_current_line_box(); $width = $frame->get_margin_width(); if ($width > ($cb["w"] - $line->left - $line->w - $line->right)) { $block->add_line(); // Find the appropriate inline ancestor to split $child = $frame; $p = $child->get_parent(); while ($p instanceof InlineFrameDecorator && !$child->get_prev_sibling()) { $child = $p; $p = $p->get_parent(); } if ($p instanceof InlineFrameDecorator) { // Split parent and stop current reflow. Reflow continues // via child-reflow loop of split parent $p->split($child); return; } } $frame->position(); $block->add_frame_to_line($frame); } /** * @param BlockFrameDecorator|null $block */ function reflow(BlockFrameDecorator $block = null) { /** @var InlineFrameDecorator */ $frame = $this->_frame; // Check if a page break is forced $page = $frame->get_root(); $page->check_forced_page_break($frame); if ($page->is_full()) { return; } // Counters and generated content $this->_set_content(); $style = $frame->get_style(); // Resolve auto margins // https://www.w3.org/TR/CSS21/visudet.html#inline-width // https://www.w3.org/TR/CSS21/visudet.html#inline-non-replaced if ($style->margin_left === "auto") { $style->set_used("margin_left", 0.0); } if ($style->margin_right === "auto") { $style->set_used("margin_right", 0.0); } if ($style->margin_top === "auto") { $style->set_used("margin_top", 0.0); } if ($style->margin_bottom === "auto") { $style->set_used("margin_bottom", 0.0); } // Handle line breaks if ($frame->get_node()->nodeName === "br") { if ($block) { $line = $block->get_current_line_box(); $frame->set_containing_line($line); $block->maximize_line_height($frame->get_margin_height(), $frame); $block->add_line(true); $next = $frame->get_next_sibling(); $p = $frame->get_parent(); if ($next && $p instanceof InlineFrameDecorator) { $p->split($next); } } return; } // Handle empty inline frames if (!$frame->get_first_child()) { if ($block) { $this->reflow_empty($block); } return; } // Add our margin, padding & border to the first and last children if (($f = $frame->get_first_child()) && $f instanceof TextFrameDecorator) { $f_style = $f->get_style(); $f_style->margin_left = $style->margin_left; $f_style->padding_left = $style->padding_left; $f_style->border_left_width = $style->border_left_width; $f_style->border_left_style = $style->border_left_style; $f_style->border_left_color = $style->border_left_color; } if (($l = $frame->get_last_child()) && $l instanceof TextFrameDecorator) { $l_style = $l->get_style(); $l_style->margin_right = $style->margin_right; $l_style->padding_right = $style->padding_right; $l_style->border_right_width = $style->border_right_width; $l_style->border_right_style = $style->border_right_style; $l_style->border_right_color = $style->border_right_color; } $cb = $frame->get_containing_block(); // Set the containing blocks and reflow each child. The containing // block is not changed by line boxes. foreach ($frame->get_children() as $child) { $child->set_containing_block($cb); $child->reflow($block); // Stop reflow if the frame has been reset by a line or page break // due to child reflow if (!$frame->content_set) { return; } } if (!$frame->get_first_child()) { return; } // Assume the position of the first child [$x, $y] = $frame->get_first_child()->get_position(); $frame->set_position($x, $y); // Handle relative positioning foreach ($frame->get_children() as $child) { $this->position_relative($child); } if ($block) { $block->add_frame_to_line($frame); } } }
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