88 lines
2.7 KiB
PHP
88 lines
2.7 KiB
PHP
<?php
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/**
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* @package dompdf
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* @link http://dompdf.github.com/
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* @author Benj Carson <benjcarson@digitaljunkies.ca>
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* @author Fabien Ménager <fabien.menager@gmail.com>
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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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/**
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* Positions fixely positioned frames
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*/
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class Fixed_Positioner extends Positioner {
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function __construct(Frame_Decorator $frame) { parent::__construct($frame); }
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function position() {
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$frame = $this->_frame;
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$style = $frame->get_original_style();
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$root = $frame->get_root();
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$initialcb = $root->get_containing_block();
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$initialcb_style = $root->get_style();
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$p = $frame->find_block_parent();
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if ( $p ) {
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$p->add_line();
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}
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// Compute the margins of the @page style
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$margin_top = $initialcb_style->length_in_pt($initialcb_style->margin_top, $initialcb["h"]);
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$margin_right = $initialcb_style->length_in_pt($initialcb_style->margin_right, $initialcb["w"]);
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$margin_bottom = $initialcb_style->length_in_pt($initialcb_style->margin_bottom, $initialcb["h"]);
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$margin_left = $initialcb_style->length_in_pt($initialcb_style->margin_left, $initialcb["w"]);
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// The needed computed style of the element
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$height = $style->length_in_pt($style->height, $initialcb["h"]);
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$width = $style->length_in_pt($style->width, $initialcb["w"]);
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$top = $style->length_in_pt($style->top, $initialcb["h"]);
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$right = $style->length_in_pt($style->right, $initialcb["w"]);
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$bottom = $style->length_in_pt($style->bottom, $initialcb["h"]);
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$left = $style->length_in_pt($style->left, $initialcb["w"]);
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$y = $margin_top;
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if ( isset($top) ) {
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$y = $top + $margin_top;
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if ( $top === "auto" ) {
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$y = $margin_top;
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if ( isset($bottom) && $bottom !== "auto" ) {
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$y = $initialcb["h"] - $bottom - $margin_bottom;
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$margin_height = $this->_frame->get_margin_height();
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if ( $margin_height !== "auto" ) {
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$y -= $margin_height;
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}
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else {
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$y -= $height;
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}
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}
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}
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}
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$x = $margin_left;
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if ( isset($left) ) {
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$x = $left + $margin_left;
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if ( $left === "auto" ) {
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$x = $margin_left;
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if ( isset($right) && $right !== "auto" ) {
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$x = $initialcb["w"] - $right - $margin_right;
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$margin_width = $this->_frame->get_margin_width();
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if ( $margin_width !== "auto" ) {
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$x -= $margin_width;
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}
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else {
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$x -= $width;
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}
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}
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}
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}
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$frame->set_position($x, $y);
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$children = $frame->get_children();
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foreach($children as $child) {
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$child->set_position($x, $y);
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}
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}
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} |