mail-boxes-etc / lib / dompdf / src / FrameReflower / Inline.php

Inline.php in MBE eShip trunk, at lib/dompdf/src/FrameReflower/Inline.php

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1	<?php
2	/**
3	* @package dompdf
4	* @link https://github.com/dompdf/dompdf
5	* @license http://www.gnu.org/copyleft/lesser.html GNU Lesser General Public License
6	*/
7	namespace Dompdf\FrameReflower;
8
9	use Dompdf\FrameDecorator\Block as BlockFrameDecorator;
10	use Dompdf\FrameDecorator\Inline as InlineFrameDecorator;
11	use Dompdf\FrameDecorator\Text as TextFrameDecorator;
12
13	/**
14	* Reflows inline frames
15	*
16	* @package dompdf
17	*/
18	class Inline extends AbstractFrameReflower
19	{
20	/**
21	* Inline constructor.
22	* @param InlineFrameDecorator $frame
23	*/
24	function __construct(InlineFrameDecorator $frame)
25	{
26	parent::__construct($frame);
27	}
28
29	/**
30	* Handle reflow of empty inline frames.
31	*
32	* Regular inline frames are positioned together with their text (or inline)
33	* children after child reflow. Empty inline frames have no children that
34	* could determine the positioning, so they need to be handled separately.
35	*
36	* @param BlockFrameDecorator $block
37	*/
38	protected function reflow_empty(BlockFrameDecorator $block): void
39	{
40	/** @var InlineFrameDecorator */
41	$frame = $this->_frame;
42	$style = $frame->get_style();
43
44	// Resolve width, so the margin width can be checked
45	$style->set_used("width", 0.0);
46
47	$cb = $frame->get_containing_block();
48	$line = $block->get_current_line_box();
49	$width = $frame->get_margin_width();
50
51	if ($width > ($cb["w"] - $line->left - $line->w - $line->right)) {
52	$block->add_line();
53
54	// Find the appropriate inline ancestor to split
55	$child = $frame;
56	$p = $child->get_parent();
57	while ($p instanceof InlineFrameDecorator && !$child->get_prev_sibling()) {
58	$child = $p;
59	$p = $p->get_parent();
60	}
61
62	if ($p instanceof InlineFrameDecorator) {
63	// Split parent and stop current reflow. Reflow continues
64	// via child-reflow loop of split parent
65	$p->split($child);
66	return;
67	}
68	}
69
70	$frame->position();
71	$block->add_frame_to_line($frame);
72	}
73
74	/**
75	* @param BlockFrameDecorator\|null $block
76	*/
77	function reflow(BlockFrameDecorator $block = null)
78	{
79	/** @var InlineFrameDecorator */
80	$frame = $this->_frame;
81
82	// Check if a page break is forced
83	$page = $frame->get_root();
84	$page->check_forced_page_break($frame);
85
86	if ($page->is_full()) {
87	return;
88	}
89
90	// Counters and generated content
91	$this->_set_content();
92
93	$style = $frame->get_style();
94
95	// Resolve auto margins
96	// https://www.w3.org/TR/CSS21/visudet.html#inline-width
97	// https://www.w3.org/TR/CSS21/visudet.html#inline-non-replaced
98	if ($style->margin_left === "auto") {
99	$style->set_used("margin_left", 0.0);
100	}
101	if ($style->margin_right === "auto") {
102	$style->set_used("margin_right", 0.0);
103	}
104	if ($style->margin_top === "auto") {
105	$style->set_used("margin_top", 0.0);
106	}
107	if ($style->margin_bottom === "auto") {
108	$style->set_used("margin_bottom", 0.0);
109	}
110
111	// Handle line breaks
112	if ($frame->get_node()->nodeName === "br") {
113	if ($block) {
114	$line = $block->get_current_line_box();
115	$frame->set_containing_line($line);
116	$block->maximize_line_height($frame->get_margin_height(), $frame);
117	$block->add_line(true);
118
119	$next = $frame->get_next_sibling();
120	$p = $frame->get_parent();
121
122	if ($next && $p instanceof InlineFrameDecorator) {
123	$p->split($next);
124	}
125	}
126	return;
127	}
128
129	// Handle empty inline frames
130	if (!$frame->get_first_child()) {
131	if ($block) {
132	$this->reflow_empty($block);
133	}
134	return;
135	}
136
137	// Add our margin, padding & border to the first and last children
138	if (($f = $frame->get_first_child()) && $f instanceof TextFrameDecorator) {
139	$f_style = $f->get_style();
140	$f_style->margin_left = $style->margin_left;
141	$f_style->padding_left = $style->padding_left;
142	$f_style->border_left_width = $style->border_left_width;
143	$f_style->border_left_style = $style->border_left_style;
144	$f_style->border_left_color = $style->border_left_color;
145	}
146
147	if (($l = $frame->get_last_child()) && $l instanceof TextFrameDecorator) {
148	$l_style = $l->get_style();
149	$l_style->margin_right = $style->margin_right;
150	$l_style->padding_right = $style->padding_right;
151	$l_style->border_right_width = $style->border_right_width;
152	$l_style->border_right_style = $style->border_right_style;
153	$l_style->border_right_color = $style->border_right_color;
154	}
155
156	$cb = $frame->get_containing_block();
157
158	// Set the containing blocks and reflow each child. The containing
159	// block is not changed by line boxes.
160	foreach ($frame->get_children() as $child) {
161	$child->set_containing_block($cb);
162	$child->reflow($block);
163
164	// Stop reflow if the frame has been reset by a line or page break
165	// due to child reflow
166	if (!$frame->content_set) {
167	return;
168	}
169	}
170
171	if (!$frame->get_first_child()) {
172	return;
173	}
174
175	// Assume the position of the first child
176	[$x, $y] = $frame->get_first_child()->get_position();
177	$frame->set_position($x, $y);
178
179	// Handle relative positioning
180	foreach ($frame->get_children() as $child) {
181	$this->position_relative($child);
182	}
183
184	if ($block) {
185	$block->add_frame_to_line($frame);
186	}
187	}
188	}
189