1 | <?php |
---|
2 | /** |
---|
3 | * DOMPDF - PHP5 HTML to PDF renderer |
---|
4 | * |
---|
5 | * File: $RCSfile: list_bullet_positioner.cls.php,v $ |
---|
6 | * Created on: 2004-06-23 |
---|
7 | * |
---|
8 | * Copyright (c) 2004 - Benj Carson <benjcarson@digitaljunkies.ca> |
---|
9 | * |
---|
10 | * This library is free software; you can redistribute it and/or |
---|
11 | * modify it under the terms of the GNU Lesser General Public |
---|
12 | * License as published by the Free Software Foundation; either |
---|
13 | * version 2.1 of the License, or (at your option) any later version. |
---|
14 | * |
---|
15 | * This library is distributed in the hope that it will be useful, |
---|
16 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
---|
17 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
---|
18 | * Lesser General Public License for more details. |
---|
19 | * |
---|
20 | * You should have received a copy of the GNU Lesser General Public License |
---|
21 | * along with this library in the file LICENSE.LGPL; if not, write to the |
---|
22 | * Free Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA |
---|
23 | * 02111-1307 USA |
---|
24 | * |
---|
25 | * Alternatively, you may distribute this software under the terms of the |
---|
26 | * PHP License, version 3.0 or later. A copy of this license should have |
---|
27 | * been distributed with this file in the file LICENSE.PHP . If this is not |
---|
28 | * the case, you can obtain a copy at http://www.php.net/license/3_0.txt. |
---|
29 | * |
---|
30 | * The latest version of DOMPDF might be available at: |
---|
31 | * http://www.digitaljunkies.ca/dompdf |
---|
32 | * |
---|
33 | * @link http://www.digitaljunkies.ca/dompdf |
---|
34 | * @copyright 2004 Benj Carson |
---|
35 | * @author Benj Carson <benjcarson@digitaljunkies.ca> |
---|
36 | * @contributor Helmut Tischer <htischer@weihenstephan.org> |
---|
37 | * @package dompdf |
---|
38 | * @version 0.5.1 |
---|
39 | * |
---|
40 | * Changes |
---|
41 | * @contributor Helmut Tischer <htischer@weihenstephan.org> |
---|
42 | * @version 20090622 |
---|
43 | * - try to adjust top position of bullet to top corner of subsequent font |
---|
44 | */ |
---|
45 | |
---|
46 | /* $Id: list_bullet_positioner.cls.php 186 2009-10-19 22:42:06Z eclecticgeek@gmail.com $ */ |
---|
47 | |
---|
48 | /** |
---|
49 | * Positions list bullets |
---|
50 | * |
---|
51 | * @access private |
---|
52 | * @package dompdf |
---|
53 | */ |
---|
54 | class List_Bullet_Positioner extends Positioner { |
---|
55 | |
---|
56 | function __construct(Frame_Decorator $frame) { parent::__construct($frame); } |
---|
57 | |
---|
58 | //........................................................................ |
---|
59 | |
---|
60 | function position() { |
---|
61 | |
---|
62 | // Bullets & friends are positioned an absolute distance to the left of |
---|
63 | // the content edge of their parent element |
---|
64 | $cb = $this->_frame->get_containing_block(); |
---|
65 | $style = $this->_frame->get_style(); |
---|
66 | |
---|
67 | // Note: this differs from most frames in that we must position |
---|
68 | // ourselves after determining our width |
---|
69 | $x = $cb["x"] - $this->_frame->get_width(); |
---|
70 | |
---|
71 | $p = $this->_frame->find_block_parent(); |
---|
72 | |
---|
73 | $y = $p->get_current_line("y"); |
---|
74 | |
---|
75 | // This is a bit of a hack... |
---|
76 | $n = $this->_frame->get_next_sibling(); |
---|
77 | if ( $n ) { |
---|
78 | $style = $n->get_style(); |
---|
79 | $y += $style->length_in_pt( array($style->margin_top, $style->padding_top), |
---|
80 | $n->get_containing_block("w") ); |
---|
81 | } |
---|
82 | |
---|
83 | // Now the position is the left top of the block which should be marked with the bullet. |
---|
84 | // We tried to find out the y of the start of the first text character within the block. |
---|
85 | // But the top margin/padding does not fit, neither from this nor from the next sibling |
---|
86 | // The "bit of a hack" above does not work also. |
---|
87 | |
---|
88 | // Instead let's position the bullet vertically centered to the block which should be marked. |
---|
89 | // But for get_next_sibling() the get_containing_block is all zero, and for find_block_parent() |
---|
90 | // the get_containing_block is paper width and the entire list as height. |
---|
91 | |
---|
92 | // if ($p) { |
---|
93 | // //$cb = $n->get_containing_block(); |
---|
94 | // $cb = $p->get_containing_block(); |
---|
95 | // $y += $cb["h"]/2; |
---|
96 | // print 'cb:'.$cb["x"].':'.$cb["y"].':'.$cb["w"].':'.$cb["h"].':'; |
---|
97 | // } |
---|
98 | |
---|
99 | // Todo: |
---|
100 | // For now give up on the above. Use Guesswork with font y-pos in the middle of the line spacing |
---|
101 | |
---|
102 | $style = $p->get_style(); |
---|
103 | $font_size = $style->get_font_size(); |
---|
104 | $line_height = $style->length_in_pt($style->line_height, $font_size); |
---|
105 | $y += ($line_height - $font_size) / 2; |
---|
106 | |
---|
107 | //Position is x-end y-top of character position of the bullet. |
---|
108 | $this->_frame->set_position($x, $y); |
---|
109 | |
---|
110 | } |
---|
111 | } |
---|
112 | ?> |
---|